Exhibit 10.10

ZAI LAB LIMITED

NON-EMPLOYEE DIRECTOR COMPENSATION POLICY

Effective as of the consummation of the initial public offering (the “IPO”) of the American depository shares (“ADS”) of Zai Lab Limited (the “Company”), each individual who provides services to the Company as a director, other than a director who is employed by the Company or an affiliate, (a “Non-Employee Director”) shall be entitled to receive the following amounts of compensation:

Type of Compensation	Amount and Form of Payment
Annual cash retainer	$50,000 (payable in cash on a quarterly basis)
Equity retainer	Commencing in calendar year 2018, annual grant of restricted stock in respect of 75,000 ordinary shares that shall vest in full on the first anniversary of the date of grant, subject to the director’s continued service as a member of the board of directors of the Company through such date In connection with the IPO, grant of restricted stock in respect of 150,000 ordinary shares to be made to each Non-Employee Director, other the Compensation Committee Chair, who is appointed to the board of directors of the Company following the adoption of this policy by the board of directors of the Company and whose appointment is effective prior to the IPO; grants will vest as to 50,000 shares on each of the first three anniversaries of the date of grant, subject to the director’s continued service as a member of the board of directors of the Company through such date
Additional annual cash retainer for Audit Committee chair	$20,000 (payable in cash on a quarterly basis)
Additional annual cash retainer for Audit Committee member	$10,000 (payable in cash on a quarterly basis)
Additional annual cash retainer for Compensation Committee chair	$15,000 (payable in cash on a quarterly basis)
Additional annual cash retainer for Compensation Committee member	$7,500 (payable in cash on a quarterly basis)
Additional annual cash retainer for Nominating Committee chair	$10,000 (payable in cash on a quarterly basis)
Additional annual cash retainer for Nominating Committee member	$5,000 (payable in cash on a quarterly basis)

In addition, Non-Employee Directors will be reimbursed by the Company for reasonable and customary expenses incurred in connection with attendance at board of director and committee meetings, in accordance with the Company’s policies as in effect from time to time.

For the avoidance of doubt, directors who are (i) employees of the Company, (ii) employees of one of its affiliates or (iii) (a) are affiliated with a shareholder holding more than one percent (1%) of the ordinary shares or ordinary share equivalents of the Company or (b) individually (or through any trust or estate planning entity) hold more than one percent (1%) of the ordinary shares or ordinary share equivalents) of the Company will not receive compensation for their service as a director, other than reimbursement for reasonable and customary expenses incurred in connection with attendance at board of director and committee meetings, in accordance with the Company’s policies as in effect from time to time.