Document:

EX-10.15

 Exhibit 10.15 

EMPLOYMENT AGREEMENT 

(James Yan) 
 THIS
EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of March 10th, 2015 (the “Effective Date”), by and between Zai Lab (Hong Kong) Ltd., a Hong Kong Corporation (the “Company”), and
James Yan, an individual (“Employee”) residing at 400 Chateau Dr., Buffalo Grove, IL USA and whose US passport number is #########. 

RECITALS 
 The Company is
engaged in the business of researching, developing, manufacturing, commercialization of drug products in the pharmaceutical industry, including and without limitation to sales and marketing of both small molecule and large molecule therapeutics (the
“Business Of The Company”), and Employee is qualified to engage in providing such services. 
 AGREEMENT 

NOW, THEREFORE, in consideration of the promises and the respective covenants and agreements of the parties, and for good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the parties agree as follows: 
 1. EMPLOYMENT. Subject to the
provisions of Sections 4, 5, 6, and 7 hereof, the term of the employment hereunder will commence on August 1st, 2015 (the “Commencement Date”). During the term of this Agreement, the Company agrees
to continue the employment of Employee and Employee agrees to continue employment with the Company. 
 1.1 Employment by Company. The
Company agrees to employ Employee as the Executive Vice President of Early Development and Drug Safety of the Company, reporting to the Chief Executive Officer, and to render such services and to perform such duties as are normally associated
with and inherent in the capacity in which Employee will be employed, as well as such other duties as shall from time to time be assigned to Employee by the Chief Executive Officer. In furtherance of the foregoing, the Employee hereby agrees to
perform faithfully such duties and responsibilities and the other reasonable duties and responsibilities assigned to him from time to time by the Chief Executive Officer. 

1.2 Acceptance of Employment. Employee accepts such employment and agrees to render the services required of Employee under this
Agreement. Except for reasonable vacations, absences due to temporary illness, and activities that may be mutually agreed to by the parties, Employee shall devote his entire time, attention and energies during normal business hours and such evenings
and weekends as may be reasonably required for the discharge of his duties to the business of the Company and the performance of Employee’s duties under this Agreement. 

1.3 Positions with Subsidiaries. If requested by the Company and mutually agreed upon by Employee, Employee agrees to serve without
additional compensation if elected or appointed as an officer and/or director of the Company and any of the subsidiaries or affiliates of the Company and in one or more executive offices of any of the subsidiaries of the Company, provided that
Employee is indemnified for serving in any and all such capacities pursuant to the indemnity provisions set forth in the Bylaws of such subsidiaries and/or affiliates. 

 Conflicts of Interest. Employee has reviewed with the Board of Directors of the Company
(the “Board”) the present directorships, ownership interests and other positions held by Employee in all of the business organizations of Employee which may be directly competitive or directly in conflict with the Company. Employee
agrees to review with the Board any potential directorships, ownership interests and other positions with business organizations which may be directly competitive or directly in conflict with the Company. Employee is precluded from owning an
interest in another company or serving as an employee, director or member of another company that may be directly competitive or directly in conflict with the Company until such interest is presented to the Board and the Board consents to such
interest or employment. The Company further acknowledges and agrees that, subject to the prior written approval by a majority of the Board (which majority shall exclude the Employee if the Employee is a then current member of the Board) and
consistent with the terms of the Compliance Agreement (as defined below), the Employee may serve on the boards of directors and advisory boards of other companies provided that such service does not interfere with the performance of Employee’s
duties hereunder. 
 2. PLACE OF PERFORMANCE. Employee shall be based in Shanghai, China. The Company may require that Employee travel on the
Business Of The Company to an extent substantially consistent with the present business travel obligations and Business Of The Company. 
 3.
COMPENSATION BENEFITS AND EXPENSE REIMBURSEMENTS. 
 3.1 Base Salary. In consideration for the agreement of Employee to be
employed under this Agreement, Employee shall receive from the Company an annual base salary (“Base Salary”) of US$200,000 plus a guaranteed annual bonus of US$50,000, with the understanding that up to forty percent (40%) of the
Base Salary may be paid by a subsidiary of Zai (as defined below). This Base Salary, and all other compensation and reimbursement under the Agreement, may be provided through a human resources service organization, and will be payable in such
installments as are applicable to employees of the Company at substantially the same service level as the Employee. The Base Salary to be paid to the Employee will be subject to reduction for payroll tax withholdings legally required or such other
reductions properly requested by the Employee. The Company shall pay such Base Salary in arrears on the last working day (Monday to Friday) of each month in accordance with the standard payroll procedures of the Company. Employee’s Base Salary
will be subject to review and adjustments will be made based upon the Company’s normal performance review practices. 
 3.2 Stock
Options. Subject to the approval of the Board, Employee shall be granted an option to purchase two million shares (2,000,000) shares of Company common stock (the “Option”) at an exercise price equal to the fair market value of
common stock on the date of grant in accordance with the Zai Lab, Ltd. Stock Option Plan (the “Plan”). The Option shall vest in accordance with the standard vesting schedule of the Company as follows: (i) twenty percent (20%)
of the shares subject to the Option shall vest at the end of the first year following the date of Option grant; and (ii) eighty percent (80%) of the shares subject to the Option shall vest in equal monthly increments over the remaining four
(4) years, subject to the Employee continuing to provide services to the Company through each applicable date. The Option shall fully vest immediately upon a change in control of Company in which (i) a new person or new entity

  
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obtains a fifty percent (50%) or greater ownership interest of Company or (ii) consummation of a reorganization, merger, share exchange, consolidation, or sale or disposition of all or
substantially all of the assets of the Company. The Option will be subject to the terms, definitions and provisions of the Plan and the stock option agreement by and between the Employee and the Company (the “Option Agreement”),
both of which documents are incorporated herein by reference. 
 3.3 Bonus. At the conclusion of each calendar year during the
Employment Period, the Employee shall be entitled to receive an annual bonus, the amount of which shall be reasonably determined by the Board, acting in good faith. 

3.4 Fringe Benefits. During the Employment Period, the Employee will be entitled to the fringe benefits that are made available to
Employee of the Company and such other benefits as are determined by the Board, in its sole and exclusive discretion. 
 3.5
Reimbursements. During the Employment Period, the Employee will be reimbursed, in accordance with the practice applicable to Employees of the Company from time to time, for all reasonable traveling expenses and other disbursements incurred by
him for or on behalf of the Company in the performance of his duties hereunder upon presentation by the Employee of appropriate vouchers. 

3.6 Deductions. Recognizing that Employee is an employee for all purposes, the Company shall deduct from any compensation payable to
Employee the sums which the Company is required by law to deduct, including, but not limited to, government state withholding taxes, social security taxes and state disability insurance, and the Company shall pay any amounts so deducted to the
governmental entities entitled to such payments. 
 4. INVOLUNTARY TERMINATION. 

4.5 Disability. If the Employee dies, then the Employee’s employment by the Company hereunder shall automatically terminate on the
date of the Employee’s death. If the Employee is incapacitated or disabled by accident, sickness or otherwise so as to render him mentally or physically incapable of performing the services required to be performed by him under this Agreement
for a period of ninety (90) consecutive days or longer, or for ninety (90) days during any six (6) month period (such condition being herein referred to as “Disability”), the Company, at its option, may terminate the
Employee’s employment under this Agreement immediately upon giving him notice to that effect. In the case of a Disability, until the Company shall have terminated the Employee’s service in accordance with the foregoing, the Employee will
be entitled to receive compensation, at the rate and in the manner provided in Section 3. notwithstanding any such physical or mental disability. Termination pursuant to this Section 4 is
hereinafter referred to as an “Involuntary Termination”. 
 4.6 Substitution. The Board may designate another
employee to act in the Employee’s place during any period of Disability suffered by the Employee during the Employment Period. Notwithstanding any such designation, the Employee shall continue to receive the Employee’s Base Salary and
benefits in accordance with Section 3 of this Agreement until the Employee becomes eligible for disability income under the Company’s disability income insurance (if any) or until the termination of the Employee’s
employment, whichever shall first occur. 

  
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 4.7 Disability Income Payments. While receiving disability income payments under the
Company’s disability income insurance (if any), the Employee shall not be entitled to receive any Base Salary under Section 3.1, but shall continue to participate in all other compensation and benefits in accordance
with Sections 3.3 until the date of the Employee’s termination of employment. 
 4.8 Verification of Disability. If any
question shall arise as to whether during any period the Employee is disabled through any illness, injury, accident or condition of either a physical or psychological nature so as to be unable to perform substantially all of the Employee’s
duties and responsibilities hereunder, the Employee may, and at the request of the Company shall, submit to a medical examination by a physician selected by the Company to whom the Employee or the Employee’s guardian has no reasonable objection
to determine whether the Employee is so disabled and such determination shall for the purposes of this Agreement be conclusive of the issue. If such question shall arise and the Employee shall fail to submit to such medical examination, the
Company’s determination of the issue shall be binding on the Employee. 
 5. TERMINATION FOR CAUSE. The Company, on recommendation from
the Board, may terminate the employment of the Employee hereunder at any time during the Employment Period for “Cause” (such termination being hereinafter referred to as a “Termination for Cause”) by giving the Employee
notice of such termination, upon the giving of which such termination shall take effect immediately. For the purpose of this Section 5. “Cause” means any one of the following grounds: 

 

	 	(i)	repeated drunkenness or use of illegal drugs which adversely interferes with the performance of the Employee’s obligations and duties in the Company; 

 

	 	(ii)	the Employee’s conviction of a felony, or any crime involving fraud or misrepresentation or violation of applicable securities laws; 

 

	 	(iii)	gross mismanagement by the Employee of the business and affairs of the Company or any subsidiary of the Company which directly results in a material loss to the Company and for which the Company has reasonable proof was
committed by the Employee; 

  

	 	(iv)	material violation of any material terms of this Agreement or the Compliance Agreement; or 

  

	 	(v)	a conclusive finding by an independent fact finder appointed by the Board for any willful misconduct, dishonesty or acts of moral turpitude by the Employee which is materially detrimental to the interests and well-being
of the Company, including, without limitation, harm to its business or reputation. 

