X0303 4 2011-03-09 0000055604 KEYSTONE CONSOLIDATED INDUSTRIES INC KYCN 0000024240 CONTRAN CORP 5430 LBJ FREEWAY, SUITE 1700 DALLAS TX 75240 0 0 1 0 0001037854 SIMMONS HAROLD C 5430 LBJ FREEWAY, SUITE 1700 DALLAS TX 75240 0 0 1 0 Common Stock, par value $0.01 per share 2011-03-08 4 P 0 1623798 6.50 A 9086028 D See the Description of the Transaction filed as Exhibit 99.2 to this statement for a description of this transaction. Directly held by Contran Corporation. See the Additional Information filed as Exhibit 99.2 to this statement for a description of the relationship of an additional person who may be deemed to beneficially own these shares. Annette C. Simmons directly holds 13,457 shares of the common stock, par value $0.01 per share, of the issuer. See Additional Information filed as Exhibit 99.2 to this statement for a description of her relationship to Contran Corporation. Exhibit Index Exhibit 99.1 - Description of the Transaction Exhibit 99.2 - Additional Information A. Andrew R. Louis, Secretary, for Contran Corporation 2011-03-09 A. Andrew R. Louis, Attorney-in-fact, for Harold C. Simmons 2011-03-09