Other Events. On July 30, 2026, the Company issued a press release announcing the declaration of its quarterly cash dividend. A copy of this press release is attached hereto as Exhibit 99.3 and is incorporated herein by reference. Safe Harbor Statement Statements contained in the exhibits to this report that state the Company’s or management’s expectations or predictions of the future are forward-looking statements intended to be covered by the safe harbor provisions of the Securities Act of…

Results of Operations and Financial Condition. On July 30, 2026, SunCoke Energy, Inc. (the “Company”) issued a press release announcing financial results for the second quarter of 2026. A copy of this press release is attached as Exhibit 99.1 and is incorporated herein by reference.

Results of Operations and Financial Condition. On April 30, 2026, SunCoke Energy, Inc. (the “Company”) issued a press release announcing first quarter 2026 financial results. A copy of this press release is attached as Exhibit 99.1 and is incorporated herein by reference.

Other Events. On April 30, 2026, the Company issued a press release announcing the declaration of its quarterly cash dividend. A copy of this press release is attached hereto as Exhibit 99.3 and is incorporated herein by reference. Safe Harbor Statement Statements contained in the exhibits to this report that state the Company’s or management’s expectations or predictions of the future are forward-looking statements intended to be covered by the safe harbor provisions of the Securities Act of…

Director — Mr. Michael W. Lewis: Mr. Michael W. Lewis is retiring from the Board of Directors to focus on personal commitments.

Results of Operations and Financial Condition. On February 17, 2026, SunCoke Energy, Inc. (the “Company”) issued a press release announcing fourth quarter and full-year 2025 financial results. A copy of this press release is attached as Exhibit 99.1 and is incorporated herein by reference.

Entry into a Material Definitive Agreement On January 22, 2026, Su nCoke Energy, Inc. (the "Company") announced that the Company and United States Steel Corporation (“ U.S. Steel ”) have agreed: (i) to extend the term of their existing metallurgical coke supply agreement for a period of twelve (12) months, from January 1, 2026 to December 31, 2026 (the " 2026 Contract Period ”); (ii) that the Company will produce and deliver approximately 590,000 tons of metallurgical coke to U. S. Steel from…

Chief Financial Officer (CFO) — Mark W. Marinko: Mr. Marinko is retiring as CFO, and Shantanu Agrawal will succeed him in the role.

Entry into a Material Definitive Agreement. On November 18, 2025, SunCoke Energy, Inc. (the “Company”) announced that its Haverhill Coke Company LLC subsidiary, located in Franklin Furnace, Ohio, has amended and restated certain existing agreements to supply metallurgical coke to Cleveland-Cliffs Steel LLC, a subsidiary of Cleveland-Cliffs Inc., on terms similar to existing agreements. The foregoing brief description is qualified in its entirety by reference to the amendment and restatement,…

Other Events. On November 4, 2025, the Company issued a press release announcing the declaration of its quarterly cash dividend. A copy of this press release is attached hereto as Exhibit 99.3 and is incorporated herein by reference. Safe Harbor Statement Statements contained in the exhibits to this report that state the Company’s or management’s expectations or predictions of the future are forward-looking statements intended to be covered by the safe harbor provisions of the Securities Act…

Results of Operations and Financial Condition. On November 4, 2025, SunCoke Energy, Inc. (the “Company”) issued a press release announcing its financial results for the third quarter of 2025. A copy of this press release is attached as Exhibit 99.1 and is incorporated herein by reference.

Completion of Acquisition or Disposition of Assets. On August 1, 2025, SunCoke Energy, Inc. (the “ Company ”) completed its previously announced acquisition of Flame Aggregator, LLC, a Delaware limited liability company (“ Flame Aggregator ”), which, together with its subsidiaries, operates as Phoenix Global, a privately held provider of mission-critical mill services to major steel producing companies. The acquisition was consummated pursuant to an Agreement and Plan of Merger (the “ Merger…

Other Events. On July 30, 2025, the Company issued a press release announcing the declaration of its quarterly cash dividend. A copy of this press release is attached hereto as Exhibit 99.3 and is incorporated herein by reference. Safe Harbor Statement Statements contained in the exhibits to this report that state the Company’s or management’s expectations or predictions of the future are forward-looking statements intended to be covered by the safe harbor provisions of the Securities Act of…

Results of Operations and Financial Condition. On July 30, 2025, SunCoke Energy, Inc. (the “Company”) issued a press release announcing its financial results for the second quarter of 2025. A copy of this press release is attached as Exhibit 99.1 and is incorporated herein by reference.

