SEC Filing Summary for Monolithic Power Systems Inc.

On April 6, 2026, Saria Tseng, EVP & General Counsel of Monolithic Power Systems Inc. (MPWR), reported the sale of various amounts of Common Stock through multiple transactions. These sales were executed as part of a Rule 10b5-1 trading plan adopted on November 28, 2025. The reported sales occurred at weighted average prices ranging from $1,136.69 to $1,180.83. Specifically, Tseng disposed of shares in several tranches, with the number of shares sold in each transaction ranging from 244 to 2036. Following these transactions, the number of shares owned by Tseng decreased significantly. It is important to note that the prices reported are weighted averages, and the reporting person has undertaken to provide full information on individual sale prices upon request. The filing indicates that these sales were made under a pre-arranged trading plan, suggesting they were planned in advance and not based on current market information.