X0508 4 2023-12-27 0001423221 Quanex Building Products CORP NX 0001205035 DAVIS SUSAN F 945 BUNKER HILL SUITE 900 HOUSTON TX 77024 1 0 Common Stock 2023-12-27 4 S 0 9889 30.7551 D 0 D The price reported in Column 4 is a weighted price. These shares were sold in multiple transactions at prices ranging from $30.600 to $30.9100, inclusive on December 27, 2023. The reporting person undertakes to provide to Quanex Building Products Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. /s/ Paul B. Cornett, Power of Attorney 2023-12-28