Black Stone Minerals, L.P. (BSM) Insider Trading
Over the last 3 months, BSM insiders made 0 open-market buys and 2 sales, a net sale of -$28.1M (SEC Form 4). Over the last 6 months, 113 institutions increased and 99 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
2
Net (3m)
-$28.1M
Insider trades by month Buys Sells
Sep
Mar
Apr
May
Jun
Aug
Context3-month price +8.4%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 10, 2026 | Whitehead Jamesdirector | Sell | 1,628,762 | $13.21 |
| Aug 10, 2026 | Whitehead Jamesdirector | Sell | 498,343 | $13.21 |
| Jul 2, 2026 | Kyle Jerry V. Jr.director | Grant | 1,342 | $13.97 |
| Jul 2, 2026 | Hamman Anne Lenoirdirector | Grant | 1,342 | $13.97 |
| Jul 2, 2026 | Randall William E.director | Grant | 1,610 | $13.97 |
| Jul 2, 2026 | DeWalch D Markdirector | Grant | 1,342 | $13.97 |
| Jul 2, 2026 | Stuart Alexander D.director | Grant | 1,700 | $13.97 |
| 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 | 19,154 | $13.48 |
| May 12, 2026 | Carter Thomas L Jrdirector, officer: Executive Chairman | Buy | 25,000 | $13.47 |
| 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 | DeWalch D Markdirector | Grant | 1,240 | $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 | Kyle Jerry V. Jr.director | Grant | 1,240 | $15.12 |
| Apr 6, 2026 | Hamman Anne Lenoirdirector | Grant | 473 | $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 | Bonner Chrisofficer: SVP, CFO, and Treasurer | Tax | 430 | $15.23 |
| Feb 26, 2026 | Carter Fowlerdirector, officer: Co-CEO and President | Grant | 1,330 | — |
| Feb 26, 2026 | Putman Luke Stevensofficer: SVP, General Counsel, and Sec | Grant | 68,853 | — |
| Feb 26, 2026 | DeWalch Taylordirector, officer: Co-CEO and President | Tax | 478 | $15.23 |
| Feb 26, 2026 | Carter Fowlerdirector, officer: Co-CEO and President | Tax | 325 | $15.23 |
| Feb 26, 2026 | DeWalch Taylordirector, officer: Co-CEO and President | Grant | 1,958 | — |
| Feb 26, 2026 | Carter Thomas L Jrdirector, officer: Executive Chairman | Tax | 53,641 | $15.23 |
Source: BSM SEC Form 4 filings, latest Aug 10, 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
113
New positions
38
Reduced
99
Sold out
10
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| MORGAN STANLEY | Increased | 8.9M | Aug 13, 2026 |
| MORGAN STANLEY | Reduced | 8.3M | May 15, 2026 |
| WILLIAM MARSH RICE UNIVERSITY | Unchanged | 5.7M | May 11, 2026 |
| William Marsh Rice University | Unchanged | 5.7M | Jul 23, 2026 |
| FMR LLC | Increased | 4.5M | May 15, 2026 |
| FMR LLC | Reduced | 4.5M | Aug 13, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 2.1M | May 18, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 2.1M | Aug 14, 2026 |
| PENN DAVIS MCFARLAND INC | Reduced | 2.0M | Apr 21, 2026 |
| PENN DAVIS MCFARLAND INC | Reduced | 2.0M | Jul 15, 2026 |
| INVESTMENT MANAGEMENT ASSOCIATES INC /ADV | Reduced | 1.9M | May 7, 2026 |
| INVESTMENT MANAGEMENT ASSOCIATES INC /ADV | Reduced | 1.8M | Aug 3, 2026 |
| NATIXIS | Unchanged | 1.6M | May 14, 2026 |
| NATIXIS | Unchanged | 1.6M | Aug 13, 2026 |
| AMERIPRISE FINANCIAL INC | New Position | 1.2M | Jul 17, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.