Osisko Gold Announces Amendment to US$450 Million Appian Credit Facility and Satisfaction of Key Technical Conditions Precedent Following Successful Completion of the Lowhee Infill Drill Program at the Cariboo Gold Project

TORONTO, Aug. 20, 2026 (GLOBE NEWSWIRE) -- Osisko Gold Group Inc. (NYSE: OGG, TSXV: OGG) ("Osisko Gold" or the "Company") is pleased to announce that it has entered into an amended and restated credit agreement (the "Amendment") with funds advised by Appian Capital Advisory Limited ("Appian") in respect of its US$450 million senior secured project loan credit facility dated July 21, 2025 (the "Credit Facility"). The Credit Facility was entered into by the Company's wholly owned subsidiary, Barkerville Gold Mines Ltd. ("Barkerville"), to finance the development and construction of the Company's 100%-owned, fully permitted Cariboo Gold Project (the "Project").