INSIDER · CIK 1290795
Plaumann Mark Lawrence
Director at MAMMOTH ENERGY SERVICES, INC. (TUSK) · Director at Diamondback Energy, Inc. (FANG)
↗2 Form 4 rows in the window
Covers original filings from Aug 1, 2026 to Oct 29, 2026. Older trades and amendments are in the SEC history.
$15KBought on the market
$211KSold on the market
2Companies
Sep 17, 2026Latest filing
| Company | Title | Type | Owned | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 17, 202616:50 | Sep 16, 2026 | TUSKMAMMOTH ENERGY SERVICES, INC. | Director | P · Buy | $3.00 | +5,000 | 5,000 | New | +$15K | -11.5% | -3.0% |
| Aug 24, 202616:01 | Aug 21, 2026 | FANGDiamondback Energy, Inc. | Director | S · Sell | $210.58 | −1,000 | 12,437 | -7% | −$211K |