MAMMOTH ENERGY SERVICES, INC.
For the period ended Dec 31, 2025. Filed Mar 6, 2026.
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FY2025 · Filed Mar 6, 2026
TUSK$3.27+6.9%Stored close · as of Nov 10, 2026
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Item 15. Exhibits and Financial Statement Schedules
The following documents are filed as part of this report or incorporated by reference herein:
(1)Financial Statements
| Page | |
|---|---|
| Financial Statements | |
| Report of Independent Registered Public Accounting Firm (PCAOB ID Number 34) | 1 |
| Report of Independent Registered Public Accounting Firm (PCAOB ID Number 248) | 3 |
| Consolidated Balance Sheets | 4 |
| Consolidated Statements of Comprehensive Income (Loss) | 5 |
| Consolidated Statements of Changes in Equity | 6 |
| Consolidated Statements of Cash Flows | 7 |
| Notes to Consolidated Financial Statements | 9 |
(2)Financial Statement Schedules
All financial statement schedules have been omitted because they are not applicable or the required disclosure is presented in the financial statements or notes thereto.
(3)Exhibits
| Exhibit Number | Exhibit Description |
| 3.1 | Amended and Restated Certificate of Incorporation of the Company (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-37917), filed with the SEC on November 15, 2016). |
| 3.2 | Amended and Restated Bylaws of the Company (incorporated by reference to Exhibit 3.2 to the Company’s Current Report on Form 8-K (File No. 001-37917), filed with the SEC on November 15, 2016). |
| 3.3 | First Amendment to Amended and Restated Bylaws of the Company (incorporated by reference to Exhibit 3.1 to the Company’s Current Report on Form 8-K (File No. 001-37917), filed with the SEC on June 9, 2020). |
| 4.1 | Description of Securities of the Company (incorporated by reference to Exhibit 4.1 to the Company’s Annual Report on Form 10-K (File No. 001-37917), filed with the SEC on March 2, 2020). |
| 4.2 | Specimen Certificate for shares of common stock, par value $0.01 per share, of the Company (incorporated by reference to Exhibit 4.1 to the Company’s Amendment No. 2 to the Registration Statement on Form S-1/A (File No. 333-213504), filed with the SEC on October 3, 2016). |
| 4.3 | Registration Rights Agreement, dated October 12, 2016, by and between the Company and Mammoth Energy Holdings, LLC (incorporated by reference to Exhibit 4.1 to the Company’s Current Report on Form 8-K (File No. 001-37917), filed with the SEC on November 15, 2016). |
| 10.1* | N810LA Helicopter Lease Extension Agreement, dated as of January 1, 2026 by and between Cobra Aviation Services LLC and Brim Equipment Leasing LLC. |
| 10.2* | N904AF Helicopter Lease Extension Agreement, dated as of January 1, 2026 by and between Leopard Aviation LLC and Brim Equipment Leasing LLC. |
| 10.3 | Advisory Services Agreement, dated as of October 19, 2016, by and between the Company and Wexford Capital LP (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K (File No. 001-37917), filed with the SEC on November 15, 2016). |
| 10.4 | Mammoth Energy Securities, Inc. 2016 Equity Incentive Plan (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-37917), filed with the SEC on November 15, 2016). |
| 10.5 | Form of Option Agreement (incorporated by reference to Exhibit 10.12 to the Company’s Amendment No. 1 to the Registration Statement on Form S-1/A (File No. 333-213504), filed with the SEC on September 23, 2016). |
| 10.6 | Form of Restricted Stock Unit Agreement (incorporated by reference to Exhibit 10.13 to the Company’s Amendment No. 1 to the Registration Statement on Form S-1/A (File No. 333-213504), filed with the SEC on September 23, 2016). |
| 10.7† | Form of Director and Officer Indemnification Agreement (incorporated by reference to Exhibit 10.14 to the Company’s Amendment No. 2 to the Registration Statement on Form S-1/A (File No. 333-213504), filed with the SEC on October 3, 2016). |
| 10.8 | Emergency Master Service Agreement for PREPA’s Electrical Grid Repairs-Hurricane Maria, executed on October 19, 2017, by the Puerto Rico Electric Power Authority (PREPA) and Cobra Acquisitions LLC (incorporated by reference to Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q (File No. 001-37917), filed with the SEC on November 14, 2017). |
