Company: SONM
Filing Date: 2025-12-05
Form Type: DEFM14A
Source: 0001493152-25-026277
Chunk: 6

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-12-05
Form: DEFM14A
Chunk 6
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 concerning the Asset Purchase Agreement, the Asset Sale, the Special Meeting, or the
proxy statement, or would like additional copies of the proxy statement or need help voting your shares of common stock, please contact
our proxy solicitor:

<div align='center'>430 Park Avenue, 14th Floor

New York, New York 10022

Stockholders Call Toll-Free in North America:
(800) 662-5200

Outside of North America Call Collect: (203) 658-94000

E-mail: SONM@investor.sodali.com</div>

The accompanying proxy statement and form of proxy
are first being mailed to stockholders on or about December 5, 2025.

| By Order of the Board of Directors, |                         |
| Name:                               | Clay Crolius            |
| Title:                              | Chief Financial Officer |

San Diego, California

December 5, 2025

| Table of Contents                                                                                             |     | Page |
| Summary Term Sheet                                                                                            |     |    1 |
| Questions and Answers About the Special Meeting and the Asset Sale                                            |     |   10 |
| Unaudited Pro Forma Condensed Financial Information                                                           |     |   17 |
| Cautionary Note Regarding Forward-Looking Statements                                                          |     |   23 |
| Risk Factors                                                                                                  |     |   24 |
| The Special Meeting                                                                                           |     |   28 |
| Date, Time, and Place                                                                                         |     |   28 |
| Purpose of the Special Meeting                                                                                |     |   28 |
| Recommendation of our Board                                                                                   |     |   28 |
| Record Date and Voting Power                                                                                  |     |   28 |
| Quorum                                                                                                        |     |   28 |
| Required Vote                                                                                                 |     |   29 |
| Voting Procedures                                                                                             |     |   29 |
| Failure to Vote                                                                                               |     |   30 |
| Proxies; Revocation of Proxies                                                                                |     |   31 |
| Adjournments                                                                                                  |     |   31 |
| Solicitation of Proxies                                                                                       |     |   32 |
| Questions and Additional Information                                                                          |     |   32 |
| Proposal 1: Asset Sale Proposal                                                                               |     |   33 |
| Information about the Parties                                                                                 |     |   33 |
| General Description of the Asset Sale                                                                         |     |   34 |
| Consideration for the Asset Sale