John Tseng-Chung Lee
CIK 1414656 · President & CEO · last filed 2026-05-26
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Loading insider history…
Disclosed Exposure
$53.05M
Companies
2
Total Filings
106
Lifetime Open-Market Net
-$15.93M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Recent Filings · Page 7 of 11
106 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2013-12-04 | MKSI | Buy (P) | +443 | $10.6K | EDGAR |
| 2013-06-04 | MKSI | Buy (P) | +520 | $10.6K | EDGAR |
| 2013-03-15 | MKSI | Sell (S) | −8,160 | -$225.5K | EDGAR |
| 2013-03-05 | MKSI | Mixed | +3,299 | -$43.1K | EDGAR |
| 2013-03-04 | MKSI | Mixed | +2,172 | -$28.6K | EDGAR |
| 2013-02-26 | MKSI | Mixed | +2,210 | -$28.5K | EDGAR |
| 2013-02-01 | MKSI | Other (J) | — | $0 | EDGAR |
| 2012-12-05 | MKSI | Buy (P) | +479 | $9.9K | EDGAR |
| 2012-08-07 | MKSI | Sell (S) | −2,868 | -$76.5K | EDGAR |
| 2012-06-07 | MKSI | Grant (A) | +478 | $10.6K | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.