X0306 4 2020-06-16 0 0001782754 AZEK Co Inc. AZEK 0001594032 Singh Jesse G 1330 W FULTON STREET #350 CHICAGO IL 60607 1 1 0 0 CEO and President Nonqualified stock option (right to buy) 23.00 2020-06-16 4 A 0 796087 0.00 A 2030-06-16 Class A common stock 796087 796087 D Nonqualified stock option (right to buy) 23.00 2020-06-16 4 A 0 162409 0.00 A 2030-06-16 Class A common stock 162409 162409 D Includes 365,436 options that will vest if the applicable performance metrics are satisfied for the relevant measurement period and 86,130 options that will vest on May 26, 2021, subject to continued service through the applicable vesting date. The options will vest in equal installments on June 16, 2021, 2022, 2023 and 2024, subject to continued service through the applicable vesting date. /s/ Paul J. Kardish, attorney-in-fact for Jesse G. Singh 2020-06-18