  
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 6. TERMINATION WITHOUT CAUSE. The Company, on recommendation from the Board, may terminate the
employment of the Employee hereunder at any time during the Employment Period without “Cause” (such termination being hereinafter called a “Termination Without Cause”) by giving the Employee notice of such termination. The
termination of service under this Section 6 will take effect upon the giving of reasonable advance notice. 
 7. TERMINATION BY
THE EMPLOYEE. 
 7.1 Without Good Reason. Any termination of the employment of the Employee hereunder other than as a result of an
Involuntary Termination, a Termination For Cause, a Termination Without Cause or a Termination for Good Reason will be referred to hereinafter as a “Voluntary Termination”. A Voluntary Termination will be deemed to be effective
following reasonable notice by the appropriate party. 
 7.2 With Good Reason. The Employee may terminate the services of such
Employee hereunder at any time for Good Reason (as defined below) by giving the Company written notice of such termination, provided that such notice specifies: (i) the basis for termination and (ii) the effective date of termination (such
termination being hereinafter referred to as a “Termination for Good Reason”). For purposes of this Agreement, the term “Good Reason” shall mean (a) any material diminution of the Employee’s duties or
responsibilities hereunder (except in each case in connection with the Termination for Cause or pursuant to Section 4.1) or the assignment to the Employee of duties or responsibilities that are materially inconsistent with
the Employee’s then current position; (b) any material breach of the Agreement by the Company which is not cured within ten (10) business day days after written notice thereof is given to the Company; or (c) a relocation of the
Employee (other than any relocation requested by the Employee) from the place of initial assignment of the Employee by the Company to a location more than thirty (30) kilometers from such location, other than on a temporary basis not to exceed
a period equal to six (6) calendar months. 
 8. EFFECT OF TERMINATION ON SERVICES. 

8.1 Voluntary Termination or a Termination for Cause. Upon the termination of the Employee’s employment hereunder pursuant to a
Voluntary Termination or a Termination for Cause, neither the Employee nor his beneficiary or estate will have any further rights or claims against the Company, its affiliates, or its subsidiaries under this Agreement except to receive: 

 

	 	(i)	the unpaid portion of the Base Salary provided for in Section 3.1, computed on a pro rata basis to the date of such termination; and 

 

	 	(ii)	reimbursement for any expenses for which the Employee shall not have theretofore been reimbursed as provided in Section 3.5. 

8.2 Involuntary Termination. Upon the termination of the Employee’s employment hereunder pursuant to an Involuntary Termination,
neither the Employee nor his beneficiary or estate will have any further rights or claims against the Company, its affiliates or its subsidiaries under this Agreement except to receive: 

 

	 	(i)	a termination payment equal to that provided for in Section 8.1(i) hereto; 

  
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	 	(ii)	an aggregate amount equal to the Base Salary and fringe benefits for one (1) month, payable from the date of such termination in accordance with the Company’s normal payroll policies and at the same rate and
in the same manner as set forth in Sections 3.1 and T3 hereof, plus any additional compensation as may be expressly required under applicable law; and 

  

	 	(iii)	reimbursement for any expenses for which the Employee shall not have theretofore been reimbursed as provided in Section 3.5. 

8.3 Other Terminations. Upon the termination of the Employee’s employment hereunder pursuant to a Termination Without Cause or a
Termination for Good Reason, neither the Employee nor his beneficiary or estate will have any further rights or claims against the Company, its affiliates or its subsidiaries under this Agreement except to receive: 

 

	 	(i)	a termination payment equal to that provided for in Section 8.1(i) hereto; 

  

	 	(ii)	an aggregate amount equal to the Base Salary and fringe benefits (i) for one (1) month if such termination occurs prior to the third (3rd) anniversary of
the Commencement Date, or (ii) for three (3) months if such termination occurs on or following the third (3rd) anniversary of the Commencement Date, (in either case, such one
(1) month or three (3) months, the “Severance Period”), payable from the date of such termination in accordance with the Company’s normal payroll policies and at the same rate and in the same manner as set forth in
Sections 3.1 and 33 hereof, plus any additional compensation as may be expressly required under applicable law; and 

  

	 	(iii)	reimbursement for any expenses for which the Employee shall not have theretofore been reimbursed as provided in Section 3.5. 

8.4 Release. The parties acknowledge and agree that damages which will result to the Employee for termination by the Company without
Cause or other breach of this Agreement by the Company shall be extremely difficult or impossible to establish or prove, and agree that the payments made to the Employee during the Severance Period shall constitute liquidated damages for any breach
of this Agreement by the Company through the date of termination. The Employee agrees that, except for such other payments and benefits to which the Employee may be entitled as expressly provided by the terms of this Agreement or any applicable
benefit plan, such liquidated damages shall be in lieu of all other claims that the Employee may make by reason of termination of her/his employment or any such breach of this Agreement and that, as a condition to receiving payments during the
Severance Period, the Employee will execute a release of claims in a form reasonably satisfactory to the Company. 
 8.5 Conditions to
Receipt of Severance. The receipt of any severance pursuant to Section 8.3 will be subject to Employee signing and not revoking a separation agreement and release of claims in a form reasonably satisfactory to the Company and provided that
such separation agreement and release of claims becomes effective and irrevocable no later than sixty 

  
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(60) days following the termination date (such deadline, the “Release Deadline”). If the release of claims does not become effective by the Release Deadline, Employee will
forfeit any rights to severance or benefits under this Agreement. In no event will severance payments or benefits be paid or provided until the release of claims becomes effective and irrevocable. 

9. CONFIDENTIAL INFORMATION. 
 9.1
Ownership of Information. Employee acknowledges and agrees that the Company has expended and plans to continue to expend substantial sums in the development, acquisition and use of the following information, and the following information,
whether in oral, written, graphic or machine-readable form, is conclusively a trade secret owned by the Company: (i) the work product resulting from or related to the services performed under this Agreement; (ii) the computer software of
the Company, including documentation; (iii) the buying habits and practices of the purchasing agents and customers of the Company; (iv) the details of the contractual relationship between the Company and Employee; (v) the marketing
methods and related data of the Company; (vi) the identity of the vendors and suppliers of the Company; (vii) the costs of the labor and materials used by the Company; (viii) the compensation paid to and other terms of employment of
the employees, agents and independent contractors of the Company; (ix) the operational methods and procedures of the Company; (x) the routing lists of the Company; (xi) the financial statements and records of the Company; and
(xii) the type, nature and amount purchased from the Company by customers of the Company (collectively, the “Trade Secrets”). Employee agrees that all information, knowledge, including any source code, object code, enhancements
and modifications, all files, including input and output materials, all documentation related to such programs and files, all media upon which any such computer programs, files and documentation are located (including tapes, disks, and other storage
media), records, customer lists, know-how, Trade Secrets, trademarks and other proprietary information related to the Company is and shall be the property of the Company and, as such, is confidential and
proprietary to the Company (collectively, the “Confidential Information”). 
 9.2 Protection of Information.
Employee agrees: (i) without limiting the other provisions of this Section 5.2, to use at least the same degree of care with the Confidential Information as Employee uses with respect to similar confidential information owned by Employee;
(ii) to exercise diligence in maintaining in strict confidence and not disclosing, releasing or permitting the disclosure of the Confidential Information; (iii) not to use such Confidential Information, regardless of how obtained by
Employee, for the benefit of Employee or other than for the performance of the obligations of Employee under this Agreement; (iv) not to remove any copyright or proprietary rights notice attached to or included in any Confidential Information;
(v) to advise the Company in writing if Employee learns of any use or disclosure of Confidential Information by any current or former employee or consultant; and (vi) that the unauthorized disclosure or misuse of such Confidential
Information could irreparably damage the Company and/or third parties dealing with the Company. 
 9.3 Limitations of
Confidentiality. Notwithstanding anything in this Agreement to the contrary, Employee shall have no liability or obligation with regard to any Confidential Information which: (i) was publicly known and generally available in the public
domain at the time it was disclosed to a third party or becomes publicly known and generally available in the public domain through no fault of Employee; (ii) is disclosed to a third party with the prior

  
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written approval of the Company; (iii) becomes known to Employee through a source other than the Company without breach of this Agreement by Employee and is otherwise not in violation of the
rights of the Company; (iv) is disclosed to a third party by the Company without restrictions similar to those contained in this Agreement; or (v) is disclosed to a third party pursuant to the order or requirement of a court,
administrative agency or other governmental body provided that (A) Employee will provide the Company with prompt written notice, if legally permissible, and will use its best efforts to assist the Company in seeking a protective order or
another appropriate remedy, (B) if the Company waives Employee’s compliance with this Agreement or fails to obtain a protective order or other appropriate remedy, Employee will furnish only that portion of the Confidential Information that
is legally required to be disclosed and (C) any Confidential Information so disclosed shall maintain its confidentiality protection for all purposes other than such legally compelled disclosure. 

10. COMPLIANCE AGREEMENT. As a pre-condition to the effectiveness of this Agreement, the Employee agrees
to execute and deliver the Agreement Regarding Confidentiality, Trade Secrets, Intellectual Property and Competitive Activities attached hereto as Exhibit A (the “Compliance Agreement”), the terms and conditions of which are
specifically incorporated herein by reference. The obligation of the Company to make payments to or on behalf of the Employee under Section 8.2(ii) or Section 8.3(ii) above is expressly conditioned
upon the Employee’s continued performance of the Employee’s obligations under the Compliance Agreement. 
 11.
AT-WILL EMPLOYMENT. Employee’s employment with Company is and continues to be at-will and not for any specified period and may be terminated at any
time, with or without cause or advance notice, by either Employee or Company. No representative of Company, other than a person authorized by the Board, has the authority to alter the at-will employment
relationship. Any change to the at-will employment relationship must be by specific, written agreement signed by Employee and an authorized representative of the Board. Nothing in this Agreement is intended to
or should be construed to contradict, modify or alter this at-will relationship. 
 12. INDEMNIFICATION.
The Company shall indemnify, defend, and hold Employee harmless to the maximum extent permitted by law against judgments, fines, amounts paid in settlement, and reasonable expenses, including attorneys’ fees, incurred by Employee in
connection with the defense of, or as a result of, any action or proceeding (or any appeal from any action or proceeding) in which Employee is made or is threatened to be made a party, by reason of the fact that Employee is or was an officer of the
Company, regardless of whether such action or proceeding is brought by or in the right of the Company, to procure judgment in favor of the Company (or other than by or in the right of the Company). The Company further represents and warrants:
(i) that Employee is and shall continue to be covered and insured up to the maximum limits provided by all insurance which the Company maintains to indemnify the directors and officers of the Company (and to indemnify the Company for any
obligations which Employee incurs as a result of the undertaking of the Company to indemnify the directors and officers of the Company); (ii) that the Company will exert the best efforts of the Company to maintain such insurance, and not less than
the present limits of insurance, in effect throughout the term of the employment of Employee; and (iii) that the undertakings of indemnification and maintenance of insurance pursuant to this Section 12 Indemnification) are not in conflict
with the Articles of Incorporation or the Bylaws of the Company or with any validly existing agreement or other proper corporate action of the Company. 

