MAMMOTH ENERGY SERVICES, INC. (TUSK) has 46 open-market insider trades by 13 insiders since 2016. Over the last six months insiders net bought $10.5M. The most active filer is Arty Straehla, CEO.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Wexford Capital L.P. | 10% Owner | — | 5 | $135.9M | 2026-06-17 |
| Gulfport Energy Corp. | Dir10% Owner | — | 3 | $57.1M | 2018-07-30 |
| Arty Straehla | CEO | — | 8 | $5.8M | 2023-12-19 |
| Wexford GP LLC | Dir10% Owner | — | 2 | $5.3M | 2022-06-10 |
| Mark E. Layton | CFOSecretary | — | 6 | $1.1M | 2023-03-03 |
| Arthur L. Smith | Dir | — | 7 | $857K | 2025-05-22 |
| Joseph Jacobs | Dir10% Owner | — | 1 | $176K | 2022-06-15 |
| Corey J. Booker | Dir | — | 4 | $176K | 2024-11-25 |
| Arthur H. Amron | Dir | — | 6 | $84K | 2026-06-12 |
| James D. Palm | Dir | — | 1 | $77K | 2024-06-12 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Mark Lawrence Plaumann | Director | Buy | $15K | 2026-09-16 |
| Wexford Capital L.P. | 10% Owner | Buy | $10.5M | 2026-06-17 |
| Arthur H. Amron | Director | Buy | $15K | 2026-06-11 |
| Arthur H. Amron | Director | Buy | $18K | 2026-05-26 |
| Arthur H. Amron | Director | Buy | $19K | 2025-12-11 |
| Arthur L. Smith | Director | Sell | $100K | 2025-05-22 |
Companies that share insiders with TUSK, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| Arthur L. Smith | Director | Sell | $288K | 2025-05-19 |
| Arthur H. Amron | Director | Buy | $3K | 2024-12-12 |
| Corey J. Booker | Director | Sell | $86K | 2024-11-22 |
| Corey J. Booker | Director | Sell | $38K | 2024-11-20 |
| Corey J. Booker | Director | Sell | $39K | 2024-11-13 |
| Corey J. Booker | Director | Sell | $13K | 2024-11-07 |
| Arthur H. Amron | Director | Buy | $18K | 2024-05-28 |
| Arthur H. Amron | Director | Buy | $11K | 2024-03-12 |
| Arty Straehla | CEO | Sell | $305K | 2023-12-18 |