Capstone Copper Files Technical Report for Santo Domingo Project

Capstone Copper Corp.

VANCOUVER, British Columbia–BUSINESS WIRE–

Capstone Copper Corp. (“Capstone” or the “Company”) (TSX:CS) (ASX:CSC) has today filed on SEDAR+ a National Instrument 43-101 (“NI 43-101”) compliant technical report titled “Santo Domingo Project NI 43-101 Technical Report and Feasibility Study Update” for the updated Santo Domingo feasibility study announced on July 31, 2024.

The Technical Report was prepared in accordance with Canadian Securities Administrator’s NI 43-101 Standards of Disclosure for Mineral Projects; and is available under the Company’s profile on SEDAR+ at www.sedarplus.ca and the Company’s web site at www.capstonecopper.com.

About Capstone Copper Corp.

Capstone Copper Corp. is an Americas-focused copper mining company headquartered in Vancouver, Canada. We own and operate 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 70% of the Mantoverde copper-gold mine, located in the Atacama region, Chile. In addition, we own 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 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.

/Public Release.