  
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 13. COVENANT NOT TO COMPETE; NON-SOLICITATION. Employee
covenants and agrees that for twelve (12) months after the termination date of Employee, Employee will not directly or indirectly or by action in concert with others: 

13.1 Contact, induce or influence or seek to induce or influence any person who is an employee, agent, independent contractor, supplier,
customer, officer or shareholder of the Company to terminate the employment of such person or ownership in the Company by such person without regard to whether such person would subsequently then be engaged in a business or own an interest in a
business competitive with the Business Of The Company; 
 13.2 Advance or lend funds to, or acquire an interest in excess of one percent
(1.0%) in, any corporation, partnership, joint venture, trust, sole proprietorship or individual which is or may be competitive with the Company or which might place Employee in a position competitive with the Company; and 

13.3 Serve as an employee, officer, agent, director, or independent contractor or promote or participate in a business or business activity
which is or may be competitive with the Business Of The Company or which might place Employee in a position competitive with the Business Of The Company. 

13.4 The covenants contained in this Section 9 shall be construed as a series of separate covenants, one for each country, province,
state, city or other political subdivision in which the Company currently engages in its business or, during the term of this Agreement, becomes engaged in its business. Except for geographic coverage, each such separate covenant shall be deemed
identical in terms to the covenant contained in this Section 9. If, in any judicial proceeding, a court refuses to enforce any of such separate covenants (or any part thereof), then such unenforceable covenant (or such part) shall be eliminated
from this Agreement to the extent necessary to permit the remaining separate covenants (or portions thereof) to be enforced. In the event that the provisions of this Section 9 are deemed to exceed the time, geographic or scope limitations
permitted by applicable law, then such provisions shall be reformed to the maximum time, geographic or scope limitations, as the case may be, permitted by applicable law. 

14. REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company represents and warrants to Employee that the execution of this Agreement by the
Company has been duly authorized by resolution of the Board. 
 15. REPRESENTATIONS AND WARRANTIES OF EMPLOYEE. Employee represents and
warrants to the Company that: (i) Employee has the proper skill, training and background so as to be able to perform under the terms of this Agreement in a competent and professional manner; (ii) Employee will not infringe any patent,
copyright, trademark, trade secret or other proprietary right of any person; and (iii) Employee will not use any trade secrets or Confidential Information owned by any third party during the term of this Agreement. 

  
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 16. ENFORCEMENT. It is the desire and intent of the parties hereto that the provisions of this
Agreement will be enforced to the fullest extent permissible under the laws and public policies applied in each jurisdiction in which enforcement is sought. Accordingly, to the extent that a restriction contained in this Agreement is more
restrictive than permitted by the laws of any jurisdiction whose law may be deemed to govern the review and interpretation of this Agreement, the terms of such restriction, for the purpose only of the operation of such restriction in such
jurisdiction, will be the maximum restriction allowed by the laws of such jurisdiction and such restriction will be deemed to have been revised accordingly herein. A court having jurisdiction over an action arising out of or seeking enforcement of
any restriction contained in this Agreement may modify the terms of such restriction in accordance with this Section 16. 
 17.
DISPUTE RESOLUTION. In the event the parties hereto are unable to settle a dispute between them regarding this Agreement through friendly consultation, such dispute shall be referred to and finally settled by arbitration at the Hong
Kong International Arbitration Centre in accordance with the UNCITRAL Arbitration Rules (the “UNCITRAL Rules”) in effect, which rules are deemed to be incorporated by reference into this Section 17
applying the laws of Hong Kong, without regard to its principles of conflicts of laws. The arbitration tribunal shall consist of three (3) arbitrators to be appointed according to the UNCITRAL Rules (the “Arbitration
Board”). The language of the arbitration shall be English. The Arbitration Board shall decide any such dispute or claim strictly in accordance with the governing law specified in Section 19.5. Judgment upon
any arbitral award rendered hereunder may be entered in any court having jurisdiction, or application may be made to such court for a judicial acceptance of the award and an order of enforcement, as the case may be. The costs and expenses of the
arbitration, including the fees of the Arbitration Board, shall be borne equally by each party to the dispute or claim, and each party shall pay its own fees, disbursements and other charges of its counsel; provided that the Arbitration Board shall
have the right to allocate the costs and expenses between each party as the Arbitration Board deems equitable. Any award made by the Arbitration Board shall be final and binding on each of the parties that were parties to the dispute. The parties
expressly agree to waive the applicability of any laws and regulations that would otherwise give the right to appeal the decisions of the Arbitration Board so that there shall be no appeal to any court of law for the award of the Arbitration Board,
and a party shall not challenge or resist the enforcement action taken by any other party in whose favor an award of the Arbitration Board was given. 
 18.
COVENANT AGAINST ASSIGNMENT. Employee may not assign any rights or delegate any of the duties of Employee under this Agreement. As used in this provision, “assignment” and “delegation” shall mean any sale, gift,
pledge, hypothecation, encumbrance, or other transfer of all or any portion of the rights, obligations, or liabilities in or arising from this Agreement to any person or entity, whether by operation of law or otherwise, and regardless of the legal
form of the transaction in which the attempted transfer occurs. 
 19. MISCELLANEOUS. 

19.1 Notices. Any notice, request, demand or other communication required or permitted to be given to a party pursuant to the provisions
of this Agreement will be in writing and will be effective and deemed given under this Agreement on the earliest of: (i) the date of personal delivery, (ii) the date of transmission by facsimile or
e-mail, with confirmed transmission and receipt, (iii) two (2) days after deposit with a nationally-recognized courier or overnight service such as Federal Express, DHL, or (iv) five (5) days after
mailing via certified mail, return receipt requested. All notices not delivered personally or by facsimile will be sent with postage and other charges prepaid and properly addressed to the party to be notified at the address set forth on the
signature pages hereto. 

  
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 19.2 Gender; Time. The parties agree that any use of words in any gender in this Agreement
shall also refer to the masculine, feminine or neuter gender, as the case may require. Time is of the essence in performance of the rights and obligations under this Agreement. 

19.3 Survival. The provisions set forth in Sections 8, 16, 17, 19.3, 19.5 and 19.9 of this
Agreement shall survive the termination of this Agreement. 
 19.4 Binding Agreement; Benefit. The provisions of this Agreement will
be binding upon and will inure to the benefit of, the respective heirs, legal representatives and successors of the parties hereto. 
 19.5
Governing Law. This Agreement will be governed by, and construed and enforced in accordance with, the laws of Hong Kong, without giving effect to its principles or rules of conflict laws to the extent such principles or rules would require or
permit the application of the laws of another jurisdiction. 
 19.6 Waiver of Breach. The waiver by either party of a breach of any
provision of this Agreement by the other party must be in writing and will not operate or be construed as a waiver of any subsequent breach by such other party. 

19.7 Entire Agreement; Amendments. This Agreement contains the entire agreement between the parties with respect to the subject matter
hereof and supersedes all prior agreements or understanding among the parties with respect thereto. This Agreement may be amended only by an agreement in writing signed by each of the parties hereto. 

19.8 Headings. The Section headings contained in this Agreement are for reference purposes only and will not affect in any way the
meaning or interpretation of this Agreement. 
 19.9 Severability. Subject to the provisions of Section 16
above, any provision of this Agreement that is prohibited or unenforceable in any jurisdiction will, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof,
and any such prohibition or unenforceability in any jurisdiction will not invalidate or render unenforceable such provision in any other jurisdiction. 

19.10 Assignment. This Agreement is personal in its nature and the parties hereto shall not, without the consent of the other party
hereto, assign or transfer this Agreement or any rights or obligations hereunder, provided, however, that the rights and obligations of the Company hereunder shall be assignable and delegable in connection with any subsequent merger, consolidation,
sale of all or substantially all of the assets or shares of the Company or similar transaction involving the Company or a successor corporation. 

19.11 Confidentiality. The Employee agrees not to disclose this Agreement or its terms to any person or entity, other than the
Employee’s agents, advisors or representatives, except as consented to by the Company in writing or as may be required by law. 

  
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 19.12 Further Assurances. The Employee agrees to execute, acknowledge, seal and deliver
such further assurances, documents, applications, agreements and instruments, and to take such further actions, as the Company may reasonably request in order to accomplish the purposes of this Agreement. 

19.13 Costs. Each of the parties shall pay all costs and expenses incurred or to be incurred by such party in negotiating and preparing
this Agreement and in closing and carrying out the transactions contemplated by this Agreement. 
 19.14 Interpretation of Agreement.
This Agreement has been negotiated at arm’s length between persons knowledgeable in the matters dealt with in this Agreement. In addition, each party has been represented by experienced and knowledgeable legal counsel. Accordingly, any rule of
law, or any legal decision that would require interpretation of any ambiguities in this Agreement against the party that has drafted it, is of no application and is waived. 

19.15 Counterparts. The parties may execute this Agreement in any number of counterparts and, as so executed, the counterparts shall
constitute one and the same document. The parties agree that each such counterpart is an original and shall be binding upon all of the parties, even though all of the parties are not signatories to the same counterpart. 

19.16 Merger of Prior Agreements and Understandings. This Agreement and the Proprietary Rights Agreement contains the entire
understanding among the parties, supersedes any prior or contemporaneous written or oral agreements, understandings and representations between the parties respecting the subject matter contained in this Agreement, and merges all prior negotiations
concerning such subject matter into this Agreement. The parties agree that there are no representations, agreements, arrangements or understandings, oral or written, between the parties relating to the subject matter of this Agreement which are not
fully expressed in this Agreement. 
 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK] 

  
 -12- 

 IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first above written.

