Eos Energy Enterprises

March 5, 2026

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Jeff Campisi

Jeffrey P. Campisi

JCampisi@kaplanfox.com

Laurence D. King

LKing@kaplanfox.com
Eos Energy Enterprises

Kaplan Fox Alerts Investors of Eos Energy Enterprises (EOSE) to an Investigation of Potential Securities Law Violations

Kaplan Fox & Kilsheimer LLP is investigating potential securities violations against Eos Energy Enterprises (“Eos Energy” or the “Company”) (NASDAQ: EOSE).

CLICK HERE TO RECEIVE MORE INFORMATION ABOUT THIS INVESTIGATION

If you are a Eos Energy investor and have suffered losses, or if you have information that could assist in the Eos Energy investigation, you may CLICK HERE to contact us. You may also contact Kaplan Fox by emailing jcampisi@kaplanfox.comor by calling (212) 329-8571.

On November 5, 2025, after markets closed, Eos Energy announced third quarter financial results and provided outlook for 2025. The Company stated that it “expects full year revenue in the range of $150 million to $160 million[.]” The Company also stated that it’s positioned “to ramp production to an annualized rate of 2 GWh per year by year-end 2025 and more than triple its output in the fourth quarter.”

Then, on February 26, 2026, before the market opened, Eos Energy announced fourth quarter and full year 2025 financial results. The Company disclosed that full year 2025 revenue was $114.2 million. During the subsequent earnings call, John Mahaz, the Chief Operating Officer (“COO”), attributed the results, in part, to that “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 COO further revealed that the Company has “uncovered inefficiencies that result in longer end-to-end production times.”

Following this news, the price of Eos Energy stock declined from a closing price on February 25, 2026 of $11.13 per share to close at $6.74 per share on February 26, 2026, a decline of $4.39 per share, or by 39.4%.

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If you have any questions about this investigation, please contact:

CONTACT:

Jeffrey P. Campisi
KAPLAN FOX & KILSHEIMER LLP
800 Third Avenue, 38th Floor
New York, New York 10022
(212) 329-8571
jcampisi@kaplanfox.com

Laurence D. King
KAPLAN FOX & KILSHEIMER LLP
1999 Harrison Street, Suite 1501
Oakland, California 94612
(415) 772-4704
lking@kaplanfox.com

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