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.

• Over $11 billion in market capitalization value created since 2003, with significant wealth generated from major Quebec mining projects.

• Institutions and strategic investors, including Agnico Eagle, Hudbay, Franco-Nevada, CDPQ, Glencore, and Gold Fields, own approximately 80% of shares.

Gaspé Copper project highlights

• Gaspé Copper is one of North America's largest undeveloped copper projects, with infrastructure such as a deep sea port, power substation, and paved highway in place.

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

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

• Metallurgical tests show 92–94% copper recoveries and clean concentrate production; offtake agreement in place with Glencore.

Project economics and development timeline

• Envisioned as a large-scale, long-life mine with a low strip ratio of 1.5 and annual production potential exceeding 140,000 tonnes of copper.

• Six-year timeline to potential mine start-up: updated resource estimate and PEA in 2026, feasibility study in 2027, permitting and financing through 2029–2031, and production start in 2032.

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