SEC Form 4 · accession 0001398344-26-011113
MAMMOTH ENERGY SERVICES, INC. · TUSK
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owners
Charles E Davidson
Officer — Chief Business Officer · Director · 10% Owner
WEXFORD CAPITAL LP
Officer — Chief Business Officer · Director · 10% Owner
Joseph Jacobs
Officer — Chief Business Officer · Director · 10% Owner
Wexford GP LLC
Officer — Chief Business Officer · Director · 10% Owner
Period of report
Jun 17, 2026
Accepted (ET)
Jun 22, 2026 · 4:26 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001679268
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Jun 17, 2026 | J | 1,072,896 | $0.00 | A | 1,451,034 | D | |
| Common StockF3,F4,F5 | Jun 17, 2026 | J | 6,354,667 | $0.00 | A | 6,601,215 | I | See footnotes |
| Common StockF3,F4,F5 | Jun 17, 2026 | P | 4,019,574 | $2.6043 | A | 10,620,789 | I | See footnotes |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1Represents an in-kind distribution from MEH SUB LLC ("MEH SUB"), an entity managed by Wexford Capital LP ("Wexford Capital"), as payment of fees and expenses owed to Wexford Capital related to its performance of investment management services.
- F2Represents an in-kind distribution from MEH SUB that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration.
- F3Represents the common stock of the Issuer held in the aggregate by Wexford Spectrum Trading Limited ("WST"), Wexford Catalyst Trading Limited ("WCT") and Wexford Focused Trading Limited ("WFT", and together with WST and WCT, the "Wexford Entities").
- F4Wexford Capital may, by reason of its status as (i) sub-advisor of each of WST and WCT and (ii) investment manager of WFT be deemed to own beneficially the securities held by the Wexford Entities. Wexford GP LLC ("Wexford GP") may, as the General Partner of Wexford Capital, be deemed to own beneficially the securities held by the Wexford Entities. Each of Charles E. Davidson ("Davidson") and Joseph M. Jacobs ("Jacobs", and together with the Wexford Entities, Wexford Capital, Wexford GP and Davidson, the "Reporting Persons") may, by reason of his status as a controlling person of Wexford GP, be deemed to own beneficially the securities held by the Wexford Entities.
- F5Each of Wexford Capital, Wexford GP, Davidson and Jacobs share the power to vote and to dispose of the securities held by the Wexford Entities. Each of Wexford Capital, Wexford GP, Davidson and Jacobs disclaim beneficial ownership of the securities held by the Wexford Entities and this report shall not be deemed as an admission that they are the beneficial owners of such securities, except to the extent of any pecuniary interests therein. The Reporting Persons may be deemed to be a director and officer of the Issuer by virtue of Paul Jacobi, an employee of Wexford Capital, serving as a director and officer of the Issuer.