X0609 4 2026-09-15 0000060714 LSB INDUSTRIES, INC. LXU 0001580050 Ackerman Jonathan Z. false 3503 NW 63RD ST, STE 500 OKLAHOMA CITY OK 73116 true false false false true Common Stock 2026-09-15 4 P false 1000 11.30 A 11252 D Purchase of stock reported on this Form 4 was executed pusuant to a 10b5-1 trading plan adopted by the Reporting Person on May 13, 2026. This transaction was executed by Jonathan Z. Ackerman in multiple trades at prices ranging from $11.07 to $11.50. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. /s/ Michael J. Foster, Attorney-in-Fact 2026-09-17