Insiders / Lee John Tseng-Chung
Lee John Tseng-Chung
CIK 1414656personinsider
Companies
2
First seen
Feb 9, 2026
Last activity
May 26, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| MKS Inc · MKSI | 144,696 | — |
| Cognex Corp · CGNX | 24,820 | — |
All securities held
3 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Cognex Corp | Common Stock | 24,820 |
| MKS Inc | Common Stock | 144,696 |
| MKS Inc | Restricted Stock UnitDerivative | 84,828 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Feb 17, 2026 | Other | MKSI MKS Inc Common Stock | $8.49M | -33K -14.98% | 184,696 0.27% of shares | low |
| Feb 20, 2026 | Sell | MKSI MKS Inc Common Stock | $3.41M | -13K -7.21% | 171,386 0.25% of shares | medium |
| Feb 20, 2026 | Sell | MKSI MKS Inc Common Stock | $3.29M | -13K -7.48% | 158,574 0.23% of shares | medium |
| May 22, 2026 | Sell | MKSI MKS Inc Common Stock | $3.15M | -10K -6.46% | 144,696 0.21% of shares | medium |
| Feb 20, 2026 | Sell | MKSI MKS Inc Common Stock | $512.5K | -2K -1.25% | 156,586 0.23% of shares | medium |
| Feb 20, 2026 | Sell | MKSI MKS Inc Common Stock | $490.8K | -2K -1.21% | 154,696 0.23% of shares | medium |
| Feb 21, 2026 | Exercise | CGNX Cognex Corp Common Stock | $0 | +3K +13.30% | 24,820 0.01% of shares | low |
| Feb 18, 2026 | Exercise | CGNX Cognex Corp Common Stock | $0 | +8K +61.28% | 21,907 0.01% of shares | low |
| Feb 21, 2026 | Exercise | CGNX Cognex Corp Restricted Stock Unit | — | -3K -100.00% | 0 0.00% of shares | low |
| Feb 17, 2026 | Grant | CGNX Cognex Corp Restricted Stock Unit | — | +5K | 4,817 <0.01% of shares | low |