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.
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.
When did Ying Du last file a Form 4?
The most recent primary Form 4 on record is dated 6 July 2026, one of 20 filings going back to 2024.
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.
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
20
The latest 20 SEC Form 4 transactions reported by Ying Du.
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 plan flag. This identifies the marked transactions as reported under a trading plan; it does not establish the plan status of unmarked transactions.
