(MENAFN- GlobeNewsWire - Nasdaq) SAN DIEGO, Oct. 01, 2025 (GLOBE NEWSWIRE) -- Johnson Fistel, PLLP, a leading stockholder rights law firm, is investigating potential claims on behalf of Monolithic Power Systems, Inc. (NASDAQ: MPWR) against certain officers and directors for breaches of fiduciary duties and violations of federal securities laws.

What is Johnson Fistel Investigating?
A previously filed securities fraud class action Complaint alleges that, Monolithic Power Systems, Inc., via certain of its officers, made false and/or misleading statements and/or failed to disclose that: (i) Monolithic's voltage regulator modules and power management integrated circuits were suffering from significant performance and quality control issues; (ii) these defects had, in turn, negatively impacted the performance of certain products offered by Nvidia in which such products were used; (iii) Monolithic had failed to adequately address and resolve known issues affecting the performance of the power management solutions Monolithic supplied to Nvidia; (iv) Monolithic's relationship with Nvidia - the Company's most important customer - had been irreparably damaged due to the significant performance and quality control problems affecting the products it supplied to Nvidia and Monolithic's failure to adequately address such issues; and (v) as a result of the above, Monolithic was acutely exposed to material undisclosed risks of significant business, financial, and reputational harm.

Stock Purchasers Before February 8, 2024 Have Rights:
Current, long-term stockholders who have continuously held their Monolithic Power Systems shares before February 8, 2024 are encouraged to contact Johnson Fistel to discuss their legal rights in this matter. You can click or copy and paste the following link to join this action:

About Johnson Fistel, PLLP
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. For more information about the firm and its attorneys, please visit .

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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
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