Company: SONM
Filing Date: 2025-11-12
Form Type: 424B3
Source: 0001493152-25-021905
Chunk: 0

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-11-12
Form: 424B3
Chunk 0
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Filed pursuant to Rule 424(b)(3)

Registration No. 333-290589

PROSPECTUS

<div align='center'>SONIM TECHNOLOGIES, INC.

Up to 19,444,444 Shares of Common Stock</div>

This prospectus relates to the potential offer and sale from time to time by Chardan Capital Markets LLC (“Chardan” or the “Selling Securityholder”) of up to 19,444,444 shares of our common stock, par value $0.001 per share (“Common Stock”), that have been or may be issued by us to Chardan pursuant to a ChEF Purchase Agreement, dated as of September 29, 2025 (the “Signing Date”), by and between us and Chardan (the “Purchase Agreement”) establishing a committed equity facility (the “Facility”). Such shares of our Common Stock consist of up to 19,444,444 shares of our Common Stock that we may elect, in our sole discretion, to issue and sell to Chardan, from time to time under the Purchase Agreement (the “Purchase Shares”). The actual number of shares of our Common Stock issuable will vary depending on the then current market price of shares of our Common Stock sold to Chardan under the Facility, but will not exceed the number set forth in the preceding sentence unless we file an additional registration statement under the Securities Act with the SEC. See “ The Committed Equity Financing” for a description of the Purchase Agreement and the Facility and “ Selling Securityholder” for additional information regarding Chardan and “ Plan of Distribution (Conflicts of Interest)” for a description of compensation payable to Chardan.

We are not selling any securities under this prospectus and will not receive any of the proceeds from the sale of the shares of our Common Stock by Chardan. We may receive up to $500.0 million in aggregate gross proceeds from Chardan under the Purchase Agreement in connection with sales of the shares of our Common Stock to Chardan pursuant to the Purchase Agreement after the date of this prospectus. However, the actual proceeds from Chardan may be less than this amount depending on the number of shares of our Common Stock sold and the price at which the shares of our Common Stock are sold.

This prospectus provides you with a general description of such securities and the general manner in which Chardan may offer or sell the securities. More specific terms of any securities that Chardan may offer or sell may be provided