Osisko Metals (OM) Investor presentation summary

Strategic positioning and leadership

• Positioned as a leading copper development company in Canada with a strong track record of shareholder returns and experienced management team.

• Backed by major institutional and strategic investors, holding approximately 80% of shares outstanding.

• Strong balance sheet with $200M fully diluted and recent $32.5M private placement financing.

Gaspé Copper project overview

• One of North America's largest undeveloped copper projects, located in Québec with existing infrastructure and a deep sea port nearby.

• Current in-pit resource: 824 Mt indicated at 0.27% Cu and 670 Mt inferred at 0.30% Cu, with significant molybdenum and silver credits.

• 2025 drill program completed 118,000 metres, aiming to upgrade resources and test expansion potential.

Resource and exploration highlights

• Updated mineral resource estimate effective November 2024, with 824 Mt indicated at 0.34% CuEq and 670 Mt inferred at 0.39% CuEq.

• Drill intercepts include 852m @ 0.70% Cu, 2.92 g/t Ag, and 0.062% Mo, highlighting high-grade zones and expansion potential.

• Historical and recent drilling confirm large-scale, long-life deposit with open potential at depth.