Ying Du
CIK 1731790 · Chairperson & CEO · last filed 2026-05-28
"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
$19.79M
Companies
1
Total Filings
53
Lifetime Open-Market Net
-$133.30M
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 |
|---|---|---|---|---|---|---|---|
| ZLAB | Chairperson & CEO | 1,159,058 | $17.07 | $19.79M | -$133.30M | 53 | 2026-05-28 |
Recent Filings · Page 2 of 6
53 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-12-12 | ZLAB | Gift (G) | +74,142 | $0 | EDGAR |
| 2025-09-03 | ZLAB | Mixed | +353,057 | -$7.47M | EDGAR |
| 2025-08-14 | ZLAB | Mixed | — | -$3.30M | EDGAR |
| 2025-08-12 | ZLAB | Mixed | — | -$3.41M | EDGAR |
| 2025-07-07 | ZLAB | Grant (A) | — | $0 | EDGAR |
| 2025-07-03 | ZLAB | Mixed | +10,928 | -$249.1K | EDGAR |
| 2025-07-01 | ZLAB | Mixed | +11,052 | -$245.7K | EDGAR |
| 2025-06-27 | ZLAB | Mixed | +35,131 | -$855.2K | EDGAR |
| 2025-05-15 | ZLAB | Mixed | — | -$2.67M | EDGAR |
| 2025-05-13 | ZLAB | Mixed | — | -$2.89M | 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.