Exhibit 99.1 Contacts: Investor Relations Media Relations investorrelations@petco.com Benjamin Thiele-Long benjamin.thiele-long@petco.com FOR IMMEDIATE RELEASE: May 22, 2024 Petco Health + Wellness Company, Inc. Reports First Quarter 2024 Earnings Results Q1 2024 Overview • Net revenue of $1.5 billion decreased 1.7 percent year over year • Comparable sales declined 1.2 percent year over year and increased 4.1 percent on a two-year basis • GAAP net loss of$46.5 million, or $(0.17) per share, compared to GAA ...