8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

January 22, 2026

Date of Report (date of earliest event reported)

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SunCoke Energy, Inc.

(Exact name of registrant as specified in its charter)

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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter)

Emerging growth company    ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Item 1.01 Entry into a Material Definitive Agreement

On January 22, 2026, SunCoke 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 the Company’s Granite City, Illinois, cokemaking facility during the 2026 Contract Period; and

(iii)to maintain the Company’s current minimum steam supply obligation.

Item 7.01. Regulation FD Disclosure.

A copy of the press release announcing the extension of the Company’s coke supply agreement with U.S. Steel is attached as Exhibit 99.1 to this Current Report on Form 8-K. This Exhibit 99.1 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities under that Section and shall not be deemed to be incorporated by reference into any filing of the Registrant under the Securities Act of 1933 or the Exchange Act.

Item 9.01 - Financial Statements and Exhibits.

(d): The following exhibits are being filed herewith:

Safe Harbor Statement

Statements contained in this report, or the exhibits to this report, that state the Company's or its 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 1933, as amended, and the Securities Exchange Act of 1934, as amended. The Company's actual results could differ materially from those projected in such forward-looking statements. Factors that could affect those results include those mentioned in the documents that the Company has filed with the Securities and Exchange Commission.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized on this 22nd day of January, 2026.

Document

Exhibit 99.1

SUNCOKE ENERGY, INC. ANNOUNCES EXTENSION OF GRANITE CITY COKEMAKING AGREEMENT

LISLE, Ill. – SunCoke Energy, Inc. (NYSE: SXC) and United States Steel (“U.S. Steel”) have agreed to a 1-year extension of their cokemaking agreement, under which SunCoke will continue to provide metallurgical coke to U.S. Steel from its Granite City cokemaking facility. The contract has been extended through December 31, 2026, and key terms of the agreement are similar to the prior extension.

SUNCOKE ENERGY, INC.

SunCoke Energy, Inc. (NYSE: SXC) supplies high-quality coke to domestic and international customers. Our coke is used in the blast furnace production of steel as well as the foundry production of casted iron, with the majority of sales under long-term, take-or-pay contracts. We also export coke to overseas customers seeking high-quality product for their blast furnaces. Our process utilizes an innovative heat-recovery technology that captures excess heat for steam or electrical power generation and draws upon more than 60 years of cokemaking experience to operate our facilities in Illinois, Indiana, Ohio, Virginia and Brazil. Our industrial services business provides export and domestic material handling services to coke, coal, steel, power and other bulk customers, as well as mission-critical services to leading steel producers globally. The logistics terminals have the collective capacity to mix and transload more than 40 million tons of material each year and are strategically located to reach Gulf Coast, East Coast, Great Lakes and international ports. Additional industrial services include the removal, handling, and processing of molten slag at customer sites, as well as preparation and transportation of metal scraps, raw materials, and finished products. To learn more about SunCoke Energy, Inc., visit our website at www.suncoke.com.

SunCoke routinely announces material information to investors and the marketplace using press releases, Securities and Exchange Commission filings, public conference calls, webcasts, sustainability reports, and SunCoke's website at https://www.suncoke.com/en/investors/overview. The information that SunCoke posts to its website may be deemed to be material. Accordingly, SunCoke encourages investors and others interested in SunCoke to routinely monitor and review the information that SunCoke posts on its website, in addition to following SunCoke's press releases, Securities and Exchange Commission filings, sustainability reports, and public conference calls and webcasts.

FORWARD-LOOKING STATEMENTS

This press release contains “forward-looking statements” (as defined in Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act

Exhibit 99.1

of 1934, as amended). Forward-looking statements often may be identified by the use of such words as "believe," "expect," "plan," "project," "intend," "anticipate," "estimate," "predict," "potential," "continue," "may," "will," "should," or the negative of these terms, or similar expressions. However, the absence of these words or similar expressions does not mean that a statement is not forward-looking. Any statements made in this press release that are not statements of historical fact, are forward-looking statements and should be evaluated as such. Forward-looking statements represent only our present beliefs regarding future events, many of which are inherently uncertain and involve significant known and unknown risks and uncertainties (many of which are beyond the control of SunCoke) that could cause our actual results and financial condition to differ materially from the anticipated results and financial condition indicated in such forward-looking statements. These risks and uncertainties include, but are not limited to, the risks and uncertainties described in Item 1A (“Risk Factors”) of our Annual Report on Form 10-K for the most recently completed fiscal year, as well as those described from time to time in our other reports and filings with the Securities and Exchange Commission (SEC).

In accordance with the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, SunCoke has included in its filings with the SEC cautionary language identifying important factors (but not necessarily all the important factors) that could cause actual results to differ materially from those expressed in any forward-looking statement made by SunCoke. For information concerning these factors and other important information regarding the matters discussed in this press release, see SunCoke's SEC filings, copies of which are available free of charge on SunCoke's website at www.suncoke.com or on the SEC's website at www.sec.gov. All forward-looking statements included in this press release are expressly qualified in their entirety by such cautionary statements. Unpredictable or unknown factors not discussed in this press release also could have material adverse effects on forward-looking statements.

Forward-looking statements are not guarantees of future performance, but are based upon the current knowledge, beliefs and expectations of SunCoke management, and upon assumptions by SunCoke concerning future conditions, any or all of which ultimately may prove to be inaccurate. You should not place undue reliance on these forward-looking statements, which speak only as of the date of this press release. SunCoke does not intend, and expressly disclaims any obligation, to update or alter its forward-looking statements (or associated cautionary language), whether as a result of new information, future events, or otherwise, after the date of this press release except as required by applicable law.

Investor/Media Inquiries:

Sharon Doyle

Manager, Investor Relations

(630) 824-1907