Mr. John MacKenzie reports

CAPSTONE COPPER ANNOUNCES INCLUSION IN THE S&P/ASX 200 INDEX

The CHESS depositary interests (CDIs) of the company will be added to the Standard & Poors (S&P)/ASX 200 Index by the S&P Dow Jones effective prior to ASX (Australian Securities Exchange) market opening on March 24, 2025.

John MacKenzie, Capstone's chief executive officer, commented: "We are very pleased to have been included in the S&P/ASX 200 Index as part of the March rebalance. Inclusion in this index recognizes the continued success of our secondary listing in Australia after its commencement of trading last year, highlighted by our growing CDI market capitalization and robust trading liquidity on the ASX. We look forward to continuing to engage with investment analysts, institutional fund managers and investors in the Asia Pacific region."

The S&P/ASX 200 is recognized as the institutional investable benchmark in Australia. The index measures up to 200 of Australia's largest securities by float-adjusted market capitalization. Representative, liquid and tradable, it is widely considered Australia's pre-eminent benchmark index.

Capstone's CDIs commenced trading on the ASX under the ticker symbol CSC on Feb. 2, 2024. Each CDI represents one fully paid share of common stock of Capstone Copper.

About Capstone Copper Corp.

Capstone Copper is an Americas focused copper mining company headquartered in Vancouver, Canada. The company 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, the company 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. Capstone Copper focuses on profitability and disciplined capital allocation to surface stakeholder value. The company is committed to creating a positive impact in the lives of its people and local communities while delivering compelling returns to investors by sustainably producing copper to meet the world's growing needs.

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