X0306 4 2021-10-12 1 0001178697 SONIM TECHNOLOGIES INC SONM 0000895421 MORGAN STANLEY 1585 BROADWAY NEW YORK NY 10036 0 0 1 0 Common Stock 2021-10-12 4 S 0 60000 D 846629 I By Subsidiary The price reported in Column 4 is a weighted average price of $2.02. The shares were sold in multiple transactions at prices ranging from $1.99 to $2.05, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. By: /s/ Joseph Maehr, Authorized Signatory 2021-10-14