Mammoth Energy Services, Inc. (TUSK)
Nasdaq: TUSK · Oil & Gas Field Services, NEC · Oklahoma City, OK · filing with the SEC since 2016
Grade3.9
◀ Past 1.3● Present 4.0▶ Future 6.3
Who runs Mammoth Energy Services, Inc.
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedOfficers reporting now
5
of 9 people with a filing in the last fifteen months
Directors reporting now
4
26 people on the record since 2016
Officerssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Davidson Charles E | Chief Business Officer | Oct 2016 | Jun 22, 2026 | none |
| Jacobi Paul M. | Chief Business Officer | Jul 2020 | Jun 22, 2026 | none |
| Jacobs Joseph | Chief Business Officer | Oct 2016 | Jun 22, 2026 | none |
| Wexford Capital LP | Chief Business Officer | Oct 2016 | Jun 22, 2026 | none |
| Wexford Gp LLC | Chief Business Officer | Oct 2016 | Jun 22, 2026 | none |
Directorssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Plaumann Mark Lawrence | director | Sep 2026 | Sep 17, 2026 | none |
| Lancaster Phillip | director | Jun 2026 | Jul 1, 2026 | none |
| Amron Arthur H | director | Jan 2019 | Jun 22, 2026 | none |
| Amron Holdings LLC | director | Jun 2026 | Jun 22, 2026 | none |
Owners of more than 10% of a classsales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Cd Holding Company, LLC | 10% owner | Jun 2026 | Jun 22, 2026 | none |
Earlier names on the record18, newest filing first
Smith Arthur L · director · last filing May 2025Booker Corey J. · director · last filing Nov 2024Palm James D · director · last filing Jun 2024Straehla Arty · officer · last filing Dec 2023Layton Mark E. · officer · last filing Mar 2023Gpor Distribution Trust · 10% owner · last filing Jul 2021Meh Sub LLC · director · last filing Nov 2019Ross Matthew · director · last filing Nov 2019Wexford Catalyst Trading Ltd · director · last filing Nov 2019Wexford Spectrum Trading Ltd · director · last filing Nov 2019Yellen Jonathan H · director · last filing Nov 2019Heerwagen Paul K IV · director · last filing Jun 2019Mccarthy Marc T · director · last filing Jun 2019Laforge Rusty Neal · officer · last filing Aug 2018Gulfport Energy Corp · director · last filing Aug 2018Gaydosik Aaron · director · last filing Oct 2016Mammoth Energy Holdings LLC · director · last filing Oct 2016Weiss Andre · director · last filing Oct 2016
A person is listed as reporting now after a filing in the last fifteen months. The record shows when someone last filed; it does not say why they stopped. Each name links to the filings on sec.gov.