Capstone Copper (CS) investor relations material

Strategic positioning and growth outlook

• Operations span top-tier jurisdictions in the Americas, with five producing and development-stage assets in Chile, the US, and Mexico.

• Targeting transformational copper production growth of ~70% to 375ktpa, with a ~30% decrease in cash costs, driven by Mantoverde Optimized and Santo Domingo projects.

• Over $1B in liquidity as of March 31, 2026, supporting a robust pipeline of organic growth and expansion projects.

• Focused on disciplined capital allocation, maintaining net leverage below 1.0x and prioritizing high-ROIC projects.

• Leadership team with over 150 years of combined mine-building and operating experience.

Asset portfolio and operational performance

• Mantoverde (70%): Achieved nameplate throughput, progressing brownfield expansion to 45ktpd; 2026 guidance of 64-74kt Cu at $1.25–$1.55/lb C1 cash cost.

• Mantos Blancos (100%): 2026 guidance of 38-44kt Cu at $2.85–$3.15/lb; Phase II expansion study underway to increase mill capacity to 27ktpd.

• Pinto Valley (100%): 2026 guidance of 42-48kt Cu at $3.00–$3.30/lb; district growth study evaluating resource inclusion and mine-life extension.

• Cozamin (100%): 2026 guidance of 21-24kt Cu at $1.55–$1.85/lb; strong by-product credits and ongoing exploration for resource growth.

• Santo Domingo (75%): Fully permitted, shovel-ready, 19-year mine life, 106ktpa Cu average (first 7 years), $0.28/lb C1 cash cost (by-product basis); FID expected in Q4 2026.

Financial performance and capital structure

• Q1 2026 consolidated copper production of 47,960 tonnes at $2.66/lb C1 cash cost; adjusted EBITDA of $329M and net debt of $738M.

• 2026 capital expenditures guidance of $720M, with $270M allocated to Mantoverde and $225M to Santo Domingo.

• Simplified debt structure with $1.8B in total facilities, long-dated maturities, and $652M available liquidity as of March 31, 2026.

• Projected annual EBITDA of ~$3B at full run-rate production from Mantoverde Optimized and Santo Domingo.