Annual Report 2023

In 2023 we publish our first sustainability report which marks an important milestone. Sunstone has continued its efforts to provide a safe, healthy and diverse workplace, which is essential to being able to attract and retain employees of the highest calibre. Our health and safety performance, as well as the representation of women within our technical teams, are steps in the right direction within our ESG strategy. We firmly believe that responsible mining can be transformative for the development of communities in Ecuador, and we are committed to being a part of this positive change. I would like to take this opportunity to express my thanks to Sunstone’s staff, management and my fellow directors for their dedication and work during the past 12 months. We are committed to delivering strong shareholder returns and growing the Company through its activities in Ecuador. Yours sincerely Graham Ascough Chairman, Sunstone Metals Limited Company Highlights Inaugural Mineral Resource Estimate of 2.7Moz AuEq for the Brama-Alba target at the Bramaderos project in Southern Ecuador (refer to page 15); Discovery success at the high grade gold-silver Limon epithermal target within the Bramaderos project; Expanding the scale of the Company’s projects in Ecuador through signing of a Staged Acquisition Agreement to acquire the Verde Chico Project located to the west of the El Palmar; Monetising the remaining balance of shares in Copperstone Resources AB for approximately $1.9 million during the year; and Raising funds of $12 million through an oversubscribed placement bringing new institutional investors onto the share register. 3 Sunstone Metals Limited Annual Report 2023

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