Mammoth Energy Services, Inc. SEC filings TUSK
Mammoth Energy Services, Inc. has 369 filings in SEC EDGAR's recent list, going back to Jul 18, 2016. Its latest annual report, Form ARS, was filed on May 15, 2026 for the period ended May 15, 2026. The latest quarterly report (Form 10-Q) was filed on Oct 30, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 30, 2026 (material agreement, new debt, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Oct 30, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
Oct 30, 2026 | Oct 26, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Oct 30, 2026 | Oct 30, 2026 |
| 4 | Insider transaction | Sep 17, 2026 | Sep 16, 2026 |
| 10-Q | Quarterly report | Aug 7, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 7, 2026 | Aug 7, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jun 26, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 26, 2026 | Jun 25, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 22, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 22, 2026 | — |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 11, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 26, 2026 |
| ARS | Annual report to shareholders | May 15, 2026 | May 15, 2026 |
| DEFA14A | Additional proxy material | May 15, 2026 | — |
| DEF 14A | Proxy statement | May 15, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Auditor change
|
May 15, 2026 | May 13, 2026 |
| 10-Q | Quarterly report | May 11, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 11, 2026 | May 11, 2026 |
| 10-K | Annual report | Mar 6, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 6, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 11, 2025 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Regulation FD disclosure
|
Dec 4, 2025 | Dec 2, 2025 |
| 10-Q | Quarterly report | Nov 3, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 31, 2025 | Oct 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 144 | Notice of proposed sale | Aug 12, 2025 | — |
| 10-Q | Quarterly report | Aug 8, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2025 | Aug 8, 2025 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jul 3, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Officer or director change
|
Jun 30, 2025 | Jun 24, 2025 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Impairment
|
Jun 20, 2025 | Jun 16, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 12, 2025 | Jun 11, 2025 |
| 8-K |
Current report
Officer or director change
|
Jun 5, 2025 | May 30, 2025 |
| 4 | Insider transaction | May 27, 2025 | May 22, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 144 | Notice of proposed sale | May 12, 2025 | — |
| 10-Q | Quarterly report | May 7, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 7, 2025 | May 7, 2025 |
| ARS | Annual report to shareholders | Apr 28, 2025 | Apr 28, 2025 |
| DEFA14A | Additional proxy material | Apr 28, 2025 | — |
| DEF 14A | Proxy statement | Apr 28, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Officer or director change, Regulation FD disclosure
|
Apr 17, 2025 | Apr 11, 2025 |
| 8-K |
Current report
Auditor change
|
Mar 12, 2025 | Mar 7, 2025 |
| 10-K | Annual report | Mar 7, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 7, 2025 | Mar 7, 2025 |
| 8-K |
Current report
Officer or director change
|
Feb 13, 2025 | Feb 10, 2025 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 12, 2024 |
| 4 | Insider transaction | Nov 26, 2024 | Nov 22, 2024 |
| 4 | Insider transaction | Nov 22, 2024 | Nov 20, 2024 |
| 4 | Insider transaction | Nov 15, 2024 | Nov 13, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 13, 2024 | — |
| 4 | Insider transaction | Nov 12, 2024 | Nov 7, 2024 |
| 144 | Notice of proposed sale | Nov 7, 2024 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Nov 7, 2024 | Nov 6, 2024 |
| 10-Q | Quarterly report | Nov 1, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 1, 2024 | Nov 1, 2024 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
Oct 21, 2024 | Oct 16, 2024 |
| 8-K |
