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This Quarterly Report on Form 10-Q for the quarter ended June 30, 2026 (this “Quarterly Report on Form 10-Q”) contains certain forward-looking statements, as defined in the Private Securities Litigation Reform Act of 1995. This discussion contains forward-looking statements about our business, operations and industry that involve risks and uncertainties, such as statements regarding our plans, objectives, expected future developments, expectations and intentions, and they involve known and unknown risks that are difficult to predict. As a result, our future results and financial condition may differ materially from those we currently anticipate as a result of the factors we describe in our filings with the Securities and Exchange Commission (the “SEC”), including our Annual Report on Form 10-K for the year ended December 31, 2025 (the “Annual Report on Form 10-K”), and as updated in this Quarterly Report on Form 10-Q, and other quarterly and current reports, which are on file with the SEC and are available at the SEC's website (www.sec.gov). Additionally, please see our “Cautionary Statement Concerning Forward-Looking Statements” located elsewhere in this Quarterly Report on Form 10-Q. This Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) is based on financial data derived from the financial statements prepared in accordance with the United States generally accepted accounting principles (“GAAP”) and certain other financial data that is prepared using a non-GAAP measure. For a reconciliation of the non-GAAP measure to its most comparable GAAP component, see “Non-GAAP Financial Measures” in this Item 2. Our MD&A is provided in addition to the accompanying consolidated financial statements and notes to assist readers in understanding our results of operations, financial condition and cash flow. Second Quarter Key Financial Results Our consolidated results of operations were as follows: Three Months Ended June 30, Increase (Decrease) Six Months Ended June 30, Increase (Decrease) 2026 2025 2026 2025 (Dollars in millions) Adjusted EBITDA(1) $ 69.6 $ 43.6 $ 26.0 $ 126.1 $ 103.4 $ 22.7 Net income $ 15.6 $ 3.5 $ 12.1 $ 12.2 $ 22.9 $ (10.7) Net cash provided by operating activities $ (27.2) $ 17.5 $ (44.7) $ 45.5 $ 43.3 $ 2.2 (1)See the “Non-GAAP Financial Measures” section for both the definition of Adjusted EBITDA and the reconciliation from GAAP to the non-GAAP measurement. Operating results for the three and six months ended June 30, 2026 reflect favorable coal-to-coke yields and terminals handling volumes. These increases were partially offset by lower volumes due to the shutdown of our Haverhill I cokemaking facility and lower energy revenues due to the turbine failure at our Middletown cokemaking facility. Additionally, operating results for the six months ended June 30, 2026 were negatively impacted by lower pricing on our foundry sales. Operating results for the three and six months ended June 30, 2026 include the results of Phoenix Global. Net income for the three months ended June 30, 2026 increased compared to the same prior year period driven by the favorable operating results discussed above, partially offset by higher interest expense due to higher Revolving Facility borrowings. Net income for the six months ended June 30, 2026 decreased compared to the same prior year period driven by higher depreciation and amortization expense as a result of the inclusion of Phoenix Global results and higher interest expense due to higher Revolving Facility borrowings, partially offset by the favorable operating results discussed above. Operating cash flows during the current period primarily reflect unfavorable changes in primary working capital driven by the timing of customer payments, partially offset by lower coal inventory. See detailed analysis of the quarter's results throughout this MD&A. Recent Developments •Haverhill I Shutdown. In the first quarter of 2026, the Company completed the shutdown of its Haverhill I cokemaking facility. 19 Table of Contents Results of Operations The following table sets forth amounts from the Consolidated Statements of Operations for the three and six months ended June 30, 2026 and 2025, respectively: Three Months Ended June 30, Increase (Decrease) Six Months Ended June 30, Increase (Decrease) 2026 2025 2026 2025 (Dollars in millions) Revenues Sales and other operating revenue $ 475.3 $ 434.1 $ 41.2 $ 930.4 $ 870.1 $ 60.3 Costs and operating expenses Cost of products sold and operating expenses 374.9 375.1 (0.2) 750.4 737.4 13.0 Selling, general and administrative expenses 31.5 20.6 10.9 61.8 35.3 26.5 Depreciation and amortization expense 39.9 28.6 11.3 84.8 57.4 27.4 Total costs and operating expenses 446.3 424.3 22.0 897.0 830.1 66.9 Operating income 29.0 9.8 19.2 33.4 40.0 (6.6) Interest expense, net 8.5 5.4 3.1 17.2 10.6 6.6 Income before income tax expense 20.5 4.4 16.1 16.2 29.4 (13.2) Income tax expense 4.9 0.9 4.0 4.0 6.5 (2.5) Net income 15.6 3.5 12.1 