Eos Energy Enterprises, Inc. (EOSE) Securities Class Action

The lawsuit is focused on zinc-based battery systems company Eos’s repeated assurances of prospective growth prospects, based in part on representations that its customers provided “a powerful endorsement of our technology and our ability to deliver at scale.”

The complaint alleges that Eos made false and misleading statements while failing to disclose crucial information to investors. This information includes the charge that Eos was unable to achieve the assured ramp in production to achieve scale. The reasons include Eos’ recent admission that its battery line downtime ran above industry norms, design intent of the line, and internal forecasts.

Investors’ expectations were dashed on February 26, 2026, when Eos revealed disastrous FY 2025 financial results and dismal guidance. Among the matters reported, the company’s FY 2025 revenue fell 25% short of what it told investors well into its Q4 2025 to expect.

Eos placed the blame on “certain issues prevented us from delivering our commitments” which included that “battery line downtime ran well above industry norms[.]” Eos also revealed that “the ability for the automated bipolar production to hit quality targets took longer than expected” and “[t]hat drove revenue and lost revenue.”

In reaction, one prominent Wall Street analyst reportedly wrote a sharp critique of Eos’ transparency to investors, questioning how Eos management could confidently reiterate specific financial targets well into the fourth quarter when manufacturing operations were already experiencing known problems.

The market swiftly reacted by sending the price of Eos shares down about 39% and erasing roughly $1.4 billion dollars of the company’s market capitalization in a single day.

FREQUENTLY ASKED QUESTIONS ABOUT THE CASE

What is the EOSE investigation about?

We are investigating when Eos first knew of battery line downtime, other manufacturing problems, and whether the company may have intentionally concealed these issues from investors.

WHAT SHOULD I DO?

I worked at EOSE. What should I do?

If you were an employee of EOSE, you may have valuable information that could be relevant to the investigation. Hagens Berman is one of the nation’s top whistleblower law firms, and has successfully represented many individuals who come forward with information regarding corporate malfeasance. Under the new SEC Whistleblower program, whistleblowers who provide original information may receive rewards totaling up to 30 percent of any successful recovery made by the SEC. For more information, contact Reed Kathrein at 844-916-0895 or [email protected].

There are multiple law firms participating, do I need to contact all of them?

No, you do not need to contact all participating law firms. Generally, class-action investigations and lawsuits are consolidated into a single case to streamline the legal process, and attorneys from only a few law firms are selected to serve in a leadership role on the consolidated case. Hagens Berman has a proven track record of being appointed to leadership roles in complex, multidistrict litigation regarding investor fraud and other consumer rights issues, and your claim will be handled by attorneys who have helped secure approximately $325 billion in class-action settlements on behalf of individuals who have suffered due to corporate malfeasance and the wrongdoing of other powerful institutions.

AM I ELIGIBLE?

What is the threshold amount to be eligible? What are “substantial” losses?

The threshold amount and the definition of "substantial" losses may vary depending on a number of factors specific to the case, including the size of the company, market cap, shares outstanding and who holds them and the damages alleged by the fraud. In general, to be eligible to participate in a class-action lawsuit, you must be able to demonstrate that you suffered financial losses as a result of the alleged wrongdoing and that your losses meet the criteria set by the court or law firm. Fill out the form and submit your losses.

CAN I PARTICIPATE?

Am I affected? What do I need to do to participate?

If you were an investor in EOSE, you may be affected and eligible to participate in the case. To determine your eligibility and potential involvement, fill out the form and submit your losses.

Can any EOSE investor participate?

In most class-action investigations and cases, any investor who meets the eligibility criteria, including purchasing the shares during the relevant period, can participate, regardless of the size of their investment. Fill out the form to find out your rights.

I bought on a non-U.S. Exchange. Can I participate?

No. This investigation only covers shares bought on a U.S. exchange, i.e. NASDAQ or NYSE. Fill out the form to find out your rights.

Am I included if I still hold my shares, or do I need to sell to participate?

Participation is based on purchasing shares during the relevant period, rather than your current holdings. Accordingly, you do not need to sell to participate. Fill out the form to find out your rights.