X0303 4 2010-09-30 0 0000060714 LSB INDUSTRIES INC LXU 0001374531 Rieker Harold L 16 SOUTH PENNSYLVANIA AVENUE OKLAHOMA CITY OK 73107 0 1 0 0 Vice President/Prin Acctg Off Common Stock 2010-09-30 4 S 0 2000 18.51 D 0 D Incentive Stock Option 7.86 2018-11-13 Common Stock 15000 15000 D Incentive Stock Option 5.10 2015-11-17 Common Stock 1100 1100 D Incentive Stock Option ("ISO") granted by the Issuer to the reporting person under the Issuer's Incentive Stock Option Plans. Each ISO is for a term of ten years from the date of grant. An ISO for 5,000 shares of the Issuer's common stock exercisable at $5.10, with an expiration date of November 17, 2015, was granted to the reporting person on November 17, 2005. This ISO was fully vested on or before December 31, 2005. An ISO for 15,000 shares of the Issuer's common stock exercisable at $7.86, with an expiration date of November 13, 2018, was granted to the reporting person on November 13, 2008. This ISO vests at the end of years one through six in the following amounts: 16.5%, 16.5%, 16.5%, 16.5%, 16.5% and 17.5%. This ISO will be fully vested at the end of year six. As of the date of this report, the total number of shares underlying the two ISOs is 16,100. Harold L. Rieker 2010-09-30