John Tseng-Chung Lee
Director; Director, President & CEO · 7 filings · Latest: Aug 14, 2026
COGNEX CORP
MKS INC
| Ticker | Owner | Relationship | Date | Transaction | Cost | #Shares | Value ($) | #Shares Total | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|
MKSI | John Tseng-Chung Lee | Director, President & CEO | Aug 14, 2026 | Sale | $302.01 | 10,000 | $3.0M | 134,776.267 | |
MKSI | Lee John Tseng-Chung | — | Aug 14, 2026 | Proposed Sale | $302.01 | 10,000 | $3.0M | — | |
MKSI | John Tseng-Chung Lee | Director, President & CEO | May 22, 2026 | Sale | $315.48 | 10,000 | $3.2M | 144,696.108 | |
MKSI | Lee John Tseng-Chung | — | May 22, 2026 | Proposed Sale | $315.48 | 10,000 | $3.2M | — | |
CGNX | John Tseng-Chung Lee | Director | Feb 21, 2026 | Option Exercise | $0.00 | 2,913 | — | 24,820 | |
MKSI | John Tseng-Chung Lee | Director, President & CEO | Feb 20, 2026 | Sale | $256.77 | 30,000 | $7.7M | 154,696.108 | |
MKSI | Lee John Tseng-Chung | — | Feb 20, 2026 | Proposed Sale | $247.55 | 30,000 | $7.4M | — | |
CGNX | John Tseng-Chung Lee | Director | Feb 18, 2026 | Option Exercise | $0.00 | 8,324 | — | 21,907 | |
MKSI | John Tseng-Chung Lee | Director, President & CEO | Feb 17, 2026 | Option Exercise | — | 69,889.252 | — | 217,244.415 |