X0306 4 2020-06-16 0 0001782754 AZEK Co Inc. AZEK 0001234014 BAILEY SALLIE B 1330 W FULTON STREET #350 CHICAGO IL 60607 1 0 0 0 Nonqualified stock option (right to buy) 23.00 2020-06-16 4 A 0 30260 0.00 A 2030-06-16 Class A common stock 30260 30260 D Restricted Stock Unit (RSU) 2020-06-16 4 A 0 6469 0.00 A Class A common stock 6469 6469 D Includes 15,130 options that will vest if the applicable performance metrics are satisfied for the relevant measurement period and 12,104 options that will vest in equal installments on December 1, 2020, 2021, 2022 and 2023, 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. Includes 1,903 RSUs that will vest on the earlier of (x) the one-year anniversary of the date of grant and (y) the Issuer's annual stockholder meeting for the following year and 4,566 RSUs that will vest on June 16, 2023, in each case subject to continued service through the applicable vesting date. /s/ Paul J. Kardish, attorney-in-fact for Sallie B. Bailey 2020-06-18