Sign inGet started

TUSK

MAMMOTH ENERGY SERVICES, INC.CIK 1679268 ☆ Sign in to watchCongress trades
Open-mkt buys · 90d
$30.0K
2 trades · 1 insiders
Open-mkt sales · 90d
—
0 trades · 0 insiders
Net · 90d
$30.0K
Insiders on file
23

AI insights for TUSK PRO

XXXX$█.██M██+██%
XXXX$█.██M██+██%
XXXX$█.██M██+██%
XXXX$█.██M██+██%
XXXX$█.██M██+██%
AI insights for TUSK
Insider sentiment score with a plain-English explanation, conviction score on every buy, and how the stock performed 30 and 90 days after past insider buys.
Upgrade to Pro · $99/yearAlready Pro? Log in

Daily buy vs sell · 90 days

$30.0K2026-09-16 buys $30.0K 2026-09-16 sales —09-16
■ Open-market buys (P)   ■ Open-market sales (S) · daily dollar value by transaction date

Insiders

InsiderRoleTradesBoughtSoldLast trade
Plaumann Mark LawrenceDirector2$30.0K$02026-09-16
Lancaster PhillipDirector1$0$02026-06-26
CD Holding Company, LLC10% Owner2$0$02026-06-17
Amron Holdings LLCDirector2$0$02026-06-17
Jacobi Paul M.Director6$0$02026-06-17
Wexford GP LLCDirector, 10% Owner8$10.69M$2.42M2026-06-17
Amron Arthur HDirector16$83.6K$02026-06-12
SMITH ARTHUR LDirector17$177.3K$503.6K2025-05-22
Booker Corey J.Director14$0$176.3K2024-11-25
Palm James DDirector10$76.5K$02024-06-12
DAVIDSON CHARLES EDirector, 10% Owner1$0$02024-03-12
Straehla ArtyChief Executive Officer19$30.0K$3.15M2023-12-19
Layton Mark E.CFO and Secretary11$45.0K$536.3K2023-03-03
WEXFORD CAPITAL LPDirector, 10% Owner5$145.9K$115.19M2022-06-17
JACOBS JOSEPHDirector, 10% Owner3$117.3K$02022-06-15
Ross MatthewDirector5$0$4.2K2019-11-21
Wexford Spectrum Trading LTDDirector, 10% Owner1$22.2K$02019-11-20
YELLEN JONATHAN HDirector1$0$02019-11-18
Heerwagen Paul K IVDirector4$0$02019-06-05
McCarthy Marc TDirector4$0$02019-06-05
GULFPORT ENERGY CORPDirector, 10% Owner3$0$52.56M2018-07-30
Weiss AndreDirector1$0$02016-10-19
Gaydosik AaronDirector1$0$02016-10-19

