X0306 4 2021-06-01 0 0001821806 Leslie's, Inc. LESL 0001830679 Ortega Steven L 2005 EAST INDIAN SCHOOL ROAD PHOENIX AZ 85016 1 0 0 0 Common Stock, par value $0.001 per share 2021-06-01 4 S 0 38859 29.04 D 2461560 D Common Stock, par value $0.001 per share 2021-06-02 4 S 0 67516 29.11 D 2394044 D Common Stock, par value $0.001 per share 2021-06-03 4 S 0 13212 30.08 D 2380832 D Common Stock, par value $0.001 per share 587959 I See footnote. Represents shares of Common Stock automatically sold by a third party equity administrator to satisfy tax liability upon settlement of restricted stock units ("RSUs") on May 28, 2021, as reported on the Reporting Person's Form 4 filed on June 2, 2021. The shares are held by the Mary Ann E. and Steven L. Ortega Family Trust. /s/ Brad A. Gazaway, as Attorney-in-Fact for Steven L. Ortega 2021-06-03