Mammoth Energy Services, Inc.
TUSKNasdaqCIK 1679268EnergyFiscal year ends Dec 31
All transactions: 3
Non-derivative transactions reported on Forms 4, newest first. Purchases and sales (codes P and S) are open-market trades; the other codes are grants, exercises, withholding and gifts. The reported price is as stated on the form, not a market price.
What these mean: insiders, Form 4, transaction codes, Rule 10b5-1 plans.
No open-market purchases or sales by insiders are in coverage from Dec 2024 to Nov 2026.
| Date | Insider | Transaction | Shares | Reported price | Value | Filing |
|---|---|---|---|---|---|---|
| 2018-07-30 | Gulfport Energy CorpDirector, 10% owner | Sale | 118,974 | $38.01 | $4.5m | Form 4 |
| 2018-06-29 | Gulfport Energy CorpDirector, 10% owner | Sale | 1,235,600 | $38.01 | $47.0m | Form 4 |
| 2016-10-19 | Gulfport Energy CorpDirector, 10% owner | Sale | 76,250 | $14.0625 | $1.1m | Form 4 |
Source: SEC EDGAR, Forms 4. Last ingested by Listed: Oct 30, 2026, 17:00 ET. Listed shows no prices and gives no investment advice.