GAYNOR RICHARD 4

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.