Black Stone Minerals, L.P. (BSM) Insider Trading
Over the last 3 months, BSM insiders made 6 open-market buys and 3 sales, a net purchase of $933K (SEC Form 4). Over the last 6 months, 127 institutions increased and 91 reduced their position (13F).
Insider Activity
Sentiment
66/100
Buys (3m)
6
Sells (3m)
3
Net (3m)
$933.5K
Insiders buying
Insider trades by month Buys Sells
Aug
Sep
Mar
Apr
May
Jun
Context3-month price -10.1%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 2, 2026 | DeWalch D Markdirector | Buy | 36,363 | $13.48 |
| May 28, 2026 | DeWalch D Markdirector | Buy | 37,650 | $13.21 |
| May 14, 2026 | Carter Thomas L Jrdirector, officer: Executive Chairman | Buy | 1,120 | $13.50 |
| May 13, 2026 | Longmaid Ashley Jdirector | Sell | 11,128 | $13.45 |
| May 12, 2026 | Carter Thomas L Jrdirector, officer: Executive Chairman | Buy | 23,604 | $13.32 |
| May 12, 2026 | Carter Thomas L Jrdirector, officer: Executive Chairman | Buy | 25,000 | $13.47 |
| May 12, 2026 | Carter Thomas L Jrdirector, officer: Executive Chairman | Buy | 19,154 | $13.48 |
| May 6, 2026 | Putman Luke Stevensofficer: SVP, General Counsel, and Sec | Sell | 29,386 | $13.75 |
| Apr 7, 2026 | Putman Luke Stevensofficer: SVP, General Counsel, and Sec | Sell | 29,386 | $14.45 |
| Apr 6, 2026 | Kyle Jerry V. Jr.director | Grant | 1,240 | $15.12 |
| Apr 6, 2026 | Hamman Anne Lenoirdirector | Grant | 473 | $15.12 |
| Apr 6, 2026 | Randall William E.director | Grant | 1,488 | $15.12 |
| Apr 6, 2026 | Stuart Alexander D.director | Grant | 1,570 | $15.12 |
| Apr 6, 2026 | DeWalch D Markdirector | Grant | 1,240 | $15.12 |
| Mar 12, 2026 | Hamman Anne Lenoirdirector | Grant | 6,613 | — |
| Mar 6, 2026 | Putman Luke Stevensofficer: SVP, General Counsel, and Sec | Sell | 30,276 | $15.25 |
| Feb 26, 2026 | DeWalch Taylordirector, officer: Co-CEO and President | Grant | 1,958 | — |
| Feb 26, 2026 | DeWalch Taylordirector, officer: Co-CEO and President | Tax | 478 | $15.23 |
| Feb 26, 2026 | Putman Luke Stevensofficer: SVP, General Counsel, and Sec | Tax | 25,302 | $15.23 |
| Feb 26, 2026 | Bonner Chrisofficer: SVP, CFO, and Treasurer | Tax | 430 | $15.23 |
| Feb 26, 2026 | Putman Luke Stevensofficer: SVP, General Counsel, and Sec | Grant | 68,853 | — |
| Feb 26, 2026 | Carter Thomas L Jrdirector, officer: Executive Chairman | Tax | 53,641 | $15.23 |
| Feb 26, 2026 | Carter Thomas L Jrdirector, officer: Executive Chairman | Grant | 136,315 | — |
| Feb 26, 2026 | Bonner Chrisofficer: SVP, CFO, and Treasurer | Grant | 1,447 | — |
| Feb 26, 2026 | Carter Fowlerdirector, officer: Co-CEO and President | Grant | 1,330 | — |
| Feb 26, 2026 | Carter Fowlerdirector, officer: Co-CEO and President | Tax | 325 | $15.23 |
| Feb 6, 2026 | Putman Luke Stevensofficer: SVP, General Counsel, and Sec | Grant | 65,420 | — |
| Feb 6, 2026 | Carter Fowlerdirector, officer: Co-CEO and President | Grant | 80,106 | — |
| Feb 6, 2026 | Carter Thomas L Jrdirector, officer: Executive Chairman | Grant | 53,404 | — |
| Feb 6, 2026 | DeWalch Taylordirector, officer: Co-CEO and President | Grant | 80,106 | — |
Source: BSM SEC Form 4 filings, latest Jun 2, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their BSM positions over the last 6 months (SEC Form 13F).
Increased
127
New positions
34
Reduced
91
Sold out
35
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| MORGAN STANLEY | Increased | 8.3M | May 15, 2026 |
| MORGAN STANLEY | Increased | 7.1M | Feb 13, 2026 |
| WILLIAM MARSH RICE UNIVERSITY | Unchanged | 5.7M | Jan 15, 2026 |
| WILLIAM MARSH RICE UNIVERSITY | Unchanged | 5.7M | May 11, 2026 |
| FMR LLC | Increased | 4.5M | May 15, 2026 |
| BANK OF AMERICA CORP /DE/ | Increased | 2.6M | Feb 3, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 2.2M | Feb 17, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 2.1M | May 18, 2026 |
| PENN DAVIS MCFARLAND INC | Increased | 2.0M | Jan 16, 2026 |
| PENN DAVIS MCFARLAND INC | Reduced | 2.0M | Apr 21, 2026 |
| INVESTMENT MANAGEMENT ASSOCIATES INC /ADV | Reduced | 1.9M | Feb 3, 2026 |
| INVESTMENT MANAGEMENT ASSOCIATES INC /ADV | Reduced | 1.9M | May 7, 2026 |
| FMR LLC | New Position | 1.9M | Feb 17, 2026 |
| NATIXIS | Unchanged | 1.6M | May 14, 2026 |
| NATIXIS | Increased | 1.6M | Feb 13, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.