TUSK
Mammoth Energy Services, Inc.
Mammoth Energy Services, Inc. insider trading
Insiders at Mammoth Energy Services, Inc. have been buying its stock on the open market. The largest purchase in the last 30 days was Plaumann Mark Lawrence (Director) buying $15K of TUSK, filed Sep 17, 2026. Every open-market purchase and sale its officers, directors and 10% owners filed in that time is listed below, each linked to the original Form 4.
- Bought on the open market
- $15K
- Sold
- —
- Insiders
- 1
- Latest trade
- Sep 16, 2026
From SEC filings · last 30 days
Recent TUSK insider transactions
Plaumann Mark LawrenceDirector
Bought 5,000 sh at $3.00 · Sep 16, 2026
$15K
Filing
SEC Form 4 data, Q3 2024 to Q2 2026
TUSK insider trading by quarter
Between Jul 01, 2024 and Jun 30, 2026, 4 insiders traded TUSK on the open market: 7 purchases worth $10.5M and 12 sales worth $389.4K. In the last four quarters alone: 6 purchases ($10.5M) and 0 sales, by 2 insiders.
| Quarter | Bought | Sold | Insiders |
|---|---|---|---|
| Q2 2026 | +$10.5M5 buys | — | |
| Q1 2026 | — | — | |
| Q4 2025 | +$18.9K1 buy | — | |
| Q3 2025 | — | — | |
| Q2 2025 | — | −$213.1K3 sales | |
| Q1 2025 | — | — | |
| Q4 2024 | +$3K1 buy | −$176.3K9 sales | |
| Q3 2024 | — | — |
- Largest purchase
- +$10.5M of TUSK by Wexford GP LLC (Chief Business Officer · Director) on Jun 17, 2026.
- Largest sale
- −$125.5K of TUSK by Smith Arthur L (Director) on May 20, 2025.
Open-market transactions through Jun 30, 2026most recent first
Wexford GP LLC
Chief Business Officer · Director
+$10.5M
Jun 17, 2026
4,019,574 sh · $2.60
Amron Arthur H
Director
+$6.6K
Jun 12, 2026
2,000 sh · $3.28
Amron Arthur H
Director
+$8.1K
Jun 11, 2026
2,500 sh · $3.22
Amron Arthur H
Director
+$9.8K
May 28, 2026
3,000 sh · $3.25
Amron Arthur H
Director
+$8.1K
May 26, 2026
2,500 sh · $3.24
Amron Arthur H
Director
+$18.9K
Dec 11, 2025
10,000 sh · $1.89
Smith Arthur L
Director
−$50.2K
May 22, 2025
20,000 sh · $2.51
Smith Arthur L
Director
−$125.5K
May 20, 2025
50,000 sh · $2.51
Smith Arthur L
Director
−$37.4K
May 19, 2025
15,000 sh · $2.49
Amron Arthur H
Director
+$3K
Dec 12, 2024
1,000 sh · $2.97
Booker Corey J.
Director
−$52.1K
Nov 25, 2024
15,000 sh · $3.47
Booker Corey J.
Director
−$34.3K
Nov 22, 2024
10,000 sh · $3.43
Booker Corey J.
Director
−$21.8K
Nov 21, 2024
6,709 sh · $3.25
Booker Corey J.
Director
−$16.1K
Nov 20, 2024
5,000 sh · $3.21
Booker Corey J.
Director
−$12.6K
Nov 14, 2024
3,607 sh · $3.50
| Date | Insider | Shares | Price | Value |
|---|---|---|---|---|
| Jun 17, 2026 | Wexford GP LLCChief Business Officer · Director | 4,019,574 | $2.60 | +$10.5M |
| Jun 12, 2026 | Amron Arthur HDirector | 2,000 | $3.28 | +$6.6K |
| Jun 11, 2026 | Amron Arthur HDirector | 2,500 | $3.22 | +$8.1K |
| May 28, 2026 | Amron Arthur HDirector | 3,000 | $3.25 | +$9.8K |
| May 26, 2026 | Amron Arthur HDirector | 2,500 | $3.24 | +$8.1K |
| Dec 11, 2025 | Amron Arthur HDirector | 10,000 | $1.89 | +$18.9K |
| May 22, 2025 | Smith Arthur LDirector | 20,000 | $2.51 | −$50.2K |
| May 20, 2025 | Smith Arthur LDirector | 50,000 | $2.51 | −$125.5K |
| May 19, 2025 | Smith Arthur LDirector | 15,000 | $2.49 | −$37.4K |
| Dec 12, 2024 | Amron Arthur HDirector | 1,000 | $2.97 | +$3K |
| Nov 25, 2024 | Booker Corey J.Director | 15,000 | $3.47 | −$52.1K |
| Nov 22, 2024 | Booker Corey J.Director | 10,000 | $3.43 | −$34.3K |
| Nov 21, 2024 | Booker Corey J.Director | 6,709 | $3.25 | −$21.8K |
| Nov 20, 2024 | Booker Corey J.Director | 5,000 | $3.21 | −$16.1K |
| Nov 14, 2024 | Booker Corey J.Director | 3,607 | $3.50 | −$12.6K |
From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.
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Questions
- Are TUSK insiders buying or selling?
- Between Sep 16, 2026 and Sep 16, 2026, 1 Mammoth Energy Services, Inc. insider made 1 open-market purchase worth $15K and no sales, a net purchase of $15K.
- How much TUSK stock have insiders bought and sold in the last two years?
- Between Jul 01, 2024 and Jun 30, 2026, 4 Mammoth Energy Services, Inc. insiders made 7 open-market purchases worth $10.5M and 12 sales worth $389.4K. In the four quarters to Jun 30, 2026: 6 purchases ($10.5M) and no sales. The largest purchase was Wexford GP LLC buying $10.5M on Jun 17, 2026. The largest sale was Smith Arthur L selling $125.5K on May 20, 2025.
- What was the largest recent TUSK insider trade?
- Plaumann Mark Lawrence (Director) bought $15K of TUSK stock on Sep 16, 2026 at about $3.00 a share.
- When did an insider last buy TUSK shares?
- The most recent open-market purchase on file is Plaumann Mark Lawrence (Director) buying $15K on Sep 16, 2026.
- Where does TUSK insider trading data come from?
- From the Form 4 filings Mammoth Energy Services, Inc.'s officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.
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