X0306 4 2021-02-23 0 0001621434 Black Stone Minerals, L.P. BSM 0001319960 Carter Thomas L Jr 1001 FANNIN STREET, SUITE 2020 HOUSTON TX 77002 1 1 0 0 CEO and Chairman Common units representing limited partner interests 2021-02-23 4 A 0 216135 0.00 A 2033322 D Common units representing limited partner interests 2021-02-23 4 F 0 85050 9.32 D 1948272 D Common units representing limited partner interests 37741 I By Georgia Elizabeth Carter 1995 Trust Common units representing limited partner interests 37741 I By Katherine Ross Carter 1995 Trust Common units representing limited partner interests 37742 I By Molly Leachman Carter 1995 Trust Common units representing limited partner interests 13141 I By Fowler Thomas Carter 1995 Trust Common units representing limited partner interests 11481503 I By Carter2221, Ltd. Common units representing limited partner interests 181763 I By spouse 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. /s/ Steve Putman, attorney-in-fact for Thomas L. Carter, Jr. 2021-02-25