X0303 4 2008-06-24 0001049606 COMPX INTERNATIONAL INC CIX 0001037854 SIMMONS HAROLD C 5430 LBJ FREEWAY, SUITE 1700 DALLAS TX 75240 0 0 1 0 Class A Common Stock $0.01 par value 2008-06-24 4 P 0 1000 4.46 A 77000 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 1000 4.47 A 78000 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 100 4.5299 A 78100 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 900 4.53 A 79000 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 600 4.54 A 79600 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 1500 4.55 A 81100 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 200 4.57 A 81300 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 200 4.58 A 81500 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 1000 4.75 A 82500 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 650 4.99 A 83150 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 100 5.00 A 83250 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 200 5.005 A 83450 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 400 5.01 A 83850 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 1550 5.02 A 85400 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 400 5.025 A 85800 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 350 5.03 A 86150 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 1500 5.04 A 87650 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 100 5.05 A 87750 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 550 5.06 A 88300 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 500 5.07 A 88800 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 700 5.08 A 89500 D Class A Common Stock $0.01 par value 2008-06-24 4 P 0 200 5.09 A 89700 D Class A Common Stock $0.01 par value 755004 I by NL Class A Common Stock $0.01 par value 20000 I by Spouse 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. Directly held by the reporting person's spouse. Mr. Simmons disclaims beneficial ownership of any shares of the issuer's common stock that his spouse holds. Exhibit Index Exhibit 99 - Additional Information A. Andrew R. Louis, Attorney-in-fact, for Harold C. Simmons 2008-06-26