D. Mark Dewalch serves as Executive at Black Stone Minerals, L.P., where they oversee executive responsibilities. Since joining the company, D. Mark Dewalch has executed 48 insider transactions totaling $2.1M, demonstrating a bullish approach to their equity position. Their most recent transaction on Jan 13, 2026 involved receiving (via award) 14,255 shares valued at $0.
D. Mark Dewalch currently holds 392,605 shares of Black Stone Minerals, L.P. (BSM), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, D. Mark Dewalch has been a net buyer of BSM stock. They have purchased $2.1M and sold $0 worth of shares.
D. Mark Dewalch's most recent insider trade was on Jan 13, 2026, when they sold 14,255 shares at $0.00 per share.
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| $13.14 |
| Discretionary |
| Jul 3, 2025 | BSM | $18.7K | Award | 1,433 | $13.08 | Discretionary |
| Aug 15, 2024 | BSM | $500.0K | Purchase | 34,200 | $14.62 | Discretionary |
| Jul 5, 2024 | BSM | $18.7K | Award | 1,196 | $15.67 | Discretionary |
| Apr 5, 2024 | BSM | $18.7K | Award | 1,173 | $15.98 | Discretionary |
| Feb 26, 2024 | BSM | $50.3K | Purchase | 3,250 | $15.47 | Discretionary |
| Jan 11, 2024 | BSM | $0 | Award | 12,307 | $N/A | Discretionary |
| Nov 17, 2023 | BSM | $390.0K | Purchase | 22,297 | $17.49 | Discretionary |
| Nov 16, 2023 | BSM | $372.0K | Purchase | 21,703 | $17.14 | Discretionary |
| Mar 6, 2023 | BSM | $493.7K | Purchase | 31,150 | $15.85 | Discretionary |
| Mar 6, 2023 | BSM | $49.1K | Purchase | 3,100 | $15.85 | Discretionary |
| Jan 11, 2023 | BSM | $0 | Award | 12,539 | $N/A | Discretionary |
| Jan 11, 2022 | BSM | $0 | Award | 14,115 | $N/A | Discretionary |
| Jan 12, 2021 | BSM | $0 | Award | 15,414 | $N/A | Discretionary |
| Jan 13, 2020 | BSM | $0 | Award | 13,389 | $N/A | Discretionary |
| Jun 10, 2019 | BSM | $88.0K | Purchase | 5,350 | $16.44 | Discretionary |
| May 24, 2019 | BSM | $0 | Conversion | 20,108 | $N/A | Discretionary |
| May 24, 2019 | BSM | $0 | Conversion | 4,333 | $N/A | Discretionary |
| May 24, 2019 | BSM | $0 | Conversion | 3,827 | $N/A | Discretionary |
| May 24, 2019 | BSM | $0 | Conversion | 70,865 | $N/A | Discretionary |
| Jan 11, 2019 | BSM | $0 | Award | 10,842 | $N/A | Discretionary |
| Nov 16, 2018 | BSM | $20.0K | Purchase | 1,175 | $17.06 | Discretionary |
| Apr 5, 2018 | BSM | $0 | Conversion | 91 | $N/A | Discretionary |
| Apr 5, 2018 | BSM | $0 | Conversion | 91 | $N/A | Discretionary |
| Apr 5, 2018 | BSM | $0 | Conversion | 273 | $N/A | Discretionary |
| Apr 5, 2018 | BSM | $0 | Conversion | 152 | $N/A | Discretionary |
| Jan 11, 2018 | BSM | $0 | Award | 9,536 | $N/A | Discretionary |
| Apr 28, 2017 | BSM | $0 | Conversion | 61 | $N/A | Discretionary |
| Apr 28, 2017 | BSM | $0 | Conversion | 152 | $N/A | Discretionary |