¨
|
Rule 13d-1(b)
|
¨
|
Rule 13d-1(c)
|
ý
|
Rule 13d-1(d)
|
1
|
NAME OF REPORTING PERSON
NL Industries, Inc.
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) ¨
(b) ¨
|
||
3
|
SEC USE ONLY
|
||
4
|
CITIZENSHIP OR PLACE OF ORGANIZATION
New Jersey
|
||
NUMBER OF
|
5
|
SOLE VOTING POWER
-0-
|
|
SHARES
BENEFICIALLY
OWNED BY
EACH
|
6
|
SHARED VOTING POWER
17,696,302
|
|
REPORTING
PERSON
WITH
|
7
|
SOLE DISPOSITIVE POWER
-0-
|
|
8
|
SHARED DISPOSITIVE POWER
17,696,302
|
||
9
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
17,696,302
|
||
10
|
CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
SHARES ¨
|
||
11
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
30.5%
|
||
12
|
TYPE OF REPORTING PERSON
CO
|
1
|
NAME OF REPORTING PERSON
Valhi, Inc.
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) ¨
(b) ¨
|
||
3
|
SEC USE ONLY
|
||
4
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
||
NUMBER OF
|
5
|
SOLE VOTING POWER
-0-
|
|
SHARES
BENEFICIALLY
OWNED BY
EACH
|
6
|
SHARED VOTING POWER
46,691,323
|
|
REPORTING
PERSON
WITH
|
7
|
SOLE DISPOSITIVE POWER
-0-
|
|
8
|
SHARED DISPOSITIVE POWER
46,691,323
|
||
9
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
46,691,323
|
||
10
|
CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
SHARES ¨
|
||
11
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
80.6%
|
||
12
|
TYPE OF REPORTING PERSON
CO
|
1
|
NAME OF REPORTING PERSON
TIMET Finance Management Company
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) ¨
(b) ¨
|
||
3
|
SEC USE ONLY
|
||
4
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
||
NUMBER OF
|
5
|
SOLE VOTING POWER
-0-
|
|
SHARES
BENEFICIALLY
OWNED BY
EACH
|
6
|
SHARED VOTING POWER
46,691,323
|
|
REPORTING
PERSON
WITH
|
7
|
SOLE DISPOSITIVE POWER
-0-
|
|
8
|
SHARED DISPOSITIVE POWER
46,691,323
|
||
9
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
46,691,323
|
||
10
|
CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
SHARES ¨
|
||
11
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
80.6%
|
||
12
|
TYPE OF REPORTING PERSON
CO
|
1
|
NAME OF REPORTING PERSON
Titanium Metals Corporation
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) ¨
(b) ¨
|
||
3
|
SEC USE ONLY
|
||
4
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
||
NUMBER OF
|
5
|
SOLE VOTING POWER
-0-
|
|
SHARES
BENEFICIALLY
OWNED BY
EACH
|
6
|
SHARED VOTING POWER
46,691,323
|
|
REPORTING
PERSON
WITH
|
7
|
SOLE DISPOSITIVE POWER
-0-
|
|
8
|
SHARED DISPOSITIVE POWER
46,691,323
|
||
9
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
46,691,323
|
||
10
|
CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
SHARES ¨
|
||
11
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
80.6%
|
||
12
|
TYPE OF REPORTING PERSON
CO
|
1
|
NAME OF REPORTING PERSON
Valhi Holding Company
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) ¨
(b) ¨
|
||
3
|
SEC USE ONLY
|
||
4
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
||
NUMBER OF
|
5
|
SOLE VOTING POWER
-0-
|
|
SHARES
BENEFICIALLY
OWNED BY
EACH
|
6
|
SHARED VOTING POWER
46,691,323
|
|
REPORTING
PERSON
WITH
|
7
|
SOLE DISPOSITIVE POWER
-0-
|
|
8
|
SHARED DISPOSITIVE POWER
46,691,323
|
||
9
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
46,691,323
|
||
10
|
CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
SHARES ¨
|
||
11
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
80.6%
|
||
12
|
TYPE OF REPORTING PERSON
CO
|
1
|
NAME OF REPORTING PERSON
Dixie Rice Agricultural Corporation, Inc.
