Law firm probes Power Solutions board over margin declines
The Law Offices of Howard G. Smith is investigating Power Solutions International's board for potential fiduciary duty breaches related to gross margin declines and sales growth deceleration. Following Q3 and Q4 2025 results showing margin drops and stock price declines, shareholders who purchased shares before May 2025 are encouraged to contact the firm.

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The Law Offices of Howard G. Smith is investigating potential claims against the board of directors of Power Solutions International, Inc. concerning whether the board breached its fiduciary duties to shareholders. The investigation focuses on disclosures regarding gross margin declines and sales growth deceleration that preceded significant drops in the company's stock price.
On November 6, 2025, Power Solutions released its third quarter 2025 financial results. The company reported that gross margin for the quarter was 23.9%, a decrease of 5.0% year over year. The decline was attributed in part to temporary inefficiencies related to an accelerated production ramp-up for key data center product lines. Additionally, the company anticipated sales growth of 45% for the full year 2025, a sharp deceleration from the 74% year-over-year growth reported in the second quarter and 65% in the third quarter of 2025.
Following this announcement, Power Solutions' stock price fell $15.55, or 19.14%, to close at $65.69 per share on November 7, 2025, on unusually heavy trading volume.
On March 2, 2026, the company announced its fourth quarter and full year 2025 financial results. The press release revealed that gross margin declined 8% year-over-year due to operating inefficiencies related to the accelerated production ramp-up for data center product lines. The company provided an outlook for 2026 that included only moderate margin improvement from products serving data center markets. The firm stated it was executing specific actions to improve supply chain performance and manufacturing cost structures but was only beginning to see measurable improvements expected to build and support margin expansion over time.
Subsequent to these disclosures, Power Solutions stock fell $24.84, or 28.97%, to close at $60.91 on March 3, 2026, on unusually heavy trading volume.
Key Financial Disclosures
| Date | Event | Financial Detail |
|---|---|---|
| November 6, 2025 | Q3 2025 Results | Gross margin 23.9%, down 5.0% YoY |
| November 7, 2025 | Stock Price Drop | Down $15.55 (19.14%) to $65.69 |
| March 2, 2026 | Q4/FY 2025 Results | Gross margin down 8% YoY |
| March 3, 2026 | Stock Price Drop | Down $24.84 (28.97%) to $60.91 |
Shareholders who still hold Power Solutions shares purchased before May 2025 and wish to discuss this matter or inquire about their rights are encouraged to contact The Law Offices of Howard G. Smith.
What is the expected timeline for the manufacturing cost structure improvements to translate into tangible margin expansion?
How will the ongoing legal investigation impact the company's ability to retain executive leadership or secure future financing?
Are the supply chain bottlenecks specific to Power Solutions, or do they indicate broader industry headwinds for data center component suppliers?
























