ELMSFORD, N.Y.--(BUSINESS WIRE)--Party City Holdco Inc. (the "Company" or "Party City") (NYSE: PRTY) announces that its Chief Executive Officer James M. Harrison will speak at the Goldman Sachs 22nd Annual Global Retailing Conference on Wednesday, September 9th at 2:25 p.m. ET. Mr. Harrison’s presentation can be heard live via webcast on the Internet accessible from the Company's web site, www.investor.partycity.com. Participants should log in approximately 10 minutes prior to the start of the