John Tsung-chen Chao
CIK 1746472 · VP & MD, Westlake Innovations · last filed 2026-02-23
"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
$8.27B
Companies
1
Total Filings
13
Lifetime Open-Market Net
$0
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.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| WLK | Director | 93,413,442 | $88.50 | $8.27B | $0 | 13 | 2026-02-23 |
Recent Filings · Page 2 of 2
13 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2020-08-17 | WLK | Mixed | +2,387 | $0 | EDGAR |
| 2019-08-19 | WLK | Mixed | +1,409 | $0 | EDGAR |
| 2018-08-20 | WLK | Grant (A) | — | $0 | EDGAR |
Showing 11–13 of 13
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Page 2 of 2
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.