X0206 3 2019-05-09 0 0001178697 SONIM TECHNOLOGIES INC SONM 0001365572 Young Kenneth M 21255 BURBANK BLVD, SUITE 400 WOODLAND HILLS CA 91367 1 0 0 0 Common Stock 1139085 I By B. Riley Financial, Inc. Common Stock 1073658 I By BRC Partners Opportunity Fund, L.P. Convertible Promissory Note (right to buy) 8.87 2018-04-09 2022-09-01 Common Stock 1099278 I By B. Riley Principal Investments, LLC Mr. Young is the President of B. Riley Financial, Inc. ("B. Riley"). BRC Partners Management GP, LLC is the general partner of BRC Partners Opportunity Fund, LP. B. Riley Asset Management, a division of B. Riley Capital Management, LLC, is the investment manager of BRC Partners Opportunity Fund, LP. ("BRC"). B. Riley Capital Management, LLC is the sole member of BRC Partners Management GP, LLC and a wholly-owned subsidiary of B. Riley. Mr. Young is the Chief Executive Officer of B. Riley Principal Investments, LLC. ("B. Riley Principal" and together with B. Riley and BRC, the "B. Riley Entities"), a wholly-owned subsidiary of B. Riley. He has voting and dispositive power over the shares held by B. Riley Principal. Mr. Young does not have either voting or investment control over the securities held by the B. Riley and BRC. He disclaims beneficial ownership of the securities held by the B. Riley Entities. /s/ Kenny Young 2019-05-09