Pampa Energy Inc.
A major independent energy company in Argentina, Pampa Energía generates electricity from thermal, hydroelectric, and wind plants, and explores for oil and natural gas. Its roots trace back to Frigorífico La Pampa, a refrigerated-warehouse company founded in 1945, whose corporate shell was bought in 2005 by an investment group and reshaped into an energy platform. Its name nods to the Quechua word "pampa," meaning the vast, flat grassy plains that stretch across central Argentina.
Sponsored Level 1 ADR representing common shares of Pampa Energia S.A.
20-F · Fiscal year ended Dec 31, 2025 · SEC filing ↗
The original filing sections are available below.
Our activities are exposed to market risk, including the exchange rate risk, the interest rate risk and the price risk. Financial risks are those derived from financial instruments we are exposed to during or at the closing of each fiscal year. Risk management systems and polici…
Our activities are exposed to market risk, including the exchange rate risk, the interest rate risk and the price risk. Financial risks are those derived from financial instruments we are exposed to during or at the closing of each fiscal year. Risk management systems and policies are reviewed on a regular basis to reflect changes in market conditions and our activities, with a focus not placed on the individual risks of the business units’ operations, but with a wider perspective focused on monitoring risks affecting the whole portfolio. Financial risk management is controlled by the Financial Department, which identifies, evaluates and covers financial risks. Our risk management strategy seeks to achieve a balance between profitability targets and risk exposure levels. For further information on our market risks, please see Note 6.2 to our Consolidated Financial Statements.
Read original filing text →EXCHANGE RATES Exchange Rates The following table sets forth the high, low, average and period-end exchange rates for the periods indicated, expressed in Pesos per U.S. Dollar and not adjusted for inflation. There can be no assurance that the Peso will not depreciate or apprecia…
EXCHANGE RATES Exchange Rates The following table sets forth the high, low, average and period-end exchange rates for the periods indicated, expressed in Pesos per U.S. Dollar and not adjusted for inflation. There can be no assurance that the Peso will not depreciate or appreciate again in the future. The Federal Reserve Bank of New York does not report a noon buying rate for Pesos. Exchange rates(1) (in Pesos per U.S. Dollars) High Low Average(2) Period end Year ended December 31, 2021 102.720 84.700 95.161 102.720 2022 177.160 103.000 130.810 177.160 2023 808.450 178.150 295.295 808.450 2024 1,032.000 810.700 916.164 1,032.000 2025 1,492.000 1,032.500 1,245.024 1,455.000 Month January 2026 1,475.000 1,429.500 1,448.952 1,447.000 February 2026 1,451.000 1,370.500 1,408.389 1,397.000 March 2026 1,416.000 1,368.000 1,395.950 1,382.000 April 2026(3) 1,394.000 1,387.500 1,391.750 1,387.500 Source: Banco Nación (1) Represents the average of exchange rates on the last day of each month during the period. (2) Average of the lowest and highest daily rates in the month. (3) Represents the average of the lowest and highest daily rates from April 1 through April 8, 2026. Pursuant to Argentine law, in the case that we pay dividends, we are required to determine the amount in Pesos. Exchange rate fluctuations will affect the U.S. Dollar amounts received by holders of American Depositary Shares, on conversion by us or by the depositary of cash dividends on the shares represented by such ADSs. Fluctuations in the exchange rate between the Peso and the U.S. Dollar will affect the U.S. Dollar equivalent of the Peso price of our shares on the BASE and, as a result, can also affect the market price of our ADSs. 6 Table of Contents RISK FACTORS The following summarizes some, but not all, of the risks provided below. Please carefully consider all of the information discussed in this Item 3.D. “Risk Factors” in this annual report for a more thorough description of these and other risks: Risks Related to Argentina · Our business, operational results and financial condition depend on economic and political conditions in Argentina, which remain vulnerable · The Argentine Government’s economic expectations may not materialize and the process of restoring confidence in the Argentine economy may take longer than anticipated · The policies or measures adopted by the Argentine Government from time to time may adversely affect the Argentine economy and the sectors in which we operate · Recent political developments in Argentina could affect macroeconomic, regulatory and social conditions in the country · Exchange rate volatility may adversely affect the Argentine economy · Inflation could adversely affect the Argentine economy and our operational results · The interruption of the publication of Argentine economic indexes or changes in their calculation methodologies could affect the projections made by the Company · Argentina’s ability to obtain financing from international markets could be limited, which may impair its ability to implement reforms and foster economic growth · Argentine corporations may be restricted from making payments in foreign currencies or from importing certain products · Argentine public expenditure may generate negative consequences for the Argentine economy · Failure to adequately address actual and perceived risks of institutional deterioration and corruption may adversely affect Argentina’s economy and financial condition · Our operating costs could increase as a result of the promotion or adoption of certain measures by the Argentine Government as well as pressure from union sectors · External shocks and “contagion” effects could have an adverse effect on the Argentine economy · The Argentine economy and finances may be adversely affected by declines in international commodity prices or in the production levels of commodities · Any downgrade in Argentina’s and/or Pampa’s credit rating or rating outlook could adversely affect both the rating and the market price of the Company’s ADSs and shares Risks Related to our Company · We operate a material portion of our business pursuant to public concessions granted by provincial and national governments, which may not be renewed, or may be revoked or terminated, and whose economic and other conditions may change · Our performance is largely dependent on recruiting and retaining key personnel · We employ a largely unionized labor force and could be subject to organized labor action, including work stoppages · We could be subject to accidents or other events that may not be covered by our insurance policies · We conduct a portion of our operations through joint ventures and co-controlled companies, and our failure to continue such joint ventures and co-controlled companies or to settle any potential material disagreements with our partners could have a material adverse effect on the success of these operations · Our derivative risk management activities could result in financial losses · We may not be able to effectively hedge our currency risk in full regarding a devaluation of the Argentine Peso · We are or could be involved in various legal proceedings which could result in unfavorable rulings against us · Cybersecurity events, including cyber-attacks, could adversely affect our business, financial condition, operational results and cash flows · Our operations could cause environmental risks and any change in environmental laws could increase our operating costs · We may be unable to collect payments of amounts due, or to collect them in a timely manner, from CAMMESA, ENARSA, the Argentine Government and other customers · Certain of our outstanding financial indebtedness includes bankruptcy, reorganization proceedings and expropriation events of default and we may be required to repay all of our outstanding debt upon the occurrence of any such events · Covenants in our indebtedness could adversely restrict our financial and operating flexibility · Natural disasters, pandemics, catastrophic events, terrorist attacks and operational failures could disrupt our assets and impair our ability to fulfill contractual commitments · Our activities may be adversely affected by events in other countries in which we do business · We continue evaluating investment projects to expand our activity, which could entail an increase in our indebtedness and additional costs · Climate change, energy transition and regulatory framework promoted for such purposes could affect our business, our results of operations and financial condition · Guarantees that we granted to third parties could be enforced Risks Related to Our Business Risks Related to our Oil and Gas Business · Oil and gas companies have been affected by certain measures taken by the Argentine Government and may be further affected by additional changes in their regulatory framework · Argentine oil and gas production concessions and exploration permits are subject to certain conditions and may not be renewed or could be revoked or their terms and economic conditions may be modified · Substantial or extended declines and volatility in the prices of crude oil, oil products and natural gas may have an adverse effect on our operational results and financial condition · Export duties and import regulations on our products negatively affected the profitability of our operations · Oil and gas prices and sale conditions could affect our level of capital expenditures · Limits on exports and imports of hydrocarbons and related oil products, including the imposition of export duties, other taxes and import regulations, have affected and may continue to affect our operational results · We conduct most of our oil and gas operations through joint arrangements (joint operations for accounting purposes) in which we may not always act as operators. Our inability to maintain or resolve disagreements with our partners within such joint agreements could materially affect the success of their operations · Our failure to comply with our investment commitments could negatively affect our operational results · Oil and gas activities are subject to significant economic, environmental and operational risks 7 Table of Contents · Our oil and gas activities are substantially dependent upon the availability of water and our ability to dispose of produced water gathered from drilling and production activities. Restrictions on our ability to obtain water or dispose of produced water may have a material adverse effect on our operations · Unless we replace our oil and gas reserves, such reserves and production will decline over time · Our estimated oil and gas reserves are based on assumptions that may prove inaccurate · We face significant competition in the acquisition of exploratory acreage and oil and natural gas reserves · We may incur significant costs and liabilities related to environmental, social, health and safety matters · Limitations on local pricing in Argentina may adversely affect our operational results · We are exposed to contractions in the crude oil and natural gas demand and to contractions in the demand for any of their by-products Risks Related to Our Generation Business · Government intervention in the electricity sector may have an impact on our business operations, financial condition and/or results of operations · We could be adversely affected by limited electricity transmission and distribution capacity or sudden increases or decreases in energy demand in the short or medium term · Our power generation plants may be subject to new regulations that require additional investments or adversely affect their dispatch · Measures encouraging renewable and nuclear energy generation projects may affect our generation sales · Our ability to generate electricity in our thermal generation plants depends on the availability and price of natural gas (and other fuels), and any disruption to our fuel supply or the regulatory framework governing its procurement could materially adversely affect our operational results · We may be subject to penalties under our energy supply agreements with CAMMESA and/or WEM Large Users · We may be subject to sanctions for breaches of applicable regulations or for failing to obtain the required permits and authorizations for our operating or new power generation units · Revenues from our renewable generation assets depend on meteorological and hydrological conditions, as well as on our ability to contract the energy produced and maintain applicable dispatch priorities · Operational difficulties could limit our ability to generate electricity, which could adversely affect our operational results · We may face extra costs due to the termination of the concession agreements for HINISA, HIDISA and/or HPPL · We could be exposed to third-party claims on real property where CPB is located that could result in the imposition of significant damages, for which we have not established a provision in our consolidated financial statements for potential losses · The national antitrust authorities could decide not to approve the acquisition of the CTEB · Our profits may be affected by the cancellation of the Energy Plus Program · Our energy projects may not perform as expected · We may face competition in the electricity sector and related industries · Risks arise for our business from technological changes in the energy market · Our suppliers may not be able to provide spare parts and/or upgrades to our generation units · Our PPAs may not be renewed, or they could be unilaterally modified, terminated or otherwise affected by measures adopted by the Argentine Government related to the PPAs or the energy sector in general, or we may not be able to enter into new PPAs · The generation activity involves the handling of dangerous elements such as fuels that have an associated potential risk for premises and people Risks Related to our Shares and ADSs · Restrictions on the movement of capital out of Argentina may impair the ability of holders of ADSs to receive dividends and distributions and the proceeds of any sale of the shares underlying the ADSs, which could affect the market value of the ADSs · ADS holders’ ability to receive cash dividends may be limited · Under Argentine law, shareholder rights may be fewer or less well-defined than in other jurisdictions · Holders of ADSs may be unable to exercise voting rights with respect to the common shares underlying the ADSs at our shareholders’ meetings · Our shareholders may be subject to liability for certain votes of their securities · Provisions of our bylaws and of Argentine securities laws could deter takeover attempts and have an adverse impact on the price of our shares and the ADSs · There can be no assurance that we will not be a passive foreign investment company, or PFIC, for U.S. federal income tax purposes for any taxable year, which could subject U.S. holders of our shares or ADSs to adverse U.S. federal income tax consequences 8 Table of Contents Risks Related to Argentina Overview We are a stock corporation (sociedad anónima) incorporated under the laws of the Republic of Argentina; most of our revenues are earned in Argentina and most of our operations, facilities and customers are located in Argentina. Our financial condition and operational results depend to a significant extent on macroeconomic, regulatory, political and financial conditions prevailing in Argentina, including, among others, growth rates, inflation rates, currency exchange rates, interest rates and taxes. Our business is subject to the effects of other local, regional and international events and conditions that may impact Argentina in any manner. For example, a slowdown in economic growth or economic recession could lead to a decreased demand for electricity in the service areas in which we operate or a decline in the purchasing power of our customers, which, in turn, could lead to a higher delinquency rate from our customers or increased energy losses due to illegal use of our services. Actions of the Argentine Government concerning the economy, including measures with respect to inflation, interest rates, price controls (including tariffs and other compensation of utility companies), foreign exchange controls and taxes, have had and may in the future have a material adverse effect on private sector entities, including us. Our activities are highly regulated and subject to uncertainties due to political and economic factors, changes in legislation, expropriations, termination and modification of contractual rights, revocation of permits and consents, the need to obtain permits from regulatory authorities, foreign currency restrictions, price controls, currency fluctuations and increases in royalties, among others. We cannot assure you that the Argentine Government will not adopt policies that could adversely affect the Argentine economy or our business, financial condition or operational results. In addition, we cannot assure you that future economic, regulatory, social and political developments in Argentina will not impair our business, financial condition or operational results, or cause the market value of our ADSs and common shares to decline. Our business, operational results and financial condition depend on economic and political conditions in Argentina, which remain vulnerable Most of our operations, facilities and customers are located in Argentina, and most of our revenues are earned in Argentina. Hence, our financial condition and operational results depend to a significant extent on macroeconomic, regulatory, political and financial conditions prevailing in Argentina. The Argentine economy has experienced significant volatility in recent decades, characterized by periods of low or negative growth, high levels of inflation and currency devaluation. Sustainable economic growth in Argentina depends on a variety of factors including the international demand for Argentine exports, the stability and competitiveness of the Peso against foreign currencies, confidence among consumers and foreign and domestic investors, a stable rate of inflation, national employment levels and the circumstances of Argentina’s regional trade partners. Following periods of economic volatility, Argentina’s GDP grew 4.6% in 2025, after showing signs of stabilization. The IMF expects Argentina’s economy to grow by 4.0% in 2026, supported by domestic demand, improved access to credit, declining inflation, and continued deregulation. However, we cannot guarantee that this estimate will be met. The current Argentine administration faces significant macroeconomic challenges, such as continuing to reduce the inflation rate or maintaining it at low levels, sustaining a fiscal surplus, accumulating reserves, supporting the Peso, further eliminating exchange controls, refinancing debt owed to private creditors, and improving the competitiveness of the economy. Since taking office, the current administration has implemented a large number of measures aimed at deregulating the Argentine economy and limiting government intervention in the private sector, including trade liberalization through reduced tariff barriers, labor market modernization, easing of foreign exchange restrictions, and product market deregulation across key sectors such as oil, gas, mining, and electricity. However, there can be no assurance that these measures will be sustained or will achieve their intended objectives. As has occurred with previous reform efforts, these measures may be modified, delayed, reversed, or challenged, including through legislative action or judicial proceedings, which could adversely affect economic stability and growth. The Argentine macroeconomic environment remains vulnerable, despite recent stabilization efforts. Although inflation has decelerated during 2025, declining from an accumulated rate of 117.8% during 2024 to an accumulated rate of 31.5% during 2025, elevated inflation levels continue to undermine confidence in the Argentine economy. Trade imbalances present further risks, as import volumes rose 30.5% year-over-year to approximately U.S.$ 75.8 billion in 2025, which may strain foreign exchange reserves and the Argentine trade balance. 9 Table of Contents Social and labor market conditions present additional challenges. During the second semester of 2025, poverty and extreme poverty reached 28.2% and 6.3%, respectively; unemployment reached 7.5%; and the informal employment rate reached 43.0%. Protests, such as those observed in recent years, or strikes, such as the general strike of February 19, 2026, may negatively affect the stability of the political, social and economic environment and could negatively impact global financial market confidence in the Argentine economy. The Argentine Government’s economic expectations may not materialize and the process of restoring confidence in the Argentine economy may take longer than anticipated Argentina’s economy may be adversely affected if political and social pressures prevent the Argentine Government from implementing policies designed to control inflation, generate growth and enhance consumer and investor confidence, or if such policies once implemented fail to achieve their intended objectives. These events could materially affect our financial condition and operational results or cause the market value of our ADSs and our common shares to decline. Also, the Argentine economy could be affected by a regional or global crisis. See “External shocks and “contagion” effects could have an adverse effect on the Argentine economy”. We cannot assure you that a decline in economic growth will not adversely affect our business, financial condition or operational results and cause the market value of our ADSs and our common shares to decline. The policies or measures adopted by the Argentine Government from time to time may adversely affect the Argentine economy and the sectors in which we operate The Argentine Government has historically exercised significant influence over the economy, and we operate in a highly regulated environment. In the recent past, the Argentine Government has directly intervened in the economy, including through the implementation of expropriation and nationalization measures, price controls and exchange controls. Since we operate in a context in which the governing law and applicable regulations change frequently, in part as the result of changes in government administrations, it is difficult to predict if and how our activities will be affected by such changes. Javier Milei was elected President of Argentina and took office in 2023. Once in office, President Milei announced various “shock” measures and policies designed to reform the Argentine Government and economy. Such measures included DNU No. 70/23, which initiated a comprehensive series of amendments in economic, labor, foreign trade, energy and legal policy areas, often with the goal of repealing relevant regulations. Additionally, significant adjustments were implemented in the Argentine Civil and Commercial Code, mainly focused on foreign currency obligations, as well as easing of regulation of contracts and restrictions to judicial authority in contractual intervention. Although the Argentine Senate voted to reject DNU No. 70/23 on March 14, 2024, and transmitted the measure to the Chamber of Deputies, the decree remains in effect, as the lower chamber had not, as of the date of this report, acted to reject it. The decree is also the subject of ongoing judicial challenges, including court orders suspending certain labor-related provisions. We cannot predict the ultimate outcome of these proceedings or the extent to which they may affect the decree’s scope, implementation, or continued effectiveness. Concurrently with DNU No. 70/23, President Javier Milei submitted an “Omnibus Law” bill to Congress aimed at deregulating the economy, modernizing the state, easing labor laws, and privatizing state-owned companies. A revised version of the bill with a more limited scope was approved on June 27, 2024, enacting Law No. 27,742, known as the “Bases Law” (Ley Bases), which was implemented through extensive regulatory action during 2025. Its labor modernization provisions have been in effect since July 9, 2024. The Bases Law also established the Large Investment Incentive Regime (Régimen de Incentivo para Grandes Inversiones, or “RIGI”), which provides significant tax, customs, and regulatory incentives for qualifying investments and aims to develop investments in strategic sectors such as oil and gas, mining, renewable energies, and other strategic sectors. On February 19, 2026, the deadline to join the RIGI was extended until July 8, 2027, and new projects related to the production of liquid and gaseous hydrocarbons in greenfield blocks were incorporated into the regime. There can be no assurance that these reforms and incentives will remain in force, be fully implemented as intended, or have a positive effect on our business, financial condition, or operational results. The current administration has also enacted Law No. 27,802, published in the Official Gazette on March 6, 2026, which substantially amends employment rules in the country, including a new mandatory employer contribution to a Labor Assistance Fund with a corresponding reduction in employers’ social security contributions, measures to simplify the rules and formalities for the registration of employment relationships, amendments to vacation policies, the possibility to agree, under certain circumstances and subject to specific conditions, to a compensatory system for overtime work, the unification of criteria regarding the calculation of certain severance payments and the updating of amounts claimed in labor judicial proceedings, and the regulation of additional aspects related to collective bargaining agreements and the right to strike. On March 30, 2026, a court ruling was issued in the context of a legal action filed against such reform, pursuant to which a preliminary injunction was granted suspending the application of certain provisions thereof. As a result, the effectiveness and/or implementation of certain aspects of the labor reform may be limited pending a final decision. As of the date of this annual report, the ultimate scope and impact of such ruling remain uncertain. We cannot assure you that Law No. 27,802 will remain in force in its current form or will not be subject to further judicial challenge, modification, or repeal. 10 Table of Contents Additionally, President Javier Milei has implemented substantial reforms affecting the energy sector, including deregulation measures, liberalization of energy prices, and elimination of certain export controls and currency restrictions. While these policies are generally intended to attract foreign investment and stimulate development of unconventional resources such as the Vaca Muerta shale formation, the rapid pace of regulatory change creates uncertainty regarding the long-term stability of our operating environment. The full implementation and durability of these reforms remain subject to political and economic factors that could impact our operations. On April 8, 2026, an amendment to Law No. 26,639, which governs the Regime of Minimum Budgets for the Preservation of Glaciers and the Periglacial Environment, was approved by Congress. Such amendment narrows the scope of protected zones to permit productive activities and modify the regulatory framework applicable to hydrocarbon production in certain previously restricted periglacial areas. We cannot assure you that the reforms spearheaded by President Milei will be sustained in the long term. Argentine courts have suspended certain articles of DNU No. 70/23, particularly those related to labor matters, including subcontractor liability and the calculation of salaries, severance payments, and social security contributions. More broadly, companies operating in Argentina face risks including strikes, social unrest, mandatory amendment of existing contracts, and changes in taxation policies, including tax increases and retroactive tax claims. We cannot guarantee that the Argentine Government’s economic, regulatory, social, and political framework, or the policies or measures it adopts or may adopt, will not adversely affect the market value of our ADSs, our business, our financial condition, or our results of operations. Recent political developments in Argentina could affect macroeconomic, regulatory and social conditions in the country On October 26, 2025, Argentina held national midterm legislative elections to renew 127 of the 257 seats in the Chamber of Deputies and 24 of the 72 seats in the Senate. President Javier Milei’s party, La Libertad Avanza, obtained approximately 40.7% of the national vote for the Chamber of Deputies and approximately 42.0% for the Senate, while the principal opposition coalition, Fuerza Patria, obtained approximately 31.7% and 28.4%, respectively. Following the elections, President Milei implemented a cabinet reshuffle affecting the Foreign Affairs, Interior, Security, and Defense ministries. In the immediate aftermath of the elections, Argentine financial markets reacted positively, with the Peso appreciating against the U.S. Dollar, Argentine sovereign bonds rising, and equity indices recording significant gains, reflecting improved investor confidence in the continuity of the administration’s economic reform agenda. However, there can be no assurance that these conditions will be sustained. Political or social opposition to the Argentine Government’s reform measures, adverse external developments or delays in the implementation of structural policies could reverse these trends and generate volatility in Argentine financial markets, adversely affecting access to international financing, the value of the Argentine Peso and the overall stability of the Argentine economy. Argentina is scheduled to hold presidential and legislative elections in 2027, which could result in a change in administration and further shifts in the direction of economic and regulatory policy. We cannot assure you whether such changes will occur or, if they occur, estimate their timing or potential effects on our operations and financial condition. Exchange rate volatility may adversely affect the Argentine economy The Argentine Peso has been subject to significant devaluation against the U.S. Dollar in the past and may be subject to fluctuations in the future. According to the exchange rate information published by the Banco de la Nación Argentina, the Argentine Peso has depreciated 28.9%, 27.7% and 356.3% in 2025, 2024 and 2023, respectively. The Peso experienced sharp volatility during 2025, first in April when certain foreign exchange controls were lifted and the exchange rate regime was converted to a managed float system. Later, the Peso came under renewed pressure in the run-up to the 2025 midterm legislative elections. 11 Table of Contents We cannot predict whether and to what extent the value of the Peso could depreciate or appreciate against the U.S. Dollar and the way in which any such fluctuations could affect our business. The value of the Peso compared to other currencies is dependent, in addition to other factors, on the level of international reserves maintained by the BCRA, which have also shown significant fluctuations in recent years. As of April 8, 2026, the international reserves of the BCRA totaled U.S.$ 44,750 million, reflecting recent purchases made by the BCRA in the exchange market in order to increase such reserves. Fluctuations in the value of the Peso may also adversely affect the Argentine economy, the prices of our products, our financial condition and operational results. The devaluation of the Argentine Peso may have a negative impact on the ability of certain Argentine businesses to service their foreign currency-denominated debt, lead to high inflation, significantly reduce real wages, jeopardize the stability of businesses whose success depends on domestic market demand, including public utilities and the financial industry, and adversely affect the Argentine Government’s ability to honor its foreign debt obligations. On the other hand, a significant appreciation of the Argentine Peso against the U.S. Dollar could also present risks for the Argentine economy, including a reduction in exports as a consequence of diminished external competitiveness, a trend that is currently affecting both export volumes and values. Any such increase could also have a negative effect on economic growth and employment, reduce the Argentine public sector’s revenues from tax collection in real terms and have a material adverse effect on our business, our operational results and our ability to repay our debt within the respective maturity dates and may affect the market value of our ADSs, as a result of the overall effects of the weakening of the Argentine economy. Inflation could adversely affect the Argentine economy and our operational results Historically, inflation has materially undermined the Argentine economy and the Argentine Government’s ability to create conditions that allow growth. In recent years, Argentina has confronted inflationary pressures, evidenced by significantly higher fuel, energy and food prices, among other factors. When the current administration took office, it applied certain measures (see “The policies or measures adopted by the Argentine Government from time to time may adversely affect the Argentine economy and the sectors in which we operate”) relating to the deregulation of prices for food supplies, health insurances, communications, transport, gasoline and electricity and gas tariffs, which generated additional inflationary pressure at first. However, according to data published by the INDEC, during 2024 and 2025 there was a significant deceleration of year-on-year inflation with respect to previous years. The National CPI variation was 31.5% during 2025, 117.8% during 2024, and 211.4% during 2023, continuing a multi-year deceleration trend. Notwithstanding this deceleration, inflation remains elevated. During 2026, CPI rates for January and February were 2.9% and 2.9%, respectively. For 2026, the IMF projects an annual inflation rate of 16.4%, while private analysts surveyed in the March 2026 Market Expectations Survey (Relevamiento de Expectativas del Mercado – REM) forecast an annual inflation rate of approximately 26%. As of the date of this annual report, the Argentine Government appears to have achieved a degree of stabilization in the value of the Argentine Peso through various fiscal consolidation measures, including reductions in public expenditure and constraints on monetary financing of the fiscal deficit. Notwithstanding this progress, inflation in Argentina remains elevated by international standards, and the economy continues to operate in a transitional stabilization phase. Any reversal or stalling of this disinflation trend could affect Argentina’s foreign competitiveness, negatively impact employment and the level of economic activity and undermine confidence in Argentina’s banking system, which may further limit the availability of domestic and international credit to businesses. These risks are compounded by the structure of Argentine sovereign debt, a portion of which continues to be adjusted by the “CER” (the Reference Stabilization Coefficient), a currency index that is strongly correlated with inflation. Therefore, any significant increase in inflation would drive a corresponding increase in Argentina’s external debt, either in whole or in part, as appropriate and, consequently, in Argentina’s financial obligations, which could exacerbate the stress on the Argentine economy. An inflationary environment could undermine our operational results, adversely affect our ability to finance the working capital needs of our businesses on favorable terms and our operational results and cause the market value of our ADSs and our common shares to decline. There is uncertainty regarding the effectiveness of the policies implemented by the Argentine Government to control, maintain and further reduce inflation and the potential impact of those policies in the future. Argentina’s economic history demonstrates that periods of relative stability have frequently been followed by renewed inflationary episodes triggered by political transitions, external shocks, fiscal imbalances, or changes in monetary policy. We cannot assure that the inflation rate will not increase in the future or that measures taken or to be taken by the Argentine Government to control inflation will be effective in the long term. High inflation may adversely affect the Argentine economy, which in turn may have a negative impact on our financial condition and operational results. 12 Table of Contents The interruption of the publication of Argentine economic indexes or changes in their calculation methodologies could affect the projections made by the Company The INDEC is Argentina’s main official agency responsible for collecting, producing, and publishing nationwide statistical data, including the CPI. Historically, there have been concerns regarding the accuracy and independence of the INDEC statistics, and such concerns have periodically resurfaced. In 2014, the INDEC established the CPI, which reflects a broad measurement of consumer prices, considering price information from the 24 provinces of the country, divided into six regions. Faced with the credibility of the CPI, as well as other indices published by the INDEC, being called into question, the Argentine Government declared a state of administrative emergency for the national statistical system and the INDEC on January 8, 2016, based on the determination that the INDEC had failed to produce reliable statistical information, particularly with respect to CPI, GDP, inflation and foreign trade data, as well as with poverty and unemployment rates. The INDEC temporarily suspended the publication of certain statistical data until the reorganization of its technical and administrative structure to recover its ability to produce reliable statistical information. In 2017, the INDEC began publishing a National CPI, which is based on a survey conducted by the INDEC and several provincial statistical offices in 39 urban areas including each of Argentina’s provinces. In February 2026, the head of the INDEC resigned amid disagreements with the Ministry of Economy regarding the timing and criteria for implementing a new CPI calculation methodology. Although the agency has not recently faced significant public controversy over the accuracy of its data, the resignation reflected technical and policy disagreements over the methodological update. Future methodological or institutional changes could still give rise to challenges or undermine confidence in official statistics. Any future required correction or restatement of the INDEC indexes could result in decreased confidence in Argentina’s economy, which, in turn, could have an adverse effect on our ability to access international capital markets to finance our operations and growth, and which could, in turn, adversely affect our operational results and financial condition and cause the market value of our ADSs and our common shares to decline. Argentina’s ability to obtain financing from international markets could be limited, which may impair its ability to implement reforms and foster economic growth Argentina has historically faced difficulties in accessing capital markets due to its history of debt restructuring and creditor litigation. Since the 2001 crisis, the country has undergone multiple restructurings, including debt swaps in 2005, 2010 and 2020, as well as agreements with the IMF in 2018, 2022 and 2025. These processes have allowed refinancing commitments but have affected investors’ confidence and macroeconomic stability. Argentina also remains subject to numerous arbitration and litigation proceedings before ICSID, UNCITRAL tribunals, and U.S. and foreign courts, arising from emergency economic measures and sovereign debt defaults. Adverse outcomes in these proceedings could result in significant monetary awards and enforcement actions, further limiting Argentina’s financial resources and access to international financing. Despite credit rating upgrades in 2025 following fiscal improvements, Argentina’s debt sustainability remains uncertain as continued multilateral financing depends on meeting fiscal and reserve accumulation targets the country has previously failed to achieve. See “Any downgrade in Argentina’s and/or Pampa’s credit rating or rating outlook could adversely affect both the rating and the market price of the Company’s ADSs and shares.” The country has resorted to international organizations such as the IMF and the Paris Club to obtain financing, with successive revisions and disbursements conditioned on the fulfillment of fiscal and monetary goals. In this context, the current administration has continued with debt negotiations and payments. On April 8, 2025, the IMF and the Argentine Government reached a staff-level agreement on a comprehensive economic program that could be supported by a 48-month arrangement under the Extended Fund Facility (EFF) totaling U.S.$ 20 billion. The IMF’s Executive Board approved the arrangement on April 11, 2025, with an immediate disbursement of U.S.$ 12 billion. The first review, completed in July 2025, resulted in an additional disbursement of approximately U.S.$ 2 billion, though the IMF noted that net international reserves targets had been missed in mid-June 2025, with a waiver granted in August 2025. 13 Table of Contents Alongside the IMF’s support, Argentina secured other significant bilateral and multilateral financing arrangements in 2025, including agreements reached between the BCRA and the People’s Bank of China in April 2025, as well as financing from the Inter-American Development Bank and the World Bank. Additionally, the BCRA entered into a U.S.$ 2 billion repurchase agreement with international private banks to bolster foreign currency reserves. In October 2025, the Argentine Government and the U.S. Treasury announced a U.S.$ 20 billion currency swap line financed through the Treasury Department’s Exchange Stabilization Fund (ESF). Despite these financing arrangements, Argentina’s debt sustainability remains uncertain. The country must service over U.S.$ 45 billion in foreign debt obligations over the next three years, including more than U.S.$ 15 billion owed to the IMF. Continued access to IMF disbursements and other multilateral financing depends on Argentina’s ability to meet fiscal, monetary, and reserve accumulation targets, which the country has previously failed to achieve. Such a failure, or a deterioration in access to foreign investment and financing could hinder sustainable growth, aggravate fiscal problems and increase inflation. The difficulty in sustaining growth with price stability could lead to a new episode of economic instability, affecting both public finances and the private sector. For private sector actors, such as us, this scenario represents higher financing costs, restrictions on access to credit and risks derived from macroeconomic volatility. Uncertainty about the Government’s ability to implement effective policies casts doubt on the stability of the business environment, affecting the private sectors’ planning and growth perspectives. Argentine corporations may be restricted from making payments in foreign currencies or from importing certain products Exchange controls could adversely affect our financial condition or results of operations and our ability to meet our foreign currency obligations and execute our financing plans. Despite the substantial liberalization of restrictions on accessing the foreign exchange market for individuals, certain restrictions remain in effect for corporations in Argentina. See “Item 10. Additional Information - Exchange Controls”. These restrictions affect corporations’ ability to access the MLC to acquire foreign currency to transfer funds to other countries, service debt, make payments outside Argentina and other operations which require, in some cases, prior approval by the Central Bank. These restrictions may affect our operations and expansion projects, which require the import of equipment, services and other goods for which payment may be restricted. The Argentine Government may reimpose or create further restrictions on the access to the MLC. In such a case, our ability to make payments outside Argentina and to comply with our foreign currency obligations may be adversely affected. We cannot predict what the impact of future changes to exchange control policies would be on the Argentine economy or on our financial position. During 2025, the Argentine Government replaced its crawling peg exchange rate regime with a floating band, under which the Peso moves freely within a range that widens monthly. It has also pursued policies aimed at currency competition, permitting transactions in Pesos, U.S. Dollars, or other currencies. The Government could further modify the exchange rate regime by creating multiple exchange rates for different types of transactions, substantially modifying the applicable exchange rate at which we acquire currency to service our outstanding foreign currency-denominated liabilities or even dollarize the economy, as Milei expressed during his presidential campaign. We cannot predict what the impact of such policy would be on the Argentine economy and our financial position if they were adopted. Additional volatility, appreciation or depreciation of the Peso against the U.S. Dollar or reduction of the Central Bank’s reserves because of currency intervention could adversely affect the Argentine economy and our ability to service our debt obligations and could affect the value of our ADSs and our common shares. We cannot assure you that the official exchange rate will not fluctuate significantly in the future. Despite the current administration’s intention to further eliminate restrictions, there can be no assurances regarding future modifications to exchange controls or whether they will be eliminated for the short or long term. In the future, the Argentine Government may introduce new exchange controls and/or strengthen the existing ones, create restrictions on transfers to other countries, restrictions on capital movement or other measures in response to an eventual capital flight, further inflation or a significant depreciation in the Peso, measures that could, in turn, affect our ability to access the international capital markets. We cannot predict whether, and to what extent, the value of the Argentine Peso may depreciate or appreciate against the U.S. Dollar or other foreign currencies, and how these uncertainties will affect our businesses. Existing and future measures may negatively affect Argentina’s international competitiveness, discourage foreign investments and lending by foreign investors or increasing foreign capital outflow, which could have an adverse effect on economic activity in Argentina, and which in turn could adversely affect our business and results of operations. We cannot predict how these conditions will affect our ability to meet our liabilities denominated in currencies other than the Argentine Peso. Any limitations or restrictions on transferring funds abroad imposed by the Government could undermine our ability to access international capital markets, pay dividends on our ADSs or make payments (of principal or interest) under our outstanding indebtedness in U.S. Dollars, as well as to comply with any other obligation denominated in foreign currency, to import certain products or goods that we use as inputs or affect in other ways our business and our operational results, or cause the market value of our ADSs and our common shares to decline. 14 Table of Contents Argentine public expenditure may generate negative consequences for the Argentine economy Public expenditure has significantly increased throughout the last decades in Argentina. In the past, the Argentine Government adopted several measures to finance its high public expenditure, including, among others, using the resources of the Central Bank and the ANSES to fund its financial needs, and implementing an expansionary monetary policy that increased inflation levels. The current administration has implemented a significant fiscal consolidation program aimed at eliminating the fiscal deficit through reductions in public spending. Measures taken to achieve this have included (i) devaluing the Argentine Peso by 54% against the U.S. Dollar; (ii) suspending public works; (iii) reducing subsidies for energy and transportation services; (iv) halting official advertising; (v) reducing the number of ministries and secretariats; and (vi) reducing the size of the public sector workforce. As a result of the measures taken by the current administration, in December 2025, primary expenditure in the National Public Sector fell by 0.2% year-over-year in real terms. Moreover, according to statistical information published by the Ministry of Economy, as of December 2025, Argentina achieved a primary surplus of Ps. 11,769,219 million, thus closing 2025 with a surplus of 1.4% of GDP and registering a financial surplus. On December 27, 2025, the Argentine Senate passed the 2026 budget by a vote of 46 to 25, marking the first budget approved by Congress since President Milei took office. The 2026 budget projects a primary surplus equivalent to 1.2% of GDP. We cannot predict how the measures that the Argentine Government has applied and may continue to apply will impact the Argentine economy and, in turn, our business, our financial condition and the result of our operations. Moreover, we cannot be certain that the fiscal surplus generated by President Milei’s spending cuts will be sustained or that spending cuts will not lead to political and social upheaval. Opposition to the current administration’s austerity measures could result in a return to prior levels of public spending. A new fiscal deficit may generate further complications for the Argentine Government’s ability to access the financial markets in the long term, and, at the same time, further limit Argentine corporations’ access to those markets. See “Argentina’s ability to obtain financing from international markets could be limited, which may impair its ability to implement reforms and foster economic growth”. Failure to adequately address actual and perceived risks of institutional deterioration and corruption may adversely affect Argentina’s economy and financial condition A lack of a solid and transparent institutional framework for contracts with the Argentine Government and its agencies and corruption allegations have affected and continue to affect Argentina. Argentina ranked 104 of 182 countries in the Transparency International’s 2025 Corruption Perceptions Index. Ongoing investigations and allegations of corruption involving high-ranking government officials may create political instability and adversely affect Argentina’s economy and investment climate. As of the date of this annual report, there are various ongoing investigations into allegations of money laundering and corruption being conducted by the Office of the Argentine Federal Prosecutor, which have negatively impacted the Argentine economy and political environment. Depending on the results of these investigations and how long it takes to finalize them, companies involved may be subject to, among other consequences, a decrease in their credit ratings, having claims filed against them by investors in their equity and debt securities, and may further experience restrictions on their access to financing through the capital markets, all of which will likely decrease their income. Additionally, if criminal cases against companies move forward, they may be restricted from rendering services or may face new restrictions due to their customers’ internal policies and procedures. These adverse effects could restrict these companies’ ability to conduct their operating activities and to fulfill their financial obligations. Consequently, the number of suppliers available for our operations may be reduced which could in turn have an adverse effect on our commercial activities and results of operations. 15 Table of Contents The Argentine Government has announced several measures aimed at strengthening Argentina’s institutions and reducing corruption. These measures include creating a special prosecutor’s office in charge of investigations involving national and provincial officials related to illicit enrichment and asset increases, plea bargains in exchange for cooperation with the judiciary in corruption investigations, greater access to public information, the seizure of assets from officials prosecuted for corruption, expanded powers for the Anti-Corruption Office, and the enactment of a new public ethics law, among others. However, the effectiveness and independence of these mechanisms have come under scrutiny. During 2025, a special investigative task unit established to investigate allegations of corruption was dissolved by presidential decree after only three months. The Anti-Corruption Office cleared senior government officials of wrongdoing in matters that remain subject to ongoing judicial and congressional investigations, and a congressional commission accused Executive Branch officials of systematically obstructing its inquiries. We cannot guarantee that existing anti-corruption measures will be effectively implemented or that they will achieve the desired result. We cannot estimate the impact that the new measures could have on the Argentine economy. Similarly, it is not possible to predict the duration of corruption investigations, nor which companies might be involved or how far-reaching the effects of these investigations might be, particularly in the energy sector, or if there will be any other future investigations in this or other industry, which may negatively impact the Argentine economy. In turn, the decrease in investor confidence resulting from any of these, among other issues, could have a significant adverse effect on the growth of the Argentine economy, which could, in turn, harm our business, financial condition and operational results and affect the trading price of our common shares and ADSs. Our operating costs could increase as a result of the promotion or adoption of certain measures by the Argentine Government as well as pressure from union sectors We are subject to substantial and evolving risks associated with labor regulations, wage inflation, and collective bargaining activities in Argentina, any of which could increase our operating costs, disrupt our operations, and adversely affect our financial performance and results of operations. In the past, the National Government promoted and adopted laws and collective labor agreements that imposed on private sector employers the obligation to maintain certain salary levels and provide additional benefits to their employees. In addition, employers have come under strong pressure from employees and unions to grant wage increases and other benefits. The current Argentine administration has pursued a series of labor-market reforms. DNU No. 70/23 and the Bases Law enacted measures aimed at easing existing labor regulations, reducing mandatory employer contributions, and introducing greater flexibility in employment contracts. However, these measures have been subject to judicial challenges and partial suspensions, and their scope, enforceability and ultimate validity remain uncertain. If key provisions are struck down or narrowed, we may be subject to the reinstatement of prior, more burdensome regulatory requirements. Moreover, Law No. 27,802 was enacted, modifying certain aspects of labor law. However, following the court ruling issued on March 30, 2026, which granted a preliminary injunction suspending the application of certain provisions of the recent labor reform, the scope and implementation of such changes may be limited pending further judicial review and a final decision on the merits (see “The policies or measures adopted by the Argentine Government from time to time may adversely affect the Argentine economy and the sectors in which we operate”). Notwithstanding the measures implemented by the current administration (see “The policies or measures adopted by the Argentine Government from time to time may adversely affect the Argentine economy and the sectors in which we operate”) aimed at reducing the involvement of the government in the private sector, we cannot assure that such measures will achieve their intended purpose, that such measures will not be reversed or limited in any way in the future or that new measures that could increase minimum wages, mandatory benefits, severance obligations, or other employer-borne labor costs will not be enacted. Any salary increase and/or any other labor cost could result in higher costs and adversely affect the results of the Company’s operations. See “We employ a largely unionized labor force and could be subject to organized labor action, including work stoppages”. External shocks and “contagion” effects could have an adverse effect on the Argentine economy Although economic conditions vary from country to country, investors’ perceptions of events occurring in certain countries have in the past substantially affected, and may continue to substantially affect, capital flows into and investments in securities of issuers from other countries, including Argentina. The effects of a global or regional financial crisis and related turmoil in the global financial system may have a negative impact on our business, capacity to access credit and international capital markets, financial condition and operational results, which is likely to be more severe on an emerging market economy, such as Argentina. There can be no assurance that the Argentine financial system and securities markets will not be adversely affected by policies that may be adopted by foreign governments or the Argentine Government in the future. Argentina can also be adversely affected by negative economic or financial events that take place in other countries, subsequently affecting our operations and financial condition, including our ability to repay our debt at its maturity date. 16 Table of Contents This occurred on numerous occasions, such as in 2008, when the global economic crisis resulted in a sharp economic decline in Argentina’s economic activity throughout 2009, accompanied by inflationary pressures, depreciation of the Peso and a drop in consumer and investor confidence. In 2020, a new global financial crisis began as a result of Covid-19. Similarly, in 2022, another crisis was triggered because of the military invasion of Ukraine by the Russian Federation, which had a strong impact on the world’s main stock exchanges and on the economic and trade relations of many countries. Economic slowdowns, especially in Argentina’s major trading partners such as Brazil, led to declines in the Argentine economy in the past. The administration of U.S. President Donald Trump has introduced significant changes in trade and regulatory policies, including tariffs, trade restrictions, and enforcement measures that could affect cross-border commerce and foreign business operations. In April 2025, President Trump signed a series of executive orders imposing various reciprocal tariffs, and other governments have imposed and may continue to impose retaliatory tariffs, trade restrictions or other trade barriers. On February 20, 2026, the U.S. Supreme Court ruled that these reciprocal tariffs, which were imposed under the International Emergency Economic Powers Act (“IEEPA”), are unconstitutional. The effect on global economic growth and trade of these measures, as well as the full implications of this ruling, remains uncertain, and could disrupt global trade flows, and increase operational costs for companies reliant on international supply chains. The United States and Argentina agreed to a Framework for an Agreement on Reciprocal Trade and Investment in November 2025, under which certain Argentine exports were exempted from reciprocal tariffs. Following the U.S. Supreme Court’s ruling of February 20, 2026, the IEEPA-based reciprocal tariffs on Argentine imports were invalidated and subsequently terminated, although other trade measures remain in place and additional measures have been announced. Steel and aluminum continue to be subject to a 50% tariff rate. U.S. trade policy has been characterized by significant volatility and uncertainty, with tariff rates and covered products changing frequently and with limited advance notice. Tariffs may be reimposed under alternative legal authorities, further increased, expanded to additional products, or modified at any time. There can be no assurance that current trade arrangements will continue or that future changes to U.S. trade policy will not adversely affect Argentina’s economy or our operations. Any such changes, or retaliatory measures by other countries, could increase our costs for imported materials and equipment, disrupt our supply chains, and adversely affect our business, results of operations, and financial condition. On January 3, 2026, the United States conducted a military operation in Venezuela resulting in the capture of Nicolás Maduro and his spouse on drug trafficking-related charges, with the Venezuelan Supreme Court subsequently designating Vice President Delcy Rodríguez as acting president. Further escalation of the situation in Venezuela could lead to significant market and other disruptions, which could have a material adverse effect on Latin America and global energy prices, thereby impacting our business, financial position, results of operations and cash flows. At the same time, the war between Ukraine and Russia has had a significant economic impact worldwide, causing high volatility in the prices of primary commodities. Any further escalation of the conflict could lead to increased volatility in global oil and gas prices. Destabilization of global oil and gas prices could reduce the price of oil and natural gas and adversely affect our profitability. Increases in oil and gas prices may not persist and could be followed by price decreases based on factors beyond our control, including geopolitical events. In this sense, in Argentina, the natural gas supply may be affected, with negative effects on the energy generation, especially for industries. The shortage of natural gas may adversely affect our generation dispatch assets. While we do not have any material business or financial ties to Russia or Ukraine as part of our own business, the impact of higher energy prices and higher prices for certain goods and services resulting in higher inflation and disruptions to financial markets across the globe may impact our business in the future. Further escalation of such armed conflict could lead to supply disruptions and higher energy costs, among others, which could adversely affect our results of operations. The ongoing conflict between Israel, Hamas, and Hezbollah, together with broader hostilities across the Middle East, has contributed to world economic instability and uncertainty in global financial markets, adversely affecting our operations. The United Nations has reinstated sanctions against Iran in connection with its nuclear program, and the United States has intensified its pressure campaign through targeted sanctions against entities linked to the financing of Hamas and Hezbollah. President Javier Milei has also expressed a pro-Israeli position, and the Argentine Government has included Hamas in the list of terrorist organizations. 