Core Natural Resources corrects insider share holdings

Core Natural Resources, Inc. filed an amended insider report to correct previously misreported share holdings for executive Kurt R. Salvatori.

Accepted by SEC EDGAR 02/23/2026 - 04:16 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Core Natural Resources, Inc. filed an amended insider report to correct previously misreported share holdings for executive Kurt R. Salvatori. Due to earlier clerical rounding errors, the updated filing now shows he directly beneficially owns 24,599 common shares, including 10,455 unvested restricted stock units.

Insider Trade Summary

Holdings reported, no transactions

Holdings

Insider Salvatori Kurt R.

Role SVP, Chief Admin. Officer

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

Holdings: Common stock, par value $0.01 per share — 24,599 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 24,599, of which 10,455 shares represent unvested restricted stock units.

FAQ

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What does Core Natural Resources (CNR) disclose in this Form 4/A amendment?

Core Natural Resources reports a correction to insider holdings for Kurt R. Salvatori. The amendment fixes clerical rounding errors and now shows 24,599 directly owned common shares, of which 10,455 are unvested restricted stock units, aligning records with the actual ownership.

How many Core Natural Resources (CNR) shares does Kurt R. Salvatori now report owning?

Kurt R. Salvatori now reports direct beneficial ownership of 24,599 Core Natural Resources common shares. This total includes both vested and unvested equity, providing an updated, corrected figure after earlier Form 4 rounding errors were identified and adjusted in the amended filing.

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

After the correction, the CNR executive holds 10,455 unvested restricted stock units. These units are part of the total 24,599 common shares reported as directly beneficially owned, clarifying the previous Form 4’s mistaken disclosure of unvested awards and overall share count.

Did the Core Natural Resources (CNR) Form 4/A reflect new share purchases or sales?

The Form 4/A reflects a correction in reported holdings, not new trades. It addresses immaterial clerical rounding errors in a previous Form 4, updating the total directly beneficially owned shares and the amount of unvested restricted stock units without indicating fresh buy or sell activity.

Why did Core Natural Resources (CNR) need to amend the prior Form 4 filing?

The company amended the prior Form 4 because immaterial clerical rounding errors caused incorrect totals for directly owned shares and unvested restricted stock units. The Form 4/A rectifies these inaccuracies, ensuring the SEC record now reflects the correct insider ownership amounts for Kurt R. Salvatori.

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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^*

Salvatori Kurt R.

(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 Admin. 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								24,599(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 24,599, of which 10,455 shares represent unvested restricted stock units.

	/s/ Rosemary L. Klein, Attorney-in-Fact for Kurt R. Salvatori	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.