BSM

SEC source: 0001639921-26-000013 · wk-form4_1791233940.xml · nonDerivative · entry 1

Stuart Alexander D. · CIK 0001639921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,041,733

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001636920-26-000012 · wk-form4_1791233844.xml · nonDerivative · entry 1

Kyle Jerry V. Jr. · CIK 0001636920 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 323,798

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001709335-26-000010 · wk-form4_1791233739.xml · nonDerivative · entry 1

Randall William E. · CIK 0001709335 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 194,955

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001638259-26-000014 · wk-form4_1791233672.xml · nonDerivative · entry 1

DeWalch D Mark · CIK 0001638259 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 434,146

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0002110484-26-000007 · wk-form4_1791233639.xml · nonDerivative · entry 1

Hamman Anne Lenoir · CIK 0002110484 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,737

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001639921-26-000011 · wk-form4_1787173337.xml · nonDerivative · entry 1

Stuart Alexander D. · CIK 0001639921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,040,075

SEC source: 0001987724-26-000004 · wk-form4_1786394925.xml · nonDerivative · entry 2

Whitehead James · CIK 0001987724 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Lacy Properties Ltd.

Disclosed balance after: 646,058

F1 · kind: The Reporting Person has indicated that Eagle Gathering System Ltd., Lacy Properties Ltd., and R. Lacy Services Ltd. Retirement Plan plan to divest their common-unit positions by year-end 2026 for estate-planning and diversification purposes; the reported sales are part of that divestment plan.

SEC source: 0001987724-26-000004 · wk-form4_1786394925.xml · nonDerivative · entry 1

Whitehead James · CIK 0001987724 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Eagle Gathering System Ltd.

Disclosed balance after: 0

F1 · kind: The Reporting Person has indicated that Eagle Gathering System Ltd., Lacy Properties Ltd., and R. Lacy Services Ltd. Retirement Plan plan to divest their common-unit positions by year-end 2026 for estate-planning and diversification purposes; the reported sales are part of that divestment plan.

SEC source: 0001636920-26-000010 · wk-form4_1785877214.xml · nonDerivative · entry 1

Kyle Jerry V. Jr. · CIK 0001636920 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By trust

Disclosed balance after: 7,665

F1 · kind: The units were acquired as part of a liquidating distribution from a family limited partnership over which the Reporting Person exercised no investment or voting control.

F1 · price: The units were acquired as part of a liquidating distribution from a family limited partnership over which the Reporting Person exercised no investment or voting control.

SEC source: 0001709335-26-000008 · wk-form4_1783025669.xml · nonDerivative · entry 1

Randall William E. · CIK 0001709335 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 193,384

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001638259-26-000012 · wk-form4_1783025739.xml · nonDerivative · entry 1

DeWalch D Mark · CIK 0001638259 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 432,837

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001636920-26-000008 · wk-form4_1783025595.xml · nonDerivative · entry 1

Kyle Jerry V. Jr. · CIK 0001636920 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 322,489

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001639921-26-000009 · wk-form4_1783025460.xml · nonDerivative · entry 1

Stuart Alexander D. · CIK 0001639921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,055,975

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0002110484-26-000005 · wk-form4_1783025349.xml · nonDerivative · entry 1

Hamman Anne Lenoir · CIK 0002110484 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,428

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001638259-26-000010 · wk-form4_1780432376.xml · nonDerivative · entry 2

DeWalch D Mark · CIK 0001638259 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By DeWalch Diversified LP

Disclosed balance after: 631,248

F2 · price: The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions at prices ranging from $13.54 to $13.695, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote.

SEC source: 0001638259-26-000010 · wk-form4_1780432376.xml · nonDerivative · entry 1

DeWalch D Mark · CIK 0001638259 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By DeWalch Diversified LP

Disclosed balance after: 594,885

F1 · price: The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions at prices ranging from $13.42 to $13.56, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote.

SEC source: 0001638259-26-000008 · wk-form4_1780002576.xml · nonDerivative · entry 1

DeWalch D Mark · CIK 0001638259 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 431,495

F1 · price: The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions at prices ranging from $13.19 to $13.205, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote.

SEC source: 0001319960-26-000012 · wk-form4_1778792541.xml · nonDerivative · entry 1

Carter Thomas L Jr · CIK 0001319960 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,682,724

F1 · price: The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions at prices ranging from $13.49 to $13.50, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote.

SEC source: 0001319960-26-000010 · wk-form4_1778619717.xml · nonDerivative · entry 3

Carter Thomas L Jr · CIK 0001319960 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,681,604

F3 · price: The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions at prices ranging from $13.42 to $13.50, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote.

