SCHEDULE 13G/A 0000769993-24-000378 0001229262 XXXXXXXX LIVE 1 Class A shares representing limited partner interests 09/30/2025 0001789832 HESS MIDSTREAM LP 428103105 1501 MCKINNEY STREET HOUSTON X1 77010 Rule 13d-1(b) Goldman Sachs Asset Management, L.P. DE 0.00 8333429.00 0.00 8333429.00 8333429.00 6.4 IA HESS MIDSTREAM LP 1501 MCKINNEY STREET, HOUSTON, X1, 77010 GOLDMAN SACHS ASSET MANAGEMENT Goldman Sachs Asset Management 200 West Street New York, NY 10282 GOLDMAN SACHS ASSET MANAGEMENT, L.P. - Delaware N IA See the response(s) to Item 9 on the attached cover page(s). See the response(s)to Item 11 on the attached cover page(s). See the response(s) to Item 5 on the attached cover page(s). See the response(s) to Item 6 on the attached cover page(s). See the response(s) to Item 7 on the attached cover page(s). See the response(s) to Item 8 on the attached cover page(s). Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. EXHIBIT (99.1) JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, the undersigned agree to the joint filing of a Statement on Schedule 13G (including any and all amendments thereto) with respect to the Class A shares representing limited partner interests , par value $ per share, of HESS MIDSTREAM LP and further agree to the filing of this agreement as an Exhibit thereto. In addition, each party to this Agreement expressly authorizes each other party to this Agreement to file on its behalf any and all amendments to such Statement on Schedule 13G. Date: 10/08/2025 GOLDMAN SACHS ASSET MANAGEMENT, L.P. By:/s/ Veronica Mupazviriwo ---------------------------------------- Name: Veronica Mupazviriwo Title: Attorney-in-fact Goldman Sachs Asset Management, L.P. Name: Veronica Mupazviriwo 10/08/2025