DeWalch D Mark (CIK 1638259) reported 10 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-07-02). Recent activity: Buy BSM (1,342 shares), Buy BSM (36,363 shares), Buy BSM (36,363 shares), Buy BSM (1,240 shares), Buy BSM (14,255 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-02 | Black Stone Minerals, L.P. (BSM) | Director | Buy | 1,342 | $18,748 |
| 2026-06-02 | Black Stone Minerals, L.P. (BSM) | Director | Buy | 36,363 | $490,028 |
| 2026-06-02 | Black Stone Minerals, L.P. (BSM) | Director | Buy | 36,363 | $495,326 |
| 2026-04-06 | Black Stone Minerals, L.P. (BSM) | Director | Buy | 1,240 | $18,749 |
| 2026-01-15 | Black Stone Minerals, L.P. (BSM) | Director | Buy | 14,255 | $0 |
| 2026-01-06 | Black Stone Minerals, L.P. (BSM) | Director | Buy | 1,410 | $18,739 |
| 2025-10-07 | Black Stone Minerals, L.P. (BSM) | Director | Buy | 1,426 | $18,738 |
| 2025-07-03 | Black Stone Minerals, L.P. (BSM) | Director | Buy | 1,433 | $18,744 |
| 2025-04-07 | Black Stone Minerals, L.P. (BSM) | Director | Buy | 1,227 | $18,736 |
| 2025-01-15 | Black Stone Minerals, L.P. (BSM) | Director | Buy | 13,324 | $0 |
Source: SEC Form 4 filings · as of 2026-07-02