  

							
	COMPANY:	 		  	EMPLOYEE:
			
	ZAI Lab (HK) Limited, a corporation	 		  	
				
	By:	 	 /s/ Samantha Du
	 		  	 /s/ James Yan

	Print Name: Samantha Du	 		  	JAMES YAN
	Title:	 	CEO	 		  	
			
	Address:	 		  	Address:
			
	 1000 Zhangheng Road, Bldg. 65

Pudong New Area, Shanghai, China
 Attention: Chief Executive
Officer
 Facsimile:
	 		  	
	E-mail:	 	  
	 		  	E-mail:                              
                                         
                        

 Signature Page of Employment AgreementEX-10.16

 Exhibit 10.16 

EMPLOYMENT AGREEMENT 

(Qi Liu) 
 THIS EMPLOYMENT
AGREEMENT (“Agreement”) is made and entered into as of November 1, 2015 (the “Effective Date”), by and between Zai Lab (Hong Kong) Ltd., a Hong Kong Corporation (the “Company”), and
Qi Liu, an individual (“Employee”) residing at 3 Overlook Circle, West Chester, PA 19382 and whose US passport number is #########. 

RECITALS 
 The Company is
engaged in the business of researching, developing, manufacturing, commercialization of drug products in the pharmaceutical industry, including and without limitation to sales and marketing of both small molecule and large molecule therapeutics (the
“Business Of The Company”), and Employee is qualified to engage in providing such services. 
 AGREEMENT 

NOW, THEREFORE, in consideration of the promises and the respective covenants and agreements of the parties, and for good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the parties agree as follows: 
 1. EMPLOYMENT. Subject to the
provisions of Sections 4, 5, 6, and 7 hereof, the term of the employment hereunder will commence on November 1st, 2015 (the “Commencement Date”). During the term of this Agreement, the
Company agrees to continue the employment of Employee and Employee agrees to continue employment with the Company. 
 1.1. Employment by
Company. The Company agrees to employ Employee as the Chief Medical Officer of the Company, to render such services and to perform such duties as are normally associated with and inherent in the capacity in which Employee will be
employed, as well as such other duties as shall from time to time be assigned to Employee by CEO. In furtherance of the foregoing, the Employee hereby agrees to perform faithfully such duties and responsibilities and the other reasonable duties and
responsibilities assigned to him from time to time by the Functional Head. 
 1.2. Acceptance of Employment. Employee accepts such
employment and agrees to render the services required of Employee under this Agreement. Except for reasonable vacations, absences due to temporary illness, and activities that may be mutually agreed to by the parties, Employee shall devote his
entire time, attention and energies during normal business hours and such evenings and weekends as may be reasonably required for the discharge of his duties to the business of the Company and the performance of Employee’s duties under this
Agreement. 
 1.3. Positions with Subsidiaries. If requested by the Company and mutually agreed upon by Employee, Employee agrees to
serve without additional compensation if elected or appointed as an officer and/or director of the Company and any of the subsidiaries or affiliates of the Company and in one or more executive offices of any of the subsidiaries of the Company,
provided that Employee is indemnified for serving in any and all such capacities pursuant to the indemnity provisions set forth in the Bylaws of such subsidiaries and/or affiliates. 

 1.4. Conflicts of Interest. Employee has reviewed with the Board of Directors of the
Company (the “Board”) the present directorships, ownership interests and other positions held by Employee in all of the business organizations of Employee which may be directly competitive or directly in conflict with the Company.
Employee agrees to review with the Board any potential directorships, ownership interests and other positions with business organizations which may be directly competitive or directly in conflict with the Company. Employee is precluded from owning
an interest in another company or serving as an employee, director or member of another company that may be directly competitive or directly in conflict with the Company until such interest is presented to the Board and the Board consents to such
interest or employment. The Company further acknowledges and agrees that, subject to the prior written approval by a majority of the Board (which majority shall exclude the Employee if the Employee is a then current member of the Board) and
consistent with the terms of the Compliance Agreement (as defined below), the Employee may serve on the boards of directors and advisory boards of other companies provided that such service does not interfere with the performance of Employee’s
duties hereunder. 
 2. PLACE OF PERFORMANCE. Employee shall be based in Shanghai, China. The Company may require that Employee travel on the
Business Of The Company to an extent substantially consistent with the present business travel obligations and Business Of The Company. 
 3.
COMPENSATION BENEFITS AND EXPENSE REIMBURSEMENTS. 
 3.1. Base Salary. In consideration for the agreement of Employee to be
employed under this Agreement, Employee shall receive from the Company an annual base salary (“Base Salary”) of US$340,000 plus a guaranteed annual bonus of US$60,000, with the understanding that up to forty percent (40%) of the
Base Salary may be paid by a subsidiary of Zai (as defined below). This Base Salary, and all other compensation and reimbursement under the Agreement, may be provided through a human resources service organization, and will be payable in such
installments as are applicable to employees of the Company at substantially the same service level as the Employee. The Base Salary to be paid to the Employee will be subject to reduction for payroll tax withholdings legally required or such other
reductions properly requested by the Employee. The Company shall pay such Base Salary in arrears on the last working day (Monday to Friday) of each month in accordance with the standard payroll procedures of the Company. Employee’s Base Salary
will be subject to review and adjustments will be made based upon the Company’s normal performance review practices. 
 3.2. Stock
Options. Subject to the approval of the Board, Employee shall be granted an option to purchase two million (2,000,000) shares of Company common stock (the “Option”) at an exercise price equal to the fair market value of common
stock on the date of grant in accordance with the Zai Lab Ltd Equity Incentive Plan (the “Plan”). The Option shall vest in accordance with the standard vesting schedule of the Company as follows: (i) twenty percent (20%) of the
shares subject to the Option shall vest at the end of the first year following the date of Option grant; and (ii) eighty percent (80%) of the shares subject to the Option shall vest in 

  
 -2- 

 
equal monthly increments over the remaining four (4) years, subject to the Employee continuing to provide services to the Company through each applicable date. The Option will be subject to
the terms, definitions and provisions of the Plan and the stock option agreement by and between the Employee and the Company (the “Option Agreement”), both of which documents are incorporated herein by reference. 

3.3. Bonus. At the conclusion of each calendar year during the Employment Period, the Employee shall be entitled to receive an annual
bonus, the amount of which shall be reasonably determined by the Board, acting in good faith. 
 3.4. Fringe Benefits. During the
Employment Period, the Employee will be entitled to the fringe benefits that are made available to Employee of the Company and such other benefits as are determined by the Board, in its sole and exclusive discretion. 

3.5. Reimbursements. During the Employment Period, the Employee will be reimbursed, in accordance with the practice applicable to
Employees of the Company from time to time, for all reasonable traveling expenses and other disbursements incurred by him for or on behalf of the Company in the performance of his duties hereunder upon presentation by the Employee of appropriate
vouchers. 
 3.6. Deductions. Recognizing that Employee is an employee for all purposes, the Company shall deduct from any
compensation payable to Employee the sums which the Company is required by law to deduct, including, but not limited to, government state withholding taxes, social security taxes and state disability insurance, and the Company shall pay any amounts
so deducted to the governmental entities entitled to such payments. 
 4. INVOLUNTARY TERMINATION. 

4.1. Disability. If the Employee dies, then the Employee’s employment by the Company hereunder shall automatically terminate on the
date of the Employee’s death. If the Employee is incapacitated or disabled by accident, sickness or otherwise so as to render him mentally or physically incapable of performing the services required to be performed by him under this Agreement
for a period of ninety (90) consecutive days or longer, or for ninety (90) days during any six (6) month period (such condition being herein referred to as “Disability”), the Company, at its option, may terminate the
Employee’s employment under this Agreement immediately upon giving him notice to that effect. In the case of a Disability, until the Company shall have terminated the Employee’s service in accordance with the foregoing, the Employee will
be entitled to receive compensation, at the rate and in the manner provided in Section 3, notwithstanding any such physical or mental disability. Termination pursuant to this Section 4 is
hereinafter referred to as an “Involuntary Termination”. 
 4.2. Substitution. The Board may designate another
employee to act in the Employee’s place during any period of Disability suffered by the Employee during the Employment Period. Notwithstanding any such designation, the Employee shall continue to receive the Employee’s Base Salary and
benefits in accordance with Section 3 of this Agreement until the Employee becomes eligible for disability income under the Company’s disability income insurance (if any) or until the termination of the Employee’s
employment, whichever shall first occur. 

  
 -3- 

 4.3. Disability Income Payments. While receiving disability income payments under the
Company’s disability income insurance (if any), the Employee shall not be entitled to receive any Base Salary under Section 3.1, but shall continue to participate in all other compensation and benefits in accordance with Sections 3.3 until
the date of the Employee’s termination of employment. 
 4.4. Verification of Disability. If any question shall arise as to
whether during any period the Employee is disabled through any illness, injury, accident or condition of either a physical or psychological nature so as to be unable to perform substantially all of the Employee’s duties and responsibilities
hereunder, the Employee may, and at the request of the Company shall, submit to a medical examination by a physician selected by the Company to whom the Employee or the Employee’s guardian has no reasonable objection to determine whether the
Employee is so disabled and such determination shall for the purposes of this Agreement be conclusive of the issue. If such question shall arise and the Employee shall fail to submit to such medical examination, the Company’s determination of
the issue shall be binding on the Employee. 
 5. TERMINATION FOR CAUSE. The Company, on recommendation from the Board, may terminate the
employment of the Employee hereunder at any time during the Employment Period for “Cause” (such termination being hereinafter referred to as a “Termination for Cause”) by giving the Employee notice of such termination,
upon the giving of which such termination shall take effect immediately. For the purpose of this Section 5, “Cause” means any one of the following grounds: 

 

	 	(i)	repeated drunkenness or use of illegal drugs which adversely interferes with the performance of the Employee’s obligations and duties in the Company; 

 

	 	(ii)	the Employee’s conviction of a felony, or any crime involving fraud or misrepresentation or violation of applicable securities laws; 

 

	 	(iii)	gross mismanagement by the Employee of the business and affairs of the Company or any subsidiary of the Company which directly results in a material loss to the Company and for which the Company has reasonable proof was
committed by the Employee; 

  

	 	(iv)	material violation of any material terms of this Agreement or the Compliance Agreement; or 

  

	 	(v)	a conclusive finding by an independent fact finder appointed by the Board for any willful misconduct, dishonesty or acts of moral turpitude by the Employee which is materially detrimental to the interests and well-being
of the Company, including, without limitation, harm to its business or reputation. 