Current report
Agreement ended, Regulation FD disclosure
|
Oct 3, 2024 | Oct 1, 2024 |
| 10-Q | Quarterly report | Aug 9, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 9, 2024 | Aug 9, 2024 |
| 8-K |
Current report
Material agreement, Impairment
|
Jul 23, 2024 | Jul 22, 2024 |
| EFFECT | Filing | Jun 26, 2024 | — |
| CORRESP | Letter to the SEC | Jun 24, 2024 | — |
| UPLOAD | Letter from the SEC | Jun 21, 2024 | — |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Jun 14, 2024 | Jun 12, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 14, 2024 | Jun 12, 2024 |
| S-3 | Shelf registration | Jun 13, 2024 | — |
| S-8 | Employee stock plan registration | Jun 12, 2024 | — |
| 4 | Insider transaction | May 30, 2024 | May 28, 2024 |
| 10-Q | Quarterly report | May 2, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 2, 2024 | May 2, 2024 |
| ARS | Annual report to shareholders | Apr 29, 2024 | Apr 29, 2024 |
| DEFA14A | Additional proxy material | Apr 29, 2024 | — |
| DEF 14A | Proxy statement | Apr 29, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Mar 14, 2024 | Mar 12, 2024 |
| 4 | Insider transaction | Mar 14, 2024 | Mar 12, 2024 |
| 10-K | Annual report | Mar 1, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 1, 2024 | Mar 1, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2024 | — |
| 4 | Insider transaction | Dec 19, 2023 | Dec 18, 2023 |
| 4 | Insider transaction | Dec 15, 2023 | Dec 13, 2023 |
| 144 | Notice of proposed sale | Dec 13, 2023 | — |
| 8-K |
Current report
Material agreement, New debt
|
Dec 6, 2023 | Dec 1, 2023 |
| 10-Q | Quarterly report | Nov 9, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 9, 2023 | Nov 9, 2023 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 19, 2023 | Oct 16, 2023 |
| 10-Q | Quarterly report | Aug 11, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 11, 2023 | Aug 11, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 8, 2023 | Jun 7, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jun 8, 2023 | Jun 7, 2023 |
| 10-Q | Quarterly report | May 1, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Apr 27, 2023 | Apr 27, 2023 |
| ARS | Annual report to shareholders | Apr 25, 2023 | Apr 25, 2023 |
| DEFA14A | Additional proxy material | Apr 25, 2023 | — |
| DEF 14A | Proxy statement | Apr 25, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 3, 2023 |
| 4 | Insider transaction | Mar 7, 2023 | Mar 3, 2023 |
| 10-K | Annual report | Feb 24, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 23, 2023 | Feb 23, 2023 |
| SC 13G | Ownership over 5% (passive) | Feb 10, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2023 | — |
| 4 | Insider transaction | Nov 14, 2022 | Nov 11, 2022 |
| 10-Q | Quarterly report | Oct 28, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Oct 27, 2022 | Oct 27, 2022 |
| 10-Q | Quarterly report | Aug 2, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jul 28, 2022 | Jul 28, 2022 |
| 4 | Insider transaction | Jun 30, 2022 | Jun 29, 2022 |
| 4 | Insider transaction | Jun 30, 2022 | Jun 29, 2022 |
| 4 | Insider transaction | Jun 30, 2022 | Jun 29, 2022 |
| 4 | Insider transaction | Jun 30, 2022 | Jun 29, 2022 |
| 4 | Insider transaction | Jun 30, 2022 | Jun 29, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 30, 2022 | Jun 29, 2022 |
| 4 | Insider transaction | Jun 21, 2022 | Jun 16, 2022 |
| 4 | Insider transaction | Jun 15, 2022 | Jun 13, 2022 |
| 4 | Insider transaction | Jun 10, 2022 | Jun 8, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
May 24, 2022 | May 24, 2022 |
| 10-Q | Quarterly report | May 10, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 9, 2022 | May 9, 2022 |
| DEFA14A | Additional proxy material | May 2, 2022 | — |
| DEF 14A | Proxy statement | May 2, 2022 | Dec 31, 2021 |
| SC 13G | Ownership over 5% (passive) | Apr 21, 2022 | — |
| 4 | Insider transaction | Mar 11, 2022 | Mar 10, 2022 |
| 10-K | Annual report | Mar 4, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Mar 4, 2022 | Mar 4, 2022 |
