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

MKSI Quotes by TradingView

John Edward Williams is EVP & GM, PSD of MKS INSTRUMENTS INC. Currently has a direct ownership of 3,640 shares of MKSI, which is worth approximately $394,175. The most recent transaction as insider was on Aug 15, 2025, when has been sold 308 shares (Common Stock) at a price of $104.73 per share, resulting in proceeds of $32,256. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 3.64K
21.33% 3M change
27900.0% 12M change
Total Value Held $394,175

John Edward Williams Transaction History

Date Transaction Value Shares Traded Shares Held Form
Aug 15 2025
SELL
Payment of exercise price or tax liability
$32,256 $104.73 p/Share
308 Reduced 7.8%
3,640 Common Stock
Aug 15 2025
BUY
Exercise of conversion of derivative security
-
947 Added 19.35%
3,948 Common Stock
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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