Form 3 Filing and Power of Attorney for Edward L. Doheny II

This filing includes a Form 3, which reports initial beneficial ownership of securities, for Edward L. Doheny II, a director at Core Natural Resources, Inc. The filing also contains a Power of Attorney document, signed on April 30, 2026, authorizing certain officers of the company to execute and file Forms 3, 4, and 5 on behalf of Mr. Doheny. This authorization remains in effect until he is no longer required to file these forms or until revoked in writing. Mr. Doheny acknowledges that the appointed officers are not assuming his personal responsibility for compliance with Section 16 of the Securities Exchange Act of 1934.