List of insiders holdings for MAMMOTH ENERGY SERVICES INC.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | WEXFORD CAPITAL LP Wexford Catalyst Trading LTD Wexford Spectrum Trading LTD MEH SUB LLC Wexford GP LLC DAVIDSON CHARLES E JACOBS JOSEPH Director 10% Owner | 2024-02-09 16:13:28 | 22,566,238 0 | 22,566,238 | Form 13G |
| 2 | Mammoth Energy Holdings LLC WEXFORD CAPITAL LP Wexford GP LLC DAVIDSON CHARLES E JACOBS JOSEPH Director 10% Owner | 2024-02-09 16:13:28 | 22,566,238 0 | 22,566,238 | Form 13G |
| 3 | WEXFORD CAPITAL LP Wexford GP LLC DAVIDSON CHARLES E JACOBS JOSEPH Director 10% Owner | 2024-03-14 16:22:18 | 340,797 22,225,441 | 22,566,238 | Form 4 |
| 4 | GULFPORT ENERGY CORP Director 10% Owner | 2018-08-01 19:27:43 | 9,829,548 0 | 9,829,548 | Form 4 |
| 5 | GPOR Distribution Trust 10% Owner | 2021-07-12 16:04:11 | 9,829,548 0 | 9,829,548 | Form 3 |
| 6 | Straehla Arty Chief Executive Officer | 2023-12-19 18:37:35 | 1,012,107 1,792 | 1,013,899 | Form 4 |
| 7 | Layton Mark E. CFO and Secretary | 2023-03-07 16:01:41 | 418,985 0 | 418,985 | Form 4 |
| 8 | Palm James D Director | 2024-06-14 16:25:21 | 240,144 0 | 240,144 | Form 4 |
| 9 | SMITH ARTHUR L Director | 2025-05-27 17:29:24 | 130,034 0 | 130,034 | Form 4 |
| 10 | Booker Corey J. Director | 2024-11-26 18:04:41 | 125,488 0 | 125,488 | Form 4 |
| 11 | Amron Arthur H Director | 2024-12-16 17:02:10 | 47,135 0 | 47,135 | Form 4 |
| 12 | YELLEN JONATHAN H Director | 2019-11-20 16:17:15 | 36,674 0 | 36,674 | Form 4 |
| 13 | Jacobi Paul M. Director | 2024-06-14 16:21:48 | 27,856 0 | 27,856 | Form 4 |
| 14 | LaForge Rusty Neal VP, Gen. Couns., Asst. Sec. | 2018-08-09 15:12:21 | 20,000 0 | 20,000 | Form 3 |
| 15 | Ross Matthew Director | 2019-11-22 16:07:20 | 19,815 0 | 19,815 | Form 4 |
| 16 | Heerwagen Paul K IV Director | 2019-06-07 16:12:56 | 10,493 0 | 10,493 | Form 4 |
| 17 | McCarthy Marc T Director | 2019-06-07 16:33:53 | 10,493 0 | 10,493 | Form 4 |
| 18 | Gaydosik Aaron Director | 2016-10-21 20:45:44 | 6,667 0 | 6,667 | Form 4 |
| 19 | Weiss Andre Director | 2016-10-21 18:55:01 | 6,667 0 | 6,667 | Form 4 |