X0306 4 2021-06-04 0001825480 Poshmark, Inc. POSH 0001188390 MING JENNY J C/O POSHMARK, INC. 203 REDWOOD SHORES PARKWAY REDWOOD CITY CA 94065 1 Class A Common Stock 2021-06-04 4 C 0 1485 0 A 1485 D Class A Common Stock 2021-06-07 4 C 0 10309 0 A 11794 D Restricted Stock Units 2021-06-04 4 M 0 1485 0 D 2026-06-03 Class A Common Stock 1485 5942 D Class B Common Stock 2021-06-04 4 M 0 1485 0 A Class A Common Stock 1485 11794 D Class B Common Stock 2021-06-04 4 C 0 1485 0 D Class A Common Stock 1485 10309 D Class B Common Stock 2021-06-07 4 C 0 10309 0 D Class A Common Stock 10309 0 D Reflects the voluntary conversion of Class B Common Stock into Class A Common Stock. No shares have been sold by the Reporting Person and the shares remain subject to a Lock-Up Agreement for a period of 180 days following the date of the Final Prospectus relating to the initial public offering of Class A Common Stock of the Issuer pursuant to a Registration Statement filed by the Issuer with the Securities and Exchange Commission. The terms of the Lock-Up Agreement permit the conversion of Class B Common Stock into Class A Common Stock by the Reporting Person during the lock-up period. Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Class B Common Stock. The units are subject to time- and performance-based vesting. The units shall satisfy the time-based vesting as to 33% of the units on June 4, 2020 and as to the remainder in eight quarterly installments thereafter, subject to the Reporting Person's continued board service to the Issuer through each such vesting date. The performance-based vesting condition was satisfied upon the Issuer's initial public offering (as defined in the Issuer's 2011 Stock Option and Grant Plan). Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the Reporting Person, and has no expiration date. /s/ Evan Ferl, Attorney-in-Fact 2021-06-08