Mr. John MacKenzie reports

CAPSTONE'S CHILEAN OPERATIONS AWARDED THE COPPER MARK

The Copper Mark has been awarded to Capstone Copper Corp.'s Mantoverde and Mantos Blancos operations in Chile.

The Copper Mark is a comprehensive assurance framework, developed to ensure that value chain participants demonstrate best practice in responsible production and contribute to the United Nations Sustainable Development Goals. Copper Mark is a voluntary program that independently assesses conformance with 32 environmental, social and governance requirements.

Capstone's chief executive officer, John MacKenzie, commented: "I would like to congratulate our entire team on this esteemed milestone. Responsible operating practices are a vital component of our commitment to the environment, our employees, local communities and governments, and must remain front of mind in everything we do. We recognize our role to be a responsible producer of copper given its critical role in supporting decarbonization and electrification efforts, globally."

Capstone's senior vice-president, risk, ESG, and general counsel, Wendy King, commented: "The Copper Mark serves as a powerful advocate for transparency and accountability, and reinforces the values we place on responsible, sustainable production. We take pride in the achievements of our Chilean operations and are actively striving to replicate this success at Pinto Valley and Cozamin."

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.

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