0001423221 2026-01-06 2026-01-06 false 0001423221 8-K 2026-01-06 QUANEX BUILDING PRODUCTS CORPORATION DE 1-33913 26-1561397 945 Bunker Hill Road, Suite 900 Houston TX 77024 713 961-4600 false false false false Common Stock, par value $0.01 per share NX NYSE false