[Form 4] Core Natural Resources, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Core Natural Resources (CNR) reported insider transactions by Executive Chair and CEO James A. Brock. On November 13, 2025, 140,760 common shares were transferred at $0 from a revocable trust for the benefit of his spouse to a spousal lifetime access trust (SLAT-1). The filing also notes 24,440 shares held indirectly via the Lee Ann Brock Trust.

Separately on the same date, the reporting person contributed 117,398 common shares, previously reported as directly owned, to a grantor retained annuity trust (GRAT-1). These estate-planning transfers were reported as indirect holdings and involved no purchase or sale proceeds.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Brock James A

(Last) (First) (Middle)

275 TECHNOLOGY DRIVE, SUITE 101

(Street)

CANONSBURG PA 15317

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Core Natural Resources, Inc. [ CNR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive Chair and CEO

3. Date of Earliest Transaction (Month/Day/Year)
11/13/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common stock, par value $0.01 per share	11/13/2025		G(1)		140,760	D	$0	24,440	I	Lee Ann Brock Trust
Common stock, par value $0.01 per share	11/13/2025		G(1)		140,760	A	$0	140,760	I	By SLAT-1
Common stock, par value $0.01 per share								117,398(2)	I	By GRAT-1(2)
Common stock, par value $0.01 per share								253,177(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. On November 13, 2025, the revocable trust for which the reporting person's spouse is the sole trustee and beneficiary transferred 140,760 shares to a spousal lifetime access trust (SLAT 1) for the benefit of the reporting person's spouse and children.

2. On November 13, 2025, the reporting person contributed 117,398 shares, which were previously reported as directly owned, to a grantor retained annuity trust (GRAT 1) of which the reporting person is the sole grantor, trustee and annuity beneficiary.

	/s/ Rosemary L. Klein, as Attorney-in-Fact for James A. Brock	11/14/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did CNR's CEO report on Form 4?

He reported transfers of 140,760 shares to a spousal lifetime access trust (SLAT-1) and 117,398 shares to a grantor retained annuity trust (GRAT-1), both on November 13, 2025.

Were these open-market transactions for CNR (CNR) shares?

No. The transfers were reported at $0 and reflect movement of shares to trusts rather than market purchases or sales.

How many shares moved to SLAT-1?

140,760 common shares were transferred to SLAT-1 for the benefit of the reporting person's spouse and children.

What happened to the 117,398 CNR shares?

The reporting person contributed 117,398 shares, previously reported as directly owned, to GRAT-1.

Does the filing list any indirect holdings after these transfers?

Yes. It notes 24,440 shares indirectly via the Lee Ann Brock Trust and holdings via SLAT-1 and GRAT-1 as described.

What is the role of the reporting person at CNR?

He is Executive Chair and CEO and also a Director of Core Natural Resources, Inc.