John Tseng-Chung Lee Net Worth
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John Tseng-Chung Lee has an estimated net worth of at least $15.0 million*, as of July 30, 2025. They own 147,117 shares of MKSI stock.
John Tseng-Chung Lee $MKSI SEC Form 4 Insider Trading
John Tseng-Chung Lee has filed a total of 0 insider trades in $MKSI since 2021. We estimate that they now own 147,117 shares of $MKSI, worth an estimated $15.0 million.
Insider Trading at $MKSI
There have been a total of 49 insider trades reported at $MKSI since 2021, with 3,750 shares purchased and 4.1 million shares sold. The most active insider traders in $MKSI stock have been Seth H Bagshaw, Kathleen Flaherty Burke, and David Philip Henry. The most recent trade was a sale of 957 shares reported by James Alan Schreiner (EVP & COO, MSD), made on Jul 07, 2025.
History of Insider Stock Trades by John Tseng-Chung Lee
| Company Ticker | Purchase / Sale | Shares | Date | Disclosed (EST) |
|---|---|---|---|---|
| No Trades Available | - | - | - | - |
$MKSI Executives and Stock Owners with Insider Trades
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Seth H Bagshaw, EVP, CFO & Treasurer
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Kathleen Flaherty Burke, EVP, GC & Secretary
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David Philip Henry, EVP, Operations & Corp Mktg
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James Alan Schreiner, EVP & COO, MSD
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John Edward Williams, EVP & GM, PSD
*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.