Michael Hsing Monolithic Power Systems Inc (MPWR) insider trading activity

Michael Hsing is CEO of MONOLITHIC POWER SYSTEMS INC. Currently has a direct ownership of 918,669 shares of MPWR, which is worth approximately $845 Million. The most recent transaction as insider was on Nov 12, 2025, when has been sold 37,000 shares (Common Stock) at a price of $967.03 per share, resulting in proceeds of $35,780,110. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 919K

12.77% 3M change

7.04% 12M change

Total Value Held $845 Million

Michael Hsing Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Nov 12 2025	SELL Open market or private sale	$35,780,110 $967.03 p/Share	37,000 Reduced 3.87%	918,669 Common Stock
Nov 11 2025	SELL Open market or private sale	$38,380,000 $959.5 p/Share	40,000 Reduced 4.02%	955,669 Common Stock
Oct 30 2025	SELL Payment of exercise price or tax liability	$133,698,936 $1096.63 p/Share	121,918 Reduced 10.91%	995,669 Common Stock
Oct 25 2025	BUY Grant, award, or other acquisition	-	302,920 Added 21.32%	1,117,587 Common Stock
Aug 15 2025	SELL Open market or private sale	$16,805,487 $830.68 p/Share	20,231 Reduced 2.42%	814,667 Common Stock
Feb 18 2025	SELL Open market or private sale	$3,640,000 $700.0 p/Share	5,200 Reduced 0.62%	834,898 Common Stock
Feb 10 2025	SELL Open market or private sale	$1,860,157 $717.1 p/Share	2,594 Reduced 0.31%	840,071 Common Stock

Feb 07 2025	SELL Open market or private sale	$8,374,800 $700.0 p/Share	11,964 Reduced 1.4%	842,665 Common Stock
Jan 24 2025	SELL Open market or private sale	$2,545,200 $700.0 p/Share	3,636 Reduced 0.42%	854,629 Common Stock
Nov 08 2024	SELL Open market or private sale	$2,151,601 $765.15 p/Share	2,812 Reduced 0.33%	858,265 Common Stock
Aug 16 2024	SELL Open market or private sale	$82,327 $823.27 p/Share	100 Reduced 0.01%	864,009 Common Stock
Aug 09 2024	SELL Open market or private sale	$3,443,092 $827.07 p/Share	4,163 Reduced 0.48%	861,069 Common Stock
Aug 08 2024	SELL Open market or private sale	$2,171,708 $778.39 p/Share	2,790 Reduced 0.32%	865,332 Common Stock
Jul 22 2024	SELL Open market or private sale	$7,994,810 $831.58 p/Share	9,614 Reduced 1.1%	868,122 Common Stock
Jul 01 2024	SELL Open market or private sale	$2,143,211 $802.1 p/Share	2,672 Reduced 0.3%	877,736 Common Stock
Jun 03 2024	SELL Open market or private sale	$5,840,960 $730.12 p/Share	8,000 Reduced 0.9%	880,408 Common Stock
May 08 2024	SELL Open market or private sale	$1,948,560 $690.0 p/Share	2,824 Reduced 0.32%	888,408 Common Stock
May 01 2024	SELL Open market or private sale	$5,292,160 $661.52 p/Share	8,000 Reduced 0.89%	891,232 Common Stock
Apr 01 2024	SELL Open market or private sale	$5,430,080 $678.76 p/Share	8,000 Reduced 0.88%	899,232 Common Stock
Mar 01 2024	SELL Open market or private sale	$5,798,960 $724.87 p/Share	8,000 Reduced 0.87%	907,232 Common Stock
Feb 08 2024	SELL Open market or private sale	$1,897,200 $680.0 p/Share	2,790 Reduced 0.3%	915,193 Common Stock
Feb 05 2024	SELL Open market or private sale	$2,430,031 $641.0 p/Share	3,791 Reduced 0.41%	917,983 Common Stock
Feb 01 2024	SELL Open market or private sale	$4,818,720 $602.34 p/Share	8,000 Reduced 0.86%	921,774 Common Stock
Jan 05 2024	SELL Open market or private sale	$4,584,160 $573.02 p/Share	8,000 Reduced 0.85%	929,772 Common Stock
Jan 04 2024	SELL Open market or private sale	$34,203,493 $583.14 p/Share	58,654 Reduced 5.89%	937,772 Common Stock

Michael Hsing

CEO

Kirkland, WA

Institutional Portfolio Updates

Receive a notification when an Institution or Guru buys or sells MPWR shares.

Notify only if

Value

Insider Trading

Get notified when an Monolithic Power Systems Inc insider buys or sells MPWR shares.

Notify only if

Operation

Value

Type

News

Receive news related to MONOLITHIC POWER SYSTEMS INC

Track Activities on MPWR

Account