EXHIBIT 99.1 Operating, Financial and Corporate Updates: Tintic Project – Utah, U.S.A. (100%-owned) 2,090 ounces of gold sold by the Company from operating activities in the fourth quarter (10,743 ounces of gold sold in 2023), comprising of: 1,622 ounces of gold sold from the Trixie test mine ("Trixie") located within the Company's wider Tintic Project (4,959 ounces of gold sold in 2023); 468 ounces of gold sold from the Cariboo Gold Project ("Cariboo" or the "Cariboo Gold Project") by processing stockpiles ...

EXHIBIT 99.1 Osisko Development Reports 2022 Drill Results at Trixie, Including: 28.72 g/t Au and 404 g/t Ag over 6.25 m and 27.26 g/t Au and 96.98 g/t Ag over 4.57 m MONTREAL, April 03, 2023 (GLOBE NEWSWIRE) -- Osisko Development Corp. (NYSE: ODV, TSXV: ODV) ("Osisko Development" or the "Company") is pleased to announce underground diamond drilling ("DD") results as part of its ongoing exploration program at its 100%-owned Trixie test mine ("Trixie"), within the Company's wider Tintic Project ("Tintic" or ...

576,000 oz of Au and 1.37 M oz Ag Indicated and 544,000 oz Au and 1.76 M oz of Ag Inferred MONTREAL, June 30, 2022 (GLOBE NEWSWIRE) -- Osisko Development Corp. ("Osisko Development" or the "Company") (ODV TSX.V & NYSE) is pleased to announce an initial open pit resource estimate for the Sapuchi, Golfo de Oro, California, High Life and Calvario Deposits at its San Antonio Project ("San Antonio" or the "Project") in Sonora State, Mexico. San Antonio Project Mineral Resource The MRE incorporates five deposits, ...