Form4insider filings, from the source

Company · CIK 0001679268 · SIC 1389 — Oil & Gas Field Services, NEC · Nasdaq

MAMMOTH ENERGY SERVICES, INC. · TUSK

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $15k · 1sales $0 · 0net $15k
$10k$10k$100k$100k$1M$1MbuyssalesJun 28Jul 13Jul 28Aug 13Aug 28Sep 13Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 16, 2026 PForm 4 →Sep 17, 4:50 pm EDTMark Lawrence PlaumannDirector5,000$3.00$15,0005,000—

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.