SCHEDULE 13D/A 0001702361 XXXXXXXX LIVE 20 Class A Shares 05/05/2025 false 0001789832 428103105 Hess Midstream LP

1501 MCKINNEY STREET HOUSTON TX 77010

Timothy B. Goodell (212) 997-8500 Hess Corporation 1185 Avenue of the Americas New York NY 10036 0001797014 N Hess Midstream GP LP OO N DE 0 898000 0 898000 898000 N 0.8 PN Y Hess Midstream GP LLC OO N DE 0 898000 0 898000 898000 N 0.8 OO Delaware Limited Liability Company Y Hess Infrastructure Partners GP LLC OO N DE 0 898000 0 898000 898000 N 0.8 OO Delaware Limited Liability Company 0001702361 N Hess Investments North Dakota LLC OO N DE 0 81916146 0 81916146 81916146 N 41.4 OO Delaware Limited Liability Company Y Hess Corporation OO N DE 0 81916146 0 81916146 81916146 N 41.4 CO Class A Shares Hess Midstream LP 1501 MCKINNEY STREET HOUSTON TX 77010 This Amendment No. 20 to Schedule 13D amends and supplements the statement on Schedule 13D originally filed with the United States Securities and Exchange Commission on December 17, 2019 (as amended, the "Statement"), relating to the Class A Shares representing limited partner interests (the "Class A Shares") of Hess Midstream LP, a Delaware limited partnership (the "Issuer"). Capitalized terms used herein without definition shall have the meaning set forth in the Statement. Item 4 of the Statement is hereby amended and supplemented as follows: May 2025 Repurchase Agreement On May 5, 2025, the Issuer, HESM Opco, Hess Investments and Blue Holding entered into a Unit Repurchase Agreement (the "May 2025 Repurchase Agreement"), pursuant to which HESM Opco agreed to purchase from Hess Investments and Blue Holding 2,038,956 and 3,112,886 Opco Class B Units, respectively (the "Repurchased Units"), for an aggregate purchase price of approximately $190 million, or $36.88 per unit (the "May 2025 Repurchase Transaction"). Pursuant to the terms of the May 2025 Repurchase Agreement, immediately following the closing of the May 2025 Repurchase Transaction, HESM Opco will cancel the Repurchased Units, and the Issuer will cancel, for no consideration, an equal number of Class B Shares held by Hess Investments and Blue Holding, respectively, in accordance with Section 5.5(e) of the Amended Opco Partnership Agreement. The above description of the May 2025 Repurchase Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of such agreement, which is filed as an exhibit hereto and incorporated herein by reference. Item 6 of the Statement is hereby amended and supplemented as follows: Item 4 above summarizes certain provisions of the May 2025 Repurchase Agreement and is incorporated herein by reference. A copy of this agreement is attached as an exhibit hereto and incorporated herein by reference. Except as set forth herein, none of the Reporting Persons or Related Persons has any contracts, arrangements, understandings or relationships (legal or otherwise) with any person with respect to any securities of the Issuer, including, but not limited to, any contracts, arrangements, understandings or relationships concerning the transfer or voting of such securities, finder's fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or losses, or the giving or withholding of proxies. Item 7 of the Statement is hereby amended and supplemented as follows: Exhibit 23: Unit Repurchase Agreement, dated as of May 5, 2025, by and among Hess Midstream Operations LP, Hess Midstream LP, Hess Investments North Dakota LLC and GIP II Blue Holding, L.P. (incorporated by reference to Exhibit 10.1 to the Issuer's Current Report on Form 8-K filed on May 7, 2025) Hess Midstream GP LP By: Hess Midstream GP LLC, its general partner, /s/ Jonathan C. Stein 05/07/2025 Hess Midstream GP LLC /s/ Jonathan C. Stein 05/07/2025 Hess Infrastructure Partners GP LLC /s/ Jonathan C. Stein 05/07/2025 Hess Investments North Dakota LLC /s/ Jonathan C. Stein 05/07/2025 Hess Corporation /s/ John P. Rielly 05/07/2025