John Edward Williams Mks Instruments Inc (MKSI) insider trading activity

John Edward Williams is EVP & GM, PSD of MKS INSTRUMENTS INC. Currently has a direct ownership of 3,000 shares of MKSI, which is worth approximately $214,320. The most recent transaction as insider was on Apr 17, 2025, when has been sold 565 shares (Common Stock) at a price of $63.69 per share, resulting in proceeds of $35,984. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 3K

22976.92% 3M change

n/a 12M change

Total Value Held $214,320

John Edward Williams Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Apr 17 2025	SELL Payment of exercise price or tax liability	$35,984 $63.69 p/Share	565 Reduced 15.85%	3,000 Common Stock
Apr 17 2025	BUY Exercise of conversion of derivative security	-	1,740 Added 32.8%	3,565 Common Stock
Feb 18 2025	SELL Payment of exercise price or tax liability	$93,406 $103.67 p/Share	901 Reduced 33.05%	1,825 Common Stock
Feb 18 2025	BUY Exercise of conversion of derivative security	-	2,712 Added 49.87%	2,726 Common Stock
Aug 16 2024	SELL Open market or private sale	$213,678 $118.71 p/Share	1,800 Reduced 99.28%	13 Common Stock
Aug 15 2024	SELL Payment of exercise price or tax liability	$34,970 $113.91 p/Share	307 Reduced 14.48%	1,813 Common Stock
Aug 15 2024	BUY Exercise of conversion of derivative security	-	946 Added 30.85%	2,120 Common Stock

JEW

John Edward Williams

EVP & GM, PSD

Andover, MA

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