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: Lowe Adam Joseph (Chief Product & Innov. Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-08	Class A Common Stock	A	27738	—	Acquired	1508774	Direct
2025-09-08	Class A Common Stock	F	14116	$19.40	Disposed	1494658	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) 534,679 shares of Class A Common Stock owned by the reporting person, (B) 175,444 shares of Class A Common Stock underlying the RSUs that will vest on January 1, 2026, (C) 51,064 shares of Class A Common Stock underlying the RSUs that will vest on January 1, 2026, (D) 172,927 shares of Class A Common Stock underlying the RSUs that will vest on January 1, 2026, and (E) 147,960 shares of Class A Common Stock underlying RSUs that will vest in three equal installments on February 26, 2028, February 26, 2030 and February 26, 2032, 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 412,584 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.