Osisko Development Provides Infill Drilling Update on Its 13,000-m Program at Cariboo Gold Project; Intercepts Include 8.56 g/t Au Over 8.5m from 60.5m Depth, and 130.32 g/t Au Over 0.5m from 83.5m Depth

Core Insights - Osisko Development Corp. has announced new infill drilling results from its ongoing 13,000-meter program at the Cariboo Gold Project, with a total of approximately 10,000 meters completed, representing about 72% of the planned drilling [2][3]. Drilling Program Overview - The infill drilling program commenced in August 2025 and is focused on the Lowhee Zone of the Cariboo Gold Project, which is 100% owned by the company [2]. - A total of 5,983 meters of drilling has been completed, with 3,704 meters reported in this release, indicating that approximately 44% of the planned drilling has been executed [5]. Assay Results - The assay results include significant gold grades, such as 8.56 grams per tonne (g/t) over 8.5 meters from a depth of 60.5 meters, and 16.95 g/t over 4.0 meters from 80 meters depth [5][6]. - The results are consistent with modelled reserve stopes and indicate potential for additional mineralization in previously unexplored areas [5][9]. Future Implications - The ongoing infill drilling is expected to refine production designs and sequencing, with the program set to conclude in the first quarter of 2026 [4][5]. - The data gathered will inform an updated local block model and may lead to the addition of new planned reserve stopes based on the final estimation process [9][10].