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) ¨
(b) ¨
|
||
3
|
SEC USE ONLY
|
||
4
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Louisiana
|
||
NUMBER OF
|
5
|
SOLE VOTING POWER
-0-
|
|
SHARES
BENEFICIALLY
OWNED BY
EACH
|
6
|
SHARED VOTING POWER
46,691,323
|
|
REPORTING
PERSON
WITH
|
7
|
SOLE DISPOSITIVE POWER
-0-
|
|
8
|
SHARED DISPOSITIVE POWER
46,691,323
|
||
9
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
46,691,323
|
||
10
|
CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
SHARES ¨
|
||
11
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
80.6%
|
||
12
|
TYPE OF REPORTING PERSON
CO
|
1
|
NAME OF REPORTING PERSON
Contran Corporation
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) ¨
(b) ¨
|
||
3
|
SEC USE ONLY
|
||
4
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
|
||
NUMBER OF
|
5
|
SOLE VOTING POWER
-0-
|
|
SHARES
BENEFICIALLY
OWNED BY
EACH
|
6
|
SHARED VOTING POWER
46,694,009
|
|
REPORTING
PERSON
WITH
|
7
|
SOLE DISPOSITIVE POWER
-0-
|
|
8
|
SHARED DISPOSITIVE POWER
46,694,009
|
||
9
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
46,694,009
|
||
10
|
CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
SHARES ¨
|
||
11
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
80.6%
|
||
12
|
TYPE OF REPORTING PERSON
CO
|
1
|
NAME OF REPORTING PERSON
The Combined Master Retirement Trust
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) ¨
(b) ¨
|
||
3
|
SEC USE ONLY
|
||
4
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Texas
|
||
NUMBER OF
|
5
|
SOLE VOTING POWER
-0-
|
|
SHARES
BENEFICIALLY
OWNED BY
EACH
|
6
|
SHARED VOTING POWER
46,691,323
|
|
REPORTING
PERSON
WITH
|
7
|
SOLE DISPOSITIVE POWER
-0-
|
|
8
|
SHARED DISPOSITIVE POWER
46,691,323
|
||
9
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
46,691,323
|
||
10
|
CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
SHARES ¨
|
||
11
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
80.6%
|
||
12
|
TYPE OF REPORTING PERSON
EP
|
1
|
NAME OF REPORTING PERSON
Harold Simmons Foundation, Inc.
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) ¨
(b) ¨
|
||
3
|
SEC USE ONLY
|
||
4
|
CITIZENSHIP OR PLACE OF ORGANIZATION
Texas
|
||
NUMBER OF
|
5
|
SOLE VOTING POWER
-0-
|
|
SHARES
BENEFICIALLY
OWNED BY
EACH
|
6
|
SHARED VOTING POWER
46,691,323
|
|
REPORTING
PERSON
WITH
|
7
|
SOLE DISPOSITIVE POWER
-0-
|
|
8
|
SHARED DISPOSITIVE POWER
46,691,323
|
||
9
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
46,691,323
|
||
10
|
CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
SHARES ¨
|
||
11
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
80.6%
|
||
12
|
TYPE OF REPORTING PERSON
CO
|
1
|
NAME OF REPORTING PERSON
Harold C. Simmons
|
||
2
|
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) ¨
(b) ¨
|
||
3
|
SEC USE ONLY
|
||
4
|
CITIZENSHIP OR PLACE OF ORGANIZATION
USA
|
||
NUMBER OF
|
5
|
SOLE VOTING POWER
258,720
|
|
SHARES
BENEFICIALLY
OWNED BY
EACH
|
6
|
SHARED VOTING POWER
46,748,865
|
|
REPORTING
PERSON
WITH
|
7
|
SOLE DISPOSITIVE POWER
258,720
|
|
8
|
SHARED DISPOSITIVE POWER
46,748,865
|
||
9
|
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
258,720
|
||
10
|
CHECK IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN
SHARES ý
|
||
11
|
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.4%
|
||
12
|
TYPE OF REPORTING PERSON
IN
|
Item 1(a)
|
Name of Issuer:
|
|
Kronos Worldwide, Inc., a Delaware corporation (the “Company”).
|
Item 1(b)
|
Address of Issuer’s Principal Executive Offices:
|
|
Three Lincoln Centre
|
|
5430 LBJ Freeway, Suite 1700
|
|
Dallas, Texas 75240-2697
|
Items 2(a)
|
Name of Person Filing:
|
|
(1)
|
NL Industries, Inc. (“NL”) by virtue of its direct ownership of shares (“Shares”) of common stock, par value $0.01 per share, of the Company and its indirect ownership of TIMET Finance Management Company (“TFMC”);
|
|
(2)
|
Valhi, Inc. (“Valhi”) by virtue of its direct ownership of Shares, its direct ownership NL and its indirect ownership of TIMET Finance Management Company (“TFMC”);
|
|
(3)
|
TFMC by virtue of its direct ownership of Shares and its direct ownership of NL and Valhi;
|
|
(4)
|
Titanium Metals Corporation (“TIMET”), Valhi Holding Company (“VHC”) and Dixie Rice Agricultural Corporation, Inc. (“Dixie Rice”), The Combined Master Retirement Trust (the “CMRT”) and the Harold Simmons Foundation, Inc. (the “Foundation”) by virtue of their direct or indirect ownership of TFMC, NL or Valhi;
|
|
(5)
|
Contran Corporation (“Contran”) by virtue of its direct ownership of Shares and its indirect ownership of TFMC, NL or Valhi; and
|
|
(6)
|
Harold C. Simmons by virtue of his and his wife’s direct holdings of Shares and his positions with Contran and certain of its related entities (as described in this statement).
