Document:

EX-10.13

 Exhibit 10.13 

EMPLOYMENT AGREEMENT 

THIS EMPLOYMENT AGREEMENT (this “Agreement”) is entered into by and between Zeno Management, Inc., a Delaware
corporation (the “Company”) and a wholly owned subsidiary of Zeno Pharma, LLC (the “Parent”), and Robert E. Winkler, M.D. (“Executive”), and shall be effective as of
February 1, 2019 (the “Effective Date”). 
 WHEREAS, the Company desires to continue to employ Executive, and
Executive desires to continue employment with the Company, on the terms and conditions set forth in this Agreement. 
 NOW, THEREFORE, in
consideration of the mutual promises herein contained, the parties agree as follows: 
 1.    Definitions. As
used in this Agreement, the following terms shall have the following meanings: 
 (a) “Board” means the Board of
Directors of the Company. 
 (b) “Cause” means any of the following: 

(i)    Executive’s unauthorized use or disclosure of confidential information or trade secrets of the Company or its
affiliates or any material breach of a written agreement between Executive and the Company or any affiliate, including without limitation a material breach of any employment, confidentiality, non-compete, non-solicit or similar agreement; 
 (ii)    Executive’s commission of,
indictment for or the entry of a plea of guilty or nolo contendere by Executive to, a felony under the laws of the United States or any state thereof or any crime involving dishonesty or moral turpitude (or any similar crime in any
jurisdiction outside the United States); 
 (iii)    Executive’s gross negligence or willful misconduct or
Executive’s willful or repeated failure or refusal to substantially perform assigned duties; 
 (iv)    any act of
fraud, embezzlement, material misappropriation or dishonesty committed by Executive against the Company or its affiliates; or 

(v)    any acts, omissions or statements by Executive which the Company reasonably determines to be materially
detrimental or damaging to the reputation, operations, prospects or business relations of the Company or its affiliates; 
 provided, however,
that prior to the determination that “Cause” under clauses (i), (iii), (iv) or (v) of this Section 1(b) has occurred, the Company shall (A) provide to Executive in writing, in reasonable detail, the reasons for the
determination that such “Cause” exists, (B) afford Executive a reasonable opportunity to remedy any such breach, (C) provide Executive an opportunity to be heard prior to the final decision to terminate Executive’s
employment hereunder for such “Cause” and (D) make any decision that such “Cause” exists in good faith. 

 The foregoing definition shall not in any way preclude or restrict the right of the Company
or any successor or affiliate thereof to discharge or dismiss Executive for any other acts or omissions, but such other acts or omissions shall not be deemed, for purposes of this Agreement, to constitute grounds for termination for Cause. 

(c)    “Change in Control” shall have the meaning ascribed to such term in the Zeno Pharma, LLC
2017 Profits Interest Plan. 
 (d)    “Code” means the Internal Revenue Code of 1986, as amended
from time to time, and the Treasury Regulations and other interpretive guidance issued thereunder. 

(e)    “Good Reason” means the occurrence of any of the following events or conditions without
Executive’s written consent: 
 (i)    a change in Executive’s position or responsibilities that represents a
substantial reduction in his position or responsibilities as in effect immediately prior thereto; the assignment to Executive of any duties or responsibilities that are materially inconsistent with such position or responsibilities; or any removal
of Executive from or failure to reappoint or reelect Executive to any of such positions, except in connection with the termination of Executive’s services for Cause, as a result of his Permanent Disability or death, or by Executive other than
for Good Reason; provided, however, that neither a change in Executive’s reporting relationship as a result of a Change in Control nor the fact that Executive’s reporting relationship is altered following a Change in Control
because the Company or its successor is a wholly-owned subsidiary of another entity following such Change in Control shall alone constitute Good Reason; 

(ii)    a material reduction in Executive’s annual base salary; 

(iii)    the Company requiring Executive (without Executive’s consent) to be based at any place outside a ten
(10)-mile radius of his then-current place of employment with the Company prior to any such relocation, except for reasonably required travel on the Company’s business; or 

(iv)    any material breach by the Company or any affiliate of its obligations to Executive under any applicable
employment or services agreement between Executive and the Company or such affiliate. 
 Executive must provide written notice to the
Company of the occurrence of any of the foregoing events or conditions without Executive’s written consent within sixty (60) days of the occurrence of such event. The Company or any successor or affiliate shall have a period of thirty
(30) days to cure such event or condition after receipt of written notice of such event from Executive. Executive’s Separation from Service by reason of resignation from employment with the Company for Good Reason must occurs within thirty
(30) days following the expiration of the foregoing thirty (30) day cure period. 

  
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 (f)    “Involuntary Termination” means
(i) Executive’s Separation from Service by reason of Executive’s discharge by the Company other than for Cause, or (ii) Executive’s Separation from Service by reason of Executive’s resignation of employment with the
Company for Good Reason. Executive’s Separation from Service by reason of Executive’s death or discharge by the Company following Executive’s Permanent Disability shall not constitute an Involuntary Termination. 