Trade history

InsiderRoleCodeTradeFiledSharesPriceValueOwned after
Plaumann Mark LawrenceDirector P Buy2026-09-162026-09-175,000$3.00 $15.0K5,000SEC↗
Plaumann Mark LawrenceDirector P Buy2026-09-162026-09-175,000$3.00 $15.0K5,000SEC↗
Lancaster PhillipDirector J Other2026-06-262026-07-0168,152— $0159,445SEC↗
CD Holding Company, LLC10% Owner J Other2026-06-172026-06-222,403,831— $02,403,831SEC↗
CD Holding Company, LLC10% Owner J Other2026-06-172026-06-224,066,610— $04,066,610SEC↗
Wexford GP LLCChief Business Officer J Other2026-06-172026-06-221,072,896— $01,451,034SEC↗
Wexford GP LLCChief Business Officer P Buy2026-06-172026-06-224,019,574$2.60 $10.45M10,620,789SEC↗
Wexford GP LLCChief Business Officer J Other2026-06-172026-06-226,354,667— $06,601,215SEC↗
Amron Holdings LLCDirector J Other2026-06-172026-06-2219,121— $086,256SEC↗
Amron Holdings LLCDirector J Other2026-06-172026-06-2210,329— $010,329SEC↗
Jacobi Paul M.Chief Business Officer J Other2026-06-172026-06-223,211— $031,067SEC↗
Amron Arthur HDirector P Buy2026-06-122026-06-152,000$3.28 $6.6K67,135SEC↗
Amron Arthur HDirector P Buy2026-06-112026-06-152,500$3.22 $8.1K65,135SEC↗
Amron Arthur HDirector P Buy2026-05-282026-05-283,000$3.25 $9.8K62,635SEC↗
Amron Arthur HDirector P Buy2026-05-262026-05-282,500$3.24 $8.1K59,635SEC↗
Amron Arthur HDirector P Buy2025-12-112025-12-1510,000$1.89 $18.9K57,135SEC↗
SMITH ARTHUR LDirector S Sale2025-05-222025-05-2720,000$2.51 $50.2K130,034SEC↗
SMITH ARTHUR LDirector S Sale2025-05-202025-05-2150,000$2.51 $125.5K150,034SEC↗
SMITH ARTHUR LDirector S Sale2025-05-192025-05-2115,000$2.49 $37.4K200,034SEC↗
Amron Arthur HDirector P Buy2024-12-122024-12-161,000$2.97 $3.0K47,135SEC↗
Booker Corey J.Director S Sale2024-11-252024-11-2615,000$3.47 $52.0K125,488SEC↗
Booker Corey J.Director S Sale2024-11-222024-11-2610,000$3.43 $34.3K140,488SEC↗
Booker Corey J.Director S Sale2024-11-212024-11-226,709$3.25 $21.8K150,488SEC↗
Booker Corey J.Director S Sale2024-11-202024-11-225,000$3.21 $16.1K157,197SEC↗
Booker Corey J.Director S Sale2024-11-142024-11-153,607$3.50 $12.6K162,197SEC↗
Booker Corey J.Director S Sale2024-11-132024-11-157,100$3.68 $26.1K165,804SEC↗
Booker Corey J.Director S Sale2024-11-112024-11-123,494$3.61 $12.6K172,904SEC↗
Booker Corey J.Director S Sale2024-11-082024-11-1224$3.76 $90176,398SEC↗
Booker Corey J.Director S Sale2024-11-072024-11-12165$3.90 $644176,422SEC↗
Amron Arthur HDirector A Award2024-06-122024-06-1427,856— $046,135SEC↗
Jacobi Paul M.Director A Award2024-06-122024-06-1427,856— $027,856SEC↗
SMITH ARTHUR LDirector A Award2024-06-122024-06-1427,856— $0215,034SEC↗
Palm James DDirector A Award2024-06-122024-06-1427,856— $0240,144SEC↗
Booker Corey J.Director A Award2024-06-122024-06-1427,856— $0176,587SEC↗
Amron Arthur HDirector P Buy2024-05-302024-05-303,000$3.65 $10.9K18,279SEC↗
Amron Arthur HDirector P Buy2024-05-282024-05-302,000$3.57 $7.1K15,279SEC↗
Amron Arthur HDirector P Buy2024-03-122024-03-143,000$3.72 $11.2K13,279SEC↗
DAVIDSON CHARLES EDirector, 10% Owner J Other2024-03-122024-03-14535,366— $021,690,075SEC↗
Straehla ArtyChief Executive Officer S Sale2023-12-192023-12-1940,000$4.35 $174.0K1,012,107SEC↗
Straehla ArtyChief Executive Officer S Sale2023-12-182023-12-1930,000$4.38 $131.4K1,052,107SEC↗
Straehla ArtyChief Executive Officer S Sale2023-12-152023-12-1540,000$4.36 $174.4K1,082,107SEC↗
Straehla ArtyChief Executive Officer S Sale2023-12-142023-12-1555,000$4.44 $244.2K1,122,107SEC↗
Straehla ArtyChief Executive Officer S Sale2023-12-132023-12-1525,000$4.39 $109.7K1,177,107SEC↗
SMITH ARTHUR LDirector A Award2023-06-072023-06-0823,810— $0187,178SEC↗
Palm James DDirector A Award2023-06-072023-06-0823,810— $0212,288SEC↗
