X0306 4 2022-02-04 0001423221 Quanex Building Products CORP NX 0001651202 LIVINGSTON MARK A 1800 W LOOP SOUTH SUITE 1500 HOUSTON TX 77027 1 VP CAO Controller Common Stock 2022-02-04 4 F 0 1335 21.72 D 12265 D Shares were sold to cover taxes due in connection with the lapse of forfeiture restrictions on restricted stock originally granted to the reporting person on February 4, 2019. /s/ Paul B. Cornett, Power of Attorney 2022-02-07