X0407 4 2023-04-06 0 0001621434 Black Stone Minerals, L.P. BSM 0001639921 Stuart Alexander D. 1001 FANNIN STREET, SUITE 2020 HOUSTON TX 77002 1 0 0 0 0 Common units representing limited partner interests 2023-04-06 4 A 0 1434 15.69 A 153329 D Common units representing limited partner interests 1251634 I By RDS Investments, L.P. Common units representing limited partner interests 4786664 I By North Star Oil & Gas Common units representing limited partner interests 2112711 I By Topsfield Energy Ltd. Common units representing limited partner interests 6687 I By Barbara E Stuart GST Exempt Trust fbo Alexander D Stuart Common units representing limited partner interests 0 I By GRAT Common units representing limited partner interests 180775 I By Robert D. Stuart, Jr. 1996 Marital Trust Common units representing limited partner interests 173316 I By GRAT 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. Prior to the date of this report, this grantor retained annuity trust granted by the Reporting Person terminated, and the remaining 446,555 Issuer common units were transferred to the beneficiaries of the trust in a non-reportable transaction. Because this trust has been terminated, it will not be included on future reports. /s/ Steve Putman, attorney-in-fact for Alexander D. Stuart 2023-04-07