Creation of a Direct Financial Obligation. The information set forth in

Entry into a Material Definitive Agreement. Amendment to Revolving Credit Facility On July 25, 2025, SunCoke Energy, Inc. (the “ Company ”) amended its existing revolving credit facility, which is agented by Bank of America, N.A. (as so amended, the “new revolving credit facility”). The new revolving credit facility, among other things: (i) extends the maturity of the revolving credit facility to July 2030 (subject to a springing maturity tied to the Company’s 2021 senior notes) and (ii) decr…

Entry into a Material Definitive Agreement. SunCoke Energy, Inc. (the “Company”) today announced that it has entered into a definitive Merger Agreement (as defined below) pursuant to which the Company will acquire all of the common units of Flame Aggregator, LLC, a Delaware limited liability company (“Flame Aggregator”) which, together with its subsidiaries, operates as Phoenix Global, a privately held provider of mission-critical mill services to major steel producing companies. The Merger A…

Other Events. On April 30, 2025, the Company issued a press release announcing the declaration of its quarterly cash dividend. A copy of this press release is attached hereto as Exhibit 99.3 and is incorporated herein by reference. Safe Harbor Statement Statements contained in the exhibits to this report that state the Company’s or management’s expectations or predictions of the future are forward-looking statements intended to be covered by the safe harbor provisions of the Securities Act of…

Results of Operations and Financial Condition. On April 30, 2025, SunCoke Energy, Inc. (the “Company”) issued a press release announcing its financial results for the first quarter of 2025. A copy of this press release is attached as Exhibit 99.1 and is incorporated herein by reference.

Other Events. On January 30, 2025, the Company issued a press release announcing the declaration of its quarterly cash dividend. A copy of this press release is attached hereto as Exhibit 99.3 and is incorporated herein by reference. Safe Harbor Statement Statements contained in the exhibits to this report that state the Company’s or management’s expectations or predictions of the future are forward-looking statements intended to be covered by the safe harbor provisions of the Securities Act…

Results of Operations and Financial Condition. On January 30, 2025, SunCoke Energy, Inc. (the “Company”) issued a press release announcing fourth quarter and full-year 2024 financial results. A copy of this press release is attached as Exhibit 99.1 and is incorporated herein by reference.

Other Events. On October 31, 2024, the Company issued a press release announcing the declaration of its quarterly cash dividend. A copy of this press release is attached hereto as Exhibit 99.3 and is incorporated herein by reference. Safe Harbor Statement Statements contained in the exhibits to this report that state the Company’s or management’s expectations or predictions of the future are forward-looking statements intended to be covered by the safe harbor provisions of the Securities Act…

Results of Operations and Financial Condition. On October 31, 2024, SunCoke Energy, Inc. (the “Company”) issued a press release announcing its financial results for the third quarter of 2024. A copy of this press release is attached as Exhibit 99.1 and is incorporated herein by reference.

Results of Operations and Financial Condition. On July 31, 2024, SunCoke Energy, Inc. (the “Company”) issued a press release announcing its financial results for the second quarter of 2024. A copy of this press release is attached as Exhibit 99.1 and is incorporated herein by reference.

Other Events. On July 31, 2024, the Company issued a press release announcing the declaration of its quarterly cash dividend. A copy of this press release is attached hereto as Exhibit 99.3 and is incorporated herein by reference. Safe Harbor Statement Statements contained in the exhibits to this report that state the Company’s or management’s expectations or predictions of the future are forward-looking statements intended to be covered by the safe harbor provisions of the Securities Act of…