|4/AFeb 23, 4:11 PM ET

Brock James A 4/A

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

Research Summary

AI-generated summary of this filing

Updated

Core Natural Resources CEO James A. Brock Sells 2,960 Shares

What Happened
James A. Brock, Executive Chair and CEO (also a Director) of Core Natural Resources, had 2,960 shares of CNR common stock withheld to satisfy a tax liability related to an equity event. The withholding occurred on 2026-02-18 at $88.96 per share, totaling $263,322. This was a tax-withholding disposal (reported with transaction code F), not an open-market sale.

Key Details

  • Transaction date: 2026-02-18; reported originally on Form 4 on 2026-02-19 and amended on 2026-02-23 to correct clerical errors.
  • Shares withheld/disposed: 2,960 shares at $88.96 per share; total value $263,322.
  • Shares beneficially owned after transaction (corrected): 266,975 shares, of which 44,640 are unvested restricted stock units (RSUs).
  • Footnotes: The amended filing corrects an earlier clerical error that misreported the number of shares withheld for taxes and that misstated total beneficial ownership and unvested RSUs.
  • Filing type: Amended Form 4 to correct reporting errors. No 10b5-1 plan or other sale plan is disclosed in the amendment.

Context
Tax-withholding dispositions are common after option exercises or RSU vesting and generally reflect routine tax obligations rather than a deliberate market-timed sale. The filing amendment corrects the record; the corrected ownership figures should be used when assessing the insider’s holdings.

Insider Transaction Report

Form 4/AAmended
Period: 2026-02-17
Brock James A
DirectorExecutive Chair and CEO
Transactions
  • Tax Payment

    Common stock, par value $0.01 per share

    [F1]
    2026-02-18$88.96/sh2,960$263,322271,415 total
Holdings
  • Common stock, par value $0.01 per share

    [F2]
    266,975
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 securities withheld to satisfy the reporting person's tax liability was 2,960 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 266,975, of which 44,640 shares represent unvested restricted stock units.
Signature
/s/ Rosemary L. Klein, Attorney-in-Fact for James A. Brock|2026-02-23

Documents

1 file
  • 4
    ownership.xml

    4/A