2025 ANNUAL MEETING

June 2025

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Dear Shareholder:

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You are cordially invited to attend the 2025 annual meeting of shareholders of United States Antimony Corporation to be held on July 31, 2025 at 4:15 P.M., Eastern Time. The annual meeting will be a virtual meeting to enable our shareholders to participate from any location around the world that is convenient to them.

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The Notice of Annual Meeting of Shareholders and Proxy Statement describe the formal business to be transacted at the meeting.

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It is important that your shares are represented whether or not you attend the annual meeting and regardless of the number of shares you own. To make sure your shares are represented, we urge you to promptly vote. You may vote your shares by internet, phone or mail. If you attend the meeting, you may vote at the meeting even if you have previously submitted your proxy. The accompanying proxy information also provides instructions for submitting your vote online.

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Please review in detail the attached notice card and proxy statement, which are being mailed to our shareholders on or about June 20, 2025. Your vote is very important to us regardless of the number of shares you own. Whether or not you plan to attend the annual meeting virtually, we urge you to vote as soon as possible by authorizing a proxy as described in the enclosed materials to ensure that your shares are represented at the annual meeting.

You may vote online, via telephone or by mail by following the instructions on the proxy card or voting instruction form sent to you. If you attend the annual meeting and wish to change your proxy vote, you may do so by voting virtually at the annual meeting.

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Thank you for your continued support.

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Sincerely,

Gary C. Evans

Chairman and CEO