Booker Corey J.Director A Award2023-06-072023-06-0823,810— $0148,731SEC↗
Jacobi Paul M.Director A Award2023-06-072023-06-0823,810— $023,810SEC↗
Amron Arthur HDirector A Award2023-06-072023-06-0823,810— $023,810SEC↗
Layton Mark E.CFO and Secretary F Tax w/h2023-03-032023-03-0736,375$5.55 $201.9K418,985SEC↗
Straehla ArtyChief Executive Officer F Tax w/h2023-03-032023-03-07129,220$5.55 $717.2K1,202,107SEC↗
SMITH ARTHUR LDirector S Sale2022-11-112022-11-1420,000$7.07 $141.4K163,368SEC↗
Amron Arthur HDirector A Award2022-06-292022-06-3045,662— $045,662SEC↗
Booker Corey J.Director A Award2022-06-292022-06-3045,662— $0124,921SEC↗
Jacobi Paul M.Director A Award2022-06-292022-06-3045,662— $045,662SEC↗
Palm James DDirector A Award2022-06-292022-06-3045,662— $0188,478SEC↗
SMITH ARTHUR LDirector A Award2022-06-292022-06-3045,662— $0183,368SEC↗
WEXFORD CAPITAL LPDirector, 10% Owner P Buy2022-06-172022-06-2110,382$2.17 $22.5K22,434,125SEC↗
WEXFORD CAPITAL LPDirector, 10% Owner P Buy2022-06-162022-06-2135,000$2.13 $74.5K22,423,743SEC↗
JACOBS JOSEPHDirector, 10% Owner P Buy2022-06-152022-06-155,100$2.23 $11.4K22,388,743SEC↗
JACOBS JOSEPHDirector, 10% Owner P Buy2022-06-142022-06-1520,600$2.28 $47.0K22,383,643SEC↗
JACOBS JOSEPHDirector, 10% Owner P Buy2022-06-132022-06-1525,102$2.35 $59.0K22,363,043SEC↗
Wexford GP LLCDirector, 10% Owner P Buy2022-06-102022-06-1054,779$2.46 $134.8K22,337,941SEC↗
Wexford GP LLCDirector, 10% Owner P Buy2022-06-092022-06-1027,489$2.48 $68.2K22,283,162SEC↗
Wexford GP LLCDirector, 10% Owner P Buy2022-06-082022-06-1015,500$2.50 $38.8K22,255,673SEC↗
Layton Mark E.CFO and Secretary S Sale2022-03-102022-03-1140,417$2.04 $82.5K455,360SEC↗
SMITH ARTHUR LDirector P Buy2021-12-132021-12-1425,000$2.00 $50.0K180,326SEC↗
AMRON ARTHUR HDirector A Award2021-06-022021-06-0425,641— $025,641SEC↗
Palm James DDirector A Award2021-06-022021-06-0425,641— $0142,816SEC↗
Jacobi Paul M.Director A Award2021-06-022021-06-0425,641— $025,641SEC↗
Booker Corey J.Director A Award2021-06-022021-06-0425,641— $079,259SEC↗
SMITH ARTHUR LDirector A Award2021-06-022021-06-0425,641— $0155,326SEC↗
Layton Mark E.CFO and Secretary S Sale2021-03-112021-03-1155,789$5.22 $291.2K495,777SEC↗
Straehla ArtyChief Executive Officer S Sale2021-03-102021-03-11102,435$5.29 $541.9K1,331,327SEC↗
Straehla ArtyChief Executive Officer S Sale2021-03-092021-03-1146,555$5.47 $254.7K1,433,762SEC↗
Straehla ArtyChief Executive Officer S Sale2020-11-102020-11-135,000$1.78 $8.9K1,480,317SEC↗
SMITH ARTHUR LDirector P Buy2020-09-042020-09-0820,000$1.29 $25.8K129,685SEC↗
Booker Corey J.Director A Award2020-08-172020-08-1953,618— $053,618SEC↗
Palm James DDirector A Award2020-07-022020-07-0786,957— $0117,175SEC↗
SMITH ARTHUR LDirector A Award2020-07-022020-07-0786,957— $0109,685SEC↗
AMRON ARTHUR HDirector A Award2020-07-022020-07-0786,957— $086,957SEC↗
Jacobi Paul M.Director A Award2020-07-022020-07-0786,957— $086,957SEC↗
Layton Mark E.CFO and Secretary A Award2020-03-032020-03-04500,000— $0551,566SEC↗
Straehla ArtyChief Executive Officer A Award2020-03-032020-03-041,300,000— $01,485,317SEC↗
Ross MatthewDirector S Sale2019-11-212019-11-222,913$1.44 $4.2K19,815SEC↗
Wexford Spectrum Trading LTDDirector, 10% Owner P Buy2019-11-202019-11-2216,692$1.33 $22.2K22,045,273SEC↗
YELLEN JONATHAN HDirector A Award2019-11-182019-11-2036,674— $036,674SEC↗
WEXFORD CAPITAL LPDirector, 10% Owner P Buy2019-11-132019-11-1535,904$1.36 $48.8K22,028,581SEC↗
Heerwagen Paul K IVDirector A Award2019-06-052019-06-0710,493— $010,493SEC↗
Ross MatthewDirector A Award2019-06-052019-06-0710,493— $022,728SEC↗
SMITH ARTHUR LDirector A Award2019-06-052019-06-0710,493— $022,728SEC↗
Palm James DDirector A Award2019-06-052019-06-0710,493— $030,218SEC↗