17 Table of Contents On February 28, 2026, the United States and Israel commenced large-scale airstrikes against Iran, targeting military, governmental, and nuclear-related infrastructure, resulting in the death of Iran’s Supreme Leader, Ayatollah Ali Khamenei. Iran responded with widespread missile and drone attacks against Israel, U.S. military bases, and several Gulf states, causing substantial disruption to airspace, energy infrastructure, and civilian life across the Middle East, with significant casualties, displacement, and market volatility. The war in Iran has materially heightened uncertainty in international markets and has led to sustained volatility in global energy prices. On April 7, 2026, the United States and Iran entered into a two-week ceasefire agreement, which led to a sharp decline in oil prices. There can be no assurance the ceasefire will be extended or result in a lasting resolution of hostilities. Given the strategic importance of the region to global oil supply, any resumption or escalation of hostilities or a prolonged conflict in the region could have a material impact on our business, financial condition, and results of operations. There can be no assurance that the Argentine financial system and securities markets will not be adversely affected by policies that may be adopted by foreign governments or the Argentine Government in the future, or by events in the economies of developed countries or in other emerging markets. Finally, international investors’ perceptions of events occurring in one market may generate a “contagion” effect by which an entire region or class of investment is disfavored by international investors. Argentina could be adversely affected by negative economic or financial developments in other emerging and developed countries, which in turn may have a material adverse effect on the Argentine economy and, indirectly, on our business, financial condition and results of operations, and the market value of our ADSs and common shares. The effects of an economic crisis on our customers and on us cannot be predicted. Weak global and local economic conditions could lead to reduced demand or lower prices for energy, hydrocarbons and related oil products and petrochemicals, which could have a negative effect on our revenues. Economic factors such as unemployment, inflation and the unavailability of credit could also have a material adverse effect on the demand for energy and, therefore, on our business, financial condition and operational results. The financial and economic situation in Argentina or in other countries, such as Brazil, may also have a negative impact on us and third parties with whom we do, or may do, business. The Argentine economy and finances may be adversely affected by declines in international commodity prices or in the production levels of commodities The commodities market is characterized by its volatility. Commodities exports contribute significantly to the revenues of the Argentine Government. Consequently, the condition of the Argentine economy remains relatively dependent on the price of its exports, particularly soybeans and other agricultural products. Argentina suffered severe droughts during the 2018 and 2023 growing seasons that caused significant economic headwinds for Argentina. The 2025 season has again faced climate volatility, with drought and extreme heat in late December 2024 and January 2025 affecting key growing regions, particularly in northeastern Argentina. Additionally, record soybean production in Brazil and other South American producers has contributed to downward pressure on global commodity prices, potentially affecting Argentina’s export revenues. A sustained decrease in the international price of the main commodities exported by Argentina, or any future climate event or condition may have an adverse effect on the agricultural sector. This would negatively impact the revenues of the Argentine Government and its capacity to comply with the payments of its public debt, eventually generating recessive or inflationary pressures, thus affecting our business, financial situation and the results of our operations. Any downgrade in Argentina’s and/or Pampa’s credit rating or rating outlook could adversely affect both the rating and the market price of the Company’s ADSs and shares Argentina’s long-term debt denominated in foreign currency, as of the date of this report, is rated “Caa1” by Moody’s, “CCC+” by S&P and “CCC+” by Fitch. Pampa and its subsidiaries are also assigned credit ratings, which are based on information provided by Pampa or obtained by risk rating agencies from independent sources. These ratings are also influenced by the credit ratings of Argentine Government bonds and general opinions related to the Argentine financial system considered as a whole. During 2025, major credit rating agencies upgraded both Argentina’s sovereign ratings, reflecting the country’s improved fiscal discipline and macroeconomic stabilization. However, the agencies continue to note Argentina’s external vulnerabilities and foreign currency constraints. 18 Table of Contents Along with these sovereign upgrades, Pampa’s ratings also improved. In February 2025, S&P upgraded Pampa’s debt rating to “B-” from “CCC” as a result of improved sovereign-related constraints and credit conditions and later, in August 2025, upgraded Pampa’s stand-alone rating from “b+” to “bb-”. On March 3, 2026, Fitch also upgraded Pampa’s Long-Term Foreign and Local Currency Issuer Default Ratings from “B-” to “B” and its senior unsecured notes from “B” to “B+” with a Recovery Rating of “RR3”. Notwithstanding these developments, the Company cannot guarantee that Pampa’s ratings or Argentina’s rating outlook will remain stable. A downgrade, suspension or withdrawal of Pampa’s credit ratings could give rise to the following consequences, among others: (i) an increase in financing costs and other difficulties related to fundraising; (ii) the need to provide additional guarantee in relation to financial market operations; and (iii) the termination or cancellation of existing agreements. Risks Related to our Company We operate a material portion of our business pursuant to public concessions granted by provincial and national governments, which may not be renewed, or may be revoked or terminated, and whose economic and other conditions may change We conduct a material part of our businesses pursuant to public concessions granted by provincial and national governments in Argentina to Pampa and other companies in which we hold interests. These concessions contain several requirements regarding the operation of those businesses and compliance with laws and regulations. Compliance with our obligations under our concessions is, in certain cases, secured by a pledge of our shares in the concessionaires in favor of the governments. Accordingly, upon the occurrence of specified events of default under these concessions, the governments would be entitled to foreclose on their pledge of the concessionaire and sell our shares in that concessionaire to a third party. Such sales would have a severe negative impact on our ability to operate a material portion of our business, and as a result, our operational results would be materially adversely affected. Moreover, our concessions also generally provide for termination in the case of insolvency or bankruptcy of the concessionaire. If any of our concessions are terminated or if any government forecloses its pledge over the shares we own in any of our concessionaire companies, or if, upon termination, such concessions are not renewed or extended or are only renewed or extended subject to further economic or other conditions, such companies may not be able to continue to operate as a going concern or their operational and financial condition may be adversely affected by such new requirements. In turn, our consolidated operational results would be materially adversely affected and the market value of our shares and ADSs could decline. Our performance is largely dependent on recruiting and retaining key personnel Our current and future performance and the operation of our business are dependent upon the contributions of our senior management and our skilled team of engineers and other employees. We depend on our ability to attract, train, motivate and retain key management and specialized personnel with the necessary skills and experience. There is no guarantee that we will be successful in retaining and attracting key personnel and the replacement of any key personnel who were to leave could be difficult and time-consuming. The loss of the experience and services of key personnel or the inability to recruit suitable replacements and additional staff could have a material adverse effect on our business, financial condition and operational results. We employ a largely unionized labor force and could be subject to organized labor action, including work stoppages The sectors in which we operate are generally unionized across the country. As of December 31, 2025, 50.73% of our workforce was represented by unions under collective bargaining agreements. Although our relations with trade unions have been historically stable, we cannot be sure that we will not experience work stoppages or disruptions in the future, which could have material adverse effects on our business and revenues. A primary reason for this is that our collective bargaining agreements are negotiated on an annual basis. As such, we are unable to guarantee the continuity of current terms and conditions in subsequent collective bargaining agreements, nor that we will not be subject to strikes or work stoppages before or during the negotiation process. 19 Table of Contents If we are unable to negotiate salary agreements or are subject to strikes or work stoppages, our operations, financial condition and the market value of our shares and ADSs could be materially affected in an adverse way. We could be subject to accidents or other events that may not be covered by our insurance policies We carry insurance policies that are consistent with industry standards in each of our different business segments. Although we believe our insurance coverage is commensurate with international standards, no assurance can be given of the existence or sufficiency of risk coverage for any particular risk or loss both in our ongoing businesses or in the construction stages of our ongoing or future projects. If an accident or other event occurs that is not covered by our current insurance policies in any of our business segments or projects, we may experience material losses or have to disburse significant amounts from our own funds, which may have a material adverse effect on our net profits and our overall financial condition and the market value of our shares and ADSs. We conduct a portion of our operations through joint ventures and co-controlled companies, and our failure to continue such joint ventures and co-controlled companies or to settle any potential material disagreements with our partners could have a material adverse effect on the success of these operations We conduct a portion of our operations through joint ventures and co-controlled companies and, as a result, the continuation of such joint ventures and co-controlled companies is vital to our continued success. In the event that any of our partners were to decide to terminate its relationship with us in any such joint venture or co-controlled companies or sell its interest in such joint venture, we may not be able to replace our partner or obtain the necessary financing to purchase our partner’s interest. Furthermore, in certain cases such as Transener and TGS, we cannot hold a controlling interest due to applicable Argentine regulations. As a result, the failure to continue some of our joint ventures or co-controlled companies or to resolve any potential disagreement with our partners or to find new partners could adversely affect our ability to conduct the business that is the subject of such joint venture or co-controlled company, which would in turn negatively affect our financial condition and operational results and the market value of our shares and ADSs. Our derivative risk management activities could result in financial losses We may enter derivative financial instruments such as foreign exchange, interest rate and commodity hedges, among others, to mitigate market risks of certain present or future assets to whose prices we are exposed. Although we would only execute non-speculative trades, we might be exposed to adverse fluctuations in the price of the assets underlying the derivative contracts, such contracts might fail to provide perfect hedging for the nature of the risks or our counterparties might fail to perform their obligations, any of which could result in financial losses and adversely affect our business, financial condition and results of operations. We may not be able to effectively hedge our currency risk in full regarding a devaluation of the Argentine Peso Although a significant portion of our revenue in the spot market for power generation is denominated in U.S. Dollars, our revenues are mainly collected in Argentine Pesos at an exchange rate that is fixed at the end of each month. As a result, we are exposed to exchange rate fluctuations between the rate-fixing date and the actual receipt of revenue. Furthermore, a significant portion of our existing financial indebtedness is denominated in U.S. Dollars. If we are not able to effectively hedge all or a significant portion of our currency risk exposure, a devaluation of the Argentine Peso may have a material adverse effect on our financial condition and results of operations. We are or could be involved in various legal proceedings which could result in unfavorable rulings against us Our business may expose us to litigation relating to labor, environmental, health and safety matters, regulatory, tax and administrative proceedings, governmental investigations, tort claims, and contract disputes, among other matters. We are or could be party to several legal proceedings, some of which have been pending for several years. We cannot be certain that these claims will be resolved in our favor and responding to the demands of litigation may divert our management’s time and attention and our financial resources. In the context of these proceedings, we may be required to pay fines or monetary damages, and we may also be subject to complementary sanctions or injunctions affecting our ability to continue our operations. While we may contest these matters vigorously and make insurance claims when appropriate, litigation and other proceedings are inherently costly and unpredictable, making it difficult to accurately estimate the outcome of actual or potential litigation or proceedings. See “Item 8. Legal Proceedings”. 20 Table of Contents Cybersecurity events, including cyber-attacks, could adversely affect our business, financial condition, operational results and cash flows We rely extensively on internet-based data processing, communication, public cloud services and information exchange platforms. The increasing sophistication and frequency of cyber-attacks, combined with our growing dependence on internet-connected equipment and systems, have heightened our exposure to potential cybersecurity incidents. In recent years, cyber-threats and cyber-attacks targeting critical infrastructure in the energy sector have become more sophisticated, frequent, coordinated and costly, and could be and have been targeted at our operations or information technology systems. These cyber-threats and cyber-attacks may include computer intrusions, fraud, phishing, identity theft and other disruptions that compromise the security of information stored within or transmitted through our computer systems and network infrastructure. The integrity of our information technology and operational systems could also be compromised as a result of the negligence or misconduct of our employees. If such integrity were to be materially compromised, this could lead to operational disruptions, fraud, property damage, theft of customer information, significant revenue losses, response and remediation costs, financial loss, increased regulatory scrutiny, litigation, and reputational damage. Additionally, our facilities, which maintain partial connectivity to manufacturer systems for maintenance and operational control, could be adversely affected by attacks targeting third party systems. Despite encountering various cybersecurity threats during 2025, none resulted in material incidents, losses or adverse effects on our operations, largely due to the measures we implemented. However, due to the evolving and increasingly sophisticated nature of these threats, we cannot provide any assurance that our current and future systems will be entirely free from vulnerabilities, and our risk and exposure cannot be fully quantified or entirely mitigated, making cybersecurity a material risk for us and our business. A cyber-attack, whether directed to us or third-party infrastructure on which we rely, could adversely affect our business, operational results, and financial condition. Our operations could cause environmental risks and any change in environmental laws could increase our operating costs Some of our operations are subject to environmental risks that could arise unexpectedly and cause material adverse effects on our operational results and financial condition. In addition, the occurrence of any of these risks could lead to personal injury, loss of life, environmental damage, repair and expenses, equipment damage and liability in civil, criminal and administrative proceedings. We cannot assure you that we will not incur additional costs related to environmental issues in the future, which could adversely affect our operational results and financial condition. In addition, we cannot ensure that our insurance coverage is sufficient to cover the losses that could potentially arise from these environmental risks. Moreover, we are subject to a broad range of environmental legislation, both in Argentina and in other countries where companies we have interests in are located. Local, provincial and national authorities in Argentina and other countries where companies we have interests in are located may implement new environmental laws and regulations and may require us to incur higher costs to comply with new standards. The imposition of more stringent regulatory and permit requirements in relation to our operations in Argentina could significantly increase the costs of our activity. We cannot predict the effects of the implementation of any new environmental laws and regulations on our financial condition and operational results. We may be unable to collect payments of amounts due, or to collect them in a timely manner, from CAMMESA, ENARSA, the Argentine Government and other customers As electricity generators, fuel producers and in our petrochemical business, we receive payments from CAMMESA, ENARSA, the Argentine Government and other customers. These payments could be altered and/or delayed. We collect funds from CAMMESA for energy and capacity sold on the spot market, as well as under PPAs. CAMMESA, in turn, supplies this energy to the distributors, who must make payments to CAMMESA for the electricity provided and are currently indebted to CAMMESA for substantial sums owed for the energy supplied. 21 Table of Contents Accordingly, payments to generators should be settled within 42 days from the end of each month; however, in recent years there have been significant delays in such payments. In addition, the Argentine Government has, at times, implemented exceptional mechanisms affecting the manner and timing of settlement of CAMMESA obligations. For example, during 2024, payments corresponding to the months of December 2023 and January 2024 were paid with Argentine Sovereign Bonds, resulting in significant losses to our results. Regarding direct contracts with customers, distributors and/or energy traders, the recent issuance of SE Resolution No. 400/25 reinstalled a Term Market (MAT) with certain restrictions (see “Item 4 - The Argentine Energy Sector – Electricity Regulatory Framework”). Consequently, not all of our generation units are eligible to participate in MAT contracts. Insofar as we are able to enter into such contracts, our revenues would depend on the timely collection of our credits from our customers. We cannot assure you that measures aimed at reducing the debt of distributors will be implemented, that CAMMESA will be able to pay generators or that the WEM Large Users will comply with their payment obligations. Furthermore, we have participated and continue to participate in programs aimed at promoting or incentivizing natural gas production by the Argentine Government to achieve self-sufficiency and, in turn, generate higher levels of activity, investment, and employment in the national natural gas sector. See “Item 4 - The Argentine Energy Sector - Oil & Gas Regulatory Framework”. Under these programs, we have entered into natural gas supply contracts with CAMMESA (which supplies this fuel to electricity market generators) and ENARSA, receiving payments from both entities as consideration for the gas supplied and a price supplement from the Argentine Government for such gas. Payments due from CAMMESA, ENARSA and the Argentine Government have suffered significant delays in recent years. SE Resolution No. 606/25 provided a 30-day period for ENARSA to establish the terms of such assignment. Such period was extended to 45 days by SE Resolution No. 36/26 and for an additional 180 days by SE Resolution No. 54/26. See “Item 4. The Argentine Energy Sector - Oil & Gas Regulatory Framework - Assignment of contracts with ENARSA”. We cannot assure you that the existing debts owed to the adhering producers will be resolved in a manner favorable to us, which could adversely affect our operational results, revenues, and financial position. Moreover, our operational results also depend on the timely collection of receivables from our other customers. Our customers’ ability to meet their payment obligations is heavily influenced by Argentina’s overall economic environment, including high inflation rates, fluctuations in disposable income, and restricted access to financing, as previously described in this annual report. See “Our business, operational results and financial condition depend on economic and political conditions in Argentina, which remain vulnerable”. Any significant economic downturn or sustained period of financial instability in Argentina could lead to an increase in payment defaults, higher delinquency rates, or requests for extended payment terms. If we experience a material increase in uncollectible accounts or a significant slowdown in our collection cycle, our liquidity, cash flows, and results of operations may be adversely affected. We cannot guarantee that CAMMESA, ENARSA, the Argentine Government and/or other customers will not experience payment delays, or that such payments will not be altered in any way. Such delays or modifications could negatively affect our operational results, revenues, investment plans and financial position, including our ability to pay our debts when due and, consequently, the market value of our shares and ADSs. Certain of our outstanding financial indebtedness includes bankruptcy, reorganization proceedings and expropriation events of default and we may be required to repay all of our outstanding debt upon the occurrence of any such events As of the date of this annual report, certain expropriation and condemnation events with respect to us may constitute an event of default, which, if declared, could trigger the acceleration of our obligations under the relevant indebtedness and require us to immediately repay all such accelerated indebtedness. In addition, a significant part of our outstanding financial indebtedness includes certain events of default related to bankruptcy and voluntary reorganization proceedings (concurso preventivo). If we are not able to comply with certain payment obligations as a result of our financial situation and if the requirements set forth in the Argentine Bankruptcy Law No. 24,522 are met, any creditor, including us, would be qualified to file for bankruptcy, or we would be able to file for a voluntary reorganization proceeding (concurso preventivo). In addition, certain of our outstanding financial indebtedness also includes cross-default or cross-acceleration provisions that could cause all of our indebtedness to be accelerated if the indebtedness including the expropriation or bankruptcy or reorganization proceeding events of default goes into default or is accelerated. In such case, we would expect to actively pursue formal waivers from the corresponding financial creditors to avoid such potential situation, but if those waivers are not timely obtained and an immediate repayment is required, we could face short-term liquidity problems, which could adversely affect our operational results and cause the market value of our ADSs to decline. 22 Table of Contents Covenants in our indebtedness could adversely restrict our financial and operating flexibility Some of our current indebtedness includes, and our future indebtedness may include, affirmative and restrictive covenants that limit our ability to create liens, incur additional indebtedness, dispose of our assets, pay dividends or consolidate, merge or sell part of our businesses. These restrictions may limit our ability to operate our business and may prohibit or limit our ability to enhance our operations or take advantage of potential business opportunities as they arise. The breach of any of these covenants or the failure to meet any of such conditions could result in a default under the relevant indebtedness. Our ability to comply with these covenants may be affected by events beyond our control, including prevailing economic, financial and industry conditions and the renegotiation of concessions and licenses used in our businesses. Natural disasters, pandemics, catastrophic events, terrorist attacks and operational failures could disrupt our assets and impair our ability to fulfill contractual commitments Our hydrocarbon blocks, pipelines or any other fuel transportation infrastructure, power generation facilities, power transmission infrastructure, or any third-party infrastructure that we rely on may be damaged or disrupted by flooding, fires, earthquakes, extreme weather events, and other catastrophic disasters arising from natural or accidental or intentional human causes. Public health crises, such as the Covid-19 pandemic or other similar crisis, could lead to labor stoppages or could cause demand for energy to plummet, negatively affecting our business. We could experience severe business disruptions, significant decreases in revenues based on lower demand arising from catastrophic events, or significant additional costs not otherwise covered by business interruption insurance clauses. There may be an important time lag between a major accident, catastrophic event or terrorist attack and our definitive recovery from our insurance policies, which typically carry non-recoverable deductible amounts and are subject to caps per event. In addition, any of these events could have adverse effects on the demand of some of our customers and of consumers generally in the affected market. Some of these considerations could have a material adverse effect on our business, financial condition and our result of operations. For example, during a storm that occurred in January, 2025, in San Rafael, Mendoza, significant damage was caused to the Atuel Canyon, rendering the Nihuil II and Nihuil III power plants out of service and inoperative. The corresponding insurance claims were filed under the terms of our All-Risk Operational insurance policy, and we initiated the loss adjustment process as well as official communications with the authorities. As of the date of this report, the remediation works of the sites have been completed and a thorough assessment of the assets performed. However, returning the units to commercial operation in good repair will require significant time and investment. These investments should be performed by the next concessionaries (see “We may face extra costs due to the termination of the concession agreements for HINISA, HIDISA and/or HPPL”). The units are still out of service. Additionally, our facilities are subject to the risk of mechanical or electrical failures and may experience periods of unavailability affecting our ability to fulfill our contractual commitments, such as during the general blackout suffered in June 2019. We cannot guarantee that any other event in the Argentine grid or any unplanned unavailability of our facilities will not damage or affect in any way our power generation and transmission units or adversely affect our financial condition or operational results and our ability to fulfill our contractual commitments, which could result in fines and penalties, consequently affecting our operational results. Our activities may be adversely affected by events in other countries in which we do business Although most of our operations and activities are concentrated in Argentina, we have investments in other countries in Latin America, including Bolivia and Ecuador. Latin America has experienced significant economic, social, political and regulatory volatility. In recent years, many governments in Latin America have taken steps to assert greater control or increase their share of revenues from the energy sector, spurred by soaring oil and gas prices and nationalist policies. The level of government intervention in the economy of Latin American countries has adversely affected our business and operational results, and it may adversely affect it in the future. 23 Table of Contents We continue evaluating investment projects to expand our activity, which could entail an increase in our indebtedness and additional costs We have entered or could enter into credit facilities and have incurred or will incur other forms of indebtedness, including for investment projects. Leveraged assets are more sensitive to declines in revenues, increases in expenses and interest rates, and adverse economic, market and industry developments. The incurrence of indebtedness could result in increased fixed payment obligations, and we may be required to agree to certain restrictive covenants, such as limitations on our ability to incur additional debt, limitations on our ability to make investments, and other operating restrictions that could adversely impact on our ability to conduct our business. Some of our subsidiaries’ and affiliates’ investment projects could be guaranteed by Pampa, resulting in the incurrence of additional guaranteed debt and causing us to become liable for such obligations. Therefore, if we declare bankruptcy or are liquidated, the guaranteed lenders will have priority over the claims for payment of our notes to the extent of the assets that constitute their guarantee. If such subsidiaries and affiliates are unable or fail to pay any of their indebtedness in respect of which our Company has provided a guarantee, we may be required to pay all amounts due under such indebtedness, which may affect our financial health and make us more vulnerable to adverse economic conditions. If assets remain after the payment of the guaranteed lenders, those assets could be insufficient to satisfy the credits of the holders of our corporate bonds and other unsecured debt, as well as the credits of other general creditors who will be entitled to participate pro rata with the holders of our corporate bonds. Additionally, the development of new projects is exposed to risks inherent to construction activities, such as cost overruns, particularly in inflationary environments, construction delays, increases in input and labor costs, and logistical or supply chain disruptions that could result in costs in excess of original estimates. These projects are also subject to obtaining and maintaining environmental and other regulatory permits, and delays or additional requirements could increase costs or postpone their execution. Furthermore, once completed, new projects may fail to achieve anticipated levels of efficiency, output or profitability due to adverse market, regulatory or operating conditions. Any of these factors could adversely affect the expected returns of our projects and have a material adverse effect on our results of operations and financial condition. Climate change, energy transition and regulatory framework promoted for such purposes could affect our business, our results of operations and financial condition Global climate change creates new challenges for the energy sector and its adverse effects are a common concern of humanity. Consequently, the United Nations and several countries have adopted, or are evaluating the adoption of new measures and/or regulatory requirements for the mitigation or reduction of GHG emissions in the atmosphere, such as taxes on carbon, raising efficiency standards or adopting cap and trade regimes. Certain mitigation actions could require radical changes to development models, such as the transition from the use of conventional energy sources to the use of renewable energy sources, which reduce environmental pollution, contribute to sustainable development and avoid global warming since the GHG emissions of renewable energy sources are usually very low. The risks associated with climate change involve severe weather events; legal and regulatory risks, including eventual litigation with respect to environmental damage and climate change; market risk; reputational risk with investors; lower consumption of fossil fuels; and energy transitions in the global economy towards a lower carbon energy matrix with the inclusion of substitute products for fossil fuels and greater use of electricity, which may cause a negative impact on the demand for our products in the long term and could have an adverse effect on our results of operations. The progress and challenges of the energy transition could have a significant adverse effect on the Company if it is unable to keep up with the pace of the global energy transition and allocate its resources towards efficient energy sources and resources to address the concerns related to climate change, which could have a material adverse effect on the results of our operations and our financial condition. Guarantees that we granted to third parties could be enforced We, or other companies within the Pampa Group, may from time to time grant guarantees in favor of third parties to support the payment or other commercial obligations of our subsidiaries, affiliates or other third parties. If the underlying obligor fails to satisfy its obligations, those guarantees could be enforced in accordance with their terms and conditions. 24 Table of Contents We cannot assure you that defaults or other triggering events will not occur in the future or that, if such events occur, they do not have an adverse effect on Pampa’s operations and consolidated financial results. Risks Related to Our Businesses Risks Related to our Oil and Gas Business Oil and gas companies have been affected by certain measures taken by the Argentine Government and may be further affected by additional changes in their regulatory framework The Argentine Government has historically implemented, and may continue to implement, significant regulatory changes affecting the oil and gas sector, creating ongoing uncertainty that could materially adversely affect our business, results of operations, and financial condition (see “The policies or measures adopted by the Argentine Government from time to time may adversely affect the Argentine economy and the sectors in which we operate”). Since December 2011, the Argentine Government has adopted from time to time a number of measures concerning the repatriation of funds obtained from oil and gas exportation and charges applicable to the production of liquid gas, which has affected the oil and gas business. Beginning in April 2012, the Argentine Government provided for the nationalization of YPF and imposed major changes to the system under which oil companies operate, principally through Law No. 26,741, Decree No. 1277/12 and Law No. 27,007. Further changes in such regulations may increase the adverse effect of such measures on the business, revenues and our results of operations and financial condition. Furthermore, the current administration of the Argentine Government has shown interest in including ENARSA in privatization processes. Since we operate in a context in which the governing law and applicable regulations change frequently, in part as the result of changes in government administrations, it is difficult to predict if and how our activities will be affected by such changes. We cannot affirm that the Argentine economic, regulatory, social and political framework or the policies or measures that the Argentine Government adopts or may adopt, will not adversely affect our business, financial condition and/or operational results. Argentine oil and gas production concessions and exploration permits are subject to certain conditions and may not be renewed or could be revoked, or their terms and economic conditions may be modified The Hydrocarbons Law provides for oil and gas concessions to remain in effect for 25, 30 or 35 years, depending on the concession, beginning on the date of their award, and further provides for the concession term to be extended for periods of ten additional years, subject to terms and conditions approved by the grantor at the time of the extension. See “Item 4. The Argentine Energy Sector - Oil & Gas Regulatory Framework”. We cannot assure you that our concessions will be extended in the future as a result of the review by the relevant authorities of the investment plans submitted for such purposes, or that additional requirements will not be imposed, or that the economic or other conditions applicable to obtaining or renewing such concessions or permits will not be imposed or changed. Hydrocarbon activities (including exploitation, industrialization, transportation and commercialization) in the territory of Argentina are deemed of “national public interest.” We cannot assure you that any measures that may be adopted by the Argentine Government to secure Argentina’s self-sufficiency in oil and gas supply or any other measures imposed by the national or provincial governments will not have a material adverse effect on the Argentine economy and, as a consequence, adversely affect our financial condition, our operational results and the market value of our shares and ADSs. Substantial or extended declines and volatility in the prices of crude oil, oil products and natural gas may have an adverse effect on our operational results and financial condition A significant amount of our revenue is derived from crude oil, oil products and natural gas sales. Factors affecting international prices for crude oil and related oil products include: political developments in crude oil producing regions, particularly the Middle East; the ability of the Organization of Petroleum Exporting Countries and other crude oil-producing nations to set and maintain crude oil production levels and prices; global and regional supply and demand for crude oil, gas and related products; competition from other energy sources; domestic and foreign government regulations; weather conditions; storage capacity and global and local conflicts, wars or acts of terrorism. We have no control over these factors. Although crude oil prices had maintained an increasing trend in recent years, at the beginning of 2020 the conflict between Saudi Arabia and Russia, which was magnified with the effects of the global crisis caused by Covid-19, resulted in a collapse of crude oil prices. In 2022, due to the conflict between Russia and Ukraine, and the fact that Russia is the second largest oil exporter in the world and the largest producer of natural gas, world oil prices jumped over U.S.$ 110 per barrel, and the cost of natural gas reached a new record high in Europe. 25 Table of Contents In 2025, oil prices declined compared to 2024 due to sluggish demand, weak economic activity, and trade uncertainty. OPEC+’s announcements of higher production targets added further downward pressure. On a monthly average basis, Brent crude oil spot prices declined from a high of U.S.$ 79 per barrel in January to a low of U.S.$ 63 per barrel in December, the lowest monthly average price since early 2021. During the first week of April 2025, developments in trade policy and oil production led to a significant drop in oil prices, driven in particular by tariffs on imports imposed by the United States; the Brent crude oil spot price fell by 14% between April 2 and April 7, 2025, reaching U.S.$ 66 per barrel. Natural gas spot prices diverged across global regions, declining below 2024 levels in Asia and Europe while rising in the United States. In March 2026, the war in Iran led to heightened concerns regarding potential disruptions to Middle Eastern oil supplies and critical transportation routes, contributing to increased volatility in global oil markets; in that context, the Brent crude spot price reached U.S.$ 122 per barrel on March 30, 2026 (see “External shocks and “contagion” effects could have an adverse effect on the Argentine economy”). As a result, we cannot assure that substantial or extended declines in international prices of crude oil and related oil products will not have a material adverse effect on our business, operational results and financial condition and the value of our proven reserves. In addition, significant decreases in the prices of crude oil and related oil products may require the incurrence of impairment charges in the future or cause us to reduce or alter the timing of our capital expenditures, and this could adversely affect our production forecasts in the medium-term and our reserves estimates in the future. Oil and gas prices and sale conditions could affect our level of capital expenditures The prices that we are able to obtain for our hydrocarbon products affect the viability of investments in new exploration and development activities, and as a result, the timing and amount of our projected capital expenditures for such purposes. We budget capital expenditures by considering, among others, the market prices for our hydrocarbon products. In the event that current domestic prices decrease, the ability to improve our hydrocarbon recovery rates, identify new reserves and carry out certain other capital expenditure plans is likely to be affected, which, in turn, could have an adverse effect on our operational results. Prices for oil and natural gas are subject to large fluctuations in response to relatively minor changes in the supply of and demand for oil and natural gas, market uncertainty, and a variety of other economic factors that are beyond our control. Historically, factors affecting the prices of oil and natural gas include: · changes in the supply of and demand for hydrocarbons, which are affected by general economic and business conditions; · the costs of exploring, producing, and delivering oil and gas; · the ability or willingness of the Organization of Petroleum Exporting Countries (“OPEC”) and the expanded alliance known as OPEC+ to set and maintain production levels for oil; · the level of oil and gas exploration and production activity; · the level of excess production capacity; · the level of refining and storage capacity; · the level of oil and gas inventories; · access to potential resources; · political and economic uncertainty, wars, armed conflicts and geopolitical unrest; · governmental laws, policies, regulations, subsidies, and other actions, including initiatives to promote the use of renewable energy sources; · speculation as to the future price of oil and the speculative trading of oil and gas futures contracts; · technological advances affecting energy consumption; and · extreme weather conditions, natural disasters, and public health or similar issues, such as pandemics and epidemics. 26 Table of Contents Limits on exports and imports of hydrocarbons and related oil products, including the imposition of export duties, other taxes and import regulations, have affected and may continue to affect our operational results The Argentine Government has, from time to time, introduced and revised export authorization requirements, import regulations and other measures affecting hydrocarbons and related oil products. These measures have limited our ability, and that of other oil and gas companies, to benefit from international market prices for these commodities, and have materially affected our competitiveness and operational results. See “Item 4. The Argentine Energy Sector - Oil & Gas Regulatory Framework”. In particular, the Argentine Government has periodically revised its natural gas export authorization procedures. On August 22, 2018, the Argentine Government issued a Natural Gas Exportation Procedure regulating the process to obtain the authorizations needed to export natural gas. On April 27, 2021, through SE Resolution No. 360/21, a new Natural Gas Exportation Procedure was established for obtaining such authorizations, which was subsequently modified by SE Resolution No. 774/22. The Argentine Government has also imposed and amended export duties on hydrocarbons through a series of decrees and legislative changes. On September 4, 2018, Decree No. 793/18 imposed an export duty on several goods, including natural gas, until December 31, 2020, consisting of a Ps. 4 tax on every U.S.$ 1.00 worth of exports, subject to a maximum rate of 12% on the value of exports. Thereafter, the Social Solidarity and Productive Reactivation Law modified the prior export duties for hydrocarbons that are commercialized in the external market. Subsequently, following the effective date of Decree No. 488/20 (Barril Criollo), exports of oil, natural gas and liquefied gas were exempted from export duties as long as the price of Brent published by the SE at the close of each month was equal to or lower than U.S.$ 45/bbl. Under that regime, the export duty rate was subject to a gradual increase up to 8% as the reference price rose, and such 8% rate applied if the price was equal to or higher than U.S.$ 60/bbl. The export duty regime for crude oil has been updated again pursuant to Decree No. 59/26, which introduced a distinction between conventional and unconventional crude oil production. Under this updated regime, for crude oil from conventional reservoirs, export duties do not apply when the international price is at or below U.S.$ 65/bbl, increase according to the applicable formula when such price is above U.S.$ 65/bbl but below U.S.$ 80/bbl, and are set at 8% when the price reaches or exceeds U.S.$ 80/bbl. We cannot guarantee that the Argentine Government will not create new export and import regulations or amend the ones currently in place. We cannot predict the impact that any such changes may have on our operational results and financial condition. We conduct most of our oil and gas operations through joint arrangements (joint operations for accounting purposes), in which we may not always act as operators. Our inability to maintain or resolve disagreements with our partners within such joint arrangements could materially affect the success of their operations We generally carry out most of our oil and gas exploration and exploitation activities through joint arrangements (joint operations for accounting purposes) entered into with third parties. Under the terms of these arrangements, one of the parties is appointed as operator and is responsible for conducting and managing the activities of the joint operation. We do not always act as operators and, in those cases, we are exposed to risks related to the operator’s performance, decisions, operational execution, and compliance with applicable agreements, laws and regulations. Actions or omissions by the operator could adversely affect the execution, efficiency or success of the joint operation and, as a result, could have a material adverse effect on our results of operations and financial condition. In addition, the continuation of the joint arrangements is fundamental to the success of those operations. If we are unable to resolve material disagreements with our partners, or if any of our partners were to terminate its participation in a joint operation or transfer its interest, we may not be able to replace such partner or obtain the financing necessary to acquire its interest. Any failure to resolve material disagreements or to maintain our joint arrangements on acceptable terms could impair our ability to continue the underlying operations, which could, in turn, materially affect our financial condition, results of operations and prospects. Our failure to comply with our investment commitments could negatively affect our operational results We have commitments to make certain investments, such as, among others, under investment agreements. Failure to comply with such commitments in a timely manner could result in a breach of the relevant partnership agreement, foreclosure of any guarantees and/or the loss of all rights over the underlying area which could have an adverse effect on our operational results. See “Item 4. The Argentine Energy Sector - Oil & Gas Regulatory Framework” and “Our Oil and Gas Business”. 27 Table of Contents Oil and gas activities are subject to significant economic, environmental and operational risks Oil and gas exploration and production activities are subject to particular economic and industry-specific operational risks, some of which are beyond our control, such as production, equipment and transportation risks, as well as natural hazards and other uncertainties, including those relating to the physical characteristics of oil or natural gas fields. Our operations may be curtailed, delayed or cancelled due to bad weather conditions, mechanical difficulties, shortages or delays in the delivery of equipment, compliance with governmental requirements, fire, explosions, blow-outs, pipe failure, abnormally pressured formations and environmental hazards, such as oil spills, gas leaks, ruptures, contamination of soil or water sources or discharges of toxic gases. If these risks materialize, we may suffer substantial operational losses or disruptions in our operations. Drilling may be unprofitable, not only with respect to dry wells, but also with respect to wells that are productive but do not produce sufficient net revenues to return a profit after drilling, operating and other costs are considered. Our oil and gas activities are substantially dependent upon the availability of water and our ability to dispose of produced water gathered from drilling and production activities. Restrictions on our ability to obtain water or dispose of produced water may have a material adverse effect on our operations Water is an essential component of drilling, completion and hydrocarbon production activities. Limitations or restrictions on our ability to secure sufficient amounts of water (including limitations resulting from natural causes such as drought), could materially and adversely impact our oil and gas operations. Severe drought conditions can result in local water districts taking steps to restrict the use of water in their jurisdiction for drilling and hydraulic stimulation in order to protect the local water supply. If we are unable to obtain water to use in our operations from local sources, it may need to be obtained from new sources and transported to drilling sites, or other facilities, resulting in increased costs, which could have an adverse impact on our financial condition and cash flows. Additionally, if we were unable to obtain water from any sources, we might be forced to halt our drilling and completion activities, which could have a material adverse effect on our growth prospects, financial condition, results of operations and cash flows. Unless we replace our oil and gas reserves, such reserves and production will decline over time The possibility of replacing our crude oil and gas reserves in the future depends on our ability to access new reserves through successful exploration, reserve acquisitions and investments. Although we have geological and engineering assessments that estimate certain unproven reserves and contingent and prospective resources, we cannot guarantee their successful exploration and future development. Moreover, oil and gas production declines as reserves are depleted, with the rate of decline depending on reservoir characteristics. Accordingly, the amount of proved reserves declines as these reserves are produced. Without successful exploration activities or reserves acquisitions, our proved reserves would decline as our oil and gas production would depend solely on our current portfolio of assets. The level of our future oil and natural gas reserves and production, and therefore our cash flow and income, are highly dependent on our success in efficiently developing current reserves, entering into new investment agreements and economically finding or acquiring additional recoverable reserves. While we have had success in identifying and developing commercially exploitable deposits and drilling locations in the past, we may be unable to replicate that success in the future. We may not identify any more commercially exploitable deposits or successfully drill, complete or produce more oil or gas reserves, and the wells that we have drilled and currently plan to drill may not result in the discovery or production of any further oil or natural gas. If we are not able to successfully find, develop or acquire sufficient additional reserves, our reserves and therefore our production may decline and, consequently, this may adversely affect our future operational results and financial condition. Our estimated oil and gas reserves are based on assumptions that may prove inaccurate We estimate our oil and gas reserves at least once a year. Our oil and gas reserves estimation as of December 31, 2025 was audited by GaffneyCline, as the Independent Reserves Engineers Firm, based on its year-end Reserves Report. Although classified as “proved reserves,” the reserves estimates set forth in the Reserves Report are based on certain assumptions that may prove inaccurate. The Independent Reserves Engineers Firm’s primary economic assumptions in estimates included oil and gas sales prices determined according to the guidelines described in the Reserves Report, future expenditures and other economic assumptions (including interests, royalties and taxes) provided by us. 28 Table of Contents The estimation process is initiated with an initial review of the assets by geophysicists, geologists and engineers. A reserves coordinator protects the integrity and impartiality of the reserves estimates through supervision and technical support to technical teams responsible for the preparation of the reserves estimates. Our reserves estimates are approved by the Executive Director of Oil and Gas. Reserves engineering is a subjective process of estimating underground accumulations involving a certain degree of uncertainty. Reserves estimates depend on the quality of the available engineering and geological data as of the estimation date and on the interpretation and judgment thereof. Oil and gas accumulations cannot be measured in an exact way, and estimates of other engineers may differ materially from those set out in this annual report. Numerous assumptions and uncertainties are inherent in estimating quantities of proved oil and gas reserves, including projecting future rates of production, timing and amounts of development expenditures and prices of oil and gas, many of which are beyond our control. Results of drilling, testing and production after the date of the estimate may require revisions to be made. The estimate of our oil and gas reserves would be impacted if, for example, we were unable to sell the oil and natural gas we produced. Accordingly, reserves estimates are often materially different from the quantities of oil and gas that are ultimately recovered, and if such recovered quantities are substantially lower than the initial reserves estimate, this could have a material adverse impact on our operational results. See “Item 4. Our Oil and Gas Business - Reserves”. We face significant competition in the acquisition of exploratory acreage and oil and natural gas reserves The Argentine oil and gas industry is extremely competitive. When we bid for exploration or exploitation rights with respect to a hydrocarbon block, we face significant competition not only from private companies, but also from national or provincial public companies that are highly competitive in the Argentine oil and gas market. As a result, we cannot assure you that we will be able to acquire new exploratory acreage or oil and gas reserves in the future, which could negatively affect our financial condition and operational results. There can be no assurance that the participation of national or provincial public companies in the bidding processes for new oil and gas concessions will not influence market forces in such a manner that could have an adverse effect on our financial condition and operational results. We may incur significant costs and liabilities related to environmental, social, health and safety matters Our operations, like those of other companies in the Argentine oil and gas industry, are subject to a wide range of environmental, health and safety laws and regulations. These laws and regulations have a substantial impact on our operations and could result in material adverse effects on our financial position and operational results. Environmental, health and safety regulation and case law in Argentina is developing at a rapid pace and no assurance can be provided that such developments will not increase our cost of doing business and complying with applicable regulations. In addition, due to concern over the risk of climate change, a number of countries have adopted, or are considering the adoption of, new regulatory requirements to reduce greenhouse gas emissions, such as carbon taxes, increased efficiency standards, or the adoption of cap and trade regimes. If adopted in Argentina, these requirements could make our products more expensive as well as shift hydrocarbon demand toward relatively lower-carbon sources such as renewable energies. We may also face opposition from local communities and negative media attention that could materially disrupt our operations. Although we are committed to operating in a socially responsible manner, several of our operations are carried out in regions where community relations present significant risks. Local communities, including indigenous communities, have engaged in various forms of protest against business activities in general, including oil and gas. We cannot ensure that any form of protest, including roadblocks, actions limiting access of our workers or contractors to our operations, sabotage, or any disruptive action will not impact our operations. Any such action could have an adverse effect on our reputation, financial condition, and results of operations, including our ability to service financial debt obligations. 