Osisko Development announces infill drilling results from Cariboo Gold

Osisko Development (ODV) announced new infill drilling results from its ongoing 13,000-meter program on 10 meter drill spacing that commenced in August 2025 in the Lowhee Zone of the Company’s permitted, 100%-owned Cariboo Gold Project, located in central British Columbia, Canada. The six drill hole fans reported herein comprise an additional ~3,704 meters of underground infill drilling, bringing the total tally of drilling with full results to 5,983 m, or ~44% of the planned total. In total, an aggregate of approximately 10,000 meters, representing ~72% of the total planned drill meters, has now been completed. Full assay results and associated quality assurance and quality control reviews are pending for the remaining holes not reported herein. Chris Lodder, President, stated, “We continue to see good alignment of ongoing infill drilling results with our modelled vein corridors and planned stope shapes, along with occurrences of upside mineralized zones outside current reserve outlines. This tighter drill spacing sharpens our understanding of vein corridor spatial geometries and local variability, while reinforcing the importance of infill drilling in underexplored zones. As this work concludes in the first quarter of 2026, the resulting information is expected to help refine production designs and sequencing.”