Rothka John 4/A

4/A · Core Natural Resources, Inc. · Filed Feb 23, 2026

AI-generated summary of this filing

Updated Feb 23, 2026

Core Natural Resources (CNR) CAO John Rothka Withholds 79 Shares

What Happened

John Rothka, Chief Accounting Officer of Core Natural Resources, had 79 shares withheld to satisfy a tax liability (transaction code F). The shares were valued at $88.96 each, for a total of $7,028, with the withholding occurring on February 18, 2026. This filing is an amendment correcting clerical errors in an earlier Form 4.

Key Details

Transaction date and price: 79 shares withheld on 2026-02-18 at $88.96 per share (total $7,028).
Transaction code: F (payment of exercise price or tax liability — a disposal via tax withholding).
Shares owned after transaction (corrected): 9,990 total beneficially owned; 1,314 of those are unvested restricted stock units.
Filing timeline: Original Form 4 was filed Feb 19, 2026 and contained clerical/rounding errors; this amended Form 4 was filed Feb 23, 2026 to correct the withheld share amount and beneficial ownership totals (see footnotes F1 and F2).

Context

Tax withholding (code F) is a routine disposition to cover tax obligations from equity awards or option exercises; it is not an open-market sale and does not necessarily indicate buying/selling sentiment.
The amendment corrects reporting details (number of shares withheld and totals of beneficially owned/unvested securities), improving accuracy for investors tracking insider holdings.

Form 4/AAmended

Period: 2026-02-17

Chief Accounting Officer

Transactions

Tax Payment
Common stock, par value $0.01 per share
[F1][F2]
2026-02-18$88.96/sh−79$7,028→ 9,990 total

Footnotes (2)

[F1]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.
[F2]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.

Signature

/s/ Rosemary L. Klein, Attorney-in-Fact for John Rothka|2026-02-23

1 file