West Coast Silver - Trading Halt

THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION FOR THE PURPOSES OF ARTICLE 7 OF THE MARKET ABUSE REGULATION (596/2014/EU) AS THE SAME HAS BEEN RETAINED IN UK LAW AS AMENDED BY THE MARKET ABUSE (AMENDMENT) (EU EXIT) REGULATIONS (SI 2019/310). UPON THE PUBLICATION OF THIS ANNOUNCEMENT, THIS INSIDE INFORMATION IS NOW CONSIDERED TO BE IN THE PUBLIC DOMAIN.

Trading Symbols

AIM: UFO FWB: I3A1

20 April 2026

Alien Metals Limited

("Alien" or the "Company")

West Coast Silver -Trading Halt

Alien Metals Limited (AIM: UFO), a minerals exploration and development company, advises that its joint venture partner, West Coast Silver Limited (ASX: WCE) ("West Coast Silver"), has requested a trading halt with respect to its securities effective Monday, 20 April 2026, pursuant to ASX Listing Rule 17.1.

The following information was provided by West Coast Silver:

a) advises that the reason for the trading halt is to prevent trading taking place on an uninformed basis and to facilitate an orderly market in the Company's securities pending an announcement of a JORC mineral resource estimate for its Elizabeth Hill project;

b) requests the trading halt to remain in place until the earlier of:

〉 the Company releasing an announcement to the market concerning the above matter; or

〉 the commencement of trading on Wednesday, 22 April 2026; and

c) is not aware of any reason why the trading halt should not be granted or of any other information necessary to inform the market or ASX about the trading halt.

The full text of the announcement issued by West Coast Silver is provided below in Appendix A.

For further information, please visit the Company's website at www.alienmetals.uk or contact:

Alien Metals Limited

Bruce Garlick

Email: [email protected]

Strand Hanson (Financial and Nominated Adviser)

James Harris / James Dance / Edward Foulkes

Tel: +44 (0) 207 409 3494

Zeus Capital Limited (Joint Broker)

Harry Ansell / Katy Mitchell Tel +44 (0) 203 829 5000

Turner Pope (Joint Broker)

Andy Thacker / Guy McDougall

Tel: +44 (0) 203 657 0050

Notes to Editors

Alien Metals Ltd is a mining exploration and development company listed on the AIM market of the London Stock Exchange (AIM: UFO). The Company follows a balanced strategy of advancing and strengthening its asset portfolio through targeted technical work and project development, while evaluating partnerships, joint ventures, and selective monetisation opportunities that are value-enhancing for shareholders. At the same time, Alien will continue to consider opportunities to expand our asset base through carefully selected acquisition opportunities which meet the Board's prudent criteria.

Alien's principal focus is the advancement and development of its 90%-owned Hancock Iron Ore Project in the central Pilbara region of Western Australia. The Hancock tenements contain a JORC-compliant resource of 8.4Mt at 60% Fe and offer significant exploration upside, which is targeted to deliver a mining operation of 2Mtpa for 10 years. The Project benefits from direct access to the Great Northern Highway, providing a route to export facilities at Port Hedland, one of the world's largest iron ore export hubs. Alien also holds exploration interests in the Brockman and Vivash iron ore projects in the West Pilbara.

Alien additionally retains exposure to two advanced precious and base metal assets in the Pilbara. At Munni Munni, one of Australia's largest PGM systems hosting a historic resource of 2.2Moz PGM (Palladium, Platinum, and Rhodium) and gold, the Company has completed its partial asset sale and joint venture transaction with GreenTech Metals Ltd, under which Alien has divested a 70% interest in the Munni Munni tenements to GreenTech and Alien will retain a 30% interest, free carried to the completion of a bankable feasibility study at Munni Munni. Alien (via wholly owned subsidiary A.C.N. 643 478 371 Pty Ltd) also retains a 30% interest in the Elizabeth Hill Silver Project through a joint venture with Crest, which encompasses the Elizabeth Hill Mining Lease M47/342, which has produced some of Australia's highest-grade silver ore during the late 1990s.

Appendix A - ASX: WCE ANNOUNCEMENT

Fraser Staltari

ASX Adviser, Listings Compliance (Perth)

Australian Securities Exchange

Level 40, Central Park

152-158 St Georges Tce

Perth WA 6000

Email: [email protected] and [email protected]

Dear Fraser,

West Coast Silver Limited (ASX: WCE) - Request for Trading Halt

West Coast Silver Ltd (ASX: WCE) (WCE Silver or the Company) hereby requests a trading halt with respect to its securities effective Monday, 20 April 2026 pursuant to ASX Listing Rule 17.1.

The following information was provided in accordance with ASX Listing Rule 17.1, the Company:

a) advises that the reason for the trading halt is to prevent trading taking place on an uninformed basis and to facilitate an orderly market in the Company's securities pending an announcement of a JORC mineral resource estimate for its Elizabeth Hill project;

b) requests the trading halt to remain in place until the earlier of:

〉 the Company releasing an announcement to the market concerning the above matter; or

〉 the commencement of trading on Wednesday, 22 April 2026; and

c) is not aware of any reason why the trading halt should not be granted or of any other information necessary to inform the market or ASX about the trading halt.

This request is authorised for release by Bruce Garlick, Executive Chairman, on behalf of the Board of Directors.

Your sincerely

Bruce Garlick

Executive Director

West Coast Silver Limited

E: [email protected]