INVESTOR ALERT: Securities Class Action Filed Against Eos Energy Enterprises, Inc. – Investors Encouraged to Contact Kirby McInerney LLP

NEW YORK--(BUSINESS WIRE)--The law firm of Kirby McInerney LLP announces that a class action lawsuit has been filed on behalf of investors who acquired Eos Energy Enterprises, Inc. (“Eos” or the “Company”) (NASDAQ:EOSE) period of November 5, 2025 through February 26, 2026, inclusive (“the Class Period”).

If you suffered a loss on your Eos investments, you have until May 5, 2026 to request lead plaintiff appointment. Courts do not consider lead plaintiff applications submitted after this deadline. If you choose to take no action, you may remain an absent class member. For more information about the lawsuit:

[CONTACT THE FIRM IF YOU SUFFERED A LOSS]

What Is This Lawsuit About? The lawsuit alleges that (1) the Company was unable to achieve the ramp in production and capacity utilization required to achieve its previously set guidance; (2) the Company’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) the Company’s inadequate systems and processes prevented it from ensuring reasonably accurate guidance and that its public disclosures were timely, accurate, and complete.

On February 26, 2026, Eos reported a substantial net loss of approximately $970 million for fiscal year 2025 and disclosed full‑year 2025 revenue that fell short of the guidance the Company had repeatedly reaffirmed, including as recently as November 2025. At the same time, Eos issued weaker‑than‑expected 2026 revenue guidance. Eos attributed its 2025 results to heavy spending to scale its manufacturing operations, including ramp‑up inefficiencies, automation‑related costs, and large non‑cash financing and asset write‑down charges. Eos attributed the disappointing 2026 revenue forecast to slower‑than‑anticipated production progress and heightened execution risk. On this news, the price of Eos shares declined by $4.39 per share, or approximately 39.4%, from $11.13 per share on February 25, 2026 to close at $6.74 on February 26, 2026.

[LEARN MORE ABOUT THE LAWSUIT]

The Lead Plaintiff Appointment Process. The federal securities laws permit any investor who acquired eligible securities during the class period to seek appointment as lead plaintiff in a class action lawsuit. Courts typically appoint the investor(s) with the largest financial loss in the case and the ability to represent the class rather than investors with simply the largest investment portfolio. Courts regularly appoint individual investors, whether acting alone or as a group, as lead plaintiffs. The rights of any investor who bought shares during the class period are generally already protected. However, lead plaintiffs have the power to influence case strategy and have a say in settlement decisions, as well as decisions concerning allocation of settlement funds among class members.

[LEARN MORE ABOUT THE LEAD PLAINTIFF PROCESS]

What Should I Do? If you purchased or otherwise acquired Eos securities, have information, or would like to learn more about this investigation, please contact Lauren Molinaro of Kirby McInerney LLP by email at [e-mail], or fill out the contact form below, to discuss your rights or interests with respect to these matters at no cost.

Kirby McInerney LLP is a New York-based plaintiffs’ law firm concentrating in securities, antitrust, whistleblower, and consumer litigation. The firm’s efforts on behalf of shareholders in securities litigation have resulted in recoveries totaling billions of dollars. Additional information about the firm can be found at Kirby McInerney LLP’s website.

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