KRONOS WORLDWIDE INC — Director's Dealing 2007

Dec 6, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: KRONOS WORLDWIDE INC (KRO)
CIK: 0001257640
Period of Report: 2007-12-04

Reporting Person: SIMMONS HAROLD C (Director, Chairman of the Board & CEO, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-12-04	Common Stock $0.01 par value	P	300	$15.51	Acquired	111767	Direct
2007-12-04	Common Stock $0.01 par value	P	500	$15.55	Acquired	112267	Direct
2007-12-04	Common Stock $0.01 par value	P	100	$15.59	Acquired	112367	Direct
2007-12-04	Common Stock $0.01 par value	P	100	$15.68	Acquired	112467	Direct
2007-12-04	Common Stock $0.01 par value	P	300	$15.71	Acquired	112767	Direct
2007-12-04	Common Stock $0.01 par value	P	100	$15.72	Acquired	112867	Direct
2007-12-04	Common Stock $0.01 par value	P	100	$15.75	Acquired	112967	Direct
2007-12-05	Common Stock $0.01 par value	P	100	$15.65	Acquired	113067	Direct
2007-12-05	Common Stock $0.01 par value	P	300	$15.75	Acquired	113367	Direct
2007-12-05	Common Stock $0.01 par value	P	100	$15.63	Acquired	113467	Direct
2007-12-05	Common Stock $0.01 par value	P	200	$15.95	Acquired	113667	Direct
2007-12-05	Common Stock $0.01 par value	P	100	$15.94	Acquired	113767	Direct
2007-12-05	Common Stock $0.01 par value	P	100	$15.93	Acquired	113867	Direct
2007-12-05	Common Stock $0.01 par value	P	600	$16.00	Acquired	114467	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock $0.01 par value	28995021	Indirect
Common Stock $0.01 par value	17516312	Indirect
Common Stock $0.01 par value	5203	Indirect
Common Stock $0.01 par value	36356	Indirect

Footnotes

F1: Directly held by Valhi, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the
relationships among the persons joining in this filing.

F2: Directly held by NL Industries, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description
of the relationships among the persons joining in this filing.

F3: Directly held by TIMET Finance Management Company. See the Additional Information filed as Exhibit 99 to this statement for
a description of the relationships among the persons joining in this filing.

F4: Directly held by the Reporting Person's spouse. The Reporting Person disclaims beneficial ownership of these shares.