(g)    Executive’s “Permanent Disability” shall be deemed to have occurred if Executive shall
become physically or mentally incapacitated or disabled or otherwise unable fully to discharge his duties hereunder for a period of ninety (90) consecutive calendar days or for one hundred twenty (120) calendar days in any one hundred
eighty (180) calendar-day period. The existence of Executive’s Permanent Disability shall be determined by the Company on the advice of a physician chosen by the Company and the Company reserves the
right to have Executive examined by a physician chosen by the Company at the Company’s expense. 

(h)    “Separation from Service,” with respect to Executive, means Executive’s
“separation from service,” as defined in Treasury Regulation Section 1.409A-1(h). 

2.    Services to Be Rendered. 

(a)    Duties and Responsibilities. Executive shall serve as Chief Medical Officer of the Company. In the
performance of such duties, Executive shall report directly to, and shall be subject to the direction of, the Chief Executive Officer of the Company (the “CEO”) and to such limits upon Executive’s authority as the
CEO may from time to time impose. In the event of the CEO’s unavailability or incapacity, Executive shall report directly to the Board. Executive hereby consents to serve as an officer and/or director of the Company, Parent or any
subsidiary or affiliate thereof without any additional salary or compensation, if so requested by the Board or the CEO. Executive shall be employed by the Company on a full time basis. Executive’s primary place of work shall be the
Company’s offices in New York, New York. Executive will also be expected to travel to the Company’s locations as needed in connection with his duties. Executive shall be subject to and comply with the policies and procedures generally
applicable to senior executives of the Company to the extent the same are not inconsistent with any term of this Agreement. 

(b)    Exclusive Services. Executive shall at all times faithfully, industriously and to the best of his ability,
experience and talent perform all of the duties that may be assigned to Executive hereunder and shall devote substantially all of his productive time and efforts to the performance of such duties. Subject to the terms of the Proprietary Information
and Inventions Agreement referred to in Section 5(b), this shall not preclude Executive from (i) serving on industry, trade, civic, or charitable boards or committees; or (ii) managing personal, family and other investments;
provided that such activities do not interfere with his duties to the Company, as determined in good faith by the CEO or the Board. 

3.    Compensation and Benefits. The Company shall pay or provide, as the case may be, to Executive the
compensation and other benefits and rights set forth in this Section 3. 

  
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 (a)    Base Salary. The Company shall pay to Executive a base
salary of $461,725.16 per year, payable in accordance with the Company’s usual pay practices (and in any event no less frequently than monthly). Executive’s base salary shall be subject to review annually by and at the sole discretion of
the Board or its designee. 
 (b)    Annual Bonus. Executive shall participate in any annual bonus plan that the
Board or its designee may approve for the senior executives of the Company.    In addition to Executive’s base salary, Executive may be eligible to earn, for each fiscal year of the Company ending during the term of
Executive’s employment with the Company, an annual cash performance bonus under the Company’s bonus plan, as approved from time to time by the Board. Executive’s target bonus under any such annual bonus plan shall be forty percent
(40%) of Executive’s base salary actually paid for the year to which such annual bonus relates (the “Target Bonus”). Executive’s actual annual bonus will be determined on the basis of Executive’s and/or the
Company’s or its affiliates’ attainment of financial or other performance criteria established by the Board or its designee in accordance with the terms and conditions of such bonus plan. Except as otherwise provided in this Agreement,
Executive must be employed by the Company on the date of payment of such annual bonus in order to be eligible to receive such annual bonus. Executive hereby acknowledges and agrees that nothing contained herein confers upon Executive any right to an
annual bonus in any year, and that whether the Company pays Executive an annual bonus and the amount of any such annual bonus will be determined by the Company in its sole discretion. 

(c)    Benefits. Executive shall be entitled to participate in benefits under the Company’s benefit plans and
arrangements, including, without limitation, any employee benefit plan or arrangement made available in the future by the Company to its senior executives, subject to and on a basis consistent with the terms, conditions and overall administration of
such plans and arrangements. The Company shall have the right to amend or delete any such benefit plan or arrangement made available by the Company to its senior executives and not otherwise specifically provided for herein. 

(d)    Expenses. The Company shall reimburse Executive for reasonable out-of-pocket business expenses incurred in connection with the performance of his duties hereunder, subject to such policies as the Company may from time to time establish, and Executive furnishing the
Company with evidence in the form of receipts satisfactory to the Company substantiating the claimed expenditures. 