12.2 22.9 (10.7) Less: Net income attributable to noncontrolling interests 2.5 1.6 0.9 3.5 3.7 (0.2) Net income attributable to SunCoke Energy, Inc. $ 13.1 $ 1.9 $ 11.2 $ 8.7 $ 19.2 $ (10.5) Sales and Other Operating Revenue. Sales and other operating revenue increased for the three and six months ended June 30, 2026 compared to the same prior year periods, driven by the inclusion of Phoenix Global results. These increases were partially offset by lower volumes as a result of the shutdown of our Haverhill I cokemaking facility, lower energy revenues due to the turbine failure at our Middletown cokemaking facility and the pass-through of lower coal prices on our long-term, take-or-pay agreements. Additionally, sales and other operating revenue for the six months ended June 30, 2026 was negatively impacted by lower pricing on our foundry sales. Costs of Products Sold and Operating Expenses. Costs of products sold and operating expenses decreased slightly for the three months ended June 30, 2026 as compared to the prior year period driven by lower volumes as a result of the shutdown of our Haverhill I cokemaking facility and the pass-through of lower coal prices on our long-term, take-or-pay agreements, offset by the inclusion of Phoenix Global results. Costs of products sold and operating expenses increased for the six months ended June 30, 2026 as compared to the prior year period driven by the inclusion of Phoenix Global results. This increase was partially offset by lower volumes as a result of the shutdown of our Haverhill I cokemaking facility and the pass-through of lower coal prices on our long-term, take-or-pay agreements. Selling, General and Administrative Expenses. Selling, general and administrative expenses increased during the three and six months ended June 30, 2026 reflecting the inclusion of Phoenix Global costs, costs incurred associated with the shutdown of our Haverhill I cokemaking facility and higher employee-related costs. Depreciation and Amortization Expense. The increase to depreciation and amortization expense for the three and six months ended June 30, 2026 reflects the inclusion of Phoenix Global's expenses in the current year periods. Interest Expense, Net. Interest expense, net, during the three and six months ended June 30, 2026 increased as a result of interest incurred on higher Revolving Facility borrowings. Income Tax Expense. Income tax expense increased during the three months ended June 30, 2026 compared to the same prior year period as a result of higher pretax income and decreased during the six months ended June 30, 2026 compared to the same prior year period due to lower pretax income, driven by the factors previously discussed. See Note 5 Income Taxes to our consolidated financial statements for further detail. Noncontrolling Interest. Net income attributable to noncontrolling interests represents a 14.8 percent third-party interest in our Indiana Harbor cokemaking facility and fluctuates with the financial performance of that facility. 20 Table of Contents Results of Reportable Business Segments Following the acquisition of Phoenix Global and as discussed in Note 11 Business Segment Information, we updated our reportable segments and have recast all segment information for all prior periods presented herein to reflect this change. We report our business results through two reportable segments: •Domestic Coke consists of our Jewell facility, located in Virginia, our Indiana Harbor facility, located in Indiana, our Granite City facility located in Illinois, and our Middletown and Haverhill facilities located in Ohio. •Industrial Services consists of logistics terminals including CMT, located in Louisiana, KRT, located in West Virginia, and Lake Terminal, located in Indiana. Lake Terminal is located adjacent to our Indiana Harbor cokemaking facility. Additionally, Industrial Services includes fifteen molten slag removal, handling and processing operating sites across the United States, Brazil, Slovakia and Spain. Corporate expenses that can be identified with a segment have been included in determining segment results. The remainder is included in Corporate and Other, including licensing and operating fees payable to us under long-term contracts with ArcelorMittal Brazil as well as the expenses related to those operations and activity from our legacy coal mining business, which is not considered a reportable segment and therefore, not included in our segment information in Note 11. However, we have included Corporate and Other within our operating data below. Management believes Adjusted EBITDA is an important measure of operating performance, which is used by the CODM as one of the measurements to help determine the allocation of costs and resources to our reportable segments. Adjusted EBITDA should not be considered a substitute for the reported results prepared in accordance with GAAP. See the “Non-GAAP Financial Measures” section for both the definition of Adjusted EBITDA and the reconciliation from GAAP to the non-GAAP measurement. 