Capstone Copper Announces Inclusion in the S&P/ASX 300 Index

Capstone Copper Corp.

VANCOUVER, British Columbia–BUSINESS WIRE–

Capstone Copper Corp. (“Capstone”, “CS” or the “Company”) (TSX: CS) (ASX: CSC) today announced that the CHESS Depositary Interests (“CDI”) of the Company will be added to the Standard & Poors (“S&P”)/ASX 300 Index by the S&P Dow Jones effective prior to ASX market opening on September 23, 2024.

John MacKenzie, Capstone’s CEO, commented, “We are very pleased to have been included in the S&P/ASX 300 Index as part of the September rebalance. Inclusion in this index recognizes the early success of our secondary listing in Australia, 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, more broadly, investors in the Asia Pacific region.”

The S&P/ASX 300 is designed to provide investors with broad exposure to the Australian equity market. The index measures up to 300 of Australia’s largest securities by float-adjusted market capitalization and covers the large-cap, mid-cap, and small-cap components of the S&P/ASX Index Series.

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

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 sustainably producing copper to meet the world’s growing needs.

/Public Release.