David Tsung-Hung Chao
CIK 1726418 · last filed 2025-08-11
"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
$2.51M
Companies
1
Total Filings
14
Lifetime Open-Market Net
-$584.4K
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 | 28,335 | $88.50 | $2.51M | -$584.4K | 14 | 2025-08-11 |
Recent Filings · Page 2 of 2
14 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2019-08-19 | WLK | Mixed | +1,409 | $0 | EDGAR |
| 2019-01-07 | WLK | Exer (M) | +1,090 | $0 | EDGAR |
| 2018-08-20 | WLK | Grant (A) | — | $0 | EDGAR |
| 2018-01-09 | WLK | Grant (A) | — | $0 | EDGAR |
Showing 11–14 of 14
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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.