| 10.9 | Amendment No. 1 to Emergency Master Service Agreement for PREPA’s Electrical Grid Repairs-Hurricane Maria, executed on November 1, 2017, by the Puerto Rico Electric Power Authority (PREPA) and Cobra Acquisitions LLC (incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q (File No. 001-37917), filed with the SEC on November 14, 2017). |
| 10.10 | Amendment No. 2 to Emergency Master Service Agreement for PREPA’s Electrical Grid Repairs-Hurricane Maria, dated as of December 8, 2017, between the Puerto Rico Electric Power Authority (PREPA) and Cobra Acquisitions LLC (incorporated by reference to Exhibit 10.3 to the Company’s Current Report on Form 8-K (File No. 001-37917), filed with the SEC on January 31, 2018). |
| 10.11 | Amendment No. 3 to Emergency Master Service Agreement for PREPA’s Electrical Grid Repairs-Hurricane Maria, dated December 21, 2017, between the Puerto Rico Electric Power Authority (PREPA) and Cobra Acquisitions LLC (incorporated by reference to Exhibit 10.4 to the Company’s Current Report on Form 8-K (File No. 001-37917), filed with the SEC on January 31, 2018). |
| 10.12 | Amendment No. 4 to Emergency Master Service Agreement for PREPA’s Electrical Grid Repairs-Hurricane Maria, dated as of January 28, 2018, between the Puerto Rico Electric Power Authority (PREPA) and Cobra Acquisitions LLC (incorporated by reference to Exhibit 10.5 to the Company’s Current Report on Form 8-K (File No. 001-37917), filed with the SEC on January 31, 2018). |
| 10.13 | Amendment No. 5 to Emergency Master Service Agreement for PREPA's Electrical Grid Repairs-Hurricane Maria, dated as of February 27, 2018, between the Puerto Rico Electric Power Authority (PREPA) and Cobra Acquisitions LLC (incorporated by reference to Exhibit 10.34 to the Company’s Annual Report on Form 10-K (File No. 001-37917), filed with the SEC on February 28, 2018). |
| 10.14 | Master Service Contract for PREPA's Electrical Grid Repairs Hurricane Maria, executed on May 26, 2018, by the Puerto Rico Electric Power Authority (PREPA) and Cobra Acquisitions LLC (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K (File No. 001-37917), filed with the SEC on May 31, 2018). |
| 10.15 | N810LA Helicopter Lease Agreement, dated as of January 10, 2020 and effective as of January 1, 2020, by and between Cobra Aviation LLC and Brim Equipment Leasing LLC (incorporated by reference to Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q (File No. 001-37917), filed with the SEC on May 11, 2020). |
| 10.16 | N904AF Helicopter Lease Agreement, dated as of January 10, 2020 and effective as of January 1, 2020, by and between Leopard Aviation LLC and Brim Equipment Leasing LLC (incorporated by reference to Exhibit 10.5 to the Company’s Quarterly Report on Form 10-Q (File No. 001-37917), filed with the SEC on May 11, 2020). |
| 10.17 | First Amendment to the Mammoth Energy Services, Inc. 2016 Equity Incentive Plan (incorporated by reference to Appendix A to the Company's Definitive Proxy Statement on Schedule 14A, filed with the SEC on June 10, 2020). |
| 10.18 | Revolving Credit Agreement, dated as of October 16, 2023, by and among Mammoth Energy Services, Inc., as borrower, certain of its direct and indirect subsidiaries, as guarantors, the lenders from time to time party thereto, and Fifth Third Bank, National Association, as agent, letters of credit issuer and swing line lender. |
| 10.19 | Mammoth Energy Services, Inc. 2024 Equity Incentive Plan (incorporated by reference to Annex B to the Registrant’s Definitive Proxy Statement on Schedule 14A filed with the SEC on April 29, 2024). |
| 10.20 | Credit Agreement Amendment, dated as of October 16, 2024, by and between the Company and Fifth Third Bank, National Association (incorporated by reference to Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q (File No. 001-37917), filed with the SEC on November 1, 2024). |
| 10.21 | Equity Interest Purchase Agreement, dated as of April 11, 2025, by and among Lion Power Services LLC, 5 Star Electric, LLC, Higher Power Electrical, LLC, Python Equipment LLC, Peak Utility Services Group, Inc. and Mammoth Energy Services, Inc. (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K (File No. 001-37917), filed with the SEC on April 17, 2025). |