| 5 | Annual insider ownership | Feb 14, 2022 | Dec 31, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2022 | — |
| 4 | Insider transaction | Dec 14, 2021 | Dec 13, 2021 |
| 10-Q | Quarterly report | Nov 5, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 5, 2021 | Nov 5, 2021 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Nov 3, 2021 | Oct 28, 2021 |
| 8-K |
Current report
Other events
|
Sep 27, 2021 | Sep 21, 2021 |
| 10-Q | Quarterly report | Aug 3, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jul 30, 2021 | Jul 30, 2021 |
| EFFECT | Filing | Jul 12, 2021 | — |
| 3 | Initial insider ownership | Jul 12, 2021 | Jun 30, 2021 |
| SC 13D | Ownership over 5% (active) | Jul 12, 2021 | — |
| CORRESP | Letter to the SEC | Jul 8, 2021 | — |
| UPLOAD | Letter from the SEC | Jun 25, 2021 | — |
| S-3 | Shelf registration | Jun 21, 2021 | — |
| 8-K |
Current report
Other events
|
Jun 9, 2021 | Jun 8, 2021 |
| 4 | Insider transaction | Jun 4, 2021 | Jun 2, 2021 |
| 4 | Insider transaction | Jun 4, 2021 | Jun 2, 2021 |
| 4 | Insider transaction | Jun 4, 2021 | Jun 2, 2021 |
| 4 | Insider transaction | Jun 4, 2021 | Jun 2, 2021 |
| 4 | Insider transaction | Jun 4, 2021 | Jun 2, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 4, 2021 | Jun 2, 2021 |
| 10-Q | Quarterly report | May 3, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Apr 29, 2021 | Apr 29, 2021 |
| DEFA14A | Additional proxy material | Apr 20, 2021 | — |
| DEF 14A | Proxy statement | Apr 20, 2021 | Dec 31, 2020 |
| 4 | Insider transaction | Mar 11, 2021 | Mar 11, 2021 |
| 4 | Insider transaction | Mar 11, 2021 | Mar 9, 2021 |
| 10-K | Annual report | Mar 1, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Feb 25, 2021 | Feb 25, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 5, 2021 | — |
| 4 | Insider transaction | Nov 13, 2020 | Nov 10, 2020 |
| 10-Q | Quarterly report | Oct 30, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Oct 29, 2020 | Oct 29, 2020 |
| 4 | Insider transaction | Sep 8, 2020 | Sep 4, 2020 |
| 4 | Insider transaction | Aug 19, 2020 | Aug 17, 2020 |
| 3 | Initial insider ownership | Aug 19, 2020 | Aug 17, 2020 |
| 8-K |
Current report
Other events
|
Aug 19, 2020 | Aug 17, 2020 |
| 8-K |
Current report
Officer or director change
|
Aug 12, 2020 | Aug 6, 2020 |
| 10-Q | Quarterly report | Jul 31, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jul 30, 2020 | Jul 30, 2020 |
| 4 | Insider transaction | Jul 7, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 7, 2020 | Jul 2, 2020 |
| 3 | Initial insider ownership | Jul 7, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 7, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 7, 2020 | Jul 2, 2020 |
| 8-K |
Current report
Shareholder vote results
|
Jul 2, 2020 | Jul 2, 2020 |
| DEFA14A | Additional proxy material | Jun 16, 2020 | — |
| DEF 14A | Proxy statement | Jun 10, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jun 9, 2020 | Jun 9, 2020 |
| 8-K |
Current report
Other events
|
Jun 9, 2020 | Jun 9, 2020 |
| 8-K |
Current report
Listing notice
|
May 22, 2020 | May 18, 2020 |
| 8-K |
Current report
Officer or director change
|
May 14, 2020 | May 8, 2020 |
| 10-Q | Quarterly report | May 11, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
May 11, 2020 | May 11, 2020 |
| 8-K |
Current report
Other events
|
Apr 29, 2020 | Apr 29, 2020 |
| 8-K |
Current report
Listing notice
|
Apr 22, 2020 | Apr 17, 2020 |
| 8-K |
Current report
Officer or director change
|
Apr 17, 2020 | Apr 14, 2020 |
| 4 | Insider transaction | Mar 4, 2020 | Mar 3, 2020 |
| 4 | Insider transaction | Mar 4, 2020 | Mar 3, 2020 |
| 10-K | Annual report | Mar 2, 2020 | Dec 31, 2019 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Oil & Gas Field Services, NEC (SIC 1389)
- Listed as
- TUSK (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Oklahoma City, OK
- SEC filer status
- Accelerated filer, Smaller reporting company
- SEC CIK
- 1679268
Other Oil & Gas Field Services, NEC companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.