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    United States Antimony NYSE move: capacity, funding and supply-chain notes for engineers

    March 7, 2026|

    Reviewed by Tom Sullivan

    United States Antimony NYSE move: capacity, funding and supply-chain notes for engineers

    First reported on MINING.com

    30 Second Briefing

    United States Antimony has secured approval to uplist from NYSE American to the New York Stock Exchange under ticker UAMY, with trading to start on 11 March and its share price jumping about 10%, valuing the company at US$1.4 billion. The Texas-based producer has also received US$27 million in US Defense Department funding to expand antimony extraction and refining, centred on a Montana smelter rated at 5 million lb/year of antimony metal. The company plans a fully integrated supply chain by adding ore extraction in Alaska for defence, battery and flame-retardant markets.

    Technical Brief

    • Integration plan hinges on adding primary ore extraction in Alaska to feed the existing Montana smelter.
    • Defence-sector qualification will likely require tight compositional control for antimony products used in munitions and alloys.
    • Flame-retardant and battery markets imply demand for both trioxide and metal forms, affecting smelter product mix design.

    Our Take

    US Antimony’s Pentagon-backed antimony capacity in Montana slots into the same US critical minerals policy push that underpins the large CHIPS Act support for USA Rare Earth in Texas, suggesting Washington is now backing both light (rare earths) and metalloid (antimony) supply chains onshore.

    In our database, antimony appears far less frequently than rare earths within the 135 keyword-matched critical minerals pieces, so a NYSE American listing for a dedicated antimony producer signals that this niche metal is moving closer to the mainstream investor universe.

    The combination of US Defense Department funding and an NYSE American listing gives US Antimony a capital-markets profile comparable to USA Rare Earth’s CHIPS-supported build-out, which is likely to raise the bar for smaller US critical minerals hopefuls without similar federal alignment.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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