Announcement PDF RNS Number : 2882L East Star Resources PLC 12 December 2025 12 December 2025 East Star Resources Plc ("East Star" or the "Company") Notice of Investor Webcast East Star Resources Plc (LSE: EST), the Kazakhstan-focused gold and base metals explorer, will host a presentation and Q&A via the Investor Meet Company platform at 11.00 a.m. GMT on Tuesday, 16 December 2025. The presentation, titled 'Company Update', will discuss, inter alia, the US$25M+ gold exploration joint venture with Endeavour Exploration Limited ("Endeavour"), as well as Endeavour's investment into the Company, and the recently announced US$65M farm-in agreement with a leading EPC partner to advance the Verkhuba Copper Deposit and bring it into production. The presentation, which will be hosted by Alex Walker, CEO, is open to all existing and potential shareholders. Questions can be submitted pre-event via the Investor Meet Company dashboard up until 9.00 a.m. GMT on 15 December 2025, or at any time during the presentation. A recording of the presentation will be made available on the Company's website later that day. Investors can sign up to Investor Meet Company for free and add East Star Resources Plc in order to attend the Webcast via: https://www.investormeetcompany.com/east-star-resources-plc/register-investor. Investors who already follow East Star on the Investor Meet Company platform will automatically be invited. No material new financial or other information will be provided. 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 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. The Company is pursuing multiple exploration strategies including: · A joint venture with Hong Kong Xinhai Mining Services Limited to take the Verkhuba Deposit (20.3Mt @ 1.16% copper, 1.54% zinc and 0.27% lead) into production (at no further cost to East Star) with East Star retaining 30% ownership in production · A second VMS Exploration Target with up to 23Mt @ 2.4% copper equivalent in the same region, with numerous other targets being advanced to drill-ready status · A $25 million+ strategic gold exploration joint venture with Endeavour Mining · Tier 1 potential copper porphyry targets and epithermal gold targets in a proven copper porphyry and epithermal belt 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 About Reach Announcements Reach is an investor communication service aimed at assisting listed and unlisted (including AIM quoted) companies to distribute media only / non-regulatory news releases such as marketing messages, corporate and product information into the public domain. An RNS Regulatory announcement is required to be notified under the AIM Rules for Companies. This information is provided by Reach, the non-regulatory press release distribution service of RNS, part of the London Stock Exchange. 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 NRAKFLFFELLZFBB