21 Table of Contents Segment Financial and Operating Data The following tables set forth financial and operating data by segment: Three Months Ended June 30, Increase (Decrease) Six Months Ended June 30, Increase (Decrease) 2026 2025 2026 2025 (Dollars in millions) Sales and Other Operating Revenues: Domestic Coke $ 367.5 $ 410.4 $ (42.9) $ 729.2 $ 816.2 $ (87.0) Industrial Services 98.4 15.1 83.3 183.8 37.5 146.3 Industrial Services intersegment sales 5.8 5.9 (0.1) 11.3 11.5 (0.2) Elimination of intersegment sales (5.8) (5.9) 0.1 (11.3) (11.5) 0.2 Total sales and other operating revenue reportable segments $ 465.9 $ 425.5 $ 40.4 $ 913.0 $ 853.7 $ 59.3 Corporate and Other, net(1) 9.4 8.6 0.8 17.4 16.4 1.0 Total sales and other operating revenue $ 475.3 $ 434.1 $ 41.2 $ 930.4 $ 870.1 $ 60.3 Adjusted EBITDA: Domestic Coke $ 42.5 $ 40.5 $ 2.0 $ 77.8 $ 90.4 $ (12.6) Industrial Services 34.4 7.7 26.7 60.6 21.4 39.2 Total Adjusted EBITDA reportable segments 76.9 48.2 28.7 138.4 111.8 26.6 Corporate and Other, net(1) (7.3) (4.6) (2.7) (12.3) (8.4) (3.9) Total Adjusted EBITDA(2) $ 69.6 $ 43.6 $ 26.0 $ 126.1 $ 103.4 $ 22.7 Domestic Coke Operating Data: Domestic Coke capacity utilization(3) 100 % 95 % 5 % 97 % 93 % 4 % Domestic Coke production volumes (thousands of tons) 864 947 (83) 1,670 1,852 (182) Domestic Coke sales volumes (thousands of tons) 878 943 (65) 1,720 1,841 (121) Domestic Coke Adjusted EBITDA per ton(4) $ 48.41 $ 42.95 $ 5.46 $ 45.23 $ 49.10 $ (3.87) Industrial Services Operating Data: Terminals handling volumes (thousands of tons) 6,672 4,746 1,926 12,316 10,470 1,846 Steel customer volumes serviced (thousands of tons) 5,763 — 5,763 11,326 — 11,326 (1)Corporate and Other, net is not a reportable segment and includes the results of Brazil cokemaking operations. (2)See the “Non-GAAP Financial Measures” section below for both the definition of Adjusted EBITDA and the reconciliation from GAAP to the non-GAAP measurement. (3)The production of foundry coke tons does not replace blast furnace coke tons on a ton for ton basis, as foundry coke requires longer coking time. The Domestic Coke capacity utilization is calculated assuming a single ton of foundry coke replaces approximately two tons of blast furnace coke. (4)Reflects Domestic Coke Adjusted EBITDA divided by Domestic Coke sales volumes. 22 Table of Contents Analysis of Segment Results Domestic Coke The following table sets forth year-over-year changes in the Domestic Coke segment's sales and other operating revenues and Adjusted EBITDA results: Three Months Ended June 30, 2026 vs. 2025 Six Months Ended June 30, 2026 vs. 2025 Sales and other operating revenue Adjusted EBITDA Sales and other operating revenue Adjusted EBITDA (Dollars in millions) Prior year period $ 410.4 $ 40.5 $ 816.2 $ 90.4 Volume(1) (22.8) (4.4) (46.6) (11.3) Price(2) (16.8) 14.8 (33.9) 10.1 Operating and maintenance costs N/A (1.1) N/A (1.7) Energy and other(3) (3.3) (7.3) (6.5) (9.7) Current year period $ 367.5 $ 42.5 $ 729.2 $ 77.8 (1)Volumes during the three and six months ended June 30, 2026 decreased due to the shutdown of our Haverhill I cokemaking facility. (2)The pass-through of lower coal prices decreased sales and other operating revenue during the three and six months ended June 30, 2026. Adjusted EBITDA for the three and six months ended June 30, 2026 increased due to favorable coal-to-coke yields. (3)Energy and other during the three and six months ended June 30, 2026 decreased due to the turbine failure at our Middletown cokemaking facility partially offset by favorable pricing during the current year periods. Industrial Services During the three and six months ended June 30, 2026, sales and other operating revenues, exclusive of intersegment sales, were $98.4 million and $183.8 million, respectively, compared to $15.1 million and $37.5 million, respectively, in the corresponding prior year periods. Adjusted EBITDA, inclusive of the impact of intersegment transactions, during the three and six months ended June 30, 2026 was $34.4 million and $60.6 million, respectively, compared to $7.7 million and $21.4 million, respectively, in the corresponding prior year periods. Industrial services results increased during the current year periods due to the inclusion of Phoenix Global results and favorable transloading volumes and pricing. Corporate and Other Corporate and Other Adjusted EBITDA represented a loss of $7.3 million and $12.3 million, respectively, for the three and six months ended June 30, 2026, compared to a loss of $4.6 million and $8.4 million, respectively, in the corresponding prior year periods. The three and six months ended June 30, 2026 reflect higher employee related expenses. Non-GAAP Financial Measures In addition to the GAAP results provided in this Quarterly Report on Form 10-Q, we have provided a non-GAAP financial measure, Adjusted EBITDA. Our management, as well as certain investors, use this non-GAAP measure to analyze our current and expected future financial