Philadelphia, Pennsylvania--(Newsfile Corp. - March 17, 2026) - National plaintiffs' law firm Berger Montague PC announces a class action lawsuit against Eos Energy Enterprises, Inc. (NASDAQ: EOSE) ("Eos" or the "Company") on behalf of investors who purchased or acquired Eos shares during the period from November 5, 2025 through February 26, 2026 (the "Class Period").

Investor Deadline: Investors who purchased or acquired Eos securities during the Class Period may, no later than May 5, 2026, seek to be appointed as a lead plaintiff representative of the class. To learn your rights, CLICK HERE.

Headquartered in Edison, NJ, Eos manufactures energy storage solutions for utility-scale, microgrid-based, and industrial applications.

On February 26, 2026, the Company announced fourth quarter and full-year 2025 results reporting full-year revenue of $114.2 million-well below previous forecasts of $150-$160 million-and an adjusted EBITDA loss of $219 million. Management attributed these results, in part, to "battery line downtime ran well above industry norms" and "the ability for the automated bipolar production to hit quality targets took longer than expected." The Company further disclosed it had "uncovered inefficiencies that result in longer end-to-end production times."

Following this announcement, Eos shares fell $4.39 per share, more than 39%, to close at $6.74 per share on February 26, 2026.

If you are an Eos investor and would like to learn more about this action, CLICK HERE or please contact Berger Montague: Andrew Abramowitz at aabramowitz@bergermontague.com or (215) 875-3015, or Caitlin Adorni at cadorni@bergermontague.com or (267)764-4865.

About Berger Montague
Berger Montague is one of the nation's preeminent law firms focusing on complex civil litigation, class actions, and mass torts in federal and state courts throughout the United States. With more than $2.4 billion in 2025 post-trial judgments alone, the Firm is a leader in the fields of complex litigation, antitrust, consumer protection, defective products, environmental law, employment law, securities, and whistleblower cases, among many other practice areas. For over 55 years, Berger Montague has played leading roles in precedent-setting cases and has recovered over $50 billion for its clients and the classes they have represented. Berger Montague is headquartered in Philadelphia and has offices in Chicago; Malvern, PA; Minneapolis; San Diego; San Francisco; Toronto, Canada; Washington, D.C., and Wilmington, DE.

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Source: Berger Montague