DeWalch D Mark insider trades
DeWalch D Mark has filed 22 Form 4s with the SEC that we hold, all for Black Stone Minerals, L.P. (BSM), as Director. Across all of them we count 9 purchases worth $3.3M and 0 sales worth $0 reported on Form 4. In the last 12 months: 3 purchases ($1.5M) and 0 sales ($0). The largest single trade was a purchase of 34,200 shares of Black Stone Minerals, L.P. worth $500.0K, dated 2024-08-15. The first filing on our record is dated 2022-01-11 and the latest 2026-10-05.
Black Stone Minerals, L.P. (BSM)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2023-03-06 | P, purchase reported on Form 4 | 3,100 | $49.1K | 2023-03-07 |
| 2023-03-06 | P, purchase reported on Form 4 | 31,150 | $493.7K | 2023-03-07 |
| 2023-11-16 | P, purchase reported on Form 4 | 21,703 | $372.0K | 2023-11-17 |
| 2023-11-17 | P, purchase reported on Form 4 | 22,297 | $390.0K | 2023-11-17 |
| 2024-02-26 | P, purchase reported on Form 4 | 3,250 | $50.3K | 2024-02-27 |
| 2024-08-15 | P, purchase reported on Form 4 | 34,200 | $500.0K | 2024-08-15 |
| 2026-05-28 | P, purchase reported on Form 4 | 37,650 | $497.4K | 2026-05-28 |
| 2026-05-29 | P, purchase reported on Form 4 | 36,363 | $490.2K | 2026-06-02 |
| 2026-06-01 | P, purchase reported on Form 4 | 36,363 | $495.3K | 2026-06-02 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1638259) 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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