John Tseng-Chung Lee, President & CEO at MKS INC (MKSI), sold 30,000 shares at $257.81 ($7.7M) on 2026-02-20, disclosed to the SEC on 2026-02-23.
Seasonal sale ($7.7M) by President & CEO — this insider has traded MKSI in February in at least three consecutive prior years. Pattern-driven, low signal.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $256.05 | 13,310 | $3.4M | 44.2% |
| 2 | $256.93 | 12,812 | $3.3M | 42.7% |
| 3 | $257.81 | 1,988 | $513K | 6.7% |
| 4 | $259.70 | 1,890 | $491K | 6.4% |
| Total | $256.77 avg | 30,000 | $7.7M | 100% |
| Filing → |
| MKSI | SELL | 2018-02-21 | $2.9M | — | Filing → |
| MKSI | SELL | 2017-11-14 | $440K | — | Filing → |
| MKSI | SELL | 2017-02-23 | $2.0M | — | Filing → |