On August 3, 2023, Alan Howe informed the board of directors (the ?Board?) of Sonim Technologies, Inc. of his decision to retire from, and not stand for re-election to the Board, effective as of the end of his term, the date of the conclusion of the Company?s 2023 annual meeting of stockholders. Mr. Howe?s decision not to stand for re-election is not the result of any disagreement with the operations, policies, or practices of the Company. Mr. Howe is the longest-tenured board member of the Company and has been serving on the Board since November of 2017 and has been a source of support and counsel through those years.

The Company formally extends its sincere gratitude to Mr. Howe for his years of dedicated service, leadership, and vision. On August 3, 2023, Jose C. Principe informed the Board of his decision to retire from, and not stand for re-election to the Board, effective as of the end of his term, the date of the conclusion of the Company?s 2023 annual meeting of stockholders. Mr. Principe?s decision not to stand for re-election is not the result of any disagreement with the operations, policies, or practices of the Company.

Mr. Principe has been serving on the Board since 2022 and has been a source of support and counsel throughout the year. The Company formally extends its sincere gratitude to Mr. Principe for his devotion of time and skills to the development of the Company.