United States Antimony Corp

United States Antimony Corporation’s ("US Antimony," "USAC," the "Company," "we," "us," and "our,") principal business is in the mining, procuring, processing and sale of antimony and precious metals, primarily gold and silver, in Montana and Mexico, and the mining, processing, and sale of zeolite in Idaho. Beginning in late 2024 and continuing in 2025, the Company acquired mining claims in Alaska, Montana, and Canada prospective for antimony, tungsten, cobalt and other critical minerals. In addition, the Company entered into an agreement to acquire exploration rights for mining properties located in the southeastern United States. The Company also procured antimony ore from new international suppliers and is nearing construction completion of an expansion of its antimony processing facility located in Montana that is expected to more than triple its current capacity. This additional antimony supply and processing capacity will be used to fulfill the Company’s two new five-year sales contracts with the U.S. Defense Logistics Agency and an industrial customer, both of which were secured in 2025.

On March 11, 2026, the Company’s common stock began trading on the New York Stock Exchange ("NYSE"). Prior to that date, the Company’s common stock was listed on the NYSE American exchange and the NYSE Texas.

Antimony and zeolite are minerals used in a wide range of industrial, commercial, and governmental applications, and the Company supplies these minerals in processed forms suitable for end-use applications.

The Company began operations in Montana in 1970 to mine and process antimony ore. Antimony mining ceased in the U.S. in the 1980’s, including our antimony mining operation located in Montana, due to a significant increase of less expensive antimony ore being imported into the United States. However, the Company continued to process ore sourced from foreign suppliers into antimony trioxide, antimony metal, and antimony trisulfide and into precious metals, primarily gold and silver, at its facility in Montana. In 2025, the Company purchased the surface rights for some of its patented mining claims in Montana and mined 840 tons of antimony ore. While still procuring antimony ore from foreign suppliers, the Company’s operation in Montana is once again vertically integrated with the mining of its own ore in 2025. The Company also processes antimony ore at its two facilities located in Mexico, which are included in the Company’s subsidiary, US Antimony de Mexico, S.A. de C.V. ("USAMSA"), that it formed in Mexico in 1998. The Company established another subsidiary, Antimonio de Mexico, S.A. de C.V. ("ADM"), in Mexico in 2005 to explore and develop antimony and precious metal deposits in Mexico. Our Los Juarez mining claims and concessions in Mexico are included in ADM. Currently, the Company has no active operations in the Los Juarez, Mexico area.