Zai Lab Limited (ZLAB) Insider Trading
Over the last 3 months, ZLAB insiders made 1 open-market buy and 8 sales, a net sale of -$999K (SEC Form 4). Over the last 6 months, 25 institutions increased and 47 reduced their position (13F).
Insider Activity
Sentiment
3/100
Buys (3m)
1
Sells (3m)
8
Net (3m)
-$999.4K
Insiders buyingFirst buy in 1 quarters
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price +46.4%Institutions reducing (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 21, 2026 | Chen Yajingofficer: Chief Financial Officer | Sell | 260 | $27.00 |
| Aug 18, 2026 | Chen Yajingofficer: Chief Financial Officer | Tax | 427 | $25.90 |
| Aug 18, 2026 | Chen Yajingofficer: Chief Financial Officer | Option | 1,250 | — |
| Aug 13, 2026 | Chen Yajingofficer: Chief Financial Officer | Sell | 619 | $25.00 |
| Aug 13, 2026 | Lis Williamdirector | Sell | 8,506 | $25.00 |
| Jul 6, 2026 | Du Yingdirector, officer: Chairperson & CEO | Grant | 80,393 | — |
| Jul 6, 2026 | Du Yingdirector, officer: Chairperson & CEO | Tax | 4,348 | $19.12 |
| Jul 6, 2026 | Du Yingdirector, officer: Chairperson & CEO | Tax | 7,083 | $19.15 |
| Jul 6, 2026 | GAYNOR RICHARDdirector | Buy | 1,736 | $19.05 |
| Jul 6, 2026 | Du Yingdirector, officer: Chairperson & CEO | Option | 18,000 | — |
| Jul 6, 2026 | Du Yingdirector, officer: Chairperson & CEO | Option | 11,048 | — |
| Jul 1, 2026 | Du Yingdirector, officer: Chairperson & CEO | Option | 17,970 | — |
| Jul 1, 2026 | Du Yingdirector, officer: Chairperson & CEO | Sell | 7,026 | $18.53 |
| Jun 29, 2026 | Chen Yajingofficer: Chief Financial Officer | Sell | 2,264 | $17.46 |
| Jun 29, 2026 | Chen Yajingofficer: Chief Financial Officer | Option | 6,250 | — |
| Jun 29, 2026 | Du Yingdirector, officer: Chairperson & CEO | Sell | 24,543 | $17.46 |
| Jun 29, 2026 | Edmondson Frazor Titus IIIofficer: Chief Legal Officer | Option | 14,600 | — |
| Jun 29, 2026 | Du Yingdirector, officer: Chairperson & CEO | Option | 58,800 | — |
| Jun 29, 2026 | Edmondson Frazor Titus IIIofficer: Chief Legal Officer | Sell | 4,103 | $17.46 |
| Jun 24, 2026 | Lis Williamdirector | Sell | 7,040 | $18.09 |
| Jun 22, 2026 | Leung Nisadirector | Grant | 22,371 | — |
| Jun 22, 2026 | Vounatsos Micheldirector | Grant | 22,371 | — |
| Jun 22, 2026 | WIRTH PETERdirector | Grant | 22,371 | — |
| Jun 22, 2026 | DIEKMAN JOHN Ddirector | Grant | 22,371 | — |
| Jun 22, 2026 | MOULDER LEON O JRdirector | Grant | 22,371 | — |
| Jun 22, 2026 | Lis Williamdirector | Grant | 22,371 | — |
| Jun 22, 2026 | Morrison Scott Wdirector | Grant | 22,371 | — |
| Jun 22, 2026 | GAYNOR RICHARDdirector | Grant | 22,371 | — |
| Jun 8, 2026 | Wang Yizheofficer: Operating Partner | Grant | 136,819 | $20.32 |
| Jun 8, 2026 | Wang Yizheofficer: Operating Partner | Grant | 59,288 | — |
Source: ZLAB SEC Form 4 filings, latest Aug 21, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their ZLAB positions over the last 6 months (SEC Form 13F).
Increased
25
New positions
18
Reduced
47
Sold out
101
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| RTW INVESTMENTS, LP | Reduced | 6.6M | May 15, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | New Position | 5.7M | May 15, 2026 |
| FRAZIER LIFE SCIENCES MANAGEMENT, L.P. | Unchanged | 1.9M | May 15, 2026 |
| CITADEL ADVISORS LLC | Reduced | 1.7M | May 15, 2026 |
| BAMCO INC /NY/ | Increased | 1.7M | May 15, 2026 |
| ADAR1 CAPITAL MANAGEMENT, LLC | Reduced | 1.4M | May 18, 2026 |
| FMR LLC | Reduced | 1.3M | May 15, 2026 |
| BLACKROCK, INC. | Increased | 865K | May 13, 2026 |
| ROCK SPRINGS CAPITAL MANAGEMENT LP | Increased | 815K | May 15, 2026 |
| C WORLDWIDE GROUP HOLDING A/S | Unchanged | 510K | May 6, 2026 |
| UBS GROUP AG | Reduced | 504K | May 5, 2026 |
| JANE STREET GROUP, LLC | Reduced | 467K | May 12, 2026 |
| B GROUP, INC. | Increased | 451K | May 15, 2026 |
| SCHRODER INVESTMENT MANAGEMENT GROUP | Increased | 393K | May 14, 2026 |
| NAN FUNG TRINITY (HK) LTD | Increased | 346K | May 5, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.