Updated Investor Presentation

15 April 2025

East Star Resources Plc

("East Star" or the "Company")

Updated Investor Presentation

East Star Resources Plc (LSE:EST), which is exploring for copper and gold in Kazakhstan, announces it has published an updated investor presentation titled "Unlocking Kazakhstan's Copper & Gold Potential" on its website at: www.eaststarplc.com/presentationsandreports.

The presentation includes updated information on the Company's high impact copper and gold exploration pipeline, including the anticipated summer 2025 drilling of:

· A large epithermal gold target with multi-million ounce potential, of similar origin and scale to the giant Andes gold deposits

o  Snowy - 4km x 1km gold and silver in soil anomaly (up to 0.28 g/t Au and 7.2 g/t Ag) flanked by high grade historical gold mines (the eastern mine produced 21Kt @ 31.2 g/t Au and 2,067 g/t Ag between 1968 and 1970)

· Two priority volcanogenic massive sulphide targets proximal to mines and known deposits, within 11km of processing infrastructure with excess capacity

o  Talovskoye - strong chargeable IP anomaly below a historic mine and correlating with high grade rock chip results

o  Rulikha - electromagnetic and IP anomaly along strike to a historically defined deposit of 14.3 Mt @ 1.2% copper, 3.5% zinc, 0.28 g/t gold, and 13.5 g/t silver

Alex Walker, CEO of East Star, commented:

"This year East Star will update its already-significant Verkhuba Copper Deposit resource model, drill at least two geophysical anomalies at known, high grade, polymetallic deposits, and drill test the multimillion-ounce potential epithermal gold and silver target at Snowy. Shareholders should be in no doubt that we are approaching the drilling of potentially company-making targets here.

At the same time, off the back of the work we completed as part of the BHP Xplor programme in 2024, we are looking to acquire additional licences that are similarly highly prospective for porphyry and epithermal gold deposits. Now is the time to make copper and gold discoveries in Kazakhstan."

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. East Star's management are based permanently on the ground, supported by local expertise. The Company is pursuing three exploration strategies:

· A Volcanogenic Massive Sulphide (VMS) discovery 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, supported by an initial $500k grant from BHP Xplor in 2024

· Sediment-hosted copper exploration with Getech where the initial targeting strategy is at no cost to East Star

Visit our website:

www.eaststarplc.com

Follow us on social media:

LinkedIn: https://www.linkedin.com/company/east-star-resources/

X (formerly Twitter): https://twitter.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.

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