GAYNOR RICHARD 4

What Happened
Richard Gaynor, a director of Zai Lab Ltd (ZLAB), purchased 1,736 American Depositary Shares (ADSs) in an open-market transaction on July 1, 2026. The purchase price was $19.05 per ADS, for a total reported value of $33,071. This is a buy (acquisition) reported on Form 4.

Key Details

• Transaction date and price: 2026-07-01 — 1,736 ADS @ $19.05 each = $33,071 total.
• ADS to ordinary share conversion: Each ADS represents 10 ordinary shares — the purchase equals 17,360 ordinary shares (ADSs reported per filer note).
• Reporting method: Transaction effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 16, 2025 (footnote).
• Shares owned after transaction: Not disclosed in the provided filing excerpt.
• Filing timeliness: The provided record does not indicate a late-filing flag.

Context
This was a routine open-market purchase executed under a pre-established 10b5-1 plan, which means the trade was scheduled under a written plan adopted earlier (Dec 16, 2025). Purchases by insiders can be informative to investors, but trades under 10b5-1 plans may reflect pre-set instructions rather than a contemporaneous view of the company.