(e)    Paid Time Off. Executive shall be entitled to such periods of paid time off (“PTO”)
each year as provided from time to time under the Company’s PTO policy and as otherwise provided for senior executive officers; provided, however, that Executive shall be entitled to a minimum of twenty (20) days of PTO per
year. 
 (f)    Equity and Other Benefit Plans. Executive shall be entitled to participate in any equity or other
employee benefit plan that is generally available to senior executive officers of the Company. Except as otherwise provided in this Agreement, Executive’s participation in and benefits under any such plan shall be on the terms and subject to
the conditions specified in the governing document of the particular plan. 

  
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 4.     Severance. Executive shall be entitled to receive benefits
upon a Separation from Service only as set forth in this Section 4: 

(a)    At-Will Employment; Termination. The Company and Executive
acknowledge that Executive’s employment is and shall continue to be at-will, as defined under applicable law, and that Executive’s employment with the Company may be terminated by either party at any
time for any or no reason, with or without notice. If Executive’s employment terminates for any reason, Executive shall not be entitled to any payments, benefits, damages, awards or compensation other than as provided in this Agreement.
Executive’s employment under this Agreement shall be terminated immediately on the death of Executive. 

(b)    Severance Upon Involuntary Termination. Subject to Sections 4(d) and 9(o) and Executive’s continued
compliance with Section 5, if Executive’s employment is Involuntarily Terminated, Executive shall be entitled to receive, in lieu of any severance benefits to which Executive may otherwise be entitled under any severance plan or program of
the Company, the benefits provided below: 
 (i)    the Company shall pay to Executive his fully earned but unpaid base
salary, when due, through the date of Executive’s Involuntary Termination at the rate then in effect, accrued and unused PTO, plus all other benefits, if any, under any Company group retirement plan, nonqualified deferred compensation plan,
equity award plan or agreement, health benefits plan or other Company group benefit plan to which Executive may be entitled pursuant to the terms of such plans or agreements at the time of Executive’s Involuntary Termination (the
“Accrued Obligations”); and 
 (ii)    Executive shall be entitled to receive severance pay in
an amount equal to (A) Executive’s monthly base salary as in effect immediately prior to the date of Executive’s Involuntary Termination, multiplied by (B) nine (9), which amount shall be payable in a lump sum sixty
(60) days following Executive’s Involuntary Termination; and 
 (iii)    for the period beginning on the date
of Employee’s Involuntary Termination and ending on the date which is nine (9) full months following the date of Employee’s Involuntary Termination (or, if earlier, (A) the date on which the applicable continuation period under
the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”) expires or (B) the date Employee becomes eligible to receive the equivalent or increased healthcare coverage by means of subsequent
employment or self-employment) (such period, the “COBRA Coverage Period”), if Employee and/or his or her eligible dependents who were covered under the Company’s health insurance plans as of the date of Employee’s Involuntary
Termination elect to have COBRA coverage and are eligible for such coverage, the Company shall pay for or reimburse Employee on a monthly basis for an amount equal to (1) the monthly premium Employee and/or his or her covered dependents, as
applicable, are required to pay for continuation coverage pursuant to COBRA for Employee and/or his or her eligible dependents, as applicable, who were covered under the Company’s health plans as of the date of Employee’s Involuntary
Termination (calculated by reference to the premium as of the date of Employee’s Involuntary Termination) less (2) the amount Employee would have had to pay to receive group health coverage for Employee and/or his or her covered
dependents, as applicable, based on the cost sharing levels in effect on the date of Employee’s Involuntary Termination. If any of the Company’s health benefits 

  
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are self-funded as of the date of Employee’s Involuntary Termination, or if the Company cannot provide the foregoing benefits in a manner that is exempt from Section 409A (as defined
below) or that is otherwise compliant with applicable law (including, without limitation, Section 2716 of the Public Health Service Act), instead of providing the payments or reimbursements as set forth above, the Company shall instead pay to
Employee the foregoing monthly amount as a taxable monthly payment for the COBRA Coverage Period (or any remaining portion thereof). Employee shall be solely responsible for all matters relating to continuation of coverage pursuant to COBRA,
including, without limitation, the election of such coverage and the timely payment of premiums. Employee shall notify the Company immediately if Employee becomes eligible to receive the equivalent or increased healthcare coverage by means of
subsequent employment or self-employment. 
 (c)    Termination for Cause, Voluntary Resignation Without Good Reason,
Death or Termination for Permanent Disability. In the event of Executive’s termination of employment as a result of Executive’s discharge by the Company for Cause, Executive’s resignation without Good Reason, Executive’s
death or Executive’s termination of employment following Executive’s Permanent Disability, the Company shall not have any other or further obligations to Executive under this Agreement (including any financial obligations) except that
Executive shall be entitled to receive the Accrued Obligations. The foregoing shall be in addition to, and not in lieu of, any and all other rights and remedies which may be available to the Company under the circumstances, whether at law or in
equity. 
 (d)    Release. As a condition to Executive’s receipt of any post-termination benefits pursuant
to Section 4(b) above, Executive (or, in the event of Executive’s incapacity as a result of his Permanent Disability, Executive’s legal representative) shall execute and not revoke a general release of all claims in favor of the
Company and its affiliates (the “Release”) in the form attached hereto as Exhibit A. In the event the Release does not become effective within the fifty-five (55) day period following the date of Executive’s
Involuntary Termination, Executive shall not be entitled to the aforesaid payments and benefits. 
 (e)    Exclusive
Remedy. Except as otherwise expressly required by law (e.g., COBRA) or as specifically provided herein, all of Executive’s rights to salary, severance, benefits, bonuses and other amounts hereunder (if any) accruing after the termination of
Executive’s employment shall cease upon such termination. In the event of Executive’s termination of employment with the Company, Executive’s sole remedy shall be to receive the payments and benefits described in this Section 4.
In addition, Executive acknowledges and agrees that he is not entitled to any reimbursement by the Company for any taxes payable by Executive as a result of the payments and benefits received by Executive pursuant to this Section 4, including,
without limitation, any excise tax imposed by Section 4999 of the Code. Any payments made to Executive under this Section 4 shall be inclusive of any amounts or benefits to which Executive may be entitled pursuant to the Worker Adjustment
and Retraining Notification Act, 29 U.S.C. Sections 2101 et seq., and the Department of Labor regulations thereunder, or any similar state statute. 