  
 -4- 

 6. TERMINATION WITHOUT CAUSE. The Company, on recommendation from the Board, may terminate the
employment of the Employee hereunder at any time during the Employment Period without “Cause” (such termination being hereinafter called a “Termination Without Cause”) by giving the Employee notice of such termination. The
termination of service under this Section 6 will take effect upon the giving of reasonable advance notice. 
 7. TERMINATION BY
THE EMPLOYEE. 
 7.1. Without Good Reason. Any termination of the employment of the Employee hereunder other than as a result of
an Involuntary Termination, a Termination For Cause, a Termination Without Cause or a Termination for Good Reason will be referred to hereinafter as a “Voluntary Termination”. A Voluntary Termination will be deemed to be effective
following reasonable notice by the appropriate party. 
 7.2. With Good Reason. The Employee may terminate the services of such
Employee hereunder at any time for Good Reason (as defined below) by giving the Company written notice of such termination, provided that such notice specifies: (i) the basis for termination and (ii) the effective date of termination (such
termination being hereinafter referred to as a “Termination for Good Reason”). For purposes of this Agreement, the term “Good Reason” shall mean (a) any material diminution of the Employee’s duties or
responsibilities hereunder (except in each case in connection with the Termination for Cause or pursuant to Section 4.1) or the assignment to the Employee of duties or responsibilities that are materially inconsistent with
the Employee’s then current position; (b) any material breach of the Agreement by the Company which is not cured within ten (10) business day days after written notice thereof is given to the Company; or (c) a relocation of the
Employee (other than any relocation requested by the Employee) from the place of initial assignment of the Employee by the Company to a location more than thirty (30) kilometers from such location, other than on a temporary basis not to exceed
a period equal to six (6) calendar months. 
 8. EFFECT OF TERMINATION ON SERVICES. 

8.1. Voluntary Termination or a Termination for Cause. Upon the termination of the Employee’s employment hereunder pursuant to a
Voluntary Termination or a Termination for Cause, neither the Employee nor his beneficiary or estate will have any further rights or claims against the Company, its affiliates, or its subsidiaries under this Agreement except to receive: 

 

	 	(i)	the unpaid portion of the Base Salary provided for in Section 3.1, computed on a pro rata basis to the date of such termination; and 

 

	 	(ii)	reimbursement for any expenses for which the Employee shall not have theretofore been reimbursed as provided in Section 3.5. 

8.2. Involuntary Termination. Upon the termination of the Employee’s employment hereunder pursuant to an Involuntary Termination,
neither the Employee nor his beneficiary or estate will have any further rights or claims against the Company, its affiliates or its subsidiaries under this Agreement except to receive: 

 

	 	(i)	a termination payment equal to that provided for in Section 8.1(i) hereto; 

  
 -5- 

	 	(ii)	an aggregate amount equal to the Base Salary and fringe benefits for one (1) month, payable from the date of such termination in accordance with the Company’s normal payroll policies and at the same rate and
in the same manner as set forth in Sections 3.1 and 33 hereof, plus any additional compensation as may be expressly required under applicable law; and 

  

	 	(iii)	reimbursement for any expenses for which the Employee shall not have theretofore been reimbursed as provided in Section 3.5. 

8.3. Other Terminations. Upon the termination of the Employee’s employment hereunder pursuant to a Termination Without Cause or a
Termination for Good Reason, neither the Employee nor his beneficiary or estate will have any further rights or claims against the Company, its affiliates or its subsidiaries under this Agreement except to receive: 

 

	 	(i)	a termination payment equal to that provided for in Section 8.1 (i) hereto; 

  

	 	(ii)	an aggregate amount equal to the Base Salary and fringe benefits (i) for one (1) month if such termination occurs prior to the third (3rd) anniversary of
the Commencement Date, or (ii) for three (3) months if such termination occurs on or following the third (3ld) anniversary of the Commencement Date, (in either case, such one
(1) month or three (3) months, the “Severance Period”), payable from the date of such termination in accordance with the Company’s normal payroll policies and at the same rate and in the same manner as set forth in
Sections 3.1 and 3.3 hereof, plus any additional compensation as may be expressly required under applicable law; and 

  

	 	(iii)	reimbursement for any expenses for which the Employee shall not have theretofore been reimbursed as provided in Section 3.5. 

8.4. Release. The parties acknowledge and agree that damages which will result to the Employee for termination by the Company without
Cause or other breach of this Agreement by the Company shall be extremely difficult or impossible to establish or prove, and agree that the payments made to the Employee during the Severance Period shall constitute liquidated damages for any breach
of this Agreement by the Company through the date of termination. The Employee agrees that, except for such other payments and benefits to which the Employee may be entitled as expressly provided by the terms of this Agreement or any applicable
benefit plan, such liquidated damages shall be in lieu of all other claims that the Employee may make by reason of termination of her/his employment or any such breach of this Agreement and that, as a condition to receiving payments during the
Severance Period, the Employee will execute a release of claims in a form reasonably satisfactory to the Company. 
 8.5. Conditions to
Receipt of Severance. The receipt of any severance pursuant to Section 8.3 will be subject to Employee signing and not revoking a separation agreement and release of claims in a form reasonably satisfactory to the Company and provided that
such separation agreement and release of claims becomes effective and irrevocable no later than sixty (60) days following the termination date (such deadline, the “Release Deadline”). If the release

  
 -6- 

 
of claims does not become effective by the Release Deadline, Employee will forfeit any rights to severance or benefits under this Agreement. In no event will severance payments or benefits be
paid or provided until the release of claims becomes effective and irrevocable. 
 9. CONFIDENTIAL INFORMATION. 

9.1. Ownership of Information. Employee acknowledges and agrees that the Company has expended and plans to continue to expend
substantial sums in the development, acquisition and use of the following information, and the following information, whether in oral, written, graphic or machine-readable form, is conclusively a trade secret owned by the Company: (i) the work
product resulting from or related to the services performed under this Agreement; (ii) the computer software of the Company, including documentation; (iii) the buying habits and practices of the purchasing agents and customers of the
Company; (iv) the details of the contractual relationship between the Company and Employee; (v) the marketing methods and related data of the Company; (vi) the identity of the vendors and suppliers of the Company; (vii) the costs
of the labor and materials used by the Company; (viii) the compensation paid to and other terms of employment of the employees, agents and independent contractors of the Company; (ix) the operational methods and procedures of the Company;
(x) the routing lists of the Company; (xi) the financial statements and records of the Company; and (xii) the type, nature and amount purchased from the Company by customers of the Company (collectively, the “Trade
Secrets”). Employee agrees that all information, knowledge, including any source code, object code, enhancements and modifications, all files, including input and output materials, all documentation related to such programs and files, all
media upon which any such computer programs, files and documentation are located (including tapes, disks, and other storage media), records, customer lists, know-how, Trade Secrets, trademarks and other
proprietary information related to the Company is and shall be the property of the Company and, as such, is confidential and proprietary to the Company (collectively, the “Confidential Information”). 

9.2. Protection of Information. Employee agrees: (i) without limiting the other provisions of this Section 5.2, to use at
least the same degree of care with the Confidential Information as Employee uses with respect to similar confidential information owned by Employee; (ii) to exercise diligence in maintaining in strict confidence and not disclosing, releasing or
permitting the disclosure of the Confidential Information; (iii) not to use such Confidential Information, regardless of how obtained by Employee, for the benefit of Employee or other than for the performance of the obligations of Employee
under this Agreement; (iv) not to remove any copyright or proprietary rights notice attached to or included in any Confidential Information; (v) to advise the Company in writing if Employee learns of any use or disclosure of Confidential
Information by any current or former employee or consultant; and (vi) that the unauthorized disclosure or misuse of such Confidential Information could irreparably damage the Company and/or third parties dealing with the Company. 

9.3. Limitations of Confidentiality. Notwithstanding anything in this Agreement to the contrary, Employee shall have no liability or
obligation with regard to any Confidential Information which: (i) was publicly known and generally available in the public domain at the time it was disclosed to a third party or becomes publicly known and generally available in the public
domain through no fault of Employee; (ii) is disclosed to a third party with the prior 

  
 -7- 

 
written approval of the Company; (iii) becomes known to Employee through a source other than the Company without breach of this Agreement by Employee and is otherwise not in violation of the
rights of the Company; (iv) is disclosed to a third party by the Company without restrictions similar to those contained in this Agreement; or (v) is disclosed to a third party pursuant to the order or requirement of a court,
administrative agency or other governmental body provided that (A) Employee will provide the Company with prompt written notice, if legally permissible, and will use its best efforts to assist the Company in seeking a protective order or
another appropriate remedy, (B) if the Company waives Employee’s compliance with this Agreement or fails to obtain a protective order or other appropriate remedy, Employee will furnish only that portion of the Confidential Information that
is legally required to be disclosed and (C) any Confidential Information so disclosed shall maintain its confidentiality protection for all purposes other than such legally compelled disclosure. 

10. COMPLIANCE AGREEMENT. As a pre-condition to the effectiveness of this Agreement, the Employee agrees
to execute and deliver the Agreement Regarding Confidentiality, Trade Secrets, Intellectual Property and Competitive Activities attached hereto as Exhibit A (the “Compliance Agreement”), the terms and conditions of which are
specifically incorporated herein by reference. The obligation of the Company to make payments to or on behalf of the Employee under Section 8.2(ii) or Section 8.3(ii) above is expressly conditioned
upon the Employee’s continued performance of the Employee’s obligations under the Compliance Agreement. 
 11.
AT-WILL EMPLOYMENT. Employee’s employment with Company is and continues to be at-will and not for any specified period and may be terminated at any
time, with or without cause or advance notice, by either Employee or Company. No representative of Company, other than a person authorized by the Board, has the authority to alter the at-will employment
relationship. Any change to the at-will employment relationship must be by specific, written agreement signed by Employee and an authorized representative of the Board. Nothing in this Agreement is intended to
or should be construed to contradict, modify or alter this at-will relationship. 
 12. INDEMNIFICATION. 

