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

900 Salem Street Smithfield RI 02917

62458 2597533.62 131084592 08/12/2025 NYSE Class A 03/16/2018 Open Market Purchase Issuer N 5100 03/16/2018 Cash Class A 12/26/2018 Open Market Purchase Issuer N 12000 12/26/2018 Cash Class A 08/12/2020 Dividend Reinvestment Issuer N 754 08/12/2020 Cash Class A 02/10/2021 Dividend Reinvestment Issuer N 690 02/10/2021 Cash Class A 04/05/2018 Restricted Stock Vesting Issuer N 1449 04/05/2018 Compensation Class A 04/05/2019 Restricted Stock Vesting Issuer N 1449 04/05/2019 Compensation Class A 03/08/2020 Restricted Stock Vesting Issuer N 5658 03/08/2020 Compensation Class A 04/05/2020 Restricted Stock Vesting Issuer N 1450 04/05/2020 Compensation Class A 08/12/2020 Dividend Reinvestment Issuer N 331 08/12/2020 Cash Class A 02/10/2021 Dividend Reinvestment Issuer N 302 02/10/2021 Cash Class A 03/13/2021 Restricted Stock Vesting Issuer N 5886 03/13/2021 Compensation Class A 03/13/2022 Restricted Stock Vesting Issuer N 5328 03/13/2022 Compensation Class A 03/08/2023 Restricted Stock Vesting Issuer N 4694 03/08/2023 Compensation Class A 03/13/2023 Restricted Stock Vesting Issuer N 4719 03/13/2023 Compensation Class A 03/08/2024 Restricted Stock Vesting Issuer N 6923 03/08/2024 Compensation Class A 03/08/2025 Restricted Stock Vesting Issuer N 5725 03/08/2025 Compensation Y Part of the sale today includes 18,544 shares that were sold from the Gatling Family Trust of which John A. Gatling is a trustee. 08/12/2025 /s/ Joshua Schmitt, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for John A. Gatling.