COMPX INTERNATIONAL INC — Director's Dealing 2011

May 4, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMPX INTERNATIONAL INC (CIX)
CIK: 0001049606
Period of Report: 2011-05-04

Reporting Person: SIMMONS HAROLD C (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-04	Class A Common Stock $0.01 par value	P	606	$14.68	Acquired	352243	Direct
2011-05-04	Class A Common Stock $0.01 par value	P	302	$14.75	Acquired	352545	Direct
2011-05-04	Class A Common Stock $0.01 par value	P	9	$14.64	Acquired	352554	Direct
2011-05-04	Class A Common Stock $0.01 par value	P	100	$14.6799	Acquired	352654	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock $0.01 par value	755104	Indirect
Class A Common Stock $0.01 par value	26400	Indirect
Class A Common Stock $0.01 par value	3000	Indirect

Footnotes

F1: 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.

F2: Directly held by the reporting person's spouse. The reporting person disclaims beneficial ownership of any shares of the issuer's Class A common stock that his spouse holds.

F3: Directly held by Kronos Worldwide, Inc. See the Additional Information filed as Exhibit 99 to this statement for a description of the relationship to the reporting person.