12.1. Indemnification. In the event that (a) the Employee was or is a party or is threatened to be made a party to any Proceeding
(as defined below) by reason of the Employee’s Corporate Status (as defined below) or (b) the Employee was or is a party or is threatened to be made a party to any Proceeding by or in the right of the Company to procure a judgment in its
favor by reason of the Employee’s Corporate Status, the Employee shall be indemnified by the Company against all Expenses and Liabilities incurred or paid by the Employee in connection with such Proceeding (referred to herein as
“Indemnifiable Amounts”). For purposes hereof, the terms (i) “Proceeding” means any threatened, pending or completed claim, action, suit, arbitration, alternate dispute resolution process, investigation,
administrative hearing, appeal, or any other proceeding, whether civil, criminal, administrative, arbitrative or investigative, whether formal or informal, (ii) “Corporate Status” means the status of the Employee as an employee
and/or director of the Company, as applicable, (in) “Expenses” means all fees, costs and expenses incurred in connection with any Proceeding, including, without limitation, reasonable attorneys’ fees, disbursements and
retainers, fees and disbursements of expert 

  
 -8- 

 
witnesses, private investigators and professional advisors (including, without limitation, accountants and investment bankers), court costs, transcript costs, fees of experts, travel expenses,
duplicating, printing and binding costs, telephone and fax transmission charges, postage, delivery services, secretarial services and other disbursements and expenses and (iv) “Liabilities” means judgments, damages, liabilities,
losses, penalties, excise taxes, and fines. 
 12.2. Advancement of Expenses. The Company agrees that the Company shall pay to the
Employee all Indemnifiable Amounts incurred by the Employee in connection with any Proceeding, including a Proceeding by the right of the Company, in advance of the final disposition of such Proceeding, as the same are incurred, provided that the
Employee provides the Company with a written undertaking to repay the amount of Indemnifiable Amounts if it is finally determined by a court of competent jurisdiction that the Employee is not entitled under this Agreement to indemnification with
respect to such Indemnifiable Amounts. 
 12.3. Limitation on Indemnification. The Employee shall not be entitled to any
indemnification under this Section 12 if the Employee knowingly violated any duty, responsibility or obligation of the Founder imposed under this Agreement, the Compliance Agreement or any Company policy. 

12.4. Change in Law. To the extent that a change in applicable law (whether by statute or judicial decision) shall permit broader
indemnification or advancement of expenses than is provided under this Agreement, the Employee shall be entitled to such broader indemnification and advancements, and this Agreement shall be deemed to be amended to such extent. 

13. COVENANT NOT TO COMPETE; NON-SOLICITATION. Employee covenants and agrees that for twelve
(12) months after the termination date of Employee, Employee will not directly or indirectly or by action in concert with others: 

13.1. Contact, induce or influence or seek to induce or influence any person who is an employee, agent, independent contractor, supplier,
customer, officer or shareholder of the Company to terminate the employment of such person or ownership in the Company by such person without regard to whether such person would subsequently then be engaged in a business or own an interest in a
business competitive with the Business Of The Company; 
 13.2. Advance or lend funds to, or acquire an interest in excess of one percent
(1.0%) in, any corporation, partnership, joint venture, trust, sole proprietorship or individual which is or may be competitive with the Company or which might place Employee in a position competitive with the Company; and 

13.3. Serve as an employee, officer, agent, director, or independent contractor or promote or participate in a business or business activity
which is or may be competitive with the Business Of The Company or which might place Employee in a position competitive with the Business Of The Company. 

13.4. The covenants contained in this Section 9 shall be construed as a series of separate covenants, one for each country, province,
state, city or other political subdivision in which the Company currently engages in its business or, during the term of this Agreement, becomes engaged in its business. Except for geographic coverage, each such separate covenant

  
 -9- 

 
shall be deemed identical in terms to the covenant contained in this Section 9. If, in any judicial proceeding, a court refuses to enforce any of such separate covenants (or any part
thereof), then such unenforceable covenant (or such part) shall be eliminated from this Agreement to the extent necessary to permit the remaining separate covenants (or portions thereof) to be enforced. In the event that the provisions of this
Section 9 are deemed to exceed the time, geographic or scope limitations permitted by applicable law, then such provisions shall be reformed to the maximum time, geographic or scope limitations, as the case may be, permitted by applicable law.

 14. REPRESENTATIONS AND WARRANTIES OF EMPLOYEE. Employee represents and warrants to the Company that: (i) Employee has the proper
skill, training and background so as to be able to perform under the terms of this Agreement in a competent and professional manner; (ii) Employee will not infringe any patent, copyright, trademark, trade secret or other proprietary right of
any person; and (iii) Employee will not use any trade secrets or Confidential Information owned by any third party during the term of this Agreement. 

15. ENFORCEMENT. It is the desire and intent of the parties hereto that the provisions of this Agreement will be enforced to the fullest extent
permissible under the laws and public policies applied in each jurisdiction in which enforcement is sought. Accordingly, to the extent that a restriction contained in this Agreement is more restrictive than permitted by the laws of any jurisdiction
whose law may be deemed to govern the review and interpretation of this Agreement, the terms of such restriction, for the purpose only of the operation of such restriction in such jurisdiction, will be the maximum restriction allowed by the laws of
such jurisdiction and such restriction will be deemed to have been revised accordingly herein. A court having jurisdiction over an action arising out of or seeking enforcement of any restriction contained in this Agreement may modify the terms of
such restriction in accordance with this Section 16. 
 16. DISPUTE RESOLUTION. In the event the parties hereto are
unable to settle a dispute between them regarding this Agreement through friendly consultation, such dispute shall be referred to and finally settled by arbitration at the Hong Kong International Arbitration Centre in accordance with the UNCITRAL
Arbitration Rules (the “UNCITRAL Rules”) in effect, which rules are deemed to be incorporated by reference into this Section 17 applying the laws of Hong Kong, without regard to its principles of conflicts
of laws. The arbitration tribunal shall consist of three (3) arbitrators to be appointed according to the UNCITRAL Rules (the “Arbitration Board”). The language of the arbitration shall be English. The Arbitration Board shall
decide any such dispute or claim strictly in accordance with the governing law specified in Section 19.5. Judgment upon any arbitral award rendered hereunder may be entered in any court having jurisdiction, or application
may be made to such court for a judicial acceptance of the award and an order of enforcement, as the case may be. The costs and expenses of the arbitration, including the fees of the Arbitration Board, shall be borne equally by each party to the
dispute or claim, and each party shall pay its own fees, disbursements and other charges of its counsel; provided that the Arbitration Board shall have the right to allocate the costs and expenses between each party as the Arbitration Board deems
equitable. Any award made by the Arbitration Board shall be final and binding on each of the parties that were parties to the dispute. The parties expressly agree to waive the applicability of any laws and regulations that would otherwise give the
right to appeal the decisions of the Arbitration Board so that there shall be no appeal to any court of law for the award of the Arbitration Board, and a party shall not challenge or resist the enforcement action taken by any other party in whose
favor an award of the Arbitration Board was given. 

  
 -10- 

 17. COVENANT AGAINST ASSIGNMENT. Employee may not assign any rights or delegate any of the duties
of Employee under this Agreement. As used in this provision, “assignment” and “delegation” shall mean any sale, gift, pledge, hypothecation, encumbrance, or other transfer of all or any portion of the rights, obligations, or
liabilities in or arising from this Agreement to any person or entity, whether by operation of law or otherwise, and regardless of the legal form of the transaction in which the attempted transfer occurs. 

18. MISCELLANEOUS. 
 18.1. Notices.
Any notice, request, demand or other communication required or permitted to be given to a party pursuant to the provisions of this Agreement will be in writing and will be effective and deemed given under this Agreement on the earliest of:
(i) the date of personal delivery, (ii) the date of transmission by facsimile or e-mail, with confirmed transmission and receipt, (in) two (2) days after deposit with a nationally-recognized
courier or overnight service such as Federal Express, DHL, or (iv) five (5) days after mailing via certified mail, return receipt requested. All notices not delivered personally or by facsimile will be sent with postage and other charges
prepaid and properly addressed to the party to be notified at the address set forth on the signature pages hereto. 
 18.2. Gender;
Time. The parties agree that any use of words in any gender in this Agreement shall also refer to the masculine, feminine or neuter gender, as the case may require. Time is of the essence in performance of the rights and obligations under this
Agreement. 
 18.3. Survival. The provisions set forth in Sections 8, 16, 17, 19.3, 19.5 and
19.9 of this Agreement shall survive the termination of this Agreement. 
 18.4. Binding Agreement; Benefit. The provisions of
this Agreement will be binding upon and will inure to the benefit of, the respective heirs, legal representatives and successors of the parties hereto. 

18.5. Governing Law. This Agreement will be governed by, and construed and enforced in accordance with, the laws of Hong Kong, without
giving effect to its principles or rules of conflict laws to the extent such principles or rules would require or permit the application of the laws of another jurisdiction. 

18.6. Waiver of Breach. The waiver by either party of a breach of any provision of this Agreement by the other party must be in writing
and will not operate or be construed as a waiver of any subsequent breach by such other party. 
 18.7. Entire Agreement; Amendments.
This Agreement contains the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior agreements or understanding among the parties with respect thereto. This Agreement may be amended only by an
agreement in writing signed by each of the parties hereto. 

  
 -11- 

 18.8. Headings. The Section headings contained in this Agreement are for reference
purposes only and will not affect in any way the meaning or interpretation of this Agreement. 
 18.9. Severability. Subject to the
provisions of Section 16 above, any provision of this Agreement that is prohibited or unenforceable in any jurisdiction will, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability
without invalidating the remaining provisions hereof, and any such prohibition or unenforceability in any jurisdiction will not invalidate or render unenforceable such provision in any other jurisdiction. 

18.10. Assignment. This Agreement is personal in its nature and the parties hereto shall not, without the consent of the other party
hereto, assign or transfer this Agreement or any rights or obligations hereunder, provided, however, that the rights and obligations of the Company hereunder shall be assignable and delegable in connection with any subsequent merger, consolidation,
sale of all or substantially all of the assets or shares of the Company or similar transaction involving the Company or a successor corporation. 

18.11. Confidentiality. The Employee agrees not to disclose this Agreement or its terms to any person or entity, other than the
Employee’s agents, advisors or representatives, except as consented to by the Company in writing or as may be required by law. 

18.12. Further Assurances. The Employee agrees to execute, acknowledge, seal and deliver such further assurances, documents,
applications, agreements and instruments, and to take such further actions, as the Company may reasonably request in order to accomplish the purposes of this Agreement. 

18.13. Costs. Each of the parties shall pay all costs and expenses incurred or to be incurred by such party in negotiating and
preparing this Agreement and in closing and carrying out the transactions contemplated by this Agreement. 
 18.14. Interpretation of
Agreement. This Agreement has been negotiated at arm’s length between persons knowledgeable in the matters dealt with in this Agreement. In addition, each party has been represented by experienced and knowledgeable legal counsel.
Accordingly, any rule of law, or any legal decision that would require interpretation of any ambiguities in this Agreement against the party that has drafted it, is of no application and is waived. 

18.15. Counterparts. The parties may execute this Agreement in any number of counterparts and, as so executed, the counterparts shall
constitute one and the same document. The parties agree that each such counterpart is an original and shall be binding upon all of the parties, even though all of the parties are not signatories to the same counterpart. 

