Hsing Michael Insider Trades & Stock Holdings

CEO · Monolithic Power Systems, Inc. · Latest filing Sep 28, 2026

Hsing Michael, CEO at Monolithic Power Systems, Inc. has 1 Form 4 trade on file since Sep 28, 2026. Open-market activity: 0 purchases ($0) and 1 sale ($40.35M), net -$40.35M. Latest filing: disposed of 30K shares of $MPWR on Sep 28, 2026 at $1,344.97.

Trades on file

1

Open-market bought

$0

Open-market sold

$40.35M

Net open-market

-$40.35M

Latest filing

Sep 28, 2026

All insider trades by Hsing Michael

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Sep 28, 2026	$MPWR	Sell (Open-market sale) 10b5-1	30K	$1,344.97	$40.35M			+9.7%			CEO		—

"Buy" means shares acquired on the Form 4 (including grants and option exercises); "Sell" means shares disposed. 1W / 1M / 6M = how the stock moved after the trade.

Stocks Hsing Michael traded

• $MPWR

Frequently asked questions

Has Hsing Michael been buying or selling stock?

Hsing Michael has 0 open-market purchases and 1 open-market sale on file, net -$40.35M. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Hsing Michael's latest insider trade?

disposed of 30K shares of $MPWR on Sep 28, 2026 at $1,344.97.

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.