Black Stone Minerals, L.P. (BSM)
NYSE: BSM · Crude Petroleum & Natural Gas · Houston, TX · filing with the SEC since 2014
Who owns Black Stone Minerals, L.P.
As filed with the SECHolders of 5% or more
1
Morgan Stanley holds 5.2% of Common Units Representing Limited Partner Interests, as its SCHEDULE 13G filed Aug 20, 2026 says.
Directors and officers
16
report now, of 29 people on the record since 2015. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 1 named at left.
Holders of 5% or moreshare of the class, as filed
Morgan Stanley
SCHEDULE 13G · filed Aug 20, 2026 · Common Units Representing Limited Partner Interests
The Carlyle Group Inc.
SCHEDULE 13G/A · filed May 13, 2025 · Common Units · reported falling below 5%
What BSM reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Unproved Oil and Gas Properties
A company bought · acquisition · owns, named in the 10-K filed Feb 24, 2026
7 subsidiaries in 1 country, from the list filed with the 10-K filed Feb 24, 2026.
Insider tradesForm 4
10sales
8purchases
4sales on a scheduled plan
3people selling
$39.4Msold, in dollars
$3.1Mbought, in dollars
Open-market trades on Form 4 from Nov 10, 2025 to Nov 10, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 10, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window5 of 29 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Whitehead James | director | 4 | $37.1M | 0 | 0 | $0 |
| Putman Luke Stevens | SVP, General Counsel, and Sec | 5 | $2.2M | 4 | 0 | $0 |
| Longmaid Ashley J | director | 1 | $100,000 | 0 | 0 | $0 |
| Carter Thomas L Jr | Executive Chairman | 0 | $0 | 0 | 5 | $1.6M |
| Dewalch D Mark | director | 0 | $0 | 0 | 3 | $1.5M |