CompoSecure, Inc. — Director's Dealing 2025

Aug 14, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CompoSecure, Inc. (CMPO)
CIK: 0001823144
Period of Report: 2025-08-13

Reporting Person: Gourbault Amanda Mandy (Chief Revenue Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-08-13	Class A Common Stock	S	85365	$19.02	Disposed	799668	Direct

Footnotes

F1: The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $18.90 to $19.32, inclusive. The reporting person undertakes to provide CompoSecure, Inc. (the "Issuer"), any securityholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (1) to this Form 4.

F2: Includes (A) 218,960 shares of Class A Common Stock owned by the reporting person, inclusive of shares previously purchased by the reporting person under the Company's Employee Stock Purchase Plan, (B) 63,251 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) 75,000 shares of Class A Common Stock underlying RSUs which will vest on January 1, 2026, (D) 43,658 shares of Class A Common Stock underlying RSUs which will vest on January 1, 2026, (E) 107,129 shares of Class A Common Stock underlying RSUs which will vest ratably on each of January 1, 2026 and January 1, 2027, and (cont'd in FN3)

F3: (con't from FN 2) (F) 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.