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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1257640	Kronos Worldwide Inc	KRO	Industrial Inorganic Chemicals (2810)	760294959

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1037854	C Harold Simmons	5430 Lbj Freeway, Suite 1700 Dallas TX 75240	Chairman Of The Board	Yes	Yes	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock $0.01 Par Value	Acquisiton	2012-01-24	12	$21.33	555,288	No	4	P	Indirect	by Spouse
Common Stock $0.01 Par Value	Acquisiton	2012-01-24	11,288	$21.00	566,576	No	4	P	Indirect	by Spouse
Common Stock $0.01 Par Value	Acquisiton	2012-01-24	69,700	$21.05	636,276	No	4	P	Indirect	by Spouse

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	by Spouse
No	4	P	Indirect	by Spouse
No	4	P	Indirect	by Spouse

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock $0.01 Par Value	57,990,042	Indirect	by Valhi
Common Stock $0.01 Par Value	35,219,270	Indirect	by NL
Common Stock $0.01 Par Value	548,440	Direct
Common Stock $0.01 Par Value	373,334	Indirect	by TFMC
Common Stock $0.01 Par Value	5,372	Indirect	by Contran

Footnotes

Open market purchases by the reporting person's spouse.
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.
Directly held by Valhi, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationship to the reporting person.
Directly held by NL Industries, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationship to the reporting person.
Directly held by TIMET Finance Management Company. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationship to the reporting person.
Directly held by Contran Corporation. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationship to the reporting person.