GPGI, Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

SCHEDULE 14A

(RULE 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

COMPOSECURE, INC.

(Name of Registrant as Specified in its Charter)

N/A

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):

PROXY STATEMENT

April 18, 2025

Dear Stockholder:

You are cordially invited to the annual meeting of stockholders (the “Annual Meeting”) of CompoSecure, Inc. (the “Company”), which will be held virtually at 10:00 a.m. Eastern Time on May 28, 2025. We have adopted a virtual format for our Annual Meeting to provide a consistent experience to all stockholders regardless of location. You will be able to attend the Annual Meeting and vote during the Annual Meeting via live webcast through the link www.virtualshareholdermeeting.com/cmpo2025.

In connection with the Annual Meeting, you will be asked to consider and vote on certain proposals that are more fully described in the accompanying proxy statement (the “Proxy Statement”). Whether or not you plan to attend the Annual Meeting, we urge you to read the Proxy Statement and consider such information carefully before voting.

THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT OUR STOCKHOLDERS

VOTE “FOR” THE PROPOSALS PRESENTED IN THE PROXY STATEMENT.

Your vote is very important. Even if you plan to attend the Annual Meeting, if you are a stockholder of record of Class A Common Stock (“Common Stock”), please submit your proxy by Internet, mail or telephone as soon as possible to make sure that your shares are represented at the Annual Meeting, or you may submit your proxy at the Annual Meeting. If you hold your shares of Common Stock in “street name” through a bank, broker or other nominee, you must vote in accordance with the voting instructions provided to you by such bank, broker or other nominee, which include instructions for voting by Internet or telephone.

On behalf of the Board of Directors, we thank you for your support of CompoSecure, Inc.

This Proxy Statement is dated April 18, 2025. Holders of record of the Company’s Common Stock at the close of business on April 3, 2025 are entitled to receive notice of, and to vote at, the Annual Meeting.

Instructions on how to vote your shares are contained on the “Important Notice Regarding the Availability of Proxy Materials,” which is expected to be mailed on or about April 18, 2025.

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD ON MAY 28, 2025

To the Stockholders of CompoSecure, Inc. (“we,” “our,” or the “Company”):

NOTICE IS HEREBY GIVEN that the 2025 annual meeting of stockholders of the Company (the “Annual Meeting”) will be held virtually at 10:00 a.m. Eastern Time on May 28, 2025.

Virtual Annual Meeting

In order to facilitate stockholder attendance and participation, after careful consideration, the Company’s Board of Directors (the “Board”) has determined to hold a virtual annual meeting in order to enable stockholders to participate from any location and at no cost to stockholders. We believe this is the right choice for the Company at this time, as it enables engagement with our stockholders, regardless of size, resources, or physical location. We are committed to ensuring that stockholders will be afforded substantially the same rights and opportunities to participate as they would at an in-person meeting. You will be able to attend the Annual Meeting online and vote your shares electronically during the Annual Meeting by visiting www.virtualshareholdermeeting.com/cmpo2025.

To participate in the virtual Annual Meeting, you will need the 16-digit control number included on your “Important Notice Regarding the Availability of Proxy Materials,” proxy card, or voting instruction form. The Annual Meeting webcast will begin promptly at 10:00 a.m. Eastern Time. We encourage you to access the Annual Meeting prior to the start time and you should allow ample time for the check-in procedures. We will have technicians ready to assist you with any technical difficulties you may have accessing the virtual Annual Meeting. A phone number where you can obtain technical assistance will be available on the Annual Meeting website on the day of the Annual Meeting.

Items of Business

At the Annual Meeting, you will be asked to consider and vote upon the following proposals:

The foregoing items of business are more fully described in the accompanying Proxy Statement, which you should read in its entirety and carefully consider prior to casting any votes in connection with such proposals. The Board has set the close of business on April 3, 2025, as the record date (the “Record Date”) for determining stockholders entitled to notice of, and to vote at, the Annual Meeting. A list of the stockholders as of the Record Date will be available for inspection by stockholders, for any purpose germane to the Annual Meeting, at the Company’s offices during normal business hours for a period of 10 days prior to the Annual Meeting. The list will also be made available electronically for inspection by stockholders in attendance at the virtual Annual Meeting.

All stockholders are cordially invited to attend the Annual Meeting virtually. Regardless of whether you plan to attend the Annual Meeting, we hope you will vote as soon as possible. Instructions on how to vote your shares via the Internet are contained on the “Important Notice Regarding the Availability of Proxy Materials,” which is expected to be mailed on or about April 18, 2025. Instructions on how to obtain a paper copy of our Proxy Statement and annual report to stockholders for the fiscal year ended December 31, 2024, are listed on the “Important Notice Regarding the Availability of Proxy Materials.” These materials can also be viewed online by following the instructions listed on our proxy card. If you choose to receive a paper copy of our Proxy Statement and annual report, you may vote your shares by completing and returning the proxy card that will be enclosed.

IMPORTANT NOTICE ON THE AVAILABILITY OF PROXY MATERIALS

FOR THE ANNUAL MEETING TO BE HELD ON MAY 28, 2025.

OUR PROXY STATEMENT AND ANNUAL REPORT FOR THE FISCAL YEAR ENDED

DECEMBER 31, 2024 ARE AVAILABLE AT WWW.PROXYVOTE.COM.

By Order of the Board of Directors

Steven J. FederCorporate Secretary

April 18, 2025

Somerset, New Jersey