(f)    No Mitigation. Except as otherwise provided in Section 4(b)(iii) above, Executive shall not be required
to mitigate the amount of any payment provided for in this Section 4 by seeking other employment or otherwise, nor shall the amount of any payment or benefit provided for in this Section 4 be reduced by any compensation earned by Executive
as the result 

  
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of employment by another employer or self-employment or by retirement benefits; provided, however, that loans, advances or other amounts owed by Executive to the Company may be
offset by the Company against amounts payable to Executive under this Section 4. 
 (g)    Return of the
Company’s Property. In the event of Executive’s termination of employment for any reason, the Company shall have the right, at its option, to require Executive to vacate his offices prior to or on the effective date of separation and
to cease all activities on the Company’s behalf. Upon Executive’s termination of employment in any manner, as a condition to Executive’s receipt of any severance benefits described in this Agreement, Executive shall immediately
surrender to the Company all lists, books and records of, or in connection with, the Company’s business, and all other property belonging to the Company, it being distinctly understood that all such lists, books and records, and other
documents, are the property of the Company. Executive shall deliver to the Company a signed statement certifying compliance with this Section 4(g) prior to the receipt of any severance benefits described in this Agreement. 

5.    Certain Covenants. 

(a)    Noncompetition. Except as may otherwise be approved by the Board, during the term of Executive’s
employment, Executive shall not have any ownership interest (of record or beneficial) in, or have any interest as an employee, salesman, consultant, officer or director in, or otherwise aid or assist in any manner, any firm, corporation,
partnership, proprietorship or other business that engages in any county, city or part thereof in the United States and/or any foreign country in a business which competes directly or indirectly (as determined by the Board) with the Company’s
business in such county, city or part thereof, so long as the Company, or any successor in interest of the Company to the business and goodwill of the Company, remains engaged in such business in such county, city or part thereof or continues to
solicit customers or potential customers therein; provided, however, that Executive may own, directly or indirectly, solely as an investment, securities of any entity which are traded on any national securities exchange if Executive
(i) is not a controlling person of, or a member of a group which controls, such entity; or (ii) does not, directly or indirectly, own one percent (1%) or more of any class of securities of any such entity. 

(b)    Confidential Information. Executive and the Company have entered into the Company’s standard
proprietary information and inventions assignment agreement (the “Proprietary Information and Inventions Agreement”). Executive agrees to perform each and every obligation of Executive therein contained. 

(c)    Solicitation of Employees. During the term of Executive’s employment or service and for one
(1) year thereafter (the “Restricted Period”), Executive will not, either directly or through others, solicit or attempt to solicit any employee, independent contractor or consultant of the Company or its affiliates to
terminate his relationship with the Company or its affiliates in order to become an employee, consultant or independent contractor to or for any other person or entity, or otherwise encourage or solicit any employee of the Company or its affiliates
to leave the Company or such affiliates for any reason or to devote less than all of any such employee’s efforts to the affairs of the Company; provided that the foregoing shall not affect any responsibility Executive may have as an employee of
the Company with respect to the bona fide hiring and firing of Company personnel. 

