On September 24, 2020, Mr. Maurice Hochschild and Mr. Jeffrey D. Johnson, who currently serve on the Board of Directors of Sonim Technologies, Inc. (the Company), informed the Company of their intention to step down from the Board of Directors of the Company effective September 27, 2020. Mr. Hochschild and Mr. Johnson served on the Nominating and Corporate Governance Committee of the Board of Directors. Mr. Kenneth Young and Ms. Susan G. Swenson, who currently serve on the Company's Board of Directors, have joined the Nominating and Corporate Governance Committee to replace Mr. Hochschild and Mr. Johnson, respectively. Mr. Young has become the Chairperson of the Nominating and Corporate Governance Committee.