Osisko Development (ODV) Corporate presentation summary

Strategic vision and project advancement

• Advancing the Cariboo Gold Project in British Columbia, a fully permitted, shovel-ready, large-scale underground gold mine with strong government and Indigenous support.

• Focused on scalable, district-scale assets with significant exploration upside, including the historic Tintic Project in Utah.

• Led by an experienced management team with a track record of successful mine development and stakeholder engagement.

• Emphasizes responsible mining, environmental stewardship, and strong community and Indigenous partnerships.

Cariboo Gold Project highlights

• 100% ownership of >185,000 ha property with over 83 km of mineralized trends and ~700,000 meters drilled since 2015.

• Feasibility Study (2025) outlines a 10-year mine life, 190 koz/year LOM average gold production, and US$1,157/oz AISC.

• After-tax NPV5% of C$943M and IRR of 22.1% at US$2,400/oz gold; significant upside at higher gold prices.

• Initial capex of C$881M, with robust infrastructure and year-round access.

• Permitting completed in 2024, with construction and infill drilling underway and first gold production targeted for 2028.

Financing and capital structure

• Over US$885M raised since securing project financing, including US$450M facility from Appian Capital and multiple equity financings.

• Market capitalization of C$1.4B (April 2026), with C$422M in cash and equivalents and C$145M in long-term debt.

• Institutional investors hold 51% of shares, with strong analyst coverage and insider alignment.