Exhibit 99.1 Granite Ridge Resources, Inc. Reports Second Quarter 2025 Results, Declares Quarterly Cash Dividend and Provides Updated Outlook for 2025 Dallas, Texas, August 7, 2025 – Granite Ridge Resources, Inc. ("Granite Ridge" or the "Company") (NYSE: GRNT) today reported financial and operating results for the second quarter of 2025. Second Quarter 2025 Highlights "In the second quarter, we increased production by 37% year-over-year to 31,576 Boe per day, driven by a 46% rise in oil production and a 28% ...