Company: SONM
Filing Date: 2025-05-23
Form Type: PREC14A
Source: 0001641172-25-012277
Chunk: 112

Company: SONIM TECHNOLOGIES INC
Filing Date: 2025-05-23
Form: PREC14A
Chunk 112
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-5200 or (203) 658-9400

Email: SONM@investor.sodali.com

** TO VOTE BY MAIL, PLEASE DETACH HERE, SIGN AND DATE WHITEPROXY CARD, AND RETURN IN THE POSTAGE-PAID ENVELOPE PROVIDED **

Sonim Technologies, Inc.

Annual Meeting of Stockholders to be held on July 18, 2025</div>

This WHITE proxy card is Solicited on Behalf of the Board of Directors of Sonim Technologies, Inc.

The undersigned stockholder(s) hereby appoint(s) Peter Liu, Clayton Crolius, and Katherine Schooler (the “Named Proxies”), and each or either of them, as proxies, each with the power to appoint his substitute, and hereby authorize(s) them, and each of them, to represent and to vote, as designated on the reverse of this proxy card, all of the shares of common stock of Sonim Technologies, Inc. that the undersigned stockholder(s) is/are entitled to vote at the Annual Meeting of Stockholders to be held at [TIME] on July 18, 2025 via a live webcast at [ ], and any continuation, postponement, or adjournment thereof.

The Named Proxies are authorized to vote in their discretion (i) for the election of any person to the Board of Directors if any nominee named herein becomes unable to serve or for good cause will not serve, (ii) on any matter that the Board of Directors did not know would be presented at the Annual Meeting of Stockholders by a reasonable time before the proxy solicitation was made, and (iii) on such other business as may properly be brought before the Annual Meeting of Stockholders or any continuation, postponement, or adjournment thereof. This proxy, when properly executed, will be voted in the manner directed herein. If no such direction is made, this proxy will be voted in accordance with the Board of Directors’ recommendations. Proxies cannot be voted “FOR” more than five (5) nominees.

Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting: The Notice and Proxy Statement and Annual Report are available at [ ].

PLEASE MARK, SIGN, DATE AND RETURN THIS WHITEPROXY CARD PROMPTLY USING ENCLOSED REPLY ENVELOPE.

<div align='center'>(continued and to be signed on the reverse side)</div>

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

YOUR VOTE IS IMPORTANT

Please take a moment now