KRONOS WORLDWIDE INC — Director's Dealing 2004

Dec 21, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: KRONOS WORLDWIDE INC (KRO)
CIK: 0001257640
Period of Report: 2004-03-02

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
2004-03-02	Common stock, $0.01 par value per share	J	400	$32.5	Disposed	34337	Indirect
2004-03-02	Common stock, $0.01 par value per share	J	100	$32.4	Disposed	34237	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common stock, $0.01 par value per share	15701494	Indirect
Common stock, $0.01 par value per share	25047507	Indirect
Common stock, $0.01 par value per share	5107770	Indirect
Common stock, $0.01 par value per share	3000	Direct

Footnotes

F1: Open market sale by Reporting Person's spouse.

F2: Directly held by the Reporting Person's spouse. The Reporting Person disclaims beneficial ownership of these shares.

F3: 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.

F4: 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.

F5: Directly held by Tremont LLC. See the Additional Information filed as Exhibit 99 to this statement for a description of the
relationships among the persons joining in this filing.