Du Ying (CIK 1731790) reported 94 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-07-06). Recent activity: Buy ZLAB (18,000 shares), Sell ZLAB (7,083 shares), Buy ZLAB (11,048 shares), Sell ZLAB (4,348 shares), Buy ZLAB (17,970 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-06 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Buy | 18,000 | $0 |
| 2026-07-06 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 7,083 | $135,639 |
| 2026-07-06 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Buy | 11,048 | $0 |
| 2026-07-06 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 4,348 | $83,134 |
| 2026-07-01 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Buy | 17,970 | $0 |
| 2026-07-01 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 7,026 | $130,220 |
| 2026-06-29 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Buy | 58,800 | $0 |
| 2026-06-29 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 24,543 | $428,545 |
| 2026-05-28 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 19,857 | $0 |
| 2026-05-28 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 33,993 | $0 |
| 2026-05-28 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 53,850 | $0 |
| 2026-05-21 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 117,435 | $2.2M |
| 2026-05-21 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Buy | 261,092 | $454,300 |
| 2026-05-19 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Buy | 50,000 | $87,000 |
| 2026-05-19 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 50,000 | $1.0M |
| 2026-05-19 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Buy | 50,000 | $87,000 |
| 2026-05-19 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 50,000 | $949,765 |
| 2026-05-15 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Buy | 50,000 | $87,000 |
| 2026-05-15 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 16,231 | $315,583 |
| 2026-05-15 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 33,769 | $682,887 |
| 2026-05-15 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Buy | 50,000 | $87,000 |
| 2026-05-15 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 50,000 | $1.0M |
| 2026-04-08 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Sell | 2,653 | $54,249 |
| 2026-04-03 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Buy | 10,800 | $0 |
| 2026-04-03 | Zai Lab Ltd (ZLAB) | Chairperson & CEO | Buy | 3,400 | $0 |
Source: SEC Form 4 filings · as of 2026-07-06