Mr. Daniel Sampieri reports

CAPSTONE COPPER ANNOUNCES PRICING AND UPSIZING OF SENIOR NOTES OFFERING

Capstone Copper Corp. has completed the pricing of its offering of $600-million aggregate principal amount of 6.750 per cent senior notes due 2033. The offering was upsized from the previously announced $500-million in aggregate principal amount. The issue price of the notes is 100.000 per cent.

Interest on the notes will accrue from the issue date at a rate of 6.750 per cent per annum and will be payable semi-annually. Settlement is expected to take place on or about March 25, 2025, subject to customary conditions precedent. The notes will be senior unsecured obligations of the company and will be guaranteed by each of the company's subsidiaries that guarantees its senior secured revolving credit facility.

The company intends to apply the gross proceeds from the sale of the notes to repay project financing debt at its Mantoverde SA subsidiary, to pay down debt on the company's senior secured revolving credit facility and for general corporate purposes.

The notes are being offered and sold in the United States only to persons reasonably believed to be qualified institutional buyers in accordance with Rule 144A under the U.S. Securities Act of 1933, as amended, and to non-U.S. persons outside of the United States in compliance with Regulation S under the securities act. The notes are being offered and sold in Canada on a private placement basis pursuant to certain prospectus exemptions.

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.

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