Capstone Copper (CS) Corporate presentation summary

Strategic positioning and growth outlook

• Operates five long-life copper assets in stable jurisdictions across the Americas, targeting near-term copper production growth to ~400ktpa with declining unit costs.

• Maintains a strong balance sheet with over $1B in liquidity and disciplined capital allocation, supporting future expansion.

• Focuses on responsible production, community impact, and sustainability, with an experienced management team.

Asset portfolio and operational performance

• Mantoverde achieved nameplate throughput within four quarters post-construction, outperforming industry averages.

• Mantos Blancos successfully debottlenecked, increasing throughput and planning a Phase II expansion to ~27ktpd.

• Pinto Valley and Cozamin mines have extended mine lives and ongoing district-scale exploration and optimization.

• Santo Domingo project is fully permitted, with a 19-year mine life and robust production profile, targeting 106ktpa copper and 3.7Mtpa iron ore.

Financial strength and capital management

• Net debt stands at $726M with a net debt/EBITDA ratio of 0.9x and available liquidity of $1.1B as of September 30, 2025.

• Maintains long-dated debt maturities and targets net leverage below 1.0x ahead of major capital projects.

• 2025 guidance: consolidated copper production of 220–255kt at C1 cash costs of $2.20–$2.50/lb.