SunCoke Energy (SXC) 8-K Suncoke Energy, Inc. Appoints Martha Z. Carnes

Exhibit 99.1

Investors and Media:

Shantanu Agrawal

(630)824-1907

SUNCOKE ENERGY, INC. APPOINTS MARTHA Z. CARNES

TO ITS BOARD OF DIRECTORS

LISLE, Ill. (December 5, 2019) - SunCoke Energy, Inc. (NYSE: SXC) today announced that Martha Z. Carnes has been appointed to the Board of Directors, effective immediately.

“We are very pleased to welcome Martha Carnes to our Board as a new independent director,” said Mike Rippey, President and Chief Executive Officer of SunCoke Energy, Inc. “Martha is an experienced finance and public accounting executive with strategic planning, managerial and leadership expertise, having led the design and execution of market and sector strategies for clients in the mining, utilities and energy industries. In addition, she brings vast experience with capital markets and financing activities, having served as lead audit partner on some of the largest merger and acquisition transactions completed in the energy sector. We believe that Martha’s substantial experience in business development, finance and planning will prove very beneficial going forward.”

During the course of her career, Ms. Carnes has served in various senior roles at Pricewaterhouse Coopers, or PwC (an international accounting firm), including as: (i) Assurance Partner serving large, publicly traded companies in the energy industry; (ii) Managing Partner of PwC’s Houston, Texas office; and (iii) PwC’s Energy and Mining leader for the United States, where she led the firm’s energy and mining assurance, tax and advisory practices. She currently serves as a director on the Supervisory Board of Core Laboratories N.V., a Netherlands company (one of the world’s largest providers of reservoir description and production enhancement services to the oil and gas industry), where she is Chairman of the Audit Committee. She is also a director of Matrix Service Company (a provider of design, engineering, construction, repair and maintenance services to industrial and energy clients in North America), where she Chairs the Audit Committee and serves on the Compensation, and Nominating and Corporate Governance committees.

“I am very happy to be joining SunCoke’s Board at this exciting and challenging stage of the Company’s development,” said Ms. Carnes. “I look forward to working with Mike and the rest of the Board to help position SunCoke for growth and create value-enhancing opportunities for our shareholders.”

ABOUT SUNCOKE ENERGY, INC.

SunCoke Energy, Inc. (NYSE: SXC) supplies high-quality coke to the integrated steel industry under long-term,take-or-pay contracts that pass through commodity and certain operating costs to customers. We utilize an innovative heat-recovery cokemaking technology that captures excess heat for steam or electrical power generation. Our cokemaking facilities are located in Illinois, Indiana, Ohio, Virginia and Brazil. We have more than 55 years of cokemaking experience serving the integrated steel industry. In addition, we provide export and domestic material handling services to coke, coal, steel, power and other bulk and liquids customers. Our 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. To learn more about SunCoke Energy, Inc., visit our website atwww.suncoke.com.

FORWARD-LOOKING STATEMENTS

Some of the statements included in this press release constitute “forward-looking statements” (as defined in Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended). Forward-looking statements include all statements that are not historical facts and 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. Forward-looking statements are inherently uncertain and involve significant known and unknown risks and uncertainties (many of which are beyond the control of SXC) that could cause actual results to differ materially.

Such risks and uncertainties include, but are not limited to domestic and international economic, political, business, operational, competitive, regulatory and/or market factors affecting SXC, as well as uncertainties related to: pending or future litigation, legislation or regulatory actions; liability for remedial actions or assessments under existing or future environmental regulations; gains and losses related to acquisition, disposition or impairment of assets; recapitalizations; access to, and costs of, capital; the effects of changes in accounting rules applicable to SXC; and changes in tax, environmental and other laws and regulations applicable to SXC’s businesses.

Forward-looking statements are not guarantees of future performance, but are based upon the current knowledge, beliefs and expectations of SXC management, and upon assumptions by SXC concerning future conditions, any or all of which ultimately may prove to be inaccurate. The reader should not place undue reliance on these forward-looking statements, which speak only as of the date of this press release. SXC 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.

In accordance with the safe harbor provisions of the Private Securities Litigation Reform Act of 1995, SXC has included in its filings with the Securities and Exchange Commission 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 SXC. For information concerning these factors, see SXC’s Securities and Exchange Commission filings such as its annual and quarterly reports and current reports on Form8-K, copies of which are available free of charge on SXC’s website at www.suncoke.com. 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 release also could have material adverse effects on forward-looking statements.

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