KRONOS WORLDWIDE INC — Director's Dealing 2012

May 11, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: KRONOS WORLDWIDE INC (KRO)
CIK: 0001257640
Period of Report: 2012-05-10

Reporting Person: SIMMONS GLENN R (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-10	Common Stock $0.01 par value	A	500	—	Acquired	30812	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock $0.01 par value	12450	Indirect

Footnotes

F1: Shares issued for no cash consideration to directors under the Kronos Worldwide, Inc. 2003 Long-Term Incentive Plan.

F2: Directly held by the reporting person's spouse. The reporting person disclaims beneficial ownership of any shares of the issuer's common stock that his spouse holds.