Kaplan Fox Encourages Investors of GPGI, Inc. (GPGI) to Act Ahead of the Lead Plaintiff Deadline on September 14, 2026

Kaplan Fox & Kilsheimer LLP announces that a class action lawsuit has been filed against GPGI, Inc. f/k/a CompoSecure, Inc. (NYSE: GPGI) (NYSE: CMPO) on behalf of investors that purchased or otherwise acquired GPGI Class A common stock between November 3, 2025 and May 6, 2026 (the "Class Period").

If you are an investor in GPGI and have suffered losses, you may CLICK HERE to contact us. You may also contact Kaplan Fox by emailing [email protected] or by calling (646) 315-9003.

DEADLINE REMINDER: If you are a member of the proposed Class, you may move the court no later than September 14, 2026 to serve as a lead plaintiff for the purported class. If you have losses we encourage you to contact us to learn more about the lead plaintiff process. You need not seek to become a lead plaintiff in order to share in any possible recovery.

According to the complaint, on November 3, 2025, the Company, then named CompoSecure, announced that it had entered into an agreement to acquire Husky Technologies Limited. The deal was later completed on January 12, 2026. The complaint alleges, that throughout the Class Period, the defendants made materially false and misleading statements to investors "overvaluing Husky and misrepresenting the purported benefits of the Husky Acquisition in order to secure shareholder approval of the deal, secure PIPE funding, generate millions of dollars' worth of additional management fees, and advance defendants' fraudulent scheme to transform CompoSecure into a wealth transfer vehicle for Cote, the Cote Family, and Knott."

Kaplan Fox & Kilsheimer LLP is a nationally recognized law firm focused on complex litigation, with offices in New York, Oakland, Los Angeles, Chicago, and New Jersey. Founded in 1956, the firm has spent more than 50 years prosecuting securities, antitrust, and consumer protection actions in federal and state courts nationwide, recovering more than $10 billion for clients and the classes it has represented. Kaplan Fox is widely regarded as one of the nation's premier plaintiffs' securities litigation firms and has received recognition from Chambers and Partners, Benchmark Litigation, Super Lawyers, and Lawdragon. Serving as lead or co-lead counsel in many landmark cases, the firm has secured some of the largest recoveries in the history of securities litigation, including a $2.425 billion recovery on behalf of Bank of America shareholders in In re Bank of America —the largest recovery ever obtained for claims under Section 14(a) of the Securities Exchange Act—$800 million recovered for the Arkansas Teacher Retirement System and other pension funds in ATRS v. Allianz Global Investors , and a $475 million settlement in In re Merrill Lynch . For decades, Kaplan Fox has represented public pension funds, institutional investors, businesses, and individuals in high-stakes litigation. Through its successful advocacy and precedent-setting victories, the firm has helped shape important areas of securities and corporate law while advancing accountability and protecting investor interests.

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and ethical rules. Past results do not guarantee future outcomes. If you have any questions about this Notice, your rights, or your interests, please contact: CONTACT: Pamela A. Mayer KAPLAN FOX & KILSHEIMER LLP 800 Third Avenue, 38th Floor New York, New York 10022 (646) 315-9003 [email protected] Laurence D. King KAPLAN FOX & KILSHEIMER LLP 1999 Harrison Street, Suite 1501 Oakland, California 94612 (415) 772-4704 [email protected] Contacting or submitting information to Kaplan Fox & Kilsheimer LLP does not create an attorney-client relationship, nor an obligation on the part of Kaplan Fox to retain you as a client. https://www.kaplanfox.com/case/gpgi-inc-class-action-a...