Exhibit 4.1

ZAI LAB LIMITED

 

Number		Ordinary Shares
[    ]		- [    ] -

Incorporated under the laws of the Cayman Islands

Share capital is US$30,000 divided into 500,000,000 Shares of US$0.00006 par value each

THIS IS TO CERTIFY THAT [                ] is the registered holder of [                 ] Ordinary Shares in the above-named Company subject to the Fifth Amended and Restated Memorandum and Articles of Association thereof.

EXECUTED on behalf of the said Company on the [    ] day of [                ] 2021 by: