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MONOLITHIC POWER SYSTEMS, INC.

For the period ended Jun 30, 2026. Filed Aug 5, 2026.

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About this filing

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, 2026 · Filed Aug 5, 2026

MPWR$1,357.60-2.2%Stored close · as of Nov 10, 2026

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Unregistered Sales of Equity Securities and Use of Proceeds

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Issuer Purchases of Equity Securities

In February 2025, our Board of Directors approved a stock repurchase program authorizing us to repurchase up to $500.0 million of our common stock through February 2028. Shares are retired upon repurchase. We repurchased 3,000 shares of our common stock for an aggregate purchase price of $4.0 million during the three months ended June 30, 2026.

The following table represents details of our stock repurchase transactions during the three months ended June 30, 2026:

PeriodTotal Number of Shares PurchasedAverage Price Paid per ShareTotal Number of Shares Purchased as Part of Publicly Announced ProgramApproximate Dollar Value of Shares that May Yet Be Purchased Under the Program
(In thousands, except per share amounts)
May 1, 2026 - May 31, 20261$1,566.811$492,055
June 1, 2026 - June 30, 20262$1,445.692$489,318
Total3$1,482.833

In July 2026, the Board of Directors increased the authorized amount of the repurchase program by an additional $500.0 million.

Stock repurchases under the program may be made through open market repurchases, privately negotiated transactions, or other structures, in accordance with applicable state and federal securities laws, at times and in amounts as management deems appropriate.

The timing and the number of shares of any repurchased common stock will be determined by our management based on the evaluation of market conditions, legal requirements, stock price, and other factors. The repurchase program does not obligate us to purchase any particular number of shares and may be suspended, modified, or discontinued at any time without prior notice.

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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.