Every 8-K that Mammoth Energy Services, Inc. (TUSK) has filed with the SEC in the last 24 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 8-K covers material events a company has to report between its quarterly reports, so if you follow TUSK and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full TUSK filings page.
Mammoth Energy Services reported strong second-quarter 2026 growth, with revenue from continuing operations rising 110% year over year to $26.1 million and Adjusted EBITDA improving to $2.6 million. The company still recorded a net loss from continuing operations of $1.2 million, or $0.02 per diluted share, compared with a $36.5 million loss a year earlier.
Rental services, driven by aviation activity, generated $10.2 million of revenue, while sand, accommodation and drilling segments also grew versus 2025. Management raised full-year 2026 guidance, now expecting revenue growth to exceed 90% and Adjusted EBITDA margin to exceed 10%. Liquidity comprised $77.0 million of cash, cash equivalents and marketable securities and an undrawn $20.0 million revolving credit facility as of June 30, 2026.
Mammoth Energy Services, Inc. reported the results of its annual stockholder meeting held on June 25, 2026 in Oklahoma City. Stockholders elected six directors – Arthur Amron, Corey Booker, Paul Jacobi, Phil Lancaster, James Palm and Mark Plaumann – to serve until the 2027 annual meeting.
They also approved, on an advisory basis, the compensation of the company’s named executive officers and indicated a preference for holding the advisory vote on executive compensation every year, with 35,911,762 votes cast for an annual frequency. In addition, stockholders ratified the appointment of Carr, Riggs & Ingram L.L.C. as independent registered public accounting firm for the fiscal year ending December 31, 2026.
Mammoth Energy Services, Inc. has changed its independent auditor. On May 13, 2026, the Audit Committee dismissed Deloitte & Touche LLP as the company’s independent registered public accounting firm and notified Deloitte the same day.
The company states that for the fiscal year ended December 31, 2025 and the interim period through May 13, 2026, there were no disagreements with Deloitte and no reportable events under Item 304 of Regulation S-K. Deloitte’s audit report on the 2025 consolidated financial statements contained no adverse opinion, disclaimer of opinion, or qualifications.
Also on May 13, 2026, the Audit Committee approved the engagement of Carr, Riggs & Ingram, L.L.C. as Mammoth Energy’s new independent registered public accounting firm for the fiscal year ending December 31, 2026 and related interim periods. Deloitte’s confirming letter to the SEC is filed as Exhibit 16.1.
Mammoth Energy Services reported a strong turnaround in the first quarter of 2026. Total revenue from continuing operations was $22.0 million, up from $11.6 million a year earlier and $9.5 million in the prior quarter, driven largely by growth in rental services and aviation, including a $6.5 million auxiliary power unit sale.
The company generated net income from continuing operations of $4.7 million, or $0.10 per diluted share, compared with a $2.2 million loss a year ago and a $12.3 million loss in the fourth quarter of 2025. Adjusted EBITDA from continuing operations improved to $1.9 million from losses in both comparison periods.
Mammoth ended March 31, 2026 debt-free with $125.1 million of cash, cash equivalents and marketable securities and an undrawn revolving credit facility with $45.0 million of borrowing capacity. Management highlighted the start of share repurchases and raised its 2026 outlook, now expecting to achieve full-year positive Adjusted EBITDA.
Mammoth Energy Services, Inc. filed an 8-K reporting fourth-quarter and full-year 2025 results. The company continued to post losses but showed a markedly cleaner balance sheet and higher liquidity after a major portfolio reshaping.
For 2025, total revenue from continuing operations was $44.3 million versus $45.6 million in 2024. Net loss from continuing operations narrowed to $63.8 million, or $1.32 per diluted share, from $183.1 million, or $3.81 per share, helped by lower SG&A and the absence of large prior-year credit loss charges. Adjusted EBITDA from continuing operations improved to ($17.4) million from ($171.2) million.
Management highlighted four divestitures that generated more than $150 million in cash proceeds and the deployment of over $65 million into an aviation rental platform. At December 31, 2025, total liquidity was $158.3 million, including $102.0 million of unrestricted cash, $19.6 million of marketable securities and $36.7 million of borrowing capacity. As of March 3, 2026, liquidity was $156.6 million.
Mammoth Energy Services (TUSK) furnished an update on its business by issuing a press release with operational and financial results for the third quarter ended September 30, 2025. The release is attached as Exhibit 99.1 to a Form 8-K dated October 31, 2025.
The company states this information is furnished under Item 2.02 and is not deemed “filed” for purposes of Section 18 of the Exchange Act, nor incorporated into Securities Act registration statements unless specifically identified.
Mammoth Energy Services, Inc. filed a current report to share that it has released its operational and financial results for the second quarter ended June 30, 2025. The company issued a press release on August 8, 2025, which is included as Exhibit 99.1 to this report. The press release contains the detailed second quarter 2025 results and related commentary from management.
The company notes that the information in this results release, including Exhibit 99.1, is being furnished rather than filed under securities laws, meaning it is not automatically incorporated into registration statements unless specifically referenced.
Mammoth Energy Services, Inc. (NASDAQ: TUSK) filed an 8-K announcing the sale of all hydraulic fracturing equipment held by subsidiaries Stingray Pressure Pumping LLC and Mammoth Equipment Leasing LLC to MGB Manufacturing, LLC for $15.0 million in cash. The divested assets belong to the Company’s Well Completion segment and the transaction closed concurrently with the signing of the Equipment Purchase Agreement on 16 June 2025. Piper Sandler & Co. acted as exclusive advisor.
Because the carrying value of goodwill related to the hydraulic fracturing business now exceeds fair value, Mammoth expects to record a non-cash impairment charge of $7.7-$9.2 million in Q2 2025.
The Company also referenced its previously disclosed T&D Transaction—the April 2025 divestiture of three transmission & distribution subsidiaries—and filed unaudited pro forma condensed consolidated financial statements (Exhibit 99.1) reflecting both divestitures.
Key implications for investors:
- Immediate liquidity boost of $15 million.
- Streamlining of portfolio away from capital-intensive pressure pumping operations.
- Expected goodwill impairment nearly offsets transaction proceeds, pressuring near-term earnings but non-cash in nature.
- Future revenue and EBITDA from hydraulic fracturing will cease unless replaced by new lines or acquisitions.