X0306 4 2018-11-01 0001423221 Quanex Building Products CORP NX 0001192324 NOSBAUM LEROY D 1800 WEST LOOP SOUTH, SUITE 1500 HOUSTON TX 77027 1 Common Stock 2018-11-01 4 M 0 3610 0 A 6110 D Common Stock 2018-11-01 4 D 0 3610 15.31 D 2500 D Restricted Stock Units 2018-11-01 4 A 0 5184 0 A Common Stock 5184 24840 D Restricted Stock Units 2018-11-01 4 M 0 3610 0 D Common Stock 3610 21230 D Represents the total number of restricted stock units that were settled in cash pursuant to their terms. Each restricted stock unit represents a contingent right to receive cash in an amount equivalent to the value of one share of NX common stock. The restricted stock unit will vest immediately, but will not become payable until the director's death, disability, or cessation of service on the board, or in the event of a change in control. The restricted stock unit vested immediately and became payable on the one-year anniversary of its grant, pursuant to the payment election made by the grantee. /s/ Paul B. Cornett, Power of Attorney 2018-11-02