Form4.ai tracks every SEC insider trade in real time. See every TUSK insider filing with a free account — no card.
See every TUSK insider filing — free account, no card.
Free accountMAMMOTH ENERGY SERVICES, INC. (TUSK) has 1 SEC Form 4 insider filings on record in the last 90 days. That includes 1 insider purchase totalling $15K. Most recent filing: Sept. 17, 2026.
Open-market value, last 90 days
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Sep 17, 2026 SEC filing | Plaumann Mark Lawrence Director | Bought | $15,000 | -9.7% 30D |
Create a free account to see the 1 TUSK filing from the last 90 days. No card needed.
Create free accountWant TUSK insider buys the moment they're filed, with Telegram alerts? Try Pro free for 7 days
Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.