29 Table of Contents Limitations on local pricing in Argentina may adversely affect our operational results In recent years, due to regulatory, economic and government policy factors, domestic prices of crude oil, gasoline, diesel and other fuels have differed substantially from the prices for such products prevailing on the international and regional markets, and our ability to increase or maintain prices to adjust to international price or domestic cost variations has been limited. See “Item 4. The Argentine Energy Sector - Oil & Gas Regulatory Framework”. The natural gas market in Argentina is subject to government regulations that could adversely affect our results. In particular, gas prices for residential consumers still remain subject to subsidies, and sale prices to electric power generation plants are also subject to regulatory constraints. These pricing limitations, combined with CAMMESA’s competitive bidding processes for power generation supply, have intensified competition and reduced demand from other market segments, resulting in fewer firm commitments and/or shorter contract terms. We cannot assure you that additional regulations affecting local natural gas prices will not be imposed in the future. We cannot assure you that we will be able to maintain or increase the domestic prices of our products, and limitations on our ability to do so could adversely affect our financial condition and operational results. Similarly, we cannot affirm that hydrocarbon prices in Argentina will track increases or decreases in hydrocarbon prices in the international or regional markets. Discrepancies between domestic and international prices may adversely affect our financial condition and operational results. We are exposed to contractions in the crude oil and natural gas demand and to contractions in the demand for any of their by-products Crude oil and natural gas demand are highly influenced by economic activity and growth locally and globally. While demand increased in the past, it has also experienced significant contraction and is subject to future volatility. Crude oil by-products demand may also contract under certain conditions, particularly during economic downturns. According to the latest OPEC estimates in December 2025, global demand for crude oil is expected to increase by 1.4 million barrels per day during 2026, but such expectations may not materialize due to the current world conflicts. See “External shocks and “contagion” effects could have an adverse effect on the Argentine economy”. A further contraction in demand or the maintenance of current demand levels for long periods of time could negatively affect our results of operations. Risks Related to Our Generation Business Government intervention in the electricity sector may have an impact on our business operations, financial condition and/or results of operations Historically, the Argentine Government has exerted significant influence on the economy, including the energy sector, and companies like us that operate in this sector have done so in a highly regulated context that aims mainly at guaranteeing the supply of domestic demand. To address the Argentine economic crisis in 2001 and 2002, the Argentine Government adopted the Public Emergency Law No. 25,561 (the “Public Emergency Law”) and other regulations, which made a number of material changes to the regulatory framework applicable to the electricity sector and tariffs on public services. Over the years, the energy sector was one of the sectors most affected by the economic policies that the Argentine Government adopted from the crisis of 2001 onwards. At that time, a freeze on natural gas and electricity rates was imposed, which disincentivized investments in the sector. The Argentine government tried to boost investment by subsidizing energy consumption, but these measures were ineffective and caused both oil and gas production and electricity generation, transmission and distribution to stagnate, while consumption continued to grow. The energy crisis led to a scarcity scenario. The National Government’s response was to increase energy imports, generating adverse consequences for the trade balance and the international reserves of the BCRA. These measures severely affected electricity generation, distribution and transmission companies. See “Item 4. The Argentine Energy Sector - Electricity Regulatory Framework”. Since taking office, and particularly during 2025, the current administration has pursued broad deregulation of the Argentine economy, including the electricity sector through measures such as the DNU No. 70/23, the Bases Law and SE Resolution No. 400/25. These measures seek to reduce restrictions on the supply of goods and services and to promote market-based pricing across various sectors of the economy. While certain of these reforms could benefit our business, many are recent and their full impact on the electricity sector remains uncertain. 30 Table of Contents Accordingly, we cannot assure you that such measures will correct problems in the generation, transportation and distribution of energy in Argentina. Similarly, we cannot assure you that certain other regulations or measures that may be adopted by the Argentine Government will not have a material adverse effect on our business and operational results or on the market value of our shares and ADSs or that the Argentine Government will not adopt further emergency legislation or other similar regulations in the future that may increase our obligations, including increased taxes, unfavorable alterations to our tariff structures or remuneration scheme and other regulatory obligations, compliance with which would increase our costs and may have a direct negative impact on our operational results and cause the market value of our ADSs and our common shares to decline. We could be adversely affected by limited electricity transmission and distribution capacity or sudden increases or decreases in energy demand in the short or medium term From 2002 to 2016, electricity demand in Argentina grew significantly, driven mainly by the relatively low cost, in real terms, of electricity for consumers due to subsidies from the Argentine Government. As a result, electricity demand grew faster than the structural expansion of electricity generation, transmission, and distribution capacities, which led, on certain occasions, to power shortages and disruptions, including blackouts in Buenos Aires and other cities across Argentina. Moreover, although certain investments were made in recent years particularly in electricity generation, the general condition of the Argentine electricity market provided little incentive to further invest in expanding generation, transmission, and distribution capacities, since such investments require material long-term financial commitments. In particular, the amount of energy that generators can deliver at any given time is directly constrained by the capacity of the transmission and distribution systems. The current administration has stated that one of its main goals is to reduce public expenditure through the application of a zero-deficit policy (see “The policies or measures adopted by the Argentine Government from time to time may adversely affect the Argentine economy and the sectors in which we operate”). This has resulted in cuts to electricity subsidies and, consequently, tariff increases (see “Item 4. The Argentine Energy Sector – Electricity Regulatory Framework”). Notwithstanding these developments, it is still necessary to make several investments in the transmission and distribution system to guarantee the delivery of electricity to users and reduce the frequency of interruptions. Although the current administration has recently enacted several measures intended to deregulate the energy sector and, in turn, attract new investments in the sector (see “Government intervention in the electricity sector may have an impact on our business operations, financial condition and/or results of operations”), such measures may not achieve their intended results. A sustained increase in electricity demand could give rise to future shortages. We cannot guarantee that we will not experience a lack of dispatch from our generation units due to transmission and distribution limitations, or that government interventions, measures, and regulations in the energy sector related to transmission and distribution will not adversely affect our business, our results of operations, and our financial condition and cause the market value of our ADSs and our common shares to decline. Our power generation plants may be subject to new regulations that require additional investments, or adversely affect their dispatch Certain regulations, particularly environmental (e.g. emissions limits, prohibitions to use certain consumables or materials, etc.) and public safety (e.g. public roads and railway crossings) regulations, may vary from time to time, which may require unplanned investments in our power plants to adapt to any new requirements. We cannot assure you that these measures or any future measures will not lead to our recording lower revenues and operational results as a result of the new investments or lack of availability or dispatch until such investments are made. Measures encouraging renewable and nuclear energy generation projects may affect our generation sales Law No. 27,191 was enacted on October 15, 2015, determining, among other things, that by December 31, 2025, 20% of the total domestic energy demand must be sourced from renewable energy sources. In order to meet such goal, the statute required wholesale users and CAMMESA to cover their respective portion of domestic energy demand with renewable sources of energy at 8% by December 31, 2017. The percentage of domestic energy demand required to be covered by renewable energy increases every two years, reaching 20% by 2025. The statute also includes tax and other benefits for new renewable energy projects. The 2025 deadline has now expired, creating uncertainty whether the tax incentives and other benefits for renewable energy projects will be extended, modified, or eliminated, any of which could affect the competitive dynamics of the generation market and our operational results. 31 Table of Contents Additionally, ME&M Resolution No. 281/17 regulated contracts for energy of renewable sources among WEM agents. Pursuant to Resolution No. 306/25, such regulatory authority was delegated to the Undersecretariat of Electricity. Such resolution allows GUMA and GUME to purchase their total energy demand from a generator of renewable sources that made an investment in generation (see “Item 4. Our Generation Business - Renewable Energy”). However, we cannot make any assurances that the implementation of this law and its regulation will not affect our generation sales, particularly sales under the Energy Plus regime, which, in turn, could adversely affect our operational results and financial condition. On December 20, 2024, President Javier Milei announced the “Argentine Nuclear Plan”, outlining a policy agenda that would construct new nuclear reactors across the country in a bid to fuel energy-intensive artificial intelligence projects. In 2025, the Government also publicly discussed attracting private investment into the nuclear sector, including through plans to partially privatize the state nuclear operator Nucleoeléctrica Argentina. An increase in nuclear energy production could potentially impact our generation sales. Our ability to generate electricity in our thermal generation plants depends on the availability and price of natural gas and other fuels, and any disruption to our fuel supply or the regulatory framework governing its procurement could materially adversely affect our operational results Several of our generation facilities are equipped to run solely on gas and, in the event that gas becomes unavailable, these facilities will not be able to switch to other types of fuel in order to continue generating electricity. The supply or price of gas used in our generation business has been and may from time to time continue to be affected by, among others, the availability of gas in Argentina, our ability to enter into contracts with local gas producers and gas transportation companies, and the need to import a larger amount of gas at a higher price than the price applicable to domestic supply in the event of a shortage in domestic production. In addition, our ability to procure fuel, manage fuel costs and operate our thermal plants depends in part on the regulatory framework applicable to fuel supply and dispatch in Argentina. In December 2023, through Decree No. 55/23, the Argentine Government declared an emergency with respect to electricity generation, transmission and distribution, as well as natural gas transportation and distribution, until December 31, 2024. That emergency was later extended by Decree No. 370/25 until July 9, 2026 and, with respect to natural gas transportation and distribution, by Decree No. 49/26 until December 31, 2027. Against this backdrop, the rules applicable to fuel supply and dispatch for thermal generators have continued to evolve. The dispatch scheme established by Plan Gas.Ar that divided the dispatch of thermal generators into five categories according to the source of the natural gas supply was recently abrogated. According to SE Resolution No. 21/25, power generators may, as of March 1, 2025, supply their own fuels and their dispatch will be conditioned on their “Variable Production Cost” (“Costo Variable de Producción” or “CVP”). As a result, our dispatch may be affected by, and will depend in part on, whether our CVP remains competitive. Following SE Resolution No. 400/25, which introduced new rules for the normalization of the WEM and No. 501/25, the supply of fuel for generators was decentralized from CAMMESA to each generator. CAMMESA remains the supplier of last resort. SE Resolution No. 400/25 includes a gradual transition toward decentralized fuel management. Under this framework, generators will progressively assume responsibility for procuring natural gas and alternative fuels, with full mandatory self-management starting January 1, 2029. During the transition period, generators may either access natural gas through CAMMESA under the “GN Agreement” or procure their own supply; but cost recovery will depend on their declared CVP and competitive dispatch. Generators that fail to manage their own fuel will face restrictions, such as exclusion from the Term Market and reduced remuneration, which could reduce dispatch opportunities and associated revenues. Additionally, SE Resolution No. 501/25 allows natural gas producers and electricity generators to agree on their natural gas supply by taking on the volumes committed under the Plan Gas.Ar contracts between producers and CAMMESA. Such volumes shall be treated as generators’ own gas and remunerated according to the declared CVP for dispatch, as well as for the determination of the generator’s income. Moreover, WEM supply agreements under SEE Resolution No. 287/17 also require that the generator cover its fuel supply. If we cannot guarantee our fuel supply, penalties under such supply agreements may apply, which, together with any resulting lower production of the relevant generation units, could adversely affect our operational results. See “Item 4. The Argentine Energy Sector – Electricity Regulatory Framework”. 32 Table of Contents These changes may require significant operational and contractual adaptations and could expose us to market risks and price volatility once centralized procurement ends. If we are unable to purchase gas at prices that are favorable to us, if the supply of gas is reduced or if CAMMESA does not provide gas to our generation facilities, our costs could increase or our ability to profitably operate our generation facilities could be impaired. Any disruption or inability to acquire the necessary fuels for our generation business could, in turn, materially adversely affect our operational results and financial condition and the market value of our ADSs. We may be subject to penalties under our energy supply agreements with CAMMESA and/or WEM Large Users We have executed several energy supply agreements with CAMMESA under which a breach of our commitments may adversely affect the revenues derived from such agreements, including: (i) a breach of the availability commitments set forth in our WEM supply agreements under SE Resolution No. 220/07, SEE Resolution No. 21/16, SEE Resolution No. 287/17 and SE Resolution No. 59/23 allows CAMMESA to apply penalties to us that may adversely impact the revenues derived from such agreements, which in turn may adversely affect our results or reduce the capacity payments under the relevant PPA; and (ii) a breach of the energy delivery commitments set forth in PEA’s PPA allows CAMMESA to apply penalties that may adversely impact the revenues derived from such agreements and, ultimately, result in an obligation to sell the assets involved in the operation of the wind farm, which in turn may adversely affect our results. See “Item 4. Our Generation Business - Renewable Energy” and “Electricity Regulatory Framework”. Moreover, in the agreements with WEM Large Users, a breach of certain conditions may cause the early termination of such agreements or the application of penalties if: (i) the generator loses its authorization to act as a generator in the WEM, initiates bankruptcy proceedings, suffers judicial intervention, or certain other events occur, which could adversely affect our operational results; or (ii) the generator does not meet the energy committed under the DoP set forth in the agreements. Any early termination or other penalties that could be applied may adversely affect the revenues derived from such agreements and our generation units. We may be subject to sanctions for breaches of applicable regulations or for failing to obtain the required permits and authorizations for our operating or new power generation units Our generation units are subject to extensive regulation by local, provincial and national authorities. A breach of such regulations or the impossibility or delay to obtain and keep the relevant permits and authorizations may result in sanctions, including fines, which could affect our operational results if they were to be imposed. Also, our expansion projects require several permits and authorizations to be obtained at scheduled dates to accomplish entry into commercial operations at the estimated dates. We have experienced several delays from relevant authorities in the issuance of such permits and authorizations and could face such delays in the future. We cannot assure you that, even if fulfilling any and all legal requirements, relevant permits would be granted as scheduled. This could mean delays of the entry into commercial operations of new projects that, in turn, may result in sanctions, penalties, loss of dispatch priorities, loss of sales and increased costs and payments, which would affect our operational results and adversely affect the availability and revenues derived from our generation units. Likewise, we cannot assure you that new environmental protective regulation would not prevent us from obtaining the relevant permits and authorizations for the development of new projects. Revenues from our renewable generation assets depend on meteorological and hydrological conditions, as well as on our ability to contract the energy produced and maintain the applicable dispatch priorities The electricity generation from our renewable assets, including our wind farms and hydroelectric plants, depends on prevailing meteorological and hydrological conditions, which are inherently variable and beyond our control. Lower-than-expected wind speeds may reduce electricity generation at our wind farms and could result in breaches of our sales commitments with CAMMESA, in the case of PEA, and with WEM Large Users, in the case of PEPE II, PEPE III, PEPE IV and PEPE VI. Such breaches could lead to the imposition of penalties payable to our customers, which vary depending on the contractual arrangements applicable to each project, and could adversely affect our revenues and results of operations. Additionally, severe meteorological events may cause outages, curtailed operations, or damage to our power generation assets requiring extensive remediation measures and work. See “Natural disasters, pandemics, catastrophic events, terrorist attacks and operational failures could disrupt our assets and impair our ability to fulfill contractual commitments”. 33 Table of Contents In addition, the ability of PEPE II, PEPE III, PEPE IV and PEPE VI to fully monetize their estimated energy generation depends on their ability to contract such generation with WEM Large Users and on each project maintaining its applicable priority dispatch. If a project were to lose its priority dispatch, or if it were otherwise unable to contract its energy generation with WEM Large Users, the uncontracted energy would be sold under the spot market remuneration scheme, which may result in lower prices. Our ability to contract the energy generated by these projects may also be adversely affected by regulatory measures adopted by CAMMESA or other relevant authorities. For example, measures affecting the ability of WEM Large Users to comply with their renewable energy purchase obligations through the “Group Purchase Mechanism” (Mecanismo de Compra Conjunta) could reduce demand for renewable energy from MATER projects and negatively affect our operational results. Similarly, the operations of our hydroelectric generation plants (HINISA, HIDISA and HPPL) are dependent on hydrological conditions, which we cannot fully predict. Since 2006, the year in which our hydroelectric facilities recorded their highest water intake levels, hydrological conditions have been generally unfavorable, with particularly adverse conditions recorded in 2014, when water intake at HINISA and HIDISA was 62% and 64% lower, respectively, than in 2006. A prolonged period of poor hydrological conditions could reduce electricity generation at our hydroelectric plants and, in the event of electricity shortages, could lead the Argentine government to implement electricity conservation measures, mandate reductions in electricity generation or consumption, or prioritize electricity generation from thermal plants that use fossil fuels in order to preserve water resources for future use. While such measures could benefit our thermal generation assets, they would negatively affect our hydroelectric operations. Moreover, if water levels at the dams of our hydroelectric facilities were to decrease to the minimum thresholds established under the applicable concession agreements, the relevant local water authorities, including the Province of Mendoza and the Interjurisdictional Authority (Autoridad Interjurisdiccional de Cuenca or “AIC”), would assume control over the amount of water that may be dispatched in order to ensure the continuity of other priority uses, such as human consumption and irrigation. Any of the foregoing factors could reduce revenues in our generation business and have a material adverse effect on our financial condition, results of operations and the market value of our shares and ADSs. Operational difficulties could limit our ability to generate electricity, which could adversely affect our operational results We may experience operational difficulties that could require us to temporarily suspend operations or otherwise affect our ability to generate electricity and, as a result, adversely impact our operating results. These difficulties may affect our generation equipment, electromechanical components or, in general, any of our assets required for the supply of electricity. We cannot make any assurances that events of such nature will not occur in the future. While we maintain comprehensive insurance for each of our facilities, we cannot make any assurances that the amounts for which we are insured or the amounts that we may receive under such insurance policies would cover all of our losses. If operational difficulties prevent our electricity generation, the disruption may lead to reduced revenues from our generation business, which would have an adverse effect on our operational results and may negatively affect the market value of our shares or ADSs. 34 Table of Contents We may face extra costs due to the termination of the concession agreements for HINISA, HIDISA and/or HPPL The initial concession agreements for HINISA and HIDISA terminated on June 1 and October 19, 2024, respectively. Since those dates, we have operated the facilities under a one-year extension provided for in each concession agreement. With respect to HINISA, in May 2025, the Province of Mendoza enacted Law No. 9,630, which declared an emergency for HINISA for a 14-month term due to the flood that occurred in January 2025, thereby extending the one-year period provided in the concession agreement. The Province of Mendoza incorporated a new corporation called “Hidroelectricidad Mendocina” that will become the future owner of the Nihuiles assets upon the termination of the concession and its extensions and the reversion of the assets. With respect to HIDISA, Law No. 9,630 authorized the continued use of water while the National Government, pursuant to SE Resolution No. 398/25, proposed the continuation of HIDISA’s operation until June 30, 2026. HIDISA adhered to such an extension. In March 2025, the Province of Mendoza and the National Government agreed to jointly call for a tender for the operation of both hydroelectric assets. As of the date of this report, the tender has not been launched. In the case of HPPL, the concession is expected to expire in the year 2029. We cannot assure that, upon expiration of the concession, we will be able to renew such concession. In all three cases, we expect to incur additional costs and investments in connection with the reversion of the assets, which may adversely affect our operational results. We could be exposed to third-party claims on real property where CPB is located that could result in the imposition of significant damages, for which we have not established a provision in our consolidated financial statements for potential losses At the time of CPB’s privatization in 1997, the Province of Buenos Aires agreed to expropriate and transfer to CPB the real property on which the plant was built and to create administrative easements in our favor over the third-party lands through which a gas pipeline and an electricity transmission line run. Although the Province of Buenos Aires is in the process of expropriating the property on which the plant is built, as of the date of this annual report, it had not transferred all of the real property with clear and marketable title to us. In addition, the Province of Buenos Aires has not created administrative easements for CPB’s gas pipeline or the electricity transmission line. In July 2008, we sued the Province of Buenos Aires seeking the creation of the administrative easements in our favor. We have received several complaints from third parties seeking compensation for the use of this land. If the Province does not complete the expropriation process or the administrative easement process, we may be exposed to judicial claims by third parties seeking compensation or damages for which we have not established a provision in our consolidated financial statements. If we were required to pay material damages or compensation for the right to use this real property as a result of adverse outcomes from legal proceedings, we could be required to use cash from operations to cover such costs, which could have a materially adverse effect on our financial condition and consolidated operational results and cause the market value of our ADSs to decline. This risk extends to our thermal generation plant CTIW which is constructed on CPB’s real property. The national antitrust authorities could decide not to approve the acquisition of the CTEB In 2019, Pampa and YPF were jointly awarded the National and International Public Bid No. CTEB 02/2019, which was launched through SGE Resolution No. 160/19, regarding the sale and transfer by IEASA (now ENARSA) of the goodwill of the CTEB (the “CTB Transaction”). The transaction closed on June 26, 2019. As of the date of this annual report, the CTB Transaction has not been approved by the national antitrust authorities. In the event that the CTB Transaction is not approved, the business, the financial situation and the results of the operations of the Company could be substantially and adversely affected. Further, the Company could even be forced to reverse and unwind such transactions and undo all their effects. 35 Table of Contents Our profits may be affected by the cancellation of the Energy Plus Program The enactment of SE Resolution No. 21/25 established a deadline for the execution of new contracts or the renewal of supply agreements under Energy Plus Contracts. Since November 2025, we have been unable to execute new energy supply contracts under such program and, consequently, if we cannot allocate such energy under new supply contracts within the new regulatory scheme, our revenues could be affected. See “Item 4. The Argentine Energy Sector - Electricity Regulatory Framework”. Our energy projects may not perform as expected Our energy projects and other operating assets may not continue to perform as they have in the past and there is a risk of equipment failure due to wear and tear, latent defect, design error, operator error, extreme weather events or early obsolescence, among other things, which could have an adverse effect on our assets, liabilities, business, financial condition, results of operations and cash flow. Equipment failure at our assets could also result in significant personal injury or loss of life, damage to and destruction of property, plant and equipment and contamination of, or damage to, the environment and suspension of operations. This could be on a large scale, such as the failure of a wind turbine or on a small scale, such as equipment catching on fire. The occurrence of any one of these events may result in our being named as a defendant in lawsuits asserting claims for substantial damages, including for environmental cleanup costs, personal injury and property damage and fines and/or penalties as well as reputational harm. In addition, certain defects may be detected on the wind turbines used in our energy projects, that could potentially affect their effectiveness and generation capacity and, in turn may affect the operations of our wind farms. These defects could eventually affect our wind farm operations and have an adverse effect in the compliance of their energy supply agreements and, ultimately, on the business, our financial condition, operational results or our ability to pay our debts. While our projects meet rigorous quality standards, there can be no assurance that such projects will not experience operational process or product failures and other problems, including as a result of outdated technology, or through manufacturing or design defects, process or other failures of contractors or third-party suppliers, cyber-attacks or other intentional acts that could result in potential product, safety, regulatory or environmental risks. We may face competition in the electricity sector and related industries Numerous strong and capable participants characterize the power generation markets in which we operate, many of which may have extensive and diversified developmental or operating experience and financial resources similar to or significantly greater than ours. The recent enactment of SE Resolution No. 400/25 is expected to increase competition in the generation segment. See “Item 4. The Argentine Energy Sector - Electricity Regulatory Framework”. The effects of such new regulatory scheme and any future amendments could cause reductions in prices and increase acquisition prices for fuel, raw materials and existing assets and, therefore, adversely affect our results of operations and financial condition. Our ability to compete effectively is further constrained by infrastructure limitations, We, and our competitors, are connected to the same electrical grid that has limited capacity for transportation, which, under certain circumstances, may reach its capacity limits. Therefore, new generators may connect, or existing generators may increase, their outputs and dispatch more electric power to the same grid that would prevent us from delivering our energy to our customers. In addition, the Argentine Government might not make the necessary investments to increase the system’s capacity. In fact, the Argentine Government has recently enacted legislation to promote private funding of transmission investments, granting reserved transmission capacity to funding parties, which could place us at a competitive disadvantage. Moreover, under the current regulatory framework, renewable energy contracts entered into by Large Users of the WEM through the MATER mechanism benefit from a reduction in the cost of capacity purchases in the spot market, as renewable energy contracts do not provide capacity backup. In contrast, thermal energy contracts do not have such benefit. As a result of this differential regulatory framework, our profitability and the competitiveness of our thermal generation assets participating in the contract market could be adversely affected. As a result, an increase in competition could affect our operations, which would adversely affect our results of operations and financial condition. Risks arise for our business from technological changes in the energy market The energy market is subject to far-reaching technological change, both on the generation and demand sides. With respect to energy generation, examples include the development of energy storage devices (battery storage in the megawatt range) or facilities for the temporary storage of power through conversion to gas (so-called “power-to-gas-technology”), the increase in energy supply due to new technological applications such as fracking or the digitalization of generation and distribution networks. New technologies to increase energy efficiency and improve heat insulation, for the direct generation of power at the consumer level, or that will enhance refeeding (for example, by using power storage for renewable generation) may, on the demand side, lead to structural market changes in favor of energy sources with low or zero carbon dioxide emissions or in favor of decentralized power generation, (for instance, via small-scale power plants within or close to residential areas or industrial facilities). 36 Table of Contents If our business cannot react to changes caused by new technological developments and the associated changes in market structure, these changes may have an adverse effect on our operational results. Our suppliers may not be able to provide spare parts and/or upgrades to our generation units We cannot assure you that the manufacturers of our generation units and their suppliers will provide in a timely manner the spare parts and/or upgrades required for the maintenance of such equipment. Consequently, in case of outage of a unit, the term for its entry into service shall be longer than expected or alternative solutions would be required. Such situations might affect our operations and have an adverse effect in the compliance of the relevant energy supply agreement and, ultimately, on the business, our financial condition, operational results or our ability to pay our debts. Our PPAs may not be renewed, or they could be unilaterally modified, terminated or otherwise affected by measures adopted by the Argentine Government related to the PPAs or the energy sector in general, or we may not be able to enter into new PPAs We have executed several energy supply agreements with CAMMESA under SE Resolution No. 220/07, SEE Resolution No. 21/16, SEE Resolution 287/17 and RenovAr Programs. Such PPAs could be revoked, modified or in any other way affected by any measure adopted by the Argentine Government. See “Item 4. The Argentine Energy Sector - Electricity Regulatory Framework”. Also, we could not be able to renew our PPAs or enter into new PPAs. We cannot assure you that we will be in a position to renew our PPAs or execute new PPAs under the same economic conditions, or that such PPAs will not be unilaterally modified or resolved or that certain other regulations or measures that may be adopted by the Argentine Government in connection with the electricity regulatory framework will not have a material adverse effect on our business, operational results and financial condition. The generation activity involves the handling of dangerous elements such as fuels that have an associated potential risk for premises and people Although we comply with all standards and best practices related to environmental safety, an accident involving materials with which we operate could have environmental consequences and cause harm to people and/or damage our or third-party facilities. This could in turn result in the unavailability of our equipment and, consequently, could affect our financial condition and our operational results. Risks Related to our Shares and ADSs Restrictions on the movement of capital out of Argentina may impair the ability of holders of ADSs to receive dividends and distributions and the proceeds of any sale of the shares underlying the ADSs, which could affect the market value of the ADSs Previous national administrations have established restrictions on the conversion of Argentine currency into foreign currencies and on the remittance to foreign investors of proceeds from their investments in Argentina. Conversion of dividends, distributions, or the proceeds from any sale of shares from Pesos into U.S. Dollars, as well as the transfer of those funds abroad, is limited (see “Item 10. Additional Information - Exchange Controls”). Future restrictions on the movement of capital to and from Argentina such as those that previously existed could, if reinstated, impair or prevent the conversion of dividends, distributions, or the proceeds from any sale of shares, as the case may be, from Pesos into U.S. Dollars and the remittance of such U.S. Dollars abroad. Also, certain of our indebtedness includes covenants limiting the payment of dividends. The current administration has reiterated its commitment to abolish all currency restrictions however, as of the date of this report, many such restrictions remain in place. We cannot assure you that the remaining restrictions will be lifted or that additional restrictions will not be imposed in the future. In such a case, the depositary for the ADSs may hold the Pesos it cannot otherwise convert for the account of the ADS holders who have not been paid. In addition, any future adoption by the Argentine Government of restrictions on the movement of capital out of Argentina may affect the ability of our foreign shareholders and holders of ADSs to obtain the full value of their shares and ADSs and may adversely affect the market value of our shares and ADSs. 37 Table of Contents ADS holders’ ability to receive cash dividends may be limited Our shareholders’ ability to receive cash dividends may be limited by the ability of the depositary to convert cash dividends paid in Pesos into U.S. Dollars. Under the terms of our deposit agreement with the depositary for the ADSs, the depositary will convert any cash dividend or other cash distribution we pay on the common shares underlying the ADSs into U.S. Dollars, if it can do so on a reasonable basis and can transfer the U.S. Dollars to the United States. If this conversion is not possible or if any government approval is needed and cannot be obtained, the deposit agreement allows the depositary to distribute the foreign currency only to those ADS holders to whom it is possible to do so. If the exchange rate fluctuates significantly during a time when the depositary cannot convert the foreign currency, shareholders may lose some or all of the value of the dividend distribution. Under Argentine law, shareholder rights may be fewer or less well-defined than in other jurisdictions Our corporate affairs are governed by our bylaws and by LGS, which differ from the legal principles that would apply if we were incorporated in a jurisdiction in the United States, such as the States of Delaware or New York, or in other jurisdictions outside Argentina. In addition, the rights of holders of the ADSs or the rights of holders of our common shares under LGS to protect their interests relative to actions by our board of directors may be fewer and less well-defined than those under the laws of those other jurisdictions. Although insider trading and price manipulation are illegal under Argentine law, the Argentine securities markets are not as highly regulated or supervised as the U.S. securities markets or markets in some other jurisdictions. In addition, rules and policies against self-dealing and regarding the preservation of shareholder interests may be less well-defined and enforced in Argentina than in the United States, putting holders of our common shares and ADSs at a potential disadvantage. Holders of ADSs may be unable to exercise voting rights with respect to the common shares underlying the ADSs at our shareholders’ meetings Shares underlying the ADSs are held by the depositary in the name of the holder of the ADS. As such, we will not treat holders of ADSs as one of our shareholders and, therefore, holders of ADSs will not have shareholder rights. The depositary will be the holder of the shares underlying the ADSs and holders may exercise voting rights with respect to the shares represented by the ADSs only in accordance with the deposit agreement relating to the ADSs. There are no provisions under Argentine law or under our bylaws that limit the exercise by ADS holders of their voting rights through the depositary with respect to the underlying shares. However, there are practical limitations on the ability of ADS holders to exercise their voting rights due to the additional procedural steps involved in communicating with these holders. For example, holders of our shares will receive notice of shareholders’ meetings through publication of a notice in the Official Gazette, an Argentine newspaper of general circulation and the daily bulletin of the BASE and will be able to exercise their voting rights by either attending the meeting in person or voting by proxy. ADS holders, by comparison, do not receive notice directly from us. Instead, in accordance with the deposit agreement, we provide the notice to the depositary. If we ask it to do so, the depositary will mail to holders of ADSs the notice of the meeting and a statement as to the manner in which instructions may be given by holders. To exercise their voting rights, ADS holders must then instruct the depositary as to voting the shares represented by their ADSs. Due to these procedural steps involving the depositary, the process for exercising voting rights may take longer for ADS holders than for holders of shares, and shares represented by ADSs may not be voted as the holders of ADSs desire. Shares represented by ADSs for which the depositary fails to receive timely voting instructions may, if requested by us, be voted at the corresponding meeting either in favor of the proposal of the board of directors or, in the absence of such a proposal, in accordance with the majority. Our shareholders may be subject to liability for certain votes of their securities Because we are a limited liability corporation, our shareholders are not liable for our obligations. Shareholders are generally liable only for the payment of the shares they subscribe. However, shareholders who have a conflict of interest with us and who do not abstain from voting at the respective shareholders’ meeting may be liable for damages to us, but only if the transaction would not have been approved without such shareholders’ votes. Furthermore, shareholders who willfully or negligently vote in favor of a resolution that is subsequently declared void by a court as contrary to the law or our bylaws may be held jointly and severally liable for damages to us or to other third parties, including other shareholders. 38 Table of Contents Provisions of our bylaws and of Argentine securities laws could deter takeover attempts and have an adverse impact on the price of our shares and the ADSs Our bylaws and Argentine securities laws contain provisions that may discourage, delay or impair a change of control of our Company, such as the requirement, upon the acquisition of a controlling interest in our capital stock, to launch a mandatory tender offer to acquire all our voting stock and any securities convertible into, or entitling the holder thereof to subscribe for or acquire, any voting shares in our capital stock. These provisions may delay, defer or prevent a transaction or a change of control that might otherwise be in the best interest of our shareholders and may adversely affect the market value of our shares and ADSs. In addition, the provisions of our bylaws and of Argentine securities laws with respect to the obligation to launch a mandatory tender offer differ in certain respects; as of the date of filing of this annual report, it is unclear whether the provisions of our bylaws, which might be more beneficial to minority shareholders under certain circumstances than the provisions of Argentine securities laws in effect as of the date hereof, would prevail over the provisions of Argentine securities laws. There can be no assurance that we will not be a passive foreign investment company, or PFIC, for U.S. federal income tax purposes for any taxable year, which could subject U.S. holders of our shares or ADSs to adverse U.S. federal income tax consequences A non-U.S. corporation will be a passive foreign investment company (“PFIC”) if, in any particular year, either (i) 75% or more of its gross income for such year consists of certain types of “passive” income or (ii) 50% or more of the value of its assets (generally determined on the basis of a quarterly average) is attributable to assets that produce or are held for the production of passive income. Based on our Consolidated Financial Statements and relevant market and shareholder data, we believe that we were not a PFIC for U.S. federal income tax purposes in 2025. In addition, based on our current expectations regarding the value and nature of our assets, the sources and nature of our income, and relevant market and shareholder data, we do not expect to become a PFIC in 2026 or in future taxable years. However, because the PFIC tests must be applied each year, and the composition of our income and assets and the value of our assets may change, it is possible that we may be a PFIC in the current or a future year. In particular, because the value of our assets may be determined for purposes of these tests by reference to the market price of our common shares or ADSs, fluctuations in the market price of our common shares or ADSs may cause us to become a PFIC. If we are a PFIC in any taxable year, during which a U.S. holder (as defined in “Taxation - United States Federal Income Tax Considerations”) holds our shares or ADSs, certain materially adverse U.S. federal income tax consequences could apply to such U.S. holder. See “Item 10. Additional Information – Taxation - United States Federal Income Tax Considerations - Passive Foreign Investment Company Rules”. U.S. holders should consult their own tax advisor regarding the potential application of the PFIC rules to an investment in our shares or ADSs. For more information, see “Item 10. Additional Information – Taxation - United States Federal Income Tax Considerations - Passive Foreign Investment Company Rules”. 39 Table of Contents
HISTORY AND DEVELOPMENT OF THE COMPANY Pampa is incorporated as a sociedad anónima under the laws of Argentina. Our principal executive offices are located at Maipú 1, City of Buenos Aires, Argentina (C1084ABA). Our telephone number is + 54 11 4344 6000. Our website address is w…
HISTORY AND DEVELOPMENT OF THE COMPANY Pampa is incorporated as a sociedad anónima under the laws of Argentina. Our principal executive offices are located at Maipú 1, City of Buenos Aires, Argentina (C1084ABA). Our telephone number is + 54 11 4344 6000. Our website address is www.pampa.com. None of the information available on our website or elsewhere is included or incorporated by reference into this annual report. Our authorized representative in the United States for our registration statement with the SEC is Puglisi Associates, located at 850 Library Avenue, Suite 204, Newark, Delaware 19711. We were incorporated on January 12, 1945 and registered before the Public Registry on February 21, 1945 for a duration lasting until June 30, 2044, under the name Frigorífico La Pampa S.A. In 2003, we suspended our former business activities, which were limited to the ownership and operation of a cold storage warehouse building. In 2005, the Company was acquired by its current principal shareholders to serve as a corporate vehicle for its investments in Argentina. Following such acquisition, we changed our corporate name to Pampa Holding S.A. We changed our corporate name again, to Pampa Energía S.A, in September 2008 and have operated under this name since then. As a result of several acquisitions made since 2006, we are currently one of the leading independent energy integrated companies in Argentina and, directly and/or through our subsidiaries and joint controlled companies, we participate in the electricity and gas value chains. In July 2016, we acquired from Petrobras all of the shares of Petrobras Participaciones S.L., which in turn owned, at such time, 67.2% of the shares of Petrobras Argentina (the “Acquisition”). Since the Acquisition, we started a corporate reorganization process and have merged certain subsidiaries into Pampa, including, among others, Petrobras Argentina, Petrolera Pampa, CTG, CTLL, CPB and certain assets of CISA by way of absorption, with Pampa as the surviving company. The SEC maintains an internet site (http://www.sec.gov) that contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC. Capital Expenditures and Divestitures For a description of our capital expenditures, see “Item 5. Operating and Financial Review and Prospects - Liquidity and Capital Resources.” 40 Table of Contents OUR BUSINESS Overview We are one of Argentina’s largest energy companies, participating mainly in the crude oil, gas and power generation value chain: Note: As of December 31, 2025. Numbers are rounded, so they may not sum up. CTEB, Transener and TGS are affiliates, which under IFRS are not consolidated in the financial statements. 1) Average 2025 production. 2) It includes 1.1 kbbl of crude oil produced in El Tordillo and La Tapera-Puesto Quiroga, assigned in October 2025. 3) It includes 848 MW at CTEB, co-operated by Pampa. Oil and Gas. We are engaged in the oil and gas business through the exploration and exploitation of direct interests in blocks located in Argentina, with operations in 9 production blocks, 2 exploratory blocks and 470 productive wells. The Company is the fifth-largest gas producer with 9% of the country’s gas output and the third-largest shale gas producer with 10% market share. The segment includes our 20% equity interest in SESA and San Matías Pipeline S.A., both of which are engaged in the development of the FLNG Project (see “Recent Events – FLNG Project”). · As of December 31, 2025, our combined crude oil and natural gas proved reserves amounted to approximately 296 million boe, 54% of which were proved developed reserves. Natural gas accounted for approximately 81% of our combined proved reserves and liquid hydrocarbons for 19%; and · As of December 31, 2025, our combined oil and gas production in Argentina averaged 84.4 thousand boe per day. Crude oil accounted for approximately 11.7 thousand boe per day, while natural gas accounted for approximately 72.8 thousand boe per day. During 2025, 60% of our production came from Vaca Muerta formation, reaching 63% during the last quarter of 2025, consolidating our position as one of the main producers in the most relevant formation of Argentina. Our oil and gas business segment recorded U.S.$ 862 million in revenue and an operating profit of U.S.$ 91 million for the fiscal year ended December 31, 2025. For more information about our Oil and Gas Business, please see “Item 4. Our Oil and Gas Business.” Generation. Our generation installed capacity reached 5,472 MW as of December 31, 2025, representing approximately 12% of Argentina’s installed capacity. Our generation business segment recorded U.S.$ 792 million in revenue and an operating profit of U.S.$ 375 million for the fiscal year ended December 31, 2025. For more information about our Generation Business, please see “Item 4. Our Generation Business.” Petrochemicals. We are engaged in the petrochemicals business through two plants located in Argentina which produce styrene, styrene butadiene rubber and polystyrene, with a domestic market share of 86% and 98% (per Company estimates), respectively, as of December 31, 2025. Our petrochemicals business segment recorded U.S.$ 443 million in revenue and an operating loss of U.S.$ 31 million for the fiscal year ended December 31, 2025. 41 Table of Contents For more information about our Petrochemicals Business, please see “Item 4. Our Petrochemicals Business.” Holding and Other Business. We also hold other interests, including: · a 26.9% co-controlling interest in TGS, the country’s largest gas transportation company, owning and operating 9,248 km of gas pipelines, a natural gas liquids processing plant, General Cerri, with a production capacity of over 1 million tons/year, and a gathering pipeline and gas treatment plant located in Vaca Muerta, province of Neuquén, which provides unregulated midstream services; · a 26.3% co-controlling interest in Transener, Argentina’s leading high-voltage electric energy transmission company. Additionally, Transener holds a 100% interest in Transba. As of December 31, 2025, Transener’s operation and maintenance coverage reached approximately 22.4 thousand kilometers of high voltage transmission lines, representing approximately 86% of the high-voltage system in Argentina; · a 70% interest in Enecor S.A., an independent electricity transmission company that provides operation and maintenance services, by subcontracting Transener, for 21 km of 132 kV double-triad electricity lines, from the Paso de la Patria transforming station, in the Province of Corrientes. Such services are provided under a 95-year concession, which is due to expire in 2088; and · a 10.2% interest in VMOS related to the “Vaca Muerta Oil Sur Project” for the construction, development, and operation of an oil pipeline approximately 437 km in length, from Allen to Punta Colorada, in the Province of Río Negro. Pampa will have transportation, storage, and dispatch capacity of 50,000 barrels per day. · a 2.1% interest in Oldelval, a company engaged in the operation of main oil pipelines that connect the Neuquina Basin to the Bahía Blanca harbor. Our holding and other business segment recorded U.S.$ 24 million in revenue and an operating profit of U.S.$ 68 million for the fiscal year ended December 31, 2025. For more information about our Holdings and Others Business, please see “Item 4. Our Holdings and Others Business.” Relevant Events Oil and Gas Vaca Muerta Oil Sur Project In June 2025, the shareholder structure of VMOS S.A. was expanded with the incorporation of Tecpetrol S.A. as a Class A shareholder. We currently hold a 10.2% stake in VMOS, which may vary depending on an increase in any of the shareholders’ participation or the entry of additional shareholders into the project. VMOS is currently developing a large-scale pipeline that will streamline crude oil evacuation and exports from the Vaca Muerta formation, and specifically, for us, from the Rincón de Aranda block, will reduce logistics costs, open new markets for Argentine oil, increase foreign currency inflows, create employment opportunities and expand our firm transportation capacity. FLNG Project On January 15, 2025, we acquired an interest in a floating liquefied natural gas project in Argentina, including the stationing of the floating liquefied gas vessel “Hilli Episeyo” (“Hilli”) and the construction of all the required additional facilities in the San Matías Gulf, in the Province of Río Negro (the “FLNG Project”), together with Pan American Energy S.L., Golar FLNG Holding Company Limited, YPF and Harbour Energy. The vessel is expected to start operating in September 2027. The FLNG Project is being executed through SESA, whose shareholders are Pan American Energy S.L. (30%), YPF S.A. (through its subsidiary Sur Inversiones Energéticas S.A.U.) (25%), Pampa (20%), Wintershall DEA Argentina S.A. (15%), and Golar FLNG Sub Holding Company Limited (10%). SESA’s application to adhere to the RIGI, in accordance with Law 27,442, Regulatory Decree No. 749/24, and other regulations that may amend and/or complement them, to be considered a Strategic Long-Term Export Project was approved on April 29, 2025. 42 Table of Contents On May 2, 2025, the consortium satisfied all conditions required to move forward with development of the FLNG Project, including the final investment decision for Hilli and the approval of its application for enrollment under the RIGI. A second vessel, the “MKII” was included in the project. Both units are expected to provide a combined processing and export capacity of approximately 6 million tons per year of LNG (equivalent to 27 million m³/day of natural gas). The FLNG Project represents an estimated investment of approximately U.S.$ 7 billion over its 20-year operational horizon and is expected to position Argentina as a participant in the global LNG market. Operations of the Hilli and the MKII are expected to begin in late 2027 and 2028, respectively. To supply natural gas to both vessels, SESA entered into 20-year natural gas supply agreements with Pampa, Pan American Energy, YPF and Wintershall, each in proportion to its equity interest in SESA. The project also contemplates the construction of a dedicated gas pipeline from the Province of Neuquén to the San Matías Gulf to ensure year-round operation of both vessels to be developed by the company San Matias Pipeline S.A., where we also hold a 20% interest. The FLNG Project is strategic to monetizing our Vaca Muerta reserves, placing Argentina within the liquefied natural gas global market, and boosting foreign currency inflows, job creation, and the domestic supply chain. Extension of the RIGI, inclusion of hydrocarbon upstream activities and filing of the RDA Project On February 19, 2026, pursuant to DNU No. 105/26, the deadline to join the RIGI was extended until July 8, 2027, and the exploration and production of liquid and gaseous hydrocarbons in greenfield blocks was incorporated into the regime. These activities may only be included in new projects, as well as the construction of associated treatment, storage, and transportation infrastructure. In addition, a minimum investment amount was set at U.S.$ 600 million for onshore developments and U.S.$ 200 million for offshore projects. In cases where activities not subject to the RIGI coexist within the same hydrocarbon block, strict asset and corporate segregation must be ensured. Additionally, the traceability of RIGI production must be guaranteed through separate measurement systems and via a dedicated vehicle that exclusively holds the relevant assets, rights, and operations. Following such inclusion, on March 9, 2026, we (through our single-purpose project vehicle Pampa Energía S.A. - Sucursal Dedicada Proyecto RDA) submitted an application to adhere to the RIGI as a long-term strategic export project in connection with the exploration, drilling, completion, production, and development of new shale oil wells located in the Rincón de Aranda block, as well as the construction of related infrastructure, including processing facilities, oil pipelines, and gas pipelines (the “RDA Project”). The RDA Project contemplates the drilling and development of approximately 259 new wells, of which 154 are expected to be drilled in the southern portion and 105 in the northern portion of the block. Pursuant to DNU No. 105/26, the 54 wells currently operated by Pampa in the block are excluded from the scope of the RIGI application. Accordingly, only new wells drilled following the submission of the application are included. It should be noted that, prior to the enactment of DNU No. 105/26, the RDA Project contemplated the development of approximately 50% of the total surface of the Rincón de Aranda block, considering the reservoir quality and the associated geological complexity. The enactment of DNU No. 105/26 made it feasible to extend the development to the northern portion of the Rincón de Aranda block, allowing the development of 105 additional wells in such block. The total estimated investment for the RDA Project is approximately U.S.$ 4.5 billion. Sale of El Tordillo, La Tapera y Puesto Quiroga. On October 1, 2025, the Company transferred to Crown Point Energía S.A., in relation with the El Tordillo, La Tapera and Puesto Quiroga blocks: (i) its 35.6706% participation in the hydrocarbon exploitation concessions and hydrocarbon transportation concessions, and (ii) the Joint Venture Agreements for the exploration, exploitation and development of hydrocarbons. The amount of the transaction was U.S.$ 2 million. 43 Table of Contents Generation Hydroelectric concessions termination On June 4, 2024, we announced the beginning of a 12-month transition period for the concession held by HINISA, in which we hold a 52.04% stake. On June 11, 2024, we announced that the transition period was modified and reduced to 6 months. HINISA’s concessions, granted by the Province of Mendoza and the National Government for the use of water resources and electric power generation, were originally set to expire on June 1, 2024. The Province of Mendoza, through Decree No. 1,021 issued on May 27, 2024, and the National Energy Secretariat, via Resolution RESOL-2024-83-APN-SE#MEC and RESOL-2024-98-APN-SIYC#MEC, have both established a twelve-month transition period effective from June 1, 2024, during which HINISA will continue to manage the hydroelectric complex, with designated observers from the provincial government. The concessions for HINISA expired on November 30, 2024. On November 29, 2024, the SE extended the transition period for 6 months. The new expiration date is June 1, 2025. In the case of HIDISA, its concession expired on October 19, 2024. These concessions include one granted by the Province of Mendoza for the use of water assets and resources and another granted by the Argentine Federal Government for electricity generation. We hold 61% of HIDISA’s share capital. On October 18, 2024, the Province of Mendoza, through Decree No. 2,096/24, established a 12-month transition period, with the provincial Undersecretary of Energy and Mining appointed as supervisor. Similarly, the Secretariat for the Coordination of Energy and Mining of Argentina, through Resolution No. 1/24, established a transition period until June 1, 2025, and designated the national Subsecretariat of Electric Energy as the supervising authority. With respect to HINISA, the Province of Mendoza enacted Law No. 9,630 which was promulgated in May 2025 declaring an emergency for HINISA’s operation for a 14-month term from such promulgation due to the flood that occurred in January 2025, thereby extending the 12-month transition period provided in the concession agreement. The Province of Mendoza established a new corporation “Hidroelectricidad Mendocina” to become the future owner of the Nihuiles assets upon reversion. With respect to HIDISA, Law No. 9,630 authorized the continued use of water, while the National Government, pursuant to SE Resolution No. 398/25, proposed the continuation of HIDISA’s operation until June 30, 2026. HIDISA adhered to such an extension. In March 2025, the Province of Mendoza and the National Government agreed to jointly call for a tender for the operation of both hydroelectric assets. As of the date of this report, the tender has not been launched. Changes in the electricity regulatory framework In order to achieve the objectives set out in the Bases Law, in July 2025 Decree No. 450/25 was enacted amending Law No. 15,336 and approving a consolidated text of Law No. 24,065. In line with this, based on the guidelines for the readaptation of the WEM, on October 21, 2025, SE Resolution No. 400/25 approved the Rules for the Normalization and Progressive Adaptation of the WEM. For more information on such changes, see “Item 4. The Argentine Energy Sector - Electricity Regulatory Framework.” 44 Table of Contents Organizational structure The following chart sets forth our corporate structure as of December 31, 2025. See “Exhibit 8.1. List of subsidiaries, Joint Ventures and Associates of Pampa Energía S.A.” We have no significant subsidiaries. 