X0306 4 2023-01-01 0 0001592058 Party City Holdco Inc. PRTY 0001612135 Vogensen Todd E. C/O PARTY CITY HOLDCO INC. 100 TICE BLVD. WOODCLIFF LAKE NJ 07677 0 1 0 0 Chief Financial Officer Common Stock, par value $0.01 per share ("Common Stock") 2023-01-01 4 F 0 42651 0.37 D 611524 D Represents shares withheld for payment of tax liability arising as a result of the partial settlement of a restricted stock unit award originally reported by the reporting person in a Form 4 filed with the Securities and Exchange Commission on March 16, 2022. /s/ Ian Heller, attorney-in-fact 2023-01-03