Osisko Metals Gaspé Copper Project Intersects 645 Metres Averaging 0.28% Cu

MONTREAL, July 22, 2025 (GLOBE NEWSWIRE) — Osisko Metals Incorporated (the “Company” or “Osisko Metals”) (TSX-V: OM; OTCQX: OMZNF; FRANKFURT: 0B51) is pleased to announce new drill results from the Gaspé Copper Project, located in the Gaspé Peninsula of Eastern Québec.

Osisko Metals Chief Executive Officer Robert Wares commented: “These new results underscore the overall large-scale potential of mineralization at Gaspé Copper, with drill hole 1082 cutting 853 metres of continuous mineralization, including the bottom 424 metres being located immediately below and outside the 2024 MRE model. Furthermore, drill hole 1088 intersected new mineralization 80 metres southwest of the 2024 MRE model, emphasizing the excellent potential for increasing the size of the known deposit at depth and to the south.”