GreenTech Metals Quarterly Activities Report

Trading Symbols

AIM: UFO

FWB: I3A1

24 April 2026

Alien Metals Limited

("Alien" or the "Company")

Announcement of Joint Venture Partner GreenTech Metals Quarterly Activities Report

Alien Metals Limited (AIM: UFO), a minerals exploration and development company, notes the release of the Quarterly Activities Report for the period ending 31 March 2026 by its joint venture partner at the Munni Munni Platinum-Palladium-Copper-Nickel Project ("Munni Munni" or the "Project"), GreenTech Metals Limited (ASX: GRE) ("GreenTech"), highlighting significant progress at Munni Munni in Western Australia. Alien has exposure to key critical metals and precious metals via the Munni Munni Project including copper, nickel, platinum, and palladium.

Alien holds a 30% interest, free carried to the completion of a bankable feasibility study at Munni Munni, together with 47 million GreenTech shares, representing a 17.1% interest in the issued share capital of GreenTech.

Key Highlights:

·    Assays from Q1 2026 drilling expected by GreenTech in the coming weeks

·    Phase 1 drilling programme comprising approximately 2,928 metres across 12 holes completed

·    Resampling of historical core from 16 drill holes is complete, accelerating the QA/QC process and providing significant savings in drilling costs

·    Clear pathway to JORC (2012) Mineral Resource Estimate

The quarter represents a clear acceleration in Project momentum, with Munni Munni rapidly advancing into active drilling targeting resource validation. Alien retains a 30% interest across a consolidated landholding exceeding 500km² in the West Pilbara, free carried through to the completion of a Bankable Feasibility Study ("BFS").

Exploration activity during the period has focused on validating and expanding the historical resource base. A Phase 1 drilling programme comprising approximately 2,928 metres across 12 holes has been completed, alongside the resampling of 16 historical drill holes. This approach has accelerated the validation process while materially reducing drilling costs. A total of 2,199 samples have been submitted for assay, with results expected during Q2 2026. In parallel, an independent QA/QC programme is being undertaken by Snowden Optiro to support the delivery of a JORC (2012) compliant Mineral Resource Estimate.

Importantly, GreenTech notes ongoing technical review of the extensive historical dataset has identified material upside that is not captured in the existing non-JORC resource of 23.6Mt at 2.9g/t 4E for approximately 2.2Moz. This includes the identification of high-grade PGE zones exceeding 4g/t 4E, evidence of under-recognised copper and nickel mineralisation, and shallow mineralised zones that may be amenable to open-pit extraction. These findings point to a broader and more complex mineralised system than previously understood and reinforce the potential for both resource growth and reclassification as validation work progresses.

The combination of systematic data validation and near-term assay results provides a pathway to a JORC-compliant Mineral Resource Estimate. Each of these milestones represents an important stage as the geological model is refined and expanded.

Strategically, Alien's retained interest offers leveraged exposure to one of Australia's most significant undeveloped PGE systems, located in a Tier 1 jurisdiction and increasingly demonstrating multi-commodity potential across PGE, copper and nickel. The free-carried position through to BFS is particularly compelling, enabling the Company to participate fully in resource growth and development progression without incremental capital requirements.

In addition to Munni Munni, Alien shareholders retain exposure to the Elizabeth Hill Silver Project through a 30% joint venture interest, as well as a holding of 30.5 million shares in West Coast Silver Limited (ASX: WCE), providing exposure to both project-level value creation and also its equity shareholding in West Coast Silver.

Figure 1: Munni Munni Project Location

The full GreenTech March Quarterly Activities Report can be found at the following link: http://www.rns-pdf.londonstockexchange.com/rns/7238B_2-2026-4-23.pdf

The GreenTech Appendix 5B can be found at the following link: http://www.rns-pdf.londonstockexchange.com/rns/7238B_1-2026-4-23.pdf

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

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. Alien retains a 30% interest in the Elizabeth Hill Silver Project and additionally holds 30.5 million shares in West Coast Silver Limited, providing both direct project exposure and equity participation in ongoing development.

Competent Person's Statement

 The information in this report that relates to Exploration Targets, Exploration Results, Mineral Resources or Ore Reserves is based on information reviewed by Mr Thomas Reddicliffe, a Competent Person who is a Fellow of the Australasian Institute of Mining and Metallurgy.

Mr Reddicliffe is a Non-Executive Director and Technical Consultant to GreenTech Metals Ltd. Mr Reddicliffe has sufficient experience that is relevant to the style of mineralisation and type of deposits under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves', and a Specialist under the 2015 Edition of the 'Australasian Code for Public Reporting of technical assessments and valuations of mineral assets'. Mr Reddicliffe consents to the inclusion in the report of the matters based on his information and in the form and context in which it appears in this announcement.