| 10.22 | Amendment No. 2 to Revolving Credit Agreement, dated as of April 11, 2025, by and among Mammoth Energy Services, Inc. and Fifth Third Bank, National Association. (incorporated by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K (File No. 001-37917), filed with the SEC on April 17, 2025). |
| 10.23 | Annex A to Amendment No. 2 to Revolving Credit Agreement, dated as of April 11, 2025, by and among Mammoth Energy Services, Inc. and Fifth Third Bank, National Association. (incorporated by reference to Exhibit 10.3 to the Company's Current Report on Form 8-K (File No. 001-37917), filed with the SEC on April 17, 2025). |
| 10.24 | Equipment Purchase Agreement, dated as of June 16, 2025, by and among Stingray Pressure Pumping LLC, Mammoth Equipment Leasing LLC and MGB Manufacturing, LLC. (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K (File No. 001-37917), filed with the SEC on June 20, 2025). |
| 10.25 | Letter Agreement dated July 2, 2025, by and between Fifth Third Bank, National Association, and Mammoth Energy Services, Inc. (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K (File No. 001-37917), filed with the SEC on July 3, 2025). |
| 10.26 | Equity Purchase Agreement, dated as of December 2, 2025, by and among Aquawolf LLC, Mammoth Energy Partners LLC, Qualus LLC, and Mammoth Energy Services, Inc. (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K (File No. 001-37917), filed with the SEC on December 4, 2025). |
| 19.1* | Mammoth Energy Services Inc. Insider Trading and Unauthorized Disclosure of Information Policy |
| 19.2* | Mammoth Energy Services Inc. Supplemental Insider Trading Policy |
| 21.1* | List of Significant Subsidiaries of the Company. |
| 23.1* | John T. Boyd Company Consent. |
| 23.2* | Consent of Deloitte & Touche LLP with respect to the financial statements of Mammoth Energy Services Inc. |
| 23.3* | Consent of Grant Thornton LLP with respect to the financial statements of Mammoth Energy Services Inc. |
| 31.1* | Certification of Chief Operating Officer of the Registrant pursuant to Rule 13a-14(a) promulgated under the Securities Exchange Act of 1934, as amended. |
| 31.2* | Certification of Chief Financial Officer of the Registrant pursuant to Rule 13a-14(a) promulgated under the Securities Exchange Act of 1934, as amended. |
| 32.1** | Certification of Chief Operating Officer of the Registrant pursuant to Rule 13a-14(b) promulgated under the Securities Exchange Act of 1934, as amended, and Section 1350 of Chapter 63 of Title 18 of the United States Code. |
| 32.2** | Certification of Chief Financial Officer of the Registrant pursuant to Rule 13a-14(b) promulgated under the Securities Exchange Act of 1934, as amended, and Section 1350 of Chapter 63 of Title 18 of the United States Code. |
| 95.1* | Mine Safety Disclosure Exhibit. |
| 96.1 | Technical Report Summary for Piranha and Taylor Mines prepared by John T. Boyd Company (incorporated by reference to Exhibit 96.1 to the Company's Annual Report on Form 10-K (File No. 001-37917) filed with the SEC on March 4, 2022). |
| 97.1 | Mammoth Energy Services, Inc. Clawback Policy, effective as of December 1, 2023 (incorporated by reference to Exhibit 97.1 to the Company’s Annual Report on Form 10-K (File No. 001-37917), filed with the SEC on March 1, 2024). |
| 101.INS* | XBRL Instance Document. | |
| 101.SCH* | XBRL Taxonomy Extension Schema Document. | |
| 101.CAL* | XBRL Taxonomy Extension Calculation Linkbase Document. | |
| 101.DEF* | XBRL Taxonomy Extension Definition Linkbase Document. | |
| 101.LAB* | XBRL Taxonomy Extension Labels Linkbase Document. | |
| 101.PRE* | XBRL Taxonomy Extension Presentation Linkbase Document. | |
| 104 | Cover Page Interactive Data File - the cover page interactive data file does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document. | |
| * | Filed herewith. | |
| ** | Furnished herewith, not filed. | |
| + | Management contract, compensatory plan or arrangement. |
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