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MONOLITHIC POWER SYSTEMS INC

For the period ended Jun 30, 2025. Filed Aug 4, 2025.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2025 · Filed Aug 4, 2025

MPWR$1,190.44+5.2%Stored close · as of Nov 6, 2026

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Item 5. Other Information

Certain of our executive officers and directors have entered into trading plans pursuant to Rule10b5-1(c) of the Securities Exchange Act of1934, as amended. A trading plan is a written document that pre-establishes the amounts, prices and dates (or formula for determining the amounts, prices and dates) of future purchases or sales of our common stock, including the sale of shares acquired pursuant to the Monolithic Power Systems, Inc.2004 Employee Stock Purchase Plan, amended and restated, and upon vesting of RSUs.

During thethree months ended* June 30, 2025*, no trading plans intended to satisfy the affirmative defense conditions of Rule10b5-1(c) were adopted, modified, or terminated, andno other written trading arrangements that arenot intended to qualify for the Rule10b5-1(c) affirmative defense were adopted, modified, or terminated.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.