X0306 4 2021-10-08 0 0001178697 SONIM TECHNOLOGIES INC SONM 0001211437 MULICA MICHAEL C C/O SONIM TECHNOLOGIES INC. 6500 RIVER PLACE BLVD., BLDG. 7, S#250 AUSTIN TX 78730 1 0 0 0 Common Stock 2021-10-08 4 A 0 75000 0.00 A 81626 D Represents the grant of restricted stock units that vest in one installment on the first anniversary of the grant date, subject to the Reporting Person's continued service to the Issuer. Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock. The amount of securities reported in this Form 4 as beneficially owned by the Reporting Person reflects adjustments made in connection with a 1-for-10 reverse stock split of the Issuer's common stock on September 15, 2021. /s/ Robert Tirva, as Attorney-in-Fact 2021-10-15