# EDGAR Filing Document

**Accession Number:** 0001178697
**File Stem:** 0001641172-25-016672
**Filing Date:** 2025-6
**Character Count:** 5233
**Document Hash:** 6a7476e6edac0ec8e7a51c6313b6f641
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001641172-25-016672.hdr.sgml**: 20250626

**ACCESSION NUMBER**: 0001641172-25-016672

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250626

**DATE AS OF CHANGE**: 20250626

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SONIM TECHNOLOGIES INC
- **CENTRAL INDEX KEY:** 0001178697
- **STANDARD INDUSTRIAL CLASSIFICATION:** TELEPHONE & TELEGRAPH APPARATUS [3661]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 943336783
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38907
- **FILM NUMBER:** 251080962

**BUSINESS ADDRESS:**
- **STREET 1:** 4445 EASTGATE MALL
- **STREET 2:** SUITE 200
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92121
- **BUSINESS PHONE:** 650-378-8100

**MAIL ADDRESS:**
- **STREET 1:** 4445 EASTGATE MALL
- **STREET 2:** SUITE 200
- **CITY:** SAN DIEGO
- **STATE:** CA
- **ZIP:** 92121

**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**

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

**Sonim Technologies, Inc.**

**(Name of Registrant as Specified In Its Charter)**

**(Name of Person(s) Filing Proxy Statement, if other than the Registrant)**

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

On June 26, 2025, the following email was sent by Clay Crolius, Chief Financial Officer of Sonim Technologies, Inc. (the "Company"), to the Company's employees:

Team,

Many of you have been asking when and how you will receive the WHITE card for proxy voting. If you haven't already received communication from your broker (e.g. E-Trade) or if you have questions, please contact your broker directly or the Company's proxy solicitor, Sodali:

430 Park Avenue, 14th Floor,

New York, NY 10022

Banks and Brokers Call: (203) 658-9400

Stockholders Call Toll Free: (800) 662-5200

E-mail: SONM@investor.sodali.com

Voting closes July 17, 2025 at 11:59PM Eastern Time.

Best regards,

Clay

Clay Crolius

CFO

Sonim Technologies

**Important Information and Where to Find It**

Sonim has filed with the SEC a definitive proxy statement on Schedule 14A, containing a form of **WHITE** proxy card, with respect to its solicitation of proxies for the 2025 Annual Meeting of Stockholders.

**Sonim's stockholders are strongly encouraged to read Sonim's definitive proxy statement (including any amendments or supplements thereto) and any other documents to be filed with the SEC carefully and in their entirety when they become available because they will contain important information.**

Stockholders may obtain a free copy of the definitive proxy statement, any amendments or supplements to the proxy statement, and other documents that Sonim files with the SEC at no charge from the SEC's website at <u>www.sec.gov.</u> Copies will also be available at no charge on Sonim's website at <u>https://ir.sonimtech.com/sec-filings/all-sec-filings</u>.

**Participants in Solicitation**

Sonim and its respective directors, executive officers, and other members of their management and employees, including Peter Liu (Chief Executive Officer and a director), Clay Crolius (Chief Financial Officer), and Sonim's directors – James Cassano, Mike Mulica, Jack Steenstra, and Jeffrey Wang – under SEC rules, may be deemed to be participants in the solicitation of proxies of Sonim's stockholders in connection with the election of directors at Sonim's 2025 Annual Meeting and related proposals to Sonim's stockholders.

Stockholders may obtain more detailed information regarding Sonim's directors and executive officers, including a description of their direct or indirect interests, by security holdings or otherwise, under the captions "*[Directors, Executive Officers, and Corporate Governance](https://www.sec.gov/Archives/edgar/data/1178697/000164117225015578/formdefc14a.htm#a_025)* ," "*[Security Ownership of Certain Beneficial Owners and Management](https://www.sec.gov/Archives/edgar/data/1178697/000164117225015578/formdefc14a.htm#a_055) ,*" and "*[Certain Relationships and Related Party Transactions](https://www.sec.gov/Archives/edgar/data/1178697/000164117225015578/formdefc14a.htm#a_052)*" of Sonim's definitive proxy statement for the 2025 Annual Meeting filed with the SEC on June 18, 2025.

To the extent holdings of our directors and executive officers reported in the definitive proxy statement change, such changes will be reflected on Statements of Change in Ownership on Forms 3, 4 or 5 filed with the SEC, if and when they become available. These documents will be available free of charge as described above.