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• Reported net income attributable to common stockholders was $2.8 billion, or $2.75 per diluted share, for Q2 2026.
• Generated $5.1 billion operating cash flow from continuing operations and $4.6 billion before working capital.
• Delivered $3.0 billion free cash flow before working capital, highest since Q3 2022, with capex of $1.6 billion.
• Reduced principal debt by $1.9 billion to $11.8 billion; increased quarterly dividend by 8% to $0.28 per share.

2.02 Results of Operations and Financial Condition · 9.01 Financial Statements and Exhibits

• Crude oil collar settlements negatively impacted operating cash flow before working capital by $156 million in Q2 2026.
• Total worldwide average realized oil price was $96.78 per barrel; WTI and Brent index prices were $92.79 and $97.06 per barrel, respectively.
• Total worldwide average realized NGL price was $24.64 per barrel; total worldwide average realized natural gas price was $(0.80) per Mcf.
• Worldwide oil realized price was 104% of WTI and 100% of Brent; domestic natural gas realized price was (51)% of NYMEX.

2.02 Results of Operations and Financial Condition · 9.01 Financial Statements and Exhibits

• Reported net income attributable to common stockholders was $3.2 billion, or $3.13 per diluted share, for Q1 2026.
• Operating cash flow from continuing operations was $1.4 billion; operating cash flow before working capital was $3.2 billion.
• Total company production averaged 1,426 Mboed, exceeding the high end of guidance.
• Repaid $7.1 billion of principal debt through May 5, reducing principal debt to $13.3 billion.

2.02 Results of Operations and Financial Condition · 9.01 Financial Statements and Exhibits

• Vicki Hollub, President and CEO, will retire effective June 1, 2026, and will remain on the Board.
• Richard A. Jackson, 50, appointed President and CEO and Board member effective June 1, 2026.
• Jackson will receive restricted stock units valued at $6,000,000 vesting in equal annual installments over three years.
• At the 2026 Annual Meeting, all ten director nominees were elected, and the say-on-pay vote and KPMG ratification were approved.

5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · 5.07 Submission of Matters to a Vote of Security Holders · 7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• Worldwide average realized oil price was $69.91 per barrel; US oil $70.31, international $67.59.
• Worldwide average realized NGL price was $18.99 per barrel; US NGL $18.45, international $23.52.
• Worldwide average realized natural gas price was $1.20 per Mcf; US gas $1.01, international $1.93.
• Average index prices: WTI oil $71.93/Bbl, Brent oil $77.93/Bbl, NYMEX gas $3.93/Mcf.

2.02 Results of Operations and Financial Condition · 9.01 Financial Statements and Exhibits

• As of March 4, 2026, Occidental accepted $21.5 million of 0.000% 2036 Notes, $843.3 million of 6.125% 2031 Notes, and $335.2 million of 6.625% 2030 Notes.
• The 6.125% 2031 Notes reached the required consent to amend the indenture, eliminating certain covenants and shortening the redemption notice period to 5 business days.
• The 6.625% 2030 Notes, 7.200% 2029 Debentures, and 7.950% 2029 Debentures did not obtain the required consent, so their indentures remain unchanged.
• The tender offers and consent solicitations expire on March 19, 2026, with early settlement on March 9, 2026.
• Citigroup is the lead dealer manager, with J.P. Morgan, RBC, TD Securities, and Wells Fargo as co-dealer managers.

1.01 Entry into a Material Definitive Agreement · 3.03 Material Modification to Rights of Security Holders · 8.01 Other Events · 9.01 Financial Statements and Exhibits

• The tender offers include a $58.0 million sub-cap for the Zero Coupon Senior Notes due 2036, and the offers expire on March 19, 2026, unless extended.
• Holders who tender by the early tender time of March 4, 2026, are eligible for an early tender premium of $30 per $1,000 principal amount.
• Occidental is also soliciting consents from holders of four series of notes to eliminate certain covenants and shorten the redemption notice period to 5 business days.
• The tender offers are funded with cash on hand, including proceeds from the January 2, 2026 sale of Occidental Chemical Corporation.
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7.01 Regulation FD Disclosure · 9.01 Financial Statements and Exhibits

• Adjusted income attributable to common stockholders was $315 million, or $0.31 per diluted share, for Q4 2025.
• Operating cash flow was $2.6 billion and operating cash flow before working capital was $2.7 billion in Q4 2025.
• Total company production averaged 1,481 Mboed in Q4 2025, exceeding the high end of guidance.
• Occidental completed the OxyChem sale on January 2, 2026, reducing debt by $5.8 billion since mid-December 2025 to $15.0 billion principal debt.

2.02 Results of Operations and Financial Condition · 9.01 Financial Statements and Exhibits