performance. This measure is not in accordance with, or a substitute for, GAAP and may be different from, or inconsistent with, non-GAAP financial measures used by other companies. The Company evaluates the performance of its segments based on segment Adjusted EBITDA, which is defined as earnings before interest, taxes, depreciation and amortization (“EBITDA”), adjusted for any impairments, restructuring costs, gains or losses on extinguishment of debt, gains or losses on foreign currency derivative instruments assumed as part of the acquisition of Phoenix Global, site closure costs and/or transaction costs (“Adjusted EBITDA”). EBITDA and Adjusted EBITDA do not represent and should not be considered alternatives to net income or operating income under GAAP and may not be comparable to other similarly titled measures in other businesses. Management believes Adjusted EBITDA is an important measure in assessing operating performance. Adjusted EBITDA provides useful information to investors because it highlights trends in our business that may not otherwise be apparent when relying solely on GAAP measures and because it eliminates items that have less bearing on our operating performance. EBITDA and Adjusted EBITDA are not measures calculated in accordance with GAAP, and they should not be considered a substitute for net income, or any other measure of financial performance presented in accordance with GAAP. 23 Table of Contents Additionally, other companies may calculate Adjusted EBITDA differently than we do, limiting its usefulness as a comparative measure. Reconciliation of Non-GAAP Financial Measures Below is a reconciliation of Adjusted EBITDA to net income, which is its most directly comparable financial measure calculated and presented in accordance with GAAP: Three Months Ended June 30, Six Months Ended June 30, 2026 2025 2026 2025 (Dollars in millions) Net income $ 15.6 $ 3.5 $ 12.2 $ 22.9 Add: Depreciation and amortization expense 39.9 28.6 84.8 57.4 Interest expense, net 8.5 5.4 17.2 10.6 Income tax expense 4.9 0.9 4.0 6.5 Loss on derivative forward contracts — — 0.3 — Restructuring costs(1) 0.3 — 0.6 — Transaction costs(2) — 5.2 0.2 6.0 Site closure costs(3) 0.4 — 6.8 — Adjusted EBITDA $ 69.6 $ 43.6 $ 126.1 $ 103.4 (1)Restructuring costs include severance and other related charges primarily associated with the acquisition of Phoenix Global. (2)Reflects costs incurred related to the acquisition of Phoenix Global. (3)Reflects costs incurred associated with the shutdown of our Haverhill I cokemaking facility and the closure of certain Phoenix Global operating sites. Liquidity and Capital Resources Our primary liquidity needs are to fund working capital and investments, service our debt, maintain cash reserves and replace partially or fully depreciated assets and other capital expenditures. Our sources of liquidity include cash generated from operations, borrowings under our Revolving Facility and, from time to time, debt and equity offerings. We believe our current resources are sufficient to meet our working capital requirements for our current business for at least the next 12 months and thereafter for the foreseeable future. As of June 30, 2026, we had $42.7 million of cash and cash equivalents and $164.5 million of borrowing availability under our Revolving Facility. We have not provided foreign withholding taxes, state income taxes and federal and state taxes on foreign currency gains/losses on accumulated undistributed earnings of certain foreign subsidiaries because these earnings are considered to be permanently reinvested. It is not practicable to determine the amount of the unrecognized deferred tax liability related to the undistributed earnings. We do not anticipate the need to repatriate funds to the U.S. to satisfy domestic liquidity needs arising in the ordinary course of business, including liquidity needs associated with our domestic debt service requirements. We may, from time to time, seek to retire or purchase additional amounts of our outstanding equity and/or debt securities through cash purchases and/or exchanges for other securities, in open market purchases, privately negotiated transactions or otherwise. Such repurchases or exchanges, if any, will depend on prevailing market conditions, our liquidity requirements, contractual restrictions and other factors. The amounts involved may be material. Refer to “Part II Item 2 - Unregistered Sales of Equity Securities and Use of Proceeds.” 