X0306 4 2023-01-01 0 0001592058 Party City Holdco Inc. PRTY 0001808278 Kulikowsky Denise C/O PARTY CITY HOLDCO INC. 100 TICE BLVD. WOODCLIFF LAKE NJ 07677 0 1 0 0 See Remarks Common Stock, par value $0.01 per share ("Common Stock") 2023-01-01 4 F 0 11767 0.37 D 232777 D Common Stock 10000 I By Spouse 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. The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 of the Securities Exchange Act of 1934 or for any other purpose. Chief People and Administrative Officer /s/ Ian Heller, attorney-in-fact 2023-01-03