X0306 4 2020-12-04 0 0001782754 AZEK Co Inc. AZEK 0001594032 Singh Jesse G 1330 W. FULTON STREET SUITE 350 CHICAGO IL 60607 1 1 0 0 CEO and President Class A Common Stock 2020-12-04 4 A 0 18968 0.00 A 2305385 D Non-qualified stock options (right-to-buy) 34.27 2020-12-04 4 A 0 55273 0.00 A 2030-12-04 Class A Common Stock 55273 55273 D Consists of restricted stock units (RSU). RSUs will vest in three equal annual installments beginning on the first anniversary of the grant date subject to continued service through the applicable vesting date. Non-qualified stock options vest in three equal annual installments beginning on the first anniversary of the grant date subject to continued service through the applicable vesting date. /s/ Paul J. Kardish as attorney-in-fact for Jesse G. Singh 2020-12-08