John Tseng-Chung Lee, Senior VP, HPS, Controls & PFMC at MKS INSTRUMENTS INC (MKSI), sold 8,160 shares at $27.64 ($226K) on 2013-03-14, disclosed to the SEC on 2013-03-15.
Seasonal sale ($226k) by Senior VP, HPS, Controls & PFMC — this insider has traded MKSI in March in at least three consecutive prior years. Pattern-driven, low signal.
Nothing distinguishes this filing.
| Filing → |
| MKSI | SELL | 2026-02-23 | $7.7M | — | Filing → |
| MKSI | SELL | 2018-02-21 | $2.9M | — | Filing → |
| MKSI | SELL | 2017-11-14 | $440K | — | Filing → |