LSB INDUSTRIES, INC.

Adoption of 10b5-1 Trading Plans by Our Officers and Directors

Mark T. Behrman, President, Chief Executive Officer and Chairman of the Board of Directors

On October 31, 2025, Mark T. Behrman, our President, Chief Executive Officer and a Chairman of our Board of Directors, entered into a Rule 10b5-1 trading plan that is intended to satisfy the affirmative defense of Rule 10b5-1(c) and provides that Mr. Behrman, acting through a broker, may sell up to an aggregate of 250,000 shares of our common stock, subject to adjustments for stock splits, stock combinations, stock dividends and other similar changes to our common stock. Sales of shares under the plan may only occur from January 30, 2026 to February 28, 2027. The plan is scheduled toterminate on February 28, 2027, subject to earlier termination upon the sale of all shares subject to the plan or the expiration of all sale orders under the plan, upon termination by Mr. Behrman or the broker, or as otherwise provided in the plan.

Other than as described above, during the three months ended December 31, 2025, none of the Company’s directors or executive officers adoptedor terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K.