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.

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