Exhibit 99.1 HESS MIDSTREAM LP HESS MIDSTREAM LP REPORTS ESTIMATED RESULTS FOR THE THIRD QUARTER OF 2025 Third Quarter 2025 Highlights: Guidance: HOUSTON, November 3, 2025—Hess Midstream LP (NYSE: HESM) ("Hess Midstream" or the "Company") today reported third quarter 2025 net income of $175.5 million compared with net income of$164.7 million for the third quarter of 2024. After deduction for noncontrolling interests, net income attributable to Hess Midstream was $97.7 million, or$0.75 basic earnings per C ...