Form 4 Filing for Core Natural Resources, Inc.

This Form 4 filing details a transaction by Ronald C. Keating, a director at Core Natural Resources, Inc. On April 30, 2026, Mr. Keating was granted 1,390 restricted stock units (RSUs) under the Issuer's Omnibus Performance Incentive Plan. These RSUs vest on the first anniversary of the grant date, with each RSU representing a contingent right to one share of the Issuer's common stock. The reported shares are currently unvested. The transaction code "A" indicates acquisition, and the price per share is $0.00, suggesting a grant rather than a purchase. Mr. Keating holds these shares directly, and following this transaction, he holds 1,390 shares, all of which are unvested RSUs.