SEC source: 0002017596-26-000004 · wk-form4_1778708797.xml · nonDerivative · entry 1

Longmaid Ashley J · CIK 0002017596 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,335

F1 · price: The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $13.41 to 13.48, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001319960-26-000010 · wk-form4_1778619717.xml · nonDerivative · entry 2

Carter Thomas L Jr · CIK 0001319960 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,662,450

F2 · price: The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions at prices ranging from $13.44 to 13.48, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001319960-26-000010 · wk-form4_1778619717.xml · nonDerivative · entry 1

Carter Thomas L Jr · CIK 0001319960 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,637,450

F1 · price: The price reported in Column 4 is a weighted average price. These common units were purchased in multiple transactions at prices ranging from $13.29 to $13.34, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote.

SEC source: 0001337171-26-000013 · wk-form4_1778102395.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, General Counsel, and Sec

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 702,645

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 4, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $13.56 to 14.11, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001621434-26-000023 · wk-form4_1775595795.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, General Counsel, and Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 732,031

F1 · price: The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $14.31 to 14.64, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001337171-26-000014 · wk-form4a_1778102403.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, General Counsel, and Sec

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 732,031

F1 · kind: On April 7, 2026, the reporting person filed a Form 4 that inadvertently omitted the 10b5-1 checkbox and plan adoption date. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on December 4, 2025.

F2 · price: The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $14.31 to 14.64, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001636920-26-000006 · wk-form4_1775509731.xml · nonDerivative · entry 1

Kyle Jerry V. Jr. · CIK 0001636920 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 321,147

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001709335-26-000006 · wk-form4_1775509724.xml · nonDerivative · entry 1

Randall William E. · CIK 0001709335 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 191,774

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001639921-26-000007 · wk-form4_1775509713.xml · nonDerivative · entry 1

Stuart Alexander D. · CIK 0001639921 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,054,275

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0002110484-26-000003 · wk-form4_1775509719.xml · nonDerivative · entry 1

Hamman Anne Lenoir · CIK 0002110484 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,086

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001638259-26-000006 · wk-form4_1775509702.xml · nonDerivative · entry 1

DeWalch D Mark · CIK 0001638259 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 393,845

F1 · acquired: Pursuant to a previous arrangement, the Reporting Person elected to receive common units in lieu of a cash retainer for service on the Board of Directors of the Partnership's General Partner.

SEC source: 0001621434-26-000021 · wk-form4_1773349719.xml · nonDerivative · entry 1

Hamman Anne Lenoir · CIK 0002110484 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,613

SEC source: 0001337171-26-000008 · wk-form4_1772837744.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, General Counsel, and Sec

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 761,417

SEC source: 0001337171-26-000012 · wk-form4a_1778102387.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, General Counsel, and Sec

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 761,417

F1 · kind: On March 6, 2026, the reporting person filed a Form 4 that inadvertently omitted the plan adoption date. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 plan adopted by the reporting person on December 4, 2025.

SEC source: 0002057498-26-000007 · wk-form4_1772144343.xml · nonDerivative · entry 2

Carter Fowler · CIK 0002057498 · Director · Co-CEO and President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 125,379

F1 · kind: Represents settlement of performance units awarded under the Issuer's Long-Term Incentive Plan. For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on February 24, 2026.

SEC source: 0002057498-26-000007 · wk-form4_1772144343.xml · nonDerivative · entry 1

Carter Fowler · CIK 0002057498 · Director · Co-CEO and President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 125,704

F1 · kind: Represents settlement of performance units awarded under the Issuer's Long-Term Incentive Plan. For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on February 24, 2026.

SEC source: 0002025911-26-000007 · wk-form4_1772144337.xml · nonDerivative · entry 2

Bonner Chris · CIK 0002025911 · SVP, CFO, and Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,678

F1 · kind: Represents settlement of performance units awarded under the Issuer's Long-Term Incentive Plan. For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on February 24, 2026.

SEC source: 0002025911-26-000007 · wk-form4_1772144337.xml · nonDerivative · entry 1

Bonner Chris · CIK 0002025911 · SVP, CFO, and Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,108

F1 · kind: Represents settlement of performance units awarded under the Issuer's Long-Term Incentive Plan. For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on February 24, 2026.

SEC source: 0002025717-26-000007 · wk-form4_1772144354.xml · nonDerivative · entry 2

DeWalch Taylor · CIK 0002025717 · Director · Co-CEO and President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 141,369

F1 · kind: Represents settlement of performance units awarded under the Issuer's Long-Term Incentive Plan. For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on February 24, 2026.

SEC source: 0002025717-26-000007 · wk-form4_1772144354.xml · nonDerivative · entry 1

DeWalch Taylor · CIK 0002025717 · Director · Co-CEO and President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 141,847

F1 · kind: Represents settlement of performance units awarded under the Issuer's Long-Term Incentive Plan. For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on February 24, 2026.

