Insider tradingForm 4
MKS INC (MKSI) Insider Trading
2 open-market trades reported since Aug 17, 2026: 0 purchases worth $0 and 2 sales worth $3.10M.
By insider
| Insider | Role | Buys | Bought | Sells | Sold |
|---|---|---|---|---|---|
| Elizabeth Mora | Director | 0 | $0 | 1 | $75K |
| John Tseng-Chung Lee | CEO | 0 | $0 | 1 | $3.02M |
All trades
| Filed | Insider | Type | Value | 3 mo. after |
|---|---|---|---|---|
| Sep 2 | Elizabeth MoraDirector | ▼ SELL10b5-1 | $75K | |
| Aug 17 | John Tseng-Chung LeeCEO | ▼ SELL10b5-1 | $3.02M |
Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings