Mammoth Energy Services, Inc. (TUSK)
Mammoth Energy Services, Inc. brought in $78.9M of revenue over the twelve months to September 30, 2026, up 1,789.9% from a year earlier. Net income was $13.5M, a net margin of 17.1%. In fiscal 2025 capital spending exceeded operating cash flow by $89.1M. At September 30, 2026 it held $13.1M in cash. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on October 30, 2026.
Key facts about Mammoth Energy Services, Inc.
- Net worth
- Mammoth Energy Services, Inc. has a market value (market cap) of $147.3M at the latest share price, and shareholders' equity of $262.6M on its balance sheet at September 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.
- Revenue and profit
- In fiscal 2025 revenue was $44.3M (-2.9% year on year), with net income of $4.6M. Over the 12 months to September 30, 2026: revenue $78.9M, net income $13.5M.
- Cash flow
- In fiscal 2025 operations used $18.6M of cash.
- Latest report
- The latest periodic report (quarterly report, 10-Q) was filed with the SEC on October 30, 2026 and covers the period to September 30, 2026. Open on SEC EDGAR
- Next earnings report
- Mammoth Energy Services, Inc.'s next report is expected around March 5, 2027. That is an estimate from its filing rhythm, not a date the company has announced.
What Mammoth Energy Services, Inc. does
Mammoth Energy Services, Inc. is registered with the SEC under industry code SIC 1389 (Oil & Gas Field Services, NEC). Its shares trade on NASDAQ under the ticker TUSK.
Revenue and profit by year
Key figures
| Fiscal year | Revenue | Net income | Diluted EPS | Free cash flow |
|---|---|---|---|---|
| 2025 | $44.3M | $4.6M | $0.10 | -$89.1M |
| 2024 | $45.6M | -$207.3M | -$4.31 | $179.5M |
| 2023 | $309.5M | -$3.2M | -$0.07 | $12M |
| 2022 | $362.1M | -$619K | -$0.01 | $2.5M |
| 2021 | $229M | -$101.4M | -$2.18 | -$24.7M |
| 2020 | $313.1M | -$107.6M | -$2.36 | n/a |
Earnings: every quarter and the next report date
Full financial statements: income, balance sheet and cash flow
Where TUSK ranks in Energy
Dividends
| Fiscal year | Per share | Paid out | Of profit |
|---|---|---|---|
| 2021 | n/a | $0 | n/a |
| 2020 | n/a | $0 | n/a |
| 2019 | $0.25 | $11.2M | n/a |
| 2018 | $0.25 | $11.2M | 5% |
| 2017 | n/a | $0 | 0% |
| 2016 | n/a | $0 | n/a |
Latest SEC filings
What Mammoth Energy Services, Inc. has filed recently, newest first. Each links to the original document on SEC EDGAR.
- October 30, 2026Quarterly report 10-Q · period to September 30, 2026Revenue rose 97% to $21.3M versus the same quarter last year; diluted EPS $0.01 versus -$0.26.
- October 30, 2026
- October 30, 2026
- August 7, 2026Quarterly report 10-Q · period to June 30, 2026Revenue rose 111% to $26.1M versus the same quarter last year; diluted EPS -$0.01 versus $0.18.
- August 7, 2026
- June 26, 2026
- June 22, 2026Passive stake (5% or more) SCHEDULE 13G
- June 22, 2026Passive stake changed SCHEDULE 13G/A
- May 15, 2026
- May 15, 2026Additional proxy material DEFA14A
Insider trades
What the people running Mammoth Energy Services, Inc. did with its shares, from the Form 4 filings they must send the SEC within two business days.
Insiders bought $15K worth of shares on the open market in the last 90 days and sold none.
| Date | Insider | What | Shares | Value |
|---|---|---|---|---|
| September 16, 2026 | Plaumann Mark LawrenceDirector | Bought | 5,000 | $15K |
| June 26, 2026 | Lancaster PhillipDirector | Other change | 68,152 | - |
| June 17, 2026 | Davidson Charles E10% owner | Other change | 2,403,831 | - |
| June 17, 2026 | Davidson Charles E10% owner | Other changeindirect | 4,066,610 | - |
| June 17, 2026 | Wexford Capital LPChief Business Officer, Director, 10% owner | Other change | 1,072,896 | - |
| June 17, 2026 | Wexford Capital LPChief Business Officer, Director, 10% owner | Other changeindirect | 6,354,667 | - |
| June 17, 2026 | Wexford Capital LPChief Business Officer, Director, 10% owner | Boughtindirect | 4,019,574 | $10.5M |
| June 17, 2026 | Amron Arthur HDirector | Other change | 19,121 | - |
Who owns TUSK
Three views from three kinds of SEC filings, each with its own date. They overlap and are not added up.
