Company: SONM
Filing Date: 2025-12-05
Form Type: DEFM14A
Source: 0001493152-25-026277
Chunk: 15

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-12-05
Form: DEFM14A
Chunk 15
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 card or in the instructions that accompanied  
 your proxy materials.                                                                                                              |

If your shares are held in “street name”
(meaning the shares are held in the name of a bank, broker, or other nominee who is the record holder), you must provide the bank, broker,
or other nominee with instructions on how to vote your shares and can do so as follows:

| ● | By Internet or by telephone. Follow the instructions you receive from the bank, broker,                                           
 or other nominee to vote by Internet or telephone.                                                                                |
| ● | By mail. You will receive instructions from the bank, broker, or other nominee explaining                                         
 how to vote your shares.                                                                                                          |
| ● | At the meeting. If you attend the Special Meeting, you can vote using the 12-digit control                                        
 number in your notice of Internet availability of the proxy materials, on your proxy card or in the instructions that accompanied 
 your proxy materials.                                                                                                             |

To ensure that your vote is counted, please remember
to submit your vote by the date and time indicated on your proxy card, voting instruction form, or e-mail notification, as applicable.

Solicitation of Proxies

Our board is soliciting your vote for the Special
Meeting.

We will pay all of the costs of soliciting these
proxies. Our directors, officers, and employees may solicit proxies in person or by e-mail or other electronic means, or by telephone.
We will pay these directors, officers, and employees no additional compensation for these services. We will ask banks, brokers, and other
nominees to forward these proxy materials to their principals and to obtain authority to execute proxies. We will then reimburse them
for their reasonable, out-of-pocket expenses. The expense associated with the solicitation of proxies will include reimbursement for
postage and clerical expenses to brokerage houses and other custodians, nominees, or fiduciaries for forwarding proxy materials and other
documents to beneficial owners of stock held in their names. We have engaged the services of Sodali & Co with respect to proxy soliciting
matters at an expected cost of approximately $30,000, not including incidental expenses.

Interests of our Directors and Executive Officers in the Asset Sale (see page 65)

In considering the recommendation of our board
to vote “FOR” the Asset Sale Proposal, you should be aware that, aside from their interests as Sonim stockholders, our directors
and executive officers have interests in the Asset Sale that are different from, or