Company: ZLAB
Filing Date: 2025-04-29
Form Type: DEF 14A
Source: 0001628280-25-020478
Chunk: 0

Company: Zai Lab Ltd
Filing Date: 2025-04-29
Form: DEF 14A
Chunk 0
---
### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### SCHEDULE 14A

#### Proxy Statement Pursuant to Section 14(a) of the

#### Securities Exchange Act of 1934
<div align='center'>(Amendment No. )</div>

Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

Check the appropriate box: ☐

| ☐ |     | Preliminary Proxy Statement                                                     |
| ☐ |     | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☒ |     | Definitive Proxy Statement                                                      |
| ☐ |     | Definitive Additional Materials                                                 |
| ☐ |     | Soliciting Material under §240. 14a-12                                          |

### ZAI LAB LIMITED
<div align='center'>(Name of Registrant as Specified in its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)</div>

Payment of Filing Fee (Check the appropriate box):

| ☒ |     | No fee required.                                                                                   |
| ☐ |     | Fee paid previously with preliminary materials.                                                    |
| ☐ |     | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11 |

This document shall also serve as a circular to holders of the ordinary shares of Zai Lab Limited for purposes of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (“HK Listing Rules”).

Warning: The contents of this document have not been reviewed by any regulatory authority in Hong Kong. If you are in doubt about any of the contents of this document, you should obtain independent professional advice.

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited (the “Hong Kong Stock Exchange” or “HKSE”) take no responsibility for the contents of this circular, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this circular.

This document, for which the directors of Zai Lab Limited collectively and individually accept full responsibility, includes particulars given in compliance with the HK Listing Rules for the purpose of giving information with regard to Zai Lab Limited. The directors, having made all reasonable