Company profile
Zai Lab Ltd Insider Trading
ZLABEvery SEC Form 4 insider trading filing for Zai Lab Ltd (ZLAB) since April 2023: open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Pharmaceutical Preparations
- CIK
- 0001704292
- Filings
- 175
- Insiders
- 17
- Last filing
- 2026-08-19
Activity summary
No insider transactions in the last 30 days. The most recent was on August 19, 2026, when Yajing Chen sold 260 shares. 175 filings from 17 insiders are on record below.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Zai Lab Ltd insiders are net sellers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $15.9M.
90 day insight
Over the last 90 days, Zai Lab Ltd insiders bought $0 (9 transactions) and sold $900K (7 transactions).
- Most active insider: Ying Du with 11 transactions totaling $778K.
- Largest single sale: $429K by Ying Du on Jun 26, 2026.
- 30% of recent sales were pre-scheduled 10b5-1 trades, typically less informative than open-market activity.
Activity is mixed: buys and sales are roughly balanced.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 19, 2026 | Yajing Chen | ZLAB | Sale10b5 | 260 | $27.00 | $7K |
| Aug 14, 2026 | Yajing Chen | ZLAB | Option Exercise | 1,250 | — | — |
| Aug 14, 2026 | Yajing Chen | ZLAB | Tax Withholding | 427 | $25.90 | $11K |
| Aug 14, 2026 | Yajing Chen | ZLAB | Option Exercise | 1,250 | — | — |
| Aug 12, 2026 | William Lis | ZLAB | Sale10b5 | 8,506 | $25.00 | $213K |
45 more transactions hidden
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By total value filed.
Institutional Ownership
Top 13F-HR holders of Zai Lab Ltd as of 2026-06-30
Data source: quarterly 13F-HR filings: institutional holders report positions within 45 days of quarter end. Joined with insider activity above: see who's loading up institutionally while insiders are trading. Full 13F-HR API →