X0306 4 2022-12-01 0 0001825480 Poshmark, Inc. POSH 0001895244 Brumana Rodrigo C/O POSHMARK INC. 203 REDWOOD SHORES PARKWAY REDWOOD CITY CA 94065 0 1 0 0 Chief Financial Officer Class A Common Stock 2022-12-01 4 M 0 11363 0.00 A 628896 D Class A Common Stock 2022-12-02 4 S 0 2770 17.814 D 626126 D Restricted Stock Units 2022-12-01 4 M 0 11363 0.00 D Class A Common Stock 11363 68183 D Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units (RSUs). This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. 1/8th of the RSUs will vest on September 1, 2022 and each three months thereafter, subject to the Reporting Person's continued service through the applicable vesting date. /s/ Evan Ferl, Attorney-in-Fact 2022-12-05