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.

Current securities

1. SD filingSep 23, 2026
2. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · Regulation FD DisclosureAug 19, 2026
3. Results of Operations and Financial Condition · Regulation FD DisclosureAug 6, 2026
4. Regulation FD DisclosureJun 4, 2026
5. Mine Safety - Reporting of Shutdowns and Patterns of ViolationsMay 19, 2026