John Tseng-Chung Lee

President & CEO, Director, MKS Instruments

Bought, 12 months

$0.0M

Sold, 12 months

$13.9M

Companies

Latest trade

Aug 14, 2026

Companies

MKS InstrumentsPresident & CEO, Director −$13.9M

Trades

MKSI Sold 10,000 shares at $302.01 · planned $3.0M Aug 14

MKSI Sold 10,000 shares at $315.48 · planned $3.2M May 22

MKSI Sold 30,000 shares at $256.77 $7.7M Feb 20

Open-market trades from SEC Form 4 only: no grants, option exercises or gifts. People are matched by the name on their filings, so two people with the same name share this page. For information only — not investment advice.