Osisko Development Completes 13,684m Infill Drilling Program at Cariboo Gold Project

Osisko Development Corp. has completed its 13,000-meter infill drilling program at the Cariboo Gold Project's Lowhee Zone in British Columbia, with final results totaling 13,684 meters. The company reported significant high-grade gold intercepts including 44.68 g/t gold over 1.5 meters (including 133.62 g/t over 0.5 meters) and 25.78 g/t gold over 2.5 meters. Additionally, 2,995 meters of near-mine exploration drilling was completed, with highlights including 31.64 g/t gold over 2.0 meters. The drilling results will be incorporated into an updated localized block model, with final results anticipated in Q2 2026. The Cariboo Gold Project is a permitted, 100%-owned feasibility-stage project with probable mineral reserves of 2.071 million ounces of contained gold. The infill program provides better understanding of vein corridor geometries and local variability, which will help refine production designs and sequencing for the Lowhee deposit.