  
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 (d)    Solicitation of Consultants. Executive shall not during
the term of Executive’s employment or service and for the Restricted Period, directly or indirectly, hire, solicit or encourage to cease work with the Company or any of its affiliates any consultant then under contract with the Company or any
of its affiliates. 
 (e)    Nondisparagement. Executive agrees that neither he nor anyone acting by, through,
under or in concert with him shall disparage or otherwise communicate negative statements or opinions about the Company, Parent, or their respective board members, officers, employees or businesses. The Company agrees that neither its Board members
nor officers, nor the board members or officers of Parent, shall disparage or otherwise communicate negative statements or opinions about Executive. Except as may be required by law, neither Executive, nor any member of Executive’s family, nor
anyone else acting by, through, under or in concert with Executive will disclose to any individual or entity (other than Executive’s legal or tax advisors) the terms of this Agreement. 

(f)    Rights and Remedies Upon Breach. If Executive breaches or threatens to commit a breach of any of the
provisions of this Section 5 (the “Restrictive Covenants”), the Company shall have the following rights and remedies, each of which rights and remedies shall be independent of the other and severally enforceable, and all of
which rights and remedies shall be in addition to, and not in lieu of, any other rights and remedies available to the Company under law or in equity: 

(i)    Specific Performance. The right and remedy to have the Restrictive Covenants specifically enforced by any
court having equity jurisdiction, all without the need to post a bond or any other security or to prove any amount of actual damage or that money damages would not provide an adequate remedy, it being acknowledged and agreed that any such breach or
threatened breach will cause irreparable injury to the Company and that money damages will not provide adequate remedy to the Company; and 

(ii)    Accounting and Indemnification. The right and remedy to require Executive (A) to account for and pay
over to the Company all compensation, profits, monies, accruals, increments or other benefits derived or received by Executive or any associated party deriving such benefits as a result of any such breach of the Restrictive Covenants; and
(B) to indemnify the Company against any other losses, damages (including special and consequential damages), costs and expenses, including actual attorneys’ fees and court costs, which may be incurred by them and which result from or
arise out of any such breach or threatened breach of the Restrictive Covenants. 
 (g)    Severability of
Covenants/Blue Pencilling. If any court determines that any of the Restrictive Covenants, or any part thereof, is invalid or unenforceable, the remainder of the Restrictive Covenants shall not thereby be affected and shall be given full effect,
without regard to the invalid portions. If any court determines that any of the Restrictive Covenants, or any part thereof, are unenforceable because of the duration of such provision or the area covered thereby, such court shall have the power to
reduce the duration or area of such provision and, in its reduced form, such provision shall then be enforceable and shall be enforced. Executive hereby waives any and all right to attack the validity of the Restrictive Covenants on the grounds of
the breadth of their geographic scope or the length of their term. 

  
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 (h)    Enforceability in Jurisdictions. The Company and Executive
intend to and do hereby confer jurisdiction to enforce the Restrictive Covenants upon the courts of any jurisdiction within the geographical scope of such covenants. If the courts of any one or more of such jurisdictions hold the Restrictive
Covenants wholly unenforceable by reason of the breadth of such scope or otherwise, it is the intention of the Company and Executive that such determination not bar or in any way affect the right of the Company to the relief provided above in the
courts of any other jurisdiction within the geographical scope of such covenants, as to breaches of such covenants in such other respective jurisdictions, such covenants as they relate to each jurisdiction being, for this purpose, severable into
diverse and independent covenants. 
 (i)    Whistleblower Provision. Nothing herein shall be construed to
prohibit Executive from communicating directly with, cooperating with, or providing information to, any government regulator, including, but not limited to, the U.S. Securities and Exchange Commission, the U.S. Commodity Futures Trading Commission,
or the U.S. Department of Justice. Executive acknowledges that the Company has provided Executive with the following notice of immunity rights in compliance with the requirements of the Defend Trade Secrets Act: (i) Executive shall not be held
criminally or civilly liable under any Federal or State trade secret law for the disclosure of proprietary information that is made in confidence to a Federal, State, or local government official or to an attorney solely for the purpose of reporting
or investigating a suspected violation of law, (ii) Executive shall not be held criminally or civilly liable under any Federal or State trade secret law for the disclosure of proprietary information that is made in a complaint or other document
filed in a lawsuit or other proceeding, if such filing is made under seal and (iii) if Executive files a lawsuit for retaliation by the Company for reporting a suspected violation of law, Executive may disclose the proprietary information to
Executive’s attorney and use the proprietary information in the court proceeding, if Executive files any document containing the proprietary information under seal, and does not disclose the proprietary information, except pursuant to court
order. 
 (j)    Definitions. For purposes of this Section 5, the term “Company”
means not only Zeno Management, Inc., but also Parent as well as any company, partnership or entity which, directly or indirectly, controls, is controlled by or is under common control with Zeno Management, Inc. 

6.    Insurance; Indemnification. 

(a)    Insurance. The Company shall have the right to take out life, health, accident, “key-man” or other insurance covering Executive, in the name of the Company and at the Company’s expense in any amount deemed appropriate by the Company. Executive shall assist the Company in
obtaining such insurance, including, without limitation, submitting to any required examinations and providing information and data required by insurance companies. 

