Mammoth Energy Services Inc.
Organization details
- Legal name
- Mammoth Energy Services Inc.
- Ownership
- Public
- Status
- Active
- Sector (GICS)
- Energy
- SIC code
- 1389 — Oil & Gas Field Services, NEC
- Jurisdiction of incorporation
- Delaware
- Headquarters city
- Oklahoma City
- Headquarters state / province
- Oklahoma
- Headquarters country
- United States
- Fiscal year end
- December
- Ticker symbol
- TUSK
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0001679268
- EIN
- 32-0498321
Board of directors
-
Arthur H. Amron · DirectorSince 2023
-
Arthur L. Smith · DirectorSince 2023
-
Arty Straehla · Director · Chief Executive OfficerSince 2023
-
Charles E. Davidson · Director · Chief Business OfficerSince 2024
-
Corey J. Booker · DirectorSince 2023
-
James D. Palm · DirectorSince 2023
-
Joseph Jacobs · Director · Chief Business OfficerSince 2024
-
Mark Lawrence Plaumann · DirectorSince 2026
-
Paul M. Jacobi · Director · Chief Business OfficerSince 2023
-
Phillip Lancaster · DirectorSince 2026
Chief executives
Director election results
Annual meeting of June 25, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
92.0%
-
95.9%
-
96.8%
-
98.7%
-
98.9%
-
99.1%
Board connections
2 of this board's directors also sit on 2 other boards. 1 is in the same sector.
-
Diamondback Energy Inc. Same sectorvia Mark Lawrence Plaumann
- via Arthur H. Amron
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $10,517,252
- 7 purchases by 3 insiders
- Sold, last 12 months
- $0
- 0 sales by 0 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 16, 2026 | Mark Lawrence Plaumann Director | Open-market purchase | +5,000 | $3.00 | $15,000 |
| Jun 26, 2026 | Phillip Lancaster Director | Other | +68,152 | — | — |
| Jun 17, 2026 | Paul M. Jacobi Director, Officer (Chief Business Officer) | Other | +3,211 | — | — |
| Jun 17, 2026 | Amron Holdings LLC Director | Other | +19,121 | — | — |
| Jun 17, 2026 | Wexford GP LLC Director, Officer (Chief Business Officer), 10% owner | Other | +1,072,896 | — | — |
| Jun 17, 2026 | CD Holding Company, LLC 10% owner | Other | +2,403,831 | — | — |
| Jun 17, 2026 | Amron Holdings LLC Director | Other | +10,329 | — | — |
| Jun 17, 2026 | Wexford GP LLC Director, Officer (Chief Business Officer), 10% owner | Other | +6,354,667 | — | — |
| Jun 17, 2026 | CD Holding Company, LLC 10% owner | Other | +4,066,610 | — | — |
| Jun 17, 2026 | Wexford GP LLC Director, Officer (Chief Business Officer), 10% owner | Open-market purchase | +4,019,574 | $2.60 | $10,450,892 |
| Jun 12, 2026 | Arthur H. Amron Director | Open-market purchase | +2,000 | $3.28 | $6,560 |
| Jun 11, 2026 | Arthur H. Amron Director | Open-market purchase | +2,500 | $3.22 | $8,050 |
| May 28, 2026 | Arthur H. Amron Director | Open-market purchase | +3,000 | $3.25 | $9,750 |
| May 26, 2026 | Arthur H. Amron Director | Open-market purchase | +2,500 | $3.24 | $8,100 |
| Dec 11, 2025 | Arthur H. Amron Director | Open-market purchase | +10,000 | $1.89 | $18,900 |
Peers
Compare boardsOrganizations in the same sector, closest in location and size first.
Questions about Mammoth Energy Services Inc.
Who is the CEO of Mammoth Energy Services Inc.?
Arty Straehla is Mammoth Energy Services Inc.'s Chief Executive Officer.
How many directors are on Mammoth Energy Services Inc.'s board?
Mammoth Energy Services Inc.'s board has 10 directors: Arthur H. Amron, Arthur L. Smith, Arty Straehla, Charles E. Davidson, Corey J. Booker, James D. Palm, Joseph Jacobs, Mark Lawrence Plaumann, Paul M. Jacobi and Phillip Lancaster.
Are Mammoth Energy Services Inc. insiders buying or selling shares?
Over the last 12 months, Mammoth Energy Services Inc. insiders bought $10.5 million of shares in 7 purchases and made no open-market sales on the open market, as reported to the SEC on Forms 4 and 5.
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