Black Stone Minerals LP Files Form 144 for Security Sale

TL;DR

BSM insider plans to sell stock. Watch for supply changes.

AI Summary

On April 6, 2026, Black Stone Minerals, L.P. filed a Form 144, indicating a proposed sale of securities. The filing was made by Luke Stevens Putman, who is listed as a reporting person. The company's principal business is Crude Petroleum & Natural Gas.

Why It Matters

This filing signals a potential upcoming sale of securities by an insider, which could impact the stock's supply and demand dynamics.

Risk Assessment

Risk Level: medium — Form 144 filings indicate potential insider selling, which can introduce selling pressure on the stock.

Key Players & Entities

• Black Stone Minerals, L.P. (company) — Subject of the filing
• Luke Stevens Putman (person) — Reporting person
• 0001950047-26-003273 (dollar_amount) — SEC Accession Number
• 2026-04-06 (dollar_amount) — Filing Date

FAQ

Filing Documents

• primary_doc.html (144)
• primary_doc.xml (144) — 4KB
• 0001950047-26-003273.txt ( ) — 6KB

From the Filing

Form 144 Filer Information UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933 FORM 144 144: Filer Information Filer CIK 0001337171 Filer CCC XXXXXXXX Is this a LIVE or TEST Filing? LIVE TEST Submission Contact Information Name Phone E-Mail Address 144: Issuer Information Name of Issuer Black Stone Minerals, L.P. SEC File Number 001-37362 Address of Issuer 1001 fANNIN, SUITE 2020, HOUSTON TEXAS 77002 Phone 7136580647 Name of Person for Whose Account the Securities are To Be Sold LUKE STEVENS PUTMAN See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice. Relationship to Issuer Officer 144: Securities Information Title of the Class of Securities To Be Sold Name and Address of the Broker Number of Shares or Other Units To Be Sold Aggregate Market Value Number of Shares or Other Units Outstanding Approximate Date of Sale Name the Securities Exchange Common Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York � NY � 10004 29386 430504.90 212333793 04/06/2026 NYSE Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor: 144: Securities To Be Sold Title of the Class Date you Acquired Nature of Acquisition Transaction Name of Person from Whom Acquired Is this a Gift? Date Donor Acquired Amount of Securities Acquired Date of Payment Nature of Payment * Common 01/07/2026 RSA / PSU Issuer 29386 01/07/2026 N/A * If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid. Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold. 144: Securities Sold During The Past 3 Months Name and Address of Seller Title of Securities Sold Date of Sale Amount of Securities Sold Gross Proceeds 10b5-1 Sales for LUKE STEVENS PUTMAN 1001 fANNIN, SUITE 2020, HOUSTON � TX � 77002 Common 03/05/2026 30276 461584.87 144: Remarks and Signature Remarks The securities to be sold were acquired upon the vesting of restricted stock awards and performance stock units during the period of 1/7/2026 through 02/23/2026. Date of Notice 04/06/2026 Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1 12/04/2025 ATTENTION: The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date. Signature /s/ Luke Stevens Putman ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)