X0306 4 2020-09-15 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 2020-09-15 2020-09-15 4 S 0 276000 33.25 D 2286417 D Class A Common Stock 86705 I See footnote Represents 86,705 shares of the Issuer's Class A common stock held by Mr. Singh's spouse, Linda Singh, as trustee of The Jesse Singh 2016 Irrevocable Trust, for which Mr. Singh has no voting or investment power, and Mr. Singh disclaims beneficial ownership of these 86,705 shares. /s/ Paul J. Kardish, Attorney-in-Fact for Jesse Singh 2020-09-15