Ramakumar Mayampurath Mks Instruments Inc (MKSI) insider trading activity

Ramakumar Mayampurath is EVP & CFO of MKS INSTRUMENTS INC. Currently has a direct ownership of 5,667 shares of MKSI, which is worth approximately $808,907. The most recent transaction as insider was on Nov 17, 2025, when has been sold 2,628 shares (Common Stock) at a price of $142.74 per share, resulting in proceeds of $375,120. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 5.67K

n/a 3M change

n/a 12M change

Total Value Held $808,907

Ramakumar Mayampurath Transaction History

Date	Transaction	Value	Shares Traded	Shares Held	Form
Nov 17 2025	SELL Payment of exercise price or tax liability	$375,120 $142.74 p/Share	2,628 Reduced 31.68%	5,667 Common Stock
Nov 17 2025	BUY Exercise of conversion of derivative security	-	8,295 Added 50.0%	8,295 Common Stock

Also insider at

ROG

ROGERS CORP Technology

SVP, CFO, Treasurer