SEC Form 4 · Updated Daily
ZLAB
— Zai Lab Ltd OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Du Ying | Director · Officer | 1,221,401 | 2026-07-02 | F |
| WIRTH PETER | Director | 416,121 | 2026-06-17 | A |
| DIEKMAN JOHN D | Director | 122,140 | 2026-06-17 | A |
| Smiley Joshua L | Officer | 117,602 | 2026-04-06 | S |
| Leung Nisa | Director | 96,297 | 2026-06-17 | A |
| MOULDER LEON O JR | Director · Officer | 94,973 | 2026-06-17 | A |
| GAYNOR RICHARD | Director | 80,737 | 2026-07-01 | P |
| Vounatsos Michel | Director | 72,787 | 2026-06-17 | A |
| Amado Rafael | Officer | 57,022 | 2026-04-06 | S |
| Morrison Scott W | Director | 56,904 | 2026-06-17 | A |
| Lis William | Director | 41,931 | 2026-08-12 | S |
| Chen Yajing | Officer | 35,635 | 2026-08-19 | S |
| Edmondson Frazor Titus III | Officer | 30,346 | 2026-06-26 | S |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-08-19 | Chen Yajing | Open-market sale | 260 | $27.00 | 35,635 |
| 2026-08-14 | Chen Yajing | Option exercise (derivative) | 1,250 | $0.00 | 1,250 |
| 2026-08-14 | Chen Yajing | Tax withholding | 427 | $25.90 | 35,895 |
| 2026-08-14 | Chen Yajing | Option exercise | 1,250 | — | 36,322 |
| 2026-08-12 | Lis William | Open-market sale | 8,506 | $25.00 | 41,931 |
| 2026-08-11 | Chen Yajing | Open-market sale | 619 | $25.00 | 35,072 |
| 2026-07-02 | Du Ying | Grant / award (derivative) | 80,393 | $0.00 | 80,393 |
| 2026-07-02 | Du Ying | Option exercise (derivative) | 11,048 | $0.00 | 33,146 |
| 2026-07-02 | Du Ying | Tax withholding | 4,348 | $19.12 | 1,221,401 |
| 2026-07-02 | Du Ying | Option exercise | 11,048 | — | 1,225,749 |
| 2026-07-01 | Du Ying | Option exercise (derivative) | 18,000 | $0.00 | 36,000 |
| 2026-07-01 | Du Ying | Tax withholding | 7,083 | $19.15 | 1,214,701 |
| 2026-07-01 | Du Ying | Option exercise | 18,000 | — | 1,221,784 |
| 2026-07-01 | GAYNOR RICHARD | Open-market buy | 1,736 | $19.05 | 80,737 |
| 2026-06-30 | Du Ying | Open-market sale | 7,026 | $18.53 | 1,203,784 |
| 2026-06-29 | Du Ying | Option exercise (derivative) | 17,970 | $0.00 | 17,970 |
| 2026-06-29 | Du Ying | Option exercise | 17,970 | — | 1,210,810 |
| 2026-06-26 | Chen Yajing | Open-market sale | 2,264 | $17.46 | 35,691 |
| 2026-06-26 | Du Ying | Open-market sale | 24,543 | $17.46 | 1,192,840 |
| 2026-06-26 | Edmondson Frazor Titus III | Open-market sale | 4,103 | $17.46 | 30,346 |
| 2026-06-25 | Chen Yajing | Option exercise (derivative) | 6,250 | $0.00 | 0 |
| 2026-06-25 | Chen Yajing | Option exercise | 6,250 | — | 37,955 |
| 2026-06-25 | Du Ying | Option exercise (derivative) | 58,800 | $0.00 | 0 |
| 2026-06-25 | Du Ying | Option exercise | 58,800 | — | 1,217,383 |
| 2026-06-25 | Edmondson Frazor Titus III | Option exercise (derivative) | 14,600 | $0.00 | 0 |
| 2026-06-25 | Edmondson Frazor Titus III | Option exercise | 14,600 | — | 34,449 |
| 2026-06-22 | Lis William | Open-market sale | 7,040 | $18.09 | 50,437 |
| 2026-06-17 | Leung Nisa | Grant / award | 22,371 | $0.00 | 96,297 |
| 2026-06-17 | MOULDER LEON O JR | Grant / award | 22,371 | $0.00 | 94,973 |
| 2026-06-17 | DIEKMAN JOHN D | Grant / award | 22,371 | $0.00 | 122,140 |
| 2026-06-17 | WIRTH PETER | Grant / award | 22,371 | $0.00 | 416,121 |
| 2026-06-17 | Lis William | Grant / award | 22,371 | $0.00 | 57,477 |
| 2026-06-17 | Vounatsos Michel | Grant / award | 22,371 | $0.00 | 72,787 |
| 2026-06-17 | Morrison Scott W | Grant / award | 22,371 | $0.00 | 56,904 |
| 2026-06-17 | GAYNOR RICHARD | Grant / award | 22,371 | $0.00 | 79,001 |
| 2026-05-27 | Du Ying | Gift | 53,850 | $0.00 | 1,158,583 |
| 2026-05-27 | Du Ying | Gift | 33,993 | $0.00 | 1,212,433 |
| 2026-05-26 | Du Ying | Gift | 19,857 | $0.00 | 1,246,426 |
| 2026-05-19 | Du Ying | Option exercise (derivative) | 261,092 | $0.00 | 0 |
| 2026-05-19 | Du Ying | Tax withholding | 117,435 | $18.75 | 1,266,283 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.