Power Solutions International, Inc.

Power Solutions International, Inc. Shareholders Are Encouraged to Reach Out to Johnson Fistel for More Information About Potentially Recovering Their Losses

SAN DIEGO – Johnson Fistel, PLLP is investigating potential claims on behalf of investors of Power Solutions International, Inc. (NASDAQ: PSIX). The investigation focuses on Power Solutions International’s executive officers and whether investor losses may be recovered under federal securities laws.

What if I purchased Power Solutions International securities?

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If you suffered a loss on your investment and would like to inquire about joining an action to recover your loss under the federal securities laws, please complete the form below. The information provided will be held in strict confidence unless and until you authorize us to disclose it.

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Or for more information, contact Jim Baker at jimb@johnsonfistel.com or (619) 814-4471.

There is no cost or obligation to you.

Background of the investigation

On March 3, 2026, Power Solutions announced its fourth quarter and full year 2025 financial results. The Company reported that gross margin in the fourth quarter of 2025 was 21.9%, representing a decrease of approximately 8.0 percentage points from 29.9% in the same period of the prior year, and stated that the reduction in gross margin was attributable to operating inefficiencies associated with its accelerated production ramp-up for data center product lines.

Following these disclosures, Power Solutions common stock fell approximately 25% the next trading day.

Following this disclosure, Power Solutions International’s shares declined sharply as investors reacted to the Company’s reported results and commentary regarding the continued margin pressure.

In light of this disclosure, Johnson Fistel is investigating whether Power Solutions International complied with the federal securities laws. If you suffered losses from your investment in Power Solutions International stock, contact Johnson Fistel.

About Johnson Fistel, PLLP | Securities Fraud & Investor Rights

Johnson Fistel, PLLP is a nationally recognized shareholder-rights law firm with offices in California, New York, Georgia, Idaho, and Colorado. The firm represents individual and institutional investors in shareholder derivative and securities class action lawsuits and also assists foreign investors who purchased shares on U.S. exchanges. To learn more, visit www.johnsonfistel.com.

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In 2024, Johnson Fistel was ranked among the Top 10 Plaintiff Law Firms by ISS Securities Class Action Services. This recognition reflects the firm’s effectiveness in advocating for investors, having recovered approximately $90,725,000 for aggrieved clients in cases where it served as lead or co-lead counsel. This marks the eighth time the firm has been recognized as a top plaintiffs’ securities law firm in the United States, based on the total dollar value of final recoveries.

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Contact

Johnson Fistel, PLLP
501 W. Broadway, Suite 800
San Diego, CA 92101
James Baker, Investor Relations – or – Frank J. Johnson, Esq.
(619) 814-4471 | jimb@johnsonfistel.com | fjohnson@johnsonfistel.com