Zai Lab Ltd — Director's Dealing 2021

May 5, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Zai Lab Ltd (ZLAB)
CIK: 0001704292
Period of Report: 2021-05-03

Reporting Person: Du Ying (Director, Chairwoman & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-03	Ordinary Shares	S	8210	$158.65	Disposed	889331	Direct
2021-05-03	Ordinary Shares	S	6885	$159.59	Disposed	882446	Direct
2021-05-03	Ordinary Shares	S	12634	$160.64	Disposed	869812	Direct
2021-05-03	Ordinary Shares	S	14867	$161.60	Disposed	854945	Direct
2021-05-03	Ordinary Shares	S	7171	$162.54	Disposed	847774	Direct
2021-05-03	Ordinary Shares	S	2720	$163.58	Disposed	845054	Direct
2021-05-03	Ordinary Shares	S	5114	$164.60	Disposed	839940	Direct
2021-05-03	Ordinary Shares	S	3117	$165.50	Disposed	836823	Direct
2021-05-03	Ordinary Shares	S	433	$166.71	Disposed	836390	Direct
2021-05-03	Ordinary Shares	S	1013	$168.21	Disposed	835377	Direct
2021-05-04	Ordinary Shares	S	13379	$155.34	Disposed	821998	Direct
2021-05-04	Ordinary Shares	S	10466	$156.24	Disposed	811532	Direct
2021-05-04	Ordinary Shares	S	3284	$157.27	Disposed	808248	Direct
2021-05-04	Ordinary Shares	S	8812	$158.26	Disposed	799436	Direct
2021-05-04	Ordinary Shares	S	1691	$159.37	Disposed	797745	Direct
2021-05-04	Ordinary Shares	S	2886	$160.52	Disposed	794859	Direct
2021-05-04	Ordinary Shares	S	1325	$161.43	Disposed	793534	Direct
2021-05-04	Ordinary Shares	S	2349	$162.58	Disposed	791185	Direct
2021-05-04	Ordinary Shares	S	1077	$163.43	Disposed	790108	Direct
2021-05-04	Ordinary Shares	S	1488	$164.37	Disposed	788620	Direct
2021-05-04	Ordinary Shares	S	779	$165.40	Disposed	787841	Direct
2021-05-04	Ordinary Shares	S	770	$166.61	Disposed	787071	Direct
2021-05-04	Ordinary Shares	S	240	$167.86	Disposed	786831	Direct
2021-05-04	Ordinary Shares	S	347	$168.95	Disposed	786484	Direct
2021-05-04	Ordinary Shares	S	54	$169.78	Disposed	786430	Direct

Footnotes

F1: The reported transaction was effected pursuant to a sales plan adopted by the Reporting Person, dated March 3, 2021, expires December 31, 2021 and is intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.

F2: Reflects a weighted average sale price of $158.65 per share, at prices ranging from $158.04 to $159.04 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F3: Reflects a weighted average sale price of $159.59 per share, at prices ranging from $159.06 to $160.05 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F4: Reflects a weighted average sale price of $160.64 per share, at prices ranging from $160.07 to $161.04 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F5: Reflects a weighted average sale price of $161.60 per share, at prices ranging from $161.08 to $162.08 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F6: Reflects a weighted average sale price of $162.54 per share, at prices ranging from $162.12 to $163.10 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F7: Reflects a weighted average sale price of $163.58 per share, at prices ranging from $163.14 to $164.04 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F8: Reflects a weighted average sale price of $164.60 per share, at prices ranging from $164.19 to $165.18 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F9: Reflects a weighted average sale price of $165.50 per share, at prices ranging from $165.21 to $166.00 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F10: Reflects a weighted average sale price of $166.71 per share, at prices ranging from $166.57 to $166.93 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F11: Reflects a weighted average sale price of $168.21 per share, at prices ranging from $168.16 to $168.71 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F12: Reflects a weighted average sale price of $155.34 per share, at prices ranging from $154.78 to $155.78 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F13: Reflects a weighted average sale price of $156.24 per share, at prices ranging from $155.79 to $156.73 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F14: Reflects a weighted average sale price of $157.27 per share, at prices ranging from $156.88 to $157.88 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F15: Reflects a weighted average sale price of $158.26 per share, at prices ranging from $157.89 to $158.83 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F16: Reflects a weighted average sale price of $159.37 per share, at prices ranging from $158.92 to $159.65 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F17: Reflects a weighted average sale price of $160.52 per share, at prices ranging from $160.00 to $160.96 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F18: Reflects a weighted average sale price of $161.43 per share, at prices ranging from $161.02 to $162.00 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F19: Reflects a weighted average sale price of $162.58 per share, at prices ranging from $162.04 to $163.04 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F20: Reflects a weighted average sale price of $163.43 per share, at prices ranging from $163.06 to $164.06 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F21: Reflects a weighted average sale price of $164.37 per share, at prices ranging from $164.10 to $165.05 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F22: Reflects a weighted average sale price of $165.40 per share, at prices ranging from $165.25 to $166.10 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F23: Reflects a weighted average sale price of $166.61 per share, at prices ranging from $166.30 to $167.08 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F24: Reflects a weighted average sale price of $167.86 per share, at prices ranging from $167.65 to $168.27 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F25: Reflects a weighted average sale price of $168.95 per share, at prices ranging from $168.69 to $169.15 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.