NL INDUSTRIES INC — Director's Dealing 2006

Mar 24, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMPX INTERNATIONAL INC (CIX)
CIK: 0001049606
Period of Report: 2006-03-22

Reporting Person: CONTRAN CORP (10% Owner)
Reporting Person: VALHI INC /DE/ (10% Owner)
Reporting Person: DIXIE RICE AGRICULTURE CORP INC (10% Owner)
Reporting Person: SOUTHWEST LOUISIANA LAND CO INC (10% Owner)
Reporting Person: TIMET FINANCE MANAGEMENT CO (10% Owner)
Reporting Person: TITANIUM METALS CORP (10% Owner)
Reporting Person: NATIONAL CITY LINES INC (10% Owner)
Reporting Person: NL INDUSTRIES INC (10% Owner)
Reporting Person: CompX Group, Inc. (10% Owner)
Reporting Person: SIMMONS HAROLD C (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-03-22	Class A Common Stock $0.01 par value	J	1300	$14.7	Acquired	238404	Indirect
2006-03-22	Class A Common Stock $0.01 par value	J	200	$14.4	Acquired	238604	Indirect
2006-03-22	Class A Common Stock $0.01 par value	J	500	$14.54	Acquired	239104	Indirect
2006-03-22	Class A Common Stock $0.01 par value	J	500	$14.53	Acquired	239604	Indirect
2006-03-22	Class A Common Stock $0.01 par value	J	100	$14.58	Acquired	239704	Indirect
2006-03-22	Class A Common Stock $0.01 par value	J	100	$14.59	Acquired	239804	Indirect
2006-03-22	Class A Common Stock $0.01 par value	J	800	$14.79	Acquired	240604	Indirect
2006-03-22	Class A Common Stock $0.01 par value	J	2200	$14.75	Acquired	242804	Indirect
2006-03-22	Class A Common Stock $0.01 par value	J	500	$14.83	Acquired	243304	Indirect
2006-03-22	Class A Common Stock $0.01 par value	J	100	$14.84	Acquired	243404	Indirect
2006-03-23	Class A Common Stock $0.01 par value	J	100	$14.69	Acquired	243504	Indirect
2006-03-23	Class A Common Stock $0.01 par value	J	3100	$14.7	Acquired	246604	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock $0.01 par value	483600	Indirect
Class A Common Stock $0.01 par value	2586820	Indirect

Footnotes

F1: Open market purchase 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.

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 CompX Group, 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.