Osisko Development Provides Infill Drilling Update on Its 13,000-Meter Lowhee Program at Cariboo Gold Project; Intercepts Include 45.24 G/T Gold Over 3.0 Meters, Including 233.92 G/T Gold Over 0.5 Meters

HIGHLIGHTS

MONTREAL, Oct. 06, 2025 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") is pleased to announce 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 ("Cariboo" or the "Project"), located in central British Columbia ("B.C."), Canada. The first three fans of this program consisted of approximately 2,279 meters ("m") of underground infill drilling.

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