Company: BSM
Filing Date: 2025-04-30
Form Type: DEF 14A
Source: 0001193125-25-107202
Chunk: 53

Company: Black Stone Minerals, L.P.
Filing Date: 2025-04-30
Form: DEF 14A
Chunk 53
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 payment of $601,775; |

| • |     | For a period of up to 12 months (or until Mr. Kiefer is eligible to be covered under another employer’s group health plan), reimbursement for the cost of COBRA continuation coverage; |

| • |     | Accelerated vesting of 3,628 LTI Restricted Units, which represents a pro-rated portion of Mr. Kiefer’s then-outstanding LTI Restricted Units; |

| • |     | Accelerated vesting of 12,179 LTI Performance Units, which represents a pro-rated portion of Mr. Kiefer’s then-outstanding LTI Performance Units based on actual performance as of May 28, 2024; |

| • |     | Settlement of 2,253 common units, calculated based upon the distributions paid to our unitholders with respect to each outstanding common unit during the applicable performance period multiplied by the number of LTI Performance Units that accelerated in connection with Mr. Kiefer’s termination of employment; and |

| • |     | Satisfaction of the service requirement with respect to 50,893 LTI Performance Units subject to the Aspirational Award granted to Mr. Kiefer in 2022. |

Mr. Kiefer also entered into a post-separation consulting agreement in connection with the Kiefer Separation Agreement, pursuant to which he received a $33,333 consulting fee per complete calendar month between May 28, 2024 and November 30, 2024. Mr. Kiefer remains subject to the confidentiality, non-competition, non-solicitationand non-disparagementcovenants set forth in his severance agreement. 43

#### The table below quantifies the value of the payments and benefits received or to be received by Mr. Kiefer pursuant to the Kiefer Separation Agreement.Type of BenefitsSeverancePayments ($)Cash Severance601,775Equity Acceleration(1)1,035,851DER True Up Payment Value(2)34,989Continued Medical Coverage(3)33,670TOTAL1,706,285(1)The amount reported in this row is calculated by multiplying the number of LTI Performance Units and LTI Restricted Units that accelerated and became vested and the number of Aspirational Performance Awards for which the service requirement was met, in each case, in connection with Mr. Kiefer’s termination of employment, by $15.53, the closing price of our common