ATLANTA, GA – – (Globe Newswire – March 6, 2026) – – A shareholder class action lawsuit has been filed against Eos Energy Enterprises, Inc. (“Eos Energy” or the “Company”) (NASDAQ: EOSE). The lawsuit alleges that Defendants issued false and misleading statements and/or failed to disclose material adverse facts regarding Eos Energy’s business, operations, and prospects, including allegations that: (1) the Company was unable to achieve the ramp in production and capacity utilization required to achieve its previously set guidance; (2) Eos Energy’s battery line downtime was running well above industry norms, the design intent of the line, and internal forecasts; (3) the Company was experiencing delays in the ability for its automated bipolar production to hit quality targets; and (4) Eos Energy’s inadequate systems and processes prevented it from ensuring reasonably accurate guidance and that its public disclosures were timely, accurate, and complete.

If you purchased Eos Energy’s shares between November 5, 2025 and February 26, 2026, and experienced a significant loss on that investment, you are encouraged to discuss your legal rights by contacting Corey D. Holzer, Esq. at cholzer@holzerlaw.com, by toll-free telephone at (888) 508-6832, or by visiting the firm’s website at www.holzerlaw.com/case/eos-energy-enterprises/ for more information.

The deadline to ask the court to be appointed lead plaintiff in the case is May 5, 2026.