McCarthy Marc TDirector A Award2019-06-052019-06-0710,493— $010,493SEC↗
AMRON ARTHUR HDirector A Award2019-06-052019-06-0710,493— $010,493SEC↗
AMRON ARTHUR HDirector A Award2019-01-252019-01-291,549— $01,549SEC↗
SMITH ARTHUR LDirector S Sale2018-12-032018-12-066,000$24.85 $149.1K0SEC↗
Straehla ArtyChief Executive Officer S Sale2018-11-122018-11-132,230$26.20 $58.4K185,317SEC↗
Layton Mark E.CFO and Secretary S Sale2018-11-092018-11-13142$26.12 $3.7K51,566SEC↗
Layton Mark E.CFO and Secretary S Sale2018-11-082018-11-13994$27.27 $27.1K51,708SEC↗
Straehla ArtyChief Executive Officer S Sale2018-11-082018-11-1325,151$26.45 $665.2K199,007SEC↗
Straehla ArtyChief Executive Officer S Sale2018-11-082018-11-1311,460$27.29 $312.7K187,547SEC↗
WEXFORD CAPITAL LPDirector, 10% Owner S Sale2018-07-302018-08-01266,026$38.01 $10.11M21,978,893SEC↗
GULFPORT ENERGY CORPDirector, 10% Owner S Sale2018-07-302018-08-01118,974$38.01 $4.52M9,829,548SEC↗
WEXFORD CAPITAL LPDirector, 10% Owner S Sale2018-06-292018-07-032,764,400$38.01 $105.07M22,244,919SEC↗
GULFPORT ENERGY CORPDirector, 10% Owner S Sale2018-06-292018-07-031,235,600$38.01 $46.97M9,948,522SEC↗
McCarthy Marc TDirector A Award2018-06-072018-06-112,655— $02,655SEC↗
SMITH ARTHUR LDirector A Award2018-06-072018-06-112,655— $012,235SEC↗
Ross MatthewDirector A Award2018-06-072018-06-112,655— $012,235SEC↗
Palm James DDirector A Award2018-06-072018-06-112,655— $019,725SEC↗
Heerwagen Paul K IVDirector A Award2018-06-072018-06-112,655— $02,655SEC↗
Layton Mark E.CFO and Secretary S Sale2018-03-012018-03-074,373$26.13 $114.3K52,702SEC↗
McCarthy Marc TDirector A Award2018-02-022018-02-062,913— $02,913SEC↗
Palm James DDirector A Award2018-02-022018-02-064,370— $017,070SEC↗
SMITH ARTHUR LDirector A Award2018-02-022018-02-062,913— $09,580SEC↗
Ross MatthewDirector A Award2018-02-022018-02-062,913— $09,580SEC↗
Heerwagen Paul K IVDirector A Award2018-02-022018-02-062,913— $02,913SEC↗
Straehla ArtyChief Executive Officer S Sale2017-11-152017-11-167,553$17.81 $134.5K224,158SEC↗
Straehla ArtyChief Executive Officer S Sale2017-11-142017-11-1618,289$18.71 $342.2K231,711SEC↗
Layton Mark E.CFO and Secretary S Sale2017-11-142017-11-16925$19.01 $17.6K57,075SEC↗
Palm James DDirector P Buy2017-08-252017-08-282,000$12.60 $25.2K12,700SEC↗
Palm James DDirector P Buy2017-08-242017-08-284,000$12.83 $51.3K10,700SEC↗
SMITH ARTHUR LDirector P Buy2017-06-092017-06-136,000$16.91 $101.5K6,000SEC↗
Wexford GP LLC10% Owner A Award2017-06-082017-06-224,565,416— $025,009,319SEC↗
Straehla ArtyChief Executive Officer P Buy2017-02-282017-03-02460$21.76 $10.0K460SEC↗
Layton Mark E.CFO and Secretary A Award2017-02-212017-02-2340,000— $058,000SEC↗
Ross MatthewDirector A Award2016-11-072016-11-096,667— $06,667SEC↗
Wexford GP LLCDirector, 10% Owner S Sale2016-10-192016-10-21171,797$14.06 $2.42M20,445,923SEC↗
McCarthy Marc TDirector A Award2016-10-192016-10-216,667— $06,667SEC↗
Weiss AndreDirector A Award2016-10-192016-10-216,667— $06,667SEC↗
Straehla ArtyChief Executive Officer P Buy2016-10-192016-10-21666$15.00 $10.0K1,332SEC↗
Straehla ArtyChief Executive Officer A Award2016-10-192016-10-21250,000— $0251,332SEC↗
Straehla ArtyChief Executive Officer P Buy2016-10-192016-10-21666$15.00 $10.0K666SEC↗
SMITH ARTHUR LDirector A Award2016-10-192016-10-216,667— $06,667SEC↗
Layton Mark E.CFO and Secretary A Award2016-10-192016-10-2115,000— $018,000SEC↗
Layton Mark E.CFO and Secretary P Buy2016-10-192016-10-213,000$15.00 $45.0K3,000SEC↗
GULFPORT ENERGY CORPDirector, 10% Owner S Sale2016-10-192016-10-2176,250$14.06 $1.07M9,080,417SEC↗
Gaydosik AaronDirector A Award2016-10-192016-10-216,667— $06,667SEC↗
Heerwagen Paul K IVDirector A Award2016-01-092017-01-104,444— $04,444SEC↗