James A. Brock - 18 Mar 2026 Form 4 Insider Report for Core Natural Resources, Inc. (CNR)

Role
Executive Chair and CEO, Director
Signature
/s/ Rosemary L. Klein, Attorney-in-Fact for James A. Brock
Issuer symbol
CNR
Transactions as of
18 Mar 2026
Net transactions value
-$4,122,874
Form type
4
Filing time
19 Mar 2026, 17:42:17 UTC
Previous filing
23 Feb 2026
Next filing
25 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Brock James A Executive Chair and CEO, Director 275 TECHNOLOGY DRIVE, SUITE 101, CANONSBURG /s/ Rosemary L. Klein, Attorney-in-Fact for James A. Brock 19 Mar 2026 0001620612

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 $4,122,874 -40,760 -29% $101.15 100,000 18 Mar 2026 By SLAT-1 F1, F2
holding CNR Common stock, par value $0.01 per share 24,440 18 Mar 2026 Lee Ann Brock Trust
holding CNR Common stock, par value $0.01 per share 117,398 18 Mar 2026 By GRAT-1
holding CNR Common stock, par value $0.01 per share 266,975 18 Mar 2026 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This sale was made in connection with a long-term strategy for estate planning purposes.
F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.62 to $101.57, inclusive. The reporting person undertakes to provide to Core Natural Resources, Inc., any security holder of Core Natural Resources, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.
F3 Of the 266,975 shares reported, 44,640 shares are unvested restricted stock units.