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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 ( Mark One ) 冈 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended October 31 , 2021 or TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 1-33913 FORM 10 - K QUANEX BUILDING PRODUCTS CORPORATION ( Exact name of registrant as specified in its charter ) Delaware ( State or other jurisdiction of incorporation or organization ) Title of each class Common Stock , $ 0.01 par value Large accelerated filer Non - accelerated filer 26-1561397 1800 West Loop South , Suite 1500 , Houston , Texas 77027 ( Address of principal executive offices and zip code ) Registrant's telephone number , including area code : ( 713 ) 961-4600 ( I.R.S. Employer Identification No. ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) NX Securities registered pursuant to Section 12 ( g ) of the Act : NONE Yes No Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes No 区 Indicate by check mark whether the registrant : ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No Name of each exchange on which registered New York Stock Exchange Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes No X .. Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See the definition of “ large accelerated filer , " " accelerated filer , ” “ smaller reporting company , ” and “ emerging growth company " in Rule 12b - 2 of the Exchange Act . ( Check one ) : Accelerated filer Smaller reporting company Emerging growth company If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended period for complying with any new or revised financial accounting standards provided pursuant to Section 7 ( a ) ( 2 ) ( B ) of the Securities Act . ooo No 区 Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . Yes Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . Yes > No The aggregate market value of the voting and non - voting common equity held by non - affiliates as of April 30 , 2021 , computed by reference to the closing price for the Common Stock on the New York Stock Exchange , Inc. on that date , was $ 901,994,657 . Such calculation assumes only the registrant's officers and directors at such date were affiliates of the registrant . At December 8 , 2021 there were outstanding 33,248,039 shares of the registrant's Common Stock , $ 0.01 par value . DOCUMENTS INCORPORATED BY REFERENCE Portions of the Registrant's definitive Proxy Statement for its 2022 Annual Meeting of Stockholders to be filed with the Commission within 120 days of October 31 , 2021 are incorporated herein by reference in Part III of this Annual Report on Form 10 - K .