(b)    Indemnification. Executive will be provided with indemnification against third party claims related to his
work for the Company to the extent permitted by Delaware law. The Company shall provide Executive with directors and officers liability insurance coverage at least as favorable as that which the Company may maintain from time to time for other
executive officers. 

  
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 7.    Arbitration. Any dispute, claim or controversy based on,
arising out of or relating to Executive’s employment or this Agreement shall be settled by final and binding arbitration in New York, New York, before a single neutral arbitrator in accordance with the JAMS Employment Arbitration Rules and
Procedures (the “Rules”), and judgment on the award rendered by the arbitrator may be entered in any court having jurisdiction. The Rules may be found online at www.jamsadr.com. If the parties are unable to agree upon an
arbitrator, one shall be appointed by JAMS in accordance with its Rules. Each party shall pay the fees of its own attorneys, the expenses of its witnesses and all other expenses connected with presenting its case; provided, however,
Executive and the Company agree that, to the extent permitted by law, the arbitrator may, in his or her discretion, award reasonable attorneys’ fees to the prevailing party; provided, further, that the prevailing party shall be
reimbursed for such fees, costs and expenses within forty-five (45) days following any such award, but in no event later than the last day of Executive’s taxable year following the taxable year in which the fees, costs and expenses were
incurred; provided, further, that the parties’ obligations pursuant to this sentence shall terminate on the tenth (10th) anniversary of the date of Executive’s termination
of employment. Other costs of the arbitration, including the cost of any record or transcripts of the arbitration, JAMS administrative fees, the fee of the arbitrator, and all other fees and costs, shall be borne by the Company. This Section 7
is intended to be the exclusive method for resolving any and all claims by the parties against each other for payment of damages under this Agreement or relating to Executive’s employment; provided, however, that Executive shall
retain the right to file administrative charges with or seek relief through any government agency of competent jurisdiction, and to participate in any government investigation, including but not limited to (a) claims for workers’
compensation, state disability insurance or unemployment insurance; (b) administrative claims brought before any state or federal governmental authority; provided, however, that any appeal from an award or from denial of an award
of wages and/or waiting time penalties shall be arbitrated pursuant to the terms of this Agreement; and (c) claims for administrative relief from the United States Equal Employment Opportunity Commission and/or any similar state agency in any
applicable jurisdiction); provided, further, that Executive shall not be entitled to obtain any monetary relief through such agencies other than workers’ compensation benefits or unemployment insurance benefits. This Agreement
shall not limit either party’s right to obtain any provisional remedy, including, without limitation, injunctive or similar relief, from any court of competent jurisdiction as may be necessary to protect their rights and interests pending the
outcome of arbitration, including without limitation injunctive relief, in any court of competent jurisdiction. Seeking any such relief shall not be deemed to be a waiver of such party’s right to compel arbitration. Both Executive and the
Company expressly waive their right to a jury trial. 
 8.    General Relationship. Executive shall be considered
an employee of the Company within the meaning of all federal, state and local laws and regulations including, but not limited to, laws and regulations governing unemployment insurance, workers’ compensation, industrial accident, labor and
taxes. 
 9.    Miscellaneous. 

(a)    Modification; Prior Claims. This Agreement and the Proprietary Information and Inventions Agreement (and the
other documents referenced therein) set forth the entire understanding of the parties with respect to the subject matter hereof, and supersede all existing agreements between them concerning such subject matter, including any prior offer letter

  
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between the Company and Executive. This Agreement may be amended or modified only with the written consent of Executive and an authorized representative of the Company. No oral waiver, amendment
or modification will be effective under any circumstances whatsoever. 
 (b)    Assignment; Assumption by
Successor. The rights of the Company under this Agreement may, without the consent of Executive, be assigned by the Company, in its sole and unfettered discretion, to any person, firm, corporation or other business entity which at any time,
whether by purchase, merger or otherwise, directly or indirectly, acquires all or substantially all of the assets or business of the Company. The Company will require any successor (whether direct or indirect, by purchase, merger or otherwise) to
all or substantially all of the business or assets of the Company expressly to assume and to agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession had taken
place; provided, however, that no such assumption shall relieve the Company of its obligations hereunder. As used in this Agreement, the “Company” shall mean the Company as hereinbefore defined and any successor
to its business and/or assets as aforesaid which assumes and agrees to perform this Agreement by operation of law or otherwise. 

(c)    Survival. The covenants, agreements, representations and warranties contained in or made in Sections 4,
5, 6, 7 and 9 of this Agreement shall survive Executive’s termination of employment. 
 (d)    Third-Party Beneficiaries. Except as expressly set forth herein, this Agreement does not create, and shall not be construed as creating, any rights enforceable by any person not a party to this Agreement. 

