Company: SONM
Filing Date: 2025-07-01
Form Type: 424B4
Source: 0001641172-25-017383
Chunk: 93

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-07-01
Form: 424B4
Chunk 93
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 common stock is traded on The Nasdaq Stock Market LLC under the symbol “SONM.”

Transfer Agent and Registrar

The transfer agent and registrar for our common stock is Equiniti Trust Company, LLC (formerly, American Stock Transfer & Trust Company, LLC). The transfer agent’s address is 6201 15th Avenue, Brooklyn, New York 11219, telephone (800) 937-5449.

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<div align='center'>DESCRIPTION OF THE SECURITIES WE ARE OFFERING</div>

We are offering 7,400,000 shares of our common stock.

Common Stock

The material terms and provisions of our common stock and each other class of our securities which, if designated and issued, qualifies or limits our common stock are described under the caption “ Description of Capital Stock” in this prospectus.

<div align='center'>Material U.S. Federal Income Tax Consequences To Non-U.S. Holders</div>

The following discussion describes the material U.S. federal income tax consequences of the acquisition, ownership and disposition of our common stock acquired in this offering. This discussion is based on the current provisions of the Internal Revenue Code of 1986, as amended (the “Code”), existing and proposed U.S. Treasury regulations promulgated thereunder, and administrative rulings and court decisions in effect as of the date hereof, all of which are subject to change at any time, possibly with retroactive effect. No ruling has been or will be sought from the Internal Revenue Service (the “IRS”), with respect to the matters discussed below, and there can be no assurance the IRS will not take a contrary position regarding the tax consequences of the acquisition, ownership or disposition of our common stock, or that any such contrary position would not be sustained by a court.

We assume in this discussion that the shares of our common stock will be held as capital assets (generally, property held for investment). This discussion does not address all aspects of U.S. federal income taxes, does not discuss the potential application of the Medicare contribution tax on net investment income or the alternative minimum tax and does not deal with state or local taxes, U.S. federal gift and estate tax laws, except as specifically provided below with respect to non-U.S. holders, or any non- U.S. tax consequences that may be relevant to holders in light of their particular circumstances. This discussion also does not address the special tax rules applicable to particular holders, such as

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