X0306 4 2020-06-16 0 0001782754 AZEK Co Inc. AZEK 0001814380 Skelly Jonathan 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 110130 0.00 A 2030-06-16 Class A common stock 110130 110130 D Restricted Stock Unit (RSU) 2020-06-16 4 A 0 32609 0.00 A Class A common stock 32609 32609 D Nonqualified stock option (right to buy) 23.00 2020-06-16 4 A 0 93698 0.00 A 2030-06-16 Class A common stock 93698 93698 D Includes 55,065 options that will vest if the applicable performance metrics are satisfied for the relevant measurement period, 22,826 options that will vest in equal installments on January 2, 2021, 2022 and 2023 and 17,022 options that will vest in equal installments on August 7, 2020, 2021, 2022, 2023 and 2024, in each case subject to continued service through the applicable vesting date. Each RSU represents a contingent right to receive one share of the Issuer's Class A common stock upon settlement. The RSUs will vest on June 16, 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, Strategy & Execution /s/ Paul J. Kardish, attorney-in-fact for Jonathan M. Skelly 2020-06-18