KRONOS WORLDWIDE INC — Director's Dealing 2012

May 17, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: KRONOS WORLDWIDE INC (KRO)
CIK: 0001257640
Period of Report: 2012-05-17

Reporting Person: SIMMONS GLENN R (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-17	Common Stock $0.01 par value	P	650	$17.3706	Acquired	31462	Direct
2012-05-17	Common Stock $0.01 par value	J	4350	$17.3706	Acquired	21800	Indirect

Footnotes

F1: Open market purchase by the reporting person's spouse.

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.