Du Ying - 01 Jul 2026 Form 4 Insider Report for Zai Lab Ltd (ZLAB)

Reporting relationship: Chairperson & CEO, Director
Issuer ticker: ZLAB
Reported as of: 01 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 06 Jul 2026, 16:14:00 UTC
Prior SEC filing: 01 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Bruce Blefeld, Attorney-in-Fact

Key filing fact

Du Ying filed Form 4 for Zai Lab Ltd (ZLAB) on 06 Jul 2026.

Key facts

This page summarizes Du Ying's Form 4 filing for Zai Lab Ltd (ZLAB).
7 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 06 Jul 2026, 16:14.

Change

Previous filing in this sequence was filed on 01 Jul 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001731790 Primary reporting owner

Du Ying

Relationship: Chairperson & CEO, Director
Address: C/O ZAI LAB LIMITED, 314 MAIN STREET, 4TH FLOOR, SUITE 100, CAMBRIDGE
Signature: /s/ Bruce Blefeld, Attorney-in-Fact
Signature date: 06 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ZLAB transaction

American Depositary Shares

Options Exercise

Transaction value
Shares: +18,000
Change %: +1.5%
Price
Shares after: 1,221,784
Date: 01 Jul 2026
Ownership: Direct
Footnotes: F1, F2, F3

ZLAB transaction

American Depositary Shares

Tax liability

Transaction value
Shares: -7,083
Change %: -0.58%
Price: $19.15^*
Shares after: 1,214,701
Date: 01 Jul 2026
Ownership: Direct
Footnotes: F1, F4

ZLAB transaction

American Depositary Shares

Options Exercise

Transaction value
Shares: +11,048
Change %: +0.91%
Price
Shares after: 1,225,749
Date: 02 Jul 2026
Ownership: Direct
Footnotes: F1, F2, F3

ZLAB transaction

American Depositary Shares

Tax liability

Transaction value
Shares: -4,348
Change %: -0.35%
Price: $19.12^*
Shares after: 1,221,401
Date: 02 Jul 2026
Ownership: Direct
Footnotes: F1, F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ZLAB transaction Derivative

Restricted Share Units

Options Exercise

Transaction value
Shares: -18,000
Change %: -33%
Price: $0.000000^*
Shares after: 36,000
Date: 01 Jul 2026
Ownership: Direct
Underlying class: American Depositary Shares
Underlying amount: 18,000
Exercise price
Footnotes: F1, F3, F5

ZLAB transaction Derivative

Restricted Share Units

Options Exercise

Transaction value
Shares: -11,048
Change %: -25%
Price: $0.000000^*
Shares after: 33,146
Date: 02 Jul 2026
Ownership: Direct
Underlying class: American Depositary Shares
Underlying amount: 11,048
Exercise price
Footnotes: F1, F3, F6

ZLAB transaction Derivative

Restricted Share Units

Award

Transaction value
Shares: +80,393
Change %
Price: $0.000000^*
Shares after: 80,393
Date: 02 Jul 2026
Ownership: Direct
Underlying class: American Depositary Shares
Underlying amount: 80,393
Exercise price
Footnotes: F1, F3, F7

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 7 footnotes

Footnote 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.

Footnote F2

ADSs acquired upon vesting of Restricted Share Units ("RSUs").

Footnote F3

Each RSU represents a contingent right to receive one ADS.

Footnote F4

These ADSs were withheld to cover taxes upon vesting of RSUs.

Footnote F5

The RSUs vest in equal annual installments over four years beginning on 07/01/2025, 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.

Footnote F6

The RSUs vest in equal annual installments over four years beginning on 07/02/2026, 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.

Footnote F7

The RSUs vest in equal annual installments over four years beginning on 07/02/2027, 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.