Company Update

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): May 18, 2026 LSB INDUSTRIES, INC. (Exact name of registrant as specified in its charter)           Delaware 1-7677 73-1015226 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.)     3503 NW 63rd Street , Suite 500 , Oklahoma City , Oklahoma 73116 (Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code (405) 235-4546 Not applicable (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:   Title of each class   Trading Symbol(s)   Name of each exchange on which registered Common Stock, Par Value $.10   LXU   New York Stock Exchange Preferred Stock Purchase Rights   N/A   New York Stock Exchange   Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). 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. ☐       1   Item 8.01 Other Information. On May 18, 2026, LSB Industries, Inc. (the “Company”) announced that it will assume full ownership of the carbon capture and sequestration project currently underway at its El Dorado, Arkansas facility (the “Project”) from Lapis Carbon Solutions, effective immediately. Total consideration and remaining completion capital associated with the Project are estimated at approximately $95 million, with portions of the consideration contingent upon the timely achievement of defined Project milestones and completion activities.   2                                                   SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Company has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Dated: May 21, 2026       LSB INDUSTRIES, INC. By: /s/ Michael J. Foster___________ Name: Michael J. Foster Title: Executive Vice President, General Counsel and Secretary     3