Alexander D. Stuart - 18 Aug 2026 Form 4 Insider Report for Black Stone Minerals, L.P. (BSM)

Reporting relationship: Director
Issuer ticker: BSM
Reported as of: 18 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 19 Aug 2026, 17:02:20 UTC
Prior SEC filing: 02 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Steve Putman, attorney-in-fact for Alexander D. Stuart

Key filing fact

Alexander D. Stuart filed Form 4 for Black Stone Minerals, L.P. (BSM) on 19 Aug 2026.

Key facts

This page summarizes Alexander D. Stuart's Form 4 filing for Black Stone Minerals, L.P. (BSM).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 19 Aug 2026, 17:02.

Change

Previous filing in this sequence was filed on 02 Jul 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001639921 Primary reporting owner

Stuart Alexander D.

Relationship: Director
Address: 1001 FANNIN STREET, SUITE 2020, HOUSTON
Signature: /s/ Steve Putman, attorney-in-fact for Alexander D. Stuart
Signature date: 19 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

BSM transaction

Common units representing limited partner interests

Gift

Transaction value
Shares: -15,900
Change %: -0.77%
Price: $0.000000^*
Shares after: 2,040,075
Date: 18 Aug 2026
Ownership: Direct

BSM holding

Common units representing limited partner interests

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,251,634
Date: 18 Aug 2026
Ownership: By RDS Investments, L.P.

BSM holding

Common units representing limited partner interests

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 74,541
Date: 18 Aug 2026
Ownership: By Alexander Douglas Stuart Primary Trust

BSM holding

Common units representing limited partner interests

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 74,541
Date: 18 Aug 2026
Ownership: By Marian Stuart Pillsbury Primary Trust

BSM holding

Common units representing limited partner interests

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 159,901
Date: 18 Aug 2026
Ownership: By UA R Douglas Stuart III Marital Trust

BSM holding

Common units representing limited partner interests

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 74,541
Date: 18 Aug 2026
Ownership: By Robert D. Stuart III Primary Trust

BSM holding

Common units representing limited partner interests

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 74,541
Date: 18 Aug 2026
Ownership: By James McClure Stuart Primary Trust

BSM holding

Common units representing limited partner interests

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 239,333
Date: 18 Aug 2026
Ownership: By Marian S. Pillsbury Family 2012 GST Trust

BSM holding

Common units representing limited partner interests

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 286,976
Date: 18 Aug 2026
Ownership: By Ann Peake Stuart 2011 Exempt Trust

BSM holding

Common units representing limited partner interests

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 180,775
Date: 18 Aug 2026
Ownership: By Robert D. Stuart, Jr. 1996 Marital Trust

BSM holding

Common units representing limited partner interests

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 6,687
Date: 18 Aug 2026
Ownership: By Barbara E Stuart GST Exempt Trust fbo Alexander D Stuart

BSM holding

Common units representing limited partner interests

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,112,711
Date: 18 Aug 2026
Ownership: By Topsfield Energy Ltd.

^* marks a reported price that did not pass the local price check.

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