ZLAB
Zai Lab Ltd
Latest Form 4:Sale$7KbyChen Yajing (Chief Financial Officer) · filed Aug 21, 2026
Zai Lab Ltd (ZLAB) has 52 SEC Form 4 filings (103 transaction rows) in the rolling window, disclosed by 7 distinct insiders. Most recent filing: Aug 21, 2026.
The most active filer is Chairperson & CEO Du Ying with 13 filings. Insiders have net sold $10.4M over the trailing 6 months.
- Industry:Biotechnology
- CEO:Ying Du
- Employees:1,784
- HQ:Shanghai, SH, CN
- IPO:2017-09-20
Insider Buying
$355K
reported purchases (SEC code P)
Insider Selling
$11.1M
reported sales (SEC code S)
Unique Insiders
7
in the rolling window
Market Cap
$29.3B
latest known value
| Source | ||||||
|---|---|---|---|---|---|---|
| Chief Financial Officer | Sale | 260 | $7K | Aug 21 | SEC ↗ | |
| Director | Sale | 8,506 | $213K | Aug 13 | SEC ↗ | |
| Chief Financial Officer | Sale | 619 | $15K | Aug 13 | SEC ↗ | |
GAYNOR RICHARDFirst in 4 months | Director | Purchase | 1,736 | $33K | Jul 6 | SEC ↗ |
| Chairperson & CEO | Sale | 7,026 | $130K | Jul 1 | SEC ↗ | |
| Chairperson & CEO | Sale | 24,543 | $429K | Jun 29 | SEC ↗ | |
| Chief Legal Officer | Sale | 4,103 | $72K | Jun 29 | SEC ↗ | |
| Chief Financial Officer | Sale | 2,264 | $40K | Jun 29 | SEC ↗ | |
Lis WilliamFirst filing | Director | Sale | 7,040 | $127K | Jun 24 | SEC ↗ |
| Chairperson & CEO | Sale | 50,000 | $1.0M | May 19 | SEC ↗ | |
| Chairperson & CEO | Sale | 50,000 | $950K | May 19 | SEC ↗ | |
| Chairperson & CEO | Sale | 50,000 | $998K | May 15 | SEC ↗ | |
| Chairperson & CEO | Sale | 50,000 | $1.0M | May 15 | SEC ↗ | |
| Chief Legal Officer | Sale | 3,517 | $71K | May 15 | SEC ↗ | |
| See Remarks | Sale | 3,017 | $62K | Apr 8 | SEC ↗ | |
| Chief Financial Officer | Sale | 853 | $17K | Apr 8 | SEC ↗ | |
| Chief Legal Officer | Sale | 1,224 | $25K | Apr 8 | SEC ↗ | |
| Chairperson & CEO | Sale | 2,653 | $54K | Apr 8 | SEC ↗ | |
| See Remarks | Sale | 2,739 | $56K | Apr 8 | SEC ↗ | |
| Chief Legal Officer | Sale | 4,194 | $86K | Apr 3 | SEC ↗ | |
| Chief Financial Officer | Sale | 5,199 | $106K | Apr 3 | SEC ↗ | |
| See Remarks | Sale | 9,614 | $196K | Apr 3 | SEC ↗ | |
| Chairperson & CEO | Sale | 5,576 | $114K | Apr 3 | SEC ↗ | |
| See Remarks | Sale | 9,910 | $202K | Apr 3 | SEC ↗ | |
GAYNOR RICHARDFirst filing | Director | Purchase | 1,731 | $33K | Mar 19 | SEC ↗ |
| Chief Legal Officer | Sale | 1,281 | $24K | Mar 16 | SEC ↗ | |
Smiley Joshua LFirst in 6 months | See Remarks | Sale | 1,966 | $37K | Mar 16 | SEC ↗ |
Chen YajingFirst in 4 months | Chief Financial Officer | Sale | 1,703 | $32K | Mar 16 | SEC ↗ |
| See Remarks | Sale | 2,957 | $55K | Mar 16 | SEC ↗ | |
| Chairperson & CEO | Sale | 1,067 | $20K | Mar 12 | SEC ↗ | |
| Chairperson & CEO | Sale | 50,000 | $971K | Mar 10 | SEC ↗ | |
| Chairperson & CEO | Sale | 50,000 | $951K | Mar 10 | SEC ↗ | |
Du YingFirst filing | Chairperson & CEO | Sale | 50,000 | $958K | Mar 6 | SEC ↗ |
Du YingFirst filing | Chairperson & CEO | Sale | 50,000 | $961K | Mar 6 | SEC ↗ |
| Chief Legal Officer | Sale | 15,569 | $297K | Mar 6 | SEC ↗ | |
| See Remarks | Sale | 10,000 | $174K | Mar 5 | SEC ↗ | |
Amado RafaelFirst filing | See Remarks | Sale | 10,787 | $188K | Jan 2 | SEC ↗ |
| Chief Legal Officer | Sale | 8,651 | $148K | Dec 18 | SEC ↗ | |
Edmondson Frazor Titus IIIFirst filing | Chief Legal Officer | Sale | 14,328 | $283K | Nov 25 | SEC ↗ |
| Chief Financial Officer | Sale | 240 | $6K | Nov 4 | SEC ↗ | |
Chen YajingFirst filing | Chief Financial Officer | Sale | 456 | $16K | Oct 3 | SEC ↗ |
Smiley Joshua LFirst filing | See Remarks | Purchase | 10,000 | $289K | Sep 12 | SEC ↗ |
Related companies
Zai Lab Ltd is in the Healthcare sector.