Du Ying - 27 Jun 2025 Form 4 Insider Report for Zai Lab Ltd (ZLAB)

Role: Chairperson & CEO, Director
Signature: /s/ Bruce Blefeld, Attorney-in-Fact
Issuer symbol: ZLAB
Transactions as of: 27 Jun 2025
Net transactions value: -$245,727
Form type: 4
Filing time: 01 Jul 2025, 16:30:46 UTC
Previous filing: 27 Jun 2025
Next filing: 03 Jul 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Du Ying	Chairperson & CEO, Director	C/O ZAI LAB LIMITED, 314 MAIN STREET, 4TH FLOOR, SUITE 100, CAMBRIDGE	/s/ Bruce Blefeld, Attorney-in-Fact	01 Jul 2025	0001731790

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ZLAB	American Depositary Shares	Options Exercise		+17,970	+3.5%		532,952	27 Jun 2025	Direct	F1, F2, F3
transaction	ZLAB	American Depositary Shares	Sale	$245,727	-6,918	-1.3%	$35.52	526,034	30 Jun 2025	Direct	F1, F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ZLAB	Restricted Share Units	Options Exercise	$0	-17,970	-33%	$0.000000	35,940	27 Jun 2025	American Depositary Shares	17,970		Direct	F1, F3, F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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	ADSs acquired upon vesting of Restricted Share Units ("RSUs").
F3	Each RSU represents a contingent right to receive one ADS.
F4	These ADSs were sold automatically to cover taxes upon vesting of RSUs.
F5	The RSUs vest in equal annual installments over four years beginning on 06/29/2024, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting.