TUSK Insider Trading Activity and SEC Form 4 Filings
TUSK insider trading summary
Over the past 12 months, insiders at Mammoth Energy Services, Inc. (TUSK) reported 10 open-market purchases worth $41.9M by 6 insiders and no sales on SEC Form 4. Net insider buying was $41.9M.
Latest TUSK insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Sep 16, 2026 | Mark Lawrence Plaumann | Director | Buy | $15K (5,000 @ $3.00) |
| Jun 17, 2026 | Charles E Davidson | Chief Business Officer | Buy | $10.5M (4,019,574 @ $2.60) |
| Jun 17, 2026 | Wexford Capital LP | Chief Business Officer | Buy | $10.5M (4,019,574 @ $2.60) |
| Jun 17, 2026 | Joseph Jacobs | Chief Business Officer | Buy | $10.5M (4,019,574 @ $2.60) |
| Jun 17, 2026 | Wexford GP LLC | Chief Business Officer | Buy | $10.5M (4,019,574 @ $2.60) |
| Jun 12, 2026 | Arthur H Amron | Director | Buy | $7K (2,000 @ $3.28) |
| Jun 11, 2026 | Arthur H Amron | Director | Buy | $8K (2,500 @ $3.22) |
| May 28, 2026 | Arthur H Amron | Director | Buy | $10K (3,000 @ $3.25) |
| May 26, 2026 | Arthur H Amron | Director | Buy | $8K (2,500 @ $3.24) |
| Dec 11, 2025 | Arthur H Amron | Director | Buy | $19K (10,000 @ $1.89) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.