Mammoth Energy Services, Inc. (TUSK)
Mammoth Energy Services, Inc. (TUSK) Insider Trading
Directors, officers and holders of more than 10% of TUSK report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 28 most recent of 28 transactions on file: 8 with code P, 12 with code S and 8 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 16, 2026 | Plaumann Mark Lawrence | Director | P Purchase | 5,000 | $3.00 | $15,000 |
| Jun 26, 2026 | Lancaster Phillip | Director | J Other | 68,152 | Not measured | Not measured |
| Jun 17, 2026 | WEXFORD CAPITAL LP | Chief Business Officer | P Purchase | 4,019,574 | $2.60 | $10,468,177 |
| Jun 17, 2026 | Amron Arthur H | Director | J Other | 19,121 | Not measured | Not measured |
| Jun 17, 2026 | Amron Arthur H | Director | J Other | 10,329 | Not measured | Not measured |
| Jun 17, 2026 | WEXFORD CAPITAL LP | Chief Business Officer | J Other | 1,072,896 | Not measured | Not measured |
| Jun 17, 2026 | WEXFORD CAPITAL LP | Chief Business Officer | J Other | 6,354,667 | Not measured | Not measured |
| Jun 17, 2026 | DAVIDSON CHARLES E | 10% Owner | J Other | 2,403,831 | Not measured | Not measured |
| Jun 17, 2026 | DAVIDSON CHARLES E | 10% Owner | J Other | 4,066,610 | Not measured | Not measured |
| Jun 17, 2026 | Jacobi Paul M. | Chief Business Officer | J Other | 3,211 | Not measured | Not measured |
| Jun 12, 2026 | Amron Arthur H | Director | P Purchase | 2,000 | $3.28 | $6,560 |
| Jun 11, 2026 | Amron Arthur H | Director | P Purchase | 2,500 | $3.22 | $8,050 |
| May 28, 2026 | Amron Arthur H | Director | P Purchase | 3,000 | $3.25 | $9,750 |
| May 26, 2026 | Amron Arthur H | Director | P Purchase | 2,500 | $3.24 | $8,100 |
| Dec 11, 2025 | Amron Arthur H | Director | P Purchase | 10,000 | $1.89 | $18,900 |
| May 22, 2025 | SMITH ARTHUR L | Director | S Sale | 20,000 | $2.51 | $50,200 |
| May 20, 2025 | SMITH ARTHUR L | Director | S Sale | 50,000 | $2.51 | $125,500 |
| May 19, 2025 | SMITH ARTHUR L | Director | S Sale | 15,000 | $2.49 | $37,350 |
| Dec 12, 2024 | Amron Arthur H | Director | P Purchase | 1,000 | $2.97 | $2,971 |
| Nov 25, 2024 | Booker Corey J. | Director | S Sale | 15,000 | $3.47 | $52,050 |
| Nov 22, 2024 | Booker Corey J. | Director | S Sale | 10,000 | $3.43 | $34,300 |
| Nov 21, 2024 | Booker Corey J. | Director | S Sale | 6,709 | $3.25 | $21,804 |
| Nov 20, 2024 | Booker Corey J. | Director | S Sale | 5,000 | $3.21 | $16,050 |
| Nov 14, 2024 | Booker Corey J. | Director | S Sale | 3,607 | $3.50 | $12,625 |
| Nov 13, 2024 | Booker Corey J. | Director | S Sale | 7,100 | $3.68 | $26,100 |
| Nov 11, 2024 | Booker Corey J. | Director | S Sale | 3,494 | $3.61 | $12,613 |
| Nov 8, 2024 | Booker Corey J. | Director | S Sale | 24 | $3.76 | $90 |
| Nov 7, 2024 | Booker Corey J. | Director | S Sale | 165 | $3.90 | $644 |
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.