GPGI Inc. Stockholders Should Contact Robbins LLP in Advance of the September 15, 2026, Lead Plaintiff Deadline in the GPGI, Inc. Class Action

Robbins LLP reminds investors that a securities class action has been filed on behalf of all persons and entities who purchased or otherwise acquired GPGI, Inc. (NYSE: GPGI) Class A common stock between November 3, 2025 and May 6, 2026, inclusive (the "Class Period"). The lawsuit alleges that GPGI, Inc., formerly known as CompoSecure, Inc. (CMPO), misled investors about the value, financial prospects, and anticipated benefits of its acquisition of Husky Technologies Limited ("Husky"). Investors who purchased GPGI securities during the Class Period and suffered significant losses may have legal rights. Investors seeking appointment as lead plaintiff must act by September 15, 2026 .

According to the complaint, CompoSecure announced on November 3, 2025, that it had entered into an agreement to acquire Husky Technologies Limited. The complaint alleges that defendants promoted Husky's purported value, operational and financial strength, and growth prospects in seeking shareholder approval of the acquisition. On January 12, 2026, CompoSecure announced that it had completed the Husky acquisition and would rebrand as GPGI, Inc. The Company's Class A common stock subsequently traded under the ticker GPGI, replacing the former CMPO ticker.

Plaintiff alleges that investors were not told that: defendants had materially overstated the value of Husky; Husky was not on track to achieve the revenue and Adjusted EBITDA targets described in the proxy statement; the financial targets attributed to Husky lacked a reasonable basis in objective fact; and the Husky acquisition was allegedly motivated in part by the potential to generate millions of dollars in fees for Resolute Holdings and individual defendants, rather than creating long-term value for CompoSecure shareholders.

The complaint alleges that the truth concerning the Husky acquisition began to emerge on February 26, 2026, when short seller Jehoshaphat Research published a report alleging that GPGI had overstated Husky's value to obtain shareholder approval for the acquisition. Following publication of the report, GPGI's stock price declined from $23.12 per share on February 26, 2026, to $12.94 per share on May 7, 2026, representing a decline of approximately 44%. According to the complaint, the decline reflected growing investor concerns about the value and financial prospects of the Husky acquisition.

Investors who purchased or otherwise acquired GPGI, Inc. Class A common stock between November 3, 2025 and May 6, 2026 may be eligible to participate in the proposed securities class action. Investors who purchased shares while the Company's stock traded under the former CMPO ticker may also fall within the proposed Class Period, depending on the circumstances of their investment. If you purchased GPGI or CMPO shares during the Class Period and suffered losses, you may have rights under the federal securities laws.

The lead plaintiff is a representative investor appointed by the court to act on behalf of other members of the proposed class and help direct the litigation. Investors do not have to become lead plaintiff to potentially participate in any recovery obtained through the litigation. The deadline for investors seeking appointment as lead plaintiff is September 15, 2026 .

No. Robbins LLP represents investors on a contingency fee basis. Investors seeking additional information about the GPGI securities class action may submit an inquiry , email attorney Aaron Dumas, Jr., or call (800) 350-6003.