SEC Insider Transactions from CHANG KUO WEI HERBERT.

Last updated: 2026-03-14 11:47 UTC | Total transactions: 15

CHANG KUO WEI HERBERT, an insider at Monolithic Power Systems ($MPWR), made five open market sales of company shares over the last year, totaling $349 thousand. His most recent sale occurred on November 25, 2025. These transactions rank 7,245th among 11,678 individual insiders in our database, where the average sale amount hits 8.6 million across about 6.4 transactions. He recorded no open market purchases during this period.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Feb. 3, 2026 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found A Common Stock 189 $0.00 615.0000 48,042,000 44.37% 0.00%
Nov. 25, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 100 $896.97 426.0000 48,042,000 19.01% 0.00%
Nov. 21, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 100 $873.97 526.0000 48,042,000 15.97% 0.00%
May 13, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 50 $738.00 626.0000 48,835,000 7.40% 0.00%
May 12, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 100 $698.00 676.0000 48,835,000 12.89% 0.00%
May 8, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 100 $650.00 776.0000 48,835,000 11.42% 0.00%
Feb. 4, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found A Common Stock 335 $0.00 876.0000 48,835,000 61.92% 0.00%
Aug. 15, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 100 $888.88 641.0000 48,771,000 13.50% 0.00%
Aug. 15, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 100 $898.00 541.0000 48,771,000 15.60% 0.00%
May 20, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 200 $750.00 741.0000 48,771,000 21.25% 0.00%
May 15, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 100 $740.00 941.0000 48,771,000 9.61% 0.00%
May 15, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 100 $730.00 1,041.0000 48,771,000 8.76% 0.00%
Feb. 29, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 250 $706.34 1,141.0000 48,771,000 17.97% 0.00%
Feb. 22, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found S Common Stock 250 $750.00 1,391.0000 48,771,000 15.23% 0.00%
Feb. 6, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR CHANG KUO WEI HERBERT Not found A Common Stock 348 $0.00 1,641.0000 48,771,000 26.91% 0.00%