Core Natural Resources corrects insider share holdings

Core Natural Resources, Inc. executive Schuller George John Jr., SVP and Chief Operating Officer, filed an amended Form 4 to correct previously reported share ownership.

Rhea-AI Filing Summary

Core Natural Resources, Inc. executive Schuller George John Jr., SVP and Chief Operating Officer, filed an amended Form 4 to correct previously reported share ownership. A prior filing contained immaterial clerical rounding errors in the total amount of securities directly beneficially owned and in the amount of unvested restricted stock units.

The corrected figure shows he beneficially owns 27,344 shares of common stock, of which 16,280 shares are unvested restricted stock units. This amendment updates ownership information rather than reporting a new purchase or sale.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Schuller George John JR

Role SVP, Chief Operating Officer

Type	Security	Shares	Price	Value
holding	Common stock, par value $0.01 per share	--	--	--

Holdings After Transaction: Common stock, par value $0.01 per share — 27,344 shares (Direct)

Footnotes (1)

1. F1. On February 19, 2026, due to immaterial clerical rounding errors, the reporting person filed a Form 4 which inadvertently reported an incorrect total amount of securities directly beneficially owned by the reporting person and mistakenly indicated an incorrect amount of unvested restricted stock units owned. The corrected amount of securities beneficially owned by the reporting person is 27,344, of which 16,280 shares represent unvested restricted stock units.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Core Natural Resources (CNR) Form 4/A amendment report?

The Form 4/A reports a correction to previously disclosed share ownership for SVP and COO Schuller George John Jr. It fixes immaterial clerical rounding errors in his total directly owned shares and unvested restricted stock units, updating his accurate beneficial ownership position.

How many Core Natural Resources (CNR) shares does Schuller George John Jr. now beneficially own?

The amended filing states that Schuller George John Jr. beneficially owns 27,344 shares of Core Natural Resources common stock. This total includes both vested and unvested equity awards, with a significant portion represented by unvested restricted stock units as detailed in the amendment.

How many unvested restricted stock units does the CNR executive hold after the correction?

According to the amendment, 16,280 of the 27,344 beneficially owned shares are unvested restricted stock units. This clarifies the earlier Form 4, which mistakenly reported an incorrect amount of unvested restricted stock units due to immaterial clerical rounding errors.

Did the Core Natural Resources (CNR) Form 4/A disclose any new stock purchases or sales?

The Form 4/A focuses on correcting ownership figures and does not describe a new purchase or sale. It revises the total number of securities and unvested restricted stock units beneficially owned after earlier immaterial clerical rounding errors in the prior Form 4 filing.

Why did Core Natural Resources SVP file this amended Form 4/A?

The SVP filed the amended Form 4/A because an earlier Form 4, dated February 19, 2026, contained immaterial clerical rounding errors. Those errors affected the reported total of directly beneficially owned securities and the amount of unvested restricted stock units held.

What is the significance of the 7,344 shares reported in the CNR Form 4/A?

The 27,344 shares represent the corrected total number of Core Natural Resources common shares beneficially owned by the executive. This figure, including 16,280 unvested restricted stock units, reflects his updated equity stake after fixing earlier immaterial reporting inaccuracies.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/23/2026 - 04:28 PM Learn about SEC filing dates

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^*

Schuller George John JR

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, Chief Operating Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/17/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)
02/19/2026

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								27,344(1)	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 February 19, 2026, due to immaterial clerical rounding errors, the reporting person filed a Form 4 which inadvertently reported an incorrect total amount of securities directly beneficially owned by the reporting person and mistakenly indicated an incorrect amount of unvested restricted stock units owned. The corrected amount of securities beneficially owned by the reporting person is 27,344, of which 16,280 shares represent unvested restricted stock units.

	/s/ Rosemary L. Klein, Attorney-in-Fact for George John Schuller, Jr.	02/23/2026
	** 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.