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:

• 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;
• 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

• 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

Strand Hanson (Financial and Nominated Adviser)

James Harris / James Dance / Edward Foulkes

Zeus Capital Limited (Joint Broker)

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

Turner Pope (Joint Broker)

Andy Thacker / Guy McDougall

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

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:

• 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;
• 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

• 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