Osisko Development Corp.

Osisko Development Corp. is a North American gold development company focused on advancing past-producing mining camps with district-scale potential. The company's primary mission is to transition into an intermediate gold producer by developing its portfolio of precious metals resource properties. Headquartered in Montreal, Quebec, Canada, Osisko Development aims to leverage historical mining data, existing infrastructure, and access to skilled labor in mining-friendly jurisdictions.

The company's key assets include the fully permitted, 100%-owned Cariboo Gold Project in central British Columbia, Canada, and the Tintic Project in the historic East Tintic mining district in Utah, U.S.A. While the San Antonio Gold Project in Mexico was previously part of its portfolio, it was divested in late 2025. Osisko Development focuses on brownfield exploration potential and developing attractive, long-life, socially and environmentally sustainable mining assets.

Led by Founder, Executive Chairman, and CEO Sean Roosen, who has a proven track record in the mining industry including the development of the Canadian Malartic mine, Osisko Development is actively progressing its projects. The Cariboo Gold Project received its key permits in Q4 2024 and is targeting first gold production in Q3 2026 or H2 2027. The company secured significant financing, including a US$125 million bought deal in January 2026, and reported approximately $422.3 million in cash at the end of Q4 2025, positioning it to transition from a developer to a gold producer.