X0303 4 2011-03-28 0 0000060714 LSB INDUSTRIES INC LXU 0001260292 BROWN ROBERT C MD 16 SOUTH PENNSYLVANIA AVENUE OKLAHOMA CITY OK 73107 1 0 0 0 Common Stock 2011-03-28 4 S 0 10000 40.00 D 21160 I By Trust and Spouse's Trust Common Stock 2011-03-28 4 S 0 10000 40.00 D 40727 I By Robert C. Brown, M.D., Inc. Nonqualified Stock Option 7.86 2018-11-13 Common Stock 5000 5000 D These shares were sold pursuant to a Rule 10b5-1 sales plan, dated March 10, 2011. These shares are held in a joint account owned by the Robert C. Brown Revocable Trust, DTD 08/27/99, of which the reporting person is settlor and trustee and the Zelda F. Brown Revocable Trust, DTD 08/27/99, of which the reporting person's spouse is settlor and trustee. These shares were sold pursuant to a Rule 10b5-1 sales plan, dated March 10, 2011. Nonqualified Stock Option ("NQSO") granted by the Issuer to the reporting person under the Issuer's 2008 Incentive Stock Plan. The NQSO is for a term of ten years from November 13, 2008, the date of grant, and the exercise price of the NQSO is based on the fair market value of the Issuer's common stock on the date of grant. This NQSO 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 NQSO will be fully vested at the end of year six. Robert C. Brown, M.D. 2011-03-30