Mammoth Energy Services, Inc. (TUSK) Insider Ownership

Historic Insider Ownership Trends

TUSK's three largest insider shareholders as of April 22, 2026 are Capital Lp Wexford (Director, 21.69Mn shares), Capital Lp Wexford (Director, 21.69Mn shares), Arty Straehla (Chief Executive Officer, 1.01Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Capital Lp Wexford - 0 21,690,075 14 Mar, 2024
Capital Lp Wexford - 0 21,690,075 14 Mar, 2024
Arty Straehla Chief Executive Officer 1,012,107 0 19 Dec, 2023
Mark E. Layton Cfo And Secretary 418,985 0 07 Mar, 2023
James D Palm - 240,144 0 14 Jun, 2024
Arthur L Smith - 130,034 0 27 May, 2025
Corey J. Booker - 125,488 0 26 Nov, 2024
Arthur H Amron - 57,135 0 15 Dec, 2025
Paul M. Jacobi - 27,856 0 14 Jun, 2024

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
11 Dec, 2025 Arthur H Amron Common Stock A 10,000 $1.89 57,135 D P
22 May, 2025 Arthur L Smith Common Stock D 20,000 $2.51 130,034 D S
19 May, 2025 Arthur L Smith Common Stock D 15,000 $2.49 200,034 D S
20 May, 2025 Arthur L Smith Common Stock D 50,000 $2.51 150,034 D S
12 Dec, 2024 Arthur H Amron Common Stock A 1,000 $2.97 47,135 D P
22 Nov, 2024 Corey J. Booker Common Stock D 10,000 $3.43 140,488 D S
25 Nov, 2024 Corey J. Booker Common Stock D 15,000 $3.47 125,488 D S
20 Nov, 2024 Corey J. Booker Common Stock D 5,000 $3.21 157,197 D S
21 Nov, 2024 Corey J. Booker Common Stock D 6,709 $3.25 150,488 D S
13 Nov, 2024 Corey J. Booker Common Stock D 7,100 $3.68 165,804 D S
14 Nov, 2024 Corey J. Booker Common Stock D 3,607 $3.50 162,197 D S
07 Nov, 2024 Corey J. Booker Common Stock D 165 $3.90 176,422 D S
08 Nov, 2024 Corey J. Booker Common Stock D 24 $3.76 176,398 D S
11 Nov, 2024 Corey J. Booker Common Stock D 3,494 $3.61 172,904 D S
12 Jun, 2024 James D Palm Common Stock A 27,856 $0.00 240,144 D A
12 Jun, 2024 Arthur L Smith Common Stock A 27,856 $0.00 215,034 D A
12 Jun, 2024 Corey J. Booker Common Stock A 27,856 $0.00 176,587 D A
12 Jun, 2024 Arthur H Amron Common Stock A 27,856 $0.00 46,135 D A
12 Jun, 2024 Paul M. Jacobi Common Stock A 27,856 $0.00 27,856 D A
28 May, 2024 Arthur H Amron Common Stock A 2,000 $3.57 15,279 D P