X0407 4 2023-06-02 0 0001782754 AZEK Co Inc. AZEK 0001814385 VanWinter Scott 1330 W. FULTON STREET SUITE 350 CHICAGO IL 60607 0 1 0 0 Pres. Commercial Segment 0 Class A Common Stock 2023-06-02 4 S 0 45000 24.88 D 304892 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.88 to $24.90, inclusive. The reporting person undertakes to provide to AZEK, any security holder of AZEK, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. /s/ Morgan Walbridge, as Attorney-in-Fact for Scott Van Winter 2023-06-02