45 Table of Contents Our Oil and Gas Business Exploration and Production Our strategy is to develop profitable oil and gas reserves with social and environmental responsibility. In this segment, we are focused on three main objectives: (i) development and monetization of unconventional gas reserves; (ii) exploration for reserves replacement; and (iii) optimization of operations and existing infrastructure as leverage for new projects. As is usual in the oil and gas exploration and production business, we participate in exploration and production activities in conjunction with joint operation partners. Contractual arrangements among participants in a joint operation are usually governed by an operating agreement, which provides that costs, entitlements to production and liabilities are to be shared according to each party’s interest in the joint operation. One party to the joint operation is usually appointed as operator and is responsible for conducting the operations under the overall supervision and control of an operating committee that consists of representatives of each party to the joint operations. While operating agreements generally provide for liabilities to be borne by the participants according to their respective interest, licenses issued by the relevant governmental authority generally provide that participants in joint operations are jointly and severally liable for their obligations to the relevant governmental authority pursuant to the applicable license. In addition to their interest in field production, contractual operators are generally paid their indirect administrative expenses on a monthly basis by their partners in proportion to their participation in the relevant field. As of December 31, 2025: · our combined crude oil and natural gas proved reserves were 296 million boe, 54% of which were proved developed reserves. Natural gas accounted for approximately 81% of our combined proved reserves and liquid hydrocarbons for 19%; and · our combined oil and gas production in Argentina averaged 84.4 thousands of boe per day. Crude oil accounted for approximately 11.7 thousands of boe per day, while natural gas accounted for approximately 437 million standard cubic feet per day, or 72.8 thousands of boe per day based on a measure of conversion of 6,000 cubic feet of gas per barrel of oil equivalent. During 2025, according to the SE, gas gross production in Argentina increased by 2% (4.99 billion cubic feet per day on average), whereas oil gross production increased 13% at 794.5 thousand barrels per day (on average). For 2025, according to the SE, our consolidated oil and gas production accounted for approximately 1.2% and 9% of total oil production and gas production in Argentina, respectively. Key Information Relating to Oil and Gas As of December 31, 2025, we had interests in 11 areas, joint operations (UTEs) and agreements in Argentina: 9 oil and gas production areas and 2 exploration blocks located within exploration areas or pending authorization for production. As of December 31, 2025, we were directly the contractual operator of 7 of the 11 blocks in which we hold equity interest. Acreage As of December 31, 2025, our total production and exploration acreage, both gross and net, was as follows. The table includes the total production and exploration acreage by the Company, joint operations and associates. Acreage Production (1) Exploration (2) Gross(3) Net (4) Gross(3) Net (4) (in thousands of acres) Argentina 1,167 389 65 57 (1) Includes all areas in which we produce commercial quantities of oil and gas or areas in the development stage. (2) Includes all areas in which we are allowed to perform exploration activities but where commercial quantities of oil and gas are not produced, plus areas that are not in the development stage. (3) Does not include Río Limay Este area, which is in process of relinquishment. (4) Adjusted at our working interest ownership in the gross acreage. 46 Table of Contents Productive Wells As of December 31, 2025, our total gross and net productive wells were as follows. The table includes the total gross and net productive wells by the Company, joint operations and associates. Oil Gas Total (3) Gross (1) Net (2) Gross (1) Net (2) Gross (1) Net (2) Argentina 45 33 425 231 470 265 Note: All figures have been subject to rounding, so figures shown as totals may not add up. (1) Refers to the number of wells completed. (2) Refers to fractional ownership working interest in gross productive wells. (3) Includes Oil and Gas productive wells. Drilling Activities In 2025, we carried out investment plans aligned with our reserves replacement and production goals, as a means to achieve sustainable growth. A development well, for purposes of the following table, is one that justifies the installation of permanent equipment for the production of oil or gas. A well is deemed to be a dry well if it is determined to be incapable of commercial production. “Gross wells drilled” in the table below refers to the number of wells completed during each fiscal year, regardless of the spud date, and “net wells drilled” relates to our fractional ownership working interest in wells drilled. This table includes wells drilled by the Company, joint operations and associates (includes our discontinued operations). The following table sets forth the number of total wells we drilled in Argentina and the results for the relevant periods. Year ended December 31, 2025 2024 2023 Argentina Gross wells drilled: Production: Development wells: Oil 26 1 9 Gas 12 18 35 Dry wells - - - Total 38 19 44 Exploration: Discovery wells: Oil 2 - - Gas 1 - - Dry wells - - - Total 3 0 0 Net wells drilled: Production: Development wells: Oil 26 1 3 Gas 9 9 24 Dry wells - - - Total 35 10 27 Exploration: Discovery wells: Oil 1 - - Gas 1 - - Dry wells - - - Total 2 0 0 Note: All figures have been subject to rounding, so figures shown as totals may not add up. In 2025, our activity was focused on the development of our shale oil production in Rincón de Aranda, where 26 wells were drilled. Also, regarding oil, 1 exploratory net well was drilled in Rio Neuquén. As for gas, the core of the activity was concentrated in the Neuquén Basin, mainly in El Mangrullo and Sierra Chata, where 7 net wells were drilled in Sierra Chata, all of them being from shale reserves, Río Neuquén with net 2 wells drilled and Parva Negra with 1 exploratory well drilled. 47 Table of Contents Oil and Gas Production We transport our oil and gas production through several methods depending on the infrastructure available and the cost efficiency of the transportation system in a given location. We use the oil pipeline system and oil tankers to transport oil to our customers. Oil is customarily sold through contracts whereby producers are responsible for transporting produced oil from the field to a port for shipping, with all costs and risks associated with transportation borne by the producer. Gas, however, is sold at the delivery point of the gas pipeline system near the field and, therefore, the customer bears all transportation costs and risks associated therewith. Oil and gas transportation in Argentina operate in an “open access” non-discriminatory environment under which producers have equal and open access to the transportation infrastructure. We maintain limited storage capacity at each oil site and at the terminals from which oil is shipped. In the past, such capacity has been sufficient to store oil without reducing production during temporary unavailability of the pipeline systems, for example, due to maintenance requirements or temporary emergencies. During 2025, our production was concentrated in three basins: Neuquén, San Jorge and Noroeste. In Argentina, we own 446,000 net acres, and in the Neuquén basin — the most important basin in the country in terms of oil and gas production —we own approximately 315,000 net acres (representing 71% of our total acreage). Our most important fields in the Neuquén basin are Rincón de Aranda, El Mangrullo, Sierra Chata and Río Neuquén. As of December 31, 2025, we lifted hydrocarbons from 470 productive wells in Argentina. For the year 2025, our average daily production was 11,682 barrels of crude oil and 437 million cubic feet of natural gas. Gas production was maintained and Oil production increased 145% compared to our 2024 average. The following table sets forth our oil and gas production during 2025. Production figures represent our working interest in production (and are therefore net to the Company). In addition, the table includes our working interest in each field, operator and the expiration date of the concessions, in each case as of December 31, 2025. Although some of these concessions may be extended at their expiration, the expiration dates set forth below do not include any extensions not granted as of the date of this annual report. 2025 Production Production Blocks Location Basin Oil (1) Gas (2) Oil Equivalent (3) Operator Direct and Indirect Interest Expiration El Mangrullo Neuquén NQN 11 83,630 13,949 Pampa 100.00 % 2053 Sierra Chata Neuquén NQN 25 53,659 8,968 Pampa 45.55% 2053 Río Neuquén Neuquén/Río Negro NQN 300 16,867 3,112 YPF 33.07%(4)/31.42%(5) 2027/2051 Rincón del Mangrullo (6) Neuquén NQN 5 2,128 360 YPF 50.00% 2052 Río Limay Este (Ex Senillosa)(7) Neuquén NQN 0 0 0 Pampa 85.00% 2040 Aguaragüe Salta NOA 40 1,540 297 Tecpetrol 15.00% 2037 El Tordillo (8) Chubut CGSJ 393 297 442 Tecpetrol 35.67% 2027 La Tapera – Puesto Quiroga (8) Chubut CGSJ 15 0 15 Tecpetrol 35.67% 2027 Rincón de Aranda Neuquén NQN 3,448 807 3,582 Pampa 100.00% 2058 Veta Escondida Neuquén NQN 0 0 0 Pampa 55.00% 2027 Los Blancos Salta NOA 18 0 18 High Luck 50.00% 2045 Total 4,256 158,928 30,744 Note: All figures have been subject to rounding, so figures shown as totals may not add up (1) In thousands of boe. (2) Gas production represents only marketable production of natural gas excluding flared gas, injected gas and gas consumed in operations. In millions of cubic feet. (3) In thousands of boe. Gas is converted to oil equivalent using a factor of 6,000 cubic feet of gas per barrel of oil equivalent. (4) Province of Neuquén. (5) Province of Río Negro. (6) Does not include Vaca Muerta formation. (7) In process of relinquishment. (8) the Company sold the area in October 2025. 48 Table of Contents The following table sets forth the production of oil and gas in Argentina for the relevant periods: Year ended December 31, 2025 2024 2023 Argentina Oil (1) Gas (2) Oil (1) Gas (2) Oil (1) Gas (2) Río Neuquén 300 16,867 293 19,720 297 20,071 El Mangrullo 11 83,630 17 96,179 25 78,128 Sierra Chata 25 53,659 83 40,505 21 29,004 Rincón de Aranda 3,448 807 329 0 0 0 Other blocks 472 3,965 1.020 4,426 1,420 5,449 Total 4,256 158,928 1,742 160,829 1,762 132,652 Note: All figures have been subject to rounding, so figures shown as totals may not add up. (1) Oil production includes other liquid hydrocarbons. Amounts in thousands of barrels. (2) Gas production represents only marketable production of natural gas excluding flared gas, injected gas and gas consumed in operations. Amounts in millions of cubic feet. Exploration Our strategy is focused on constantly searching for new exploration opportunities aligned with our growth targets. In Argentina, we own substantial acreage containing undeveloped unconventional reservoirs, including both tight and shale gas in the Neuquén basin. The following table lists our exploration blocks, joint operations and permits in Argentina as of December 31, 2025, the location and basin of each area, our net working interest and the expiration date for the exploration authorization. 2025 Production Blocks/UTE Location Basin Oil kbbl Gas mcf Total kboe Operator Interest Expiration Parva Negra Este Neuquén NQN 0 468 78 Pampa 85.00% 2025 Las Tacanas Norte Neuquén NQN - - - Pampa 90.00% 2027 Total Exploration Blocks 0 468 78 Total Production 4,256 159,396 30,822 Note: All figures have been subject to rounding, so figures shown as totals may not add up. As of December 31, 2025, we held interests in approximately 65,000 gross exploration acres in Argentina. Cost of Sales, Revenues and Price Cost of Sales, Royalties and Depreciation The following table sets forth our average cost of sales, royalties and depreciation cost in our oil and gas fields in each geographic area for the fiscal years ended December 31, 2025, 2024 and 2023. This table includes our net share of production, joint operations and associates. Year ended December 31, Argentina 2025 2024 2023 (in U.S.$ per barrel of oil equivalent) Production cost 7 6 7 Royalties 4 3 4 Depreciation 9 8 7 Total 20 17 18 Revenues The following table sets forth revenues for the oil and gas exploration and production business segment by geographic area for the fiscal years ended December 31, 2025, 2024 and 2023. Year ended December 31, 2025 2024 2023 Argentina (in millions of U.S.$) Oil 267 127 121 Gas 585 591 534 Others 10 12 11 Total 862 730 666 49 Table of Contents The following table sets forth the average sales price per barrel of oil and per million cubic feet of gas for each geographic area for the fiscal years ended December 31, 2025, 2024 and 2023. Year ended December 31, Average price of sale for barrel of Oil and for million cubic feet of Gas 2025 2024 2023 Argentina Oil (In U.S.$ per barrel of Oil) 63 73 69 Gas (In U.S.$ per thousand cubic feet) 4 4 4 Delivery commitments Natural Gas Created on November 16, 2020, Plan Gas.Ar seeks to promote Argentine natural gas production and manage the gas cost impact on the Priority Demand’s tariff through tendering long-term supply agreements (DNU No. 892/20). Initially, the term for onshore production was 4 years, with an additional 4 years for offshore production from January 2021. The term was extended until December 31, 2028, for the 70 million m3 per day base volume awarded under rounds 1 and 3 (DNU No. 730/22). Agreements are executed between producers (as sellers) and CAMMESA, gas distributors and ENARSA (as purchasers), with a 100% daily DoP and a 75% monthly ToP for CAMMESA and quarterly ToP for gas distributors and ENARSA. The awarded price is adjusted by the following factors: 0.82 in the summer period (October-April), and 1.25 (May-September) during the winter period for the base volume. CAMMESA and ENARSA, as purchasers, pay the awarded price, whereas gas distributors pay the price set forth in the effective tariff scheme, with the difference being offset by the Federal Government. Moreover, the Federal Government has set a compensation support guarantee system based on tax credit certificates, notwithstanding other applicable mechanisms. For more information about the different Plan Gas.Ar’s round tenders, please see “Item 4. The Argentine Energy Sector – Oil & Gas Regulatory Framework – Regulations Specifically Applicable to the Gas Market –Plan Gas.Ar.” Pampa participated and was awarded in all Plan Gas.Ar’s rounds in the Neuquina Basin. Each round’s conditions for Pampa are detailed below: Round Delivery Volume in million m3/day Price in U.S.$/MBTU Expiration 1 & 4.1 Annual flat 4.90(1) 3.60(2) December 2028 3 & 4.1 Annual flat 2.00 3.347(2) December 2028 4.2 Annual flat 4.80 3.485(2) December 2028 5.2 Northwest Monthly variable 13.5 – 70.5 thousand m3/day 6 – 9.8(4) December 2028 Note: 1) The total commitment from May 2021 is 7 million m3/day. Out of this, 4.9 are deliveries under Plan Gas.Ar and the balance is sold on the market. 2) 1.25 adjustment factor in the winter and 0.82 for the rest of the year. 3) It covers the months of May through September. 4) Prices start at U.S.$9.8/MBTU and drop to U.S.$6/MBTU in 2028. Once the Plan Gas.Ar commitments are fulfilled, the remaining natural gas will be allocated to industries, exports, CAMMESA’s monthly tenders and the spot market. Oil Regarding Oil deliveries, within the “Vaca Muerta Oil Sur Project”, we will hold a dispatch capacity of 50,000 barrels per day. For more information, see “Item 4. Our Business - Our Holding and Others Business – VMOS.” 50 Table of Contents Also, we have an agreement signed for 6,000 barrels per day in the “Proyecto Duplicar”, until the end of the Oldelval concession in 2037. For more information, see “Item 4. Our Business - Our Holding and Others Business – Oldelval.” Reserves We believe our estimates of remaining proved recoverable oil and gas reserve volumes to be reasonable. Pursuant to Rule 4-10 of Regulation S-X (Title 17 of the Code of Federal Regulations Part 210), proved oil and gas reserves are those quantities of oil and gas, which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible from a given date forward, from known reservoirs, and under existing economic conditions, operating methods, and government regulations prior to the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain, regardless of whether deterministic or probabilistic methods are used for the estimation. The project to extract the hydrocarbons must have commenced or the operator must be reasonably certain that the project will commence within a reasonable time. The evaluation of our reserves covered the reserves located in areas operated and non-operated by the Company. The proved oil and natural gas reserves were estimated in accordance with Rule 4-10 of Regulation S-X and in accordance with the oil and gas reserves disclosure provisions of FASB Topic 932. GaffneyCline performed an independent audit of 99% of our estimated proved reserves as of December 31, 2025. We provided all information required during the course of the audit process to the satisfaction of GaffneyCline. See the Reserves Report by GaffneyCline, dated January 21, 2026, included as Exhibit 13.2 to this annual report. As of December 31, 2025, 2024 and 2023, 99%, 98%, and 99%, respectively, of our estimated proved oil equivalent reserves were audited by GaffneyCline. As of December 31, 2025, our liquid hydrocarbon and natural gas proved developed and undeveloped reserves totaled 295.8 million of oil equivalent barrels (boe), 57.0 million barrels of liquid hydrocarbons and 1,433.1 billion cubic feet, or 238.8 million boe, of natural gas, of which 1,407.2 billion cubic feet were estimated to be sales gas and 25.9 billion cubic feet were estimated to be consumed as fuel gas in operation (which are included in our total natural gas proved reserves). For variations of our reserves data, see Reserves Evolution below. Liquid hydrocarbons and natural gas accounted for 19% and 81%, respectively, of our total proved reserves as of December 31, 2025. As of December 31, 2025, proved developed reserves of crude oil equivalent represented 54% of our total proved reserves of crude oil equivalent and we had proved reserves equal to approximately ten years of production at 2025 volumes. The following table sets forth our estimated net proved developed and undeveloped reserves of crude oil and natural gas as of December 31, 2025, including joint operations and associates. Reserves as of December 31, 2025 Reserves Category Crude oil, condensate and natural gas liquids (millions of barrels) Natural Gas (billions cubic feet) Oil Equivalent (million boe) Proved Developed 24.0 814.2 159.7 Proved Undeveloped 33.0 618.9 136.1 Total proved reserves 57.0 1,433.1 295.8 Note: Totals may not exactly equal the sum of the individual entries because of rounding. The statements contained in this Item 4 regarding exploration and development projects and production estimates are forward-looking and subject to significant risks and uncertainties. Although we believe that these expectations reflected in these forward-looking statements are reasonable, we cannot guarantee that our actual levels of activity, production or performance will meet those expectations. See “Item 3. Key Information—Risk Factors.” 51 Table of Contents The following table sets forth the breakdown of our total proved reserves of liquid hydrocarbons and natural gas into proved developed and proved undeveloped reserves as of December 31, 2025, 2024 and 2023: 2025 2024 2023 Millions of boe (1) % of total proved reserves Millions of boe % of total proved reserves Millions of boe % of total proved reserves Proved developed reserves 159.7 54.0% 128.0 55.4% 128.4 64.5% Proved undeveloped reserves 136.1 46.0% 103.2 44.6% 70.6 35.5% Total Proved Reserves 295.8 100.0% 231.2 100.0% 199.0 100.0% Note: Totals may not exactly equal the sum of the individual entries because of rounding. During 2025, a total of forty-one “gross wells” were completed in the Rincón de Aranda, Sierra Chata, Río Neuquén blocks and Parva Negra Este exploration area. Fourteen wells from the Sierra Chata, Rincón de Aranda and Río Neuquén were changed from “proved undeveloped reserves” to “proved developed reserves”. Estimated reserves were subject to economic evaluation to determine their economic limits. Estimated reserves in Argentina are stated before royalties since royalties have the same impact as taxes on production and are not paid in kind and therefore are treated as operating costs. Reserves Evolution The table below sets forth total proved reserves and proved developed reserves of crude oil, condensate and natural gas liquids, and reserves of natural gas, at the dates indicated. This table includes our net share of the proved reserves of our joint operations and associates: Crude oil, condensate and natural gas liquids Natural gas Argentina Combined (in thousands of barrels) (in millions of cubic feet) (in million boe) (1) Total proved developed and undeveloped reserves as of December 31, 2023 11,586 1,124,245 199.0 Proved developed reserves as of December 31, 2023 7,592 724,775 128.4 Increase (decrease) originated in: Revisions of previous estimates -5 -10,011 -1.7 Improved recovery 253 56 0.3 Extensions and discoveries 9,167 321,665 62.8 Purchase of proved reserves 0 0 0.0 Sale of proved reserves -2,003 -365 -2.1 Year’s production -1,796 -151,417 -27.0 Total proved developed and undeveloped reserves as of December 31, 2024 17,201 1,284,172 231.2 Proved developed reserves as of December 31, 2024 4,409 741,634 128.0 Increase (decrease) originated in: Revisions of previous estimates 1,967 76,280 14.7 Improved recovery 0 0 0.0 Extensions and discoveries 43,106 221,718 80.1 Purchase of proved reserves 0 0 0.0 Sale of proved reserves -947 -700 -1.1 Year’s production -4,361 -148,363 -29.1 Total proved developed and undeveloped reserves as of December 31, 2025 56,967 1,433,107 295.8 Proved developed reserves as of December 31, 2025 23,994 814,199 159.7 (1) Gas converted to oil equivalent using a factor of 6,000 cubic feet of gas per barrel of oil equivalent. During 2025, previous estimates of our fields located in Argentina were subject to revisions representing an increase of 14.7 million boe mainly attributable to more than expected production performance in the Sierra Chata, El Mangrullo and Rincón de Aranda areas offsetting lower productivity in the Rio Neuquén area. Extension and discoveries increased by 80.1 million boe through drilling activities, in the Rincón de Aranda, Sierra Chata and Río Neuquén areas. Also, the sale of our interest in the El Tordillo area caused a reduction of 1.1 million barrels of oil equivalent in our reserves. 52 Table of Contents As of December 31, 2025, 54% of our “proved reserves” were developed, while 46% were undeveloped. Proved developed reserves were 159.7 million boe. During 2025, we invested U.S.$ 184 million in drilling, completion and facilities, to convert approximately 23.2 million boe of “proved undeveloped reserves” to “proved developed reserves”. Our “proved undeveloped reserves” were 136.1 million boe, all of which corresponded to wells offsetting existing “proved developed reserves” where the activity has been scheduled to target production levels in accordance with contracts and installed and future facilities. We plan to put approximately 94.7% of these “proved undeveloped reserves” into production through activities to be implemented over the next five years. The balance of 5.3% (7.2 million boe) will be developed over periods exceeding five years and are mainly located in gas fields where the activity has been scheduled to maintain production levels in accordance with contracts and installed facilities. The 32% increase (32.9 million boe) in our “proved undeveloped reserves” in 2025 compared to 2024 was mainly attributable to: (1) a decrease of 12.7 million boe by the conversion of “proved undeveloped reserves” to “proved developed reserves”, mainly through drilling, completion and workover activities performed in our production areas in the Neuquén basin, mainly in the El Mangrullo and Río Neuquén areas; (2) an increase of 44.2 million boe of “proved undeveloped reserves” by extensions and discoveries, through additional drilling activities, mainly in the El Mangrullo, Sierra Chata, Rincón de Aranda and Río Neuquén areas in the Neuquén basin; and (3) an increase of 1.2 million boe of “proved undeveloped reserves”, came from revisions of previous estimates mainly attributable to better performance than expected of proved undeveloped wells in the Rincón de Aranda and El Mangrullo areas. The activities described in items (1), (2) and (3) above resulted in a net increase of approximately 32.9 million boe in our “proved undeveloped reserves” in 2025 compared to 2024. Internal Control over Proved Reserves The reserves estimation process begins with an initial evaluation of our assets by geophysicists, geologists, and engineers. A Reserves Technical Officer (Jefe de Reservas) safeguards the integrity and objectivity of our reserves estimates by supervising and providing technical support to technical teams who are responsible for preparing the reserves estimates. Our technical teams have degrees in geophysics, geology, petroleum engineering and accounting, and are trained internally in reserves estimations seminars. The technical officer is responsible for consolidating and auditing the reserves estimation process in compliance with the SEC reserves guidelines. The technical officer primarily responsible for overseeing the preparation of our Reserves Report is a member of the Society of Petroleum Engineers, with over 30 years of experience in exploration and production activities. Our reserves estimates are approved by the Oil and Gas Exploration and Production Director. The reported hydrocarbon reserves were estimated based on professional, geological, and engineering judgment and on information available prior to December 31, 2025. Thus, they are subject to revisions, upward or downward, as a result of future operations or as additional information becomes available. The estimation of reserves is imprecise due to many unknown geologic and reservoir factors that can only be estimated through sampling techniques. Since reserves are therefore only estimates, they cannot be appraised for the purpose of verifying exactness. There are many uncertainties in estimating quantities of proved reserves and in projecting future rates of production and the timing of development expenditures, including certain factors that are beyond our control. The reserves data set forth in this annual report solely represents estimates of our proved oil and gas reserves. Reserves engineering is a subjective process of estimating underground accumulations of crude oil and natural gas that cannot be precisely measured. The accuracy of reserves estimates stems from available data, engineering and geological interpretation and judgment of reserves and reservoir engineering. As a result, different engineers often obtain different estimates. In addition, results of drilling, testing and production subsequent to the date of an estimate may justify revision of such estimate, so the reserves estimates at a specific time are often different from the quantities of oil and gas that are ultimately recovered. Furthermore, estimates of future net revenues from our proved reserves and the present value thereof are based upon assumptions about future production levels, prices and costs that may prove to be incorrect over time. Estimates of future prices, costs and production volumes are subject to uncertainties and may prove to be incorrect over time. The meaningfulness of such estimates is highly dependent upon the accuracy of the assumptions upon which they are based. Accordingly, we cannot provide assurances that any specified production levels will be reached or that any cash flow arising therefrom will be produced. The actual quantity of our reserves and future net cash flows therefrom may be materially different from the estimates set forth in this annual report. 53 Table of Contents We replace our reserves through the acquisition of producing fields, exploration, and by “proving up” reserves in existing fields. “Proving up” is the process by which additional reserves classified as “probable and possible reserves” in a producing field are accessed and reclassified as “proved reserves”. We prove up reserves with reservoir management techniques, such as appraisal wells, water flooding, and enhanced oil recovery projects. The reservoir management techniques currently used are appraisal wells, water injection, and the drilling of horizontal producing and injection wells. Technologies such as 3D seismic process, horizontal and step out wells, and reservoir numerical stimulation are also used. About the Independent Reserves Engineers Firm GaffneyCline has more than 50 years of excellence in energy consulting, with extensive experience in the world’s oil basins in estimating and auditing reserves and resources. GaffneyCline focuses solely on the petroleum and energy industry, and specializes in the provision of policy, strategy, technical and commercial assistance to governments, financial institutions, and national and international oil, gas and energy companies worldwide. The provision of Reserves and Resources assessments is a core component of GaffneyCline’s business. GaffneyCline is fully familiar with the SEC regulations regarding oil and gas reserves (Rule 4-10 (a) of Regulation S-X). GaffneyCline employs a combination of commercial and technical professionals in main offices in the United Kingdom, United States and Singapore, with supporting offices in Argentina, Australia and Brazil. This staff encompasses all upstream technical disciplines (geology, geophysics, petrophysics, reservoir engineering, drilling and completion and development planning / facilities engineering), with midstream and downstream engineering and economics, commercial, legal and business strategy professionals to complement its technical staff. The Reserves Report covered 99% of our estimated total “proved reserves”. In connection with the preparation of the Reserves Report, the Independent Reserves Engineers Firm prepared its own estimates of our proved reserves. In the process of the reserves evaluation, the Independent Reserves Engineers Firm did not independently verify the accuracy and completeness of information and data furnished by us with respect to ownership interests, oil and gas production, well test data, historical costs of operation and development, product prices, or any agreements relating to current and future operations of the fields and sales of production. However, if in the course of the examination something came to the attention of the Independent Reserves Engineers Firm that brought into question the validity or sufficiency of any such information or data, the Independent Reserves Engineers Firm did not rely on such information or data until it had satisfactorily resolved its questions relating thereto or had independently verified such information or data. The Independent Reserves Engineers Firm independently audited reserves estimates to conform to the guidelines of the SEC, including the criteria of “reasonable certainty,” as it pertains to expectations about the recoverability of reserves in future years, under existing economic and operating conditions, consistent with the definition of SEC Regulation S-X Section 210.4-10(a) issued the Reserves Report based upon its evaluation. The Independent Reserves Engineers Firm’s primary economic assumptions in estimates included oil and gas sales prices determined according to SEC guidelines, future expenditures and other economic assumptions (including interests, royalties and taxes) as provided by us. The assumptions, data, methods and procedures used, were appropriate for the purpose served by such report, and the Independent Reserves Engineers Firm used all methods and procedures as it considered necessary under the circumstances to prepare such reports. Technology used in reserves estimation The project to extract the hydrocarbons must have commenced or the operator must be reasonably certain that the project will commence within five years. The term “reasonable certainty” implies a high degree of confidence that the quantities of oil and/or natural gas actually recovered will equal or exceed the estimate. Reasonable certainty can be established using techniques that have been proven effective by actual production from projects in the same reservoir or an analogous reservoir or by other evidence using reliable technology that establishes reasonable certainty. Reliable technology is a grouping of one or more technologies (including computational methods) that have been field tested and have been demonstrated to provide reasonably certain results with consistency and repeatability in the formation being evaluated or in an analogous formation. 54 Table of Contents There are various generally accepted methodologies for estimating reserves including volumetric, decline analysis, material balance, simulation models and analogies. Estimates may be prepared using any of such deterministic methods. The particular method chosen should be based on the evaluator’s professional judgment as being the most appropriate, given the geological nature of the property, the extent of its operating history and the quality of available information. It may be appropriate to employ several methods in reaching an estimate for the property. Estimates must be prepared using all available information (open and cased hole logs, core analyses, geologic maps, seismic interpretation, production/injection data and pressure test analysis). Supporting data, such as working interest, royalties and operating costs, must be maintained and updated when such information changes materially. Our estimated “proved reserves” as of December 31, 2025, are based on estimates generated through the integration of available and appropriate data, utilizing well-established technologies that have been demonstrated in the field to yield repeatable and consistent results. Data used in these integrated assessments include information obtained directly from the subsurface via wellbore, such as well logs, reservoir core samples, fluid samples, static and dynamic pressure information, production test data, and surveillance and performance information. The data utilized also include subsurface information obtained through indirect measurements, including high quality 2-D and 3-D seismic data, calibrated with available well control. Where applicable, geological outcrop information was also utilized. The tools used to interpret and integrate all this data included both proprietary and commercial software for reservoir modeling, simulation and data analysis. In some circumstances, where appropriate analog reservoir models are available, reservoir parameters from these analog models were used to increase the reliability of our reserves estimates. FLNG Project On January 15, 2025, we acquired an interest in the FLNG Project, together with Pan American Energy S.L., Golar FLNG Holding Company Limited, YPF and Harbour Energy. The vessel is expected to start operating in September 2027. Pampa’s share in the company that will undertake the FLNG Project, SESA, is 20%. SESA’s application to adhere to the RIGI, in accordance with Law 27,442, Regulatory Decree No. 749/24, and other regulations that may amend and/or complement them, to be considered a Strategic Long-Term Export Project was approved on April 29, 2025. On May 2, 2025, the consortium satisfied all conditions required to move forward with the development of the FLNG Project, including the final investment decision for Hilli and the approval of its application for enrollment under the RIGI. A second vessel, the “MKII”, was included in the project. Both units are expected to provide a combined processing and export capacity of approximately 6 million tons per year of LNG (equivalent to 27 million m³/day of natural gas). The FLNG Project represents an estimated investment of approximately U.S.$ 7 billion over its 20-year operational horizon and is expected to position Argentina as a participant in the global LNG market. Operations of the Hilli and the MKII are expected to begin in late 2027 and 2028, respectively. To supply natural gas to both vessels, SESA entered into 20-year natural gas supply agreements with Pampa, Pan American Energy, YPF and Wintershall, each in proportion to its equity participation in SESA. The project also contemplates the construction of a dedicated gas pipeline from the Province of Neuquén to the San Matías Gulf to ensure year-round operation of both vessels, to be developed by the company San Matias Pipeline S.A., where we also hold a 20% interest. The FLNG Project is strategic to monetizing our Vaca Muerta reserves, positioning Argentina within the liquefied natural gas global market, and boosting foreign currency inflows, job creation, and the domestic supply chain. 55 Table of Contents Our Generation Business Our power generation assets include: CTG, CTP, CTPP, CTLL, CTIW, CPB, CTGEBA, HPPL, EcoEnergía, PEPE II, PEPE III, PEPE IV, PEPE VI and PEA and interests in CTB, HINISA and HIDISA (the latter two are currently in a transition period to end their license agreement). Renewable Energy PEPE II PEPE II is located on Provincial Route No. 51, 18 km from the city of Bahía Blanca in the province of Buenos Aires. It was commissioned in May 2019 with an installed capacity of 53 MW, representing 0.1% of Argentina’s power. Its 14 Vestas V-136 wind turbines, each with a capacity of 3.8 MW, have a hub height of 120 meters and a net capacity factor P50 of 56%. The average annual generation since 2020 has been 197 GWh. PEPE III PEPE III is located in Coronel Rosales, along National Route No. 3, 45 km from Bahía Blanca. It is a twin park of PEPE II with a net capacity factor P50 of 63% and an average annual generation of 221 GWh since 2020. PEPE IV Adjacent to PEPE III, PEPE IV provides 81 MW, equivalent to 0.2% of the country’s capacity, through 18 Vestas V-150 wind turbines of 4.5 MW each, with a hub height of 105 meters and a net capacity factor P50 of 63%. Since 2023, the average annual generation has been 244 GWh. PEA PEA is located in the province of La Rioja, 90 km north of the provincial capital along Provincial Route No. 9. It was acquired by Pampa in December 2022. PEA has 38 Siemens Gamesa G-114 wind turbines of 2.625 MW each, with a hub height of 80 meters and a net capacity factor P50 of 43%. Its installed capacity is 100 MW, representing 0.2% of Argentina’s power. PEA was commissioned in March 2020 and sells its energy to CAMMESA under the RenovAr program (Round 1). The historical average annual generation since 2020 has been 284 GWh. PEPE VI PEPE VI was commercially commissioned in different stages commencing in July 2024 and was completed in November 2024. PEPE VI features 31 Vestas wind turbines of 4.5 MW each, with a total installed capacity of 139.5 MW, representing 0.3% of Argentina’s power. In 2025, it generated 583 GWh. Hydroelectric Generation Plants We hold interests in three hydroelectric generation plants Hidroeléctrica Diamante (through HIDISA), Hidroeléctrica Los Nihuiles (through HINISA) and HPPL (which we fully own). HIDISA (in transition period) We own 61% of the voting capital stock of HIDISA, a hydroelectric generation company, located in the Province of Mendoza. The Province of Mendoza, through EMESA, currently owns the remaining capital stock of HIDISA. HIDISA operates under a provincial concession for the hydroelectric use of water from the Diamante River, located in the department of San Rafael in the Province of Mendoza, and under a national concession for the generation, sale and bulk trading of electricity from Diamante’s hydroelectric system (the “Diamante System”). The Diamante System consists of three dams and three hydroelectric power generation plants (Agua del Toro, Los Reyunos and El Tigre). The Diamante System covers a total distance of approximately 55 km with a height differential between 873 m and 1,338 m. HIDISA has an installed capacity of 388 MW, which represents 0.9% of the installed capacity in Argentina. From 1990 to 2025, the average annual generation has been 528 GWh, with the highest level of generation (943 GWh) recorded in 2006 and the lowest level (303 GWh) recorded in 2022. Also, HIDISA owns 0.9% of the capital stock of TJSM and 0.8% of the capital stock of TMB. 56 Table of Contents HINISA (in transition period) We own 52.04% of the voting capital stock of HINISA, a hydroelectric generation company, located in the Province of Mendoza. The Province of Mendoza, through EMESA, currently holds the remaining capital stock of HINISA. HINISA operates under a provincial concession for the hydroelectric use of water from the Atuel River, located in the department of San Rafael in the Province of Mendoza (approximately 1,100 km southwest of Buenos Aires) and under a national concession for the generation, sale and bulk trading of electricity from the Los Nihuiles’ hydroelectric system (the “Nihuiles System”). The Nihuiles System consists of three dams and three hydroelectric power generation plants (Nihuil I, Nihuil II and Nihuil III), as well as a compensatory dam, which is used to manage the system’s water flow for irrigation purposes. The Nihuiles System covers a total distance of approximately 40 km with the grid’s height ranging from 754 m to 1,251 m. HINISA has an installed capacity of 265 MW, which represents 0.6% of the installed capacity in Argentina. From 1990 to 2025, the average annual generation was 767 GWh, with the highest level of generation (1,250 GWh) recorded in 2006 and the lowest level (283 GWh) recorded in 2025. HINISA also owns 1.6% of the capital stock of TJSM and 1.4% of the capital stock of TMB. Termination of concessions. The original term of the HINISA and HIDISA concession agreements was 30 years, starting from June 1, 1994 in the case of HINISA and October 19, 1994 in the case of HIDISA. Thus, the original concessions expired during 2024. However, under the relevant concession agreements both the national and provincial governments opted to extend the concession term for a one-year period as provided therein. Consequently, the reversion of the concession was postponed until June 1, 2025 in the case of HINISA. In the case of HIDISA, the SE extended the transition period until June 1, 2025, while the Province of Mendoza extended it until October 19, 2025. On March 8, 2025, the National Government and the Province of Mendoza signed an agreement to jointly carry out the public national and international bidding process for the concession of the Diamante and Nihuiles Hydroelectric Complexes as a single business unit. The bidding process will include the transfer of 51% of the shareholding package of the company that becomes the concessionaire and owner of the assets. However, as of the date of this report, the tender has not been launched. On May 26, 2025, by Law No. 6,930, the Province of Mendoza declared an emergency with respect to the Nihuiles System for a 14-month period and extended the term of the concession. The Company stated that such an extension requires an agreement with HINISA. However, the National Concession of HINISA expired on June 1, 2025, and, in the absence of a determination by the authorities, HINISA decided to continue operating to safeguard the concession assets, electricity supply, and the safety of people and facilities. Such continued operation does not imply that HINISA unilaterally accepts the extension or assumes new obligations or responsibilities, nor that it waives its rights under the Concession Agreements. On October 20, 2025, the SE proposed to extend HIDISA’s concession until June 2026, subject to HIDISA’s adherence to the conditions of the original contract and to new provisions, including the update of guarantees, waiver of claims against the State due to changes in the remuneration scheme, and payment of royalties to the Province of Mendoza (SE Resolution No. 398/25). Law No. 6,930 authorized HIDISA to continue with the use of water for the operation of the hydroelectric assets. On November 19, 2025, HIDISA confirmed its adherence to the proposed extension. HPPL In August 1999, we were awarded a 30-year concession for hydroelectric power generation at HPPL. The HPPL complex, located in the Comahue region, Province of Neuquén, has three electricity generating units. The dam is constructed of loose materials with a waterproof concrete side. The dam has a total length of 1,045 m, a total height of 54 m at the deepest point of the foundation, and a crest at 480.2 m above sea level. HPPL has an installed capacity of 285 MW, which represents 0.7% of Argentina’s installed capacity. From 2000 to 2025, HPPL’s average annual generation was 912 GWh, with a generation record high of 1,430 GWh in 2006, and a record low of 494 GWh in 2016. 57 Table of Contents Summary of HPPL concession HPPL’s concession was granted pursuant to the following terms and conditions: Term. 30 years, starting August 30, 1999. Royalty payments. According to the concession contract and applicable laws, we pay 12% for hydroelectric royalties and a 0.5% monthly fee to the Argentine Government for the use of the water resource. Such amounts are calculated based on the tariff rate applied to the electricity block sold. Contingency fund. We make quarterly payments to a foundation that owns and manages a contingency fund created to cover up to 80% of the difference between the aggregate amount of potential costs relating to any repair of the hydroelectric systems at any of the hydroelectric generation plants and U.S.$5 million, to the extent such costs are not covered by their respective insurance policies. Fines and Penalties. Under the HPPL concession agreement, we are subject to potential penalties and fines. They are calculated based on the aggregate gross amount invoiced during a 12-month period prior to the imposition of such penalties according to the following ranges: (i) from 0.1% to 1% in cases of breach of the terms of the agreement or regulations applicable to power generation, dam safety, water management, environmental protection, and non-compliance of instructions from the Organismo Regulador de Seguridad de Presas (ORSEP), CAMMESA, any of the regulatory authorities or the ENRE; (ii) from 0.02% to 0.2% in cases of delays or lack of payment of contributions to the contingency fund and insurance policies and for taking action without prior authorization of the respective regulatory authorities; (iii) from 0.01% to 0.1% in cases of failure to submit any requested information or failure to file mandatory reports; (iv) from 0.03% to 0.3% in cases of failure to keep routes and roads open to traffic and free from soil, air or water pollution, and delays in the fulfillment of mandatory work; and (v) from 1% to 10% in cases of any actions considered by the regulatory authorities as termination events under the concessions. If the fines imposed in a 12-month period exceed 20% of the gross amount invoiced for power sales, the granting authority would be entitled to terminate the relevant concession agreement. Performance guarantees. As security for the performance of the obligations under the HPPL concession, we have deposited Ps.2.0 million for the benefit of the relevant granting authority. Upon the expiration or termination of the concession agreement, in case there is no set-off by the granting authority in the event of a breach or any other event of non-compliance under the terms of the concession agreement, such amount will be released. Termination of concessions. HPPL’s concession agreements may be terminated upon the occurrence of any of the following events: (i) breach of material contractual and legal obligations, in which case we shall remain in charge of the concessions during a transitional period established by the granting authority, not exceeding 12 months, and shall indemnify the Argentine Government for any damages caused (the granting authorities may also apply the performance guarantee amounts toward the payment of any damages). A public bidding process would be called for the purpose of granting a new concession. After deducting all fines, interest and withholdings for prospective claims, the balance would be reimbursed to us as the only compensation for the transfer of the concessions; (ii) certain bankruptcy events, including any liquidation or winding-up proceedings, in which case the termination of the relevant concession shall be automatic; (iii) force majeure or certain actions by third parties that prevent compliance with the obligations under the concession agreement; or (iv) expiration of the term of the concession agreements. Thermal Generation plants CTGEBA CTGEBA is located in Marcos Paz, Province of Buenos Aires. The plant began operating in 1999 and has two CC, one with a 684 MW installed capacity, which consists of two gas turbines of 223 MW each and a 238 MW steam turbine, repowered in October 2020. The second CC consists of a gas turbine of 182 MW, known as Genelba Plus, which was commissioned in 2009 and repowered in June 2019, as well as a 188 MW gas turbine incorporated in 2019 under the expansion to CC process and steam turbine of 199 MW which was incorporated on July 2, 2020. Currently, the total installed capacity of the CTGEBA complex amounts to 1,253 MW, which represents 2.8% of Argentina’s installed capacity. From 2000 to 2025, CTGEBA’s historical average annual generation was 5,492 GWh, with a generation record high of 8,594 GWh in 2021, and a record low of 3,438 GWh in 2001. 58 Table of Contents CTEB CTEB is located in the City of Ensenada, Province of Buenos Aires, owned by CTB, a company that we jointly co-control with YPF. The plant began its operations in 2012 and consisted of (i) two open cycle gas turbines with an installed capacity of 569 MW; and (ii) a steam turbine that completed the combined cycle with a capacity of up to 279 MW, which entered commercial operations on February 22, 2023. Both (i) and (ii) had a total installed capacity of 848 MW, which represented 1.9% of the installed capacity in Argentina. During 2025, a repowering project was carried out on both (i) and (ii) which, combined with the major maintenance of the turbines, required an investment of U.S.$ 30 million and enhanced CTEB’s installed capacity by an additional 34 MW, which would be elevated to 888 MW. From 2013 to 2025, the average annual generation amounted to 1,910 GWh, with a generation record high of 4,741 GWh in 2024, and a record low of 255 GWh in 2020. Pampa operated the power plant until December 31, 2023 and, as of January 2024, Pampa and YPFL jointly operate CTEB under a shared operation scheme. CTLL CTLL is located in the Province of Neuquén. The plant was built in 1994 and consists of three gas turbines with an installed capacity of 375 MW, a 180 MW Siemens steam turbine installed in 2011 for its closing to CC and repowered in January 2018, a 105 MW General Electric aeroderivative gas turbine installed in May 2016, the incorporation in August 2017 of a 105 MW General Electric gas turbine and 15 MW from MAN gas engines in August 2021. CTLL has a privileged location due to its proximity to one of the largest gas fields in Latin America, also named Loma de la Lata. CTLL has an installed capacity of approximately 780 MW, representing approximately 1.8% of Argentina’s installed capacity. From 1997 to 2025, CTLL’s average annual generation was 2,539 GWh, with a generation record high of 5,103 GWh in 2022, and a record low of 272 GWh in 2002. During 2025, a major maintenance overhaul was performed on the CC plant’s TG01 unit. The tasks included upgrading the generator and transformer protections, as well as a complete replacement of the excitation system. A major inspection was conducted, featuring a turbine rotor replacement to extend its service life. The generator maintenance involved electrical measurements and preventive work on the Instrumentation and Control systems. Additionally, casing alignment and transformer bushing replacements were carried out, ensuring the unit’s operational reliability and efficiency. CPB CPB is a thermal generation plant located in Ingeniero White, Bahía Blanca, Province of Buenos Aires, approximately 600 kilometers away from the City of Buenos Aires. CPB is an open-cycle thermal generation plant that consists of two identical conventional units (Unit 29 and Unit 30) with an installed capacity of 310 MW each. CPB can be powered either by natural gas or by oil No.6 (though it was originally designed and partially equipped to burn coal as well). The plant currently stores up to 60,000 m3 of fuel oil in two separate storage tanks and owns, operates and maintains a 22-kilometer natural gas pipeline that is connected to the main pipeline of TGS. CPB has an installed capacity of 620 MW, which represents 1.4% of Argentina’s installed capacity. From 1997 to 2025, CPB’s average annual generation was 1,744 GWh, with a generation record high of 3,434 GWh in 2011, and a record low of 189 GWh in 2002. CTG CTG is located in the northwestern region of Argentina, in the City of General Güemes, Province of Salta. Privatized in 1992, it has a total installed capacity of 361 MW, comprised of (i) 261 MW from steam generation units and (ii) 100 MW from a gas combustion turbine, which accounts for 0.8% of Argentina’s installed capacity. From 1993 to 2025, its average annual generation was 1,486 GWh, with a generation record high of 1,903 GWh in 1996, and a record low of 225 GWh in 2022 and 2023. CTIW CTIW is located in Ingeniero White, Bahía Blanca, in the Province of Buenos Aires, and consists of six high-efficiency Wärtsilä engines. Liquid fuel supply is made using CPB’s discharge and storage facilities, and natural gas is also supplied from this power plant internal facilities. The plant has a total power installed capacity of 100 MW, which accounts for 0.2% of Argentina’s installed capacity. The annual average energy generation from 2018 to 2025 was 221 GWh, with a generation record high of 312 GWh in 2019, and a record low of 134 GWh in 2025. 59 Table of Contents CTPP CTPP is located in the Pilar Industrial Complex, in the district of Pilar, Province of Buenos Aires. Construction began in October 2016, and the plant was commissioned on August 29, 2017. The plant is made up of six cutting-edge Wärtsilä engines. Natural gas is supplied through a gas pipeline owned by Transportadora de Gas del Norte S.A. and the energy is evacuated through an output field of a 132kv double-bar cable, together with all the necessary auxiliary equipment, in the Pilar Substation No. 158 owned by Edenor (“Pilar Substation”), located at the Pilar Industrial Complex. The power plant has storage tanks for fuel oil which may be used as alternative fuel. CTPP has a total power capacity of 100 MW, which accounts for 0.2% of Argentina’s installed capacity. The annual average energy generation from 2018 to 2025 was 213 GWh, with a generation record high of 321 GWh in 2022, and a record low of 139 GWh in 2025. CTP CTP is located in the northwestern region of Argentina, in a location known as Piquirenda, District of Aguaray, Department of General San Martín, in the Province of Salta. Its construction started in early 2008 and was completed in 2010. CTP has a 30 MW thermal electricity generation plant including ten Jenbacher (model JGS 620) gas-powered motor-generators, which accounts for 0.1% of Argentina’s installed capacity. From 2011 to 2025, its average annual generation was 96 GWh, with a generation record high of 156 GWh in 2017, and a record low of 52 GWh in 2022. ECOENERGÍA EcoEnergía is a co-generation power plant located at TGS’ General Cerri complex in Bahía Blanca, in the Province of Buenos Aires. The plant was commissioned in 2011 and consists of a steam turbine. EcoEnergia has a power capacity of 14 MW, which accounts for 0.03% of Argentina’s installed capacity. From 2012 to 2025, EcoEnergía’s average annual generation amounted to 81 GWh, with a generation record high of 108 GWh in 2018, and a record low of 54 GWh in 2025. The following chart depicts our generation assets and our respective shares of the Argentine power generation market as of and for the years ended December 31, 2025, 2024 and 2023. Our generation operations derive revenues from the sale of electricity in the spot market and under term contracts, including Energía Plus contracts and WEM Supply Agreements. Summary of Electricity Generation Assets Wind Hydroelectric Subtotal Hydro + Wind PEMC (1) PEPE II PEPE III PEPE IV PEA PEPE VI (2) HINISA HIDISA HPPL Installed Capacity (MW) - 53 53 81 100 140 265 388 285 1,365 Market Share - 0.1% 0.1% 0.2% 0.2% 0.3% 0.6% 0.9% 0.7% 3.1% Net Generation 2025 (GWh) - 206 241 361 322 583 283 520 558 3,074 Market Share - 0.1% 0.2% 0.3% 0.2% 0.4% 0.2% 0.4% 0.4% 2.2% Sales 2025 (GWh) - 215 241 361 322 583 283 520 558 3,083 Net Generation 2024 (GWh) - 188 202 341 343 197 857 616 890 3,633 Variation Net Generation 2025-2024 - 10% 20% 6% (6)% - (67)% (16)% (37)% (15)% Sales 2024 (GWh) - 201 202 341 343 195 857 616 890 3,643 Net Generation 2023 (GWh) 193 209 204 274 326 - 543 361 1,060 3,170 Variation Net Generation 2024-2023 (100)% (10)% (1)% 24% 5% - 58% 71% (16)% 15% Sales 2023 (GWh) 193 213 217 274 326 - 543 361 1,060 3,187 In U.S.$/MWh Avg. Price 2025 - 89 63 63 79 63 21 28 20 49 Avg. Price 2024 - 81 64 64 82 64 13 21 13 35 Avg. Gross Margin 2025 - 48 54 54 56 55 3 17 7 35 Avg. Gross Margin 2024 - 49 57 57 64 59 5 10 5 24 Sources: Pampa Energía S.A. and CAMMESA. Note: Gross margin before amortization and depreciation. All figures have been subject to rounding, so figures shown as totals may not add up. (1) Divested in July 2023. (2) Gradual commissioning: 45 MW (Jul-24), 36 MW (Aug-24), 13.5 MW (Sep-24), 18 MW (Oct-24), 27 MW (Nov-24). 60 Table of Contents Summary of Electricity Generation Assets Thermal CTLL CTG CTP CPB CTPP CTIW CTGEBA ECO-ENERGÍA CTEB(1) Subtotal Total Installed Capacity (MW) 780 361 30 620 100 100 1,254 14 848 4,107 5,472 Market Share 1.8% 0.8% 0.07% 1.4% 0.2% 0.2% 2.8% 0.03% 1.9% 9.3% 12% Net Generation 2025 (GWh) 4,326 261 53 514 139 134 8,144 54 4,325 17,950 21,024 Market Share 3.1% 0.2% 0.04% 0.4% 0.1% 0.1% 5.8% 0.04% 3.1% 12.7% 14.8% Sales 2025 (GWh) 4,244 448 53 514 139 134 8,566 123 4,321 18,542 21,625 Net Generation 2024 (GWh) 4,754 303 59 262 192 145 7,584 70 4,741 18,111 31,743 Variation Net Generation 2025-2024 (9)% (14)% (9)% 96% (27)% (8)% 7% (23)% (9)% (1)% (3)% Sales 2024 (GWh) 4,705 625 59 262 192 145 8,043 150 4,733 18,914 22,557 Net Generation 2023 (GWh) 4,512 225 75 606 274 265 7,548 68 4,236 17,809 20,979 Variation Net Generation 2024-2023 5% 34% (22)% (57)% (30)% (45)% 0% 4% 12% 2% 4% Sales 2023 (GWh) 4,470 547 75 606 274 265 8,224 146 4,236 18,842 22,029 In U.S.$/MWh Avg. Price 2025 32 88 62 92 - - 39 39 36 42 43 Avg. Price 2024 20 54 30 124 - - 38 36 30 36 36 Avg. Gross Margin 2025 18 38 23 46 - - 20 14 26 24 26 Avg. Gross Margin 2024 17 21 3 24 - 142 19 10 24 22 23 Sources: Pampa Energía S.A. and CAMMESA. Note: Gross margin before amortization and depreciation. All figures have been subject to rounding, so figures shown as totals may not add up.(1) We hold an interest of 50% in CTB. Our Petrochemicals Business The petrochemicals segment is vertically integrated into our gas operations, allowing us to maximize the value chain and consolidate our position in the styrenics market. Our products include octane bases for gasoline, benzene, aromatic solvents, hexane and other hydrogenated paraffinic solvents, propellants for the cosmetic industry, styrene monomer, rubber and polystyrene for markets in Argentina and abroad. The performance of this segment is influenced by global supply and demand. Pampa is the only Argentine producer of styrene monomer, polystyrene and elastomers, and the only integrated manufacturer transforming oil and gas into plastics. As part of the integration strategy, we use our benzene production to obtain styrene, which in turn is used in the production of polystyrene and SBR. 61 Table of Contents The petrochemicals division has the following assets: · an integrated petrochemicals complex at PGSM, located in the Province of Santa Fe, with an annual production capacity of 50,000 tons of gases (LPG), which are used as raw material and propellants, 160,000 tons of styrene, 55,000 tons of SBR, 180,000 tons of ethylbenzene and 31,000 tons of ethylene. At the same site, we operate a reforming plant with a production capacity of 155,000 tons of aromatics, 290,000 tons of gasoline and refined products; and · a polystyrene plant located in the City of Zárate, Province of Buenos Aires, with a production capacity of 65,000 tons of polystyrene. The following table sets forth main indicators of sales by major product for the petrochemical division in Argentina for the fiscal year ended December 31, 2025, 2024 and 2023: 2025 2024 2023 Technical Information Sales (in thousand ton): Styrene (incl. propylene) & Polystyrene 84 88 111 SBR 41 45 43 Reforming & Others 335 336 250 Regarding styrene, 2025 continued to be marked by demand contraction and increased competition from imports. In the domestic market, SBR and styrene volumes decreased by 25% and 9% year-on-year, respectively, while polystyrene remained flat. The sales decrease was offset by the 67% year-on-year growth in styrene exports to Brazil. A 63% and 5% drop in polystyrene and SBR exports were recorded, respectively. Regarding propylene, sales volumes declined by 54% to 3 kton due to lower ethylene plant throughput and increased propane-propylene recirculation. Regarding Reforming, 2025 sales remained flat, driven by increases of 11% in solvents and 185% in aromatics, partially offset by decreases of 5% in octane bases, 3% in gasoline and 28% in propellant. 