CompoSecure, Inc. — Director's Dealing 2025

Sep 11, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CompoSecure, Inc. (CMPO)
CIK: 0001823144
Period of Report: 2025-09-08

Reporting Person: Maes Gregoire (Chief Operating Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-08	Class A Common Stock	A	6370	—	Acquired	785432	Direct
2025-09-08	Class A Common Stock	F	3452	$19.40	Disposed	781980	Direct

Footnotes

F1: Issued to the Reporting Person for no additional consideration pursuant to an earn-out provision in the agreement and plan of merger (the "Merger Agreement") executed in connection with the
acquisition by the issuer (f/k/a Roman DBDR Tech Acquisition Corp.) of CompoSecure Holdings, L.L.C. (the "Merger"), which was completed on December 27, 2021.

F2: The value of these shares were established in the Merger Agreement.

F3: Includes (A) 182,146 shares of Class A Common Stock owned by the reporting person, (B) 94,877 shares of Class A Common Stock underlying restricted stock units ("RSUs"), which will vest in three equal installments on February 26, 2028, February 26, 2030 and February 26, 2032, (C) 62,500 shares of Class A Common Stock underlying RSUs that will vest on January 1, 2026, (D) 43,658 shares of Class A Common Stock underlying RSUs that will vest on January 1, 2026, and (E) 107,129 shares of Class A Common Stock underlying RSUs that will vest ratably on January 1, 2026 and January 1, 2027, subject in each case to the reporting person's continued service as of the applicable vesting date. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.

F4: Includes 291,670 performance-vesting RSUs, which will vest over the applicable performance period based on the achievement of the provided performance targets, as set forth in the respective governing award agreement, subject in each case to the reporting person's continued service as of the applicable vesting date. The RSUs will be settled into Class A Common Stock upon vesting and may be settled net of shares withheld to pay applicable taxes.