Plaumann Mark Lawrence insider trades
Plaumann Mark Lawrence has filed 11 Form 4s with the SEC that we hold, for Diamondback Energy, Inc. (FANG) (Director) and Mammoth Energy Services, INC. (TUSK) (Director). Across all of them we count 1 purchase worth $15.0K and 4 sales worth $560.4K reported on Form 4. In the last 12 months: 1 purchase ($15.0K) and 2 sales ($308.8K). The largest single trade was a sale of 1,000 shares of Diamondback Energy, Inc. worth $210.6K, dated 2026-08-21. Of 1 sale filed since we began reading the 10b5-1 checkbox, 0 (0%) were marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2022-06-13 and the latest 2026-09-17.
Diamondback Energy, Inc. (FANG)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2024-11-13 | S, sale reported on Form 4 | 1,150 | $208.2K | 2024-11-14 |
| 2024-11-13 | S, sale reported on Form 4 | 240 | $43.4K | 2024-11-14 |
| 2026-06-09 | S, sale reported on Form 4 | 500 | $98.2K | 2026-06-10 |
| 2026-08-21 | S, sale reported on Form 4 | 1,000 | $210.6K | 2026-08-24 |
Mammoth Energy Services, INC. (TUSK)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2026-09-16 | P, purchase reported on Form 4 | 5,000 | $15.0K | 2026-09-17 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1290795) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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