MAMMOTH ENERGY SERVICES INC. (TUSK) - Insider Holders & Insider Ownership

List of insiders holdings for MAMMOTH ENERGY SERVICES INC.:
  1. Shares directly owned by the insider.
  2. Shares indirectly owned by the insider.
  3. Total shares owned by the insider (sum of shares directly and indirectly owned).
  4. Total market value if available.
  5. 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
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#Insider Holder NameReport
Date Time		Shares Owned
Directly
Indirectly		Total
Shares Owned		Filing
1GULFPORT ENERGY CORP
Director
10% Owner		2018-08-01 19:27:439,829,548
0		9,829,548Form 4
2GPOR Distribution Trust
10% Owner		2021-07-12 16:04:119,829,548
0		9,829,548Form 3
3Mammoth Energy Holdings LLC
WEXFORD CAPITAL LP
Wexford GP LLC
DAVIDSON CHARLES E
JACOBS JOSEPH
Director
10% Owner		2026-06-22 17:03:466,470,441
0		6,470,441Form 13G
4WEXFORD CAPITAL LP
Wexford GP LLC
DAVIDSON CHARLES E
JACOBS JOSEPH
Chief Business Officer
10% Owner		2026-06-22 17:03:466,470,441
0		6,470,441Form 13G
5DAVIDSON CHARLES E
CD Holding Company LLC
10% Owner		2026-06-22 17:03:466,470,441
0		6,470,441Form 13G
6WEXFORD CAPITAL LP
Wexford Catalyst Trading LTD
Wexford Spectrum Trading LTD
MEH SUB LLC
Wexford GP LLC
DAVIDSON CHARLES E
JACOBS JOSEPH
Director
10% Owner		2026-06-22 17:03:466,470,441
0		6,470,441Form 13G
7Straehla Arty
Chief Executive Officer		2023-12-19 18:37:351,012,107
1,792		1,013,899Form 4
8Layton Mark E.
CFO and Secretary		2023-03-07 16:01:41418,985
0		418,985Form 4
9Palm James D
Director		2024-06-14 16:25:21240,144
0		240,144Form 4
10Lancaster Phillip
Director		2026-07-01 16:56:47227,597
0		227,597Form 4
11SMITH ARTHUR L
Director		2025-05-27 17:29:24130,034
0		130,034Form 4
12Amron Arthur H
Amron Holdings LLC
Director		2026-06-22 16:32:31105,377
20,658		126,035Form 4
13Booker Corey J.
Director		2024-11-26 18:04:41125,488
0		125,488Form 4
14YELLEN JONATHAN H
Director		2019-11-20 16:17:1536,674
0		36,674Form 4
15Jacobi Paul M.
Chief Business Officer		2026-06-22 16:42:3234,278
0		34,278Form 4
16LaForge Rusty Neal
VP, Gen. Couns., Asst. Sec.		2018-08-09 15:12:2120,000
0		20,000Form 3
17Ross Matthew
Director		2019-11-22 16:07:2019,815
0		19,815Form 4
18Heerwagen Paul K IV
Director		2019-06-07 16:12:5610,493
0		10,493Form 4
19McCarthy Marc T
Director		2019-06-07 16:33:5310,493
0		10,493Form 4
20Weiss Andre
Director		2016-10-21 18:55:016,667
0		6,667Form 4
21Gaydosik Aaron
Director		2016-10-21 20:45:446,667
0		6,667Form 4
22Plaumann Mark Lawrence
Director		2026-09-17 16:50:185,000
0		5,000Form 4