Capstone Copper Corp. (“Capstone” or the “Company”) (TSX:CS) (ASX:CSC) will release its 2026 third quarter (“Q3 2026”) results on Thursday, October 29, 2026, after market close. The announcement will be followed by an investor conference call the same day at 5:00 pm Eastern Time / 2:00 pm Pacific Time (Friday, October 30, 2026, 8:00 am Australian Eastern Time).

An audio replay of the conference call will be available until November 5, 2026.

After the replay expiration, an audio file will be available on Capstone’s website at Capstone Copper - Events and Presentations. Further information is available at www.capstonecopper.com.

ABOUT CAPSTONE COPPER CORP.

Capstone Copper Corp. is an Americas-focused copper mining company headquartered in Vancouver, Canada. Capstone’s operating portfolio of assets includes the Pinto Valley copper mine located in Arizona, USA, the Cozamin copper-silver mine located in Zacatecas, Mexico, the Mantos Blancos copper-silver mine located in the Antofagasta region, Chile, and the Mantoverde copper-gold mine, located in the Atacama region, Chile. Capstone’s growth pipeline includes the fully permitted Santo Domingo copper-iron-gold project, located approximately 35 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 our portfolio of assets. We focus on profitability and disciplined capital allocation to surface stakeholder value. We are committed to creating a positive impact in the lives of our people and local communities, while delivering compelling returns to investors by responsibly producing copper to meet the world’s growing needs.

Further information is available at www.capstonecopper.com

View source version on businesswire.com: https://www.businesswire.com/news/home/20261005298892/en/