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: Fitzsimmons Timothy Walter (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-08	Class A Common Stock	A	44336	—	Acquired	804125	Direct
2025-09-08	Class A Common Stock	F	19250	$19.40	Disposed	784875	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) 348,464 shares of Class A Common Stock owned by the reporting person, (B) 48,071 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) 30,561
shares of Class A Common Stock underlying RSUs that will vest on January 1, 2026, and (E) 81,438 shares of Class A Common Stock underlying RSUs that will vest ratably on each of January 1, 2026,
and January 1, 2027, subject in each case to the reporting person's continued service as of the applicable vesting date and the terms of a Transition and Consulting Agreement, dated as of June 10, 2025. 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 213,841 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 to the reporting person's continued service as of the applicable vesting date and a Transition and Consulting Agreement, dated as of June 10, 2025. The RSUs will be settled into Class A Common Stock upon vesting and may be settled
net of shares withheld to pay applicable taxes.