X0609 4 2026-05-20 0 0001484778 ThredUp Inc. TDUP 0001201583 HALEY TIMOTHY M false C/O THREDUP INC. 969 BROADWAY, SUITE 200 OAKLAND CA 94607 1 0 0 0 0 Class A Common Stock 2026-05-20 4 A 0 37265 0 A 314369 D These shares represent RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. The RSUs vest in full on the earlier of (i) May 20, 2027 or (ii) the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service to the Issuer on such date. /s/ Alon Rotem, Attorney-in-Fact 2026-05-22