Key facts
- This page summarizes WEXFORD CAPITAL LP's Form 4 filing for MAMMOTH ENERGY SERVICES, INC. (TUSK).
- 3 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 22 Jun 2026, 16:26.
WEXFORD CAPITAL LP - 17 Jun 2026 Form 4 Insider Report for MAMMOTH ENERGY SERVICES, INC. (TUSK)
- Reporting relationship
- Chief Business Officer, Director, 10%+ Owner
- Issuer ticker
- TUSK
- Reported as of
- 17 Jun 2026
- Net transaction value
- +$10,468,177
- SEC form
- 4
- Accepted by SEC
- 22 Jun 2026, 16:26:43 UTC
- Prior SEC filing
- 14 Mar 2024
- Next SEC filing
- 20 Aug 2026
- Source filing
- View source filing
- Reporting owner signature
- Wexford Capital LP, By: Wexford GP LLC, its general partner, By: Mark E. Ahern, Vice President and Assistant Secretary
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
WEXFORD CAPITAL LP filed Form 4 for MAMMOTH ENERGY SERVICES, INC. (TUSK) on 22 Jun 2026.
Change
- Previous filing in this sequence was filed on 14 Mar 2024.
- Current net transaction value: +$10,468,177.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (4)
CIK 0001048462
Primary reporting owner
WEXFORD CAPITAL LP
- Relationship
- Chief Business Officer, Director, 10%+ Owner
- Address
- 777 SOUTH FLAGLER DRIVE, SUITE 602 EAST, WEST PALM BEACH
- Signature
- Wexford Capital LP, By: Wexford GP LLC, its general partner, By: Mark E. Ahern, Vice President and Assistant Secretary
- Signature date
- 22 Jun 2026
CIK 0001472112
Wexford GP LLC
- Relationship
- Chief Business Officer, Director, 10%+ Owner
- Address
- C/O WEXFORD CAPITAL LP, 777 SOUTH FLAGLER DRIVE, SUITE 602 EAST, WEST PALM BEACH
- Signature
- Wexford GP LLC, By: Mark E. Ahern, Vice President and Assistant Secretary
- Signature date
- 22 Jun 2026
CIK 0001001391
DAVIDSON CHARLES E
- Relationship
- Chief Business Officer, Director, 10%+ Owner
- Address
- C/O WEXFORD CAPITAL LP, 777 SOUTH FLAGLER DRIVE, SUITE 602, WEST PALM BEACH
- Signature
- Charles E. Davidson
- Signature date
- 22 Jun 2026
CIK 0001048485
JACOBS JOSEPH
- Relationship
- Chief Business Officer, Director, 10%+ Owner
- Address
- C/O WEXFORD CAPITAL LP, 777 SOUTH FLAGLER DRIVE, SUITE 602 EAST, WEST PALM BEACH
- Signature
- Joseph M. Jacobs
- Signature date
- 22 Jun 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
TUSK
transaction
Common Stock
Other
- Transaction value
- Shares
- +1,072,896
- Change %
- +284%
- Price
- $0.000000*
- Shares after
- 1,451,034
- Date
- 17 Jun 2026
- Ownership
- Direct
- Footnotes
- F1
TUSK
transaction
Common Stock
Other
- Transaction value
- Shares
- +1,072,896
- Change %
- +284%
- Price
- $0.000000*
- Shares after
- 1,451,034
- Date
- 17 Jun 2026
- Ownership
- Direct
- Footnotes
- F1
TUSK
transaction
Common Stock
Other
- Transaction value
- Shares
- +1,072,896
- Change %
- +284%
- Price
- $0.000000*
- Shares after
- 1,451,034
- Date
- 17 Jun 2026
- Ownership
- Direct
- Footnotes
- F1
TUSK
transaction
Common Stock
Other
- Transaction value
- Shares
- +1,072,896
- Change %
- +284%
- Price
- $0.000000*
- Shares after
- 1,451,034
- Date
- 17 Jun 2026
- Ownership
- Direct
- Footnotes
- F1
TUSK
transaction
Common Stock
Other
- Transaction value
- Shares
- +6,354,667
- Change %
- +2577%
- Price
- $0.000000*
- Shares after
- 6,601,215
- Date
- 17 Jun 2026
- Ownership
- See footnotes
- Footnotes
- F2, F3, F4, F5
TUSK
transaction
Common Stock
Other
- Transaction value
- Shares
- +6,354,667
- Change %
- +2577%
- Price
- $0.000000*
- Shares after
- 6,601,215
- Date
- 17 Jun 2026
- Ownership
- See footnotes
- Footnotes
- F2, F3, F4, F5
TUSK
transaction
Common Stock
Other
- Transaction value
- Shares
- +6,354,667
- Change %
- +2577%
- Price
- $0.000000*
- Shares after
- 6,601,215
- Date
- 17 Jun 2026
- Ownership
- See footnotes
- Footnotes
- F2, F3, F4, F5
TUSK
transaction
Common Stock
Other
- Transaction value
- Shares
- +6,354,667
- Change %
- +2577%
- Price
- $0.000000*
- Shares after
- 6,601,215
- Date
- 17 Jun 2026
- Ownership
- See footnotes
- Footnotes
- F2, F3, F4, F5
TUSK
transaction
Common Stock
Purchase
- Transaction value
- $10,468,177
- Shares
- +4,019,574
- Change %
- +61%
- Price
- $2.60
- Shares after
- 10,620,789
- Date
- 17 Jun 2026
- Ownership
- See footnotes
- Footnotes
- F3, F4, F5
TUSK
transaction
Common Stock
Purchase
- Transaction value
- $10,468,177
- Shares
- +4,019,574
- Change %
- +61%
- Price
- $2.60
- Shares after
- 10,620,789
- Date
- 17 Jun 2026
- Ownership
- See footnotes
- Footnotes
- F3, F4, F5
TUSK
transaction
Common Stock
Purchase
- Transaction value
- $10,468,177
- Shares
- +4,019,574
- Change %
- +61%
- Price
- $2.60
- Shares after
- 10,620,789
- Date
- 17 Jun 2026
- Ownership
- See footnotes
- Footnotes
- F3, F4, F5
TUSK
transaction
Common Stock
Purchase
- Transaction value
- $10,468,177
- Shares
- +4,019,574
- Change %
- +61%
- Price
- $2.60
- Shares after
- 10,620,789
- Date
- 17 Jun 2026
- Ownership
- See footnotes
- Footnotes
- F3, F4, F5
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 5 footnotes
Footnote F1
Represents 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.
Footnote F2
Represents an in-kind distribution from MEH SUB that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration.
Footnote F3
Represents 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").
Footnote F4
Wexford 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.
Footnote F5
Each 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.