382 kton of raw gasoline were processed, 6% more than in 2024, including 68 kton of imports. Our Holding and Other Business Our holding and other business segment is comprised, among other holdings, of our direct and indirect interest in TGS and Transener. Our Interest in TGS TGS is Argentina’s main gas transportation company and operates the largest pipeline system in Latin America. It is also a leading company in producing and commercializing NGL, conducting this business from the General Cerri Complex located in Bahía Blanca, Province of Buenos Aires. TGS provides comprehensive natural gas solutions, including transportation to the main pipeline via the Vaca Muerta gathering pipeline, treatment at the Tratayén plant, and injection into the main gas pipeline. It also provides telecommunications solutions through its controlled company, Telcosur. As of December 31, 2025, Pampa holds a 26.9% interest in TGS. Description of TGS’ Business Segments Regulated Segment: Gas Transportation Revenues in this segment come mainly from firm transportation contracts, which guarantee the reservation of pipeline capacity through payment regardless of actual use, and, to a lesser extent, from interruptible services subject to availability. In addition, TGS operates and maintains gas transportation assets expanded by the Federal Government and held under trusts created for such purposes. For this service, TGS receives the Charge for Access and Use, set by ENARGAS as the regulatory entity. 62 Table of Contents In 2025, revenues from this segment amounted to U.S.$ 485 million, representing 41% of TGS’s total revenues, and grew 13% compared to 2024, driven by tariff updates and the five-year tariff review approval since May 2025. 80% of regulated revenues come from firm transportation contracts (compared to 84% in 2024), with a weighted average life of approximately 11 years and an average contracted firm capacity of 89.3 million m3 per day. In 2025, 71 new contracts were executed for interruptible transportation and 57 for exchange and displacement services. In 2025, the average daily gas injection into the system operated by TGS was 86.4 million m3 per day flat compared to 2024, including contributions from the Austral, Golfo San Jorge and Neuquina Basins, and the gas fed into the GPM in Salliqueló, which averaged 16.1 million m3 per day, 39% more than in 2024. Non-Regulated Segment: Production and Marketing of Gas Liquids In 2025, revenues from this segment amounted to U.S.$ 454 million, 16% lower than those recorded in 2024, mainly due to the climate event at the Cerri Complex in March 2025 and lower international reference prices. On March 7, 2025, an extraordinary flood affected the Cerri Complex, fully interrupting NGL production and partially disrupting natural gas transportation, while damaging the infrastructure of the city of Bahía Blanca. Given the asset’s strategic nature, gas transportation was fully and reliably restored by March 24, with no material impact on business revenues. The liquids segment remained shut down until mid-April 2025, resuming operations gradually and reaching normal production levels in early May. TGS submitted the relevant documentation to the insurance companies to recover damages incurred. Liquids production and commercialization activities are carried out at the Cerri Complex, located close to the City of Bahía Blanca and supplied by all of TGS’s main gas pipelines. Ethane, propane, butane and natural gasoline are recovered at this complex. TGS sells liquids in both domestic and foreign markets. In the domestic market, propane and butane are sold to reseller companies. These products and natural gasoline are sold at international reference prices in the foreign market. Moreover, ethane is sold to Polisur at a price agreed between the parties. In 2025, the total volume sold amounted to 1,077 ktons, although there was a temporary interruption at the Cerri Complex. The prompt restoration of operations and the plant’s resilience allowed the liquids segment to maintain stable operating performance. Richer gas from Vaca Muerta and the offshore Fénix field partially offset reduced gas availability from the Austral Basin and maintained process efficiency. Fifty-nine percent of volumes sold were destined to the domestic market, with 83% of prices denominated in U.S.$. While TGS continued to participate in government programs such as the Household Gas Bottles Program, sales prices converged toward export-parity levels. Ethane sales totaled 334,596 tons in 2025, an increase compared to the 309,894 tons sold in 2024, despite the impact of the flooding event. The dispatch of Liquefied Petroleum Gas was carried out from the Galván Plant, totaling 303,106 tons, compared to 331,751 tons in 2024. This distribution channel primarily supplies domestic demand and neighboring countries, while enhancing operating margins and expanding the customer base. Natural Gas Liquids exports recorded U.S.$ 201 million in revenues, representing 44% of segment sales and 41% of commercialized volumes. For natural gasoline, exports in 2025 were made under a two-year contract with Trafigura, priced at international benchmarks minus a discount. In addition, TGS entered into a new contract with ATMI TotalEnergies (a subsidiary of TotalEnergies) from March 2026 to February 2028, improving the prevailing commercial terms. Non-Regulated TGS’s Segment: Midstream and Other Services The midstream segment is not subject to ENARGAS regulation. The midstream segment includes gas collection, treatment, and compression services, with a focus on Vaca Muerta, and INTEGRA’s services, including the operation and maintenance of third-party facilities, such as gas pipelines and plants. It also includes telecommunications, provided by the subsidiary Telcosur. 63 Table of Contents In 2025, the segment’s revenues were U.S.$ 244 million, 21% of TGS’s total, an 18% increase compared to 2024, mainly due to increased natural gas volumes transported and conditioned in Vaca Muerta, in line with the growth from non-conventional production. Since 2018, TGS has focused on being a leading provider of integrated services and a key player in the country’s energy development, having invested more than U.S.$ 700 million in midstream infrastructure, a 183-kilometer gas pipeline network crossing multiple hydrocarbon blocks, and a gas conditioning plant in Tratayén that allows entry into the regulated transportation systems. During 2024 and part of 2025, TGS expanded the Tratayén plant’s capacity from 5.4 to 28 million m3 per day, with an approximate U.S.$ 350 million investment. Works consisted of installing two plants, each with a capacity of 6.6 million m3 per day, inaugurated in November 2024 and February 2025, respectively. This expansion enabled TGS to support production growth and capture higher processing volumes. Likewise, in 2025, TGS continued with engineering and economic-financial feasibility studies to expand the Tratayén plant. The project contemplates expanding processing capacity, adding NGL extraction, constructing a multiproduct pipeline to evacuate NGL, and developing new fractionation, storage, and dispatch facilities in Bahía Blanca. This project aims to anticipate the growing infrastructure demand driven by rising gas production. In telecommunications, Telcosur renewed and entered into new agreements with strategic customers in 2025, securing new accounts in key segments, thereby strengthening its presence and diversifying its revenue streams. TGS INTEGRA is the business unit that brings together all support services offered by TGS to the energy market, from third-party pipelines and plants’ operation and maintenance to the execution of minor works and pipeline repair works, scraper passage assistance, meter calibration, hydrocarbon sample analysis, turbines and compressors’ overhaul, among others. In 2025, hot-tap, integrity, engineering and operation, and maintenance services for the GPM were awarded. In addition, TGS INTEGRA installed a metering station on the Juana Azurduy Integration Gas Pipeline, a key piece of infrastructure to enable natural gas exports from Argentina to Bolivia and the region. Our Interest in Transener Transener is the leading company in Argentina’s utility service of high voltage electric energy transmission. It holds a concession over 15,456 km of transmission lines and 61 transforming stations, directly operating 86% of the country’s high-voltage lines. In turn, its controlled subsidiary Transba is in charge of the concession of 6,989 km of transmission lines and 116 transforming stations, the Main Distribution Transmission System of the Province of Buenos Aires. Transener also generates additional revenues from, among others, the operation and maintenance of lines and services provided to third parties. As of the date of this report, Pampa holds a 26.3% stake in Transener. The remaining capital stock is currently held by ENARSA and minority public shareholders as Transener’s Class B common shares are listed on the BASE. In July 2025, the Argentine government, through the Ministry of Economy, formally launched a national and international public tender process for the sale of the equity interest held by ENARSA in CITELEC. The process was initiated pursuant to the Ministry of Economy Resolution No. 1050/25 within the framework established by the Bases Law and Decree No. 286/25, which authorized the privatization of ENARSA through the divestiture of its business units. The process is being coordinated by the Agency for the Transformation of Public Enterprises, acting as the temporary executing authority. The award date is set to be on April 14, 2026. Transener was privatized in July 1993, when CITELEC was awarded the Argentine Government’s controlling stake in Transener. On August 5, 1997, Transener acquired 90% of Transba’s capital stock, when the Province of Buenos Aires privatized the company’s capital stock. 64 Table of Contents Operation and Maintenance The extra high voltage power transmission grid, operated and maintained by Transener, faces increasing demands year after year. On February 10, 2025, demand reached a new all-time high of 30,257 MW, exceeding by 2% the peak recorded in 2024. Despite the high demands, at the end of 2025, 0.42 failures per 100 km of line were recorded, a service quality consistent with accepted international parameters for companies operating and maintaining extra high voltage transmission systems. Annual revenues generated by this segment amounted to U.S.$ 362 million, representing 92% of Transener’s total revenues, a 24% increase when compared to 2024, explained by tariff normalization after the five-year tariff review approval in May 2025. On December 23, 2025, ENRE Resolution 811/25 approved the assignment of the rights and obligations under the COM Agreement for the Choele Choel – Puerto Madryn Interconnection from INTESAR to Transener, establishing remuneration for operation and maintenance per the applicable hourly rates. Business Development Annual revenues generated by this segment amounted to U.S.$ 32 million, representing 8% of Transener’s total revenues, a 15% decrease compared to 2024. Engineering services, works and maintenance Transener prioritizes projects that leverage its competitive advantages, with a growing focus on renewable energy and mining. In 2025, in addition to providing engineering consultancy for transforming stations in new wind farms, Transener expanded its services to include grid access, feasibility and electrical studies, basic engineering, and preparation of technical specifications for budget works. Since the beginning, Transener has been committed to operating, maintaining and providing specialized transmission services to private customers, either for exclusive use or linked to utilities, such as independent carriers. Its activities include transformer and bushing replacement, oil analysis, specialized diagnostics, fiber-optic repair, electric and magnetic field measurements, implementation of automated systems, and maintenance of lines and transformer stations, among other services. Transener has maintained a fair and transparent remuneration policy, with most contracts being continually renewed, reflecting the quality of the service and its customers’ satisfaction. Communications In 2025, Transener continued to offer infrastructure services to communication companies, including assigning dark fiber in its grid and renting space in microwave stations and their antenna-supporting structures. The increasing demand for these services has supported revenue growth, reflecting higher service volumes and stronger commercial conditions. Transener continues to provide specialized support for WEM agents’ operational communications and data transmission. VMOS On December 13, 2024, we confirmed our participation in the “Vaca Muerta Oil Sur Project” as shareholder of VMOS along with YPF, Vista Energy Argentina S.A.U., and Pan American Sur S.A., Pluspetrol S.A., Tecpetrol S.A., Shell Argentina S.A. and Chevron Argentina S.R.L. as Class A shareholders and Gas y Petróleo del Neuquén S.A. as Class B shareholder. We currently hold a 10.2% stake in VMOS, which may vary depending on the entry of other shareholders into the Project. VMOS is developing an investment project consisting of the construction, development, and operation of a pipeline approximately 437 km in length, running from Allen to Punta Colorada in the Province of Río Negro. The project will include a loading and unloading terminal with interconnected monobuoys, a tank farm, and ancillary facilities associated with these assets to export crude oil and liquids via very large crude carriers, known as VLCCs. The project will demand an estimated investment of U.S.$3 billion, funded through shareholders’ contributions and external financing. Pampa has secured a take-or-pay transportation contract for 50 kbpd, including storage and dispatch capacity. On November 15, 2024, VMOS submitted an application to join the RIGI, in accordance with the Bases Law and Regulatory Decree No. 749/24, as amended or supplemented from time to time, to be considered a Strategic Long-Term Export Project. Such application was approved on March 20, 2025 by the Ministry of Economy’s Resolution Nº 302/25. 65 Table of Contents VMOS will streamline crude oil evacuation and exports from the Vaca Muerta formation, and specifically, for us, from the Rincón de Aranda block, reduce logistics costs, open new markets for Argentine oil, increase foreign currency inflows, create employment opportunities and expand our firm transportation capacity. Oldelval As of December 31, 2025, Pampa holds a 2.1% direct interest in Oldelval, a company engaged in the operation of main oil pipelines that connect the Neuquina Basin to the Bahía Blanca harbor. The pipeline includes the system from the Comahue area to Allen, and the Allen-Puerto Rosales oil pipeline, easing oil exports and supplying the Plaza Huincul and Luján de Cuyo distilleries along the way. In 2025, the total transported volume averaged 70,644 m3, equivalent to 162.2 million bbl per day on an annualized basis, a 27% increase compared to 2024, mainly explained by the commissioning of Duplicar, a new 525-kilometer oil pipeline that passes through Río Negro, La Pampa and Buenos Aires, and a new terminal station in Puerto Rosales. The project increased oil transport capacity by 50,000 m3 per day and demanded a total investment of U.S.$ 1.4 million. The works ended on March 15, 2025, and Pampa holds 6,302 bpd of transport capacity. Transportation from Allen to Puerto Rosales reached 66,139 m3 per day on average. Refineries located in Neuquén and Mendoza received an average of 1,071 m3 per day and 3,434 m3, respectively. As of the end of 2025, the transportation capacity was 86,000 m3 without drag-reducing agents and 98,000 m3 per day with their use for the entire transportation system, consolidating its position as a critical infrastructure for the growth Vaca Muerta’s production. Enecor Pampa holds a 70% interest in Enecor, an independent power transportation company which provides operation and maintenance services, by subcontracting Transener, for 21 km of 132 kV double-triad electricity lines from the Paso de la Patria transforming station, in the Province of Corrientes. It is under a 95-year concession, which expires in 2088. Refinor We held a 28.5% interest in Refinor, whose other shareholders were YPF (50%) and Pluspetrol S.A. (21.5%). Refinor is engaged in crude oil refining, natural gas processing, product transportation, marketing and sales. On September 15, 2022, Pampa and Pluspetrol S.A. entered into an agreement with Hidrocarburos del Norte S.A. in order to sell their interest in Refinor that represented 50% of the outstanding capital stock and voting power of such company, and 100% of its Class A shares. The purchase price for the shares owned by us was U.S.$ 5.7 million, and the buyer paid 30% of such price at closing, and the remaining 70% balance was to be paid 12 months after closing. On December 22, 2023, we signed an amendment to the original agreement regarding the payment of the pending balance. On October 28, 2025, Hidrocarburos del Norte S.A. transferred all its shares in Refinor to YPF for a price of U.S.$ 25 million. In accordance with the purchase and sale agreement, in the event of a sale of the acquired interest to a third party, Hidrocarburos del Norte S.A. was required to apply any amount received for such transaction to immediately cancel in a single payment the amount due. Accordingly, in November 2025, the pending balance of U.S.$ 0.6 million was paid to Pampa. 66 Table of Contents Ecuador Oleoducto de Crudos Pesados In 2001, the Ecuadorian government signed with OCP S.A., OCP Ltd. and its shareholders an agreement for the “Construction and Operation of the Heavy Crude Oil Pipeline and Hydrocarbons Transportation Public Service” (the “Construction and Operation Agreement”) granting the rights to build and operate for a 20-year term a 503 km-long pipeline that runs from the northeastern region of Ecuador to the Balao distribution terminal on the Pacific Ocean coast. OCP S.A. operates the main private oil pipeline in Ecuador. The oil pipeline has a transportation capacity of approximately 450,000 barrels per day. The construction of the oil pipeline was completed and began its operations in 2003. On August 30, 2024, we acquired 36% of OCP Ltd., in which we already held 64% of the capital, for a price of U.S.$ 23 million, thereby increasing our indirect stake to 100%. As a result, we indirectly gained control of 100% of OCP S.A. The expiration of the pipeline concession was initially scheduled for January 20, 2024. However, successive extensions of the concession term were granted by the Ministry of Energy and Mines of Ecuador during 2024 —which extended the term first until July 31, 2024, then until August 19, 2024 and lastly until November 30, 2024, and on that date, all shares of OCP S.A. were transferred and delivered to the Ecuadorian State at no cost, along with the titles and rights to the pipeline’s assets, all in accordance with the pipeline concession contract. In compliance with the provisions of the Construction and Operation Agreement, OCP Ltd. arranged for OCP S.A. to provide to the Ministry of Energy and Mines of Ecuador with an Operational Guarantee and an Environmental Guarantee, each for the sum of U.S.$ 50,000,000, which would remain in force during the operational period until the ninetieth day following the expiration or termination of the Construction and Operation Agreement subject, among other conditions, to the non-existence of claims under such guarantees. Accordingly, on March 1, 2025 such guarantees should have been considered extinguished in accordance with their terms, as 90 days had elapsed since the termination of the Concession and the Construction and Operation Agreement. Notwithstanding the above, Citibank Ecuador had unjustifiably stated that OCP S.A. did not comply with certain formalities required for the guarantees to expire 90 days after the termination of the Construction and Operation Contract. On April 11, 2025, OCP Ltd. initiated an arbitration proceeding before the International Centre for Settlement of Investment Disputes in order to obtain the effective release of the Environmental and Operational Guarantees and to be compensated for the damages and losses caused by the lack of such release; and alternatively, to receive from the Ecuadorian State an amount equal to the Environmental and Operational Guarantees in addition to all damages and losses caused by Ecuadorian State actions, plus interest. On October 28, 2025, the Ecuadorian State instructed Citibank Ecuador to proceed with the guarantees release, which became no longer valid as of that day under the terms of the contract. On November 3, 2025, Citibank NY proceeded with the release of the guaranteed deposits funds. On November 14, 2025, OCP Ltd requested the discontinuance of the arbitration before the Arbitral Tribunal, and on December 15, 2025, the Ecuador State consented thereto. On January 23, 2026, the Arbitral Tribunal issued the order taking note of the discontinuance and, as a result, the arbitration proceedings were terminated. Incentive Regime for Large Investments The Bases Law and Decree No. 749/24 creates and regulates the RIGI, which establishes a specific promotion and incentive framework for certain investments made by Project Holding Vehicles (“VPU”) that meet the stipulated requirements. One of the main objectives of this regime is to encourage both domestic and foreign “Large Investments” in the country, strengthen competitiveness and economic sector development, increase exports, foster job creation, and ensure a predictable and stable environment for investors. 67 Table of Contents The RIGI is designed for projects in sectors such as forestry industry, tourism, infrastructure, mining, technology, steel industry, energy, oil, and gas, provided they comply with the regime’s requirements. VPUs have a two-year period from the effective date of the Bases Law to adhere to the regime. On February 19, 2026, pursuant to DNU No. 105/26, the deadline to join the RIGI was extended until July 8, 2027, and the exploration and production of liquid and gaseous hydrocarbons in greenfield blocks was incorporated into the regime. These activities may only be included in new projects, as well as the construction of associated treatment, storage, and transportation infrastructure. In addition, a minimum investment amount was set at U.S.$ 600 million for onshore developments and U.S.$ 200 million for offshore projects. Requirements for a “Large Investment” under RIGI To qualify as a “Large Investment” under RIGI, a project must meet the following conditions: - Minimum Investment Amount: The project must meet a minimum investment threshold in eligible assets, varying by sector but ranging from U.S.$ 200 million to U.S.$ 900 million. - Investment Execution Timeline: Within the first two years after the approval of the investment plan, the project must execute at least 40% of the minimum investment amount, with a variable percentage allocated for each of those years. - Long-Term Nature: A project is considered long-term if the present value of its expected cash flow, relative to planned capital investments during the first three years, does not exceed 30%. Special Regime for “Strategic Long-Term Export Projects” The RIGI also includes a specific framework for “Strategic Long-Term Export Projects”, aimed at positioning Argentina as a long-term supplier in international markets where it currently holds little presence. These projects require a minimum investment of U.S.$ 2 billion, which may be executed in U.S.$ 1 billion stages. While they receive special benefits, they must also meet the general requirements of the RIGI. Tax, Customs, and Foreign Exchange Incentives Projects qualifying under the RIGI will benefit from a range of tax, customs, and foreign exchange incentives, including: - A reduced corporate income tax rate of 25% for VPUs. - The ability for VPUs to pay VAT (including withholdings) on purchases, construction of fixed assets, or infrastructure investments to suppliers or ARCA (formerly AFIP) using Tax Credit Certificates. - The option to fully offset the Tax on Bank Debits and Credits against corporate income tax. - Exemption from export duties starting three years after the project adherence. - Partial and progressive exemption from the requirement to settle foreign currency earnings from exports in the local exchange market: (i) in the first two years, 20% of their foreign currency earnings; (ii) in the third year, the percentage increases to 40%; and (iii) by the fourth year onwards, it reaches 100% of their foreign currency earnings. Current Project Applications by Pampa and its affiliates under RIGI As mentioned, the Vaca Muerta Oil Sur Project, the FLNG Project and the RDA Project have applied for RIGI under the Strategic Long-Term Export Projects category. Vaca Muerta Oil Sur Project RIGI’s application was approved on March 20, 2025 by the Ministry of Economy’s Resolution Nº 302/25. As for the FLNG Project RIGI’s application was approved on April 29, 2025 by the Ministry of Economy’s Resolution Nº 559/25. As of the date of this report, the approval by the relevant authorities for the RDA Project RIGI’s application is pending. 68 Table of Contents Quality, Health, Safety and Environment We are committed to developing our businesses with the highest quality, safety, environmental and labor health standards for personal welfare, environmental care and energy efficiency. We want to meet current needs without compromising future generations, pursuing sustainable development. Our QHSE Policy incorporates essential principles for health and safety, environmental protection, efficient use of energy and natural resources, and our operations’ reliability. This approach includes ten management principles serving as a guide for agile and effective implementation. In 2025, we continued working on the Cultural Evolution Program in QHSE, complementing local initiatives and reinforcing operational excellence. The program had 9 initiatives, achieving more than 90% progress. We conducted an internal engagement survey that showed 98% favorability in health, safety, and environmental matters, exceeding 87% recorded in 2023. These results reflect the importance that Pampa places on the well-being of its people, environmental management, and sustainability. Management quality We further our management quality using ISO standards and the Argentine national quality prize model, seeking continuous improvement. We apply methodologies such as the operational risk management matrix (RMM), the QHSE performance cycle, certified management systems administration and daily management quality. We apply the RMM to reduce the risks inherent in our operations, in cycles. In 2025, we conducted the third cycle, increasing requirements and achieving a 30% reduction in major risks compared to 2023. Major risks associated with preventive management decreased from 13.2% to 9.8%. We maintained ISO 9001 (quality management), 14001 (environmental management) and 45001 (occupational health and safety) certifications in all businesses and ISO 55001 (asset management) in all power plants. During 2025, we expanded the ISO 9001 and ISO 45001 certifications to the PEPEs and conducted the external audit of 2024 emissions management at CTLL following ISO 14064-1 (Greenhouse Gases), receiving a positive recommendation. Finally, since 2013, outstanding improvement practices at Pampa have been selected to participate in the annual national meeting of the Argentine Society for Continuous Improvement (Sociedad Argentina Pro-Mejoramiento Continuo, SAMECO) to share our experiences and knowledge. In the 2025 annual meeting, we presented the work: “Electrical Safety Program” by E&P and “Cooling Tower Failure Detection” by CTEB. Health and Safety In 2025, we consolidated and expanded our strategic safety and health actions, strengthening the preventive culture and continuous improvement. Regarding management and digitalization, we implemented digital work permits that unify permit management, safe task analysis, and risk certificates, enhancing operational safety and day-to-day processes. For 2026, an offline version is planned that will integrate a single tool across the entire Company. We developed the Preventive Behavior Observations (OPC) dashboard in Power BI, enabling the analysis and identification of recorded OPCs and events that require a specific approach. In addition, we completed the communication campaign for the Golden Rules to reduce the risk of serious and/or fatal accidents. In 2026, theoretical and practical training will be further strengthened. In industrial hygiene, together with the Occupational Risk Insurance provider (ART), we assessed noise as a risk agent and implemented a Hearing Conservation Program to prevent noise-induced hearing loss. We continued with the Surveillance System for Carcinogenic Substances and Compounds established by the Superintendency of Occupational Risks. Environment We have been members of the United Nations Global Compact since 2019. We have participated again in the “Connecting Companies with the Sustainable Development Goals” program, organized by the Consejo Empresario Argentino para el Desarrollo Sostenible (“CEADS”) and Ernst & Young Argentina. We presented several initiatives contributing to Sustainable Development Goals (“SDG”) 3, 6, 7, 12, and 15. 69 Table of Contents In 2025, we conducted CO2-emission-reduction studies on venting and carbon capture in our reservoirs, as well as leak detection using infrared cameras for rapid maintenance. In addition, under the ISO 14064-1 requirements, we began developing a carbon-neutrality strategy and continued work on the scope 3 emissions inventory, including emissions from waste generated by our operations, business travel, and employee commuting. We also completed a current and potential water risk assessment at each of our assets and developed the biodiversity baseline for CTB, CTIW, CTEB, CTGEBA and CTPP. Throughout the year, we conducted periodic drills to ensure a rapid and effective response to emergencies, aligned all sites with the corporate standard for contingency and operations management, carried out on-site risk assessments, and continued training in the incident command system. Occupational Health Our health management prioritizes risk reduction and our teammates’ overall well-being. Regarding well-being and health promotion, we implemented preventive programs that included 1,180 immunizations, 20 bromatological assessments of cafeterias, over 900 hours of training in first aid and CPR, and nutrition consulting and training. Within the framework of the Alcohol, Drugs, and Psychoactive Substances Policy, we conducted 9,195 tests, with 117 cases detected among contractors, reinforcing a prevention culture. In addition, we carried out good manufacturing practice audits, microbiological evaluations of food products, and supplier oversight, ensuring food safety and quality across the Company. Corporate Responsibility Social investment is part of a strategic model for building relationships with our stakeholders, led jointly with the Foundation. With a solid commitment to society, we implement programs and actions geared toward improving individuals’ quality of life, strengthening education and enhancing the capabilities of the institutions in the communities where we operate. We have framed our social investment strategy on three axes: • Education: as a basis for growth and personal autonomy, essential for professional training; • Employability: a driver for the development of individuals and communities; and • Social inclusion: allows us to bring opportunities and resources to individuals and groups under vulnerable situations, promoting equal opportunities. Education Over 60% of the social investment budget was distributed to education-related initiatives. We supported educational pathways to promote completion of technical secondary education and facilitate the transition to university and tertiary studies. Scholarship recipients receive not only financial support, but also mentoring, training, field visits, and opportunities to engage with formal work environments, enabling them to broaden their professional outlook. In 2025, we supported 904 students, including 715 in the last three years of technical secondary schools and 189 at university and tertiary levels. As of December 2025, 254 secondary school students and 40 university students had graduated, mainly in fields related to our businesses, such as engineering. In addition, we launched a graduates’ network through the Conexión Joven project in partnership with Empujar, which supported 133 young people in their first exposure to the work environment and enabled 22 to continue and graduate from a second stage of intensive training with on-site practical experience. In terms of teacher training, we seek to strengthen educational quality and encourage the adoption of new teaching methodologies. In 2025, we implemented six initiatives addressing topics such as energy, professional practice programs, 3D design, and emotional management. A total of 891 teachers and school leaders from 269 schools in Neuquén, Mendoza, Salta, La Rioja, Santa Fe, and Buenos Aires participated. Labor placement training In 2025, more than 1,900 high school, college and university students took part in professionalizing practices, first-job workshops and training programs that strengthened their technical and personal skills, thus promoting their employability. A total of 730 professional training placements and workplace exposure experiences were carried out for students in the final years of technical and general secondary schools. Of these, 20% were carried out at Pampa’s assets, where 145 students from 23 schools completed nearly 15,000 hours of theoretical and practical training. 70 Table of Contents In coordination with strategic partners, we conducted 585 professionalizing practices in different environments, together with institutions such as UTN at San Rafael and Neuquén, UFLO, Siemens Foundation, 500RPM, and MSI. At the university and college levels, supervised professional internships and traineeships were facilitated for 3 scholarship students from Salta and Buenos Aires. We also promoted meetings with companies in collaboration with AcercaRSE, participation in sector-specific fairs alongside IAPG, and technical and interpersonal skills workshops delivered by professionals from Pampa and its subsidiaries. In addition, we implemented the Centro Pescar program for 56 students, which combined full-stack web development training with J.P. Morgan and Fundación Pescar, and technical support training delivered by Pampa’s IT team and Novatium, with the support of the L’Oréal and Karuna Foundations. In 2025, we offered vocational training courses with strategic partners. In Bahía Blanca, 69 people graduated from Buen Trabajo program, in partnership with Dow, Viterra, UTN Bahía Blanca, and the local municipality. In La Rioja, over 50 people completed two electrical training courses in alliance with Fundación VOZ, UNLaR, and the Municipality of Aimogasta. In Piedra del Águila, 26 people completed programs in water, gas, and sewage services, with Fundación Potenciar and the local municipality. To promote labor inclusion of people with disabilities, we granted scholarships to students from Fundación Baccigalupo to train as sports assistants. We continued providing supplies to the Accervil Protected Workshop, which employs people with motor disabilities, as well as to the Alamesa project, promoting inclusion through gastronomy. Social and community inclusion We continued developing productive activities with social and environmental impact through the Responsible Inclusive Purchasing Program. In 2025, we held the second business round and trade fairs in Salta, Mendoza, Santa Fe, Neuquén, and Buenos Aires, with direct impact on 130 people. We supported Poteco, a campaign promoting the circular economy through plastic recycling for tiles to schools and sports clubs. Regarding community partnerships, we strengthened our work with the Guaraní community of Piquirenda de Fátima in Salta through gender-focused workshops for children, teenagers, and families. With Fundación Solar Inti, we expanded the eco-efficient cookstoves project, reaching 86 families. Vocational training courses, health and nutrition talks, entrepreneurship spaces, productive fairs, and nutritional, social, and psychological aid were delivered with Pata Pila. We participated in public-private coordination initiatives, such as the Public-Private Laboratory of the Group of Foundations and Companies (GDFE) and Red Bahía in Bahía Blanca. In Neuquén, we developed processes to strengthen the social ecosystem and community planning. Professional volunteering is a central pillar of our social impact strategy. We had 10 active volunteer committees, with 119 employees who defined action plans with local partners. In 2025, 25 initiatives were promoted, with over 1,500 participations and 11,000 hours volunteered. Professional volunteering is one of the key focus areas to make our employees’ technical skills and expertise available to the community. Through initiatives in health, safety, employability, and education, we promote capacity, collaboration, and transparency development, and strengthen community trust. In 2025, volunteers from Buenos Aires, Mendoza, Salta, Santa Fe, La Rioja, and Neuquén participated. We conducted solidarity campaigns: a blood donation campaign; the “Empezamos con Todo” campaign to deliver school supplies to students; and the “Nos Juntamos Contra el Frío” campaign to provide warm clothing and food to schools, community kitchens, and senior centers. During Children’s Month, we organized recreational activities, and through the Christmas Eve in Solidarity initiative, 281 employees contributed over 600 hours to assemble 1,300 food boxes, which were distributed to 36 neighboring organizations. Finally, we developed social and community initiatives and projects focused on tangible improvements in the communities where we operate, including renovations in schools in Neuquén and Ingeniero White; supporting a rural-based family enterprise in Neuquén; the “Tejiendo Lazos” community initiative, to produce warm clothing year-round; and TEA Project to provide practical tools for educators. 71 Table of Contents Capital Expenditures For a discussion of our capital expenditures, see “Item 5. Operating and Financial Review and Prospects. Capital Expenditures”. Seasonality See “Item 5. Operating and Financial Review and Prospects-Factors Affecting Our Results of Operations-Electricity Demand and Supply”. Property, Plant and Equipment Most of our property is located in Argentina, mainly consisting of oil and gas assets that allow us to explore and exploit oil and gas reserves (mainly wells and drilling equipment), power plants (thermal plants, hydroelectric complexes and wind farms) and corporate office buildings. Insurance In our oil and gas business, we carry full insurance, including business interruption and general liability insurance. As of December 31, 2025, the total oil and gas assets covered under these insurance policies are valued at U.S.$1,333 million. In our generation business, we carry full insurance for each of our generation assets, including business interruption and general liability insurance. As of December 31, 2025, the total generation assets covered under these policies are valued at U.S.$7,327 million. In our petrochemical business and distribution business, we also carry full insurance, including business interruption and general liability insurance. As of December 31, 2025, the total assets covered under insurance policies are valued at U.S.$1,267 million. Patents and Trademarks None of our commercial activities are conducted under licenses granted by third parties. 72 Table of Contents THE ARGENTINE ENERGY SECTOR OIL & GAS REGULATORY FRAMEWORK The Argentine Hydrocarbons Law In 2014, Law No. 27,007 amended the Hydrocarbons Law No. 17,319, introducing new drilling techniques in the industry and changes to terms and extensions of exploration permits and exploitation concessions, levies and royalty rates, concepts for on- and off-shore unconventional exploration and exploitation, and a promotion regime pursuant to Decree No. 929/13, among others. Later, the Bases Law introduced substantial amendments to Hydrocarbons Law No. 17,319, with the following main objectives: maximization of revenues from the exploitation of hydrocarbon resources, free export (subject to the non-objection of the enforcement authority), hydrocarbon processing activities, among others. Unconventional Hydrocarbons Exploitation The Law conferred legal status to the concept of “Unconventional Hydrocarbon Exploitation Concession” (“CENCH”) created by Decree No. 929/13. The term unconventional hydrocarbon exploitation is defined as the extraction of liquid and/or gaseous hydrocarbons by unconventional stimulation techniques applied in reservoirs situated in geological formations of schist rock or slate (shale gas or shale oil), tight sandstone (tight sands, tight gas, tight oil), coal bed methane and/or deposits characterized, in general, by the presence of low permeability rocks. Holders of exploration permits and/or hydrocarbon exploitation concessions will be entitled to request a CENCH to the enforcement authority pursuant to the following terms: · The exploitation concessionaire may request, within its block, the subdivision of the existing block into new unconventional hydrocarbon exploitation blocks and the granting of a CENCH. Such request will be based on the development of a pilot plan aiming at the commercial exploitation of the discovered reservoir pursuant to acceptable technical and economic criteria and may only be made until December 31, 2028. After this date, no further applications for conversion will be accepted. · Holders of a CENCH that are also holders of a preexisting and adjacent exploitation concession may request the unification of both blocks as a single CENCH, provided they duly demonstrate the geological continuity of these blocks. Such request should be based on the development of a pilot plan. Terms for Exploitation Concessions and Permits The terms for the exploration permits will be established in each tender issued by the enforcement authority according to the exploration’s purpose (conventional or unconventional): i. Conventional exploration: the basic term is divided into two periods of up to three years each, plus an optional extension of up to five years. In this way, the maximum extension for exploration permits is reduced from fourteen to eleven years; ii. Unconventional exploration: the basic term is divided into two periods of four years each, plus an optional extension of up to five years, that is, up to a maximum of 13 years; and iii. On and off-shore exploration: the basic term is divided into two periods of three years each, plus an optional extension of one year each. Upon the expiration of the first period of the basic term, the permit holder will decide whether to continue exploring the block or to transfer it back in whole to the Government. The whole originally-granted block may be kept provided the obligations arising from the permit have been appropriately met. Upon the expiration of the basic term, the holder of the exploration permit will revert the whole block, unless it exercises its right to extend the period, in which case the reversion will be limited to 50% of the remaining block. Exploitation concessions will be granted for the following terms, which will be computed as of the granting resolution’s date: i. Conventional exploitation concession: 25 years; 73 Table of Contents ii. Unconventional exploitation concession: 35 years; and iii. Continental shelf and off-shore exploitation concession: 30 years. Exploitation concessions granted prior to the entry into force of the Bases Law will continue to be governed, until their expiration, by the conditions established by the existing legal framework. At the end of the term of the exploitation concessions, they may not be awarded without a new bidding procedure. For new concessions, the granting authority will be able to set different terms, up to a maximum of 10 years, on the basis of well-founded and motivated reasons justifying the deviation from the terms laid down. The possibility of requesting an extension of the 10-year period is removed. Awarding of Areas Law No. 17,319 (amended by Law No. 27,007 and the Bases Law) proposes drafting of a standard bid form that will be jointly prepared by the SE and the provincial authorities. The model bidding documents will include the conditions and warranties to be met by the bid, as well as the minimum necessary investments to be made by the successful bidder. Likewise, the model bidding documents will establish mechanisms for adjusting the royalties deemed appropriate, which may take into account, among other variables, the total investments made, the revenues generated and the operating costs incurred. The evaluation of bids will take into account the total value of the project, including the royalties offered, the investments committed and the associated production, as specified in the respective bid documents. Bidders will compete on the royalty value based on a fifteen percent (15%) base value that will apply to the Project in each of its phases. The royalty to be offered will be identified as fifteen percent (15%) + “X”. The term “X” is defined as a percentage (%) at the sole discretion of the Bidder, which may be negative. · Levies and Royalties - Levy Law No. 17,319 (amended by laws No 27,007 and the Bases Law) set the levy values per km2 or fraction to be paid annually and in advance by the permit holder, based on the average price of a barrel of oil, adjusted annually to the Brent price: a) Basic Term: 1st period: the equivalent in Argentine Pesos of zero point fifty (0.50) barrels of oil per square kilometer. 2nd Period: the equivalent in Argentine Pesos of two (2) barrels of oil per square kilometer. b) Extension: the equivalent in Argentine Pesos of fifteen (15) barrels of oil per square kilometer. Royalties Royalties are defined as the only revenue the jurisdictions holding title to the hydrocarbons will collect, in their capacity as grantors, and are set at a percentage determined in the bidding process. For contracts in force at the time of enactment of the Bases Law, the royalty will continue to be the one agreed with the PEN or the Provincial Executive Branch, as the case may be, which were established between 12% and 15%. The PEN or the Provincial Executive Branch, may reduce royalties by up to 5%, taking into account the productivity, conditions and location of the wells. 74 Table of Contents - Transportation Authorization The Bases Law substitutes transport concessions set forth in Law No. 17,319 by transport authorizations granted and extended for the same term granted for the originating exploitation concession. After these terms expire, the facilities will be transferred back to the Federal or Provincial Government, as applicable, by law and without any charges or encumbrances. Transport concessions granted prior to the entry into force of the Bases Law shall be subject to the terms and conditions given at the time they were granted. - Processing permits The Bases Law includes hydrocarbon processing activities within the framework of Law No. 17,319. This allows the PEN or the Provincial Executive Branch to grant permits for the processing of hydrocarbons and their derivatives, the construction and operation of conditioning plants, hydrocarbon separation plants, natural gas liquefaction plants and other necessary facilities and ancillary equipment, without these necessarily being linked to an exploitation concession. Operators of hydrocarbon processing projects and/or facilities may request an authorization from the authority to transport hydrocarbons and/or their derivatives to their industrialization facilities and from such facilities to the centers and/or facilities for further industrialization or commercialization processes. Such authorizations shall not be subject to any time limit. Pursuant to Decree No. 1,057/24, published on November 29, 2024, it will not be mandatory for operators of hydrocarbon processing projects and/or facilities authorized prior to the Bases Law to apply for the conversion of the authorizations and/or permits granted under the new scheme of such law. - Authorizations for underground storage of natural gas The Bases Law incorporates into Law No. 17,319 the possibility for the PEN to grant authorizations for the underground storage of natural gas in natural reservoirs of depleted hydrocarbons to any party that: (i) meets the requirements of technical experience and financial capacity; (ii) has the consent of the holder of the exploration permit and/or the exploitation concession in whose area the natural reservoir to be used for storage is located; and (iii) undertakes to build, at its own cost and risk, the necessary facilities to carry out the storage activity. Such authorizations shall not be limited in time. Likewise, the holder of an underground gas storage authorization may apply for an authorization to transport hydrocarbons to their storage facilities and from there to the transport system, which shall also not be subject to a time limit. The granting of these authorizations is not subject to the payment of operating bonuses and no similar payments may be imposed for the granting of these authorizations through provincial regulations. Furthermore, the stored natural gas will only pay royalties at the time of its first commercialization. - Export / Import of hydrocarbons The Bases Law, within the framework of Law No. 17,319, establishes that the international trade of hydrocarbons shall be free and subject to the no objection of the Secretary of Energy. Licensees, concessionaires, refiners and/or traders will be able to freely export hydrocarbons and/or their derivatives under conditions to be regulated. However, the objection by the Secretary of Energy, which can only be exercised within 30 administrative working days of the exercise of the right to export, may be based on technical or economic reasons relating to the security of supply. Decree No. 1,057/24, which regulates the Bases Law, establishes that the Secretary of Energy shall make the corresponding adjustments to all other regulations related to hydrocarbons and/or their derivatives, in particular to Resolutions of the former Secretary of Hydrocarbon Resources No. 241/17, SE No. 360/21, SE No. 175/23 and all other regulations related to the export of hydrocarbons and/or their derivatives. Regarding the export of liquid hydrocarbons, producers have been informed by the Note of the Subsecretary of Liquid Fuels NO-2024.135497092-APN-SSCL#MEC of December 10, 2024, that until the regulations on hydrocarbon exports are adapted, the authorization procedure provided for before the entry into force of the Bases Law will continue to apply. 75 Table of Contents - Uniform Legislation Law No. 27,007 provides for two types of non-binding commitments between the Federal Government and the provinces regarding tax and environmental issues: i. Environmental Legislation: Provides that the Federal Government and the provinces will seek to establish a uniform environmental legislation primarily aiming to apply the best environmental management practices to hydrocarbon exploration, exploitation and/or transportation with the purpose of furthering the development of the activity while properly protecting the environment. ii. Tax System: Provides that the Federal Government and the provinces will seek to adopt a uniform fiscal treatment encouraging the development of hydrocarbon activities in their corresponding territories in adherence with the following guidelines: · The gross receipts tax rate applicable to the extraction of hydrocarbons will not exceed 3%; · The freezing of the current stamp tax rate and the commitment not to charge with it any financial contracts executed in order to structure investment projects, guarantee and/or warrant investments; · The commitment by the provinces and its municipalities not to impose new taxes —or increase the existing ones— on permit and concession holders, except for service compensation rates, improvement contributions and general tax increases; and · The Bases Law empowers the PEN to elaborate, with the agreement of the provinces, a harmonized environmental legislation in order to comply with Law No. 27,007. Restrictions on the Reservation of Blocks to National or Provincial Government-Controlled Companies The amendment to the Hydrocarbons Law restricts the Federal Government and the provinces from reserving new blocks in the future in favor of public or mixed-capital companies or entities, irrespective of their legal form. However, contracts entered by local companies for the exploration and development of reserved blocks before this amendment are safeguarded. Regarding blocks that have already been reserved in favor of public companies and that have not yet been awarded under joint venture agreements with third parties, associative schemes may be used, in which case the participation of such companies during the development stage will be proportional to their investments. Thus, the “carry” system during the blocks’ development or exploitation stage has been eliminated. Such system has not been prohibited for the exploration stage. Conventional and Unconventional Hydrocarbon Investment Promotion Regime On July 11, 2013, the PEN issued Decree No. 929/13, which created the Investment Promotion Regime for the Exploitation of Hydrocarbons —both conventional and unconventional— to encourage investments and the concept of unconventional exploitation concession. Law No. 27,007 extended the benefits of the Promotion Regime to hydrocarbon projects involving a minimum U.S.$250 million foreign currency direct investment, assessed at the time the hydrocarbon exploitation investment project is presented, to be invested during its first three years. Before the amendment, the Promotion Regime benefits reached investment projects denominated in foreign currency for a minimum of U.S.$1,000 million amount during a term of five years. Holders of exploration permits and/or hydrocarbon exploitation concessions, and/or third parties associated and registered with the National Registry of Hydrocarbon Investments submitting this kind of project will enjoy, beginning in the third year of execution, the right to freely sell abroad 20% and 60% of the liquid and gaseous hydrocarbon production in the case of conventional and unconventional exploitation projects and offshore projects, respectively, with a 0% export duty, if applicable. Moreover, they will have free availability of 100% of the foreign currency derived from the exportation of these hydrocarbons, provided the applicable projects have involved a minimum of U.S.$250 million of foreign currency entering into the Argentine financial market. 76 Table of Contents During periods in which the national production of hydrocarbons is insufficient to meet domestic needs pursuant to Section 6 of the Hydrocarbons Law, those covered by the Promotion Regime will have, beginning in the third year following the execution of their respective investment projects, the right to obtain a price which shall not be lower than the reference export price (without computing the incidence of any applicable withholdings) from the exportable liquid and gaseous hydrocarbon percentage produced under such projects. According to these investment projects, Law No. 27,007 provides for two contributions payable to the producing provinces, where the investment project is developed: (i) 2.5% of the investment amount paid by the project holder, destined to corporate social responsibility projects; and (ii) an amount determined by the Hydrocarbon Investments Committee paid by the Federal Government, based on the size and scope of the investment project, destined to infrastructure projects. Regime for access to foreign currency for hydrocarbon exports By means of SE Resolution No. 808/23 (as amended by Resolution No. 827/23) issued on October 3, 2023, hydrocarbon exporters became eligible to settle 25% of their sales to the foreign market at the CCL exchange rate, while the remaining 75% continued to be settled in the MULC, at the official exchange rate. The objective of this scheme was to incentivize oil and gas exports and bolster the reserves of the BCRA. Furthermore, through the mentioned resolution, different tariff positions such as crude oil, petroleum oils, and gas were incorporated, in an extraordinary and transitory manner, into the Export Increase Program (PIE) established by Decree No. 576/22, reinstated by Decree No. 443/23, and extended by Decree No. 492/23. The settlements of export operations of goods, with export settlements dates between October 2, 2023 and October 20, 2023, inclusive, are covered by the referred program, provided that the effective export date of such goods is no later than November 30, 2023. Subsequently, on October 23, 2023, Decree No. 549/23 came into effect, allowing hydrocarbon exporters to settle 30% of their sales to the foreign market at the CCL exchange rate, while the remaining 70% continued to be settled at the official exchange rate. To qualify for the scheme, exports must be settled by November 17, 2023. Regulations Specifically Applicable to the Gas Market Plan Gas.Ar According to Decree No. 892/20, on November 16, 2020, the Plan Gas.Ar program was created to promote Argentine natural gas production, reduce and replace LNG and liquid fuels imports, provide supply chain predictability, and manage the impact of the cost of gas on the tariff of the priority demand. The on-shore production term is four years, with an additional four years for offshore production, beginning in January 2021. Beneficiaries of the Unconventional Plan Gas.Ar opting to participate in this program should first file their waiver. Tender methodology and purchasing conditions The SE instrumented a tender between producers as sellers, and CAMMESA, gas distributors and ENARSA (in the case of Patagonia, Malargüe and the Puna), as purchasers, for a total base volume of 70 million m3/day (67% for the Neuquina Basin), extendable for the winter period (May – September), with 100% daily DoP and 75% monthly ToP condition for CAMMESA and quarterly for gas distributors and ENARSA. The maximum base price for the Neuquina Basin to tender was U.S.$3.7/MBTU. Moreover, the awarded price will be adjusted by a 0.82 factor for the non-winter period, 1.25 for the winter period, and 1.30 for the additional volume during winter. The producer commits a minimum production per basin and per month beginning in January 2021 equivalent to the base injection (average between May and July 2020), and a maximum production lower than or equal to 70% of the production committed for the May – July 2021 period in the case of onshore production, and May - July 2020 for offshore production. Additionally, producers must submit an investment plan to maintain the committed production and a national added-value commitment providing the development of direct local, regional and national suppliers. 77 Table of Contents If the injection in the months of June, July and/or August is lower than that committed, the producer may offset the shortfall with: (i) own production from another basin or acquired from another signatory producer, as long as there is available transportation capacity; (ii) imports on its own account; (iii) a payment equivalent to 2 times the shortfall volume at the tendered price with a 1.25 adjustment factor. Moreover, participating producers may export on a firm basis, with a preferential order for those tendering lower prices, up to the aggregate volume of 11 million m3/day (64% Neuquina Basin) during the non-winter period, extendable to the winter period, provided there is an oversupply in a specific basin. Regarding the price payable, purchasers CAMMESA and ENARSA will make the payment at the price awarded under the Plan Gas.Ar call for tenders, whereas gas producers will be paid the amount established in the tariff scheme in force, and the difference in the awarded price will be compensated by the Argentine Government. According to the concession, this compensation will be subject to withholding according to the province and/or the Argentine Government’s royalties rate. As long as the producer submits the production’s affidavit within 30 days after the closing of the injection month, they will receive a provisional payment of 85% of the compensation net of royalties within the following 30 days, and the adjusted payment for the balance within 60 days as of the presentation of the affidavit certified by independent auditors, considering Banco Nación’s selling exchange rate on the last business day of the injection month. Upon adherence to the agreement assignments as provided in SE Resolution No. 606/25, the provisional monthly compensation percentage increases from 85% to 90%. Additionally, according to the Plan Gas.Ar framework, the Argentine Government created a guarantee system to secure compensation, notwithstanding other mechanisms, based on the recognition of fiscal credits, in accordance with the applicable legislation and as regulated by the enforcement authority and/or ARCA. Such mechanism was regulated by SE Resolution No. 125/21, which instrumented electronic certifications in foreign currency that producers may directly apply to fulfill fiscal liabilities in the Plan Gas.Ar default by the Argentine Government. Moreover, the SE will be empowered to make the awardees’ guarantee enforceable before the ARCA. The ARCA instruments said system on March 4, 2021. Finally, the BCRA should establish appropriate mechanisms to facilitate access to the MLC, as long as the funds have been admitted by the MLC and subsequently to the coming into effect of the DNU, and destined to the financing of projects under the Plan Gas.Ar. Tender award On December 15 and 29, 2020, the SE awarded 67.4 million m3/day of natural gas (55% of which was destined to power plants) at an average annual base price of U.S.$3.5/MBTU, as well as an additional volume of 3.6 million m3/day during the winter period at a price of U.S.$4.7/MBTU. Pampa was awarded a base volume of 4.9 million m3/day at U.S.$3.6/MBTU and an additional volume of 1.0 million m3/day during the winter period at a price of U.S.$4.7/MBTU. Moreover, Pampa was one of the three producers tendering additional volume during the winter period, being awarded 1 million m3/day for U.S.$4.68/MBTU. Out of the 4.9 million m3/day of the base tender, 56% will be destined to power plants and the balance to gas distributors or ENARSA. In contrast, the additional winter volume will be destined to gas distributors or ENARSA. Hence, Pampa achieved the highest growth in tendered production, with the winter peak injection 20% higher than average output between May and July 2020, with an approximate investment of U.S.