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FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

f4cix110809hcs.txt



Exhibit 99 - Additional Information



 Harold C. Simmons and the following persons or entities related to him are

the direct holders of the following percentages of the outstanding shares of

class A common stock (the "Class A Common Stock") of the issuer, CompX

International Inc. ("CompX"):



NL Industries, Inc. ("NL")...................................31.6%

Harold C. Simmons............................................15.0%

Annette C. Simmons............................................1.2%

Kronos Worldwide, Inc. ("Kronos").............................0.1%



 NL directly holds 100%, or 10,000,000 shares, of the issuer's class B

common stock, par value $0.01 per share (the "Class B Common Stock," and

collectively with the Class A Common Stock, the "Common Stock").  The

description of the relative rights of the Common Stock contained in the

issuer's restated certificate of incorporation is hereby incorporated herein by

reference to Exhibit 3.1 of the issuers Registration Statement on Form S-1

(File No. 333-42643).  As a result of its ownership of its shares of Class A

Common Stock and all of the Class B Common Stock, NL currently holds

approximately 86.8% of the combined voting power (98.4% for the election of

directors) of all classes of voting stock of the issuer.



 Harold C. Simmons and the following persons or entities related to him are

the direct holders of the following percentages of the outstanding shares of

common stock of NL:



Valhi, Inc. ("Valhi")........................................83.0%

Harold C. Simmons.............................................2.2%

Annette C. Simmons............................................0.6%

TIMET Finance Management Company ("TFMC").....................0.5%

Kronos..............................................less than 0.1%



Titanium Metals Corporation ("TIMET") is the sole stockholder of TFMC.



 Harold C. Simmons and the following persons or entities related to him are

the direct holders of the following percentages of the outstanding shares of

common stock of Kronos:



Valhi........................................................50.0%

NL...........................................................30.4%

Harold C. Simmons.............................................0.4%

TFMC..........................................................0.3%

Annette C. Simmons............................................0.1%

Contran Corporation ("Contran").....................less than 0.1%



 Harold C. Simmons and the following persons or entities related to him are

the direct holders of the following percentages of the outstanding shares of

common stock of Valhi:



Valhi Holding Company ("VHC")................................92.7%

TFMC..........................................................1.5%

Harold Simmons Foundation, Inc. (the "Foundation")............0.8%

Contran Amended and Restated Deferred Compensation

  Trust (the "CDCT")..........................................0.3%

Harold C. Simmons.............................................0.3%

Annette C. Simmons............................................0.2%

The Combined Master Retirement Trust (the "CMRT").............0.1%

The Annette Simmons Grandchildren's Trust

  (the "Grandchildren's Trust").....................less than 0.1%

Contran.............................................less than 0.1%



 Except as otherwise indicated, Harold C. Simmons and the following persons

or entities related to him are the direct holders of the following percentages

of the outstanding shares of common stock of TIMET:



VHC..........................................................23.6%

Annette C. Simmons...........................................12.3%

CMRT..........................................................8.7%

Harold C. Simmons.............................................3.2%

Kronos........................................................2.4%

Contran.......................................................1.9%

NL............................................................0.8%

Valhi.........................................................0.5%

Grandchildren's Trust...............................less than 0.1%



NL's percentage ownership of the outstanding shares of TIMET common stock

includes 0.3% a wholly owned subsidiary of NL holds directly.



 Dixie Rice Agricultural Corporation, Inc. ("Dixie Rice") is the direct

holder of 100% of the outstanding shares of common stock of VHC.  Contran is the

holder of 100% of the outstanding shares of common stock of Dixie Rice.



     Substantially all of Contran's outstanding voting stock is held by trusts

established for the benefit of certain children and grandchildren of Harold C.

Simmons (the "Trusts"), of which Mr. Simmons is the sole trustee, or is held by

Mr.  Simmons or persons or other entities related to Mr.  Simmons.  As sole

trustee of the Trusts, Mr. Simmons has the power to vote and direct the

disposition of the shares of Contran stock held by the Trusts.  Mr. Simmons,

however, disclaims beneficial ownership of any shares of Contran stock that the

Trusts hold.



 U.S. Bank National Association serves as the trustee of the CDCT.  Contran

established the CDCT as an irrevocable "rabbi trust" to assist Contran in

meeting certain deferred compensation obligations that it owes to Harold C.

Simmons.  If the CDCT assets are insufficient to satisfy such obligations,

Contran is obligated to satisfy the balance of such obligations as they come

due.  Pursuant to the terms of the CDCT, Contran (i) retains the power to vote

the shares of Valhi's common stock held directly by the CDCT, (ii) retains

dispositive power over such shares and (iii) may be deemed the indirect

beneficial owner of such shares.



 Contran sponsors the CMRT, which permits the collective

investment by master trusts that maintain the assets of certain employee

benefit plans Contran and related companies adopt.  Harold C. Simmons is the

sole trustee of the CMRT and a member of the trust investment committee for the

CMRT.  Mr. Simmons is a participant in one or more of the employee benefit

plans that invest through the CMRT.



 The Foundation is a tax-exempt foundation organized for charitable

purposes.  Harold C.  Simmons is the chairman of the board of the Foundation.



 NL, a subsidiary of NL and Kronos directly own 3,604,790 shares, 1,186,200

shares and 574,972 shares, respectively, of Valhi common stock.  As already

stated, Valhi directly holds 83.0% of the outstanding shares of NL common stock

and 50.0% of the outstanding shares of Kronos common stock.  As a result of

Valhi's direct and indirect ownership of NL, its subsidiary and Kronos and

pursuant to Delaware law, Valhi treats the shares of Valhi common stock that NL,

its subsidiary and Kronos own as treasury stock for voting purposes and for the

purposes of this statement such shares are not deemed outstanding.



 TiPro, LLC ("TiPro") directly holds 600,000 shares of TIMET common stock.

TiPro is a wholly owned subsidiary of TIMET.  Pursuant to Delaware law, TIMET

treats these shares of TIMET common stock that TiPro owns as treasury stock for

voting purposes and for purposes of this statement such shares are not deemed

 outstanding.



 Mr. Harold C. Simmons is chairman of the board of Kronos, Valhi, VHC,

Dixie Rice and Contran and chairman of the board and chief executive officer of

NL.



 By virtue of the holding of the offices, the stock ownership and his

services as trustee, all as described above, (a) Mr. Simmons may be deemed to

control the entities described above and (b) Mr. Simmons and certain of such

entities may be deemed to possess indirect beneficial ownership of shares of

the issuer's securities directly held by certain of such other entities.

However, Mr. Simmons disclaims beneficial ownership of, and a pecuniary

interest in, the securities beneficially owned, directly or indirectly, by any

of such entities, except to the extent of his vested beneficial interest, if

any, in the shares the CMRT directly holds.



 Annette C. Simmons is the wife of Harold C. Simmons.  Mr. Simmons may be

deemed to share indirect beneficial ownership of her shares.  Mr. Simmons

disclaims beneficial ownership of all shares that his wife holds directly.

Mrs. Simmons disclaims beneficial ownership of all shares she does not hold

directly.



 Mr. and Mrs. Simmons are each a co-trustee of the Grandchildren's Trust,

the beneficiaries of which are the grandchildren of Mrs. Simmons. They each have

the power to vote and direct the disposition of the shares the trust holds.  Mr.

Simmons and his wife each disclaim beneficial ownership of, and a pecuniary

interest in, any shares that this trust holds.