Company: SONM
Filing Date: 2025-11-24
Form Type: PREM14A
Source: 0001493152-25-024848
Chunk: 6

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-11-24
Form: PREM14A
Chunk 6
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 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:</div>

The accompanying proxy statement and form of proxy
are first being mailed to stockholders on or about [XX], 2025.

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

San Diego, California

[XX], 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                                                                              |     |   34 |
| Background of the Asset Sale                                                                                  |     |   35 |
| Reasons for the Asset Sale and Recommendation of our Board                                                    |     |   52 |
| Fairness of the Asset Sale