Exhibit 99.1 HESS MIDSTREAM LP HESS MIDSTREAM LP REPORTS ESTIMATED RESULTS FOR THE SECOND QUARTER OF 2025 Second Quarter 2025 Highlights: Guidance: HOUSTON, July 30, 2025—Hess Midstream LP (NYSE: HESM) ("Hess Midstream" or the "Company") today reported second quarter 2025 net income of $179.7 million compared with net income of$160.3 million for the second quarter of 2024. After deduction for noncontrolling interests, net income attributable to Hess Midstream was $90.3 million, or$0.74 basic earnings per ...