Lee John Tseng-Chung
SEC CIK 1414656 · EDGAR
BoughtSold
Most active insiders at MKSI, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Lee John Tseng-Chung | Pres, CEO, Dir | — | $13.88M |
| 2 | COLELLA GERALD G | Dir | — | $11.74M |
| 3 | Henry David Philip | EVP, Gbl Str Mktg, GM, MSD | — | $3.24M |
| 4 | Mayampurath Ramakumar | EVP, CFO | — | $2.78M |
| 5 | Schreiner James Alan | EVP, COO | — | $2.60M |
| 6 | Burke Kathleen Flaherty | EVP, GC, Sec | — | $2.46M |
| 7 | Taranto Eric Robert | EVP, GM, VSD | — | $2.28M |
| 8 | McCarthy Michelle M | VP, CAO | — | $1.13M |
| 9 | Moloney Jacqueline F | Dir | — | $1.07M |
| 10 | CANNONE PETER III | Dir | — | $732.2K |
Transactions 26
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T | 2026-08-17 10:11 | 2026-08-14 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | S - Sale | $302.01 | -10.0K | 134.8K | -7% | -$3.02M |
| T | 2026-05-26 14:15 | 2026-05-22 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | S - Sale | $315.48 | -10.0K | 144.7K | -6% | -$3.15M |
| D | 2026-02-24 | 2026-02-21 | CGNX | COGNEX CORP | Lee John Tseng-Chung | Dir | M - OptEx | $0.00 | +2,913 | 24.8K | +13% | $0 |
| M | 2026-02-23 | 2026-02-20 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | S - Sale | $256.77 | -30.0K | 171.4K | -15% | -$7.70M |
| D | 2026-02-19 | 2026-02-18 | CGNX | COGNEX CORP | Lee John Tseng-Chung | Dir | M - OptEx | $0.00 | +8,324 | 21.9K | +61% | $0 |
| DM | 2026-02-18 | 2026-02-17 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | M - OptEx | — | +69.9K | 205.2K | +52% | — |
| D | 2026-02-18 | 2026-02-17 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | F - Tax | $260.74 | -32.5K | 184.7K | -15% | -$8.49M |
| DM | 2025-11-04 | 2025-10-31 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | M - OptEx | — | +2,003 | 147.6K | +1% | — |
| D | 2025-11-04 | 2025-10-31 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | F - Tax | $143.71 | -2,003 | 147.3K | -1% | -$287.9K |
| D | 2025-05-12 | 2025-05-09 | CGNX | COGNEX CORP | Lee John Tseng-Chung | Dir | M - OptEx | $0.00 | +1,848 | 13.6K | +16% | $0 |
| DM | 2025-02-24 | 2025-02-20+ | CGNX | COGNEX CORP | Lee John Tseng-Chung | Dir | M - OptEx | $0.00 | +8,720 | 9,988 | +688% | $0 |
| DM | 2025-02-19 | 2025-02-18 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | M - OptEx | — | +61.8K | 126.7K | +95% | — |
| D | 2025-02-19 | 2025-02-18 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | F - Tax | $103.67 | -27.3K | 147.1K | -16% | -$2.83M |
| D | 2024-12-10 | 2024-12-06 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | F - Tax | $114.60 | -2,994 | 112.7K | -3% | -$343.1K |
| DM | 2024-12-10 | 2024-12-06 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | M - OptEx | — | +2,994 | 114.7K | +3% | — |
| D | 2024-05-10 | 2024-05-09 | CGNX | COGNEX CORP | Lee John Tseng-Chung | Dir | M - OptEx | $0.00 | +1,109 | 3,015 | +58% | $0 |
| D | 2024-02-22 | 2024-02-21 | CGNX | COGNEX CORP | Lee John Tseng-Chung | Dir | M - OptEx | $0.00 | +1,166 | 1,906 | +158% | $0 |
| DM | 2024-02-16 | 2024-02-15 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | M - OptEx | — | +64.5K | 135.0K | +92% | — |
| D | 2024-02-16 | 2024-02-15 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | F - Tax | $122.15 | -30.2K | 112.4K | -21% | -$3.69M |
| DM | 2023-12-05 | 2023-12-01 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | M - OptEx | — | +3,275 | 79.9K | +4% | — |
| D | 2023-12-05 | 2023-12-01 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | F - Tax | $84.19 | -3,275 | 78.1K | -4% | -$275.7K |
| D | 2023-05-11 | 2023-05-09 | CGNX | COGNEX CORP | Lee John Tseng-Chung | Dir | M - OptEx | $0.00 | +740 | 740 | New | $0 |
| DM | 2023-02-16 | 2023-02-15 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | M - OptEx | — | +47.0K | 98.7K | +91% | — |
| D | 2023-02-16 | 2023-02-15 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | F - Tax | $100.29 | -20.9K | 77.9K | -21% | -$2.09M |
| D | 2022-02-16 | 2022-02-15 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | F - Tax | $152.55 | -13.8K | 51.5K | -21% | -$2.11M |
| DM | 2022-02-16 | 2022-02-15 | MKSI | MKS INC | Lee John Tseng-Chung | Pres, CEO, Dir | M - OptEx | — | +31.2K | 61.4K | +103% | — |
Purchase Sale Sale after option exercise All abbreviations