Putman Luke Stevens

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: 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: 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: 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: 0001337171-26-000002 · wk-form4_1767995945.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: 682,722

F1 · kind: Represents tax withholding associated with vesting of restricted common units issued pursuant to LTIP.

SEC source: 0001621434-25-000059 · wk-form4_1740698122.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: 697,642

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 25, 2025.

SEC source: 0001621434-25-000059 · wk-form4_1740698122.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: 734,709

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 25, 2025.

SEC source: 0001621434-25-000049 · wk-form4_1740006182.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: 638,701

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 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, 2026, January 7, 2027, and January 7, 2028, 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: 0001621434-25-000017 · wk-form4_1736374862.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: 575,817

F1 · kind: Represents forfeitures of restricted common units issued pursuant to LTIP.

SEC source: 0001621434-24-000053 · wk-form4_1708642046.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: 591,296

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 20, 2024.

SEC source: 0001621434-24-000053 · wk-form4_1708642046.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: 633,589

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 20, 2024.

SEC source: 0001621434-24-000044 · wk-form4_1706911588.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: 526,113

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 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, 2025, January 7, 2026, and January 7, 2027, 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: 0001621434-24-000011 · wk-form4_1704837677.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: 469,788

F1 · price: For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on January 5, 2024.

SEC source: 0001209191-23-027820 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 486,421

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 $15.00 to 15.14, 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: 0001209191-23-012857 · doc4.xml · nonDerivative · entry 2

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 586,421

F1 · acquired: 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 22, 2023.

SEC source: 0001209191-23-012857 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 613,666

F1 · acquired: 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 22, 2023.

SEC source: 0001209191-23-007143 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 544,431

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 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, 2024, January 7, 2025, and January 7, 2026, 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: 0001209191-23-002855 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 488,720

F1 · price: For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on January 6, 2023.

SEC source: 0001209191-22-013301 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 504,379

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 $11.41 to 12.11, 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: 0001209191-22-012763 · doc4.xml · nonDerivative · entry 2

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 564,379

F1 · acquired: 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 22, 2022.

SEC source: 0001209191-22-012763 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 582,831

F1 · acquired: 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 22, 2022.

SEC source: 0001209191-22-007255 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 523,457

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 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, 2023, January 7, 2024, and January 7, 2025, 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: 0001209191-22-002948 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 452,565

F1 · price: For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on January 7, 2022.

SEC source: 0001209191-21-035014 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 465,956

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 $9.61 to $10.01, 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: 0001209191-21-014372 · doc4.xml · nonDerivative · entry 2

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 515,956

F1 · acquired: 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 23, 2021.

SEC source: 0001209191-21-014372 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 530,264

F1 · acquired: 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 23, 2021.

SEC source: 0001209191-21-008184 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 471,509

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 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, 2022, January 7, 2023, and January 7, 2024, 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: 0001209191-21-003075 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 404,175

F1 · price: For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on January 7, 2021.

SEC source: 0001209191-20-013579 · doc4.xml · nonDerivative · entry 2

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 415,552

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 25, 2020.

SEC source: 0001209191-20-013579 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 432,218

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 25, 2020.

SEC source: 0001209191-20-013129 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 370,432

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 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, 2021, January 7, 2022, and January 7, 2023, 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: 0001209191-20-002922 · doc4.xml · nonDerivative · entry 2

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 322,226

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 15, 2019.

F3 · price: The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $12.86 to $13.27, 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: 0001209191-20-002922 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 352,226

F1 · price: For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on January 7, 2020.

SEC source: 0001209191-19-033343 · doc4.xml · derivative · entry 4

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common units representing limited partner interests · 29,221 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On May 24, 2019, each subordinated unit representing limited partner interests in the Issuer converted into one common unit representing limited partner interests in the Issuer pursuant to the terms of the Issuer's First Amended and Restated Agreement of Limited Partnership, as amended.

F1 · price: On May 24, 2019, each subordinated unit representing limited partner interests in the Issuer converted into one common unit representing limited partner interests in the Issuer pursuant to the terms of the Issuer's First Amended and Restated Agreement of Limited Partnership, as amended.

F1 · derivative.exercise_date: On May 24, 2019, each subordinated unit representing limited partner interests in the Issuer converted into one common unit representing limited partner interests in the Issuer pursuant to the terms of the Issuer's First Amended and Restated Agreement of Limited Partnership, as amended.

F1 · derivative.expiration_date: On May 24, 2019, each subordinated unit representing limited partner interests in the Issuer converted into one common unit representing limited partner interests in the Issuer pursuant to the terms of the Issuer's First Amended and Restated Agreement of Limited Partnership, as amended.

SEC source: 0001209191-19-033343 · doc4.xml · nonDerivative · entry 3

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 362,475

F2 · 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 May 24, 2019.

SEC source: 0001209191-19-033343 · doc4.xml · nonDerivative · entry 2

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 415,015

F2 · 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 May 24, 2019.

SEC source: 0001209191-19-033343 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 281,497

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On May 24, 2019, each subordinated unit representing limited partner interests in the Issuer converted into one common unit representing limited partner interests in the Issuer pursuant to the terms of the Issuer's First Amended and Restated Agreement of Limited Partnership, as amended.

SEC source: 0001209191-19-025139 · doc4.xml · nonDerivative · entry 3

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 252,276

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2019.

F4 · price: The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $17.34 to $17.51, 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: 0001209191-19-025139 · doc4.xml · nonDerivative · entry 2

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 258,833

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2019.

F3 · price: The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $17.38 to $17.50, 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 sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-19-025139 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 266,759

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2019.

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 $17.34 to $17.77, 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: 0001209191-19-020434 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 285,558

F1 · price: For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on March 15, 2019.

SEC source: 0001209191-19-019250 · doc4.xml · nonDerivative · entry 2

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 298,693

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 $17.09 to $17.34, 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 sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001209191-19-019250 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 304,910

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 $17.26 to $17.42, 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: 0001209191-19-014730 · doc4.xml · nonDerivative · entry 2

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 323,693

F1 · kind: Represents settlement of performance units and associated distribution-equivalent rights 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 26, 2019.

SEC source: 0001209191-19-014730 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 358,263

F1 · kind: Represents settlement of performance units and associated distribution-equivalent rights 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 26, 2019.

SEC source: 0001209191-19-009073 · doc4.xml · nonDerivative · entry 1

Putman Luke Stevens · CIK 0001337171 · SVP, GC, and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 270,411

F1 · kind: Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 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, 2020, January 7, 2021, and January 7, 2022, 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.