Kaplan Fox & Kilsheimer LLP announced on September 14, 2026, that it has filed a securities class action lawsuit against GPGI, Inc. (NYSE: GPGI). The firm reminded investors who purchased stock between November 3, 2025, and May 6, 2026, to contact the firm by September 14, 2026, to seek appointment as lead plaintiff.
Robbins Geller Rudman & Dowd LLP announced on September 9, 2026, that it has filed a similar securities class action lawsuit against GPGI. The Rosen Law Firm issued a reminder on September 8, urging contact by September 14. Kaplan Fox also issued a reminder on September 8, setting the same deadline. Schall Brown & Schwartz LLP issued a reminder on September 8 with a deadline of September 15, 2026. Robbins LLP reminded investors on September 4, and The DJS Law Group followed on September 7. The Kaplan Fox lawsuit charges GPGI, certain executive officers and directors, and Resolute Holdings Management, Inc., with violations of the Securities Exchange Act of 1934.
Lawsuit allegations and timeline
On November 3, 2025, the company, then named CompoSecure, Inc., announced it had entered into an agreement to acquire Husky Technologies Limited. The deal was completed on January 12, 2026. Plaintiffs allege that defendants made materially false and misleading statements regarding GPGI's business, operations, and prospects during the class period. Specific allegations include:
- Defendants materially overstated the value of Husky Technologies Limited.
- Husky was not on track to achieve the revenue and Adjusted EBITDA targets provided in the Proxy Statement, which lacked a reasonable basis in objective fact.
- A primary motivation for the $5 billion Husky Acquisition was to generate millions of dollars in fees for Resolute Holdings Management, Inc., and individual defendants, rather than creating long-term value for CompoSecure shareholders.
- Positive statements about the company's prospects were materially misleading or lacked a reasonable basis at all relevant times.
- Defendants misrepresented the purported benefits of the acquisition to secure shareholder approval, PIPE funding, and additional management fees, advancing a scheme to transform CompoSecure into a wealth transfer vehicle for Cote, the Cote Family, and Knott.
Financial deterioration validates claims
GPGI's financial performance deteriorated significantly during the class period. On March 12, 2026, GPGI reported fourth quarter 2025 (4Q25) and fiscal year 2025 (FY25) results, citing compressed margins for Husky due to product mix shifts and increased personnel investments. Shares fell approximately 16.4% from $19.74 on March 11, 2026, to $16.51 on March 13, 2026.
On May 7, 2026, GPGI reported first quarter 2026 (1Q26) results, revealing Husky's Adjusted Net Sales were $290.80 million, down 5.2% year-over-year, and Adjusted EBITDA was $38 million, down 40.2% year-over-year. GPGI cut 2026 guidance, lowering Pro Forma Adjusted Net Sales from an initial range of $2.183 billion to $2.228 billion to $1.95 billion to $2.10 billion, and Pro Forma Adjusted EBITDA from $620 million to $650 million to $550 million to $610 million. Shares declined approximately 25.9% from $17.46 on May 6, 2026, to $12.94 on May 7, 2026.
Following a February 26, 2026, short seller report by Jehoshaphat Research claiming Husky's free cash flow was overstated by 90%, GPGI's stock price declined from $23.12 per share to $12.94 per share on May 7, 2026, representing a total decline of approximately 44%.
| Metric |
4Q25 |
FY25 |
1Q26 |
| Net Sales |
$520.80 million |
$1.5687 billion |
$290.80 million |
| Pro Forma Adjusted EBITDA |
$136.10 million |
$373.40 million |
$38 million |
Pro Forma Adjusted EBITDA margins compressed by 318 basis points from 29.3% to 26.1% in 4Q25.
Lead plaintiff process and legal representation
Multiple firms are actively recruiting investors. Key deadlines and contacts are outlined below:
| Firm |
Deadline |
Contact |
| Robbins Geller Rudman & Dowd LLP |
September 14, 2026 |
Ken Dolitsky / Michael Albert — info@rgrdlaw.com / 800/851-7783 |
| The Rosen Law Firm |
September 14, 2026 |
Phillip Kim — case@rosenlegal.com / (866) 767-3653 |
| DJS Law Group |
September 15, 2026 |
David J. Schwartz — David@djslawllp.com / 914-206-9742 |
| Glancy Prongay Wolke & Rotter LLP |
September 14, 2026 |
Charles Linehan — shareholders@glancylaw.com / (310) 201-9150 |
| Kessler Topaz Meltzer & Check, LLP |
September 14, 2026 |
Jonathan Naji — info@ktmc.com / (484) 270-1453 |
| The Law Offices of Frank R. Cruz |
September 14, 2026 |
info@frankcruzlaw.com / 310-914-5007 |
| Pomerantz LLP |
September 14, 2026 |
Danielle Peyton — newaction@pomlaw.com / 646-581-9980 ext. 7980 |
| Robbins LLP |
September 15, 2026 |
Aaron Dumas, Jr. — adumas@robbinsllp.com / (800) 350-6003 |
| Kaplan Fox & Kilsheimer LLP |
September 14, 2026 |
Pamela A. Mayer / Laurence D. King — pmayer@kaplanfox.com / lking@kaplanfox.com / (646) 315-9003 |
| Wolf Haldenstein Adler Freeman & Herz LLP |
September 14, 2026 |
Gregory Stone — classmember@whafh.com / (800) 575-0735 |
| Bragar Eagel & Squire, P.C. |
September 14, 2026 |
Brandon Walker / Melissa Fortunato — investigations@bespc.com / (212) 355-4648 |
| Abraham, Fruchter & Twersky, LLP |
September 14, 2026 |