$250 million during the four years of the Plan Gas.Ar. This winter volume is critical to support the highly seasonal gas demand, reduce gas imports and alternative fuels consumption, and moderate foreign currency reserves. On February 22, 2021, pursuant to SE Resolution No. 129/21, a second round to award additional winter gas volumes at Neuquina and Austral Basins was called, with a daily DoP between 75% and 100% for 2021 and 100% for 2022-2024, and 75% monthly ToP. The maximum bidding price was equivalent to the awarded price on the first round. Through SE Resolution No. 169/21, a total average volume of 3.3 million m3/day at U.S.$4.7/MBTU, is to be delivered as of June 2021. Pampa participated in said round, being awarded 0.8 million m3/day at U.S.$4.7/MBTU. Additionally, the awarded companies will have to enter into a contract with ENARSA. 78 Table of Contents On October 19, 2021, through SE Resolution No. 984/21, the third round to award a total amount of 6 million m3/day of natural gas corresponding was launched, 3 million m3/day at maximum price of U.S.$3.66/MBTU for the Neuquina Basin, 2 million m3/day at maximum price of U.S.$3.52/MBTU for the Austral Basin and 1 million m3/day at maximum price of U.S.$3.577/MBTU for the Northwest Basin. This round was valid from May 1, 2022, to December 31, 2024. On November 12, 2021, the SE awarded a total of 3 million m3/day, corresponding to the Neuquén Basin at U.S.$3.43/MBTU and the volumes of the Northwest and Austral Basins were declared void. Pampa was awarded a volume of 2 million m3/day at U.S.$3.347/MBTU. Additionally, the awarded companies are required to execute the contracts with ENARSA for the period of May to September and with CAMMESA for the period of October to April. Assurance Plan On November 3, 2022, Decree No. 730/22 (hereinafter, “Decree 730”) was published. Pursuant to such decree, the Plan Gas.Ar was modified and replaced by the “Plan to Assure and Reinforce the Federal Production of Hydrocarbons, Domestic Supply, Exports, Import Substitution and Transportation System Expansion for all Argentine Hydrocarbon Basins 2023-2028” (hereinafter, “Assurance Plan”). The main goals of the Assurance Plan are (i) to strengthen a flat basis of 70 MM m3/d corresponding to the volumes awarded in the Plan Gas.Ar rounds 1 and 3, excluding winter peaks and (ii) to make up a demand for incremental volumes that can be evacuated by using the new transportation capacity to be available upon the construction of GPM (Transport.Ar Program, Resolution No. 67/22). Decree 730 establishes a new effective period up to December 31, 2028. Methodology and Conditions The National Executive Power established that contracts are to be awarded by means of a bidding process to be invited by the SE. On November 14, 2022, SE Resolution No. 770/22 was published, launching, within the framework of the Assurance Plan, bidding rounds No. 4 (for Neuquen basin) and No. 5 (for Golfo San Jorge and Austral basins). As regards Neuquen basin, Round No. 4 had the following goals: (i) Round 4.1: extension of the commitments assumed within the framework of Rounds 1 and 3 of the Plan Gas.Ar for another 4 years, from January 1, 2025, to December 31, 2028, with the same volumes and prices equal to or lower than the ones awarded in due course. In the event that an awarded producer did not exercise the option to extend, the Energy Secretariat offered the bidders requesting the extension the option to complete the volume; and (ii) Round 4.2: award of incremental volumes: a. July Flat Gas: 11 MM m3/d from 7/1/23 to 12/31/28, b. January Flat Gas: 3 MM m3/d from 1/1/24 to 12/31/28, c. Peak Gas 2024: 7MM m3/d from 5/1 to 9/30, from 2024 to 2028, and d. Peak Gas 2025: 7MM m3/d from 5/1 to 9/30, from 2025 to 2028. As regards the price, bidders had to offer a price lower than or equal to the following: Flat Gas: U$S 4/MMBTU and for Peak Gas: U$S 6,9/MMBTU, to which an adjustment factor of 1.3 had to be applied. Bidding Rounds On December 22, 2022, a total volume of 66.4 million m3/day at U.S.$3.6/MBTU was awarded for Round 4.1 pursuant to SE Resolution No. 860 and, for Round 4.2, a total volume of 14 million m3/day at U.S.$3.3/MBTU was awarded for July and January Peak Gas and a total volume of 14 million m3/day at U.S.$3.9/MBTU in wintertime was awarded for Peak Gas 2024 and Peak Gas 2025. Pampa was awarded the extension of volume and price of previous rounds with 4.8 million m3/day corresponding to July Flat Gas at a price of U.S.$3.485/MBTU. On September 27, 2023, under round 5, Pampa was awarded with respect to the Northwest basin, volumes from 13.5 million to 70.5 million m3/day at prices that decrease from U.S.$9.8/MBTU to U.S.$6.0/MBTU. 79 Table of Contents Natural Gas for the Residential and CNG Segment - Natural Gas Price within the PIST In December 2017, the extension period set forth by Law No. 27,200 to the public emergency declared in 2002 terminated. Therefore, Law No. 24,076 was reinstated, which provides that the price of natural gas supply should be determined by the free interaction of supply and demand. In mid-February 2019, a call for tenders was launched for the supply of natural gas to distribution companies on a firm basis to ToP and DoP up to 70% of the maximum daily volume and for a term of 12 months starting April 2019. For the Noroeste Basin, 9.4 and 3.8 million m3 per day were assigned for the winter (April- September 2019) and summer (October 2019-April 2020), respectively, at an average tender price of U.S.$4.35/MBTU. For the rest of basins, 36.1 and 14.4 million m3 per day were assigned for the winter and the summer, respectively, at an average tender price of U.S.$4.62/MBTU. Pampa participated and was awarded in this tender. Producers billed to distribution companies in Pesos considering Banco Nación’s average exchange rate for the first 15 days of the month immediately preceding the beginning of each seasonal period or, if lower, the exchange rate stipulated in the agreements (ENARGAS Resolution No. 72/19). However, the exchange rate update which should have been implemented on October 1, 2019, applicable to the October 2019 - April 2020 summer seasonal period, was deferred on several occasions. These agreements expired on March 31, 2020. Given the devaluation of the Ps. and the tariff freeze (Social Solidarity and Productive Reactivation Law), beginning in April 2020 pricing agreements started to be based on the range recognized by ENARGAS in the tariff schemes. In December 2020 the tender under the Plan Gas.Ar was conducted, agreeing on the supply to gas distributors and power plants for the 2021-2024 period for a total of 67.4 million m3/day, 35% of which will be destined to distributors. The average tendered annual base price was U.S.$3.5/MBTU, and an additional winter volume of 3.6 million m3/day was awarded at an average annual base price of U.S.$4.7/MBTU to be exclusively destined to the Priority Demand. Pampa participated and was awarded in this tender. Further, Decree No. 1053/18 provided that the Federal Government would bear the difference between the price of gas purchased by distributors and that recognized in final tariffs between April 2018 and March 2019. As of the date of this annual report, Pampa has collected the first installment of Ps. 41 million. However, on December 14, 2020 Law No. 27,591 was published, which abrogated this Decree. Pampa is evaluating the courses of action to take. It is worth highlighting that beginning in 2021 and pursuant to SE Resolution No. 354/20, the reference price at the PIST was set for natural gas production out of the Plan Gas.Ar, at U.S.$2.30/MBTU in the summer (October – April) and U.S.$3.50/MBTU in the winter (May – September) for the Neuquina Basin. On August 2, 2022, SE issued Resolution No. 610/22 by means of which the new reference price at PIST was set for natural gas to be applied to natural gas public service users in accordance with the provisions of Decree No. 332/22. In the case of ENARSA, it has to pay 100% of the price awarded in the Plan Gas.Ar. In February, June and August 2022 public hearings were held to consider the portion of natural gas PIST price that the National State assumes at its own expense within the framework of the Plan Gas.Ar. It is worth mentioning that, through SE Resolution No. 610/22, a gradual increase of the PIST price at which distributors are to pay non-subsidized residential consumptions was established, while distributors are to pay the subsidized price for the remaining subsidized consumers. On January 10, 2023, SE Resolution No. 6/23 was published. Pursuant to such resolution, natural gas PIST prices for contracts executed within the framework of Plan Gas.Ar and the Assurance Plan were adapted to the different types of users. On April 27, 2023, ENARGAS Resolution No. 186/23 to 196/23 were published. Pursuant to these resolutions, natural gas PIST prices for contracts executed within the framework of the Plan Gas.Ar and the Assurance Plan were adapted to the different types of users. 80 Table of Contents On March 27, 2024, SE Resolution No. 41/24 was published, establishing the prices in the PIST to be transferred to end users in relation to the agreements concluded within the framework of the Plan Gas.Ar (Decree No. 892/20 and amendments). These are defined for the following periods: (i) between April 1, 2024 and April 30, 2024; (ii) from May 1, 2024 to September 30, 2024; and (iii) from October 1, 2024 to December 31, 2024. Likewise, it established the obligation by ENARSA, the producing and distributing companies, and/or sub-distributors of natural gas with agreements from the Plan Gas.Ar to, within 5 consecutive days from the publication of this resolution (i.e., until April 1, 2024) or the next business day (i.e., until April 3, 2024), adjust said instruments and submit them to the Secretary of Energy and the ENARGAS. Finally, it instructs ENARGAS to: (i) issue tariff tables reflecting monthly variations in the exchange rate of prices to be transferred to tariffs; and (ii) take the necessary measures to ensure that invoices issued by public service providers for the distribution and sub-distribution of gas through networks nationwide reflect PIST gas prices. By Resolutions No. 93/24, No. 191/24, No. 232/24, No. 284/24, No. 602/24 and Resolution SCEyM No. 18/24, as well as Resolutions SE No. 25/25 and No. 139/25, the SE established the PIST price to be transferred to end users, in relation to the agreements concluded within the framework of the Plan Gas.Ar, for gas consumption from June, September, October and November 2024 and from January and April 2025 respectively and on the effective date of the tariff charts published by ENARGAS. Throughout 2025, the SE issued monthly resolutions setting out the PIST price updates to be transferred to end users in relation to the agreements concluded within the framework of the Plan Gas.Ar for gas consumption from January to December 2025, as well as the effective date of the tariff charts published by ENARGAS. It should be noted that the update in the PIST values increases the amount to be charged by us directly to the distributors, reducing the price compensation payable by the National State under the Plan Gas.Ar. - Gas subsidy compensation On March 6, 2025, ENARGAS Resolution No. 125/25 was published in the Official Gazette, repealing ENARGAS Resolutions No. 273/18 and N°399/24 and restructuring the subsidy’s compensation system for natural gas distribution companies, effective as of February 1, 2025. By this new system, compensations will be received directly by the producers and must be deducted from the invoices issued by them to the distribution companies. · Natural Gas for Power Generation From December 30, 2019, the fuel supply for power plants was again centralized in CAMMESA (except for generators under Energía Plus and SEE Resolution No. 287/17 contracts). Since then, CAMMESA has launched successive calls for tenders to cover its monthly consumption. Moreover, from 2021, most gas supplies to CAMMESA are channeled through the Plan Gas. Plan for the volumes committed under this program over a term of 4 years. Generators covered by Energía Plus and SEE Resolution No. 287/17 contracts have the option to assign the natural gas operation and transportation to CAMMESA. Pampa acceded to this scheme. It is worth mentioning that from mid-July 2021, CAMMESA launched, on average, fortnightly calls for the Plan Gas.Ar awardees to offer surplus volumes on an interruptible basis, with a maximum price equivalent to that awarded in the first round. In 2021, an average of 25.2 million m3/day were awarded at U.S.$3.4/MBTU (U.S.$4.4/MBTU until September and U.S.$2.9/MBTU onwards). After the closing of 2021, an average of 22.1 million m3/day was awarded at U.S.$2.9/MBTU. · Withdrawal of volumes from the Plan Gas.Ar SE Resolution No. 501/25 established additional guidelines for the withdrawal of volumes committed under the Plan Gas.Ar contracts between producers and CAMMESA and/or ENARSA, within the framework of SE Resolution No. 400/25. 81 Table of Contents In accordance with the regulations, on December 12, 2025, we requested CAMMESA to transfer up to 4,900,000 m³/day to it under the Plan Gas.Ar agreements. On December 30, 2025, CAMMESA approved the transfer of the contractual position requested by us in our capacity as owners of thermal generation units in the WEM, within the framework of the provisions of Article 2 of SE Resolution No. 501/25. · Assignment of contracts with ENARSA At the end of December 2025, SE Resolution No. 606/25 was issued, establishing adjustments to the Plan Gas.Ar for producers who adhere to it. Such producers must accept the assignment of their contracts to distributors and CAMMESA. The adhesion procedure will be carried out by submitting a note, within 30 business days of notification of the Resolution. Partial and/or conditional adhesion will not be accepted. Distributors will have to adhere within the same period. The terms and procedures for these assignments must be determined by ENARSA within 30 business days of the publication of the above-mentioned Resolution. Such period was extended to 45 days by SE Resolution No. 36/26 and for additional 180 days by SE Resolution 54/26. As of the date of this report, such determination is still pending. In addition, the following benefits are provided for adherents: (i) an increase in the provisional payment to 90% (Plan Gas.Ar compensation paid by the state), which will be based on the affidavit submitted by each producer (rather than on 85%); (ii) a reduction in the injection commitment, as the division by 0.7 of the production curve will no longer apply; and (iii) the elimination of the quarterly reporting regime on the progress of the investment plan. ENARGAS will supervise the process of assignment and allocation of volumes. · Natural Gas Export On April 27, 2021, a new procedure to authorize natural gas exports was implemented (SE Resolution No. 360/21). New permissions contemplate exports on a firm and preferential basis for Plan Gas.Ar’s awardees and set a minimum sales price equivalent to the off-peak price awarded in round 1. The Company, as an awardee under Plan Gas.Ar, may make firm exports during the summer period, extendable to the winter period when there is an oversupply in a specific basin and with the prior approval of the applicable authority. In February 2023, Pampa was granted permits to export gas to Chile on a firm basis for a maximum volume of 2.2 million m3/day for the May 2023 – June 2023 period. Subsequently, in June 2023, permits were granted to export gas to Chile on a firm basis for a maximum volume of 0.86 million m3/day from July to September 2023. In August 2023, additional permits were granted on a firm basis for 1.452 million m3/day for the October 2023 - April 2024 period. In December 2023, permits were granted to export gas to Chile on a firm basis for 0.6 million m3/day for the period from May 2024 to September 2024. It is worth highlighting that a natural gas export duty has been in effect since May 2020. PEN Executive Order No. 488/20, issued on May 19, 2020, established an export duty exemption if the international Brent price was equal to or below U.S.$ 45/bbl. The rate would rise gradually in line with the international reference price until reaching 8%, the cap to be recognized when Brent equals or exceeds U.S.$ 60/bbl. In 2021, the rate remained at 8%, except for January (3.1%) and February (5.7%). On November 17, 2022, SR Resolution No. 774 (SE Resolution No. 774/22) was published in lieu of SE Resolution No. 360/21. The new procedure defines three exportation areas with different summer limits: Neuquén basin 9 MM m3/day (Oct/23 – Apr/24), Austral basin 2 MM m3/day (Oct/23 – Apr/24) and Noroeste and other basins, not subject to volume limits. Volume limits will be allocated as follows: (i) 45% as a function of the awarded producer’s share in the total volume of the basin; and (ii) 55% among those generating the largest weighted price reduction per volume within the basin incremental volume. 82 Table of Contents A minimum price reference is established, which must be higher than or equal to the maximum between the Brent price percentage to be determined by the SE and the average awarded price adjusted by seasonal index. For the period May-June 2023, the minimum price is equivalent to U.S.$7.73/MBTU. Additionally, a firm volume of 3MM m3/day of exports will be authorized for Neuquén basin for the period May-June 2023 to be distributed among producers awarded in Round 4.2 “July Flat Gas” bid. Discounting volumes from Plan Gas.Ar and/or Assurance Plan contracts with CAMMESA and/or ENARSA is also allowed. With the enactment of the Bases Law, the free commercialization of hydrocarbons is established and the procedure of non-objection by the Secretary of Energy is introduced. Meanwhile, Decree No. 1,057/24 establishes that the SE shall adapt, among other regulations related to the export of hydrocarbons, SE Resolution No. 360/21. This regulation has not yet been issued. - Export of LNG Through the Bases Law (amending Law No. 24,076), a special export regime for liquefied natural gas (LNG) was established for those who produce, process, refine, trade, store and/or fraction hydrocarbons and/or their derivatives, subject non-objection of the SE. Moreover, on April 4, 2025, the SE approved the procedure for the export of LNG by means of its Resolution No. 145/25. The SE may raise objections within 120 administrative working days from the submission of the export notification by the interested party. If the Secretary of Energy does not raise any objection within the aforementioned period, a free export of LNG license is granted. The LNG export authorizations granted will be final with respect to the LNG volumes authorized for a period of up to 30 years, from the start-up of the liquefaction plant (on land or floating) or its extensions. In addition, the law provides that within six months of its entry into force, the Secretary of Energy shall carry out a study with a view to issuing a “Declaration of Gas Resource Availability” in the long term. Such declaration shall take into account the sufficiency of the country’s gas resources, projected over time, and the supply of natural gas from other sources to regularly satisfy domestic demand and, at the same time, supply on a firm and uninterrupted basis the LNG export projects that are expected to be developed and implemented during the same period of analysis. Decree No. 1057/24 defines the aspects to be included in this declaration. The ES must update this study at least every five years, or whenever a new LNG export application justifies it due to its size, longer duration and higher investment amounts. Among the grounds for objection, the ES may object to the export, in whole or in part, on the basis of the lack of availability of natural gas in Argentina, according to the Declaration of Availability of Gas Resources. Program for Access to Foreign Currency for Oil and Gas Incremental Production On May 28, 2022, Decree No. 277/22 was published in the Official Gazette, which provided that the SE will be able to enter into pluriannual contracts to cover natural gas demand (for a minimum of three years) by means of future auctions within the framework of the Plan Gas.Ar. Furthermore, Programs for Access to Foreign Currency for Oil Incremental Production (“RADPIP”) and Gas Incremental Production (“RADPIGN”), as well as the Program for Promotion of Employment, Work and Development of Regional and National Suppliers (“RPEPNIH”), were created. The beneficiaries of these programs will have access to the MLC to pay the principal and interest of trade or financial liabilities abroad, including liabilities to non-resident related companies and distribution of earnings and dividend corresponding to financial statements closed and audited and/or repatriation of investments of nonresidents. This benefit can be transferred to direct suppliers. Both for RADPIP and RADPIGN, access to MLC up to the mentioned amounts will not be subject to the Central Bank prior agreement, should the exchange regulations require so. In the case of natural gas, the benefit will be measured according to the Benefited Incremental Injection Volume (“VIIB”) valued at the weighted average export price over the last 12 months, net of export duties. This price cannot be lower than the weighted average price of base gas volumes awarded throughout the year, nor higher than twice the same value. VIIB will be equivalent to 30% of the incremental gas injection of the beneficiary with respect to their baseline. 83 Table of Contents In the case of oil, the benefit will be measured according to the Benefited Incremental Production Volume (“VPIB”) valued at the average Brent price over the last 12 months, net of export duties and subject to oil quality reductions. VPIB will be equivalent to 20% of the quarterly incremental oil production of the beneficiary with respect to their baseline. In both cases, the baseline will be the total production/injection of 2021 and the benefit percentage can be increased according to the assumptions set forth in the Decree. As regards RPEPNIH, supplier development plans will be controlled to ensure regional and national integration. A contracting scheme granting a preferential status to suppliers of goods and/or services of regional and national origin is also considered. On August 12, 2022, Decree No. 484/22 regulating DNU No. 277 was published. Furthermore, on January 16, 2023, SE Resolution 13/23 was published in the Official Gazette to regulate the steps to enroll in and obtain the benefit of access to foreign currency created by DNU No. 277. To date, Pampa has been granted certificates of access to the RADPIGN and RPEPNIH benefits corresponding to the third and fourth quarters of 2022 and the first quarter of 2023. The certificates requested for the second, third, and fourth quarters of 2023 and all four quarters of 2024 are still pending to be granted. Regulations Specifically Applicable to the Crude Oil Market · Crude Oil Commercialization in the Domestic Market As of the date of this annual report, there is no reference price for trading crude oil in the domestic market. However, considering the fuel price netback at the pump, local refiners are accepting prices below export parity. Since December 2023, the new management of YPF is trying to normalize gasoline and diesel prices in their pumps, leading to convergence of local oil price to export parity. · Liquid Hydrocarbons Export Duty Decree No. 488/20, issued on May 19, 2020, provided for an export duty exemption as long as the international Brent price was equal to or below U.S.$45/bbl, rising gradually as the international reference price increased until reaching 8%, the cap to be recognized when the reference price equals or exceeds U.S.$ 60/bbl. As of the date of this annual report, the rate amounts to 8%. On January 29, 2026, Decree No. 59/26 was published, establishing new export duties for conventional crude oil ranging from 0% (when the Brent crude oil price is equal to or below U.S.$ 65/bbl) to 8% (when the Brent crude oil price is equal to or above U.S.$ 80/bbl) and repealing the rate established in Decree No. 488/20 for this type of crude oil. The regulation came into effect on February 20, 2026, through SE Resolution No. 42/2026. Through the Bases Law, it was stipulated that the PEN may not interfere in or set the domestic market prices for any segment of the hydrocarbon production chain. Midstream - Transport Licenses The Bases Law amended Law No. 24,076 to provide that, at least 18 months prior to the expiry of a license, ENARGAS, at the request of the respective supplier, shall carry out an evaluation of the service provided by the supplier with a view to proposing to the National Executive Power the renewal of the license to provide public natural gas transport and distribution services for an additional period of twenty (20) years. 84 Table of Contents · Regulations Specifically Applicable to the LPG Business - Household Gas Bottles’ Program and Propane for Grids Agreement The program for the supply of butane for gas bottles at subsidized prices, created by Decree No. 470/15 and encompassed under the Household Gas Bottles’ Program (Secretary of Hydrocarbon Resources Resolution No. 56/17, as amended), is currently in force, and provides for the supply of a defined quota of LPG to fractionation companies, under a maximum reference price, to benefit low-income residential users. The sales price for butane and propane sold under the Household Gas Bottles’ Program was determined by the SRH, which established production and trade quotas for bottled LPG for low-income users (DNU No. 470/15, as amended). On January 22, 2025, the SE ordered the elimination of subsidies and set the export parity price as the maximum sale price (Res. No. 15/25). On July 3, 2025, further progress was made toward liberalizing the producer sale price, while maintaining the obligation to supply the domestic market (DNU No. 446/25). With respect to the Agreement for the Supply of Propane Gas for Undiluted Propane Gas Distribution Grids, on September 22, 2025, TGS signed a new Agreement for the Supply of Propane Gas for Undiluted Propane Gas Distribution Grids. The agreement establishes the compensation calculated as the difference between the sale price and the export parity published monthly by the SE. The Federal Government will pay the compensation through tax credit certificates, which are only applicable to the cancellation of hydrocarbon export duties. The agreement was in force from January 1 to December 31, 2025, and experienced significant delays in collections. However, on December 26, the SE requested that producers continue supplying under the same terms until a new agreement is executed. - Natural Gas Import Financing Charges Regarding ENARGAS Resolutions I-1,982/11 and I-1,991/11, which at the time provided for an approximate 700% increase in the natural gas import financing charge (created by Decree No. 2,067/08), on March 26, 2019, TGS was served notice of the first instance ruling upholding its claim for unconstitutionality and nullity of the above-mentioned provisions. The Federal Government appealed this ruling on March 29, 2019; the appeal was granted on April 3, 2019 and has not been resolved as of the date hereof. On December 1, 2020, the Court hearing the case resolved, taking into consideration the ruling and in view of the reasons alleged by TGS, to extend the validity of the granted injunction for a term of six months in such ordinary proceeding and/or until a final and conclusive ruling is issued. - Export Duty As for hydrocarbon exports, beginning in September 2018 there was an export duty of Ps. 4 per exported U.S.$ for propane, butane and LPG, with a maximum 12% rate (Decrees No. 793/18 and 865/18). The Social Solidarity and Productive Reactivation Law provided that, effective as of December 23, 2019, this rate may not exceed 8% of the taxable value or the Free on Board (“FOB”) price. However, until its regulation, Decrees No. 793/18 and 865/18 continued to apply. Decree No. 488/20, issued on May 19, 2020, provided for an export duty exemption as long as the international Brent price was equal to or below U.S.$45/bbl, rising gradually as the reference price increased up to 8%, the cap to be recognized when the Brent equaled or exceeded U.S.$ 60/bbl. On January 29, 2026, Decree No. 59/26 was published, establishing new export duties for conventional crude oil ranging from 0% (when the Brent crude oil price is equal to or below U.S.$ 65/bbl) to 8% (when the Brent crude oil price is equal to or above U.S.$ 80/bbl) and repealing the rate established in Decree No. 488/20 for this type of crude oil. The regulation came into effect on February 20, 2026, through SE Resolution No. 42/2026. 85 Table of Contents · Regulations Specifically Applicable to Crude Oil Transportation In November 2022, the SE launched the tariff update process. In 2023 and 2024, Oldelval submitted the requested information, and in July 2024, SE conducted its audit. As a result, the new maximum tariff scheme entered into force on June 12, 2025, applicable for the 2025–2029 five-year period (SE Resolution No. 256/25). Separately, on September 14, 2022, the SE granted the concession extension and its Medanito–Puesto Hernández expansion through November 14, 2037. In 2022, Oldelval tendered firm transportation capacity on the Allen–Puerto Rosales pipeline, within the framework of the Duplicar Project, for more than 314 kbpd, through contracts effective until the end of the concession. Construction of the Duplicar Project was completed in March 2025, with Pampa being awarded 6 kbpd of transportation capacity. · Oil Storage and Evacuation Related to the tender invited by Oldelval, Oiltanking Ebytem called for bids to increase oil delivery capacity to up to 50,000 m3/day and storage capacity to up to 300,000 m3. These expansions will be solely designed for oil exportation. 86 Table of Contents ELECTRICITY REGULATORY FRAMEWORK Overview Until 1990, virtually all of the electricity supply in Argentina was controlled by the public sector. In 1991, the Argentine Government undertook the privatization of state-owned electricity generation, transmission and distribution companies. In January 1992, the Argentine Congress enacted Law No. 24,065 (the “Regulatory Framework Law”), which established guidelines for the restructuring and privatization of the electricity sector. The ultimate goals of the privatization process was to reduce electricity tariffs and improve the quality of the electricity supply service through competition. The Regulatory Framework Law, which continues to provide the framework for regulation of the electricity sector, distinguished between the generation, transmission and distribution of electricity as separate businesses and made each subject to its own regulatory framework. The Public Emergency Law combined with the devaluation of the Peso and high rates of inflation had a severe effect on public utilities in Argentina. Because public utilities were no longer able to increase tariffs, inflation led to decreases in their revenues in real terms and a deterioration of their operating performance and financial condition. Most public utilities had also incurred large amounts of foreign currency indebtedness under the Convertibility Law Nº 23,928 regime and, following the devaluation of the Peso, the debt service burden of these companies increased sharply, which led many of them to suspend payments on their foreign currency debt in 2002. This situation caused many Argentine electricity generators, transmission companies and distributors to defer making further investments in their networks. As a result, Argentine electricity market participants, particularly generators, operated at near full capacity, which led to insufficient supply to meet a growing national energy demand. To address the above-mentioned electricity crisis, the Argentine Government has repeatedly intervened in and modified the rules of the WEM, creating a huge structural deficit in the operation of the WEM. In that sense, and to increase the electric power supply, the Argentine Government established several programs (FONINVEMEM projects, Energy Plus Program, among others), which evidenced a decision by the Argentine Government to take a more active role in promoting energy investments in Argentina. The Argentine Government additionally continued to implement various measures in order to regulate the operation of the WEM and of the intervening agents. In December 2015 and 2019, the state of emergency with respect to the national electricity system was declared. The state of emergency allowed the Argentine Government to take actions designed to guarantee the supply of electricity in Argentina such as instructing the ME&M to elaborate and implement, with the cooperation of all federal public entities, a coordinated program to guarantee the quality and security of the electricity system and rationalize public entities’ consumption of energy. The Argentine Government continued its intervention in the energy sector and measures allowing its return to normal are still pending. On December 16, 2023, Decree No. 55/23 declared the emergency of the national energy sector until December 31, 2024, comprising energy generation, transmission, distribution and the transmission and distribution of natural gas. The decree instructed the SE to take the necessary measures in order to: (i) define new mechanisms to set up competitive and free prices in the energy sector; and (ii) guarantee that energy and natural gas transport and distribution utilities can have the necessary incomes to provide adequate services and investments. 87 Table of Contents The abovementioned decree ordered the intervention of ENRE and ENARGAS and the execution of new procedures for the election of the members of their boards. SE Resolution No. 1/23 and ME Resolution No. 5/23 appointed the new controllers for the ENRE and ENARGAS, respectively. Moreover, Decree No. 55/23 defined new administrative procedures for the determination of new energy and natural gas tariffs schemes. Following the decree, both ENARGAS and SE issued resolutions calling for public hearings for the analysis of the new tariffs and subsidies schemes. On December 20, 2023, the PEN issued Urgency and Necessity Decree No. 70/23, declaring once again a state of public emergency with respect to economic, financial, fiscal, administrative, pension, tariff, health and social matters until December 31, 2025. Among other measures, the Decree empowered the SE to (i) redetermine the electricity and natural gas subsidy structures on the basis of the end users’ household income, (ii) calculate the cost of basic consumption on the basis of the rates at each supply point, and (iii) define mechanisms in connection with the allocation of subsidies and their collection by users. The Decree also introduces a series of amendments to different laws, such as amendments to Law No. 19,550 and Law No. 23,696, establishing that state-owned companies shall be subject to state supervision, and providing that the national state shall not be granted any public law prerogatives or advantages with respect to companies in which the national state is a shareholder. In addition, the Decree introduces amendments and repeals a number of existing laws, such as (i) Law No. 27,545, which established certain rules for the display of products on store shelves, (ii) Law No. 20,680, which granted the Secretary of Commerce the ability to impose severe regulations and penalties relating to supply and distribution of goods, and (iii) Law No. 27,221, which set forth new rules applicable to real estate lease agreements executed for touristic purposes. Decree No. 70/23 became effective on December 29, 2023. The Decree is subject to review by the National Congress and could be left without effect in case both chambers of congress decide to reject it. As of the date of this report, Decree No. 70/23 had been rejected by the Senate, and review by the House of Representatives (Cámara de Diputados) is still pending. In addition, it is currently the subject of several challenges in Argentine courts. In this respect, it is not possible to predict whether Decree No. 70/23 will remain in force in the future, or whether the current administration will issue new decrees or regulations that could impact our business. Recently, the Government held public hearings to establish new tariffs for energy transport and distribution, natural gas price and natural gas transport and distribution. Upon its conclusion the Government issued the relevant resolutions which increased the natural gas price and the abovementioned tariffs, cutting off a significant portion of subsidies. Decree No. 1023/24 extended the emergency and its associated actions until July 9, 2025. Also, Bases Law i) provides for the unification of ENRE and ENARGAS into a single regulatory structure; and ii) authorizes the PEN, during the period of the declared emergency, to adapt the regulatory framework for electricity, according to Laws Nos 15.336 and 24.065, in order to: - promote the opening of international trade in electricity; - ensure free marketing and maximum competition in the sector, guaranteeing final consumers a free choice of supplier; - promote the economic dispatch of energy transactions based on remuneration in the hourly economic cost of the system, taking into account the hourly marginal cost of the system and the energy not supplied; - adjust energy system tariffs based on the real cost of supply in order to cover investment needs and ensure the continued provision and regulation of public services; - explicitly differentiate the funds to be paid by the end user, with the explicit obligation of the distributor to act as a collection or withholding agent for the amounts to be collected for energy, transport and taxes corresponding to the WEM and the Treasury, as appropriate; and - ensure the development of electricity transmission infrastructure through open, transparent, efficient and competitive mechanisms. On January 28, 2025, SE Resolution No. 21/25 was published, establishing several modifications to the current regulation of the dispatch and operation of the WEM Term Market, as mentioned in the previous sections. Many of the aspects introduced by the resolution require future development regulations and/or clarifications for their application. The Resolution exempts generators, self-generators and co-generators of conventional thermal, hydroelectric and nuclear sources that enters into commercial operations as of January 1, 2025 from the suspension of contracting in the MAT. 88 Table of Contents Regarding the Energy Plus market, it restricted the renewal and/or submission of new contracts until October 31, 2025. Existing Energy Plus contracts will remain in force until they are terminated. Once the contracts are terminated, the Energy Plus Market will cease to exist and the generation units authorized under this regime will be remunerated under the new market rules. In relation with the dispatch and allocation of natural gas for generation, it repealed, with effect as of February 1, 2025, the dispatch regime established by SE Resolution No. 354/20, which settled a dispatch priority to generators in order to comply with the obligations (TOP and residual) of ENARSA’s supply contract with Bolivia and CAMMESA’s and ENARSA natural gas contracts under the Plan Gas.Ar. On the other hand, as of March 1, 2025, it authorizes the recognition of fuel costs in accordance with reference prices and the values declared and accepted in the declaration of production costs, plus freight, natural gas transport and distribution costs, and taxes and duties. CAMMESA will continue to centralize the management of fuels for those units under CAMMESA’s PPAs (e.g. Resolutions No. 220/07, No. 21/17 and No.287/17). Generators remunerated under the Spot Market will be able to manage their own fuel supply, leaving CAMMESA as supplier of last resort. Finally, it establishes new values for the cost of energy not supplied, setting a maximum of U.S.$ 1,500/MWh as of February 1, 2025, with the following steps; (i) up to 5% 350 U.S.$/MWh; (ii) up to 10% U.S.$ 750/MWh; and (iii) more than 10% U.S.$ 1,500/MWh. Regarding the ability of generators to supply their own fuel, on April 4, 2025, note NO-2025-35216647-APN-SE#MEC was issued, establishing additional guidelines to note NO-2025-16900682-APN-SE#MEC for the gas dispatch priority scheme for thermal generation in the WEM. The new directives state that offers from generators opting to manage their own fuel supply will be considered firm, and in case of non-compliance, they will be penalized with a Deliver or Pay equivalent to 70% of the reference price for the unavailable volume. A new reference price applicable to different scenarios was set, equivalent to 90% of the weighted average representative price per basin for natural gas at the PIST, using the prices from Round 4.2 for the Neuquina Basin and Round 4.1 for the Austral Basin. For the Northern Basin, prices from the Neuquina Basin will be used. Additionally, the reference price for natural gas originating from neighboring countries was modified. Reference prices for liquid fuels are determined for each generator based on international indicators, including a premium to cover associated financial and logistical costs. Regarding the payment for liquid fuels and natural gas from neighboring countries, the exchange rate corresponding to the business day prior to the transaction due date will be recognized, linked to the consumption recognized in the respective economic transaction. On January 28, 2025, the SE sent to CAMMESA Note NO-2025-09628437-APN-SE#MEC, in which it made several reflections on the current state of the WEM and instructed CAMMESA to draft certain briefs proposing new regulatory measures based on the Guidelines included in such note. The Guidelines were sent to AGEERA, ADEERA, ATEERA and AGUERA for them to comment on their content. As of the date of this annual report, all the associations have sent their comments to the SE. The Guidelines set several changes in the structure of the WEM and the compensation schemes for power generation. Based on CAMMESA’s briefs, the SE issued transitional rules for the adaptation of the WEM. On October 21, 2025, the SE published Resolution No. 400/25 which approved the “Rules for Normalization of WEM” and its “Progressive Adaptation”. The Rules for the Normalization of the WEM aim to ensure operational continuity and system growth by introducing a price signaling mechanism for demand and a remuneration scheme for spot sales based on marginal costs and enabled energy and capacity contracts through the Term Market. 89 Table of Contents This framework requires thermal generators to progressively manage their own fuel procurement, recovering associated costs through the Spot Market or Term Market. Given the constraints of the Plan Gas.Ar (in force until 2028) and limitations in gas transportation, transitional rules were established for access to fuels, while CAMMESA remains as the supplier of last resort. The scheme also enables generators to declare Variable Production Costs (CVP) to foster competitive dispatch and cost recovery. Additionally, adjustments to the pricing structure seek to value installed capacity and encourage new investments. For distributor users unable to manage their own supply, costs will be stabilized via existing supply contracts and state-managed generation. These rules will be complemented by additional instruments to ensure progressive adaptation and competitive mechanisms for energy, capacity, and ancillary services within the WEM. Regarding the changes in remuneration schemes. See “Item 4. The Argentine Energy Sector - Electricity Prices”. The Seasonal Demand of WEM Distributors includes residential and non-residential users, excluding Large Users (GUDI), and will be primarily supplied through “Assigned Generation,” which comprises existing WEM supply contracts (renewable and thermal), national hydroelectric generation, nuclear generation, and opportunistic imports. Residential demand will have priority in the use of this generation, while for the coverage of non-residential demand, distributors must complement their supply through the Spot Market or Term Market contracts. Associated costs will be passed through via stabilized seasonal prices. To ensure supply, distributors must cover at least 75% of their seasonal demand through contracts, complementing Assigned Generation with agreements in the Term Market. CAMMESA will assess short- and medium-term reserve requirements to guarantee the incorporation of additional capacity in the WEM. SE Resolution No. 501/25, complemented the normalization process of the WEM by enabling producers under the Plan Gas.Ar to partially or fully transfer contracted volumes under contracts executed with CAMMESA to generators. These transferred volumes are considered self-managed gas for dispatch purposes, allowing generators to declare their Variable Production Cost (CVP) for dispatch competition. The resolution also sets limits for CVP declarations, maintains operational obligations under the Plan Gas.Ar, and confirms that remuneration for these volumes will follow the Spot Market pricing scheme. This measure reinforces the transition toward decentralized fuel management and competitive mechanisms introduced by SE Resolution No. 400/25. Regulatory Authorities As of the date of this annual report, the principal regulatory authorities responsible for the Argentine electricity market are: (1) the Ministry of Economy, which assumed responsibility over the SE; (2) the ENRE; and (3) CAMMESA. The ENRE is an autonomous agency created by the Regulatory Framework Law. The ENRE has a variety of regulatory and jurisdictional powers, including, among others: · enforcement of the Regulatory Framework Law and related regulations; · control of the delivery of electric services and enforcement of the terms of concessions; · adoption of rules applicable to generators, transmitters, distributors, electricity users and other related parties concerning safety, technical procedures, measurement and billing of electricity consumption, interruption and reconnection of supplies, third-party access to real estate used in the electricity industry and quality of services offered; · prevention of anticompetitive, monopolistic and discriminatory conduct between participants in the electricity industry; · imposition of penalties for violations of concessions or other related regulations; and · arbitration of conflicts between electricity sector participants. Until the ENRE intervention pursuant to Decree No. 277/20, the ENRE was managed by a five-member board of directors appointed by the Argentine Government. Two of these members were nominated by the Federal Council on Electricity (Consejo Federal de la Energía Eléctrica) (the “CFEE”). The CFEE is funded with a percentage of revenues collected by CAMMESA for each MWh sold in the market. Sixty percent of the funds received by the CFEE are reserved for the Fondo Subsidiario para Compensaciones Regionales de Tarifas a Usuarios Finales (regional tariff subsidy fund for end users), from which the CFEE makes distributions to provinces that have met certain specified tariff provisions. The remaining forty percent are used for investments related to the development of electrical services in the interior of Argentina. 90 Table of Contents Since March 16, 2020, the Executive Branch has successively ordered the intervention of the ENRE. As indicated on the previous chapter, Decree No. 55/23 ordered a new intervention on the ENRE and ENARGAS, cancelled the procedures for the election of the members of their boards and instructed the commencement of new procedures. The Bases Law ordered that the ENRE and the ENARGAS will merge into a single new Regulatory Authority for the energy and the natural gas industries. In that way Decree No. 452/25, published on July 4, 2025, established the National Regulatory Agency for Gas and Electricity through the unification of ENRE and ENARGAS. This new agency, which must be fully operational within 180 calendar days from the publication of the Decree, will have a Board of Directors comprising a president, a vice president, and three board members, to be appointed by a public selection process. On October 9, 2025, SE Resolution No. 388/25 started the appointment of the Agency’s board members; and SE Resolution No. 479/25 published in November 2025 established the Selection Committee for the members of the board of the Agency. As of the date of this report, the new Agency has not been effectively implemented. The creation of the WEM made it necessary to create an entity in charge of the management of the WEM and the dispatch of electricity into the National Interconnection System (the “SIN”). The duties were entrusted to CAMMESA, a private company created for this purpose. CAMMESA is in charge of: · the dispatch of electricity into the SIN, maximizing the SIN’s safety and the quality of electricity supplied and minimizing wholesale prices in the spot market; · planning energy capacity needs and optimizing energy use in accordance with the rules set forth from time to time by the SE; · monitoring the operation of the term market and administering the technical dispatch of electricity under agreements entered into in that market; · acting as agent of the various WEM agents and carrying out the duties entrusted to it in connection with the electricity industry, including billing and collecting payments for transactions between WEM agents (upon enactment of SE Resolution No. 95/13, this was limited to the contracts then in force and, thereafter, to those contracts executed under Energy Plus Program); · purchasing and/or selling power from abroad or to other countries by performing the relevant import/export transactions; · purchasing and administering of fuels for the WEM generators under certain emergency conditions; and · providing consulting and other related services. Five groups of entities each hold 20% of the capital stock of CAMMESA. The five groups are the Argentine Government, the associations that represent: (i) the generation companies (AGEERA), (ii) the transmission companies (ATEERA), (iii) the distribution companies (ADEERA) and (iv) the large users (AGUEERA). CAMMESA is managed by a board formed by representatives of its shareholders. The board of CAMMESA is composed of ten regular and ten alternate directors. Each of the associations that represent generation companies, transmission companies, distribution companies and large users are entitled to appoint two regular and two alternate directors of CAMMESA. The other directors of CAMMESA are under the SE, who is the board chairman and an independent member, who acts as vice chairman. The decisions adopted by the board of directors require the affirmative vote of the board’s chairman. CAMMESA’s operating costs are financed through mandatory contributions by the WEM agents. 91 Table of Contents Key Participants Generators Generators are companies with electricity generating plants that sell output either partially or wholly through the SIN. Generators are subjected to the scheduling and dispatch rules set out in the regulations and managed by CAMMESA. Privately owned generators may also enter into direct contracts with distributors or large users. However, this possibility was suspended by SE Resolution No. 95/13, which in this respect, remains in effect except for the Energy Plus Program, renewable energy supply contracts and, upon SE Resolution No. 21/25, for generator whose entry into commercial operations takes place as of January 1, 2025. Transmitters Transmission companies hold a concession to transmit electric energy from the bulk supply point to electricity distributors. The transmission activity in Argentina is subdivided into two systems: the High Voltage Transmission System (“STEEAT”), which operates at 500 kV and transports electricity between regions, and the regional distribution system (“STEEDT”) which operates at 132/220 kV and connects generators, distributors and large users within the same region. Transener is the only company in charge of the STEEAT, and six regional companies operate within the STEEDT (Transcomahue, EPEN, Transnoa, Transnea, Transpa, Transba and Distrocuyo). In addition to these companies, there are also independent transmission companies that operate under a technical license provided by the STEEAT or STEEDT companies. Transmission and distribution services are carried out through concessions. These concessions are re-distributed periodically based on a re-bidding process. Transmission companies are responsible for the operation and maintenance of their networks, but not for the expansion of the system. The transmission concessions operate under the technical, safety and reliability standards established by the ENRE. Penalties are applied whenever a transmission concessionaire fails to meet these criteria, particularly those regarding outages and grid downtime. Generators can only build lines to connect to the grid, or directly to customers. Users pay for new transmission capacity undertaken by them or on their behalf. A public hearing process for these projects is conducted by the ENRE, which issues a “Certificate of Public Convenience and Necessity.” Transmission or distribution networks connected to an integrated system must provide open access to third parties under a regulated toll system unless there is a capacity constraint. Distributors Distributors are companies holding a concession to distribute electricity to consumers. Distributors are required to supply any and all demand of electricity in their exclusive areas of concession, at prices (tariffs) and conditions set forth in regulations. Penalties for non-supply are included in the concession’s agreements. The three distribution companies (Edenor, Edesur and Empresa Distribuidora La Plata S.A. (“Edelap”)) divested from Servicios Eléctricos del Gran Buenos Aires (“SEGBA”), represent more than 41% of the electricity market in Argentina. Only a few distribution companies (i.e., Empresa Provincial de Energía de Córdoba, Empresa de Energía de Santa Fe and Energía de Misiones) remain in the hands of the provincial governments and cooperatives. Edelap has been transferred to the jurisdiction of the Province of Buenos Aires. Concessions were issued for distribution and retail sale, with specific terms for the concessionaire stated in the contract. The concession periods are divided into “management periods” that allow the concessionaire to give up the concession at certain intervals. Large users The WEM classifies large users of energy into three categories: (1) GUMAs, (2) GUMEs and, (3) Grandes Usuarios Particulares (Major Particular Users or “GUPAs”). 92 Table of Contents Each of these categories of users has different requirements with respect to purchases of their energy demand. For example, GUMAs are required to purchase 50% of their demand through supply contracts and the remainder in the spot market, while GUMEs and GUPAs are required to purchase all of their demand through supply contracts. Energy Traders Energy Traders act as “participants” of the WEM. They can execute contracts in the Term Market with generators, resell energy to large users and distributors or act as intermediaries between such parties. With the deregulation scheme implemented by SE Resolution No. 400/25, energy traders are expected to have a significant role in Term Market transactions. Limits and restrictions To preserve competition in the electricity market, participants in the electricity sector are subject to vertical and horizontal restrictions, depending on the market segment in which they operate. Vertical restrictions The vertical restrictions apply to companies that intend to participate simultaneously in different sub-sectors of the electricity market. These vertical restrictions were imposed by Law No. 24,065, and apply differently according to each sub-sector as follows: Generators · Under Section 31 of Law No. 24,065, neither a generation company nor any of its controlled companies or its controlling company, can be the owner or a majority shareholder of a transmitter company or the controlling entity of a transmitter company; and · Under Section 9 of Decree No. 1,398/92, since a distribution company cannot own generation units, a holder of generation units cannot own distributions concessions. However, the shareholders of the electricity generator may own an entity that holds distribution units, either by themselves or through any other entity created with the purpose of owning or controlling distribution units. Transmitters · Under Section 31 of Law No. 24,065, neither a transmission company nor any of its controlled companies or its controlling entity, can be the owner or majority shareholder or the controlling company of a generation company; · Under Section 31 of Law No. 24,065, neither a transmission company nor any of its controlled companies nor its controlling company, can be the owner or majority shareholder or the controlling company of a distribution company; and · Under Section 30 of Law No. 24,065, transmission companies cannot buy or sell electric energy. Distributors · Under Section 31 of Law No. 24,065, neither a distribution company, nor any of its controlled companies or its controlling company, can be the owner or majority shareholder or the controlling company of a transmission company; and · Under Section 9 of Decree No. 1,398/92, a distribution company cannot own generation units. However, the shareholders of the electricity distributor may own generation units, either by themselves or through any other entity created with the purpose of owning or controlling generation units. 93 Table of Contents Definition of control The term “control” referred to in Section 31 of Law No. 24,065 (which establishes the vertical restrictions), is not defined in the Regulatory Framework. Section 33 of the LGS states that “companies are considered as controlled by others when the holding company, either directly or through another company: (1) holds an interest, under any circumstance, that grants the necessary votes to control the corporate will in board meetings or ordinary shareholders’ meetings; or (2) exercises a dominant influence as a consequence of holding shares, quotas or equity interest or due to special linkage between the companies.” We cannot assure you, however, that the electricity regulators will apply this standard of control in implementing the restrictions described above. The regulatory framework outlined above prohibits the concurrent ownership or control of (1) generation and transmission companies, and (2) distribution and transmission companies. Although we are a fully integrated electricity company engaged in the generation, transmission and distribution of electricity in Argentina, we are in compliance with these legal restrictions, as we do not hold a controlling interest, either directly or indirectly, in Transener. Horizontal restrictions In addition to the vertical restrictions described above, distribution and transmission companies are subject to horizontal restrictions, as described below. Transmitters · According to Section 32 of Law No. 24,065, two or more transmission companies can merge or be part of the same economic group only if they obtain an express approval from the ENRE. Such approval is also necessary when a transmission company intends to acquire shares of another electricity transmission company; · Pursuant to the concession agreements that govern the services rendered by private companies operating transmission lines above 132Kw and below 140Kw, the service is rendered by the concessionaire on an exclusive basis over certain areas indicated in the concession agreement; and · Pursuant to the concession agreements that govern the services rendered by the private company operating the high-tension transmission services equal to or higher than 220Kw, the company must render the service on an exclusive basis and is entitled to render the service throughout the entire country, without territorial limitations. Distributors · Two or more distribution companies can merge or be part of the same economic group only if they obtain an express approval from the ENRE. Such approval is necessary when a distribution company intends to acquire shares of another electricity transmission or distribution company; and · Pursuant to the concession agreements that govern the services rendered by private companies operating distribution networks, the service is rendered by the concessionaire on an exclusive basis over certain areas indicated in the concession agreement. GENERATION Electricity Prices Spot prices The emergency regulations enacted after the Argentine crisis in 2001 had a significant impact on energy prices. Among the measures implemented pursuant to the emergency regulations were the pesification of prices in the WEM, known as the spot market, and the requirement that all spot prices be calculated based on the price of natural gas, even in circumstances where alternative fuel such as diesel is purchased to meet demand due to the lack of supply of natural gas. 94 Table of Contents Prior to the crisis, energy prices in the spot market were set by CAMMESA, which determined the price charged by generators for energy sold in the spot market of the WEM on an hourly basis. The spot price reflected supply and demand in the WEM at any given time, which CAMMESA determined using different supply and demand scenarios that dispatched the optimum amount of available supply, taking into account the restrictions of the transmission grid, in such a way as to meet demand requirements while seeking to minimize the production cost and the cost associated with reducing risk of system failure. The spot price set by CAMMESA compensated generators according to the cost of the next unit to be dispatched as measured at the Ezeiza 500 kV substation, which is the system’s load center and is in close proximity to the City of Buenos Aires. Dispatch order was determined by plant efficiency and the marginal cost of providing energy. In determining the spot price, CAMMESA also would consider the different costs incurred by generators outside the province of Buenos Aires. In addition to energy payments for actual output at the prevailing spot market prices, generators would receive compensation for capacity placed at the disposal of the spot market, including stand-by capacity, additional stand-by capacity (for system capacity shortages) and ancillary services (such as frequency regulation and voltage control). In October 2019, through SRRYM Resolution No. 38/19, the spot price at the WEM was established at 720 Ps./MWh. In May 2021, the spot price at the WEM was raised to 930 Ps./MWh (SE Resolution No. 748/21). Throughout 2025, the maximum spot price in the WEM was progressively updated as follows: SE Resolution No. 27/25 set the price at 12,469 Ps./MWh as from February; SE Resolution No. 143/25 raised it to 12,948 Ps./MWh as from April; SE Resolution No. 227/25 increased it to 13,300 Ps./MWh as from June; SE Resolution No. 280/25 updated it to 13,433 Ps./MWh as from July; SE Resolution No. 331/25 raised it to 13,487 Ps./MWh as from August; SE Resolution No. 356/25 adjusted it to 13,554 Ps./MWh as from September; SE Resolution No. 381/25 increased 13.622 Ps./MWh as from October; SE Resolution No. 483/25 established a unique spot price in the WEM of 14,000 Ps./MWh as from November 1; SE Resolution No. 602/25 increased the spot price to 14,381 Ps./MWh as from December; and SE Resolution No. 34/26 set the spot price at 14,669 Ps./MWh as from January 2026. With respect to the remuneration for legacy generation capacity, the remuneration scheme established by SEE Resolution No. 19/17 remained in force until February 28, 2019. From March 1, 2019 to January 31, 2020 SRRYME Resolution No. 1/19 was in effect, and, beginning on February 1, 2020, SE Resolution No. 31/20 came in effect. As of February 2021, SE Resolution No. 440/21 increased the values defined in SE Resolution No. 31/20 by 29%. It also repealed the automatic adjustment mechanism included in SE Resolution No. 31/20. On April 21, 2022, the remuneration scheme was modified by SE Resolution No. 238/22 that established a 30% increase in remuneration retroactive to February 2022 and a new 10% increase to be applied beginning in June 2022. It also eliminated the use factor used to calculate generators remuneration and the temporary energy export’s remuneration. On December 12, 2022, the remuneration scheme was modified by SE Resolution No. 826/22, which established a 20% increase in remuneration retroactive to September 2022 and a new 10% increase to be applied as of December 2022. It also established a 25% increase to be applied as of February 1, 2023, and a 28% increase to be applied as of August 2023. Regarding remuneration of thermal generation, the differential remuneration for motor-generator technology with a capacity of less than 42MW was eliminated. In addition, the remuneration scheme during peak thermal demand hours (both for thermal and hydroelectric generation) was replaced by a differentiated remuneration scheme during peak hours. The new scheme recognizes a remuneration equivalent to two times the value corresponding to the current price for energy generated, applicable from 18:00 to 23:00 every day during December, January, February, June, July and August, and one times such value for the same hours of the day for March, April, May, September, October and November. SE Resolutions No. 9/24 and No. 99/24 updated the remuneration values for spot generation, establishing an increase of 73.9% and 25%, respectively, for the economic transactions from February 2024 to June 2024. In addition, SE Resolutions No. 193/24, No. 233/24 and No. 285/24 and SCEyM Resolution 20/24 established further increases of 3%, 5%, 2.7% and 6% for the economic transactions of August, September, October and November 2024, respectively. Subsequently, Resolution 387/24 established a 5% increase from December 2024 and Resolution 603/24 a 4% increase for January 2025. Thereafter, Resolution 27/25 established a 4% increase for February 2025 and Resolutions 113/25 and 143/25 provided a further 1.5% increase for March and April, respectively. In turn, SE Resolutions No. 227/25, No. 280/25, No. 331/25, No. 356/25 and No. 381/25 established further increases of 1.5%, 1%, 0.4%, 0.5% and 0.5% for the economic transactions corresponding to June, July, August, September and October 2025, respectively. 