SEC source: 0001319960-26-000008 · wk-form4_1772144360.xml · nonDerivative · entry 2

Carter Thomas L Jr · CIK 0001319960 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,613,846

F1 · kind: Represents settlement of performance units awarded under the Issuer's Long-Term Incentive Plan. For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on February 24, 2026.

SEC source: 0001319960-26-000008 · wk-form4_1772144360.xml · nonDerivative · entry 1

Carter Thomas L Jr · CIK 0001319960 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,667,487

F1 · kind: Represents settlement of performance units awarded under the Issuer's Long-Term Incentive Plan. For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on February 24, 2026.

SEC source: 0001337171-26-000007 · wk-form4_1772144348.xml · nonDerivative · entry 2

Putman Luke Stevens · CIK 0001337171 · SVP, General Counsel, and Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 791,693

F1 · kind: Represents settlement of performance units awarded under the Issuer's Long-Term Incentive Plan. For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on February 24, 2026.

SEC source: 0001337171-26-000007 · wk-form4_1772144348.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, General Counsel, and Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 816,995

F1 · kind: Represents settlement of performance units awarded under the Issuer's Long-Term Incentive Plan. For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on February 24, 2026.

SEC source: 0002057498-26-000004 · wk-form4_1770414865.xml · nonDerivative · entry 1

Carter Fowler · CIK 0002057498 · Director · Co-CEO and President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 124,374

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 2025 Long-Term Incentive Plan (the "LTIP"). Except as otherwise provided in the LTIP or the award agreement governing the award, the common units will vest in three equal installments on each of January 7, 2027, January 7, 2028, and January 7, 2029, so long as the Reporting Person remains continuously employed by the Issuer, Black Stone Minerals GP, L.L.C. (the "General Partner"), or any of their respective affiliates through each such vesting date.

SEC source: 0002025911-26-000004 · wk-form4_1770414847.xml · nonDerivative · entry 1

Bonner Chris · CIK 0002025911 · SVP, CFO, and Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,661

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 2025 Long-Term Incentive Plan (the "LTIP"). Except as otherwise provided in the LTIP or the award agreement governing the award, the common units will vest in three equal installments on each of January 7, 2027, January 7, 2028, and January 7, 2029, so long as the Reporting Person remains continuously employed by the Issuer, Black Stone Minerals GP, L.L.C. (the "General Partner"), or any of their respective affiliates through each such vesting date.

SEC source: 0002025717-26-000004 · wk-form4_1770414841.xml · nonDerivative · entry 1

DeWalch Taylor · CIK 0002025717 · Director · Co-CEO and President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,889

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 2025 Long-Term Incentive Plan (the "LTIP"). Except as otherwise provided in the LTIP or the award agreement governing the award, the common units will vest in three equal installments on each of January 7, 2027, January 7, 2028, and January 7, 2029, so long as the Reporting Person remains continuously employed by the Issuer, Black Stone Minerals GP, L.L.C. (the "General Partner"), or any of their respective affiliates through each such vesting date.

SEC source: 0001319960-26-000005 · wk-form4_1770414835.xml · nonDerivative · entry 1

Carter Thomas L Jr · CIK 0001319960 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,531,172

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 2025 Long-Term Incentive Plan (the "LTIP"). Except as otherwise provided in the LTIP or the award agreement governing the award, the common units will vest in three equal installments on each of January 7, 2027, January 7, 2028, and January 7, 2029, so long as the Reporting Person remains continuously employed by the Issuer, Black Stone Minerals GP, L.L.C. (the "General Partner"), or any of their respective affiliates through each such vesting date.

SEC source: 0001337171-26-000004 · wk-form4_1770414853.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, General Counsel, and Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 748,142

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 2025 Long-Term Incentive Plan (the "LTIP"). Except as otherwise provided in the LTIP or the award agreement governing the award, the common units will vest in three equal installments on each of January 7, 2027, January 7, 2028, and January 7, 2029, so long as the Reporting Person remains continuously employed by the Issuer, Black Stone Minerals GP, L.L.C. (the "General Partner"), or any of their respective affiliates through each such vesting date.

SEC source: 0002105455-26-000005 · wk-form4_1770414859.xml · nonDerivative · entry 1

Phillips Erin Leah · CIK 0002105455 · Controller (PAO)

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,911

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 2025 Long-Term Incentive Plan (the "LTIP"). Except as otherwise provided in the LTIP or the award agreement governing the award, the common units will vest in three equal installments on each of January 7, 2027, January 7, 2028, and January 7, 2029, so long as the Reporting Person remains continuously employed by the Issuer, Black Stone Minerals GP, L.L.C. (the "General Partner"), or any of their respective affiliates through each such vesting date.

SEC source: 0002017596-26-000002 · wk-form4_1768516420.xml · nonDerivative · entry 1

Longmaid Ashley J · CIK 0002017596 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 148,463