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Michael Hsing, CEO at Monolithic Power Systems, sold MPWR on Sep 28, 2026

Data as of Oct 16

▼ SELL$8.5M6,343 shares at $1,347.15Michael Hsing CEOMPWR Monolithic Power Systems, Inc.
Watch MPWR
Traded
Sep 28, 2026
Disclosed
Sep 30, 2026
Filed
2 days after the trade

Form 4s are due within two business days.

Official filing (SEC Form 4) ↗

The price around the disclosure

Michael Hsing, CEO at Monolithic Power Systems, sold MPWR on Sep 28, 2026TRADEDDISCLOSED
MPWRSimilar stocks (XLK — its sector index fund), rebased to MPWR's price on the disclosure day
MPWR since disclosure
−10.1%
after the sale
Similar stocks (XLK) since disclosure
−6.3%
XLK — its sector index fund

Change in closing price from Sep 30, 2026 (the first trading day on or after disclosure) to Oct 16, 2026. Dividends excluded. Not a return anyone earned.

Our take

None of our tested rules fired on this trade.

Other trades in the same filing

  1. ▼ SELLMichael Hsing CEOMPWR Monolithic Power Systems, Inc.$7.8Mdisclosed Sep 30 · filed 2 days after the trade
  2. ▼ SELLMichael Hsing CEOMPWR Monolithic Power Systems, Inc.$176Kdisclosed Sep 30 · filed 2 days after the trade
  3. ▼ SELLMichael Hsing CEOMPWR Monolithic Power Systems, Inc.$3.9Mdisclosed Sep 30 · filed 2 days after the trade
  4. ▼ SELLMichael Hsing CEOMPWR Monolithic Power Systems, Inc.$1.5Mdisclosed Sep 30 · filed 2 days after the trade
  5. ▼ SELLMichael Hsing CEOMPWR Monolithic Power Systems, Inc.$789Kdisclosed Sep 30 · filed 2 days after the trade
  6. ▼ SELLMichael Hsing CEOMPWR Monolithic Power Systems, Inc.$2.8Mdisclosed Sep 30 · filed 2 days after the trade
  7. ▼ SELLMichael Hsing CEOMPWR Monolithic Power Systems, Inc.$14.8Mdisclosed Sep 30 · filed 2 days after the trade

See every trade on MPWR →