Core Natural Resources, Inc. — Director's Dealing 2026

Feb 20, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Core Natural Resources, Inc. (CNR)
CIK: 0001710366
Period of Report: 2026-02-17

Reporting Person: Klein Rosemary L (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-17	Common stock, par value $0.01 per share	A	5060	—	Acquired	69910	Direct
2026-02-18	Common stock, par value $0.01 per share	F	497	$88.96	Disposed	69413	Direct
2026-02-18	Common stock, par value $0.01 per share	F	746	$88.96	Disposed	68667	Direct

Footnotes

F1: Represents a grant of restricted stock units pursuant to the Issuer's Omnibus Performance Incentive Plan, which vest annually in equal installments over a period of three years, beginning on the first anniversary of the grant date. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F2: Represents shares of common stock withheld to satisfy the Reporting Person's tax liability from the vesting of restricted stock units previously granted to her.

F3: Of the 68,667 shares reported, 11,033 are unvested restricted stock units.