GAYNOR RICHARD 4
4 · Zai Lab Ltd · Filed Mar 19, 2026
Research Summary
AI-generated summary of this filing
Zai Lab (ZLAB) Director Richard Gaynor Buys 1,731 ADS
What Happened Richard Gaynor, a director of Zai Lab Ltd (ZLAB), purchased 1,731 American Depositary Shares (ADS) on March 17, 2026 at $18.91 per ADS, for a total transaction value of about $32,733. The filing reports the acquisition as a purchase (transaction code P).
Key Details
- Transaction date: 2026-03-17; Filing date: 2026-03-19 (filed within the typical two-business-day window; no late filing indicated).
- Price and size: 1,731 ADS at $18.91 per ADS; total ≈ $32,733.
- ADS note: Each ADS represents 10 ordinary shares; 1,731 ADS = 17,310 ordinary shares (reported in ADS terms per footnote).
- Reporting code: P (purchase). The Form 4 footnote states the trade was effected under a Rule 10b5‑1 trading plan adopted by the reporting person on December 16, 2025.
- Shares owned after the transaction: Not disclosed in this Form 4.
Context Purchases by insiders can be interpreted as a positive signal, but the filing indicates this trade was executed under a pre-established 10b5‑1 plan, which can auto-execute trades per a predetermined schedule. That reduces (but does not eliminate) the inference that the purchase reflects current insider sentiment.
Insider Transaction Report
Form 4
Zai Lab LtdZLAB
GAYNOR RICHARD
Director
Transactions
- Purchase
American Depositary Shares
[F1][F2]2026-03-17$18.91/sh+1,731$32,733→ 56,630 total
Footnotes (2)
- [F1]Each American Depositary Share ("ADS") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs.
- [F2]The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 16, 2025.
Signature
/s/ Bruce Blefeld, Attorney-in-Fact|2026-03-19