MONOLITHIC POWER SYSTEMS INC
For the period ended Dec 31, 2025. Filed Feb 27, 2026.
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FY2025 · Filed Feb 27, 2026
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Item 9B. Other Information
| Item 9B. | Other Information |
|---|
10b5-1 Trading Plans
Certain of our executive officers and directors have entered into trading plans pursuant to Rule 10b5-1(c) of the Securities Exchange Act of 1934, 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.
The following table summarizes the adoption of trading plans intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) during the three months ended December 31, 2025:
| Name and Title | Adoption Date | Plan Duration | Intended Sale Amount (in shares) |
|---|---|---|---|
| Deming Xiao, Executive Vice President, Global Operations | November 13, 2025 | Through November 13, 2026 | Up to 80,976 |
| Maurice Sciammas, Executive Vice President, Worldwide Sales and Marketing | November 24, 2025 | Through December 31, 2026 | Up to 42,000 |
| Saria Tseng, Executive Vice President, Strategic Corporate Development, General Counsel and Corporate Secretary | November 28, 2025 | Through November 27, 2026 | Up to 43,673 |
The following table summarizes thetermination of trading plans intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) during the three months ended December 31, 2025:
| Name and Title | Termination Date | Original Plan Duration | Intended Sale Amount (in shares) | Sold Amount (in shares) |
|---|---|---|---|---|
| Saria Tseng, Executive Vice President, Strategic Corporate Development, General Counsel and Corporate Secretary | November 17, 2025 | Through December 31, 2025 | Up to 33,963 | 32,650 |
During the three months ended December 31, 2025, no trading plans intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) were modified, andno other written trading arrangements that are not intended to qualify for the Rule 10b5-1(c) affirmative defense were adopted, modified, or terminated.
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