SES AI faces class action after 36.8% crash on revenue guidance miss

SES AI Corporation misled investors about its business outlook, causing a 36.8% single-day stock crash when it revealed 2026 revenue guidance of $30 million to $35 million — far below the $51.67 million Wall Street consensus, a class action lawsuit alleges.

"The company overstated its business outlook by exaggerating the potential results of agreements with companies that had limited or no operational capacity," the complaint states. The case, Patel v. SES AI Corporation, et al., is pending in the US District Court for the District of Massachusetts.

The lawsuit covers investors who bought SES securities between Jan. 29, 2025, and March 4, 2026. The complaint alleges SES created the appearance of revenue by purchasing services tied to its own Molecular Universe transactions and faced significant logistics constraints in the fourth quarter of 2025 that materially impacted revenue. The company's weaker-than-expected 2026 guidance confirmed those issues, the suit claims.

The 36.8% decline on March 4 erased roughly $350 million in market capitalization, based on the company's pre-crash valuation of about $950 million. SES, a developer of lithium-metal batteries for electric vehicles, went public via a SPAC merger in 2022 and has yet to generate meaningful product revenue. The lead plaintiff deadline falls on June 26, 2026, giving investors just days to seek appointment as lead plaintiff.

Kahn Swick & Foti LLC and Levi & Korsinsky are among the law firms representing investors. KSF Managing Partner Lewis Kahn said affected shareholders should contact the firm to discuss their legal rights before the deadline.

The lawsuit adds legal risk to a company already struggling with investor confidence after the guidance miss. SES's next quarterly report will be closely watched for any signs of operational improvement or further deterioration in its battery commercialization timeline. The case also heightens scrutiny on other pre-revenue EV and battery SPACs that have used aggressive revenue projections to support valuations.

This article is for informational purposes only and does not constitute investment advice.