Theodore Blegen Monolithic Power Systems Inc (MPWR) insider trading activity

Theodore Blegen is EVP and CFO of MONOLITHIC POWER SYSTEMS INC. Currently has a direct ownership of 71,332 shares of MPWR, which is worth approximately $65.6 Million. The most recent transaction as insider was on Dec 01, 2025, when has been sold 3,000 shares (Common Stock) at a price of $905.29 per share, resulting in proceeds of $2,715,870. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 71.3K

74.24% 3M change

33.47% 12M change

Total Value Held $65.6 Million

THEODORE BLEGEN Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Dec 01 2025	SELL Open market or private sale	$2,715,870 $905.29 p/Share	3,000 Reduced 4.04%	71,332 Common Stock
Nov 03 2025	SELL Open market or private sale	$3,076,200 $1025.4 p/Share	3,000 Reduced 3.88%	74,332 Common Stock
Oct 30 2025	SELL Payment of exercise price or tax liability	$52,965,035 $1096.63 p/Share	48,298 Reduced 38.44%	77,332 Common Stock
Oct 25 2025	BUY Grant, award, or other acquisition	-	87,690 Added 41.11%	125,630 Common Stock
Oct 01 2025	SELL Open market or private sale	$2,730,990 $910.33 p/Share	3,000 Reduced 7.33%	37,940 Common Stock
Sep 02 2025	SELL Open market or private sale	$2,440,860 $813.62 p/Share	3,000 Reduced 6.83%	40,939 Common Stock
Aug 01 2025	SELL Open market or private sale	$2,250,000 $750.0 p/Share	3,000 Reduced 6.39%	43,939 Common Stock

Jul 01 2025	SELL Open market or private sale	$4,500,000 $750.0 p/Share	6,000 Reduced 11.33%	46,939 Common Stock
Feb 10 2025	SELL Open market or private sale	$381,497 $717.1 p/Share	532 Reduced 1.0%	52,912 Common Stock
Dec 09 2024	SELL Open market or private sale	$1,500,000 $600.0 p/Share	2,500 Reduced 4.47%	53,444 Common Stock
Nov 08 2024	SELL Open market or private sale	$561,620 $765.15 p/Share	734 Reduced 1.3%	55,944 Common Stock
Nov 01 2024	SELL Open market or private sale	$1,929,450 $771.78 p/Share	2,500 Reduced 4.22%	56,678 Common Stock
Oct 01 2024	SELL Open market or private sale	$2,272,575 $909.03 p/Share	2,500 Reduced 4.05%	59,178 Common Stock
Sep 03 2024	SELL Open market or private sale	$2,261,225 $904.49 p/Share	2,500 Reduced 3.9%	61,678 Common Stock
Aug 08 2024	SELL Open market or private sale	$566,667 $778.39 p/Share	728 Reduced 1.12%	64,178 Common Stock
Aug 01 2024	SELL Open market or private sale	$2,131,850 $852.74 p/Share	2,500 Reduced 3.71%	64,906 Common Stock
Jul 22 2024	SELL Open market or private sale	$2,145,476 $831.58 p/Share	2,580 Reduced 3.69%	67,406 Common Stock
Jul 01 2024	SELL Open market or private sale	$2,006,625 $802.65 p/Share	2,500 Reduced 3.45%	69,986 Common Stock
Jun 10 2024	SELL Open market or private sale	$62,299 $741.66 p/Share	84 Reduced 0.12%	72,656 Common Stock
Jun 03 2024	SELL Open market or private sale	$1,765,298 $730.67 p/Share	2,416 Reduced 3.23%	72,486 Common Stock
May 08 2024	SELL Open market or private sale	$508,515 $689.98 p/Share	737 Reduced 0.97%	74,986 Common Stock
May 01 2024	SELL Open market or private sale	$1,659,150 $663.66 p/Share	2,500 Reduced 3.2%	75,723 Common Stock
Apr 01 2024	SELL Open market or private sale	$1,695,075 $678.03 p/Share	2,500 Reduced 3.1%	78,223 Common Stock
Mar 01 2024	SELL Open market or private sale	$1,813,925 $725.57 p/Share	2,500 Reduced 3.0%	80,723 Common Stock
Feb 08 2024	SELL Open market or private sale	$495,040 $680.0 p/Share	728 Reduced 0.87%	83,173 Common Stock

Theodore Blegen

EVP and CFO

Kirkland, WA

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