X0306 4 2020-06-16 0 0001782754 AZEK Co Inc. AZEK 0001533344 Kardish Paul J. 1330 W FULTON STREET #350 CHICAGO IL 60607 0 1 0 0 See Remarks Nonqualified stock option (right to buy) 23.00 2020-06-16 4 A 0 167217 0.00 A 2030-06-16 Class A common stock 167217 167217 D Nonqualified stock option (right to buy) 23.00 2020-06-16 4 A 0 31233 0.00 A 2030-06-16 Class A common stock 31233 31233 D Includes 83,608 options that will vest if the applicable performance metrics are satisfied for the relevant measurement period and 83,609 options that will vest in equal installments on September 3, 2020, 2021, 2022, 2023 and 2024, 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. Senior Vice President and Chief Legal Officer /s/ Paul J. Kardish 2020-06-18