Notification of Significant Shareholding

Alpayana S.A.C. ("Alpayana), has on 21 August 2026 acquired 91,313,890 common shares of the Company ("Common Shares"), being the class of the Company's AIM securities, at a price of CAD$0.42 per Common Share for aggregate consideration of CAD$38,351,833.80. The acquisition of Common Shares was pursuant to a private share purchase agreement with a third-party seller.

Immediately prior to the transaction, Alpayana did not beneficially own or controlled any Common Shares or other securities of the Company. Following completion of the transaction, Alpayana beneficially owns and controls 91,313,890 Common Shares, representing approximately 10.97% of the Company's issued and outstanding Common Shares on a non-diluted basis. Alpayana has confirmed that it has no joint actors in respect of the transaction. Accordingly, Alpayana is a substantial shareholder of the Company for the purposes of the AIM Rules.

Mario Stifano, Chief Executive Officer of Galantas, commented: "We welcome Alpayana to our shareholder register as a strategic, long-term shareholder. Alpayana is a private mining group with four decades of disciplined and responsible operation in Peru and Mexico. We view its decision to acquire a substantial position as a strong endorsement of our strategy and of the potential across our project portfolio."

596/2014, which forms part of UK law by virtue of the European Union (Withdrawal) Act 2018. This information is disclosed in accordance with the Company's obligations under Article 17 of UK MAR. Upon publication of this announcement, this inside information is now considered to be in the public domain.