24 Table of Contents Cash Flow Summary The following table sets forth a summary of the net cash provided by (used in) operating, investing and financing activities for the six months ended June 30, 2026 and 2025: Six Months Ended June 30, 2026 2025 (Dollars in millions) Net cash provided by operating activities $ 45.5 $ 43.3 Net cash used in investing activities (29.6) (17.2) Net cash used in financing activities (61.9) (29.5) Net decrease in cash and cash equivalents $ (46.0) $ (3.4) Cash Flows from Operating Activities Net cash provided by operating activities increased by $2.2 million to $45.5 million for the six months ended June 30, 2026 as compared to $43.3 million in the corresponding prior year period. Net cash provided by operating activities during the current period primarily reflects unfavorable changes in primary working capital driven by the timing of customer payments partially offset by lower coal inventory. Current period cash flows from operating activities also includes the results of Phoenix Global. Cash Flows from Investing Activities Net cash used in investing activities increased by $12.4 million to $29.6 million for the six months ended June 30, 2026 as compared to $17.2 million in the corresponding prior year period. The increase is primarily related to the inclusion of capital expenditures for Phoenix Global in the current year period. This increase was partially offset by $1.8 million received primarily related to the settlement of final working capital for the Phoenix Global acquisition during the current year period. Refer to “Capital Requirements and Expenditures” below for further detail. Cash Flows from Financing Activities Net cash used in financing activities increased by $32.4 million to $61.9 million for the six months ended June 30, 2026 as compared to $29.5 million in the corresponding prior year period. The increase in net cash used in financing activities was primarily driven by net repayments of $32.5 million on the Revolving Facility and an increase in repayments of finance lease liabilities of $2.8 million. These increases in the current year period were partially offset by lower cash remittances of $1.9 million for taxes related to vestings on equity classified awards. Dividends On April 30, 2026, SunCoke's Board of Directors declared a cash dividend of $0.12 per share of the Company's common stock. This dividend was paid on June 2, 2026, to stockholders of record on May 15, 2026. Additionally, on July 30, 2026, SunCoke's Board of Directors declared a cash dividend of $0.12 per share of the Company's common stock. This dividend will be paid on September 2, 2026, to stockholders of record on August 17, 2026. Covenants As of June 30, 2026, we were in compliance with all applicable debt covenants. We do not anticipate a violation of these covenants nor do we anticipate that any of these covenants will restrict our operations or our ability to obtain additional financing. See Note 7 to the consolidated financial statements for details on debt covenants. Capital Requirements and Expenditures Our operations are capital intensive, requiring significant investment to upgrade or enhance existing operations and to meet environmental and operational regulations. The level of future capital expenditures will depend on various factors, including market conditions, regulatory requirements and customer requirements, and may differ from current or anticipated levels. Material changes in capital expenditure levels may impact financial results, including but not limited to the amount of depreciation, interest expense and repair and maintenance expense. Our capital requirements have consisted, and are expected to consist, primarily of: •Ongoing capital expenditures required to maintain equipment reliability, the integrity and safety of our coke ovens, steam generators and assets at our terminals and operating sites and to comply with environmental regulations. Ongoing capital expenditures are made to replace partially or fully depreciated assets in order to 25 Table of Contents maintain the existing operating capacity of the assets and/or to extend their useful lives and also include new equipment that improves the efficiency, reliability or effectiveness of existing assets. Ongoing capital expenditures do not include normal repairs and maintenance expenses, which are expensed as incurred; •Expansion capital expenditures to acquire and/or construct complementary assets to grow our business and to expand existing facilities as well as capital expenditures made to grow our business through new markets or enable the renewal of a coke sales agreement and/or industrial services agreement and on which we expect to earn a reasonable return; and •Environmental project expenditures to ensure that our existing facilities operate in accordance with changing regulations. The following table summarizes our capital expenditures: Six Months Ended June 30, 2026 2025 (Dollars in millions) Ongoing capital $ 32.9 $ 9.5 Expansion capital — 8.0 Total capital expenditures(1) $ 32.9 $ 17.5 (1)Reflects actual cash payments during the periods presented for our capital requirements. Critical Accounting Policies and Estimates There have been no significant changes to our accounting policies or estimates during the three months ended June 30, 2026 compared with those disclosed in Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our Annual Report on Form 10-K for the year ended December 31, 2025. Recent Accounting Standards See Note 1 to our consolidated financial statements for further detail.