95 Table of Contents SE Resolution No. 483/25 introduced significant changes to the remuneration scheme for generators not covered by the new remuneration scheme set forth in the Rules of the Normalization of the WEM set forth in SE Resolution No. 400/25 (see “Item 4. The Argentine Energy Sector – Term Market - Current Remuneration Scheme for the Spot Market”). Considering these modifications, SE Resolution No. 483/25 established a 3.5% increase for thermal generation and an increase ranging from 12% to 20% for hydroelectric generation for economic transactions corresponding to November. Then, SE Resolution No. 602/25 established an increase of 2% for the economic transactions corresponding to December 2025. Finally, SE Resolution No. 34/26 established a 2% increase applicable to all economic transactions corresponding to January 2026, except for Renewable HI units with installed capacity (P) ≤ 50 MW, to which a 20% increase was applied. SE Resolution No. 34/24 modified the payment terms under the Spot Market and gave energy transporters a priority to collect their revenues over energy generators. Consequently, if CAMMESA does not have enough funds to pay for both energy transporters and generators, transporters shall have priority to collect their revenues over generators. See “Item 4. The Argentine Energy Sector - Electricity Regulatory Framework.”. Power plants dispatch Upon the Plan Gas.Ar entering into force, SE Resolution No. 354/20 changed the dispatch of thermal power plants, establishing five categories according to the source of the natural gas supply. This scheme modified the previous cost-based dispatch. It also defined a “unified dispatch” by CAMMESA taking into account the following categories: (1) generators whose natural gas supply comes from the supply contract that ENARSA has in force with Bolivia up to the “take or pay” volumes; (2) generators whose natural gas supply is assigned by CAMMESA from the natural gas contracts executed under the Plan Gas.Ar regime up to the “take or pay” volumes; (3) generators whose natural gas supply is assigned by CAMMESA from the natural gas contracts executed under the Plan Gas.Ar regime in excess of the “take or pay” volumes and up to the maximum daily volume; (4) generators whose natural gas supply is assigned by CAMMESA from LNG contracts or other firm contracts executed by CAMMESA; and (5) generators whose natural gas supply comes from contracts with natural gas producers not assigned to CAMMESA, spot natural gas supply or other. Within each category the dispatch shall follow the production costs declared by each generator. The generators excluded from the centralized fuel supply by CAMMESA (i.e., power plants under the Energy Plus Program or with PPAs under SEE Resolution No. 287/17) may operatively assign the volumes and transport capacity that they have contracted. If they proceed with such an assignment, they will qualify in the third category, and if they do not execute the assignment, they will qualify in the fifth category. On January 28, 2025, SE Resolution No. 21/25 repealed SE Resolution No. 354/20. Following such decision the SE issued note NO- 025-16900682-APN-SE#MEC in which it instructed CAMMESA on the new conditions for the generators dispatch considering CAMMESA’s obligations under its Plan Gas.Ar contracts. According to note SE NO-025-16900682-APN-SE-MEC, once priority dispatch volumes treated as zero-cost generation have been satisfied, generators that have opted to supply their own fuel can participate in dispatch based on the ascending order of declared Variable Production Costs (CVP). Such participation occurs alongside units using natural gas supplied by CAMMESA and remains subject to applicable priority dispatch rules. On April 4, 2025, the SE issued note NO-2025-35216647-APN-SE#MEC, establishing additional guidelines to the ones contained in Note NO-2025-16900682-APN-SE#MEC for the gas dispatch priority scheme for thermal generation in the WEM. The new directives state that offers from generators opting to manage their own fuel supply will be considered firm, and in case of non-compliance, they will be penalized with a Deliver or Pay equivalent to 70% of the reference price for the unavailable volume. A new reference price applicable to different scenarios was set, equivalent to 90% of the weighted average representative price per basin for natural gas at the PIST, using the prices from Round 4.2 for the Neuquina Basin and Round 4.1 for the Austral Basin. For the Northern Basin, prices from the Neuquina Basin will be used. Additionally, the reference price for natural gas originating from neighboring countries was modified. 96 Table of Contents Reference prices for liquid fuels are determined for each generator based on international indicators, including a premium to cover associated financial and logistical costs. Regarding the payment for liquid fuels and natural gas from neighboring countries, the exchange rate corresponding to the business day prior to the transaction due date will be recognized, linked to the consumption recognized in the respective economic transaction. On October 21, 2025, SE Resolution No. 400/25 established a transition towards competitive and decentralized fuel management for thermal generators. Natural gas for power generation is dispatched with priority given to firm supply contracts under the Plan Gas.Ar scheme (in force until the end of 2028). During the transition, generators may source natural gas through centralized agreements with CAMMESA or manage their own supply, with full decentralization required from January 1, 2029. Alternative fuels (such as fuel oil, gas oil, coal, or LNG) must be managed directly by generators. Generators with self-managed fuel can freely declare their variable production cost (CVP) for dispatch, within reference price bands. Those without self-management remain under regulated costs and do not access the competitive margin scheme. CAMMESA continues as supplier of last resort for generators without self-managed fuel, but the remuneration for capacity without own fuel management is progressively reduced until it is eliminated in 2028. Dispatch is based on the CVP declared by each generator (or reference prices as indicated above), with reference values published by CAMMESA, and the marginal cost for dispatch is gradually adjusted to reflect both operated and next-unit costs. Seasonal prices The emergency regulations also made significant changes to the seasonal prices charged to distributors in the WEM, including the implementation of a cap (which varies depending on the category of user) on the cost of electricity charged by CAMMESA to distributors at a price significantly below the spot price charged by generators. See “Item 5. Operating and Financial Review and Prospects - Electricity prices and tariffs.” Prior to implementation of the emergency regulations, seasonal prices were regulated by CAMMESA as follows: · prices charged by CAMMESA to distributors changed only twice per year (in summer and winter), with interim quarterly revisions in case of significant changes in the spot energy price, despite prices charged by generators in the WEM fluctuating constantly; · prices were determined by CAMMESA based on the average cost of providing one MWh of additional energy (its marginal cost), as well as the costs associated with the failure of the system and several other factors; and · CAMMESA would use seasonal database and optimization models in determining the seasonal prices and would consider both anticipated energy supplies and demand as follows: (i) in determining supply, CAMMESA would consider energy supplies provided by generators based on their expected availability, committed imports of electricity and the availability declared by generators; and (ii) in determining demand, CAMMESA included the requirements of distributors and large users purchasing in the WEM as well as committed exports. On January 25, 2016, the ME&M issued Resolution No.6/16, approving the seasonal WEM prices for each category of users for the period from February 2016 through April 2016. Such resolution readjusted the seasonal prices set forth in the regulatory framework. Energy prices in the spot market had been set by CAMMESA, which determined the price charged by generators for energy sold in the spot market of the WEM on an hourly basis. The WEM prices resulted in the elimination of most energy subsidies and a substantial increase in electricity rates for individuals. Resolution No. 6/16 introduced different prices according to the customers’ categories. Such resolution also contemplated a social tariff for residential customers who comply with certain consumption requirements, which includes a full exemption for monthly consumptions below or equal to 150 kWh and preferential tariffs for customers who exceed such consumption level but achieve a monthly consumption lower than that of the same period in the immediately preceding year. This resolution also established tariff benefits addressed to residential customers for reducing their consumption. SEE Resolution No. 41/16 approved the winter seasonal prices in line with the prices included in SEE Resolution No. 6/16. During the Macri administration, the SGE issued various resolutions by means of which increased the portion of the generation cost to be paid by end users. However, there is still a portion of the generation costs, of approximately 40% for the quarter Feb/20 - Apr/20 according to CAMMESA’s estimations, that it is not transferred to the end users and it is covered by the Argentine Government. This situation led to a delay in CAMMESA’s payments to generators, which together with delayed payments from distributors have a negative impact on generators’ operations. 97 Table of Contents Moreover, SEE Resolution No. 20/17 allowed Provinces to collect the royalties to be paid by hydroelectric generators in kind in order to compensate for the debt of provincial distributors. During 2022, the Province of Neuquén applied for this scheme and obtained the corresponding authorizations (SE Resolution No. 769/22). SEE Resolution No. 1085/17 established a new scheme for the distribution of the energy transport cost to the final user and generators. Moreover, SRRYME, through Resolutions No. 2/19 and No.7/19, defined the methodology for such distribution and its inclusion in the seasonal price. Even though the latest resolutions defining the seasonal prices increased the energy transport costs, as of the date of this annual report, seasonal prices approved by the SE do not cover all sector costs. During 2021, the SE approved both winter and summer seasonal prices through different resolutions (SE Resolutions No. 408/21; No. 748/21; No. 1029/21 and No. 40/22). The main changes included the division of each distributor’s users into different categories to fix the reference prices to be applied to such users. For example, different reference prices were set to GUDIs which are health and education public institutions; general consumers (non-residential), residential users, and GUDIs whose activity is crypto mining. The SE defined un-subsidized prices and required distributors (mainly Edenor and Edesur) to calculate the subsidy for each invoice and include such amount in the respective invoice. Even though the SE approved higher prices than those applicable to residential end users, such prices do not cover the production cost. According to CAMMESA estimates, on average seasonal prices cover around 40% of the cost of production. During 2022 and 2023, the SE took several measures to reduce energy subsidies and transfer a higher proportion of the cost or energy production to the users. To that end, the SE established a new segmentation scheme. On February 5, 2024, SE Resolution No. 7/24 approved the summer seasonal reprogramming (February – April 2024) and established a new segmentation of distributors’ demand with only two categories: (i) “residential” (level 2 and 3 up to a consumption of 400 kWh per month); and (ii) “the rest”. The POTREF for the “The Rest” category was increased by 3,252.61%. The PEE prices for the former categories included in the “The Rest” segment were increased by 117% to 186%. Additionally, new unsubsidized POTREF ($2,682,088/MW-month) and PEE prices were sanctioned ($46,018/MWh; $44,401/MWh and $43,473/MWh depending on the hour of the day). On May 28, 2024, the National Government published Decree No. 465/24 in the Official Gazette, which ordered the restructuring of national jurisdiction energy subsidy regimes to ensure a gradual, orderly, and predictable transition to a scheme that allows users to bear the real costs of energy, promote energy efficiency, and ensure vulnerable residential users have access to essential consumption of electricity, natural gas, and bottled natural gas. To this end, a transition period of 6 months (extendable for an equal period) was established, depending on the evolution of the general economic situation and the dynamics of the energy sector. Additionally, it amended Decree No. 332/22, which had established the demand segmentation scheme considering the economic capacity of users (Level 1 (high income), Level 2 (low income), and Level 3 (middle income)). It also empowers the SE to: i) establish subsidized consumption limits for electricity and gas in all residential categories, considering criteria such as the area and time of year; ii) apply energy tariff discounts for users of different levels during a transition period; iii) charge consumption that exceeds subsidized limits at wholesale prices set by the Secretary of Energy, with possible gradual bonuses for Level 2 users; and iv) regularly review subsidized consumption limits and discounts, promoting efficient consumption habits, among others. 98 Table of Contents During this transition period, the evolution of all variables at play will be monitored, information cross-checks will be conducted, and the re-registration and updating of the ESAR (Energy Subsidy Access Registry) will be promoted to ensure that users are in the corresponding segment according to their income level. SE Resolution No. 90/24 applied caps on subsidized consumption volumes in all residential categories and segments, and discounts or bonuses on the Seasonal Price to be passed on to end users will be applied, establishing that excess consumption amounts be paid at wholesale electricity prices. Later, SE Resolution No. 19/24, established that on the final summer seasonal period starting on November 1, 2024 until April 30, 2025, the supply costs will be charged from distributors to large demand and level 1 users. On January 30, 2025, SE Resolution No. 26/25, established that the final summer seasonal period starting on November 1, 2024, until April 30, 2025, and, according to the information provided by CAMMESA, only Wholesale Large Users would pay for the actual energy cost of the new seasonal price and distributor’s demand has subsidized prices. On April 4, 2025, SE Resolution No. 171/25, established reference prices for the winter seasonal period starting on May 1, 2025 and ending on October 31, 2025. SE Resolutions No. 226/25, No. 331/25 and No. 334/25 modified the reference prices during such seasonal period and updated the surcharges of the National Electric Power Fund (FNEE). SE Resolution No. 434/25 established the final summer seasonal period for the period from November 1, 2025, to April 30, 2026, and approved un-subsidized reference prices. SE Resolutions No. 488/25 No. 604/25 No. 434/25, No. 488/25, No. 604/25 and No. 22/26 updated the reference and un-subsidized prices during the summer seasonal period. Following the publication of SE Resolution No. 400/25, seasonal prices were redefined to incorporate the new supply scheme. These prices are calculated based on the costs associated with Assigned Generation —including existing WEM supply agreements, hydroelectric generation owned by the National Government, nuclear generation, and any necessary imports— and, when coverage is insufficient, Spot market costs. The resolution also introduced segmentation of seasonal demand into two categories: Residential, with priority access to Assigned Generation and prices reflecting its average costs, and Non-Residential, which will be supplied with Assigned Generation and, when necessary, through Spot purchases or Term Market (MAT) contracts. Differences between the Stabilized Price and actual costs will be adjusted quarterly, and prices will be calculated by hourly bands (peak, off-peak, and valley), deducting capacity charges proportionally paid by distributors. Recently, Decree No. 934/25 unified the national energy subsidies and established the Targeted Energy Subsidy Scheme (SEF) for electricity and natural gas, among others. It also eliminated the segmentation by income levels and established a single category. Term market Generators may also enter into agreements in the term market to supply energy and capacity to distributors and large users. Term agreements typically stipulate a price based on the spot price plus a margin. Prices in the term market have sometimes been lower than the seasonal price that distributors are required to pay in the spot market. However, as a result of the emergency regulations, prices in the term market are currently higher than seasonal prices, particularly with respect to residential tariffs, making it unattractive to distributors to purchase energy under term contracts while prices remain at their current levels. The term market was suspended by SE Resolution No. 95/13 except for the Energy Plus Program, renewable energy supply contracts (MATER) and generators that entered into commercial operation as of January 1st, 2025 (as per SE Resolution No. 21/25). SE Resolution No. 400/25 enables contracting in the Term Market, differentiating between the Energy Term Market (MATE) and the Capacity Term Market (MAT Potencia), and establishes eligibility criteria for generators’ participation. In MATE, existing generation prior to January 1, 2025 can contract up to 100% of its monthly energy with distributors to cover unmet Seasonal Demand and up to 20% with large users (GUDI/GUMA/GUMES/GUPAS). Generators whose entry into commercial operation is after January 1, 2025 and generators with new firm natural gas transport contracts have no limitations and can contract all their capacity and energy with distributors and/or large users. 99 Table of Contents Provincially owned or managed hydroelectric power plants are authorized to contract without restrictions with distributors for their GUDIs and, from January 1, 2030, without limits with any Spot demand. Renewable generation maintains the MATER regime. In the Capacity Term Market there are no limitations on generators contracting with distributors and large users. Coverage under these contracts is assessed hourly in HRP. Coverage varies according to the power generation source used. Thermal generators’ coverage is 100%, while hydroelectric generators’ coverage is 70%. BESS projects may contract provided they comply with four hours of guaranteed energy charge. Renewable generators cannot offer capacity contracts. Remuneration Scheme for Generation Not Covered by Contracts Period, in Ps./MW-HMRT First 25 HMRT hours Second 25 HMRT hours Summer (December - February) and Winter (June - August) 45,000 22,500 Other (March - May and September - November) 7,500 - Current Remuneration Scheme for the Spot Market. Remuneration scheme for generators not covered by SE Resolution No. 400/25 On May 21, 2021, SE Resolution No. 440/21 was published in the Official Gazette increasing the remuneration scheme under SE Resolution No. 31/20 by an average of 29%. The resolution was retroactive as of February 2021 and rendered the update factor ineffective. The resolution also established that generators could apply this remuneration increase, provided they waived and/or dismissed all administrative and/or judicial claims filed due to the non-application of the automatic adjustment formula set by SE Resolution No. 31/20. Pampa adhered to this scheme. The remuneration scheme approved in SE Resolution No. 440/21 was modified on April 21, 2022, by SE Resolution No. 238/22. The latter established a 30% increase in remuneration as of February 2022 and a new 10% increase to be applied from June 2022 onwards. The remuneration scheme was modified on December 12, 2022, by SE Resolution No. 826/22, which established a 20% increase in remuneration as of September 2022 and a new 10% increase to be applied as of December 2022. It also established a 25% increase as of February 1, 2023, and a 28% increase as of August 2023. It also eliminated the use factor used to calculate generators’ remuneration and the temporary energy export remuneration. In September 2023, SE Resolution No.750/23 established a 23% increase in the remuneration as of September 2023. In October 2023, SE Resolution No. 869/23 updated the value of remuneration for spot generation with a 28% increase for November 2023. Finally, SE Resolution No. 9/24 approved a 74% increase as of February 2024. However, the latter resolution indicated in its whereas clause that the increase was a transitional measure until the SE establishes the necessary measures to comply with the provisions of Decrees 55/24 and 70/24 to allow a free market between WEM participants. The SE issued further resolutions during 2024 and 2025 updating the remuneration values for the economic transactions of those periods. Recently, SE Resolution No. 483/25 introduced significant changes to the remuneration scheme for such generators, consistent with the Rules of the Normalization of the WEM set forth in Resolution SE No. 400/25. This new scheme applies to generators that are not committed under power or energy availability contracts in the WEM, nor authorized to participate in the Spot Market regulated by SE Resolution No. 400/25. 100 Table of Contents It includes: (i) thermal units managed by ENARSA, the General San Martín and General Belgrano power plants, and combined-cycle units under agreements pursuant to SE Resolution No. 59/23; and (ii) hydroelectric power plants under national concessions, as well as the binational Salto Grande plant; but does not apply to privatized hydroelectric complexes (Alicurá, El Chocón–Arroyito, Cerros Colorados, Piedra del Águila), which remain subject to the regime established in SE Resolution No. 331/25 until further measures are implemented. Under this framework, capacity remuneration is calculated based on the monthly Real Power Availability (DRP) and guaranteed price by technology, removing the Base provision. For hydroelectric plants, availability is determined regardless of reservoir levels, and in the case of pumped-storage plants, both turbine operation and pumping availability are considered. In addition, the remuneration scheme has been streamlined by reducing distinctions based on technology and scale. Considering these modifications, SE Resolution No. 483/25 established a 3.5% increase for thermal generation and an increase ranging from 12% to 20% for hydroelectric generation for economic transactions for November. Finally, SE Resolution No. 602/25 established an increase of 2% for the economic transactions corresponding to December 2025. Finally, SE Resolution No. 34/26 established an increase of 2% for the economic transactions corresponding to January 2026. Remuneration to Generators Achieved (GA) consists of payments for monthly available capacity and energy, with energy understood as the sum of three components: i) based on the Energy Generated and the type of fuel, ii) the Energy Operated, and iii) the energy actually generated during peak hours. Remuneration for capacity availability is linked to the average Real Power Availability (RPA) for the month, valued at the Guaranteed Power Price (PrecPotDIGO). Remuneration for Capacity Availability. Remuneration for capacity availability is determined based on the Actual Power Availability (DRP) of each generation unit and the Guaranteed Power Price (PrecPotDIGO) corresponding to it, according to its technology, scale and monthly period. The Actual Power Availability (DRP) is the average monthly availability corresponding to month “m” of each generating machine “g”, that shall be calculated by taking the hourly values of available power recorded in that month. Thermal Power Generators The prices for the Available Power, in $/MW-month, for thermal generators under SE Resolution No. 438/25, are as follows: Thermal / Period PrecPotDIGO ($/MW-Month) Nov-25 Dec-25 Summer (Dec. Feb.) 7,256,568 7,401,699 Winter (Jun. – Aug.) 7,256,568 7,401,699 Others (Mar. – May & Sep. Nov.) 5,442,428 5,551,277 Hydrological Generators The prices for the Available Power, in $/MW-month, for hydrological generators under SE Resolution No. 438/25, are as follows: Hydrological – Technology / Scale PrecPotDIGO ($/MW-Month) Nov-25 Dec-25 Large HI > 300 MW 1,995,562 2.035.473 Medium HI > 120 MW & ≤ 300 MW 2,904,971 2,963,070 Small HI > 50 MW & ≤ 120 MW 4,206,418 4,290,546 Renewable HI ≤ 50 MW 7,288,122 8,745,746 Large HB pumping units with power P > 300 MW 1,995,562 2,035,473 101 Table of Contents Remuneration for Energy Generated Thermal Generators - Price of Energy Generated. For conventional thermal generation, the following shall be recognized as the maximum, by type of fuel consumed by the generating unit “g”, the variable non-fuel costs [CostoOYMxComb] indicated in the following table for the energy delivered each hour: Fuel Nov. - 25 Dec. - 25 Natural gas 4,842 4,939 FO or GO 8,473 8,642 Biofuels in general 12,095 12,337 Mineral coal 14,514 14,804 Hydrological Generators - Price of the Energy Generated. The price per unit of energy generated shall be recognized hourly as follows: Nov. - 25 Dec. - 25 National Hydraulics and Pumping 4,232 4,317 Binational Salto Grande 6,960 7,099 Remuneration for Energy Operated Generators will receive monthly remuneration for the Energy Operated, represented by the integration of hourly power during the period, valued at: Nov. - 25 Dec. - 25 Thermal 1,684 1,718 Hidrologycal National 1,684 1,718 Hydraulics and Pumping 1,684 1,718 Salto Grande 0 0 102 Table of Contents Remuneration scheme for generator covered by SE Resolution No. 400/25 All generation not committed under contracts or not allocated to supply the Seasonal Demand of WEM Distributors (DEDMEM) is considered Spot Generation, meaning energy available for commercialization in the Spot Market under the dispatch and remuneration rules established by the resolution. Remuneration of Thermal Generation Energy Thermal generation operating in the Spot Market is dispatched and therefore remunerated based on the declared Variable Production Cost (CVP) and an Adapted Marginal Rent (RMA), calculated as: Hourly Price = CVP + [(CMgh × FP – CVP) × FRA], where CMgh is the hourly marginal cost, FP the loss factor, and FRA a progressive factor: Year FRA 2025 0.15 2026 0.15 2027 0.25 2028 onwards 0.35 For new generation units, those that entered commercial operations as of January 1, 2025, and thermal units with firm natural gas transport, the Adapted Rent Factor (FRA) is set at 1. If a generator does not have its own fuel supply, its FRA will be zero, and the CVP will be based on reference values. Generators using CAMMESA’s “GN Agreement” apply an additional correction factor (FRC) to the Adapted Marginal Rent (RMA): Year FRC 2025 0.8 2026 0.8 2027 0.6 2028 onwards 0.5 For existing generation units, those that entered commercial operations prior to January 1, 2025, the resulting Adapted Marginal Rent (RMA) values will have the following minimums at the plant level —RMIN in U.S.$/MWh— evaluated hourly based on the unit’s declared CVP. RMIN CVP < 60u$s/MWh RMIN CVP >= 60u$s/MWh 2 7 For new generation units, those that entered commercial operations as of January 1, 2025, the Adapted Marginal Rent (RMA) will have no minimum or maximum limits, and the Adapted Rent Factor (FRA) will be set at 1. When these generators manage their natural gas supply through CAMMESA’s “GN Agreement,” the RMA calculation will apply the correction factor (FRC) indicated in the resolution. Thermal generation dispatched for operational reasons or local restrictions will only be recognized at its declared Variable Production Cost (CVP) and recovered through Spot Market prices. Monthly remuneration is determined based on actual generation and hourly prices. Fuel declarations for own gas or alternative fuels are binding; if a generator fails to provide the committed volume when dispatched, a Deliver-or-Pay penalty of 70% of the declared value applies, with exceptions for deviations up to 20% or justified causes beyond the generator’s control. 103 Table of Contents Remuneration of Renewable Energy and Self-Generators Remuneration for renewable generation in the Spot Market follows a scheme similar to thermal generation, with CVP equal to zero. For renewable units with commercial operation before December 31, 2024, Adapted Rent Factors (FRA) evolve annually as for existing thermal generation, and the Adapted Marginal Rent (RMA) has a minimum of U.S.$ 32/MWh. Renewable generation starting from January 1, 2025, applies FRA = 1 with no minimum or maximum limits for RMA. Biomass, biogas, or BRS-based renewable units may request dispatch under thermal generation conditions. Industrial self-generators offering surplus energy are treated as CVP = 0 with FRA evolution similar to thermal generation, while self-generators and co-generators offering firm capacity must declare CVP and receive the same treatment as thermal generators. Remuneration of hydroelectric generators This remuneration follows a scheme similar to thermal generation remuneration, with CVP equal to zero. For existing hydro units (before January 1, 2025), Adapted Rent Factors (FRA) evolve annually as for thermal generation, and the Adapted Marginal Rent (RMA) has a minimum of U.S.$ 22/MWh. New hydro generation (from January 1, 2025) applies FRA = 1 with no minimum or maximum limits for RMA. Pumped-storage plants follow the same conditions for hydro generation, with remuneration based on pumping demand cost and adapted marginal rent, applying FRA evolution and a minimum RMA of U.S.$ 22/MWh. Remuneration of Energy Storage Energy storage plants operating in the Spot Market earn revenue through price arbitrage between charging and discharging. Both charging cost and discharge remuneration are calculated as CMgh × FP, where CMgh is the hourly marginal cost and FP the loss factor. Dispatch for charging and discharging is coordinated with CAMMESA in weekly or daily scheduling, and storage units may also participate in the Term Market as demand (charging) and as generation (discharging). Remuneration of Thermal Generation Capacity During Hours of Capacity Remuneration (HRP), thermal generators are eligible for capacity payments (Potencia Puesta a Disposición – PPAD) provided they declare fuel self-management. A unit is considered available if it reports fuel management and equipment availability in all scheduling stages. Alternative fuel availability is monitored under the current SCOMB scheme. For units capable of operating with both natural gas and alternative fuels, if fuel management is declared only for natural gas, capacity will be remunerated as “with fuel management” for summer and mid-season months, and as “without fuel management” for winter months. Capacity remuneration applies during Hours of Capacity Remuneration (HRP), about 90 hours per week, when the unit is available. The hourly price for Potencia Puesta a Disposición (PPAD) is set at U.S.$ 12/MW, adjusted by seasonal and fuel-type multipliers (KP): Year PPAD KP – Capacity Multiplier THERM. NG THERM. NG+ALT November 25 onwards 12 U.S.$. /MW Win/Sum: 1.1 Rest: 0.9 Win/Sum: 1.5 Rest: 1 During the transition, units without fuel self-management receive reduced payments when not dispatched: Until Dec 2026: 80% of PPAD; Until Dec 2027: 40% of PPAD; and From Jan 2028: only when dispatched. Existing reliability commitments under SE Resolutions No. 59/23 and No. 294/24 remain in force. 104 Table of Contents Remuneration of Hydro, Renewable, and Storage Capacity During Hours of Capacity Remuneration (HRP), these technologies shall receive payments for Potencia Puesta a Disposición (PPAD) at a base price of U.S.$ 12/MW, applying technology-specific multipliers (KP): Year PPAD KP – Capacity Multiplier HYDRO RENEWABLE STORAGE November 25 onwards 12 U.S.$./ MW 0.5 0 Win/Sum: 1.1 Rest: 0.9 The capacity to be remunerated for hydro plants corresponds to their available installed capacity. Pumped-storage plants follow the same rules as conventional hydro generation. Storage plants receive capacity payments based on available capacity and validated storage hours (HAV). For each HRP, the recognized capacity is the actual available storage capacity, up to the commercially enabled limit. The application factor for PPAD pricing depends on HAV: i) HAV ≥ 4 hours: factor = 1; ii) HAV between 1 and 4 hours: factor = HAV ÷ 4 and iii) HAV < 1 hour: factor = 0. Differential Remuneration for Conventional Energy SE Resolution No. 1,281/06: Energy Plus Program In September 2006, the SEE issued Resolution No. 1281/06 in an effort to respond to the sustained increase in energy demand following Argentina’s economic recovery after the crisis. This resolution sought to create incentives for energy generation plants in order to meet increasing energy needs. The resolution’s principal objective is to ensure that energy available in the market is used primarily to service residential users and industrial and commercial users whose energy demand is equal to or below 300 kW and who do not have access to other viable energy alternatives. To achieve this, the resolution provided that: · large users in the wholesale electricity market and large customers of distribution companies (in both cases above 300 kilowatts) will be authorized to secure energy supply up to their “base demand” (equal to their demand in 2005) by entering term contracts; and · large users in the wholesale electricity market and large customers of distribution companies (in both cases above 300 kilowatts) must satisfy any consumption in excess of their base demand with energy from the Energía Plus system at prices that had to be approved by the ME&M. The Energía Plus system consists of the supply of additional energy generation from new generation and/or generating agents, co-generators or auto-generators that are not agents of the electricity market or who as of the date of the resolution were not part of the WEM. 105 Table of Contents The resolution also established the price large users were required to pay for excess demand, if not previously contracted under Energía Plus, a price closer to the marginal cost of operations. This marginal cost is equal to the generation cost of the last generation unit transmitted to supply the incremental demand for electricity at any given time. The SEE established certain temporary price caps to be paid by large users for any excess demand (as of the date of this annual report, Ps.1200 for GUMEs and GUMAs and Ps.0 per MWh for GUDIs). On January 28, 2025, the SE issued Resolution 21/25 which changed the regulations of the dispatch and operation of the Term Market (MAT) of the Wholesale Electricity Market (WEM). Regarding the Energy Plus market, it established October 31, 2025 as a deadline for the execution of new contracts or the renewal of supply agreements under Energy Plus Contracts. Consequently, as of November 2025, we were unable to execute new contracts upon the termination of those in force at such date. Our revenues could be affected if we cannot contract the capacity and energy under the new regulatory schemes. WEM Supply Agreements under SE Resolution No. 220/07 Aiming to modify the market conditions to encourage new investments and increase the generation supply, the SE passed Resolution No. 220/07, which empowers CAMMESA to enter into “WEM Supply Commitment Agreements” with WEM Generating Agents for the energy produced with new generation equipment. These are long-term U.S. Dollar-denominated PPAs, and the price payable by CAMMESA should compensate the investment made by the agent at a rate of return to be accepted by the SE. CTLL, CTP and CTEB have entered into agreements with CAMMESA under this Resolution, which account for a gross power capacity of 856 MW. Within the framework of these regulations, during 2021 the PPAs of CTP (30 MW) and CTLL’s TV01 (180 MW) completed the 10-year contractual term. Moreover, on April 2022, the PPA that remunerated CTEB’s gas turbines ended. As of such dates, the units have been remunerated under the spot scheme described above. Therefore, as of the date of this annual report, only part of CTLL’s TG04 gas turbine capacity (79 MW) and CTEB’s vapor turbine, are remunerated under this scheme. WEM Supply Agreements under SEE Resolution No. 21/16 As a result of the state of emergency in the national electricity sector declared by Decree No. 134/15, on March 22, 2016 the SEE issued Resolution No. 21/16 launching a call for bids for new thermal power generation capacity with the commitment to making it available through the WEM for the summer 2016/2017, winter 2017, and summer 2017/2018 periods. Awarded bidders entered PPAs for a fixed price (in U.S.$/MW-month) and a variable price excluding fuels (in U.S.$/MWh) with CAMMESA, which acted on behalf of distributors and WEM’s GU. We were awarded the installation of GT05 in CTLL for 105 MW and the construction of CTIW for a 100 MW capacity, both of which have been in service since August and December 2017, respectively. Furthermore, we acquired and developed CTPP for a 100 MW capacity, which was commissioned for service in August 2017. SEE Resolution No. 287/17: Co-generation and CC Projects On May 10, 2017, the SEE issued Resolution No. 287/17 launching a call for bids for co-generation projects and the closing to CC over existing equipment. The projects should have low specific consumption (lower than 1,680 kcal/kWh operating on natural gas and 1,820 kcal/kWh operating with alternative liquid fuels), and the new capacity should not increase electricity transmission needs beyond the existing capacity; otherwise, the cost of the necessary extensions would be borne by the bidder. Awarded projects were remunerated under a PPA for a term of 15 years. The remuneration is made up of the available power capacity price plus the variable non-fuel cost for the delivered energy and the fuel cost (if offered), less penalties and fuel surpluses. Power capacity surpluses would be remunerated as legacy capacity. Within this framework, in September 2017, the SEE issued Resolution No. 820/17 awarding only three co-generation projects for a 506 MW power capacity, and, in October 2017, pursuant to Resolution No. 926/17, it awarded projects for a total 1,304 MW power capacity, where Pampa was awarded with Genelba 106 Table of Contents Plus’ closing to CC for a 383 MW capacity. Commercial operations at open cycle started in June 2019, and its commissioning at closed cycle started in July 2020. Thereafter, SRRYME Resolution No. 25/19 authorized awardees of projects under SEE Resolution No. 287/17 to submit a new scheduled commissioning date, which will operate as the new committed commissioning date under the PPAs, with a limit of 180 days beginning on the originally committed commissioning date. However, Pampa ratified Genelba Plus CC’s commercial commissioning date. As described above, SE Resolution No. 354/20 allows generators with PPAs under SEE Resolution 287/17 to assign the operation of the natural gas volumes and transport capacity of their contracts for the supply of the power plants with contracts under the latter resolution. The Company proceeded with such assignment, and an amendment to the PPA must therefore be executed. Even though the SE Resolution No. 21/25 repealed the SE Resolution No. 354/20, CAMMESA will continue to provide the natural gas necessary for the operation of Genelba Plus combined cycle. SEE Resolution No. 59/23: Remuneration for combined cycles On February 7, 2023, the SE issued Resolution No. 59/23, which established a regime pursuant to which the owners of combined cycle plants may adhere to and sign an Availability and Efficiency Improvement Agreement (Availability Agreement) with CAMMESA. The Availability Agreement contemplates an availability commitment of 85% of the net capacity for a maximum term of 5 years. In consideration for such availability commitment the generator shall collect U.S.$ 2,000/MW-months and the dollarization of energy prices (U.S.$3.5/MWh for natural gas and U.S.$6.1/MWh for FO and GO). It also provides for a 35% reduction in the remuneration to be received by the power plant for the power offered DIGO under SE Resolution No. 826/22 scheme in the months of December, January, February, June, July and August and 15% in the remaining months of the year. The agent interested in joining the program must submit its application within 90 calendar days to CAMMESA. The SE, through note NO-2023-28679610-APN-SE#MEC, instructed CAMMESA with certain changes in the application criteria: i. It allowed CAMMESA to contract the supply of capacity and energy from combined cycles not committed in other contracts. Combined cycles associated with industrial or commercial demand are excluded. ii. It established, regarding energy remuneration, that in hours when the generation unit is dispatched outside CAMMESA’s optimal dispatch for operational reasons not attributable to forced generation due to transportation, voltage control, or security requirements, the remuneration will be equal to 60% of the net installed power, regardless of the energy delivered by the generation unit. iii. It corrected the dates to be used for the adjustment in the applicable exchange rate, and therefore, the exchange rate at the closing of the business day prior to the expiration of the transaction will be used. iv. The generator may request the termination of the contract if the complementary remuneration derived from SE Resolution No. 826/22 or amendments thereto does not reflect the variation of the generation costs. The termination will depend on the analysis and acceptance of the SE. Within the framework of this resolution, in April 2023, Pampa executed two PPAs for GENELBA and CTLL combined cycles. Additionally, CTB also executed a PPA for its combined cycle. Following the publication of SE Resolution No. 400/25 in November 2025, Pampa requested to adhere to the new Spot Market framework under the established conditions and prices. In this context, Pampa suspended the PPAs relating to the combined cycles of CTGEBA, CTLL and CTB. Consequently, the obligations arising from adherence to SE Resolution No. 59/23 will remain suspended as long as the conditions established in SE Resolution No. 400/25 remain unchanged. 107 Table of Contents Contingency and Forecast Plan for Energy Supply in Critical Months The SE, through Resolution No. 294/24, established a “Contingency and Forecast Plan for Critical Months of 2024/2026” with the aim of avoiding, reducing or mitigating the critical energy supply condition for the critical days of the following years. The plan identifies different measures for the different segments of the industry. Regarding electricity generation, it includes an additional remuneration based on the available capacity and generation to promote the availability of thermal generation in the critical months and hours between December 2024 to March 2026. This scheme may be extended by the Undersecretariat of Electrical Energy for a further 12 months term, subject to the filling of a maintenance program for each generating unit. The remuneration scheme provides (i) a capacity remuneration of U.S.$ 2,000/MW-month, adjusted by a criticality factor that takes into account the node where the generating unit is located and the actual availability of the unit during the most critical hours, and 50% of this remuneration for the capacity in excess of the committed capacity; and (ii) a generated energy remuneration , which varies between U.S.$ 3.4/MWh and U.S.$ 10.5/MWh, depending on the fuel used and the generation technology. On the other hand, it instructed CAMMESA to implement an exceptional dispatch procedure that will allow the strategic use of generation units to reduce the risk of supply restrictions during peak hours. Such a procedure may include the possibility of reserving the dispatch of the remaining operating hours of those units that are nearing the end of their useful life, in order to allow their use during periods of maximum demand. Within the framework of these regulations, on November 20, 2024, Pampa adhered to such scheme for the relevant units of CPB, CTG, CT Piquirenda, CTLL, CTGEBA and Ecoenergía, effective from 1 December 2024 until 31 March 2026. On May 26, 2025, CPB submitted a formal request for a 12-months extension of the complementary remuneration scheme, applicable to CPB’s generating units BBLATV20 and BBLATV30. This request was approved on December 4, 2025, by the SE through Note No. NO-2025-114019713-APN-SSEE#MEC. In addition, in December 2025, requests were submitted to extend the remuneration scheme for 12 months for the following assets: CTP, CTLL, CTGEBA, ECOENERGIA and CTG. Such requests were approved on January 21, 2026, by the SE through Notes No. NO-2026-05311855-APN-SSEE#MEC; NO-2026-05311697-APN-SSEE#MEC; NO-2026-05310868-APN-SSEE#MEC; NO-2026-05311127-APN-SSEE#MEC and NO-2026-05311398-APN-SSEE#MEC, respectively. SE Resolution No. 976/23: New charges for GUDIs On December 2, 2023, the SEE issued Resolution No. 976/23, which stipulated that starting February 2024, CAMMESA must invoice the Distributor Agents and/or service providers of the WEM and the MEMSTDF for new charges: the “GUDIs Stabilized Charge” and the “GUDIs Complementary Power Adjustment”. This information must be published in the monthly DTE so that each WEM and/or MEMSTDF Provider can directly transfer the “GUDIs Stabilized Charge” and the “GUDIs Complementary Power Adjustment” to their clients’ invoices. On March 27, 2024, by ENRE Resolution No. 197/24, the ENRE authorized EDENOR and EDESUR to include such charges in the invoices of its relevant clients. Differential Remuneration for Renewable Energy Measures for the Promotion of Renewable Energy Projects In October 2015, Law No. 27,191 (regulated by Decree No. 531/16) was passed, which amends Law No. 26,190 on the promotion of renewable sources of energy. Among others, it provided that by December 31, 2025, 20% of the total demand for energy in Argentina should be covered with renewable sources of energy. To achieve such objective, WEM’s GU and CAMMESA should cover 8% of their demand with such sources by December 31, 2017, the percentage rising every two years until the objective is met. The agreements entered into with GU and GUDI may not have an average price exceeding U.S.$113/MWh. 108 Table of Contents Additionally, the law provides for several incentives to encourage the construction of renewable energy projects, including tax benefits (advance VAT return, accelerated depreciation on the income tax return, import duty exemptions, etc.) and the creation of the FODER, which is destined, among other objectives, to the granting of loans, capital contributions, etc., for the financing of these projects. RenovAr Program ME&M Resolution No. 71/16 issued in May 2016 launched the RenovAr (Round 1) Program’s open call for tenders. In October 2016 and pursuant to Resolution No. 213/16, the ME&M awarded 29 projects for a total 1,142 MW (97% of which were wind and solar energy projects). Additionally, in October 2016 ME&M Resolution No. 252/16 was issued launching the RenovAr (Round 1.5) Program’s call for tenders, and the following month ME&M Resolution No. 281/16 was issued, whereby 30 projects for a total 1,281.5 MW (100% which use wind and solar energy projects) were awarded. Furthermore, in August 2017 ME&M Resolution No. 275/17 was issued launching the RenovAr (Round 2) Program’s call for tenders, and in December 2017 ME&M Resolutions No. 473/17 and 488/17 were issued, whereby 88 projects for a total 2,043 MW (89% of them wind and solar energy projects) were awarded. Finally, in November 2018, SGE Resolution No. 100/18 launched the RenovAr MiniRen (Round 3) Program’s call for tenders for smaller-scope renewable projects (between 0.5 and 10 MW) contemplating its connection to the facilities of the distribution company corresponding to the location, with a maximum 400 MW facility, of which 350 MW are wind and solar energy projects. SSEERR Resolution No. 91/19 awarded projects for a total capacity of 246MW under RenovAr round 3. In all projects under the RenovAr rounds, any and all reductions of greenhouse-gas emissions resulting from the power capacity installed throughout the national territory, including that resulting from any other project accounted for to reach the WEM’s renewable power capacity goals set in Law No. 27,191, will be recognized by the Argentine Government towards the fulfillment of the contribution goal under the United Nations Framework Convention on Climate Change and the Paris Agreement. During 2021, several changes were introduced to the RenovAr Program by the SE Resolution No. 742/21 that modified the penalties scheme. Under such modifications the penalties for breach of supply commitments may be cancelled in installments. Additionally, an extra term was granted to the projects that experienced a delay in the entry into commercial operations committed date. Depending on the term granted to the project the term of the PPA with CAMMESA and the penalties to be paid during such extra term vary. Moreover, in order to increase transport capacity, SE Resolution No. 1260/21 approved a scheme that allowed the owners of the projects that did not meet the entry into commercial operations committed date to terminate their commitments with CAMMESA by means of payment of a penalty (equivalent to U.S.$ 17,500/MW for wind and solar projects and U.S.$ 12,500/MW for other technologies) and the fulfillment of other conditions. Alternatively, the owners of such projects could: (i) request an extension of the entry into commercial operations committed date in which case the term and price of the relevant PPA would be reduced; or (ii) reduce the project capacity (RenovAr 3 projects are not eligible for this option). In each case, the owner of the project must present a waiver to file any and all claims against the SE, CAMMESA, etc., for damages derived from the chosen alternative. On March 20, 2023, SE Resolution No. 165/23 (“Resolution 165”) amended Article 1 of SE Resolution No. 285/18 (previously amended by SE Resolution No. 742/21), in connection with the applicable monthly payment cap of penalties foreseen under the power purchase agreements from renewable sources executed under the RenovAr Program Rounds 1, 1.5, 2 and 3 and Resolution No. 202/16. On April 25, 2023, SE Resolution No. 284/23 established a new scheme allowing for RenovAr Rounds 2 and 3 projects with delays, to terminate the PPA executed with CAMMESA upon the payment of a termination fee equal to U.S.$ 35,000/MW and a waiver (i) of any claims against the Federal Government, the SE and CAMMESA and (ii) any tax benefit obtained but not applied to the project. 109 Table of Contents In November 2023, SE Resolution No. 883/23 was approved, which established a compensation mechanism for penalties under the Renewable PPAs provided that the amounts to be compensated are invested in new renewable generation capacity. The owners of the projects that request the compensation will have a term of 36 months for the installation of the new renewable power and the new capacity will be remunerated by one of the following options: (i) 100% of the energy generated to be remunerated at a price equal to U.S.$ 20/MWh for a 60-month term; (ii) 20% of the energy generated to be remunerated at a price equal to U.S.$ 20/MWh for a 120-month term and the remaining 80% to be sold either in the MAT, self-consumption, reserved to compensate future penalties or at the spot market; or (iii) 20% of the energy generated to be remunerated at a price equal to U.S.$ 20/MWh for a 180-month term and the remaining 80% to be sold either in the MAT, self-consumption, reserved to compensate future penalties or at the spot market. As of today, PEA is the only asset with a PPA under the RenovAr regime. MATER ME&M Resolution No. 281/17 issued on August 18, 2017 regulated the MATER regime, which set the conditions for WEM GU and GUDI to meet their demand supply obligation from renewable sources through the individual purchase within the MATER or through self-generation from renewable sources. Furthermore, this Resolution regulates the conditions applicable to renewable power generation projects. Specifically, it created the RENPER, where such projects will be registered. Projects destined to supply the MATER may not be committed under other remuneration mechanisms (e.g., the RenovAr program). Surplus energy exceeding commitments with CAMMESA are remunerated until 10% of the generation at the minimum price for the technology covered by the RenovAr Program, and the balance, at the remuneration value for that type of technology set in SEE Resolution No. 19/17. Furthermore, agreements executed under the MATER regime will be administered and managed in accordance with the WEM procedures. The contractual terms term, allocation priorities, prices and other conditions, notwithstanding the maximum price set forth in Section 9 of Law No. 27,191, may be freely agreed between the parties, although the committed electricity volumes will be limited by the power from renewable sources produced by the generator or supplied by other generators or suppliers with which it has purchase agreements in place. We registered the PEPE II, III, IV and VI projects with the RENPER. We also requested the corresponding priority dispatch which was subsequently granted. However, it is worth highlighting that SE Resolution No. 14/22, issued in January 2022, modified the tie-breaking criteria when there is more than one project requesting dispatch priority and the relevant corridor does not have enough transport capacity. The new scheme replaced the original criteria (term, use factor and draw), and instead requires a multiplying factor to be applied on the amounts to be paid to reserve such dispatch priority as established in SE Resolution No. 551/21. SE Resolution No. 551/21 replaced the guarantee grant to reserve dispatch priority for a scheme in which payments are made according to the extension of time and the completion of the work. During the committed term a U.S.$500/MW quarterly payment applies. In case of an extension for an additional 180 calendar days with work completed by least 60% the payments will continue to be quarterly and for a U.S.$500/MW amount. If the work is completed by less than 60% the payments will be monthly. For an extra extension of 360 calendar days the payments will raise to U.S.$1500/MW monthly. In May 2023, SE Resolution 360/23 introduced reforms to the regime for granting Dispatch Priority, with key highlights including: (i) projects of the GENREN Program can participate in the MATER Regime once their contracts are finalized; (ii) the assignment of dispatch priority to joint projects of incremental demand with new renewable generation as from 10MW is allowed; (iii) projects with partial qualification will pay a dispatch priority charge only for the difference between the assigned and qualified power as long as the qualified power is greater than 50% of the assigned power; (iv) possibility of granting Dispatch Priority called “Referential type A” in corridors without full availability in all hours of the year; and (v) projects with enabled power above their dispatch priority may adhere to the regime to be included in the allocation for the difference. 110 Table of Contents Under these regulations, the following projects are remunerated: PEPE II, III (53.2 MW each), IV (81 MW) and PEPE VI (140 MW). The energy produced is marketed through PPAs in U.S.$-linked contracts with private parties, with a weighted average term of approximately 5 years. The energy not commercialized under PPAs with Large User will be sold to the Spot Market under SE Resolution No. 400/25. In addition to its own generation, Pampa commercializes renewable energy generated by third parties, with the volume in 2025 averaging 10.9 GWh, contributing to the margin in the MATER segment. WEM Agents payments to CAMMESA SRRYME Resolution No. 29/19 relaxed the charges and interest rates applicable to WEM agent in default with CAMMESA. i. Punitive charges: to those WEM agents with no outstanding balance against CAMMESA in the last three months, the charge for default will be equal to 1% of the debt for each day with a cap. ii. Default Interests rates: If the WEM agent have duly paid the last three payments to CAMMESA prior to the month in default, no punitive charges shall apply and the interest rate shall be equal to that fixed by Banco de la Nación Argentina for its 30-day discount operations, provided that the payment is made within 15 days from its due date. iii. Compensation: in the case of delays not exceeding 5 days in a certain month, compensations without the application of compensatory interest are allowed by advancing the payment of the following invoice by 2 days per day of delay. iv. Charges reduction extension: SRRYME Resolution No. 29/19 extended the 50% reduction in the charges applicable to WEM agents with outstanding debt against CAMMESA until April 30, 2020. SE Resolution No. 148/20 extended the application of SRRYME Resolution No. 29/19 until December 31, 2020. Additionally, on April 8, 2020, the SE instructed CAMMESA to implement an extraordinary payment mechanism for WEM agents affected by the Covid-19 related quarantine. According to such mechanisms, WEM agents may partially cancel their energy supply according to the impact on their sales and postpone the payment of the remaining balance for a period between 15 days to 6 months. Such amounts shall not accrue charges nor interest. This mechanism applies to the energy supplies due from April 1, 2020 to 60 days after the abrogation of the Covid-19 isolation. During 2020, there was no adjustment to the prices set forth in SE Resolution No. 31/20. Moreover, Law No. 27,591 and SE Resolution No. 40/20 defined a scheme according to which the Argentine Government will cover up to 66% of the distributors’ debt to CAMMESA. The remaining amounts will be cancelled in 60 monthly installments with a 6-months grace period and a reduced interest rate (50% of the WEM’s interest rate). In order to apply for such scheme, the distributor, together with its relevant regulatory body, shall execute an agreement with the SE in which, among other obligations, it shall guarantee a scheme that allows the distributor to regularly pay the amounts due to CAMMESA in 2021 and provide adequate guarantees (e.g., assignment of the amounts owed to the distributor by its clients). In case the distributor has no debt, or if it is “reasonable”, then credits will be recognized. Such credits might be designated for infrastructure investments or widening the distribution network, among other examples. These distributors shall regularly pay the amounts due to CAMMESA. The credits to be recognized under both schemes will be funded by loans from the Unified Fund to the Stabilization Fund, but given that such fund is deficient, it is expected to be covered by transfers from the Argentine Government. However, these schemes tend to regularize the energy sector cash flow. On March 13, 2025, by means of DNU No. 186/25 a special regime to allow electricity distributors to regularize their accumulated debt by November 30, 2024 was established. The plan also provides a special credit regime for those distributors that, by December 31, 2023, do not have any unregulated debt with CAMMESA and who have cancelled all transactions for 2024, under the conditions established by the regulations. Regulations to this DNU is yet to be issued. 111 Table of Contents