18.16. Merger of Prior Agreements and Understandings. This Agreement and the Proprietary Rights Agreement contains the entire
understanding among the parties, supersedes any prior or contemporaneous written or oral agreements, understandings and representations between the parties respecting the subject matter contained in this Agreement, and merges all prior negotiations
concerning such subject matter into this Agreement. The parties agree that there are no representations, agreements, arrangements or understandings, oral or written, between the parties relating to the subject matter of this Agreement which are not
fully expressed in this Agreement. 

  
 -12- 

 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK] 

  
 -13- 

 IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first above written.

  

							
	COMPANY	 		  	EMPLOYEE:
			
	ZAI Lab (HK) Limited, a Hong Kong corporation	 		  	
				
	By:	 	 /s/ Ying Du
	 		  	 /s/ Qi Liu

	Print Name: Ying Du	 		  	QI LIU
			
	Address:	 		  	Address:
			
	 1000 Zhangheng Road, Bldg. 65

Pudong New Area, Shanghai, China
 Attention: Chief Executive
Officer
 Facsimile:
	 		  	
E-Mail:           
                                         
                                         
 

	E-mail:	 	  
	 		  	

 Signature Page of Employment Agreement 

 EXHIBIT A 

AGREEMENT REGARDING CONFIDENTIALITY, TRADE SECRETS, INTELLECTUAL 

PROPERTY AND COMPETITIVE ACTIVITIES 

COMPLIANCE AGREEMENT 

THIS AGREEMENT REGARDING CONFIDENTIALITY, TRADE SECRETS, INTELLECTUAL PROPERTY, AND COMPETITIVE ACTIVITIES (this “Agreement”)
is entered into as of the Effective Date set forth on the signature page hereof between Zai Lab (Hong Kong) Limited, a limited company organized under the laws of Hong Kong (“Company”), and the undersigned employee of Company
(“I,” “me,” or “Employee”). Company, along with its Affiliates now has and expects to develop confidential and proprietary materials and highly sensitive information of immeasurable value which I
recognize must be carefully protected for Company to be successful. To induce Company to employ me and in consideration of my employment by Company, the sufficiency of which I expressly acknowledge, Company and I hereby agree, intending to be
legally bound, as follows: 
 For the purposes of this Agreement, the term “Affiliates” means, with respect to any specified
person, any other person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified person. For the purposes of this definition, “control” when used with respect to any specified
person means the power to direct the management and policies of such person, directly or indirectly, whether through ownership of voting securities, by contract or otherwise; and the terms “controlling” and “controlled” have
meanings correlative to the foregoing. 
 1. Company Confidential Materials and Information. 

(a) Confidential Information. The following materials and information, whether having existed, now existing, or to be developed or
created during the term of my employment by Company (herein referred to collectively as the “Confidential Information”) are covered by this Agreement: 

(1) All information relating to existing or proposed products or services based on proprietary technology of Company or any of its Affiliates,
whether owned or licensed by Company and/or its Affiliates, and proprietary technology in various stages of research and development which are not generally known to the public (such as inventions, trade secrets,
know-how, design specifications, methodologies, procedures, techniques, and information management processes); 

(2) All information relating to the products or services of Company or any of its Affiliates, whether existing or in various stages of
research and development, which is not generally known to the public (such as know-how, specifications, technical or medical data, processes, techniques, methodologies, and strategies); 

(3) All information not generally known to the public concerning or relating to the way Company or any of its Affiliates conducts its business
(such as internal business procedures, controls, plans, licensing techniques, contracts and practices, supplier, subcontractor and prime contractor names and contracts and other vendor information, computer system passwords and other computer
security controls, financial information, distributor information, information supplied by clients and customers of Company or any of its Affiliates, and employee data); 

(4) All information not generally known to the public that pertains to Company’s or any of its Affiliates’ marketing plans and
strategies; forecasts and projections; marketing practices, procedures and policies; discounts; margins; costs; credit terms; pricing practices, procedures and policies; procedures and policies; and customer data including customer lists,
information, contracts, representatives, requirements and needs, specifications, preferences, data provided by or about prospective, existing or past customers and contract terms applicable to such customers (such as customer lists, print-outs,
databases, marketing plans, marketing reports, strategic business plans, marketing analyses and management reports, and listings of potential customers and leads); 

 (5) Any information pertaining to Company or any of its Affiliates in addition to the foregoing
which is not generally known to the public or within the industry or trade areas in which Company or any of its Affiliates competes which gives Company or any of its Affiliates any advantage over its competitors; and 

(6) All physical embodiments of the foregoing information in any tangible form, whether written, electronic, or machine-readable in nature.

 (b) General Knowledge. The general skills, knowledge, and experience gained during my employment with Company or information
publicly available is not considered Confidential Information. Also, upon termination of my employment with Company for any reason, I shall not, subject to the provisions of Sections 3(a) and 3(b) below, be restricted from working with
a person or entity which has independently developed information or materials similar to Confidential Information as long as I comply with my continuing obligations under this Agreement. 

(c) Employee Obligations. During my employment with Company, I acknowledge and agree that I will have access to Confidential Information
and materials and will occupy a position of trust and confidence with respect to Company’s affairs and business. I agree to take the following steps to preserve the confidential and proprietary nature of Confidential Information and materials.

 (1) Non-Use; Non-Disclosure. During and after my
employment with Company regardless of the reason why my employment ended, I will not use, disclose, or transfer any Confidential Information other than as authorized by Company within the scope of my duties with Company, and will not use in any way
other than in Company’s business any Confidential Information, including information or material received by Company from others and intended by Company to be kept in confidence by its recipients. I understand that I am not allowed to sell,
license, or otherwise exploit any products or services which embody or otherwise exploit in whole or in part any Confidential Information or materials. 

(2) Disclosure Prevention. I will take all reasonable precautions to prevent the inadvertent or accidental disclosure of Confidential
Information. 
 (3) Removal of Confidential Information. I will not remove any Confidential Information or documents, materials, or
property containing Confidential Information from Company’s or any of its Affiliates’ premises or make copies of such documents, materials, or property except for use in Company’s business and in accordance with Company’s
policies regarding security of confidential information. 
 (4) Return All Materials. I will return to Company all Confidential
Information and all other documents, materials, and property of Company (including any copies of the foregoing) at any time upon the request of Company, and in any event and without such request, immediately upon the termination of my employment
with Company regardless of the reason for termination. I agree not to retain any documents, materials, or property (including copies) containing any Confidential Information or otherwise belonging to Company after my employment ends, regardless of
the reason. I agree to deliver and sign the “Termination Certificate” attached hereto as Exhibit A. 

  
 2 

 (5) Computer Security. During my employment with Company, I agree to use only those
Company computer resources (both on and off Company’s premises) for which I have been granted access and then only to the extent authorized. I agree to comply with Company’s policies and procedures concerning computer security. 

(6) Communications Systems. I understand that Company maintains an electronic mail system, a voice mail system, a computer network that
includes access to the Internet, and related facilities for the purpose of business communications. I acknowledge that these systems, network, and related facilities, as well as all electronic or voice communications and all data or materials
transmitted thereon, are Company property, and Company retains the right to review any and all electronic mail communications, voice communications, internet sites accessed, and data and materials stored or transmitted, with or without notice, at
any time. 
 2. Proprietary Information and Ideas and Inventions. 

(a) Prior Information. I agree to inform Company of any apparent conflicts between my work for Company and any pre-existing obligations I may have to preserve the confidentiality of another’s proprietary information or materials. Otherwise, by signing this Agreement and accepting employment with Company, Company may
conclude that no such conflict exists, and I agree thereafter to make no such claim against Company. I agree not to disclose to Company or any of its Affiliates or use in Company’s business any information or material relating to the business
of any third person and intended by that person not to be disclosed to Company or its Affiliates. 
 (b) Ideas and Inventions.
Attached hereto as Exhibit B is a list describing all inventions, original works of authorship, developments, improvements, and trade secrets which were made by me prior to employment with Company, which belong to me or a former employer,
which relate to Company’s business, and which are not assigned to Company hereunder (collectively referred to as “Prior Inventions”); or, if no such list is attached, I represent that there are no such Prior Inventions. If in
the course of employment with Company, I incorporate any invention, improvement, development, concept, discovery, product, copyrightable material, trade or other proprietary information owned by me or in which 1 have an interest, into any product,
service, process, composition, machine, or other property (including Confidential Information) of Company, Company is hereby granted and shall have a nonexclusive, royalty-free, irrevocable, perpetual, worldwide license to make, modify, use, and
sell such item as part of or in connection with such product, service, process, composition, or machine, or other property. 
 (c)
Disclosure and Assignment to Company. I agree to promptly make full written disclosure to Company and will hold in trust for the sole right and benefit of Company or its designee, all right, title, and interest in and to any and all
inventions, developments, concepts, improvements, or trade secrets, whether or not patentable or registrable under copyright or similar laws, which I may solely or jointly conceive or develop or reduce to practice, or cause to be conceived or
developed or reduced to practice while I am performing services within the scope of my employment with Company (either on Company’s premises or elsewhere) or utilizing Company facilities (collectively referred to as
“Inventions”), and I hereby forever irrevocably transfer and assign to Company, or its designee, all right, title, and interest in and to all such Inventions. This Section 2(c) shall not apply to
assign to Company any of my rights in any invention that I develop entirely on my own time without using Company’s equipment, supplies, facilities, or trade secret information, except for inventions that either (1) relate, at the time that
the invention is conceived or reduced to practice, to Company’s business or to actual or demonstrably anticipated research or development activities of Company; or (2) result from any work performed by me for Company. 

  
 3 

 (d) Works of Authorship. I acknowledge and agree that all writings or works of authorship,
including without limitation, business planning documents, marketing materials, operations manuals, software program code, drawings, procedural diagrams, and other documentation of any kind produced by me in the course of my work for Company are
works produced for hire and the property of Company, including without limitation any copyrights on those writings; but to the extent any such writing produced by me in the course of my work for Company may not, by operation of law or otherwise, be
a work made for hire, I hereby forever irrevocably transfer and assign to Company the ownership of copyright in such works, whether published or unpublished. 

