Joseph P. Platt Jr. - 17 Feb 2026 Form 4/A - Amendment Insider Report for Core Natural Resources, Inc. (CNR)

Role
Director
Signature
/s/ Rosemary L. Klein, Attorney-in-Fact for Joseph P. Platt, Jr.
Issuer symbol
CNR
Transactions as of
17 Feb 2026
Net transactions value
$0
Form type
4/A - Amendment
Filing time
24 Feb 2026, 17:22:39 UTC
Date Of Original Report
19 Feb 2026
Previous filing
19 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Platt Joseph P JR Director 275 TECHNOLOGY DRIVE, SUITE 101, CANONSBURG /s/ Rosemary L. Klein, Attorney-in-Fact for Joseph P. Platt, Jr. 24 Feb 2026 0001399967

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding CNR Common stock, par value $0.01 per share 40,660 17 Feb 2026 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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. The corrected amount of securities beneficially owned by the reporting person is 40,660.