NL INDUSTRIES INC — Director's Dealing 2007

Oct 30, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COMPX INTERNATIONAL INC (CIX)
CIK: 0001049606
Period of Report: 2007-10-26

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: NATIONAL CITY LINES INC (10% Owner)
Reporting Person: NL INDUSTRIES INC (10% Owner)
Reporting Person: NOA INC (10% Owner)
Reporting Person: VALHI GROUP INC (10% Owner)
Reporting Person: VALHI HOLDING CO (10% Owner)
Reporting Person: SIMMONS HAROLD C (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-10-26	Class A common stock, par value $0.01 per share	J	483600	—	Disposed	0	Indirect
2007-10-26	Class A common stock, par value $0.01 per share	J	2586820	—	Disposed	0	Indirect
2007-10-26	Class B common stock, par value $0.01 per share	J	10000000	—	Disposed	0	Indirect
2007-10-26	Class A common stock, par value $0.01 per share	J	374000	—	Acquired	755004	Indirect
2007-10-26	Class B common stock, par value $0.01 per share	J	10000000	—	Acquired	10000000	Indirect

Footnotes

F1: On October 26, 2007, the issuer purchased (the "Stock Purchase") from TIMET Finance Management Company ("TFMC") pursuant to
a Stock Purchase Agreement dated October 16, 2007 483,600 shares of the issuer's class A common stock ("Class A Common
Stock") for a purchase price of $19.50 per share that was paid in the form of a promissory note in the original principal
amount of $9,430,200 payable by the issuer to TFMC (the "Stock Purchase Promissory Note"). Pursuant to Rule 16b-3
promulgated under the Securities Exchange Act of 1934, as amended, the issuer's board of directors exempted the sale and
purchase in the Stock Purchase from Section 16(b).

F2: Formerly held by TFMC. See the Additional Information filed as Exhibit 99 to this
statement for a description of the relationship of TFMC to the persons joining
in this filing.

F3: On October 26, 2007, CompX Group, Inc. ("CGI") merged (the "Merger") with and into CompX KDL LLC, a wholly owned subsidiary
of the issuer that survived the Merger ("CompX KDL"). Pursuant to the Merger, among other things, 2,586,820 shares of Class
A Common Stock and 10.0 million shares of the issuer's class B common stock, par value $0.01 per share (the "Class B Common
Stock"), owned by CGI immediately prior to Merger were automatically canceled and the issuer issued to NL Industries, Inc.,
a former stockholder of CGI that is related to the issuer ("NL"), 374,000 new shares of CompX Class A Common Stock and
10,000,000 new shares of CompX Class B Common Stock.

Pursuant to Rule 16b-3, the issuer's board of directors exempted the cancellation in the Merger of the shares of Class A and
Class B Common Stock formerly held by CGI and the issuance in the Merger of the Class A and Class B Common Stock to NL.

F4: Formerly held by CGI. See the Additional Information filed as Exhibit 99 to this statement for a description of
the relationship of CGI to the persons joining in this filing.

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