MAMMOTH ENERGY SERVICES, INC. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Amron Arthur H | — | Purchase | 10,000 | $1.89 | $18,900 | 57,135 | Dec 11, 2025 |
| SMITH ARTHUR L | — | Sale | 20,000 | $2.51 | $50,200 | 130,034 | May 22, 2025 |
| SMITH ARTHUR L | — | Sale | 50,000 | $2.51 | $125,500 | 150,034 | May 19, 2025 |
| Amron Arthur H | — | Purchase | 1,000 | $2.97 | $2,970 | 47,135 | Dec 12, 2024 |
| Booker Corey J. | — | Sale | 10,000 | $3.43 | $34,300 | 140,488 | Nov 25, 2024 |
| Booker Corey J. | — | Sale | 6,709 | $3.25 | $21,804 | 150,488 | Nov 20, 2024 |
| Booker Corey J. | — | Sale | 3,607 | $3.50 | $12,625 | 162,197 | Nov 13, 2024 |
| Booker Corey J. | — | Sale | 24 | $3.76 | $90 | 176,398 | Nov 7, 2024 |
| Booker Corey J. | — | Award / Grant | 27,856 | — | — | 176,587 | Jun 12, 2024 |
| Palm James D | — | Award / Grant | 27,856 | — | — | 240,144 | Jun 12, 2024 |
| SMITH ARTHUR L | — | Award / Grant | 27,856 | — | — | 215,034 | Jun 12, 2024 |
| Jacobi Paul M. | — | Award / Grant | 27,856 | — | — | 27,856 | Jun 12, 2024 |
| Amron Arthur H | — | Award / Grant | 27,856 | — | — | 46,135 | Jun 12, 2024 |
| Amron Arthur H | — | Purchase | 3,000 | $3.65 | $10,950 | 18,279 | May 28, 2024 |
| DAVIDSON CHARLES E | — | Other | 535,366 | — | — | 21,690,075 | Mar 12, 2024 |
| Amron Arthur H | — | Purchase | 3,000 | $3.72 | $11,160 | 13,279 | Mar 12, 2024 |
| Straehla Arty | Chief Executive Officer | Sale | 30,000 | $4.38 | $131,400 | 1,052,107 | Dec 19, 2023 |
| Straehla Arty | Chief Executive Officer | Sale | 40,000 | $4.36 | $174,400 | 1,082,107 | Dec 14, 2023 |
| Amron Arthur H | — | Award / Grant | 23,810 | — | — | 23,810 | Jun 7, 2023 |
| Jacobi Paul M. | — | Award / Grant | 23,810 | — | — | 23,810 | Jun 7, 2023 |
| Booker Corey J. | — | Award / Grant | 23,810 | — | — | 148,731 | Jun 7, 2023 |
| Palm James D | — | Award / Grant | 23,810 | — | — | 212,288 | Jun 7, 2023 |
| SMITH ARTHUR L | — | Award / Grant | 23,810 | — | — | 187,178 | Jun 7, 2023 |
| Straehla Arty | Chief Executive Officer | Tax Withholding | 129,220 | $5.55 | $717,171 | 1,202,107 | Mar 3, 2023 |
| Layton Mark E. | CFO and Secretary | Tax Withholding | 36,375 | $5.55 | $201,881 | 418,985 | Mar 3, 2023 |
| SMITH ARTHUR L | — | Sale | 20,000 | $7.07 | $141,400 | 163,368 | Nov 11, 2022 |
| SMITH ARTHUR L | — | Award / Grant | 45,662 | — | — | 183,368 | Jun 29, 2022 |
| Palm James D | — | Award / Grant | 45,662 | — | — | 188,478 | Jun 29, 2022 |
| Jacobi Paul M. | — | Award / Grant | 45,662 | — | — | 45,662 | Jun 29, 2022 |
| Booker Corey J. | — | Award / Grant | 45,662 | — | — | 124,921 | Jun 29, 2022 |
| Amron Arthur H | — | Award / Grant | 45,662 | — | — | 45,662 | Jun 29, 2022 |
| WEXFORD CAPITAL LP | — | Purchase | 35,000 | $2.13 | $74,550 | 22,423,743 | Jun 17, 2022 |
| JACOBS JOSEPH | — | Purchase | 5,100 | $2.23 | $11,373 | 22,388,743 | Jun 13, 2022 |
| Wexford GP LLC | — | Purchase | 15,500 | $2.50 | $38,750 | 22,255,673 | Jun 10, 2022 |
| Layton Mark E. | CFO and Secretary | Sale | 40,417 | $2.04 | $82,451 | 455,360 | Mar 10, 2022 |
| SMITH ARTHUR L | — | Purchase | 25,000 | $2.00 | $50,000 | 180,326 | Dec 13, 2021 |
| SMITH ARTHUR L | — | Gift | 29,834 | — | — | 137,706 | Aug 12, 2021 |
| SMITH ARTHUR L | — | Award / Grant | 25,641 | — | — | 155,326 | Jun 2, 2021 |
| Booker Corey J. | — | Award / Grant | 25,641 | — | — | 79,259 | Jun 2, 2021 |
| Jacobi Paul M. | — | Award / Grant | 25,641 | — | — | 25,641 | Jun 2, 2021 |
| Palm James D | — | Award / Grant | 25,641 | — | — | 142,816 | Jun 2, 2021 |
| AMRON ARTHUR H | — | Award / Grant | 25,641 | — | — | 25,641 | Jun 2, 2021 |
| Layton Mark E. | CFO and Secretary | Sale | 55,789 | $5.22 | $291,219 | 495,777 | Mar 11, 2021 |
| Straehla Arty | Chief Executive Officer | Sale | 102,435 | $5.29 | $541,881 | 1,331,327 | Mar 9, 2021 |
| Straehla Arty | Chief Executive Officer | Sale | 5,000 | $1.78 | $8,900 | 1,480,317 | Nov 10, 2020 |
| SMITH ARTHUR L | — | Purchase | 20,000 | $1.29 | $25,800 | 129,685 | Sep 4, 2020 |
| Booker Corey J. | — | Award / Grant | 53,618 | — | — | 53,618 | Aug 17, 2020 |
| Jacobi Paul M. | — | Award / Grant | 86,957 | — | — | 86,957 | Jul 2, 2020 |
| AMRON ARTHUR H | — | Award / Grant | 86,957 | — | — | 86,957 | Jul 2, 2020 |
| SMITH ARTHUR L | — | Award / Grant | 86,957 | — | — | 109,685 | Jul 2, 2020 |