Plaumann Mark Lawrence
SEC insider (Form 3/4/5 filer). CIK 0001290795. Director at MAMMOTH ENERGY SERVICES, INC. (TUSK) and 1 other issuer. 12 reported Form 4/5 transactions since Sep 2024; latest on Sep 16, 2026. Located in OKLAHOMA CITY, OK.
Companies Plaumann Mark Lawrence has filed insider reports for
- MAMMOTH ENERGY SERVICES, INC. (TUSK): Director
- Diamondback Energy, Inc. (FANG): Director
Plaumann Mark Lawrence
CIK: 0001290795
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (12 total)
- Sep 16, 2026TUSK
MAMMOTH ENERGY SERVICES, INC.
PurchaseDirect5K shares at avg. $3.00$15K - Aug 21, 2026FANG
Diamondback Energy, Inc.
SaleDirect1K shares at avg. $210.58$211K - Jun 9, 2026FANG
Diamondback Energy, Inc.
SaleDirect500 shares at avg. $196.50$98K - May 20, 2026FANG
Diamondback Energy, Inc.
AwardDirect982 shares- - Jun 19, 2025FANG
Diamondback Energy, Inc.
OtherDirect3K shares- - May 21, 2025FANG
Diamondback Energy, Inc.
AwardDirect1.4K shares- - Dec 5, 2024FANG
Diamondback Energy, Inc.
GiftDirect100 shares- - Nov 13, 2024FANG
Diamondback Energy, Inc.
GiftDirect2.3K shares- - Nov 13, 2024FANG
Diamondback Energy, Inc.
SaleIndirect240 shares at avg. $181.00$43K - Nov 13, 2024FANG
Diamondback Energy, Inc.
SaleDirect1.2K shares at avg. $181.00$208K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 16, 2026 |  TUSK MAMMOTH ENERGY SERVICES, INC. | Purchase | 5,000 | $3.00 | $15,000 | Direct |
| Aug 21, 2026 |  FANG Diamondback Energy, Inc. | Sale | 1,000 | $210.58 | $210,577 | Direct |
| Jun 9, 2026 | FANG Diamondback Energy, Inc. | Sale | 500 | $196.50 | $98,250 | Direct |
| May 20, 2026 | FANG Diamondback Energy, Inc. | Award | 982 | - | $0 | Direct |
| Jun 19, 2025 | FANG Diamondback Energy, Inc. | Other | 2,965 | - | - | Direct |
| May 21, 2025 | FANG Diamondback Energy, Inc. | Award | 1,417 | - | - | Direct |
| Dec 5, 2024 | FANG Diamondback Energy, Inc. | Gift | 100 | - | $0 | Direct |
| Nov 13, 2024 | FANG Diamondback Energy, Inc. | Gift | 2,310 | - | $0 | Direct |
| Nov 13, 2024 | FANG Diamondback Energy, Inc. | Sale | 240 | $181.00 | $43,440 | Indirect |
| Nov 13, 2024 | FANG Diamondback Energy, Inc. | Sale | 1,150 | $181.00 | $208,150 | Direct |
1-10 of 12 transactions