Mammoth Energy Services, Inc (TUSK) insider trading
Every open-market stock purchase and sale by Mammoth Energy Services, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Mark Lawrence Plaumann (Director) bought $15K in the last 90 days.
Last 12 months: insiders bought $10.5M (5 buys) and sold $0 (0 sales). Last close $2.72 on Oct 22, 2026.
Recent TUSK insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 16, 2026 | Mark Lawrence Plaumann (Director) | Bought | $15K |
| Jun 26, 2026 | Phillip Lancaster (Director) | Bought (not open market) | — |
| Jun 17, 2026 | Wexford Capital LP (C-suite exec) | Bought | $10.5M |
| Jun 17, 2026 | Charles E Davidson (10% owner) | Bought (not open market) | — |
| Jun 17, 2026 | Wexford Capital LP (C-suite exec) | Bought (not open market) | — |
| Jun 17, 2026 | Wexford Capital LP (C-suite exec) | Bought (not open market) | — |
| Jun 17, 2026 | Arthur H Amron (Director) | Bought (not open market) | — |
| Jun 17, 2026 | Paul M. Jacobi (C-suite exec) | Bought (not open market) | — |
| Jun 17, 2026 | Arthur H Amron (Director) | Bought (not open market) | — |
| Jun 17, 2026 | Charles E Davidson (10% owner) | Bought (not open market) | — |
| Jun 12, 2026 | Arthur H Amron (Director) | Bought | $6.6K |
| Jun 11, 2026 | Arthur H Amron (Director) | Bought | $8K |
| May 28, 2026 | Arthur H Amron (Director) | Bought | $9.8K |
| May 26, 2026 | Arthur H Amron (Director) | Bought | $8.1K |
| Dec 11, 2025 | Arthur H Amron (Director) | Bought | $18.9K |
Who's trading TUSK
- Mark Lawrence Plaumann, Director: bought $15K (1 buy), last Sep 16, 2026
- Phillip Lancaster, Director: other filings, last Jun 26, 2026
- Paul M. Jacobi, C-suite exec: other filings, last Jun 17, 2026
- Arthur H Amron, Director: bought $51.4K (5 buys), last Jun 17, 2026
- Charles E Davidson, 10% owner: other filings, last Jun 17, 2026
- Wexford Capital LP, C-suite exec: bought $10.5M (1 buy), last Jun 17, 2026
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