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.
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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 10 of 11
106 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2010-10-12 | MKSI | Mixed | +2,374 | -$25.5K | EDGAR |
| 2010-04-27 | MKSI | Sell (S) | −6,623 | -$159.9K | EDGAR |
| 2010-03-18 | MKSI | Mixed | +2,215 | -$24.8K | EDGAR |
| 2010-03-12 | MKSI | Mixed | +2,232 | $0 | EDGAR |
| 2010-03-08 | MKSI | Grant (A) | — | $0 | EDGAR |
| 2010-03-03 | MKSI | Mixed | +2,176 | -$28.9K | EDGAR |
| 2010-02-16 | MKSI | Sell (S) | −2,409 | -$45.1K | EDGAR |
| 2009-10-09 | MKSI | Mixed | +2,409 | -$25.7K | EDGAR |
| 2009-07-30 | MKSI | Sell (S) | −6,187 | -$118.4K | EDGAR |
| 2009-03-18 | MKSI | Grant (A) | — | $0 | 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.