|
Item 2(b).
|
Address of Principal Business Office or, if none, Residence:
|
Item 2(c).
|
Citizenship:
|
Item 2(d).
|
Title of Class of Securities:
|
Item 2(e).
|
CUSIP Number:
|
Item 3.
|
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
|
|
(a)
|
¨
|
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
|
|
(b)
|
¨
|
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
|
|
(c)
|
¨
|
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
|
|
(d)
|
¨
|
Investment Company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
|
|
(e)
|
¨
|
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
|
|
(f)
|
¨
|
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
|
|
(g)
|
¨
|
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
|
|
(h)
|
¨
|
A savings association as defined in section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
|
|
(i)
|
¨
|
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
|
|
(j)
|
¨
|
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J);
|
|
(k)
|
¨
|
Group, in accordance with § 240.13d-1(b)(1)(ii)(K).
|
Item 4.
|
Ownership (as of December 31, 2010).
|
Valhi
|
28,995,021
|
NL
|
17,609,635
|
TFMC
|
86,667
|
Contran
|
2,686
|
Harold C. Simmons
|
258,720
|
Harold C. Simmons’ wife
|
54,856
|
Total
|
47,007,585
|
|
(1)
|
NL may be deemed to own beneficially the 17,696,302 Shares (approximately 30.5% of the 57,947,549 Shares outstanding as of December 31, 2010 based on information provided by the Company and hereinafter referred to as the “Outstanding Shares”) that TFMC and NL hold directly;
|
|
(2)
|
Valhi, TFMC, TIMET VHC, Dixie Rice, the CMRT and the Foundation may be deemed to own beneficially the 46,691,323 Shares (approximately 80.6% of the Outstanding Shares) that TFMC, NL and Valhi hold directly;
|
|
(3)
|
Contran, may be deemed to own beneficially the 46,694,009 Shares (approximately 80.6% of the Outstanding Shares) that Contran, TFMC, NL and Valhi hold directly; and
|
|
(4)
|
Harold C. Simmons may be deemed to own beneficially the 47,007,585 Shares (approximately 81.1% of the Outstanding Shares) that Contran, TFMC, NL, Valhi, he and his wife hold directly.
|
|
(c)
|
Number of shares as to which the person has:
|
|
(i)
|
Sole power to vote or to direct the vote:
|
|
(ii)
|
Shared power to vote or to direct the vote:
|
|
(1)
|
NL may be deemed to share the power to vote or direct the disposition of the 17,696,302 Shares (approximately 30.5% of the Outstanding Shares) that TFMC and NL hold directly;
|
|
(2)
|
Valhi, TFMC, TIMET VHC, Dixie Rice, the CMRT and the Foundation may be deemed to share the power to vote or direct the disposition of the 46,691,323 Shares (approximately 80.6% of the Outstanding Shares) that TFMC, NL and Valhi hold directly; and
|
|
(3)
|
Contran may be deemed to share the power to vote or direct the disposition of the 46,694,009 Shares (approximately 80.6% of the Outstanding Shares) that Contran, TFMC, NL and Valhi hold directly; and
|
|
(4)
|
Harold C. Simmons may be deemed to share the power to vote or direct the disposition of the 46,748,865 Shares (approximately 80.7% of the Outstanding Shares) that Contran, TFMC, NL, Valhi and his wife hold directly.
|
|
(iii)
|
Sole power to dispose or direct the disposition of:
|
|
(iv)
|
Shared power to dispose or to direct the disposition of:
|
Item 5.
|
Ownership of Five Percent or Less of a Class.
|
Item 6.
|
Ownership of More than Five Percent on Behalf of Another Person.
|
Item 7.
|
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person.
|
Item 8.
|
Identification and Classification of Members of the Group.
|
Item 9.
|
Notice of Dissolution of Group.
|
Item 10.
|
Certification.
|
|
Signature
|