Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>

Stock options: Exercise, Award, Grant, Conversion
Transaction Date |
Reported DateTime |
Exercisable Expiration |
Company | Symnbol | Insider Relationship |
Shares Traded |
Conversion Price |
Shares Owned |
Filing |
2025-02-20 Exercise |
2025-02-24 4:32 pm |
2025-02-20 2025-02-20 |
COGNEX CORP | CGNX | Lee John Tseng-Chung Director |
8,720 | $0 | 24,820 (Direct) |
View |
2025-02-18 Option Award |
2025-02-20 5:32 pm |
2026-02-18 2026-02-18 |
COGNEX CORP | CGNX | Lee John Tseng-Chung Director |
8,324 | $0 | 24,820 (Direct) |
View |
2025-02-18 Tax Withholding |
2025-02-19 6:21 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
27,332 | $103.67 | 966,016 (Direct) |
View |
2025-02-18 Exercise |
2025-02-19 6:21 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
61,761 | $0 | 966,016 (Direct) |
View |
2025-02-18 Option Award |
2025-02-19 6:21 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
37,925 | $0 | 966,016 (Direct) |
View |
2025-02-10 Option Award |
2025-02-11 5:55 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
12,107 | $0 | 113,991 (Direct) |
View |
2024-12-06 Tax Withholding |
2024-12-10 3:06 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
2,994 | $114.6 | 317,441 (Direct) |
View |
2024-12-06 Exercise |
2024-12-10 3:06 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
2,994 | $0 | 317,441 (Direct) |
View |
2024-05-09 Exercise |
2024-05-10 4:06 pm |
2023-05-09 2025-05-09 |
COGNEX CORP | CGNX | Lee John Tseng-Chung Director |
1,109 | $0 | 16,496 (Direct) |
View |
2024-02-21 Exercise |
2024-02-22 7:16 pm |
2024-02-21 2026-02-21 |
COGNEX CORP | CGNX | Lee John Tseng-Chung Director |
1,166 | $0 | 16,496 (Direct) |
View |
2024-02-20 Option Award |
2024-02-22 7:16 pm |
2025-02-20 2025-02-20 |
COGNEX CORP | CGNX | Lee John Tseng-Chung Director |
6,973 | $0 | 16,496 (Direct) |
View |
2024-02-15 Tax Withholding |
2024-02-16 2:58 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
30,231 | $122.15 | 1,093,823 (Direct) |
View |
2024-02-15 Exercise |
2024-02-16 2:58 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
64,534 | $0 | 1,093,823 (Direct) |
View |
2024-02-15 Option Award |
2024-02-16 2:58 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
22,608 | $0 | 1,093,823 (Direct) |
View |
2024-02-05 Option Award |
2024-02-06 2:39 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
69,279 | $0 | 146,805 (Direct) |
View |
2023-12-01 Exercise |
2023-12-05 2:36 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
3,275 | $0 | 472,857 (Direct) |
View |
2023-12-01 Tax Withholding |
2023-12-05 2:36 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
3,275 | $84.19 | 472,857 (Direct) |
View |
2023-05-09 Exercise |
2023-05-11 4:01 pm |
2023-05-09 2025-05-09 |
COGNEX CORP | CGNX | Lee John Tseng-Chung Director |
740 | $0 | 9,523 (Direct) |
View |
2023-02-21 Option Award |
2023-02-23 4:27 pm |
2024-02-21 2026-02-21 |
COGNEX CORP | CGNX | Lee John Tseng-Chung Director |
5,826 | $0 | 9,523 (Direct) |
View |
2023-02-15 Tax Withholding |
2023-02-16 2:52 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
20,862 | $100.29 | 819,460 (Direct) |
View |
2023-02-15 Exercise |
2023-02-16 2:52 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
47,030 | $0 | 819,460 (Direct) |
View |
2023-02-15 Option Award |
2023-02-16 2:52 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
23,931 | $0 | 819,460 (Direct) |
View |
2023-02-08 Option Award |
2023-02-09 3:30 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
43,902 | $0 | 103,900 (Direct) |
View |
2022-05-09 Option Award |
2022-05-10 1:52 pm |
2023-05-09 2025-05-09 |
COGNEX CORP | CGNX | Lee John Tseng-Chung Director |
3,697 | $0 | 3,697 (Direct) |
View |
2022-04-29 Option Award |
2022-05-02 4:14 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
21,056 | $0 | 59,997 (Direct) |
View |
2022-02-15 Exercise |
2022-02-16 4:33 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
31,198 | $0 | 374,011 (Direct) |
View |
2022-02-15 Tax Withholding |
2022-02-16 4:33 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
13,839 | $152.55 | 374,011 (Direct) |
View |
2022-01-21 Option Award |
2022-01-24 4:27 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
28,873 | $0 | 70,139 (Direct) |
View |
2021-02-16 Tax Withholding |
2021-02-17 6:48 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
9,804 | $172.2 | 531,942 (Direct) |
View |
2021-02-16 Exercise |
2021-02-17 6:48 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
22,096 | $0 | 531,942 (Direct) |
View |
2021-02-16 Option Award |
2021-02-17 6:48 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
11,812 | $0 | 531,942 (Direct) |
View |
2021-01-25 Option Award |
2021-01-26 2:00 pm |
N/A N/A |
MKS INSTRUMENTS INC | MKSI | Lee John Tseng-Chung President & CEO |
22,605 | $0 | 51,550 (Direct) |
View |