MAMMOTH ENERGY SERVICES (TUSK) stock: insider trades, news & valuation
Industrials · Strong buyingShare price and insider trades
MAMMOTH ENERGY SERVICES insider trading at a glance (Oct 9, 2026): in the past 12 months, 3 insiders bought $10.5M and 0 sold $0 of TUSK stock on the open market.
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TUSK insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | $15K | 1 | — | 0 |
| Q2 2026 | $10.5M | 5 | — | 0 |
| Q1 2026 | — | 0 | — | 0 |
| Q4 2025 | $19K | 1 | — | 0 |
Valuation, profit and volume
Summary
Over the past 12 months, 3 MAMMOTH ENERGY SERVICES, INC. insiders reported open-market purchases totaling $10.5M, while 0 insiders reported sales totaling $0.
TUSK stock news and SEC filings
Recent 8-K filings and headlines. Tone is scored from the headline wording; “Policy” marks regulatory, trade or government topics.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 17SEC | Mark Lawrence PlaumannDirector | Buy | 5,000new position | $3.00 | $15K | -6.0% | — |
| Jun 22SEC | Wexford Gp LlcChief Business Officer | Buy | 4,019,57410,620,789 held (+61%) | $2.60 | $10.5M | +8.5% | — |
| Jun 15SEC | Arthur H AmronDirector | Buy | 2,50065,135 held (+4%) | $3.22 | $8K | -12.4% | — |
| Jun 15SEC | Arthur H AmronDirector | Buy | 2,00067,135 held (+3%) | $3.28 | $7K | -14.0% | — |
| May 28SEC | Arthur H AmronDirector | Buy | 3,00062,635 held (+5%) | $3.25 | $10K | -13.2% | — |
| May 28SEC | Arthur H AmronDirector | Buy | 2,50059,635 held (+4%) | $3.24 | $8K | -13.0% | — |
| Dec 15SEC | Arthur H AmronDirector | Buy | 10,00057,135 held (+21%) | $1.89 | $19K | +49.2% | — |
Insiders at MAMMOTH ENERGY SERVICES, INC.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Wexford Gp LlcChief Business Officer | $10.5M | — | Jun 22, 2026 | — |
| Arthur H AmronDirector | $51K | — | Jun 15, 2026 | — |
| Mark Lawrence PlaumannDirector | $15K | — | Sep 17, 2026 | — |
Insider activity at other Industrials companies
Same sector, ranked by insider buying in the last 90 days.
TUSK stock: common questions
Are MAMMOTH ENERGY SERVICES, INC. insiders buying TUSK stock?
In the past 12 months, 3 insiders reported open-market purchases of TUSK worth $10.5M. The latest was Director Mark Lawrence Plaumann bought $15K of TUSK at $3.00 — first open-market purchase in our records; opens a new position.
Are MAMMOTH ENERGY SERVICES, INC. insiders selling TUSK stock?
0 insiders reported sales worth $0 over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is TUSK's 52-week range?
Over the past year TUSK has traded between $1.73 and $3.84. It last closed at $2.82 on Oct 9, 2026.