SunCoke Energy, Inc.

1. General

Description of Business

SunCoke Energy, Inc. (“SunCoke Energy,” “SunCoke,” “Company,” “we,” “our” and “us”) is the largest independent producer of high-quality coke in the Americas, as measured by tons of coke produced each year, and has more than 60 years of coke production experience. Coke is produced by heating metallurgical coal in a refractory oven, which releases certain volatile components from the coal, thus transforming the coal into coke. Our coke is primarily used as a principal raw material in the blast furnace steelmaking process as well as in the foundry production of casted iron, and the majority of our sales are derived from blast furnace coke sales made under long-term, take-or-pay agreements. We also sell coke produced utilizing capacity in excess of that reserved for our long-term, take-or-pay agreements to customers in both the export and North American domestic coke markets seeking high-quality product for their blast furnaces. We have designed, developed and built, and we currently own and operate, five cokemaking facilities in the United States (“U.S.”) with collective nameplate capacity to produce approximately 4.2 million tons of blast furnace coke per year. Additionally, we designed and currently operateone cokemaking facility in Brazil under licensing and operating agreements on behalf of ArcelorMittal Brasil S.A. (“ArcelorMittal Brazil”), which has approximately 1.7 million tons of annual cokemaking capacity. Our cokemaking ovens utilize efficient, modern heat recovery technology designed to combust the coal’s volatile components liberated during the cokemaking process and use the resulting heat to create steam or electricity for sale.

We also own and operate an industrial services business that provides export and domestic material handling and/or mixing services to coke, coal, steel, power and other bulk customers, as well as mission-critical mill services to leading steel producers globally. Our logistics terminals have the collective capacity to mix and transload more than 40 million tons of coal and other products annually and have storage capacity of approximately 3 million tons. These terminals are strategically located to reach Gulf Coast, East Coast, Great Lakes and international ports. Industrial services also 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.

Acquisition of Flame Aggregator, LLC

On August 1, 2025, pursuant to the terms of the Agreement and Plan of Merger (the “Merger Agreement”) announced on May 28, 2025, we completed the acquisition of Flame Aggregator, LLC (“Phoenix Global”), a privately held provider of mission-critical mill services to major steel producing companies, for purchase consideration of $295.8 million. The Company funded the transaction with cash on-hand and borrowings on our revolving credit facility, due 2030 (“Revolving Facility”). See Note 3 – Acquisitions for further detail.

Basis of Presentation

The accompanying unaudited consolidated financial statements included herein have been prepared in accordance with accounting principles generally accepted in the U.S. (“GAAP”) for interim reporting. Certain information and disclosures normally included in financial statements have been omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). In management’s opinion, the financial statements reflect all adjustments, which are of a normal recurring nature, necessary for a fair presentation of the results of operations, financial position and cash flows for the periods presented. The results of operations for the period ended September 30, 2025 are not necessarily indicative of the operating results expected for the entire year. These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2024.

Update to Reportable Segments

Prior to the acquisition of Phoenix Global, the Company consisted ofthree reportable segments, Domestic Coke, Brazil Coke and Logistics. Following the acquisition, the Company now consists oftwo reportable segments, Domestic Coke and Industrial Services. Accordingly, the Company has recasted all segment information for all prior periods presented herein to reflect this change. See Note 14 – Business Segment Information for further detail.