Where is Zai Lab Incorporated?
Zai Lab Limited ("Zai Lab") is incorporated in the Cayman Islands as an exempted company with limited liability under the Companies Law, Cap 22 (Law 3 of 1961, as consolidated and revised) of the Cayman Islands.
Where is Zai Lab headquartered?

Zai Lab's principal executive offices are located at:
4560 Jinke Road, Bldg. 1, 4F, Pudong, Shanghai, China 201210
The address of Zai Lab’s registered office in the Cayman Islands is:
Harbour Place 2nd Floor, 103 South Church Street, P.O. Box 472, George Town, Grand Cayman KY1-1106, Cayman Islands

When is Zai Lab's fiscal year-end?
Zai Lab's fiscal year end is 31 December.
Who is Zai Lab's independent registered public accounting firm?
Zai Lab's independent Registered Public Accounting firm is Deloitte Touche Tohmatsu Certified Public Accountants LLP.
Who is Zai Lab's agent for service?
Zai Lab has appointed Law Debenture Corporate Services Inc., located at 801 Second Avenue, Suite 403, New York, New York 10017, as its agent upon whom process may be served in any action brought against us under the securities laws of the United States.
What form did the listing take?
Zai Lab issued American Depositary Shares, with each American Depositary Share representing one ordinary share, in conjunction with its initial public offering in September 2017. Each American Depositary Share represents the right to receive, and to exercise the beneficial ownership interests in, one ordinary share that is on deposit with Citibank, N.A., which is serving as the depositary bank for the ADSs. Zai Lab issued ordinary shares in conjunction with its secondary offering on the Hong Kong Stock Exchange in September 2020.
Who is the Depositary Bank for Zai Lab's American Depositary Shares?

We have appointed Citibank, N.A. as depositary bank pursuant to a deposit agreement. A copy of the deposit agreement is on file with the SEC under cover of a Registration Statement on Form F-6. You may obtain a copy of the deposit agreement from the SEC's Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549 and from the SEC's website, www.sec.gov. Please refer to Registration Number 333-220256 when retrieving such copy.

Citibank, N.A.'s depositary office is located at 388 Greenwich Street, 23rd Floor, New York, New York 10013 USA.

Citibank, N.A.—Hong Kong, located at 9/F., Citi Tower, One Bay East, 83 Hoi Bun Road, Kwun Tong, Kowloon, Hong Kong, has been appointed custodian to safekeep the American Depositary Shares on deposit.

What is the difference between an American Depositary Share (ADS) and an American Depositary Receipt (ADR)?
An American Depositary Share is a US dollar-denominated share (frequently referred to as "an ADS") that represents ownership interests in securities that are on deposit with a depositary bank. ADSs may be represented by certificates that are commonly known as "American Depositary Receipts" or "ADRs." An ADR is a negotiable instrument that represents ownership in securities and is a mechanism designed to enable US trading of non-US securities. ADRs are quoted and traded in US dollars in the US securities market. Dividends, if any, are paid to investors in US dollars.
On which exchanges is Zai Lab listed and what are the ticker symbols?
Zai Lab's ADSs began trading on The NASDAQ Global Market on September 20, 2017 under the ticker symbol ZLAB. Zai Lab’s ordinary shares began trading on the Hong Kong Stock Exchange on September 28, 2020, under the stock code 9688.
How can I purchase or sell Zai Lab's ordinary shares or American Depositary Shares?
Ordinary shares and American Depositary Receipts, which represent ownership in American Depositary Shares, can be purchased through a licensed securities broker.
Would a holder of American Depositary Shares have the right to receive any dividends Zai Lab may issue?
A holder would generally have the right to receive dividends Zai Lab makes on the American Depositary Shares deposited with the custodian, Citibank, N.A. Holders will receive such distributions in proportion to the number of American Depositary Shares held as of the specified record date, after deduction of the applicable fees, taxes and expenses. Zai Lab does not currently pay a dividend and has no current plan to begin paying a dividend.
As a holder, how do I vote my shares at Zai Lab's Annual General Meeting?
As a holder, you generally have the right under the deposit agreement to instruct the depositary bank to exercise the voting rights for the ordinary shares represented by your American Depositary Shares. At Zai Lab's request, the depositary bank will distribute to holders any notice of a shareholders' meeting together with information explaining how to instruct the depositary bank to exercise the voting rights of the ordinary shares represented by American Depositary Shares.
What is the difference between a registered holder and a beneficial holder?
A registered holder is one whose name appears on the books of the depositary. The registered holder is considered the owner of record. A beneficial holder is one whose holdings are registered in a name other than their own, such as the name of a broker, bank or nominee account.
If I am a registered American Depositary Share holder, how do I change my details, such as name and address?
Please contact Citibank Shareholder Services when you move so that your account records can be updated. Citibank Shareholder Services can be contacted toll free at 1-877-Citi-ADR (248-4237), International: 1-781-575-4555 during Monday-Friday 08:30 AM through 6:00 PM ET or by email at Citibank@shareholders-online.com. Or visit Citibank's Transfer Agent website at https://www.computershare.com/us.
If I am an ordinary shareholder, how do I change my details?
For shareholder enquiries relating to your ordinary shareholding, such as changing your name, address and shareholder certificates, please contact: ZaiIR@zailaboratory.com.
How do I contact Zai Lab with additional questions or inquiries?
You may submit an inquiry via our information request form, which can be found in the Investor Resources section on our website, or by sending an email to ZaiIR@zailaboratory.com.