Plaumann Mark Lawrence (CIK 1290795) reported 6 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-09-17). Recent activity: Buy TUSK (5,000 shares), Sell FANG (1,000 shares), Sell FANG (500 shares), Buy FANG (982 shares), Buy FANG (2,965 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-17 | MAMMOTH ENERGY SERVICES, INC. (TUSK) | Director | Buy | 5,000 | $15,000 |
| 2026-08-24 | Diamondback Energy, Inc. (FANG) | Director | Sell | 1,000 | $210,577 |
| 2026-06-10 | Diamondback Energy, Inc. (FANG) | Director | Sell | 500 | $98,250 |
| 2026-05-21 | Diamondback Energy, Inc. (FANG) | Director | Buy | 982 | $0 |
| 2025-06-23 | Diamondback Energy, Inc. (FANG) | Director | Buy | 2,965 | $0 |
| 2025-05-22 | Diamondback Energy, Inc. (FANG) | Director | Buy | 1,417 | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-09-17