Mr. Daniel Sampieri reports

CAPSTONE COPPER ANNOUNCES 2025 ANNUAL GENERAL MEETING RESULTS

Capstone Copper Corp. has released the voting results from its 2025 annual general meeting held May 2, 2025, in Vancouver, B.C. A total of 594,082,529 common shares were voted at the meeting, representing 77.96 per cent of the votes attached to all outstanding common shares. Shareholders voted in favour of all items of business before the meeting, as follows.

Detailed voting results for the 2025 AGM are available on SEDAR+.

About Capstone Copper Corp.

Capstone Copper is an Americas-focused copper mining company headquartered in Vancouver, Canada. It owns and operates the Pinto Valley copper mine located in Arizona, United States, the Cozamin copper-silver mine located in Zacatecas, Mexico, the Mantos Blancos copper-silver mine located in the Antofagasta region, Chile, and 70 per cent of the Mantoverde copper-gold mine, located in the Atacama region, Chile. In addition, it owns the fully permitted Santo Domingo copper-iron-gold project, located approximately 30 kilometres northeast of Mantoverde in the Atacama region, Chile, as well as a portfolio of exploration properties in the Americas.

Capstone Copper's strategy is to unlock transformational copper production growth while executing on cost and operational improvements through innovation, optimization, and safe and responsible production throughout its portfolio of assets. The company focuses on profitability and disciplined capital allocation to surface stakeholder value. It is committed to creating a positive impact in the lives of its people and local communities, while delivering compelling returns to investors by responsibly producing copper to meet the world's growing needs.