Lithium-metal battery technology firm SES AI Corp (NYSE: SES) is now confronting a securities fraud class action lawsuit. This follows allegations from a short-seller that the company inflated revenue through related-party transactions and significantly exaggerated the capabilities of its artificial intelligence platform. The deadline for investors to apply to serve as lead plaintiff is June 26, 2026.
The lawsuit has been filed in the U.S. District Court for the District of Massachusetts. It seeks to represent investors who purchased SES AI securities between January 29, 2025, and March 4, 2026. The defendants include the company and certain executives, accused of violating federal securities laws by misleading investors regarding the company's business prospects and revenue sources.
Short-Seller Allegations Spark Investigation
The catalyst for the legal action was a report issued by short-seller Wolfpack Research on December 9, 2025. The report accused SES AI of engaging in "phantom deals" and a problematic joint venture. It alleged that a $45 million memorandum of understanding with AISPEX was effectively worthless, as the counterparty's purported cryptocurrency mining operations in Texas showed minimal activity, with its listed headquarters address occupied by a different company. A joint venture announced with New Energy Materials in October 2025 was also called into question. The report described the partner's claimed Texas manufacturing site as undeveloped swampland, its listed corporate address as a residential home, and stated it had only one U.S. employee, casting doubt on its ability to support a large-scale commercial partnership.
Financial Disclosures Deepen Concerns
The situation worsened on March 4, 2026. SES AI released its fourth-quarter and full-year 2025 financial results, disclosing that logistics constraints had delayed the recognition of approximately $1.5 million in revenue from 2025 into 2026. Furthermore, the company's full-year 2026 revenue guidance was set between $30 million and $35 million, significantly below the analyst consensus estimate of $51.67 million. The following day, the company's stock price plummeted by 36.8%, closing at $1.08—a steep decline from its 52-week high of $3.73.
Multiple law firms have announced their involvement in the class action. The deadline for investors to apply to serve as lead plaintiff remains June 26, 2026.
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