Announcement PDF Metallium Ltd ASX: MTM | OTCQX: MTMCF Australia: Perth, Western Australia USA: ASX Release Houston, Texas 02 September 2025 METALLIUM SECURES FIRST U.S. DEPARTMENT OF DEFENSE SBIR CONTRACT TO ADVANCE DOMESTIC GALLIUM RECOVERY HIGHLIGHTS ▪ First direct U.S. Federal Government contract – formal entry into the U.S. Department of Defense innovation and funding system under a ‘Phase I’ SBIR contract. ▪ Phase I is the entry point into the U.S. federal system, following the same pathway that has led other companies to secure multi-million-dollar DoD contracts under Phase II (up to ~US$1M) and Phase III (US$10M–100M+) ▪ Focused on gallium recovery from gallium-rich waste streams using proprietary Flash Joule Heating (FJH) chlorination technology, with potential recovery of germanium and other high-value metals. ▪ Phase I entails an initial six-month program – a shorter timeline than standard SBIR programs, reflecting the advanced readiness of Metallium’s technology for rapid transition. ▪ Directly supports U.S. strategic objectives to secure domestic supply chains for defence-critical minerals Metallium Limited (“Metallium” or the “Company”) (ASX: MTM; OTCQX: MTMCF) is pleased to announce that Flash Metals Texas Inc., a wholly owned subsidiary of Flash Metals USA Inc. (itself a wholly owned subsidiary of Metallium Ltd), has been awarded a Phase I Small Business Innovation Research (SBIR) contract by the U.S. Department of Defense (DoD) through the Defense Logistics Agency (DLA). The program, titled “Domestic Recovery of Gallium from Waste through Flash Electrothermal Chlorination”, will apply Metallium’s proprietary Flash Joule Heating process to recover gallium from waste streams, including LED scrap and galliumrich waste streams. These feedstocks also contain germanium and other valuable metals, broadening the project’s strategic impact. The program will be executed by Flash Metals Texas as prime contractor, with Rice University’s Tour Group engaged under a resource and cost-sharing arrangement. Its accelerated timeline reflects the advanced readiness of Metallium’s FJH technology for rapid transition. Phase I SBIR funding of ~A$100,000 supports an initial six-month program and confirms Metallium’s U.S. subsidiary as eligible for U.S. Government grant programs. Successful completion will position the Company to apply immediately for Phase II funding of up to US$1 million to advance pilot-scale deployment at Metallium’s existing Chambers County site in Texas, with Phase III enabling full commercial implementation to reinforce U.S. supply chain resilience for gallium and other critical metals. Metallium Managing Director & CEO, Michael Walshe, commented: “This award is a milestone for Metallium as our first direct contract with the U.S. Department of Defense. More than the initial dollar value, it signals our formal entry into the DoD system and follows the proven SBIR pathway that has enabled other ASX companies to progress from Phase I to substantial multi-year, multi-million-dollar contracts. “By demonstrating our technology for gallium recovery, we are building U.S.-based solutions that reduce reliance on foreign supply chains and directly support national security priorities”. Strategic Importance Gallium is a U.S.-designated critical material essential for defence, semiconductors, and communications. Current supply is dominated by non-allied nations, creating national security risks. Metallium’s project provides a domestic pathway for gallium recovery while also building infrastructure to recover additional high-value metals such as germanium. The Phase I program will progress across five key technical workstreams: thermodynamic modelling, chlorination trials and optimisation, real-time monitoring and control development, materials characterisation and yield analysis, and ENGAGE WITH THIS ANNOUNCEMENT ON INVESTORHUB: HERE ASX: MTM | OTCQX: MTMCF technoeconomic and environmental assessment. These deliverables will de-risk the transition to Phase II and position Metallium for rapid scale-up into pilot and commercial operations. This announcement has been authorised for release by the Board of Directors. For further information, please contact: Michael Walshe Managing Director & CEO Metallium Ltd info@metalliuminc.com | +61 8 6391 0112 Andrew Keys Investor Relations & Corporate Communications Keys Thomas Associates Andrew.keys@keysthomas.com | +61 400 400 380 ABOUT METALLIUM LIMITED Metallium Ltd (ABN 27 645 885 463), is pioneering a low-carbon, high-efficiency approach to recovering critical and precious metals from mineral concentrates and high-grade waste streams. The company’s patented Flash Joule Heating (FJH) technology enables the extraction of high-value materials - including gallium, germanium, antimony, rare earth elements, and gold - from feedstocks such as refinery scrap, e-waste, and monazite. Aligned with U.S. strategic supply chain objectives, Metallium has recently secured its first commercial site in Texas via its wholly owned subsidiary, Flash Metals USA Inc., marking a major step toward near-term production and revenue generation. To learn more, visit: Website: metalliuminc.com Contact: info@metalliuminc.com Investor Hub: investorhub.metalliuminc.com 𝕏 x.com/Metallium_MTM | +61 8 6391 0112 www.linkedin.com/company/metalliumltd USA Office: 12 Greenway Plaza, Suite 1100, Houston, Texas USA 77046 Australia Office: Unit 4, 22 Railway Road, Subiaco, Western Australia CAUTIONARY STATEMENT REGARDING VALUES & FORWARD-LOOKING INFORMATION The figures, valuations, forecasts, estimates, opinions and projections contained herein involve elements of subjective judgment and analysis and assumption. Metallium does not accept any liability in relation to any such matters, or to inform the Recipient of any matter arising or coming to the company’s notice after the date of this document which may affect any matter referred to herein. Any opinions expressed in this material are subject to change without notice, including as a result of using different assumptions and criteria. This document may contain forward-looking statements. Forwardlooking statements are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “expect”, and “intend” and statements than an event or result “may”, “will”, “should”, “could”, or “might” occur or be achieved and other similar expressions. Forward-looking information is subject to business, legal and economic risks and uncertainties and other factors that could cause actual results to differ materially from those contained in forward-looking statements. Such factors include, among other things, risks relating to property interests, the global economic climate, commodity prices, sovereign and legal risks, and environmental risks. Forward-looking statements are based upon estimates and opinions at the date the statements are made. Metallium undertakes no obligation to update these forward-looking statements for events or circumstances that occur subsequent to such dates or to update or keep current any of the information contained herein. The Recipient should not place undue reliance upon forward-looking statements. Any estimates or projections as to events that may occur in the future (including projections of revenue, expense, net income and performance) are based upon the best judgment of Metallium from information available as of the date of this document. There is no guarantee that any of these estimates or projections will be achieved. Actual results will vary from the projections and such variations may be material. Nothing contained herein is, or shall be relied upon as, a promise or representation as to the past or future. Metallium, its affiliates, directors, employees and/or agents expressly disclaim any and all liability relating or resulting from the use of all or any part of this document or any of the information contained herein. 2