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Monolithic Power Systems Inc. (NASDAQ: MPWR) Securities Fraud Class Action

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CompanyMonolithic Power Systems Inc.
CourtUnited States District Court for the Western District of Washington 
Case Number25-cv-00220
JudgeHonorable James L. Robart
Class PeriodFebruary 8, 2024 through November 8, 2024
Security TypeCommon Stock

Case Background:

This is a federal securities fraud class action lawsuit on behalf of those who purchased or otherwise acquired Monolithic Power Systems, Inc. (“Monolithic”) (NASDAQ: MPWR) common stock between February 8, 2024 and November 8, 2024, inclusive (the “Class Period”). 

The complaint alleges that, throughout the Class Period, Defendants made false and/or misleading statements and/or failed to disclose that: (1) Monolithic’ s voltage regulator modules and power management integrated circuits were suffering from significant performance and quality control issues; (2) these defects had, in turn, negatively impacted the performance of certain products offered by Nvidia in which such products were used; (3) Monolithic had failed to adequately address and resolve known issues affecting the performance of the power management solutions Monolithic supplied to Nvidia; (4) Monolithic’ s relationship with Nvidia 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 (5) as a result of the above, Monolithic was acutely exposed to material undisclosed risks of significant business, financial, and reputational harm. 

Current Status of Case:

On August 25, 2025, the Court appointed Lead Plaintiff and Lead Counsel. This action is ongoing.

If you wish to discuss this action or have any questions concerning this notice or your rights or interests with respect to these matters, please contact Kessler Topaz Meltzer & Check, LLP: Jon Naji, Esq. (484) 270-1453; toll-free at (844) 887-9500; or via e-mail at info@ktmc.com. If you would like additional information about the suit, please click on the link "Submit Your Information" above and fill out the form as promptly as possible.

Complete this form with your transactions in Monolithic Power Systems Inc. common stock between February 8, 2024 and November 8, 2024.

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SUBMIT YOUR INFORMATION
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Date
# of Shares
Price per Share
Date
Principal Amount
Amount Paid
Series or CUSIP
Date
# of Contracts
Price per Contract
Exercise Price
Expiration Date
Did you purchase shares of Monolithic Power Systems Inc. prior to the Class Period?
Are you a current or former employee of Monolithic Power Systems Inc.?
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