Du Ying
Chairperson & CEO
Du Ying has filed 14 SEC Form 4 filings (44 transaction rows) across 1 company, with disclosures dating back to 2025. 13 of those filings fall inside the rolling window. Most recent filing: Jul 6, 2026.
On the most recent filing, Du Ying is listed as Chairperson & CEO at Zai Lab Ltd. Inside the rolling window, Du Ying reported no open-market purchases and 13 open-market sales totaling $8.6M in ZLAB. The largest disclosed transaction in the window is a sale of 50,000 ZLAB shares on May 15, 2026, worth $1.0M.
Companies traded
Other insiders at ZLAB
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$8.6M
reported sales (SEC code S)
Companies
1
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| ZLAB | Chairperson & CEO | Sale | 7,026 | $130K | Jul 1 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 24,543 | $429K | Jun 29 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 50,000 | $1.0M | May 19 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 50,000 | $950K | May 19 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 50,000 | $998K | May 15 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 50,000 | $1.0M | May 15 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 2,653 | $54K | Apr 8 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 5,576 | $114K | Apr 3 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 1,067 | $20K | Mar 12 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 50,000 | $971K | Mar 10 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 50,000 | $951K | Mar 10 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 50,000 | $958K | Mar 6 | SEC ↗ | |
| ZLAB | Chairperson & CEO | Sale | 50,000 | $961K | Mar 6 | SEC ↗ |
Frequently asked questions
How many SEC Form 4 filings has Du Ying made?
Du Ying has filed 14 SEC Form 4 filings (44 transaction rows) across 1 company since 2025.
Which companies does Du Ying trade?
Du Ying has filed SEC Form 4 disclosures for 1 company, including ZLAB.
When was Du Ying's most recent SEC Form 4 filing?
Du Ying's most recent SEC Form 4 filing on Tracefour is dated Jul 6, 2026.
What is Du Ying's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Du Ying is listed as Chairperson & CEO.
What is Du Ying's total buy and sell value in the current window?
Inside the rolling retention window, Du Ying bought $0 and sold $8.6M based on SEC Form 4 filings.
What was Du Ying's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 50,000 ZLAB shares on 2026-05-15, worth $1.0M, per SEC Form 4 filings.