144 0001702312 XXXXXXXX LIVE 0001789832 Hess Midstream LP 001-39163 1501 MCKINNEY STREET HOUSTON TX 77010 2125368039 Gatling John A. Former Officer Class A Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

8087 270822.31 129392378 11/07/2025 NYSE Class A 09/26/2025 Restricted Stock Vesting Issuer N 8087 09/26/2025 Compensation N John A Gatling

1501 McKinney Street Houston TX 77010

Class A 08/12/2025 43913 1827323.20 Gatling Family Trust

1501 McKinney Street Houston TX 77010

Class A 08/12/2025 18543 770210.42 John A Gatling

1501 McKinney Street Houston TX 77010

Class A 10/08/2025 5817 191600.34 The sale on 08/12/2025 took place in the Gatling Family Trust of which John A. Gatling is a trustee. 11/07/2025 /s/ Gerardo Ibarra-Munoz, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for John A. Gatling