X0306 4 2021-03-02 0 0000944075 SOCKET MOBILE, INC. SCKT 0001192160 MILLS KEVIN J 39700 EUREKA DRIVE NEWARK CA 94560 1 1 0 0 Chief Executive Officer Common Stock 2021-03-02 2021-03-02 4 F 0 924 10.63 D 156657 D Exempt transaction pursuant to Section 16b-3(e) - payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. All of the shares reported as disposed of in this Form 4 were relinquished by Mr. Mills and cancelled by Socket Mobile Inc. in exchange for Socket Mobile's agreement to pay federal and state tax withholding obligations of Mr. Mills resulting from the vesting of Restricted Stocks. Mr. Mills did not sell or otherwise dispose of any of the shares reported on this Form 4 for any reason other than to cover required taxes. /s/ Kevin Mills 2021-03-04