October 8, 2025 - Core Natural Resources, Inc. has announced that its board of directors has appointed Core's board chair, Jimmy Brock, to the additional role of chief executive officer, effective immediately. He succeeds Paul A. Lang, who is departing as CEO and board member. Brock will work closely with Lang, who has agreed to provide transition consulting services through the end of the year, as well as with the board and the management team, to ensure a seamless transition.

"I am excited to take on this expanded leadership role at a pivotal time in Core's innovation and growth," Brock said. "With its world-class operating portfolio, diversified product slate, strategic logistical network, and talented workforce, Core is positioned for tremendous growth and success in the years ahead. I look forward to working with the board and the rest of the management team to deliver operational excellence and industry-leading stockholder returns."

Brock has served as executive chair of the Core Natural Resources board since January 14, 2025, when Core was formed via a merger between Arch Resources and CONSOL Energy. Prior to that time, Brock served as chairman and chief executive officer of CONSOL Energy.

"On behalf of the board, management team, and Core employees, we want to thank Paul for his great leadership in helping execute the merger and steer the integration process over the course of the past nine months," Brock said. "He has helped lay a strong foundation for future success, and we wish him the very best in his future pursuits."

Brock Biography

Brock was elected CEO and board member of CONSOL Energy in 2017 and added the role of chairman to his CONSOL Energy responsibilities in 2024. During his more than 40 years in the industry, he has held the positions of chief operating officer, superintendent, longwall coordinator, and mine foreman. He currently serves as board chair of America's Power and the Pennsylvania Coal Alliance, and is a member of the executive committee (and past board chair) of the National Mining Association. He is also a past board chair of the West Virginia Coal Association.

About Core Natural Resources, Inc.

Core Natural Resources, Inc. (NYSE: CNR) is a world-class producer of high-quality metallurgical and high calorific value thermal coals for the global marketplace. Core's highly skilled workforce operates a best-in-sector portfolio of large-scale, low-cost longwall mines, including the Pennsylvania Mining Complex, Leer, Leer South, and West Elk mines, along with one of the world's largest and most productive surface mines, Black Thunder. The company plays an essential role in meeting the world's growing need for steel, infrastructure, and energy, while simultaneously serving the resurgent requirements of the U.S. power generation fleet. Core has an extensive and strategic logistical network – anchored by ownership positions in two East Coast marine export terminals – that provides reliable and efficient access to seaborne coal markets. The company's deeply ingrained culture is grounded in safety and compliance, continuous improvement, and financial performance, with an emphasis on stakeholder engagement and stockholder returns. Core was created in January 2025 via the merger of long-time industry leaders CONSOL Energy and Arch Resources and is based in Canonsburg, Pennsylvania.