A securities fraud class action lawsuit has been filed against NuScale Power Corporation (NYSE:SMR), alleging the company failed to adequately disclose material risks associated with its commercialization partnership with ENTRA1 Energy LLC. The lawsuit targets investors who purchased NuScale securities during the period from May 13, 2025 through November 6, 2025, and contends that the company misrepresented the qualifications and experience of its partner organization.
The litigation was prompted by NuScale's November 6, 2025 announcement of a $495 million payment obligation to ENTRA1, which precipitated a sharp deterioration in the company's financial metrics. The disclosure triggered a general and administrative expense increase of 3,000% and resulted in a $532 million net loss for the quarter. The announcement led to an immediate 14.4% decline in NuScale's stock price on the disclosure date, with shares subsequently declining more than 70% from their class period peak.
Investors seeking to participate in the lawsuit have been advised to contact Kirby McInerney LLP, with a deadline of April 20, 2026 for joining the action. The case represents one of several legal challenges companies in the nuclear energy sector have faced regarding disclosure practices and partnership management.