17 insiders reported 113 Form 4 transactions for Core Natural Resources, Inc. (CNR) over the past 18 months (most recent 2026-05-01). Recent activity: Keating Ronald C (Director) Buy 1,390 shares, Doheny Edward L II (Director) Buy 1,390 shares, Brock James A (Executive Chair and CEO) Sell 24,440 shares, Brock James A (Executive Chair and CEO) Buy 24,440 shares, Klein Rosemary L (SVP, CLO & Corp. Sec.) Sell 10,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-01 | Keating Ronald C | Director | Buy | 1,390 | $0 |
| 2026-05-01 | Doheny Edward L II | Director | Buy | 1,390 | $0 |
| 2026-03-25 | Brock James A | Executive Chair and CEO | Sell | 24,440 | $0 |
| 2026-03-25 | Brock James A | Executive Chair and CEO | Buy | 24,440 | $0 |
| 2026-03-20 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Sell | 10,000 | $1.1M |
| 2026-03-20 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Sell | 5,000 | $553,100 |
| 2026-03-19 | Brock James A | Executive Chair and CEO | Sell | 40,760 | $4.1M |
| 2026-03-19 | Rothka John | Chief Accounting Officer | Sell | 1,000 | $97,660 |
| 2026-03-11 | Rothka John | Chief Accounting Officer | Sell | 3,800 | $348,156 |
| 2026-03-11 | NAVARRE RICHARD A | Director | Sell | 6,000 | $550,200 |
| 2026-02-23 | Rothka John | Chief Accounting Officer | Sell | 79 | $7,028 |
| 2026-02-23 | Brock James A | Executive Chair and CEO | Sell | 2,960 | $263,322 |
| 2026-02-19 | KOEPPEL HOLLY K | Director | Buy | 1,610 | $0 |
| 2026-02-19 | Brock James A | Executive Chair and CEO | Sell | 66,365 | $5.9M |
| 2026-02-19 | Brock James A | Executive Chair and CEO | Sell | 4,440 | $394,982 |
| 2026-02-19 | Braithwaite Robert J. Jr. | SVP, Marketing & Sales | Buy | 4,440 | $0 |
| 2026-02-19 | Braithwaite Robert J. Jr. | SVP, Marketing & Sales | Sell | 310 | $27,578 |
| 2026-02-19 | Braithwaite Robert J. Jr. | SVP, Marketing & Sales | Sell | 464 | $41,277 |
| 2026-02-19 | Platt Joseph P JR | Director | Buy | 1,610 | $0 |
| 2026-02-19 | Perera Valli | Director | Buy | 1,610 | $0 |
| 2026-02-19 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Buy | 5,060 | $0 |
| 2026-02-19 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Sell | 497 | $44,213 |
| 2026-02-19 | Klein Rosemary L | SVP, CLO & Corp. Sec. | Sell | 746 | $66,364 |
| 2026-02-19 | NAVARRE RICHARD A | Director | Buy | 2,200 | $0 |
| 2026-02-19 | Brock James A | Executive Chair and CEO | Buy | 21,190 | $0 |
Source: SEC Form 4 filings · as of 2026-05-01