Ying Du sold $429K of ZLAB stock

Ying Du, Chairperson & CEO of Zai Lab Ltd (ZLAB), sold 24,543 shares of ZLAB stock worth $429K, per an SEC Form 4 filed Jun 29, 2026.

The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.

The trade happened on Jun 25, 2026, 4 days before it was made public.

ZLAB has moved +32.8% since the trade date, from $18.52 to $24.60 (Nov 13, 2026 close).