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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 FORM 10 - K ( Mark One ) X ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 Or TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Delaware ( State of or other Jurisdiction Incorporation or Organization ) LSB INDUSTRIES , INC . ( Exact Name of Registrant as Specified in its Charter ) 3503 NW 63rd Street , Suite 500 , Oklahoma City , Oklahoma ( Address of Principal Executive Offices ) Commission File Number : 1-7677 73-1015226 ( I.R.S. Employer Identification No. ) | 73116 ( Zip Code ) Registrant's Telephone Number , Including Area Code : ( 405 ) 235-4546 Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class Common Stock , Par Value $ .10 Preferred Stock Purchase Rights Yes > No Yes > No Securities registered pursuant to Section 12 ( g ) of the Act : None 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 . 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 Trading Symbol ( s ) LXU N / A Name of each exchange on which registered New York Stock Exchange 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 ( § 232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the Registrant was required to file such reports submit such files ) . Yes ☐ No 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 definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer Non - accelerated filer 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 transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . □ □ ☑ □ 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 . Indicate by check mark whether the Registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . □ Yes > No The aggregate market value of the Registrant's voting common equity held by non - affiliates of the Registrant , computed by reference to the price at which the voting common stock was last sold as of June 30 , 2020 , was approximately $ 25 million . As a result , the Registrant is a non - accelerated filer as of December 31 , 2020. For purposes of this computation , shares of the Registrant's common stock beneficially owned by each executive officer and director of the Registrant and LSB Funding LLC were deemed to be owned by affiliates of the Registrant as of June 30 , 2020. Such determination should not be deemed an admission that such executive officers , directors or entity of our common stock are , in fact , affiliates of the Registrant or affiliates as of the date of this Form 10 - K . As of February 16 , 2021 , the Registrant had 30,037,749 shares of common stock outstanding . DOCUMENTS INCORPORATED BY REFERENCE Portions of the Registrant's proxy statement for its annual meeting of stockholders will be filed with the Securities and Exchange Commission within 120 days after the end of its 2020 fiscal year , are incorporated by reference in Part III .