5% holders
| Holder | Of class | Filed |
|---|---|---|
| Wexford Capital LP13G, passive with 3 related filers | 25.06% | June 22, 2026 |
| Charles E. Davidson13G, passive with 1 related filers | 13.43% | June 22, 2026 |
Largest institutional holders
Positions that investment managers reported on Form 13F for the quarter ended June 30, 2026, largest first, with the change on the quarter ended March 31, 2026. Managers file 13F up to 45 days after a quarter ends. 94 managers reported a position.
| Holder | Shares | Change on quarter |
|---|---|---|
| Wexford Capital LP | 12,071,823 | -9,996,389 |
| Adage Capital Partners GP, L.L.C. | 4,575,000 | 0 |
| Vanguard Capital Management LLC | 1,059,603 | +240,483 |
| Peapod Lane Capital LLC | 807,804 | +207,999 |
| Dimensional Fund Advisors LP | 691,667 | +5,468 |
| Jane Street Group, LLC | 506,662 | +483,808 |
| Citadel Advisors LLC | 452,163 | +120,796 |
| BlackRock, Inc. | 407,976 | -1,046,863 |
| Marshall Wace, Llp | 395,583 | new |
| Johns Hopkins University | 387,359 | new |
| Bridgeway Capital Management, LLC | 332,313 | 0 |
| Russell Investments Group, Ltd. | 329,821 | +261,791 |
| Geode Capital Management, LLC | 306,028 | -304,898 |
| Renaissance Technologies LLC | 292,280 | +60,308 |
| Arrowstreet Capital, Limited Partnership | 290,096 | new |
| Empowered Funds, LLC | 241,313 | 0 |
| Aqr Capital Management LLC | 177,824 | +111,093 |
| Vanguard Fiduciary Trust Co | 161,791 | -8,340 |
| Round Rock Advisors LLC | 152,841 | new |
| Morgan Stanley | 133,560 | -19,163 |
Insiders
6 insiders reported holding 18,834,361 shares in total, about $57.6M at the last price.
| Holder | Shares |
|---|---|
| Wexford Capital LPChief Business Officer, Director, 10% owner | 12,071,82310,620,789 held indirectly |
| Davidson Charles E10% owner | 6,470,4414,066,610 held indirectly |
| Lancaster PhillipDirector | 159,445 |
| Amron Arthur HDirector | 96,58510,329 held indirectly |
| Jacobi Paul M.Chief Business Officer, Director | 31,067 |
| Plaumann Mark LawrenceDirector | 5,000 |
Questions about TUSK
What does Mammoth Energy Services, Inc. do?
Mammoth Energy Services, Inc. is a company in the Energy sector, listed on NASDAQ as TUSK. Its shares trade on NASDAQ under the ticker TUSK.
What is Mammoth Energy Services, Inc.'s net worth?
Mammoth Energy Services, Inc. has a market value (market cap) of $147.3M at the latest share price, and shareholders' equity of $262.6M on its balance sheet at September 30, 2026. A company's "net worth" usually means one of these: what the market pays for all its shares, or its assets minus its liabilities.
Is Mammoth Energy Services, Inc. profitable?
Yes. Over the twelve months to September 30, 2026 it reported net income of $13.5M on revenue of $78.9M, a net margin of 17.1%.
How much revenue does Mammoth Energy Services, Inc. make?
Over the twelve months to September 30, 2026 Mammoth Energy Services, Inc. reported revenue of $78.9M. That is 1,789.9% more than a year earlier.
When did Mammoth Energy Services, Inc. last report?
Its most recent periodic report is the quarterly report (10-Q) filed on October 30, 2026. It covers the period to September 30, 2026.
When is Mammoth Energy Services, Inc.'s next earnings report?
Mammoth Energy Services, Inc.'s next report is expected around March 5, 2027. That is an estimate from its filing rhythm, not a date the company has announced.
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Where the numbers come from
Financial figures are the values Mammoth Energy Services, Inc. tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.
Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.