(e)    Waiver. The failure of either party hereto at any time to enforce performance by the other party of any
provision of this Agreement shall in no way affect such party’s rights thereafter to enforce the same, nor shall the waiver by either party of any breach of any provision hereof be deemed to be a waiver by such party of any other breach of the
same or any other provision hereof. 
 (f)    Section Headings. The headings of the several sections in this
Agreement are inserted solely for the convenience of the parties and are not a part of and are not intended to govern, limit or aid in the construction of any term or provision hereof. 

(g)    Notices. Any notice required or permitted by this Agreement shall be in writing and shall be delivered as
follows with notice deemed given as indicated: (i) by personal delivery when delivered personally; (ii) by overnight courier upon written verification of receipt; (iii) by email, telecopy or facsimile transmission upon acknowledgment
of receipt of electronic transmission; or (iv) by certified or registered mail, return receipt requested, upon verification of receipt. Notice shall be sent to Executive at the address listed on the Company’s personnel records and to the
Company at its principal place of business, or such other address as either party may specify in writing. 

(h)    Severability. All Sections, clauses and covenants contained in this Agreement are severable, and in the
event any of them shall be held to be invalid by any court, this Agreement shall be interpreted as if such invalid Sections, clauses or covenants were not contained herein. 

  
 11 

 (i)    Governing Law and Venue. This Agreement is to be governed
by and construed in accordance with the laws of the State of New York applicable to contracts made and to be performed wholly within such State, and without regard to the conflicts of laws principles thereof. Except as provided in Sections 5
and 7, any suit brought hereon shall be brought in the state or federal courts sitting in New York, New York, the parties hereto hereby waiving any claim or defense that such forum is not convenient or proper. Each party hereby agrees that any such
court shall have in personam jurisdiction over it and consents to service of process in any manner authorized by New York law. 

(j)    Non-transferability of Interest. None of the rights of Executive to
receive any form of compensation payable pursuant to this Agreement shall be assignable or transferable except through a testamentary disposition or by the laws of descent and distribution upon the death of Executive. Any attempted assignment,
transfer, conveyance, or other disposition (other than as aforesaid) of any interest in the rights of Executive to receive any form of compensation to be made by the Company pursuant to this Agreement shall be void. 

(k)    Gender. Where the context so requires, the use of the masculine gender shall include the feminine and/or
neuter genders and the singular shall include the plural, and vice versa, and the word “person” shall include any corporation, firm, partnership or other form of association. 

(l)    Counterparts; Facsimile or .pdf Signatures. This Agreement may be executed in any number of counterparts,
each of which when so executed and delivered will be deemed an original, and all of which together shall constitute one and the same agreement. This Agreement may be executed and delivered by facsimile or by .pdf file and upon such delivery the
facsimile or .pdf signature will be deemed to have the same effect as if the original signature had been delivered to the other party. 

(m)    Construction. The language in all parts of this Agreement shall in all cases be construed simply, according
to its fair meaning, and not strictly for or against any of the parties hereto. Without limitation, there shall be no presumption against any party on the ground that such party was responsible for drafting this Agreement or any part thereof. 

(n)    Withholding and Other Deductions. All compensation payable to Executive hereunder shall be subject to such
deductions as the Company is from time to time required to make pursuant to law, governmental regulation or order. 

(o)    Code Section 409A. 

(i)    This Agreement is not intended to provide for any deferral of compensation subject to Section 409A of the
Code, and, accordingly, the severance payments payable under Section 4(b)(ii) shall be paid no later than the later of: (A) the fifteenth (15th) day of the third month following Executive’s first taxable year in which such amounts are
no longer subject to a substantial risk of forfeiture, and (B) the fifteenth (15th) day of the third month following first taxable year of the Company in which such amounts are is no longer subject to

  
 12 

 
substantial risk of forfeiture, as determined in accordance with Code Section 409A and any Treasury Regulations and other guidance issued thereunder. To the extent applicable, this Agreement
shall be interpreted in accordance with Code Section 409A and Department of Treasury regulations and other interpretive guidance issued thereunder. Each series of installment payments made under this Agreement is hereby designated as a series
of “separate payments” within the meaning of Section 409A of the Code.    For purposes of this Agreement, all references to Executive’s “termination of employment” shall mean Executive’s
Separation from Service. 
 (ii)    If Executive is a “specified employee” (as defined in Section 409A
of the Code), as determined by the Company in accordance with Section 409A of the Code, on the date of Executive’s Separation from Service, to the extent that the payments or benefits under this Agreement are subject to Section 409A
of the Code and the delayed payment or distribution of all or any portion of such amounts to which Executive is entitled under this Agreement is required in order to avoid a prohibited distribution under Section 409A(a)(2)(B)(i) of the Code,
then such portion deferred pursuant to this Section 9(o)(ii) shall be paid or distributed to Executive in a lump sum on the earlier of (A) the date that is six (6)-months following Executive’s Separation from Service, (B) the
date of Executive’s death or (C) the earliest date as is permitted under Section 409A of the Code. Any remaining payments due under the Agreement shall be paid as otherwise provided herein. 

