PATRICK A. KRIEGSHAUSER - 17 Sep 2025 Form 4 Insider Report for Core Natural Resources, Inc. (CNR)

Role: Director
Signature: /s/ Rosemary L. Klein, Attorney-in-Fact for Patrick A. Kriegshauser
Issuer symbol: CNR
Transactions as of: 17 Sep 2025
Net transactions value: -$234,524
Form type: 4
Filing time: 18 Sep 2025, 16:05:02 UTC
Previous filing: 20 Feb 2025
Next filing: 24 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
KRIEGSHAUSER PATRICK A	Director	275 TECHNOLOGY DRIVE, SUITE 101, CANONSBURG	/s/ Rosemary L. Klein, Attorney-in-Fact for Patrick A. Kriegshauser	18 Sep 2025	0001046085

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CNR	Common stock, par value $0.01 per share	Sale	$234,524	-3,043	-12%	$77.07	23,348	17 Sep 2025	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares of common stock sold to cover the Reporting Person's tax liability from the vesting of restricted stock awards previously granted to the Reporting Person that fully vested in connection with the terms of the Agreement and Plan of Merger, dated as of August 20, 2024, by and among Core Natural Resources, Inc. (formerly known as CONSOL Energy Inc.), Mountain Range Merger Sub Inc. and Arch Resources, Inc.
F2	Of the 23,348 shares reported, 3,348 are unvested restricted stock units.

Content

Represents shares of common stock sold to cover the Reporting Person's tax liability from the vesting of restricted stock awards previously granted to the Reporting Person that fully vested in connection with the terms of the Agreement and Plan of Merger, dated as of August 20, 2024, by and among Core Natural Resources, Inc. (formerly known as CONSOL Energy Inc.), Mountain Range Merger Sub Inc. and Arch Resources, Inc.

Of the 23,348 shares reported, 3,348 are unvested restricted stock units.