Mr. Daniel Sampieri reports

CAPSTONE COPPER TO RELEASE FIRST QUARTER RESULTS ON MAY 1, 2025

Capstone Copper Corp. will release its first quarter 2025 results on Thursday, May 1, 2025, after market close. The announcement will be followed by an investor conference call the same day at 5 p.m. Eastern Time/2 p.m. Pacific Time (Friday, May 2, 2025, at 7 a.m. Australian Eastern Standard Time).

An audio replay of the conference call will be available until May 8, 2025.

Replay dial-in numbers

Toronto:  1-289-819-1450

North America toll-free:  1-888-660-6345

Code:  89798 followed by the number sign

After the replay expiration, an audio file will be available on Capstone's website at events and presentations.

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. It 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.