Senior insider sale
Chairwoman & CEO at ZAI LAB LTD — senior position signals high conviction
$4.99M
259.30K shares
What this filing means
DU YING plans to sell 259.30K shares of ZAI LAB LTD valued at approximately $4.99M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 5/13/2026ACC: 0001959173-26-003559
DirectorOfficer· Chairwoman & CEO
Since Jan 2021
259.30K
Shares to sell
$4.99M
Approx. market value
50K
Acquired (3 months)
1
Planned
7 completed
Securities Acquired — Last 3 Months1
Option Granted - 08/25/2016
Cash
5/13/2026
50KTotal acquired50K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
5/13/2026 | Option Granted - 08/25/2016 Cash | 50K | — |
| Total | 50K | ||
Planned & Completed Dispositions8
Completed
—Completed
Units to sell
2.65K
Market value
$54.2K
4/6/2026
—Completed
Units to sell
5.58K
Market value
$113.7K
4/2/2026
—Completed
Units to sell
1.07K
Market value
$20.4K
3/11/2026
—Completed
Units to sell
50K
Market value
$951.5K
3/9/2026
—Completed
Units to sell
50K
Market value
$970.9K
3/6/2026
—Completed
Units to sell
50K
Market value
$961.1K
3/5/2026
—Completed
Units to sell
50K
Market value
$958.2K
3/4/2026
Planned — Approximate Date
NASDAQPlanned
Units to sell
50K
Market value
$960.0K
5/13/2026
Total
Units
259.30K
Value
$4.99M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
4/6/2026 | 2.65K | $54.2K | — | Completed |
4/2/2026 | 5.58K | $113.7K | — | Completed |
3/11/2026 | 1.07K | $20.4K | — | Completed |
3/9/2026 | 50K | $951.5K | — | Completed |
3/6/2026 | 50K | $970.9K | — | Completed |
3/5/2026 | 50K | $961.1K | — | Completed |
3/4/2026 | 50K | $958.2K | — | Completed |
| Planned — Approximate Date | ||||
5/13/2026 | 50K | $960.0K | NASDAQ | Planned |
| Total | 259.30K | $4.99M | ||