Company: SONM
Filing Date: 2025-07-02
Form Type: DEFA14A
Source: 0001641172-25-017615
Chunk: 0

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-07-02
Form: DEFA14A
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934</div>

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

| ☐ | Preliminary                                                       
 Proxy Statement                                                   |
| ☐ | Confidential,                                                     
 for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☐ | Definitive                                                        
 Proxy Statement                                                   |
| ☒ | Definitive                                                        
 Additional Materials                                              |
| ☐ | Soliciting                                                        
 Material under §240.14a-12                                        |

<div align='center'>Sonim Technologies, Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)</div>

Payment of Filing Fee (Check all boxes that apply):

| ☒ | No           
 fee required |

| ☐ | Fee                                        
 paid previously with preliminary materials |

| ☐ | Fee                                                                                             
 computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11 |

<div align='center'>Sonim Technologies Special Committee Determines Latest Orbic Proposal to be Inferior

to Social Mobile Transaction Amidst Ongoing Strategic Review

Orbic proposal remains conditional, uncertain, and unlikely to maximize value for Sonim stockholders</div>

San Diego, California – July 2, 2025– Sonim Technologies (NASDAQ: SONM) today announced that its Special Committee of the Board of Directors (the “Special Committee”) has considered, with advice from its financial advisor and legal counsel, the unsolicited, non-binding proposal from Orbic North America, LLC (“Orbic”) dated June 26, 2025, and has determined it to be inferior to the previously announced Letter of Intent (the “Social Mobile LOI”) between Sonim and Social Mobile for the sale of substantially all of Sonim’s operating assets. The Special Committee remains committed to maximizing stockholder value and believes the Social Mobile LOI represents a superior alternative.

The Special Committee found Orbic’s latest proposal to be inadequate for multiple reasons, including:

| ● | Greater                                                                                                                                   
 Transaction Value and Certainty with Social Mobile: The Social Mobile LO