Jack Fruchter / Michael Klein — jfruchter@aftlaw.com / mklein@aftlaw.com / (212) 634-0602 / (212) 634-0608 |
| Kirby McInerney LLP |
September 14, 2026 |
Lauren Molinaro — investigations@kmllp.com / 212-699-1171 |
| Schall Brown & Schwartz LLP |
September 15, 2026 |
Brian Schall / Andrew Brown / David Schwartz — bschall@schallfirm.com / 310-301-3335 |
| Johnson Fistel, PLLP |
September 14, 2026 |
Jim Baker — jimb@johnsonfistel.com / (619) 814-4471 |
| Bernstein Liebhard LLP |
September 14, 2026 |
Peter Allocco — pallocco@bernlieb.com / (212) 951-2030 |
| The Portnoy Law Firm |
September 15, 2026 |
Lesley F. Portnoy — lesley@portnoylaw.com / 310-692-8883 |
Other firms actively involved include Holzer & Holzer LLC. Robbins Geller Rudman & Dowd LLP ranked #1 on the most recent ISS Securities Class Action Services Top 50 Report, recovering more than $916 million for investors in 2025, marking their fourth #1 ranking in the past five years. In those five years, Robbins Geller recovered $8.4 billion for investors, $3.4 billion more than any other law firm. With 200 lawyers in 10 offices, the firm's attorneys have obtained many of the largest securities class action recoveries in history, including the largest ever, $7.2 billion, in In re Enron Corp. Sec. Litig.
Kaplan Fox & Kilsheimer LLP, founded in 1956, has recovered more than $10 billion for clients nationwide and is widely regarded as one of the nation's premier plaintiffs' securities litigation firms, with offices in New York, Oakland, Los Angeles, Chicago, and New Jersey. 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, $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. Kaplan Fox is recognized by Chambers and Partners, Benchmark Litigation, Super Lawyers, and Lawdragon.
Kessler Topaz Meltzer & Check, LLP states it has recovered over $25 billion for clients and is recognized in Chambers & Partners USA 2026 as a Band 1 Top Firm in Securities and Class Actions, holding Legal 500's Tier 1 Rankings for Securities and M&A Litigation, with offices in Pennsylvania and California. Wolf Haldenstein Adler Freeman & Herz LLP, founded in 1888, brings over 125 years of legal expertise in securities litigation. Bragar Eagel & Squire, P.C. is a nationally recognized law firm with offices in New York, South Carolina, and California. Pomerantz LLP, with offices in New York, Chicago, Los Angeles, London, Paris, and Tel Aviv, is acknowledged as one of the premier firms in corporate, securities, and antitrust class litigation, founded by the late Abraham L. Pomerantz.
The Rosen Law Firm, ranked No. 1 by ISS Securities Class Action Services for number of securities class action settlements in 2017, has recovered billions of dollars for investors, including over $438 million in 2019 alone. The firm achieved the largest ever securities class action settlement against a Chinese Company. Founding partner Laurence Rosen was named by law360 as a Titan of Plaintiffs’ Bar in 2020. Many of the firm’s attorneys have been recognized by Lawdragon and Super Lawyers. Abraham, Fruchter & Twersky, LLP is based in New York and maintains a California office. Kirby McInerney LLP is a New York-based plaintiffs' law firm concentrating in securities, antitrust, whistleblower, and consumer litigation. Schall Brown & Schwartz LLP represents investors around the world, specializing in securities class action lawsuits and shareholder rights litigation, with founding partners Brian Schall, Andrew Brown, and David Schwartz responsible for recovering over a billion dollars for violations of securities laws. Robbins LLP has helped restore more than $1 billion in value to shareholders. Johnson Fistel, PLLP, recognized as one of the Top 10 Plaintiff Law Firms by ISS Securities Class Action Services, recovered approximately $90,725,000 for investors in 2024. Since 1993, Bernstein Liebhard LLP has recovered over $3.5 billion for its clients. The Portnoy Law Firm's founding partner has recovered over $5.5 billion for aggrieved investors.
DJS Law Group's primary focus is to enhance investor return through balanced counseling and aggressive advocacy. As one of the founding partners of Schall Brown & Schwartz LLP, David Schwartz specializes in securities class actions, corporate governance litigation, and domestic/international M&A appraisals. The firm's clients include some of the largest and most sophisticated hedge funds and alternative asset managers in the world.
What the numbers show
The divergence between GPGI's projected accretive value for Husky and the actual financial deterioration highlights the core allegation of the lawsuit. The 40.2% year-over-year drop in Adjusted EBITDA in 1Q26 and the subsequent guidance cuts suggest the acquisition failed to deliver expected operational synergies. The compression in EBITDA margins alongside declining sales indicates structural issues within Husky's business model that were allegedly concealed during the acquisition announcement. The admission by defendants of underlying demand problems and customers rejecting orders on preferred timetables suggests the margin compression may be driven by fundamental demand weakness rather than temporary mix shifts. The aggregate 44% stock decline from February 26 to May 7, 2026, underscores the severity of investor reaction to these revelations.