Rosemary L. Klein - 19 Mar 2026 Form 4 Insider Report for Core Natural Resources, Inc. (CNR)

Role
SVP, CLO & Corp. Sec.
Signature
/s/ Rosemary L. Klein
Issuer symbol
CNR
Transactions as of
19 Mar 2026
Net transactions value
-$1,603,100
Form type
4
Filing time
20 Mar 2026, 10:27:21 UTC
Previous filing
23 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Klein Rosemary L SVP, CLO & Corp. Sec. 275 TECHNOLOGY DRIVE, SUITE 101, CANONSBURG /s/ Rosemary L. Klein 20 Mar 2026 0001310202

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CNR Common stock, par value $0.01 per share Sale $1,050,000 -10,000 -15% $105.00 58,679 19 Mar 2026 Direct
transaction CNR Common stock, par value $0.01 per share Sale $553,100 -5,000 -8.5% $110.62 53,679 19 Mar 2026 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Of the 53,679 shares, 11,045 shares represent unvested restricted stock units.