X0306 5 2022-09-30 0 0 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 2021-12-08 5 G 0 123000 0.00 D 177000 I By Trust Class A Common Stock 2021-12-08 5 G 0 123000 0.00 A 123000 I By Trust Class A Common Stock 2021-12-13 5 G 0 3555 0.00 D 1105095 D Class A Common Stock 236705 I By Trust Class A Common Stock 77207 I By Trust Class A Common Stock 267793 I By Trust Represents shares transferred by The 2020 Jesse Singh Trust, for which the Reporting Person serves as grantor-trustee, to The 2021 Jesse Singh Trust, for which the Reporting Person serves as grantor-trustee. Represents shares held by The 2020 Jesse Singh Trust, for which the Reporting Person serves as grantor-trustee. Represents shares held by The 2021 Jesse Singh Trust, for which the Reporting Person serves as grantor-trustee. Represents shares held by The Jesse Singh 2016 Irrevocable Trust, for which the Reporting Person's spouse serves as trustee. Represents shares held by The Linda Singh Revocable Trust, for which the Reporting Person and his spouse serve as co-trustees. Represents shares held by The Linda S.R. Singh Family Trust, for which the Reporting Person serves as trustee. /s/ Morgan Walbridge, as Attorney-in-Fact for Jesse G. Singh 2022-11-07