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Insider Trading Arrangements
 3 Months Ended
Jun. 30, 2026
shares
Trading Arrangements, by Individual  
Material Terms of Trading Arrangement
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 June 30, 2026:
Name and TitleAdoption DatePlan DurationIntended Sale Amount (in shares)
Deming Xiao, Executive Vice President, Global Operations
May 19, 2026
Through May 19, 2027
Up to 80,000
Michael Hsing, President, Chief Executive Officer and Director
May 29, 2026
Through May 29, 2027
Up to 60,000
Saria Tseng, Executive Vice President, Strategic Corporate Development, General Counsel and Corporate Secretary
May 29, 2026
Through May 29, 2027
Up to 75,409
The following table summarizes the termination of trading plans intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) during the three months ended June 30, 2026:
Name and TitleTermination DateOriginal Plan DurationIntended Sale Amount (in shares)Sold Amount (in shares)
Deming Xiao, Executive Vice President, Global Operations
May 6, 2026
Through February 19, 2027
Up to 120,000
-
During the three months ended June 30, 2026, no trading plans intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) were modified, and no other written trading arrangements that are not intended to qualify for the Rule 10b5-1(c) affirmative defense were adopted, modified, or terminated.
Non-Rule 10b5-1 Arrangement Adopted false
Non-Rule 10b5-1 Arrangement Terminated false
Deming Xiao, Adoption [Member]  
Trading Arrangements, by Individual  
Name Deming Xiao
Title Executive Vice President, Global Operations
Rule 10b5-1 Arrangement Adopted true
Adoption Date May 19, 2026
Expiration Date May 19, 2027
Arrangement Duration 365 days
Aggregate Available 80,000
Michael Hsing [Member]  
Trading Arrangements, by Individual  
Name Michael Hsing
Title President, Chief Executive Officer and Director
Rule 10b5-1 Arrangement Adopted true
Adoption Date May 29, 2026
Expiration Date May 29, 2027
Arrangement Duration 365 days
Aggregate Available 60,000
Saria Tseng [Member]  
Trading Arrangements, by Individual  
Name Saria Tseng
Title Executive Vice President, Strategic Corporate Development, General Counsel and Corporate Secretary
Rule 10b5-1 Arrangement Adopted true
Adoption Date May 29, 2026
Expiration Date May 29, 2027
Arrangement Duration 365 days
Aggregate Available 75,409
Deming Xiao, Termination [Member]  
Trading Arrangements, by Individual  
Name Deming Xiao
Title Executive Vice President, Global Operations
Rule 10b5-1 Arrangement Terminated true
Termination Date May 6, 2026
Expiration Date February 19, 2027
Aggregate Available 120,000