SunCoke Energy, Inc. announced that On December 13, 2020, John W. Rowe announced his intention to resign from the Board of Directors (the “ Board”) of SunCoke Energy, Inc. (the “ Company”), effective as of December 31, 2020, to focus on his other personal and professional commitments. Mr. Rowe’s resignation does not arise from any disagreement with the Company, or its management, on any matter relating to the Company’s operations, policies or practices, or regarding the general direction of the Company. The Board has named Arthur F. Anton to replace Mr. Rowe as the Company’s non-executiveChairman, effective January 1, 2021. Mr. Anton has significant domestic and international manufacturing and distribution experience, including significant experience in the steel industry. During the course of his career, Mr. Anton has held various senior positions at The Swagelok Company (a large fluid systems technology company), most recently as Chairman of the board from September 2017 to December 2019, and as Chief Executive Officer from 2004 to 2017. Prior to joining Swagelok in 1998, Mr. Anton was a Partner at Ernst & Young LLP, where he consulted with companies in manufacturing, energy, service, and other industries. He currently serves as a director on the boards of Olympic Steel (a leading U.S. metals service center), where he is the Lead Independent Director and a member of both the Audit and Compliance Committee, and the Compensation Committee; The Sherwin-Williams Company (a major paint coatings manufacturer), where he serves as Chair of the Audit Committee; and Diebold Nixdorf, Incorporated (a leading manufacturer of automated teller, calculating, and accounting machinery), where he serves as Chair of the Finance Committee and member of the Audit Committee. Mr. Anton is also Chairman of the University Hospitals Health System in the Cleveland, Ohio area.