Exempt Offering Notice · D

ZAI LAB LTD

ZAILFOTCEQUITYCurrent

Exempt Offering Notice

Filed Nov 9, 2026Accepted Nov 9, 2026, 4:12 PM ESTFiling CIK 1704292Accession 0001704292-26-000038

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Structured filing — D

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Issuer

Name: Zai Lab Ltd
CIK: 0001704292
Entity type: Other
Other entity type: CAYMAN ISLANDS EXEMPTED COMPANY
Jurisdiction: CAYMAN ISLANDS
Phone: +1 857 706 2604
Street: 314 MAIN STREET
Street (continued): 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142
Incorporated more than five years ago: true
Previous issuer names: None
Previous EDGAR names: None

Related person 1

First name: SAMANTHA (YING)
Last name: DU, Ph.D.
Relationships: Executive Officer · Director
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Related person 2

First name: JOHN
Middle name: DAVID
Last name: DIEKMAN, Ph.D.
Relationships: Director
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Related person 3

First name: RICHARD
Middle name: BRIAN
Last name: GAYNOR, M.D.
Relationships: Director
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Related person 4

First name: NISA
Middle name: BERNICE WING-YU
Last name: LEUNG
Relationships: Director
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Related person 5

First name: WILLIAM
Middle name: DAVID
Last name: LIS
Relationships: Director
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Related person 6

First name: SCOTT
Middle name: WILLIAM
Last name: MORRISON
Relationships: Director
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Related person 7

First name: LEON
Middle name: OLIVER
Last name: MOULDER, JR.
Relationships: Director
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Related person 8

First name: MICHEL
Middle name: PERICLES
Last name: VOUNATSOS
Relationships: Director
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Related person 9

First name: PETER
Middle name: KARL
Last name: WIRTH, J.D.
Relationships: Director
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Related person 10

First name: YAJING
Last name: CHEN, Ph.D.
Relationships: Executive Officer
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Related person 11

First name: RAFAEL
Middle name: G.
Last name: AMADO, M.D.
Relationships: Executive Officer
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Related person 12

First name: F.
Middle name: TY
Last name: EDMONDSON, J.D.
Relationships: Executive Officer
Relationship clarification: [blank]
Street: C/O ZAI LAB LTD
Street (continued): 314 MAIN STREET, 4TH FLOOR, SUITE 10
City: CAMBRIDGE
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02142

Offering

Industry: Biotechnology
Revenue range: Decline to Disclose
Exemption codes: 06b
Amendment: false
First sale date: 2026-10-27
Offering lasts more than one year: false
Equity securities: true
Business combination: false
Business combination clarification: [blank]
Minimum investment accepted: 0
Total offering amount: 249,933,600
Amount sold: 249,933,600
Remaining amount: 0
Amount clarification: [blank]
Non-accredited investors reported: false
Investors already participating: 25

Commissions, fees and proceeds

Sales commissions: 7,498,008
Finders’ fees: 0
Commission / fee clarification: [blank]
Gross proceeds used: 0
Use of proceeds clarification: [blank]

Sales compensation recipient 1

Name: LEERINK PARTNERS LLC
CRD: 39011
Associated broker-dealer: None
Broker-dealer CRD: None
Foreign solicitation: false
Street: 53 STATE STREET
Street (continued): 40TH FLOOR
City: BOSTON
State / country code: MA
State / country: MASSACHUSETTS
Postal code: 02109
Solicitation jurisdictions: All States

Signature authorization

Authorized representative: false

Signature 1

Issuer: Zai Lab Ltd
Signer: YAJING CHEN, Ph.D.
Signed: YAJING CHEN, Ph.D.
Title: CHIEF FINANCIAL OFFICER
Date: 2026-11-09

Company context

Zai Lab Limited (NASDAQ: ZLAB; HKEX: 9688) is an innovative, research-based, commercial-stage biopharmaceutical company based in China and the United States. We are focused on discovering, developing, and commercializing innovative products that address medical conditions with significant unmet needs in the areas of oncology, immunology, neuroscience, and infectious disease. Our goal is to leverage our competencies and resources to positively impact human health.

Current securities

ZAILFOTC · EQUITY · Current ZLABNASDAQ · ADR · Current

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