Yajing Chen - 31 Oct 2025 Form 4 Insider Report for Zai Lab Ltd (ZLAB)

Role
Chief Financial Officer
Signature
/s/ Bruce Blefeld, Attorney-in-Fact
Issuer symbol
ZLAB
Transactions as of
31 Oct 2025
Net transactions value
-$6,439
Form type
4
Filing time
04 Nov 2025, 16:13:03 UTC
Previous filing
03 Oct 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Chen Yajing Chief Financial Officer C/O ZAI LAB LIMITED, 314 MAIN STREET, 4TH FLOOR, SUITE 100, CAMBRIDGE /s/ Bruce Blefeld, Attorney-in-Fact 04 Nov 2025 0001985694

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ZLAB American Depositary Shares Options Exercise +500 +2.9% 17,684 31 Oct 2025 Direct F1, F2, F3
transaction ZLAB American Depositary Shares Sale $6,439 -240 -1.4% $26.83 17,444 03 Nov 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 -500 -100% $0.000000 0 31 Oct 2025 American Depositary Shares 500 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 Restricted Share Units vest in equal annual installments over four years beginning on 11/01/2022, the first anniversary of the date of grant. Vested shares will be delivered to the reporting person following vesting.