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Berger Montague PC announced a class action lawsuit against Power Solutions International, Inc. (NASDAQ: PSIX) on behalf of investors who purchased or acquired the company’s shares between May 8, 2025 and March 2, 2026. The firm said investors may seek appointment as lead plaintiff no later than May 19, 2026.
The lawsuit alleges that Power Solutions misled investors by overstating its ability to capture sales demand for its power systems solutions—particularly in the data center market—while understating operational challenges and costs tied to expanding manufacturing capacity to meet that demand.
Berger Montague PC cited Power Solutions’ third-quarter 2025 financial results, which it said showed gross margin declining to 23.9%, down 5.0% year over year. The firm attributed the decline, in part, to inefficiencies associated with the company’s accelerated production ramp-up for key data center product lines.
The company also projected full-year 2025 sales growth of 45%, which the announcement described as a slowdown from prior quarterly growth rates.
According to the announcement, following the November 6, 2025 news, Power Solutions’ share price fell $15.55 per share (about 19%), dropping from $81.24 on November 6, 2025 to close at $65.69 on November 7, 2025.
The announcement also cited Power Solutions’ March 2, 2026 disclosure of fourth-quarter and full-year 2025 results. It said gross margin declined 8% year-over-year due to ongoing inefficiencies related to the company’s production ramp-up for data center products.
It further said the company disclosed only modest expected margin improvement in 2026 and acknowledged it was still working to improve supply chain performance and manufacturing cost structures.
Following this news, the announcement stated that Power Solutions shares declined $24.84 per share (about 29%), falling from $85.75 on March 2, 2026 to close at $60.91 on March 3, 2026.
Investors who purchased or acquired Power Solutions securities during the class period may, no later than May 19, 2026, seek to be appointed as lead plaintiff.
Berger Montague PC said it is headquartered in Philadelphia and focuses on complex civil litigation, class actions, and mass torts in federal and state courts across the United States. The firm stated it has more than $2.4 billion in 2025 post-trial judgments.
For more information, the announcement listed the following contacts:
Source: Berger Montague
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