Brock James A (CIK 1620612) reported 18 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-03-25). Recent activity: Sell CNR (24,440 shares), Buy CNR (24,440 shares), Sell CNR (40,760 shares), Sell CNR (2,960 shares), Buy CNR (21,190 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-25 | Core Natural Resources, Inc. (CNR) | Executive Chair and CEO | Sell | 24,440 | $0 |
| 2026-03-25 | Core Natural Resources, Inc. (CNR) | Executive Chair and CEO | Buy | 24,440 | $0 |
| 2026-03-19 | Core Natural Resources, Inc. (CNR) | Executive Chair and CEO | Sell | 40,760 | $4.1M |
| 2026-02-23 | Core Natural Resources, Inc. (CNR) | Executive Chair and CEO | Sell | 2,960 | $263,322 |
| 2026-02-19 | Core Natural Resources, Inc. (CNR) | Executive Chair and CEO | Buy | 21,190 | $0 |
| 2026-02-19 | Core Natural Resources, Inc. (CNR) | Executive Chair and CEO | Sell | 66,365 | $5.9M |
| 2026-02-19 | Core Natural Resources, Inc. (CNR) | Executive Chair and CEO | Sell | 4,440 | $394,982 |
| 2025-11-14 | Core Natural Resources, Inc. (CNR) | Executive Chair and CEO | Sell | 140,760 | $0 |
| 2025-11-14 | Core Natural Resources, Inc. (CNR) | Executive Chair and CEO | Buy | 140,760 | $0 |
| 2025-05-22 | Core Natural Resources, Inc. (CNR) | Executive Chair | Sell | 165,200 | $0 |
| 2025-05-22 | Core Natural Resources, Inc. (CNR) | Executive Chair | Buy | 165,200 | $0 |
| 2025-02-20 | Core Natural Resources, Inc. (CNR) | Executive Chair | Buy | 20,096 | $0 |
| 2025-02-20 | Core Natural Resources, Inc. (CNR) | Executive Chair | Buy | 20,096 | $0 |
| 2025-01-16 | Core Natural Resources, Inc. (CNR) | Executive Chair | Buy | 13,152 | $0 |
| 2025-01-16 | Core Natural Resources, Inc. (CNR) | Executive Chair | Sell | 6,031 | $614,860 |
| 2025-01-16 | Core Natural Resources, Inc. (CNR) | Executive Chair | Buy | 11,532 | $0 |
| 2025-01-16 | Core Natural Resources, Inc. (CNR) | Executive Chair | Sell | 5,288 | $539,112 |
| 2025-01-16 | Core Natural Resources, Inc. (CNR) | Executive Chair | Sell | 31,571 | $3.2M |
Source: SEC Form 4 filings · as of 2026-03-25