(e) Moral Rights. I understand that the term “moral rights” means any rights of paternity or integrity, including any right to
claim authorship of a copyrightable work, to object to a modification of such copyrightable work, and any similar right existing under the judicial or statutory law of any country in the world or under any treaty, regardless of whether or not such
right is denominated or generally referred to as a “moral right.” I forever hereby waive and agree never to assert any moral rights I may have in any copyrightable work that is assigned to Company as a result of
Section 2(d) hereof, even after any termination of my employment with Company. 
 (f) Patent and Copyright
Registrations. I agree to assist Company, or its designee, at Company’s expense, in every proper way to secure Company’s rights in the Inventions and any copyrights, patents, mask work rights, or other intellectual property rights
relating thereto in any and all countries, including the disclosure to Company of all pertinent information and data with respect thereto, the execution of all applications, specifications, oaths, assignments, and all other instruments which Company
shall deem necessary in order to apply for and obtain such rights and in order to assign and convey to Company, its successors, assigns, and nominees the sole and exclusive rights, title, and interest in and to such Inventions, and any copyrights,
patents, mask work rights, or other intellectual property rights relating thereto. I further agree that my obligation to execute or cause to be executed, when it is in my power to do so, any such instrument or papers shall continue after the
termination of this Agreement. If Company is unable because of my mental or physical incapacity or for any other reason to secure my signature to apply for or to pursue any application for any United States or foreign patents or copyright
registrations covering Inventions or original works of authorship assigned to Company as above, then I hereby irrevocably designate and appoint Company and its duly authorized officers and agents as my agent and attorney in fact, to act for and on
my behalf and to execute and file any such applications and to do all other lawfully permitted acts to further the prosecution and issuance of letters, patent or copyright registrations thereon with the same legal force and effect as if executed by
me. 
 3. Non-Competition and Non-Solicitation. 

I hereby agree to comply with the restrictions set forth in this Section 3. 

(a) Non-Competition. 

(1) I hereby covenant and agree that I shall not engage in competition with the business that Company or any of its Affiliates conducts or
conducted at any time during my employment or which Company or any of its Affiliates is actively engaged in planning to conduct at the time of my termination of employment (collectively, the “Business”). As indicated above in
Section 1(c)(1), at any time after the termination of this Agreement, I will not make use of Company’s Confidential Information or information concerning any Invention, or any other confidential matter relating to
Company’s business that I may in any way acquire by reason of my employment with Company. 
 (2) During my employment and for a period
of two (2) years immediately following the termination of my employment with Company for any reason, I will not, directly or indirectly, whether as owner, partner, investor, consultant, agent, employee, co-venturer or otherwise, 

  
 4 

 
compete with the Business within any country in which Company or its Affiliates conducts or, at the time of my employment, is actively engaged in planning to conduct Business. The foregoing,
however, shall not prevent my passive ownership of two percent (2%) or less of the equity securities of any publicly traded company. 
 (b)
Non-Solicitation. Both during my employment and for two (2) years immediately following the termination of my employment with Company for any reason, I will not, on behalf of myself or any other
person, except as authorized by Company within the scope of my duties with Company: (i) solicit, recruit, or encourage any of Company’s or its Affiliates’ employees to leave or terminate their employment with Company or such
Affiliate; (ii) hire or employ any of Company’s or its Affiliates’ employees (or any person who was an employee of Company or any of its Affiliates within six (6) months of such action); or (iii) induce any customer or
prospective customer (with respect to which I played a role in soliciting or providing goods or services during the twelve (12) month period prior to the termination of my employment), supplier, vendor, licensee, independent contractor or other
business relation of Company or any of its Affiliates to cease doing business with Company or any of its Affiliates, or to modify its business relationship with Company or any of its Affiliates in a manner adverse to Company or any of its
Affiliates. 
 4. General Provisions. 

(a) Enforcement. I acknowledge that the obligations in this Agreement have unique, very substantial and immeasurable value to Company
and its Affiliates, that Company and its Affiliates are engaged in a highly competitive industry, that I am receiving significant consideration in connection with this Agreement and my employment with Company, and that I have sufficient assets and
skills to provide a livelihood for myself while such covenants remain in force. In the event that any of the obligations in this Agreement shall be determined by any court of competent jurisdiction to be unenforceable by reason of their extending
for too great a period of time or over too great a geographical area or by reason of their being too extensive in any other respect, such obligation shall be interpreted and modified to extend only over the maximum period of time for which it may be
enforceable and over the maximum geographical area as to which it may be enforceable and to the maximum extent in all other respects as to which it may be enforceable, all as determined by such court in such action. If modification of such
obligations is not possible, then the court shall sever such obligations and enforce each and every remaining obligation in this Agreement. 

(b) Governing Law. This Agreement will be governed by, and construed and enforced in accordance with, the laws of Hong Kong without
giving effect to its principles or rules of conflict laws to the extent such principles or rules would require or permit the application of the laws of another jurisdiction. 

(c) Dispute Resolution. 

(1) Any dispute or claim arising out of or in connection with or relating to this Agreement, or the breach, termination or invalidity hereof
(including the validity, scope and enforceability of this arbitration provision), shall be finally resolved by arbitration in Hong Kong under the auspices of the Hong Kong International Arbitration Centre (the “Arbitration
Center”) and in accordance with the Hong Kong International Arbitration Centre Procedures for the Administration of International Arbitration (“Arbitration Rules”) as are in force at the date of this Agreement
and as may be amended by the rest of this Section 4(c). For the purpose of such arbitration, there shall be three (3) arbitrators (“Arbitration Board”). The claimant or claimants (collectively)
shall select one (1) arbitrator and the respondent or respondents (collectively) shall select one (1) arbitrator. All selections shall be made within thirty (30) days after the selecting party gives or receives the demand for
arbitration. Such 

  
 5 

 
arbitrators shall be freely selected, and the parties shall not be limited in their selection to any prescribed list. The Chairman of the Arbitration Center shall select the third arbitrator. If
any arbitrator to be appointed by a party as not been appointed and consented to participate within thirty (30) days after the selection of the first arbitrator, the relevant appointment shall be made by the Chairman of the Arbitration Center.

 (2) All arbitration proceedings shall be conducted in English. The Arbitration Board shall decide any such dispute or claim strictly in
accordance with the governing law specified in Section 4(b). Judgment upon any arbitral award rendered hereunder may be entered in any court having jurisdiction, or application may be made to such court for a judicial
acceptance of the award and an order of enforcement, as the case may be. 
 (3) In order to preserve its rights and remedies, any party
shall be entitled to seek preservation of property in accordance with applicable law from any court of competent jurisdiction or from the arbitration tribunal pending the final decision or award of the arbitration tribunal. 

(4) The parties agree to facilitate the arbitration by (a) cooperating in good faith to expedite (to the maximum extent practicable) the
conduct of the arbitration, (b) making available to one another and to the Arbitration Board for inspection and extraction all documents, books, records, and personnel under their control or under the control of a person controlling or
controlled by such party if determined by the Arbitration Board to be relevant to the dispute, (c) conducting arbitration hearings to the greater extent possible on successive business days and (d) using their best efforts to observe the
time periods established by the Arbitration Rules or by the Arbitration Board for the submission of evidence and briefs. 
 (5) The costs
and expenses of the arbitration, including the fees of the Arbitration Board, shall be borne equally by each party to the dispute or claim, and each party shall pay its own fees, disbursements and other charges of its counsel; provided that
the Arbitration Board shall have the right to allocate the costs and expenses between each party as the Arbitration Board deems equitable. 

(6) Any award made by the Arbitration Board shall be final and binding on each of the parties that were parties to the dispute. The parties
expressly agree to waive the applicability of any laws and regulations that would otherwise give the right to appeal the decisions of the Arbitration Board so that there shall be no appeal to any court of law for the award of the Arbitration Board,
and a party shall not challenge or resist the enforcement action taken by any other party in whose favor an award of the Arbitration Board was given. 

(d) Publications. I agree not to submit any writing for publication or deliver any speech that contains any information relating to the
Business, unless I receive advance written clearance from an authorized representative of Company. 
 (e) Publiclity. I hereby grant
to Company the right to use my name and likeness, without additional consideration, on, in, and in connection with technical, marketing, and/or disclosure materials published by or for Company. 

(f) Miscellaneous. This Agreement is my entire agreement with Company with respect to the subject matter referred to herein, superseding
any prior oral, written, express, or implied negotiations and agreements. This Agreement may not be changed in any respect except by a written agreement signed by both myself and an officer of Company. If any provision of this Agreement is held to
be invalid, illegal, or unenforceable for any reason, the validity, legality, and enforceability of the remaining provisions wi! I not in any way be affected or impaired thereby. 

[Signature Page to Follow] 

  
 6 

 By my signature below, I acknowledge that I have reviewed this Agreement Regarding
Confidentiality, Trade Secrets, Intellectual Property, and Competitive Activities carefully and understand that the covenants and obligations it contains are binding on me. 

 

	
	 /s/ Qi Liu

	(Signature)
	
	 Qi Liu

	(Print Name)

  

			
	Accepted and agreed to on behalf of Zai Lab (Hong Kong) Limited
		
	By:	 	 /s/ Ying Du

	Name: Ying Du
	Title: CEO
	Effective Date: November 1, 2015

 [Signature Page to Compliance Agreement] 

 EXHIBIT A 

TERMINATION CERTIFICATE 
 This is
to certify that I do not have in my possession, and that I have returned to Zai Lab (Hong Kong) Limited (“Company”) in compliance with Section 1(c)(4) of the Agreement Regarding Confidentiality, Trade
Secrets, Intellectual Property and Competitive Activities between me and Company (the “Compliance Agreement”), all Confidential Information (as that term in defined in Section 1 of the Compliance Agreement)
of Company and all other documents, materials, and property of Company (including any copies of the foregoing). 
 I further certify that I
have complied with all the terms of the Compliance Agreement signed by me, including the reporting of any inventions and original works of authorship (as defined therein), conceived or made by me (solely or jointly with others) covered by the
Compliance Agreement. Except to the extent set forth below, I acknowledge and agree that I have no prior inventions or original works of authorship other than those, if any, identified by me on Exhibit B to the Compliance Agreement at the
time that I signed the Compliance Agreement. 
  

	
	 Termination
Date:                                

  

	
	  
 (Signature)

	
	
	  
 (Print Name)

  
 A-1 

 EXHIBIT B 

LIST OF PRIOR INVENTIONS 
 AND
ORIGINAL WORKS OF AUTHORSHIP 
  

					
	 Title
	  	 Date
	  	 Identifying Number

or Brief Description

___ No inventions or improvements 
 ___ Additional Sheets
Attached 
  

	
	 Signature of
Employee:                                       
 
  

	 Print Name of
Employee:                                    

 

	 Date:
                                    

  
 B-1

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