UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported) April 30, 2025

Registrant’s telephone number, including area code: (406) 606-4117

Not Applicable

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01 Regulation FD Disclosure.

On April 30, 2025, United States Antimony Corporation (NYSE: UAMY) (the “Company” or “USAC”) issued a press release (“Press Release”) announcing the completion of a lengthy review of its expansion plans at the only operating antimony smelter in the United States. The Company has executed definitive contract(s) with WSP USA Inc. (“WSP”) to complete engineering and construction services that would significantly expand its smelting operations located in Thompson Falls, MT. This new working relationship for these services is complimentary to USAC’s existing internal antimony processing knowledge and experience. Combined with WSP’s overall metals processing and environmental experience, the company has put together a first-rate team. The total capital expenditure budget is estimated to be less than $15 Million which would expand the capacity of Thompson Falls to over 300 standard tons per month of production output (six times the current production capacity), and all completed before the end of calendar year 2025. At the same time, existing smelting operations will not be impeded. We believe the aggressive schedule is both achievable and greatly needed for the security of our country’s supply chain.

The foregoing disclosure is qualified in its entirety by the full text of the Press Release.

The information in this Item 7.01, including the exhibit attached hereto, of this Current Report on Form 8-K is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act, whether made before or after the date hereof, except as shall be expressly set forth by specific reference in such a filing. This Item 7.01 of this Current Report on Form 8-K will not be deemed an admission as the materiality of any information in this Item 7.01 that is required to be disclosed solely by Regulation FD.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.