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Core Natural (CNR) CAO corrects Form 4 tax withholding entry

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Form Type
4/A

Rhea-AI Filing Summary

Core Natural Resources, Inc. Chief Accounting Officer John Rothka filed an amended Form 4 to correct earlier clerical errors in his reported equity holdings. The amendment confirms that on February 18, 2026, 79 shares of common stock were withheld to satisfy his tax liability.

The filing also updates his directly beneficially owned position to 9,990 shares of common stock, of which 1,314 shares are unvested restricted stock units. The company describes the prior discrepancies as immaterial clerical rounding errors.

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Insider Rothka John
Role Chief Accounting Officer
Type Security Shares Price Value
Tax Withholding Common stock, par value $0.01 per share 79 $88.96 $7K
Holdings After Transaction: Common stock, par value $0.01 per share — 9,990 shares (Direct)
Footnotes (1)
  1. On February 19, 2026, the reporting person filed a Form 4 (the "Original Form 4") which inadvertently reported in the second row of Table I an incorrect amount of shares of common stock withheld to satisfy the reporting person's tax liability due to a clerical error. The corrected amount of shares withheld to satisfy the reporting person's tax liability was 79 shares. Due to immaterial clerical rounding errors, the reporting person's Original Form 4 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 9,990, of which 1,314 shares represent unvested restricted stock units.
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Form 4 Insider Transactions: What Each Field Means →
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*
Rothka John
(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)
Chief Accounting 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 02/18/2026 F 79(1) D $88.96 9,990(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 February 19, 2026, the reporting person filed a Form 4 (the "Original Form 4") which inadvertently reported in the second row of Table I an incorrect amount of shares of common stock withheld to satisfy the reporting person's tax liability due to a clerical error. The corrected amount of shares withheld to satisfy the reporting person's tax liability was 79 shares.
2. Due to immaterial clerical rounding errors, the reporting person's Original Form 4 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 9,990, of which 1,314 shares represent unvested restricted stock units.
/s/ Rosemary L. Klein, Attorney-in-Fact for John Rothka 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.

Source: View Original Filing on SEC EDGAR

FAQ

What does Core Natural Resources (CNR) Chief Accounting Officer correct in this Form 4/A?

The amended Form 4 corrects clerical errors in previously reported share amounts. It updates the tax-withholding share count to 79 and revises total directly beneficially owned securities to 9,990 shares, including 1,314 unvested restricted stock units, as described in the filing footnotes.

How many Core Natural Resources (CNR) shares does the CAO now beneficially own?

The filing states that John Rothka now directly beneficially owns 9,990 shares of Core Natural Resources common stock. This figure includes 1,314 shares that are unvested restricted stock units, reflecting corrected totals after earlier immaterial clerical rounding errors in the original Form 4.

What is the 79-share transaction reported in the CNR Form 4/A amendment?

The Form 4/A reports that 79 shares of Core Natural Resources common stock were disposed of to satisfy the reporting person’s tax liability. The transaction is coded “F,” indicating payment of exercise price or tax liability by delivering securities, at a price of $88.96 per share.

Does the CNR Form 4/A reflect an open-market sale by the Chief Accounting Officer?

No, the transaction is a tax-withholding disposition coded “F,” meaning shares were delivered to cover tax obligations. The filing specifies it relates to shares withheld to satisfy the reporting person’s tax liability, rather than a discretionary open-market sale of Core Natural Resources stock.

Why was the original Core Natural Resources (CNR) Form 4 considered inaccurate?

The original Form 4 contained clerical errors. It misstated the number of shares withheld for taxes and the total directly beneficially owned securities, including unvested restricted stock units. The amendment clarifies that 79 shares were withheld and that 9,990 shares are beneficially owned, with 1,314 as unvested RSUs.