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John Tseng-Chung Lee Insider Profile

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John Tseng-Chung Lee, President & CEO, Director at MKS, holds 144.70K shares in MKS (Ticker: MKSI), holds 24.82K shares in Cognex (Ticker: CGNX).
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John Tseng-Chung Lee

John Tseng-Chung Lee
MKS (MKSI)
President & CEO, Director

Ranked #88,449 out of 107,785 Corporate Insiders

Profitable Transactions

29%
2 out of 7 Profitable Transactions

Average Return

-19.80%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

$45M
96.66%
3.34%
A breakdown of John Tseng-Chung Lee's holdings
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Insider Roles

MKS
(MKSI)
President & CEO, Director
Cognex
(CGNX)
Director
Roles that John Tseng-Chung Lee holds in companies
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Most Profitable Insider Trade

Stock:
MKS
(MKSI)
Rating:Informative Sell
Date:Nov 14, 2017 - Nov 14, 2018
Return:+30.30%
The most profitable trade made by John Tseng-Chung Lee
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John Tseng-Chung Lee's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
MKSI
MKS
May 26, 2026
President & CEO, Director
Uninformative Sell
3.15M
$43.65M
CGNX
Cognex
Feb 24, 2026
Director
Uninformative Buy
163.22K
$1.51M
List of latest transactions for each holding click on a transaction to see John Tseng-Chung Lee's performance on stock
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John Tseng-Chung Lee insider profile FAQ

What is the percentage of profitable transactions made by John Tseng-Chung Lee?
The percentage of profitable transactions made by John Tseng-Chung Lee is 29%.
    What is the average return per transaction made by John Tseng-Chung Lee?
    The average return per transaction made by John Tseng-Chung Lee is -19.80%.
      What stocks does John Tseng-Chung Lee hold?
      John Tseng-Chung Lee holds: MKSI, CGNX stocks.
        What was John Tseng-Chung Lee’s latest transaction?
        John Tseng-Chung Lee latest transaction was an Uninformative Sell of $3.15M.
          What was John Tseng-Chung Lee's most profitable transaction?
          John Tseng-Chung Lee’s most profitable transaction was an Informative Sell of MKSI stock on November 14, 2017. The return on the trade was 30.30%.
            What is John Tseng-Chung Lee's role in MKS?
            John Tseng-Chung Lee's role in MKS is President & CEO, Director.
              How can I follow the stock ratings of top corporate insiders?
              Head over to our Expert Center to see a list of the Top 100 corporate insiders and follow the corporate insiders of your choice. Visit their profiles for more details about their stock transactions and see how they perform on a stock-by-stock basis.