X0306 4 2021-04-21 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 2021-04-21 4 M 0 312783 0.00 A 2346136 D Common Stock, par value $0.001 per share 2021-04-22 4 S 0 115566 25.82 D 2230570 D Common Stock, par value $0.001 per share 587959 I See footnote. Restricted Stock Units 0.00 2021-04-21 4 M 0 312783 0.00 D Common Stock 312783 277202 D Represents shares of Common Stock sold to satisfy tax liability upon settlement of restricted stock units ("RSUs"). The shares are held by the Mary Ann E. and Steven L. Ortega Family Trust. Each RSU represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's Common Stock. Represents grants of RSUs, of which 312,783 vested, and of which (a) subject to Mr. Ortega's continuous employment or service with the Issuer or an affiliate until the applicable vesting date, 269,849 of the RSUs will vest if, and only if, the volume weighted average trading price of a share of the Issuer's Common Stock equals $9.82 at the end of any rolling twenty (20)-day trading period commencing on or after May 2, 2021, and (b) subject to Mr. Ortega's continuous service as a member of the board of the Issuer, 7,353 of the RSUs will vest on November 2, 2021. /s/ Brad A. Gazaway, as Attorney-in-Fact for Steven L. Ortega 2021-04-23