Summary
Updated Aug 31, 2026
Ying Du is Chairperson & CEO of Zai Lab Ltd (ZLAB). 20 SEC Form 4 filings on record going back to 2024, most recently on 6 July 2026. Most recent open-market trade: sold $130K of ZLAB on 1 July 2026. Lifetime open-market sales: $15.90M.
Recent Transactions
20Every recent SEC Form 4 transaction Ying Du has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Ying Du go back to 2024: 20 primary Form 4 filings, an average of 6.7 per year. 35 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Ying Du files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Frazor Titus Edmondson III - $1.01M of ZLAB open-market activity in the last 12 months
- Rafael Amado - $675K of ZLAB open-market activity in the last 12 months
- Joshua L. Smiley - $583K of ZLAB open-market activity in the last 12 months
- William Lis - $340K of ZLAB open-market activity in the last 12 months
- Yajing Chen - $239K of ZLAB open-market activity in the last 12 months
- Richard Gaynor - $66K of ZLAB open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Ying Du?
Ying Du is a corporate insider, tracked as Chairperson & CEO of Zai Lab Ltd (ZLAB). InsiderAlpha holds 20 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Ying Du submitted recently?
3 primary Form 4 filings in the last 90 days, covering 1 company.
Has Ying Du been buying or selling stock?
Recorded transactions: 0 open-market purchases and 21 open-market sales ($15.90M) across all tracked filings.
Where can I see all of Ying Du's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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