Announcement PDF RNS Number : 0911D East Star Resources PLC 13 October 2025 13 October 2025 East Star Resources Plc ("East Star" or the "Company") Extension of Warrant Instrument East Star Resources Plc (LSE:EST), which is exploring for copper and gold in Kazakhstan, announces an extension of the expiry date of the 35,199,667 warrants with an exercise price of 3p due to expire on 15 October 2025 that were issued pursuant to the placing announced on 2 October 2023 (the "Warrants") for a period of two and a half months to 31 December 2025. As a participant in the 2 October 2023 placing, Alex Walker, Chief Executive Officer of East Star, is a holder of 1,254,679 of the Warrants and abstained from the Board vote to approve the extension. Contacts: East Star Resources Plc Alex Walker, Chief Executive Officer Tel: +44 (0)20 7390 0234 (via Vigo Consulting) SI Capital (Corporate Broker) Nick Emerson Tel: +44 (0)1483 413 500 Vigo Consulting (Investor Relations) Ben Simons / Peter Jacob / Anna Stacey Tel: +44 (0)20 7390 0234 About East Star Resources Plc East Star Resources is focused on the discovery and development of copper and gold in Kazakhstan. East Star's management are based permanently on the ground, supported by local expertise. The Company is pursuing multiple exploration strategies: · Volcanogenic massive sulphide (VMS) exploration, which to date includes a deposit with a maiden JORC MRE of 20.3Mt @ 1.16% copper, 1.54% zinc and 0.27% lead, in an infrastructure-rich region, amenable to a low capex development · Copper porphyry and epithermal gold exploration, with multiple opportunities for Tier 1 deposits, initially supported by an initial US$500k grant from BHP Xplor in 2024 Visit our website: www.eaststarplc.com Follow us on social media: LinkedIn: https://www.linkedin.com/company/east-star-resources/ X: https://x.com/EastStar_PLC Subscribe to our email alert service to be notified whenever East Star releases news: www.eaststarplc.com/newsalerts The person who arranged for the release of this announcement was Alex Walker, CEO of the Company. This announcement contains inside information for the purposes of Article 7 of Regulation 2014/596/EU which is part of domestic UK law pursuant to the Market Abuse (Amendment) (EU Exit) Regulations (SI 2019/310) ("UK MAR"). Upon the publication of this announcement, this inside information (as defined in UK MAR) is now considered to be in the public domain. This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com. RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our Privacy Policy. END MSCMJBRTMTIBMFA