West Coast Silver Quarterly Activities Report

In brief · summary, not quotable

Alien Metals Limited's joint venture partner at the Elizabeth Hill Silver Project, West Coast Silver, has reported strong exploration results for the quarter ended 31 March 2026, including significant high-grade silver intercepts such as 27.4m at 1,314 g/t Ag and 22m at 578 g/t Ag, with peak grades reaching 33,107 g/t Ag. A Reverse Circulation drilling program has commenced, and a recent magnetic survey has helped define structural controls on mineralization. Subsequent to the quarter, an inaugural JORC compliant Mineral Resource Estimate of 2.79 Moz silver at 617 g/t Ag was announced, confirming Elizabeth Hill as one of Australia's highest-grade silver deposits. Alien Metals holds a 30% interest in the project and an 8.7% interest in West Coast Silver.

Full announcement

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Alien Metals Limited (AIM: UFO), a minerals exploration and development company, notes the release of the Quarterly Activities Report for the period ended 31 March 2026 from its joint venture partner at the Elizabeth Hill Silver Project ("Elizabeth Hill"), West Coast Silver Limited ("West Coast Silver") (ASX: WCE), which outlines continued strong exploration progress and ongoing growth potential at Elizabeth Hill in the West Pilbara, Western Australia.

Key Highlights:

Assay results received from the Phase 2 diamond drilling programme completed in late 2025. The results confirmed extensive high-grade silver mineralisation and included:

o 27.4m @ 1,314 g/t Ag from 49m (hole 25WCDD014) including multiple bonanza-grade intervals with peak grades up to 33,107 g/t Ag (1,064 oz/t) over 0.35m.

o 22m @ 578 g/t Ag from 6m in hole 25WCDD019 demonstrating mineralisation extending northwest of previous drilling.

o Additional high-grade intercepts including 1.95m @ 1,252 g/t Ag in hole 25WCDD022.

A Reverse Circulation ("RC") drilling program of up to ~4,000m commenced during the quarter.
A late 2025 high-resolution drone magnetic survey covering approximately 14 km² was interpreted to better define structural controls on mineralization.

Alien holds a 30% interest in Elizabeth Hill and holds 30.5 million shares in West Coast Silver (representing an 8.7% interest in the issued share capital of West Coast Silver).

Subsequent to quarter end, as announced on 22 April 2026, West Coast Silver released an inaugural JORC (2012) compliant Mineral Resource Estimate ("MRE") for Elizabeth Hill of 2.79 Moz silver at 617 g/t Ag, comprising 0.37 Moz Indicated and 2.42 Moz Inferred, reported above a 20 g/t Ag cut-off, confirming Elizabeth Hill as one of Australia's highest-grade silver deposits and establishing a strong foundation for near-term growth and potential development.

The full West Coast Silver Quarterly Activities Report is available at: WCE Quarterly Activities Report

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

IFC Advisory (Financial PR and Investor Relations)

Tim Metcalfe / Graham Herring / Zach Cohen

Cleaned text: letterheads, contacts and legal notices removed. View the original announcement ↗ · Company filings. Not investment advice.