Unusual Machines Inc美国存托股份招股说明书（2026年3月20日版）

PROSPECTUS SUPPLEMENT(To the Prospectus dated April 21, 2025) Unusual Machines, Inc. We are offering up to 8,823,529 shares of our common stock, par value $0.01 per share (the “Common Stock”) We refer to the sale ofthe Common Stock as the “Offering.” Dominari Securities LLC and JonesTrading Institutional Services LLC (the “Placement Agents”) are acting on a reasonable best-efforts basis and we agree and acknowledge that there is no guarantee of the successful placement of the securities, or any portionthereof, in this Offering. As compensation for the services rendered, we will pay the Placement Agents a transaction fee equal to seven Our Common Stock is traded on the NYSE American under the symbol “UMAC.” On March 19, 2026, the last reported sales price ofour Common Stock on the NYSE American was $18.60 per share. Investing in our securities involves risks. You should read carefully and consider “Risk Factors” included in this prospectussupplement on page S-5 and in our accompanying prospectus beginning on page 2 before investing in our securities. Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of thesesecurities or determined whether this prospectus supplement or the accompanying prospectus is truthful or complete. Any (1)Consists of a cash fee of seven percent (7.0%) of the aggregate gross proceeds in this Offering. See “Plan of Distribution” on pageS-12 for a description of compensation payable to the Placement Agents. Delivery of the shares being offered pursuant to this prospectus supplement and the accompanying prospectus is expected to be madeon or about March 23, 2026, subject to the satisfaction of certain closing conditions. Dominari Securities LLC Co-Placement Agent The date of this prospectus supplement is March 19, 2026. TABLE OF CONTENTS PROSPECTUS SUPPLEMENT PROSPECTUS ABOUT THIS PROSPECTUS SUPPLEMENT This document is in two parts. The first part is this prospectus supplement, which describes the terms of the Offering and also adds toand updates information contained in the accompanying prospectus and the documents incorporated by reference into this prospectussupplement and the accompanying prospectus. The second part consists of a prospectus dated April 21, 2025, included in theregistration statement on Form S-3 (No. 333-286413). Since the accompanying prospectus provides general information about us,some of the information may not apply to this Offering. This prospectus supplement describes the specific details regarding thisOffering. Generally, when we refer to the “prospectus,” we are referring to both parts of this document. Additional information is Neither we nor the Placement Agents are making an offer to sell the securities in jurisdictions where the offer or sale is not permitted.The distribution of this prospectus supplement and the accompanying prospectus and the offer and sale of our securities in certainjurisdictions may be restricted by law. Persons outside the United States who come into possession of this prospectus supplement andthe accompanying prospectus must inform themselves about and observe any restrictions relating to the Offering of the securities and You should rely only on information contained in this prospectus supplement, the accompanying prospectus and thedocuments we incorporate by reference in this prospectus supplement. We have not authorized anyone to provide you withinformation that is different from that contained in this prospectus supplement. We are not offering to sell or seeking offers to Unless otherwise mentioned or unless the context requires otherwise, all references in this prospectus supplement to the “Company,”“we,” “us,” “our” and “Unusual Machines” refer to Unusual Machines, Inc., a Nevada corporation, and its consolidated subsidiaries. This prospectus supplement contains summaries of certain provisions contained in some of the documents described herein, butreference is made to the actual documents for complete information. All of the summaries are qualified in their entirety by the actualdocuments. Copies of some of the documents referred to herein have been filed, will be filed or will be incorporated by reference as CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION This prospectus supplement and the accompanying prospectus, including documents incorporated by reference into this prospectussupplement and the accompanying prospectus, contains forward-looking statements. All statements other than statements of historicalfacts, including statements regarding our future financial position, liquidity, business strategy and plans and objectives of managementfor future operations, are forward-looking statements. The words “believe,” “may,” “estimate,” “continue,” “anticipate,” “intend,”“should,” “plan,” “could,” “target,” “potential,” “is likely,” “will,” “expect” and similar expressions, as they relate to us, are intended The results anticipated by