This section contains forward-looking statements that involve risks and uncertainties. Our actual results may differ materially from those discussed in the forward-looking statements as a result of various factors, including, without limitation, those set forth in “Note 6.1 - Cr…
This section contains forward-looking statements that involve risks and uncertainties. Our actual results may differ materially from those discussed in the forward-looking statements as a result of various factors, including, without limitation, those set forth in “Note 6.1 - Critical accounting estimates and judgments” of our Consolidated Financial Statements “Forward-Looking Statements” and “Item 3. Key Information - Risk Factors” and the matters set forth in this annual report generally. The following discussion is based on, and should be read in conjunction with, our Consolidated Financial Statements and related notes contained in this annual report. Sources of Revenues Oil & Gas Our oil and gas operations derive revenues from the sale of natural gas to CAMMESA and gas distributors and from the sale to oil and gas industrial clients in the domestic market and to a lesser extent in the foreign market. Revenues are recognized when the control of these products is transferred. Generation Our generation operations derive revenues from the sale of electricity sales contracts with large users within the MAT, supply agreements with CAMMESA and sales to the spot market. Revenues are recognized when power plants are available and the delivery of energy is effective. Petrochemicals Our petrochemicals operations generate revenues from the sale of styrene, polystyrene and elastomers, and plastics derived from oil production. We produce a wide array of products, such as intermediate gasoline, aromatic solvents, hexane and other hydrogenated paraffinic solvents, propellants for the cosmetic industry, monomer styrene, as well as rubber and polymers for both the domestic and foreign markets from natural gas, virgin naphtha, propane and other supplies. Revenues are recognized when the control of these products is transferred. Holding and others segment Our holding and others segment generate revenues mainly from contracts with customers in relation to technical assistance and administration services to related companies. Factors Affecting Our Results of Operations Our results of operations are principally affected by economic conditions in Argentina, changes in local and international crude oil prices, natural gas prices and international petrochemical product’s prices, fluctuations in demand for oil related products, natural gas and electricity in Argentina, costs of sales, operating expenses and climate change. See “Item 3. Key Information - Risk Factors”. Argentine Economic Conditions Because most of our operations, facilities and customers are located in Argentina, we are affected by general economic conditions in the country. In particular, the general performance of the Argentine economy affects demand for energy, and inflation and fluctuations in currency exchange rates affect our costs and our margins. Inflation primarily affects our business by increasing operating costs, while reducing our revenues in real terms. 112 Table of Contents The following table sets forth key economic indicators in Argentina during the years indicated: Year ended December 31, 2025 2024 2023 Real GDP (% change) 4.4% (1.3)% (1.6)% Nominal GDP (in millions of Ps.) 847,622,873 583,909,615 191,404,997 Real Consumption (% change) 7.9% (2.9)% 1.0% Real Investment (% change) 16.4% (17.2)% (2.0)% Industrial Production (% change) 1.6% (9.4)% (1.8)% Consumer Price Index 31.5% 117.8% 211.4% Nominal Exchange Rate (in Ps. /U.S.$ at year end) 1,455.00 1,032.50 808.48 Exports (in millions of U.S.$) 87,111 79,703 66,789 Imports (in millions of U.S.$) 75,791 60,776 73,714 Trade Balance (in millions of U.S.$) 11,320.08 18,927.64 (6,925.1) Current Account (% of GDP) (1.5)% ** 0.9% (3.2)% Reserves (in millions of U.S.$) 41.1 29.6 23.1 Tax Collection (in millions of Pesos) 200,448,447 142,031,453 46,463,191 Primary Surplus (in millions of Pesos) 11,769,219 10,405,810 (5,164,637) Public Debt (% of GDP at December 31) * 75.6% ** 82.6% 156.6% Public Debt Service (% of GDP) 1.2% 1.5% 1.7% External Debt (% of GDP at December 31) 56.3% ** 49.0% 121.6% Sources: INDEC; Central Bank; Ministry of Treasury. *Includes hold-outs ** As of September 30, 2025. *** As of November 2025. 113 Table of Contents Macroeconomic Context 2025 was marked by high volatility associated with the economic cycle and midterm elections. This dynamic was reflected in financial markets. Argentina’s country risk began the year at around 578 basis points, peaked at 1,456 in September, and ended the year close to its initial level. Likewise, the wholesale exchange rate closed at Pesos 1,459 per U.S.$ as of December 2025, up 41% from year-end 2024 and 36% year-on-year. Despite the challenging environment, the Government maintained a fiscal surplus for the second consecutive year, a cornerstone of its economic plan. In 2025, the accumulated primary balance reached 1.4% of GDP and the financial balance 0.2% of the GDP. As a result, inflation continued on a downward path and ended the year at 31.5% annually, the lowest level since 2017, following 117.8% in 2024 and 211.4% in 2023. According to the Central Bank’s Market Expectations Survey (REM), inflation is expected to continue decelerating and hover around 20% in 2026, consolidating the price normalization process. Disinflation also led to a reduction in the poverty rate, which fell from 53% in the first quarter of 2024 to 30% in 2025. Even amid persistent fiscal adjustment, economic activity grew by 4.6% through the third quarter of 2025 and, according to the REM, is projected to grow by 3.4% in 2026. However, sector performance was heterogeneous: fishing, mining, oil and gas, and financial intermediation led economic expansion, while construction, trade, and manufacturing recorded cumulative declines of 2.2%, 5.7%, and 6.6%, respectively, through September, posing challenges going forward. Nevertheless, the unemployment rate remained stable at around 7.6%. On the exchange rate front, in February 2025, the crawling peg pace was reduced from 2% to 1% per month. In April, a banded floating exchange rate regime was adopted, with bands widening by 1% per month, and the BCRA was authorized to intervene within them. In addition, exchange rate controls for individuals were partially lifted, the distribution of dividends on 2025 earnings was authorized, import payment terms were relaxed, and the differential exchange rate for exports was eliminated, measures that narrowed the gap between the official and free exchange rates. In April 2025, an agreement for U.S.$ 20 billion was signed with the IMF, including disbursements of U.S.$ 14.5 billion in 2025, complemented by financing from multilateral organizations. Following exchange rate pressures triggered by an adverse outcome for the ruling party in the Buenos Aires Province elections, the National Government received explicit support from the U.S. Treasury for its policies, which intervened by purchasing Pesos and providing U.S.$ 20 billion in financing. This support proved decisive in preserving the exchange rate regime. Starting in 2026, the exchange rate bands will be adjusted based on monthly inflation with a two-month lag. Given limited access to international capital markets, the Argentine Treasury continued to repay obligations to creditors. Consolidated gross national debt declined from 169% of GDP in December 2023 to 79% in October 2025, while foreign-currency debt with private creditors fell from 40% to 16% over the same period. These repayments were supported by record foreign currency purchases by the BCRA (U.S.$ 22 billion over two years) and the Treasury (U.S.$ 1.5 billion), as well as by an increase in gross reserves, which rose to U.S.$ 41.2 billion from U.S.$ 23 billion in December 2023. However, net reserves remained negative at -U.S.$ 15.5 billion, compared with -U.S.$ 8.5 billion in December 2023. During 2025, the BCRA eliminated interest-bearing liabilities (monetary issuance), and the Argentine Treasury canceled non-transferable notes, strengthening its balance sheet and generating a crowding-in effect that boosted private-sector credit from 5% to 11% of GDP. The current account posted a cumulative deficit of U.S.$ 10 billion through the third quarter of 2025, compared to a surplus of U.S.$ 5 billion in the same period of 2024. While the goods trade balance recorded a surplus driven by record exports, partially offset by higher imports, deficits in services and income resulted in an overall negative balance. In the trade balance, the energy sector stands out with a surplus of U.S.$ 7.8 billion, supported by all-time highs in gas and oil production driven by the development of Vaca Muerta. The Argentine corporate sector increased its access to international markets, with issuances exceeding U.S.$ 9.3 billion. Finally, after two years, the National Congress approved the 2026 budget, representing an institutional step forward that, among other aspects, authorizes the Argentine Treasury to resume financing in international capital markets. 114 Table of Contents Reserves and Production of oil and gas Natural gas and oil constitute the main energy sources in the national primary energy matrix. The following chart illustrates their shares as of December 31, 2024, as there is no available information for the year 2025: 2024 Argentine energy matrix 100% = 83 million Tons of oil equivalent Note: It excludes other primary sources for 5.2%. Source: SE. Natural Gas In 2025, Argentina’s total gross natural gas production amounted to 137 million m3 per day, a 6% increase compared to 2024. This increase is explained by growth in the Austral and Neuquina Basins. Total demand grew by 3% year-on-year to 141 million m3 per day, mainly due to higher industrial demand (14% compared to 2024) and a slight increase in power plants’ gas consumption, partially offset by lower Compressed Natural Gas (CNG) and residential demand due to milder weather. Natural gas imports declined sharply by 44% compared to 2024, supported by new evacuation capacity from Vaca Muerta and the reversal of the Northern gas pipeline. Lower imports from Bolivia (from 3.3 to 0.6 million m3 per day on average in 2025) and reduced Liquefied Natural Gas (LNG) injections (from 4.5 to 3.6 million m3 per day on average in 2025) were recorded. In contrast, exports to Chile increased by 13% to 7.3 million m3 per day, representing 5% of total production in 2025. As of December 31, 2024, the country’s natural gas reserves and resources totaled 2,258 billion m3, a 23% increase compared to 2023. Of the total, 24% were proven reserves, and 83% came from unconventional formations. 115 Table of Contents Evolution of natural gas production, and reserves and resources* In billion m3, 2012-2025 Note: * There is no information on reserves for 2025. Source: SE. Crude Oil In 2025, Argentina’s total oil production reached 794 kbpd, a 13% increase compared to 2024 and the highest since 1999. This growth was led by the Neuquina Basin, where production increased by 21% compared to 2024 following the expansion of evacuation capacity from Vaca Muerta in the Oldelval and Oleoducto Transandino S.A. systems. Of total production, 74% came from the Neuquina Basin (584 kbpd), 23% from the Golfo San Jorge Basin (182 kbpd, a 4% decrease compared to 2024) and the remainder from the Cuyana, Austral and Noroeste Basins (27 kbpd, a 7% decrease compared to 2024). Evolution of oil production, and reserves and resources* In million boe, 2012-2025 Note: * There is no information on reserves for 2025. Source: SE. For information about the regulatory framework of our oil and gas business, see “Item 4. The Argentine Energy Sector - Oil & Gas Regulatory Framework.” 116 Table of Contents Electricity prices and tariffs Our revenues and margins in our electricity generation businesses are substantially dependent on the prices we are able to charge for the electricity sold by our generation plants, as well as the composition of our transmission tariffs. See “Item 4. The Argentine Energy Sector - Electricity Regulatory Framework.” Electricity demand and supply Electricity demand depends to a significant extent on economic and political conditions prevailing from time to time in Argentina, as well as seasonal factors. In general, the demand for electricity varies depending on the performance of the Argentine economy, as businesses and individuals generally consume more energy and are better able to pay their bills during periods of economic stability or growth. As a result, energy demand is affected by Argentine Governmental actions concerning the economy, including with respect to inflation, interest rates, price controls, foreign exchange controls, taxes and energy tariffs. Electricity consumption in Argentina experienced a slight 0.7% increase in 2025 when compared to 2024, reaching 141,249 GWh. This was explained by increases of 2% and 1%, respectively, in the industrial and retail segments, partially offset by a 3% decline in the demand from Large Users within the distribution segment. The following chart shows the breakdown of electricity consumption in 2025 by type of customer. Electricity demand by type of customer Source: CAMMESA. Peak Demand Records 2017 2018 2019 2020 2021 2022 2023 2024 2025 Capacity (MW) 25,628 26,320 26,113 25,791 27,088 28,283 29,105 29,653 30,257 Date Feb-24 Feb-8 Jan-29 Feb-4 Dec-29 Dec-6 Mar-13 Feb-1 Feb-10 Temperature (°C) 27.7 30.2 34.0 29.5 31.7 29.0 31.0 31.5 31.1 Hour 14:25 15:35 14:25 14:57 14:28 14:43 15:28 14:48 14:47 Source: CAMMESA. During 2024, power generation grew by 0.5% in 2025, reaching 142,267 GWh, compared to 141,592 GWh recorded in 2024, mainly driven by renewable sources (a 17% increase compared to 2024) and nuclear power availability (a 3% increase compared to 2024), partially offset by a 10% reduction in hydropower generation, net of pumping. 117 Table of Contents The grid maintained its dependence on thermal generation, using both natural gas and liquid fuels (GO and FO) and mineral coal, contributing 53% of the total energy volume or 75,225 GWh, followed by hydropower generation net of pumping of 29,622 GWh (21% of the total energy volume), renewable energies with a generation of 26,659 GWh (19% of the total energy volume) and nuclear power with a generation of 10,761 GWh or 8% of the total energy volume. Although the SADI has been a net power importer for the fourth consecutive year, in 2025 imports decreased by 8% to 4,304 GWh when compared to 2024, exports decreased by 48% to 509 GWh compared to 2024, and losses were reduced by 5% to 4,813 GWh compared to 2024. The following chart shows the evolution of electric power generation by type of technology: Generation by Type of Power Plant In %, 2015 – 2025 Note: It includes WEM and Patagonian WEM System. Hydroelectric power generation net of pumping. Source: CAMMESA. During 2025, generation facilities recorded an increase in their installed capacity of 826 MW compared to the previous year, reaching a total of 44,177 MW as of December 2025. This increase is mainly due to the commissioning of renewable units ( an increase of 1,006 MW compared to 2024) and 13 MW of thermal additions, offset by the decommissioning of obsolete units ( a decrease of 194 MW compared to 2024). The chart below shows the composition of installed capacity in Argentina as of December 31, 2025: 118 Table of Contents 2025 Argentine installed power capacity 100% = 44.2 GW Source: CAMMESA. Commercial management and fuel supply for power plants were centralized in CAMMESA, except for generators with PPAs under Energía Plus and SE Resolution No. 287/17. Since January 2021, with the implementation of Plan Gas.Ar and the transfer of gas and its transportation by exempted generators to CAMMESA, thermal dispatch prioritized units supplied with gas imported from Bolivia under a Take or Pay condition, followed by those supplied by Plan Gas.Ar according to their efficiency and, finally, units that had assigned gas to CAMMESA. This framework began to change on January 28, 2025, when the SE repealed SE Resolution No. 354/20, effective as of February 1, 2025, and authorized generators to directly manage fuel supply for spot units, as of March 1, 2025, according to SE Resolution No. 21/25. On November 1, 2025, SE Resolution No. 400/25 introduced a gradual transition toward a decentralized fuel-supply scheme. Generators will progressively assume full responsibility for fuel sourcing, and, from 2029, the management must be fully autonomous. Generators must provide their own alternative fuels, such as fuel oil and gas oil. For natural gas, thermal generators may choose between: (i) self procurement, or (ii) contracting through CAMMESA while the Plan Gas.Ar remains in force, under “Gas Acuerdo” (or “Gas Agreement”) modality, with costs resulting from a mix of costs associated with Plan Gas and/or LNG imports, subject to biweekly updates. Generators that do not self procure their fuel will face operational restrictions and a progressive reduction in their capacity and energy remuneration. CAMMESA will continue to centralize fuel management for PPAs under SE Resolutions No. 220/07, No. 21/17, and No. 287/17. This transition process may require significant operational and contractual adjustments and will gradually expose generators to greater market risks and price volatility once centralized procurement ends. Additionally, the SE authorized producers and generators to agree on natural gas supply arrangements, considering the volumes committed under Plan Gas contracts with CAMMESA, according to SE Resolution No. 501/25. Such volumes will be treated as the generators’ own gas and remunerated in accordance with the CVP declared for dispatch purposes. Regarding fuel consumption by power plants, it decreased by 3% year-on-year in 2025, totaling 44.1 million m3 per day of gas equivalent. Natural gas accounted for 95% of total consumption, with a 1% increase to 42.1 million m3 per day, 94% of which was local and 6% imported. The use of liquid fuels, FO and GO, decreased by 61% and 54%, respectively, due to higher domestic gas production, while mineral coal consumption increased by 5%. The chart below shows fuel consumption by type: 119 Table of Contents Fuel consumption by type In % and million m3/day of gas equivalent, 2015 – 2025 Source: CAMMESA. As of December 31, 2025, the maximum spot price of energy in the WEM amounted to Pesos 14,381 (SE Resolution No. 602/25). However, the following chart shows the monthly wholesale price that all electricity system users should pay to prevent the power grid from running into a deficit, as well as the seasonal energy price. The wholesale cost includes, in addition to the energy price, the power capacity payment, generation costs, fuels such as natural gas, FO, GO and mineral coal, and other minor items. As of December 2025, the coverage amounted to 78%. Wholesale monthly cost and seasonal price In U.S.$/MWh Source: CAMMESA, converted into U.S.$ at the official exchange rate. 120 Table of Contents Cost of sales Our most significant costs of sales include purchases of inventory, energy and gas, personnel costs and property, plant and equipment depreciation, works contracts, fees and compensation for services and canons and royalties. Operating expenses Our most significant operating expenses are administrative and selling expenses, which include related personnel costs, fees and compensations for services, transportation and freights charges, and taxes. Results of Operations The table below provides a summary of our results of operations for the years ended December 31, 2025, and 2024. For the year ended December 31, 2025 2024 Revenue 1,998 1,876 Cost of sales (1,369) (1,279) Gross profit 629 597 Selling expenses (98) (74) Administrative expenses (192) (239) Exploration expenses - (21) Other operating income 100 175 Other operating expenses (72) (88) Recovery of impairment (Impairment) of property, plant and equipment, intangible assets and inventories 15 (34) Impairment of financial assets (21) (56) Share of profit from associates and joint ventures 142 146 Profit from sale/acquisition of companies’ interest - 34 Operating income 503 440 Finance income 45 32 Finance costs (196) (185) Other financial results 230 211 Financial results, net 79 58 Profit before income tax 582 498 Income tax (204) 121 Profit of the year 378 619 Total Profit of the year attributable to: Owners of the Company 377 619 Non - controlling interest 1 - 2025 2024 Revenue Oil and Gas 862 730 Generation 792 672 Petrochemical 443 516 Holding and others 24 65 Eliminations (123) (107) Total Revenue 1,998 1,876 Gross profit Oil and Gas 249 215 121 Table of Contents Generation 342 305 Petrochemical 14 29 Holding and others 24 48 Eliminations - - Total Gross profit 629 597 Operating income (loss) Oil and Gas 91 69 Generation 375 204 Petrochemical (31) 43 Holding and others 68 124 Eliminations - - Total operating income 503 440 Total profit (loss) of the year Oil and Gas (55) (5) Generation 298 461 Petrochemical 4 72 Holding and others 131 91 Eliminations - - Total profit of the year 378 619 Total profit (loss) attributable to owners of the company Oil and gas (55) (5) Generation 297 461 Petrochemical 4 72 Holding and others 131 91 Eliminations - - Total profit attributable to owners of the company 377 619 Total profit attributable to non - controlling interest Generation 1 - Total profit attributable to non - controlling interest - - We are a fully integrated power company in Argentina, mainly participating in the oil and gas production and electricity generation businesses. Through its own activities, subsidiaries and shareholdings in joint ventures and based on the business nature, customer portfolio and risks involved, the Company operates its businesses through following reportable segments: ● Oil and Gas, principally consisting of the Company’s interests in oil and gas areas, the activities of Pampa Energía S.A. – Sucursal Dedicada Proyecto RDA and through its direct and indirect interests in SESA and PECSA; ● Electricity Generation, principally consisting of the Company’s direct and indirect interests in HINISA, HIDISA, VAR, CTB, TMB, TJSM and through our own electricity generation activities through thermal plants CTG, CPB, Piquirenda, CTLL, CTGEBA, Ecoenergía, CTPP, CTIW, the HPPL hydroelectric complex and PEPE II, III, IV and VI wind farms; ● Petrochemicals, comprising of the Company’s own styrenics operations and the catalytic reformer plant operations conducted in Argentina; and ● Holding, Transportation and Others, principally consisting of our interests in joint businesses CITELEC, CIESA and their respective subsidiaries holding the concession over high-voltage electricity transmission and gas transportation, respectively, as well as our direct and indirect interest in VMOS, Oldelval and OCP Ltd., holding activities, and other investments activities. 122 Table of Contents We manage our operating segments based on its individual net result in U.S. Dollars. Fiscal year ended December 31, 2025 compared to the fiscal year ended December 31, 2024 Oil and Gas Segment Oil and Gas (in millions of U.S.$) For the fiscal year ended December 31, 2025 December 31, 2024 Variation % Revenue 862 730 132 18% Cost of sales (613) (515) (98) 19% Gross profit 249 215 34 16% Selling expenses (80) (58) (22) 38% Administrative expenses (83) (82) (1) 1% Exploration expenses - (21) 21 (100%) Other operating income and expenses, net 26 59 (33) (56%) Share of profit from associates 3 - 3 100% Impairment of property, plant and equipment (3) (34) 31 (91%) Impairment of financial assets (21) (10) (11) 110% Operating income 91 69 22 32% Financial income - 2 (2) (100%) Financial costs (101) (96) (5) 5% Other financial results (35) (11) (24) 218% Financial results, net (136) (105) (31) 30% Loss before income tax (45) (36) (9) 25% Income tax (10) 31 (41) (132%) Loss of the year (55) (5) (50) 1000% Owners of the Company (55) (5) (50) 1000% Revenue Revenue from our oil and gas segment increased 18%, to U.S.$862 million for the Fiscal year ended December 31, 2025, compared to U.S.$730 million for the Fiscal year ended December 31, 2024. This increase is primarily attributable to the ramp-up of shale oil output at the Rincón de Aranda block, partially offset by lower oil sale prices, and to a lesser extent a decrease in gas volumes and prices. The average sale price for oil was U.S.$61.5/bbl for the fiscal year ended December 31, 2025, 12% lower than the U.S.$70.2/bbl average sale price for the fiscal year ended December 31, 2024, in line with the decrease of the international price of Brent, which is the main reference for the Company’s oil sale prices. The following table shows our production and sales for the oil and gas segment for the years shown: Fiscal year ended December 31, 2025 December 31, 2024 Variation Production Oil (k bbl/day) 11.7 4.8 145% Gas (million m3/day) 12.4 12.5 (1%) Total (k boe/day) 84.4 78.2 8% Sales Oil (k bbl/day) 11.8 5.0 139% Gas (million m3/day) 12.4 12.5 (1%) Total (k boe/day) 84.8 78.3 8% Average prices U.S.$/bbl 61.5 70.2 (12%) U.S.$/MBTU 3.7 3.7 (1%) 123 Table of Contents Cost of Sales The cost of sales from our oil and gas segment increased by 19%, to U.S.$613 million for the Fiscal year ended December 31, 2025, from U.S.$515 million for the Fiscal year ended December 31, 2024. The variation is mainly due to higher lifting costs related to gas treatment expenses and the ramp-up of Rincón de Aranda block; higher property, plant and equipment depreciation, and increased royalties related to higher crude oil production. Gross Profit Gross profit from our oil and gas segment increased by 16%, from U.S.$215 million in the Fiscal year ended December 31, 2024, to U.S.$249 million for the Fiscal year ended December 31, 2025. This variation is mainly explained by the increase in crude oil sale volumes, partially offset by higher costs, weaker gas demand, and lower average oil and gas sale prices. Additionally, the gross margin on sales is 29% for both fiscal years ended December 31, 2025 and 2024. Selling Expenses Selling expenses from our oil and gas segment increased to U.S.$80 million for the Fiscal year ended December 31, 2025, compared to U.S.$58 million for the same period in 2024 due to increased oil and gas transportation expenses, driven by crude oil production growth at Rincon de Aranda block, higher gas production at Sierra Chata block and higher gas exports to Chile. Administrative Expenses Administrative expenses from our oil and gas segment increased to U.S.$83 million for the Fiscal year ended December 31, 2025, compared to U.S.$82 million for the Fiscal year ended December 31, 2024 due to increased fees and compensation for services. Exploration Expenses Exploration expenses from our oil and gas segment recorded U.S.$ 21 million for the fiscal year ended December 31, 2024, corresponding to the impairment of unproductive wells in Rincon del Mangrullo block. No exploration expenses were recorded during the fiscal year ended December 31, 2025. Other Operating Income and Expenses, net Other operating income and expenses, net from our oil and gas segment recorded gains of U.S.$ 26 million for the Fiscal year ended December 31, 2025, compared to U.S.$ 59 million for the Fiscal year ended December 31, 2024, mainly due to lower Plan Gas.Ar’s income, reduced overdue interest and the gain from the sale of the 22.51% share interest in Gobernador Ayala block recorded in 2024. Share of profit from associates The share of profit from associates from our oil and gas segment amounted to U.S.$ 3 million for the Fiscal year ended December 31, 2025 due to our 20% stake in SESA, the company aiming to develop the FLNG Project for LNG export. Impairment of property, plant and equipment Our oil and gas segment recorded an impairment of property, plant and equipment of U.S.$3 million and U.S.$19 million in El Tordillo/La Tapera area for the fiscal years ended December 31, 2025 and 2024, respectively, on October 1, 2025, the Company transferred the 35.6706% interest in the concessions of such blocks and collected U.S.$ 2 million. Additionally, a U.S.$ 15 million impairment was recorded in Rincon del Mangrullo area for the fiscal year ended December 31, 2024. 124 Table of Contents Impairment of financial assets Impairment of financial assets from our oil and gas segment increased to U.S.$21 million for the Fiscal year ended December 31, 2025, compared to U.S.$10 million for the Fiscal year ended December 31, 2024. The current fiscal year charge is mainly attributable to a deterioration in collectability ratios, primarily resulting from increased delays in the collection of receivables from ENARSA. Operating Income The operating income from our oil and gas segment increased by U.S.$22 million (32%) to U.S.$91 million for the Fiscal year ended December 31, 2025 compared to U.S.$69 million for the Fiscal year ended December 31, 2024. The operating margin in relation to sales for the Fiscal year ended December 31, 2025, increased to 11% compared to 9% for the Fiscal year ended December 31, 2024. Financial Results, Net Financial results, net from our oil and gas segment amounted to losses of U.S.$ 136 million for the Fiscal year ended December 31, 2025, compared to U.S.$ 105 million for the Fiscal year ended December 31, 2024, mainly attributable to higher foreign currency exchange losses over the net monetary asset position in Argentine Pesos. Income Tax Our oil and gas segment recorded an income tax charge of U.S.$10 million for the Fiscal year ended December 31, 2025, compared to an income tax benefit of U.S.$31 million for the Fiscal year ended December 31, 2024. The variation is mainly related to a non-cash credit on deferred income tax due to inflation exceeding Peso devaluation for the Fiscal year ended December 31, 2024, while during the current period the inflation and devaluation variables exhibited the opposite behavior. Loss of the year As a result of the foregoing, our oil and gas segment recorded losses of U.S.$55 million for the Fiscal year ended December 31, 2025, compared to U.S.$5 million for the Fiscal year ended December 31, 2024, both of which were entirely attributable to the owners of the Company. Generation Segment Generation (in millions of U.S.$) For the fiscal year ended December 31, 2025 December 31, 2024 Variation % Revenue 792 672 120 18% Cost of sales (450) (367) (83) 23% Gross profit 342 305 37 12% Selling expenses (4) (3) (1) 33% Administrative expenses (42) (52) 10 (19%) Other operating income and expenses, net 12 21 (9) (43%) Share of profit/loss from joint ventures 12 (21) 33 157% Recovery of impairment of property, plant and equipment 55 - 55 100% Impairment of financial assets - (46) 46 (100%) Operating income 375 204 171 84% Financial income 18 8 10 125% Financial costs (46) (53) 7 (13%) Other financial results 168 183 (15) (8%) Financial results, net 140 138 2 1% Profit before income tax 515 342 173 51% Income tax (217) 119 (336) (282%) Profit of the year 298 461 (163) (35%) Owners of the Company 297 461 (164) (36%) Non - controlling interest 1 - 1 100% 125 Table of Contents Revenue Revenue from our generation segment increased by U.S.$120 million, amounting to U.S.$792 million in the Fiscal year ended December 31, 2025, compared to U.S.$672 million in the Fiscal year ended December 31, 2024. This increase is mainly explained by: (i) higher renewable generation due to the commissioning of PEPE VI at the end of 2024; (ii) increased revenues arising from the recognition of fuel self-supply; (iii) higher spot prices driven by new remuneration items added towards the end of 2024, together with the implementation, effective November 1, 2025, of the new spot regime aimed at promoting competition and fuel decentralization (SE Resolution No. 400/25). These effects were partially offset by forced outage at HINISA as a result of the weather-related event that occurred in January 2025. Power generation during the Fiscal year ended December 31, 2025 decreased by 2%, to 16,699 GWh, compared to 17,002 GWh for the Fiscal year ended December 31, 2024, mainly due to lower hydroelectric generation, partially offset by an increase in wind and thermal generation. The following table shows net power generation and sales (in GWh) for our power generation plants: For the fiscal year ended December 31, 2025 December 31, 2024 in GWh Net generation Installed capacity (In Mw) Net generation Installed capacity (In Mw) (In GWh) (In GWh) Hydroelectric 1,360 938 2,363 938 Wind 1,714 427 1,270 427 Thermal 13,625 4,107 13,369 4,107 Total 16,699 5,472 17,002 5,472 Cost of Sales Cost of sales increased by 23% to U.S.$450 million for the Fiscal year ended December 31, 2025, compared to U.S.$367 million for the Fiscal year ended December 31, 2024, mainly explained by higher depreciation of property, plant and equipment, higher maintenance expenses, higher purchases for fuel self-supply. Gross Profit Gross profit from our generation segment increased by 12%, to U.S.$342 million for the Fiscal year ended December 31, 2025, compared to U.S.$305 million for the Fiscal year ended December 31, 2024. The gross margin on sales decreased to 43% for the Fiscal year ended December 31, 2025, compared to 45% for the same period in 2024. Selling Expenses Selling expenses from our generation segment increased to U.S.$4 million for the Fiscal year ended December 31, 2025, compared to U.S.$3 million for the Fiscal year ended December 31, 2024. 126 Table of Contents Administrative Expenses Administrative expenses from our generation segment decreased to U.S.$42 million for the Fiscal year ended December 31, 2025, compared to U.S.$52 million for the Fiscal year ended December 31, 2024, mainly explained by lower labor costs. Other Operating Income and Expenses, Net Other operating income and expenses, net from our generation segment decreased to a U.S.$12 million gain for the Fiscal year ended December 31, 2025, compared to a U.S.$21 million gain for the Fiscal year ended December 31, 2024. This variation is primarily attributable to lower overdue interests with CAMMESA resulting from reduced interest rate and collectability term; partially offset by higher insurance recoveries. Share of profit (loss) from joint ventures The share of profit (loss) from joint ventures in our generation segment amounted to a U.S.$12 million gain for the Fiscal year ended December 31, 2025, compared to a U.S.$21 million loss for the Fiscal year ended December 31, 2024. This variation is mainly explained by the impairment of property, plant and equipment recorded by CTB in 2024, and was partially offset by the loss linked to the non-monetary credit for deferred income tax, driven by the Argentine peso’s devaluation outpacing inflation during 2025. Recovery of impairment of property, plant and equipment Our generation segment recorded a recovery of impairment of property, plant and equipment of U.S.$ 55 million for the fiscal year ended December 31, 2025 in CPB, resulting from the updated estimate of the asset’s recoverable value, reflecting the impact of the new spot pricing regime established by SE Resolution No. 400/25. Impairment of financial assets Our generation segment recorded an impairment of financial assets of U.S.$46 million for the Fiscal year ended December 31, 2024, primarily due to an agreement entered into with CAMMESA on May 27, 2024, pursuant to which CAMMESA settled certain overdue wholesale electricity payments through (i) the delivery of sovereign bonds valued at 65.0% of their face amount to settle December 2023 and January 2024 WEM´s transactions and (ii) a cash payment to settle February 2024 WEM’s transaction. No impairment was recorded for the Fiscal year ended December 31, 2025. Operating Income Operating income from our generation segment increased by U.S.$171 million (84%), to U.S.$375 million for the Fiscal year ended December 31, 2025, compared to U.S.$204 million for the Fiscal year ended December 31, 2024. This variation is mainly attributable to the increase in 2025 gross profit; CPB’s recovery of impairment of property, plant and equipment, lower labor costs, higher insurance recoveries and higher share of profit from CTB. These effects were partially offset by the decrease of commercial interest gains in 2025. The operating margin on sales for the Fiscal year ended December 31, 2025, increased to 47%, compared to 30% for the Fiscal year ended December 31, 2024. Financial Results, net Financial results, net, amounted to gains of U.S.$140 million for the Fiscal year ended December 31, 2025, compared to U.S.$138 million for the Fiscal year ended December 31, 2024. This increase is mainly due to higher financial interest gains, lower foreign currency exchange losses over the net monetary position in Argentine Pesos; partially offset by lower gains from changes in the fair value of financial instruments. Income Tax The generation segment recorded an income tax charge of U.S.$217 million for the Fiscal year ended December 31, 2025, compared to an income tax benefit of U.S.$119 million for the Fiscal year ended December 31, 2024. The variation is mainly related to a non-cash credit for deferred income tax due to inflation exceeding Peso devaluation for the Fiscal year ended December 31, 2024, while during the current period the inflation and devaluation variables exhibited the opposite behavior. 127 Table of Contents Profit of the year As a result of the foregoing, the generation segment recorded profits of U.S.$298 million for the Fiscal year ended December 31, 2025, compared to U.S.$461 million for the Fiscal year ended December 31, 2024, mostly attributable to the owners of the Company. Petrochemicals Segment Petrochemical (in millions of U.S.$) For the fiscal year ended December 31, 2025 December 31, 2024 Variation % Revenue 443 516 (73) (14%) Cost of sales (429) (487) 58 (12%) Gross profit 14 29 (15) (52%) Selling expenses (12) (13) 1 (8%) Administrative expenses (6) (7) 1 (14%) Other operating income and expenses, net 10 34 (24) (71%) Impairment of property, plant and equipment (37) - (37) 100% Operating income (31) 43 (74) (172%) Financial income 27 21 6 29% Financial costs - (3) 3 (100%) Other financial results 3 7 (4) (57%) Financial results, net 30 25 5 20% Profit before income tax (1) 68 (69) (101%) Income tax 5 4 1 25% Profit of the year 4 72 (68) (94%) Owners of the Company 4 72 (68) (94%) Revenue Revenue from our petrochemicals segment amounted to U.S.$443 million for the Fiscal year ended December 31, 2025, 14% lower than the U.S.$516 million reported for the Fiscal year ended December 31, 2024. This variation is mainly due to lower prices across all products, reflecting the trend in international reference prices within a more competitive economic context. Total sold volumes during the Fiscal year ended December 31, 2025, decreased 2% compared to the Fiscal year ended December 31, 2024. This variation is mainly explained by lower sale volumes from SBR and styrenics. The following table shows sales volumes in the petrochemicals segment during the specified years: Volume sold in k ton Fiscal year ended December 31, 2025 December 31, 2024 Reforming Plant 335 336 Styrene & polystyrene 84 88 SBR 41 45 Total 460 469 128 Table of Contents Cost of Sales Cost of sales from our petrochemicals segment decreased by 12%, to U.S.$429 million for the Fiscal year ended December 31, 2025, compared to U.S.$487 million for the Fiscal year ended December 31, 2024. This variation resulted from decreased sales volumes and reduced prices for raw materials primarily used at the reforming plant. Gross Profit Our petrochemical segment recorded a gross profit of U.S.$14 million for the Fiscal year ended December 31, 2025, compared to U.S.$29 million for the same period in 2024, mainly due to lower polystyrene, SBR and styrene margins, which were partially offset by higher reforming plant margin. The gross margin on sales reached 3% for the Fiscal year ended December 31, 2025, compared to 6% for the Fiscal year ended December 31, 2024. Selling Expenses Selling expenses from our petrochemicals segment decreased to U.S.$12 million for the Fiscal year ended December 31, 2025, compared to U.S.$13 million for the Fiscal year ended December 31, 2024. Administrative Expenses Administrative expenses from our petrochemicals segment decreased to U.S.$6 million for the Fiscal year ended December 31, 2025, compared to U.S.$7 million for the Fiscal year ended December 31, 2024 mainly due to lower labor costs. Other operating income and expenses, net Other operating income and expenses, net amounted to gains of U.S.$10 million for the Fiscal year ended December 31, 2025, compared to U.S.$34 million for the Fiscal year ended December 31, 2024. This variation is mainly explained by the higher reversal of the customs contingency provision recorded in 2024, lower gains driven by the settlement of exports at a differential U.S. dollar exchange rate through the Export Increase Program and losses from idle capacity in our reforming, SBR, styrene and polystyrene plants. Impairment of property, plant and equipment Our petrochemical segment recorded an impairment of property, plant and equipment of U.S.$37 million for the fiscal year ended December 31, 2025 as a result of the recoverability assessment performed, considering the identified adverse market conditions due to the sustained decline in petrochemical product sales prices within a more competitive economic context. Operating Income The operating income from our petrochemicals segment decreased to a loss of U.S.$31 million in the Fiscal year ended December 31, 2025, compared to U.S.$43 million gain for the Fiscal year ended December 31, 2024. Financial Results, Net Our petrochemicals segment recorded gains for financial results, net of U.S.$30 million for the Fiscal year ended December 31, 2025, compared to U.S.$25 million for the Fiscal year ended December 31, 2024. This variation is mainly explained by the higher reversal of accrued interests related to the customs contingency provision recorded in previous periods. Income Tax The petrochemicals segment recorded an income tax benefit of U.S.$5 million for the Fiscal year ended December 31, 2025, compared to U.S.$4 million for the same period in 2024. 129 Table of Contents Profit of the year The petrochemicals segment recorded profits of U.S.$4 million for the Fiscal year ended December 31, 2025, compared to U.S.$72 million for the Fiscal year ended December 31, 2024, both of which were entirely attributable to the owners of the Company. Holding, Transportation and Others Segment Holding, transportation and others (in millions of U.S.$) For the fiscal year ended December 31, 2025 December 31, 2024 Variation % Revenue 24 65 (41) (63%) Cost of sales - (17) 17 (100%) Gross profit 24 48 (24) (50%) Selling expenses (2) - (2) 100% Administrative expenses (61) (98) 37 (38%) Other operating income and expenses, net (20) (27) 7 (26%) Share of profit from associates and joint ventures 127 167 (40) (24%) Profit from sale of companies’ interest - 34 (34) (100%) Operating income 68 124 (56) (45%) Financial income - 1 (1) (100%) Financial costs (49) (33) (16) 48% Other financial results 94 32 62 194% Financial results, net 45 - 45 100% Profit before income tax 113 124 (11) (9%) Income tax 18 (33) 51 (155%) Profit of the year 131 91 40 44% Owners of the Company 131 91 40 44% Revenue Revenue from our holding, transportation and others segment decreased by 63% to U.S.$24 million in the Fiscal year ended December 31, 2025 compared to U.S.$65 million for the Fiscal year ended December 31, 2024, mainly explained by the consolidation of OCP, which became effective on August 30, 2024 and included crude oil transportation activity until the concession ended on November 29, 2024. Cost of Sales Our holding, transportation and others segment recorded cost of sales of U.S.$17 million in the Fiscal year ended December 31, 2024, entirely attributable to the consolidation of OCP, which became effective on August 30, 2024 and included crude oil transportation activity until the concession ended on November 29, 2024. Gross Profit Our holding, transportation and others segment recorded a gross profit of U.S.$24 million in the Fiscal year ended December 31, 2025 compared to U.S.$48 million for the fiscal year ended December 31, 2024, mainly due to OCP’s crude oil transportation activity in 2024. Selling and Administrative Expenses Selling and administrative expenses from our holding, transportation and others segment decreased to U.S.$63 million for the Fiscal year ended December 31, 2025, compared to U.S.$98 million for the Fiscal year ended December 31, 2024, mainly due to lower executive compensation accrual in line with the share price performance, partially offset by higher fees and compensation for services. 130 Table of Contents Other Operating Income and Expenses, Net Other operating income and expenses, net from our holding, transportation and others segment recorded losses of U.S.$20 million for the Fiscal year ended December 31, 2025, compared to U.S.$27 million for the Fiscal year ended December 31, 2024. The variation is mainly due to provision for contingencies charges recorded in 2024. Share of profit from associates and joint ventures Share of profit from associates and joint ventures from our holding, transportation and others segment amounted to U.S.$127 million for the Fiscal year ended December 31, 2025, compared to U.S.$167 million for the Fiscal year ended December 31, 2024. This variation is explained by lower profit from our stake in OCP, mainly due to gains recognized in the acquisition of additional shares in OCP’s capital stock in 2024, partially offset by higher profits from our stakes in CIESA and CITELEC consistent with monthly rate increases received by TGS and Transener in 2025. Profit from sale of companies’ interest The profit from sale of companies’ interest from our holding, transportation and others segment amounted to U.S.$34 million for the Fiscal year ended December 31, 2024 due to the sale of our direct interest in TGS. Operating Income Operating income from our holding, transportation and others segment amounted to a U.S.$68 million profit for the Fiscal year ended December 31, 2025, compared to U.S.$124 million for the Fiscal year ended December 31, 2024. Financial Results, Net Our holding, transportation and others segment recorded a U.S.$45 million net financial gain for the Fiscal year ended December 31, 2025 due to higher foreign currency net exchange gains on the liability monetary position in Argentine pesos, partially offset by higher interest expenses on fiscal liabilities. No net charges were recorded for the Fiscal year ended December 31, 2024. Income Tax Our holding, transportation and others segment recorded an income tax benefit of U.S.$18 million for the Fiscal year ended December 31, 2025, compared to an income tax charge of U.S.$33 million for the Fiscal year ended December 31, 2024. The variation is mainly related to the tax inflation adjustment over the net monetary position. Profit of the year Our holding, transportation and others segment recorded profits of U.S.$131 million for the Fiscal year ended December 31, 2025, compared to U.S.$91 million for the Fiscal year ended December 31, 2024, both of which were entirely attributable to the owners of the Company. Fiscal year ended December 31, 2024 compared to the fiscal year ended December 31, 2023 For a discussion of the results for the fiscal year ended December 31, 2024 compared to the fiscal year ended December 31, 2023, please refer to “Item 5. Operating and Financial Review and Prospects” of our Annual Report on Form 20-F for the year ended December 31, 2024 filed on April 16, 2025. Liquidity and Capital Resources Analysis of our Financial Condition Our ability to execute and carry out our strategic business plan depends upon our ability to obtain financing at a reasonable cost and on reasonable terms. Along these lines, and as a guiding principle, financial solvency is the foundation on which the sustainable development of our businesses is built. Pursuant to these strategic guidelines, we seek to: (a) Design a capital structure consistent with industry standards adaptable to the financial markets in which we operate; (b) Maintain a liquidity level—invested in financial assets with high credit quality—that allows us to meet our obligations; (c) Maintain a debt maturity profile consistent with projected cash generation; and (d) Efficiently manage borrowing costs. 131 Table of Contents Adhering to these guidelines enables us to treat financial management as a key element in the value creation process. Our business activities are focused on the development and value-enhancement of our energy assets, while continuing to identify, evaluate and invest in other opportunities in the Argentine energy industry that offer significant growth potential and/or synergies. Total consolidated borrowings as of December 31, 2025 and 2024 were U.S.$ 1,892 million and U.S.$ 2,079 million, respectively. As of December 31, 2025 and 2024, 100% and 99% of our borrowings were denominated in U.S. Dollars, respectively. As of December 31, 2025 and 2024, cash and cash equivalents were U.S.$725 million and U.S.$ 738 million, respectively. We maintain our cash and cash equivalents in Pesos, and in U.S. Dollars depending on medium term requirements and availability, at all levels of operations. We conducted financings mostly at fixed rates. The table below reflects our cash position at the dates indicated and the net cash provided by (used in) operating, investing and financing activities during the years indicated: As of December 31, 2025 2024 Cash and cash equivalents at the beginning of the year 738 171 Net cash generated by operating activities 778 435 Net cash used in investing activities (401) (344) Net cash (used in) generated by financing activities (390) 476 Cash and cash equivalents at the end of the year 725 738 Net cash generated by operating activities Net cash generated by operating activities amounted to U.S.$778 million for the year ended December 31, 2025, attributable to cash flow generated by net income without considering (i) non-cash losses (mainly related to U.S.$414 million for depreciation and amortization of assets, U.S.$204 million for income tax, U.S.$139 million for interest accrual and U.S.$21 million for financial assets impairment), and (ii) non-cash profits (mainly related to U.S.$181 million for changes in the fair value of financial instruments, U.S.$142 million for share of profit from joint ventures and associates, U.S.$48 million for net exchange differences and U.S.$15 million for non-financial assets impairment recovery), but considering (iii) changes in operating assets and liabilities (mainly related to increases of U.S.$100 million in trade and other receivables and U.S.$69 million in trade and other payables). Net cash generated by operating activities amounted to U.S.$435 million for the year ended December 31, 2024, attributable to cash flow generated by net income without considering (i) non-cash losses (mainly related to U.S.$342 million for depreciation and amortization of assets, U.S.$106 million for interest accrual, U.S.$61 million for compensation agreements accrual, U.S.$56 million for financial assets impairment, U.S.$34 million for non-financial assets impairment and U.S.$27 million for defined benefit plans accrual), and (ii) non-cash profits (mainly related to U.S.$213 million for changes in the fair value of financial instruments, U.S.$146 million for share of profit from joint ventures and associates, U.S.$121 million for income tax and U.S.$34 million for companies’ interest sales), but considering (iii) changes in operating assets and liabilities (mainly related to an increase of U.S.$411 million in trade and other receivables). 132 Table of Contents Net cash used in investing activities Net cash used in investing activities amounted to U.S.$401 million for the year ended December 31, 2025, including payments of U.S.$993 million for purchases of property, plant and equipment and U.S.$44 million for capital integration in companies; partially offset by U.S.$592 million cash proceeds for net collection of public securities and shares’ sales and U.S.$25 million for dividends collection. Net cash used in investing activities amounted to U.S.$344 million for the year ended December 31, 2024, including payments of U.S.$447 million for purchases of property, plant and equipment and U.S.$48 million for the acquisition of companies; partially offset by U.S.$71 million cash proceeds for purchase of subsidiary; U.S.$39 million collection for equity interests in companies’ sales and U.S.$37 million collection for joint ventures’ share repurchase. Net cash used in or generated by financing activities Net cash used in our financing activities amounted to U.S.$401 million for the year ended December 31, 2025, principally due to U.S.$1,304 million payments made in connection with bank and financial borrowings (including principal, interests, repurchase and redemption of corporate bonds); partially offset by U.S.$986 million proceeds from borrowings. Net cash generated by our financing activities amounted to U.S.$476 million for the year ended December 31, 2024, principally due to U.S.$1,174 million in proceeds from borrowings; partially offset by U.S.$694 million payments made in connection with bank and financial borrowings (including principal, interests, repurchase and redemption of corporate bonds). Capital Expenditures The following table sets forth our capital expenditures for the years ended December 31, 2025 and 2024: At December 31, 2025 2024 Oil and Gas 1,039 354 Generation 66 105 Petrochemical 15 6 Holding and others 12 10 1,132 475 Our capital expenditures in our oil and gas segment amounted to U.S.$1,039 million in 2025, mainly related to the development of the Rincón de Aranda area, through well drilling and completion, as well as progress in the construction of surface facilities and the permanent treatment plant; and to a lesser extent, to the Sierra Chata area, through well drilling and completion. In 2025, our capital expenditures in our generation segment amounted to U.S.$66 million mainly related to the modernization and replacement of generation equipment extending assets’ useful lives, ensuring reliability and operational efficiency at CTLL, and CTGEBA. Our capital expenditures in our oil and gas segment amounted to U.S.$354 million in 2024, mainly related to well and facility works in order to develop the Rincón de Aranda area and to increase gas production in the Sierra Chata and El Mangrullo areas. In 2024, our capital expenditures in our generation segment amounted to U.S.$105 million mainly related to the completion of the construction of the 140MW in PEPE VI wind farm, which commercial commissioning was completed in November 2024. 133 Table of Contents Future Capital Requirements We estimate that our capital investment requirements, debt payment obligations, and working capital will be financed through cash flow from operations, new debt financing, capital contributions, and potential divestments, as well as the prevailing political, economic, and social situation in Argentina. For more information, and those factors that could affect our levels of investments see “Item 3. Key Information - Risk Factors.” In the oil and gas segment, the 2026 investment plan will focus heavily on our unconventional fields, with significant investments in developing our main crude oil area in Vaca Muerta, Rincón de Aranda, through the RDA Project. Specifically, we will execute a 2026 investment plan of approximately U.S.$ 0.8 billion, to that end. Also, as part of our equity participation in VMOS and SESA, we will allocate funds in 2026 as capital contributions for the partial financing of the Vaca Muerta Oil Sur Project and the FLNG Project. In our generation segment, future capital investments will focus on maintaining our currently operating power plants. For further information on our investment commitments in oil and gas areas and our generation projects, please see Note 18 to our Consolidated Financial Statements. Description of Indebtedness Our total consolidated financial indebtedness as of December 31, 2025 was U.S.$ 1,892 million, of which 97% was long-term debt, 96% of which was denominated in U.S. Dollars (excluding U.S.$ linked debt for U.S.$ 80 million). The amount of our total consolidated financial debt does not include Transener, TGS and CTB given that our stake in those companies constitutes an interest in a joint venture, and as such is not consolidated and is valued according to the equity method of accounting in the Consolidated Financial Statements. The below is a description of the main characteristics of the indebtedness of our group companies: 2025 2024 (in millions of U.S.$) Short-Term Debt Corporate Bonds 15 584 Financial borrowings 33 122 Bank overdrafts - - 48 706 Long-Term Debt Corporate Bonds(1) 1,799 1,341 Financial borrowings 45 32 Total 1,844 1,373 Total Indebtedness 1,892 2,079 (1) Net of the following face value repurchases: U.S.$ 76.2 million of Series 9 notes and U.S.$ 7.5 million of Series 3 notes as of December 31, 2024. Financings During 2025, we continued to strengthen our maturity profile, primarily through the following actions: (i) on May 28, 2025, we reopened our 7.875% notes due December 2034 (the “Series 23 notes”) for a total amount of U.S.$ 340 million and an 8% yield, increasing the total amount outstanding to U.S.$ 700 million; (ii) on August 6, 2025, we issued a new local note (“Series 25 notes”) for a total amount of U.S.$ 105 million at a 7.25% fixed annual interest rate and maturing in August, 2028; and (iii) on November 14, 2025, we issued a 7.75% international note due in November 2037 for an amount of U.S.$ 450 million (the “Series 26 notes”), and an 8.125% yield, maturing in December 2037. 134 Table of Contents Additionally, we repaid at maturity: (i) the outstanding total amount of our Series 19 notes for Ps. 17,131.3 million; (ii) our Series 16 notes for U.S.$ 56 million; and (iii) the second amortization of our Series 9 notes for U.S.$ 59 million. Moreover, we redeemed the outstanding total amount of our: (i) Series 1 notes for U.S.$ 353 million, on January 24, 2025; (ii) Series 18 notes for U.S.$ 63 million, on May 8, 2025, net of repurchases; (iii) Series 3 notes for U.S.$ 293 million, on June 23, 2025, net of repurchases; (iv) Series 9 notes for U.S.$ 61 million, on December 8, 2025; and (v) Series 20 notes for U.S.$ 36 million, on December 11, 2025, net of repurchases. Finally, we repaid net short-term bank loans for a total amount of U.S.$ 53 million and we cancelled net short-term import financings for an amount of U.S.$ 2.9 million. We also obtained pre-export financings for U.S.$ 70 million, which were cancelled before the end of the 2025 fiscal year. After the end of the 2025 fiscal year, we cancelled financings with banks for a net total amount of U.S.$ 23 million and we issued a new local note (“Series 27 notes”) for a total amount of U.S.$ 200 million at a 5.49% fixed annual interest rate and maturing in April, 2029. The following table describes our debt maturity profile for the periods indicated, including principal amount plus the corresponding accrued interest as of December 31, 2025: < 1 year 1-5 years > 5 years Total (in millions of U.S.$) (1) Total Indebtedness 48 313 1,531 1,892 (1) The sums are rounded and they may not add up. Corporate Bonds Throughout 2025, we remained active in local and international capital markets by issuing the following notes: Notes Currency Legislation Face value (in millions) Interest Rate Maturity Series 231 U.S.$ Foreign 340 7.875% Dec-34 Series 25 U.S.$ Argentine 105 7.250% Ago-28 Series 26 U.S.$ Foreign 450 7.750% Nov-37 (1) On May 28, 2025 we reopened Series 23 notes for a total amount of U.S.$ 340 million, increasing the total outstanding to U.S.$ 700 million. Credit Ratings On February 6, 2025, S&P Global Ratings upgraded Pampa’s local and foreign currency debt rating from “CCC” to “B-” as a result of the upgrade in Argentina’s “Transfer and Convertibility” assessment, and later on August 2025, upgraded Pampas rating Stand-Alone from “b+” to “bb-”. After the end of 2025, our commercial relationship with Moody’s expired and was not renewed. Consequently, the company is currently not rated by this agency. In March 2026, Fitch Ratings upgraded Pampa’s Long-Term Foreign and Local Currency Issuer Default Ratings from “B-” to “B” and has also upgraded Pampa’s senior unsecured notes from “B” to “B+” with a Recovery Rating of “RR3”. As of the date of this annual report, Pampa’s ratings are as follows: Agency Rating Global Local12) S&P B-, bb- (stand alone) - FitchRatings B, B+ (bond rating) AAA (long term) A1+ (short term) (1) Local ratings issued by FIX SCR (affiliate of Fitch Ratings). 135 Table of Contents Covenants of our Indebtedness Under the terms of the respective outstanding debt, we and certain of our subsidiaries are subject to a number of restrictive covenants, including limitations on incurrence of new indebtedness, capital expenditures and dividend payments, among others. As of December 31, 2025, we and our subsidiaries were in compliance with the covenants under our respective outstanding indebtedness.