LSB INDUSTRIES, INC.

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

Kristy D. Carver, Senior Vice President and Treasurer

On March 9, 2026, Kristy D. Carver, our Senior Vice President and Treasurer, entered into a Rule 10b5-1 trading plan that is intended to satisfy the affirmative defense of Rule 10b5-1(c) and provides that Ms. Carver, acting through a broker, may sell up to an aggregate of 29,554 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 June 8, 2026 to February 26, 2027. The plan is scheduled toterminate on February 26, 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 Ms. Carver or the broker, or as otherwise provided in the plan.

Michael J. Foster, Executive Vice President, General Counsel and Secretary

On March 11, 2026, Michael J. Foster, our Executive Vice President, General Counsel and Secretary, 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. Foster, acting through a broker, may sell up to an aggregate of 29,800 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 June 10, 2026 to July 30, 2027. The plan is scheduled toterminateon July 30, 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. Foster or the broker, or as otherwise provided in the plan.

Lynn F. White, Member of the Board of Directors

On March 11, 2026, Lynn F. White, a member of ourboard of directors, entered into Rule 10b5-1 trading plan that is intended to satisfy the affirmative defense of Rule 10b5-1(c) and provides that Mr. White, acting through a broker, may sell up to an aggregate of 40,000 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 June 10, 2026 to June 10, 2027. The plan is scheduled toterminate on June 10, 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. White or the broker, or as otherwise provided in the plan.

Cheryl A. Maguire, Executive Vice President and Chief Financial Officer,

On March 12, 2026, Cheryl A. Maguire, our Executive Vice President and Chief Financial Officer, entered into a Rule 10b5-1 trading plan that is intended to satisfy the affirmative defense of Rule 10b5-1(c) and provides that Ms. Maguire, acting through a broker, may sell up to an aggregate of 20,000 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 June 11, 2026 to June 11, 2027. The plan is scheduled toterminateon June 11, 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 Ms. Maguire or the broker, or as otherwise provided in the plan.

Other than as described above, during the three months ended March 31, 2026, none of the Company’s directors or executive officers adopted orterminated 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.