X0206 3 2022-03-09 0 0001823144 CompoSecure, Inc. CMPO 0001847224 McLaughlin Steven J. 1521 ALTON RD, #345 MIAMI BEACH FL 33139 0 0 1 0 Class A Common Stock, $0.0001 par value per share 1500000 I See Footnote Reporting Person's amount of securities beneficially owned has remained unchanged since the closing of Issuer's SPAC merger with Roman DBDR Tech Acquisition Corp. Reporting Person's beneficial ownership increased to 10.05% as a result of a reduction in Issuer's outstanding Class A Common Stock on March 9, 2022. Reporting Person's beneficial ownership decreased to 9.92% as a result of an increase in Issuer's Class A Common Stock. As of the date of this filing, based on Issuer's Class A Common Stock outstanding as disclosed on its Form 10-Q filed November 4, 2022, Reporting Person's beneficial ownership has further decreased to 9.52%. Reporting Person has not engaged in any purchase or sale of CMPO Class A Common Stock since his initial purchase in connection with Issuer's SPAC merger with Roman DBDR Tech Acquisition Corp. All of Reporting Person's beneficially owned Class A Common Stock is held indirectly through investment vehicles owned by the Steven J. McLaughlin Revocable Trust, of which Reporting Person is the sole trustee. /s/ Steven J. McLaughlin 2022-12-08