X0206 3 2013-12-28 0 0001257640 KRONOS WORLDWIDE INC KRO 0001600851 Harold C. Simmons Family Trust No. 2 THREE LINCOLN CENTER, 5430 LBJ FREEWAY SUITE 1700 DALLAS TX 75240 0 0 1 0 0001600848 Harold C. Simmons Family Trust No. 1 THREE LINCOLN CENTER, 5430 LBJ FREEWAY SUITE 1700 DALLAS TX 75240 0 0 1 0 0001302221 Simmons Annette C 5430 LBJ FREEWAY, SUITE 1700 DALLAS TX 75240 0 0 1 0 0001599736 Simmons Lisa K THREE LINCOLN CENTER, 5430 LBJ FREEWAY SUITE 1700 DALLAS TX 75240 0 0 1 0 0001520515 CONNELLY SERENA S THREE LINCOLN CENTER, 5430 LBJ FREEWAY SUITE 1700 DALLAS TX 75240 0 0 1 0 Common Stock, par value $0.01 per share 57990042 I By Valhi Common Stock, par value $0.01 per share 35219270 I By NL Common Stock, par value $0.01 per share 137672 I By Contran Common Stock, par value $0.01 per share 1571716 D Directly held by Valhi, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationship of additional persons who may be deemed to beneficially own these shares. Directly held by NL Industries, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationship of additional persons who may be deemed to beneficially own these shares. Directly held by Contran Corporation. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationship of additional persons who may be deemed to beneficially own these shares. Consist of 783,840 shares held directly by the estate of Harold C. Simmons of which Annette C. Simmons is the independent executor and the designated legatee of these shares and 787,876 shares she holds directly. See the Additional Information filed as Exhibit 99 to the statement for a description of the relationships among the reporting owners. . Exhibit Index 99 Additional Information Exhibit 24.1 Lisa K. Simmons Power of Attorney Exhibit 24.2 Serena S. Connelly Power of Attorney Exhibit 24.3 Harold C. Simmons Family Trust No. 1 Power of Attorney Exhibit 24.4 Harold C. Simmons Family Trust No. 2 Power of Attorney Exhibit 24.5 Annette C. Simmons Power of Attorney A. Andrew R. Louis, Atorney-in-fact, for Lisa K. Simmons, Co-Trustee of the Harold C. Simmons Family Trust No. 1 2014-02-25 A. Andrew R. Louis, Atorney-in-fact, for Serena S. Connelly, Co-Trustee of the Harold C. Simmons Family Trust No. 1 2014-02-25 A. Andrew R. Louis, Atorney-in-fact, for Lisa K. Simmons, Co-Trustee of the Harold C. Simmons Family Trust No. 2 2014-02-25 A. Andrew R. Louis, Atorney-in-fact, for Serena S.Connelly, Co-Trustee of the Harold C. Simmons Family Trust No. 2 2014-02-25 A. Andrew R. Louis, Atorney-in-fact, for Annette C. Simmons 2014-02-25