CIK 0001679268 · Accelerated filer<br>Smaller reporting company
MAMMOTH ENERGY SERVICES, INC.
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- TUSK
- Exchange
- Nasdaq
- Industry
- Oil & Gas Field Services, NEC
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 320498321
- Phone
- 405-608-6007
- Business address
- 14201 CALIBER DRIVE, SUITE 300, OKLAHOMA CITY, OK, 73134
- Open-market buys, last 90 days
- $15,000
- in 1 filing
- Open-market sales, last 90 days
- $0
- in 0 filings
Net +$15,000. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-09-16 | Plaumann Mark Lawrence Director | Purchase | +5,000 | $3.00 | $15K | 5,000 |
| 2026-06-26 | Lancaster Phillip Director | Other acquisition | +68,152 | 159,445 | ||
| 2026-06-17 | Jacobi Paul M. Chief Business Officer | Other acquisition | +3,211 | 31,067 | ||
| 2026-06-17 | Amron Arthur H Director | Other acquisition | +19,121 | 86,256 | ||
| 2026-06-17 | Amron Arthur H Director | Other acquisition | +10,329 | 10,329 | ||
| 2026-06-17 | WEXFORD CAPITAL LP Chief Business Officer | Other acquisition | +1,072,896 | 1,451,034 | ||
| 2026-06-17 | WEXFORD CAPITAL LP Chief Business Officer | Other acquisition | +6,354,667 | 6,601,215 | ||
| 2026-06-17 | WEXFORD CAPITAL LP Chief Business Officer | Purchase | +4,019,574 | $2.60 | $10.5M | 10,620,789 |
| 2026-06-17 | DAVIDSON CHARLES E 10% owner | Other acquisition | +2,403,831 | 2,403,831 | ||
| 2026-06-17 | DAVIDSON CHARLES E 10% owner | Other acquisition | +4,066,610 | 4,066,610 | ||
| 2026-06-12 | Amron Arthur H Director | Purchase | +2,000 | $3.28 | $7K | 67,135 |
| 2026-06-11 | Amron Arthur H Director | Purchase | +2,500 | $3.22 | $8K | 65,135 |
| 2026-05-28 | Amron Arthur H Director | Purchase | +3,000 | $3.25 | $10K | 62,635 |
| 2026-05-26 | Amron Arthur H Director | Purchase | +2,500 | $3.24 | $8K | 59,635 |
| 2025-12-11 | Amron Arthur H Director | Purchase | +10,000 | $1.89 | $19K | 57,135 |
| 2025-05-22 | SMITH ARTHUR L Director | Sale | −20,000 | $2.51 | $50K | 130,034 |
| 2025-05-20 | SMITH ARTHUR L Director | Sale | −50,000 | $2.51 | $126K | 150,034 |
| 2025-05-19 | SMITH ARTHUR L Director | Sale | −15,000 | $2.49 | $37K | 200,034 |
| 2024-12-12 | Amron Arthur H Director | Purchase | +1,000 | $2.97 | $3K | 47,135 |
| 2024-11-25 | Booker Corey J. Director | Sale | −15,000 | $3.47 | $52K | 125,488 |
Page 1 of 7 · 136 trades