Ying Du - Apr 5, 2021 Form 4/A - Amendment Insider Report for Zai Lab Ltd (ZLAB)

Role: Chairwoman & CEO, Director
Signature: /s/ Bruce A. Blefeld, Attorney-in-Fact
Stock symbol: ZLAB
Transactions as of: Apr 5, 2021
Transactions value $: $66,667
Form type: 4/A - Amendment
Date filed: 6/2/2021, 08:57 PM
Date Of Original Report: Apr 7, 2021
Next filing: Jun 2, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ZLAB	Ordinary Shares	Options Exercise	$66.7K	+111K	+11.02%	$0.60^*	1.12M	Apr 5, 2021	Direct	F1, F2
holding	ZLAB	Ordinary Shares						1.01M	Apr 5, 2021	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ZLAB	Stock Options (Right to Buy)	Options Exercise	$0	-111K	-7.14%	$0.00	1.44M	Apr 5, 2021	Ordinary Shares	111K	$0.60	Direct	F1, F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On April 7, 2021, the Reporting Person filed a Form 4 which inadvertently did not report that she exercised 111,112 Stock Options in connection with the sales of Ordinary Shares reported in such filing. However, as reported in this amendment, the Reporting Person exercised 111,112 Stock Options for Ordinary Shares, granted to her in connection with a stock option plan that fully vested on October 22, 2020. Accordingly, Table I, Column 5 is amended to reflect such acquisition of Ordinary Shares, pursuant to such exercise of Stock Options, giving effect to the various sale transactions previously reported on the initial filing of this Form 4.
F2	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 1931.
F3	The Stock Options fully vested as of October 22, 2020.

Remarks:

The Power of Attorney given by Ms. Du was previously filed with the U.S. Securities and Exchange Commission on January 4, 2021 as an exhibit to the Form 3 filed by Ms. Du.