X0306 4 2021-06-29 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 2021-06-29 4 S 0 33410 26.81 D 1783155 D Common Stock, par value $0.001 per share 2021-06-29 4 S 0 8251 26.81 D 440359 I See footnote. Represents shares of common stock sold by the Reporting Person pursuant to the underwriters' partial exercise of their overallotment option in connection with the previously announced secondary offering by certain selling stockholders of the Issuer. 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 2021-06-30