(iii)    To the extent applicable, this Agreement shall be interpreted in accordance with the applicable
exemptions from Section 409A of the Code. If Executive and the Company determine that any payments or benefits payable under this Agreement intended to comply with Sections 409A(a)(2), (3) and (4) of the Code do not comply with
Section 409A of the Code, Executive and the Company agree to amend this Agreement, or take such other actions as Executive and the Company deem reasonably necessary or appropriate, to comply with the requirements of Section 409A of the
Code and the Treasury Regulations thereunder (and any applicable transition relief) while preserving the economic agreement of the parties. To the extent that any provision in this Agreement is ambiguous as to its compliance with Section 409A
of the Code, the provision shall be read in such a manner that no payments payable under this Agreement shall be subject to an “additional tax” as defined in Section 409A(a)(1)(B) of the Code. 

(iv)    Any reimbursement of expenses or in-kind benefits payable under this
Agreement shall be made in accordance with Treasury Regulation Section 1.409A-3(i)(1)(iv) and shall be paid on or before the last day of Executive’s taxable year following the taxable year in which
Executive incurred the expenses. The amount of expenses reimbursed or in-kind benefits payable during any taxable year of Executive’s shall not affect the amount eligible for reimbursement or in-kind benefits payable in any other taxable year of Executive’s, and Executive’s right to reimbursement for such amounts shall not be subject to liquidation or exchange for any other benefit. 

[SIGNATURE PAGE FOLLOWS] 

  
 13 

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

			
	ZENO MANAGEMENT, INC.

 
			
		
	By:	 	 /s/ Anthony Y. Sun, M.D.

	Name:	 	Anthony Y. Sun, M.D.
	Title:	 	President and Chief Executive Officer
	
	  
 EXECUTIVE

	
	  
 /s/ Robert E. Winkler,
M.D.

	Robert E. Winkler, M.D.

  
 SIGNATURE PAGE TO
EMPLOYMENT AGREEMENT 

 EXHIBIT A 

GENERAL RELEASE OF CLAIMS 

[The language in this Release may change based on legal developments and evolving best practices; this form is provided as an example of
what will be included in the final Release document.] 
 This General Release of Claims (“Release”) is entered
into as of this              day of             ,
            , between Robert E. Winkler, M.D. (“Executive”), and Zeno Management, Inc. (the “Company”) (collectively referred to
herein as the “Parties”). 
 WHEREAS, Executive and the Company are parties to that certain Employment Agreement
dated as of February 1, 2019 (the “Agreement”); 
 WHEREAS, the Parties agree that Executive is entitled to
certain severance benefits under the Agreement, subject to Executive’s execution of this Release; and 
 WHEREAS, the Company and
Executive now wish to fully and finally to resolve all matters between them. 
 NOW, THEREFORE, in consideration of, and subject to, the
severance benefits payable to Executive pursuant to the Agreement, the adequacy of which is hereby acknowledged by Executive, and which Executive acknowledges that he would not otherwise be entitled to receive, Executive and the Company hereby agree
as follows: 
 1.    General Release of Claims by Executive. 

(a)    Executive, on behalf of himself and his executors, heirs, administrators, representatives and assigns, hereby
agrees to release and forever discharge the Company and all predecessors, successors and their respective parent corporations, affiliates, related, and/or subsidiary entities, and all of their past and present investors, directors, shareholders,
officers, general or limited partners, employees, attorneys, agents and representatives, and the employee benefit plans in which Executive is or has been a participant by virtue of his employment with or service to the Company (collectively, the
“Company Releasees”), from any and all claims, debts, demands, accounts, judgments, rights, causes of action, equitable relief, damages, costs, charges, complaints, obligations, promises, agreements, controversies, suits,
expenses, compensation, responsibility and liability of every kind and character whatsoever (including attorneys’ fees and costs), whether in law or equity, known or unknown, asserted or unasserted, suspected or unsuspected (collectively,
“Claims”), which Executive has or may have had against such entities based on any events or circumstances arising or occurring on or prior to the date hereof or on or prior to the date hereof, arising directly or indirectly
out of, relating to, or in any other way involving in any manner whatsoever Executive’s employment by or service to the Company or the termination thereof, including any and all claims arising under federal, state, or local laws relating to
employment, including without limitation claims of wrongful discharge, breach of express or implied contract, fraud, misrepresentation, defamation, or liability in tort, and claims of any kind 

  
 1 

 
that may be brought in any court or administrative agency including, without limitation, claims under Title VII of the Civil Rights Act of 1964, as amended, 42 U.S.C. Section 2000, et
seq.; the Americans with Disabilities Act, as amended, 42 U.S.C. § 12101 et seq.; the Rehabilitation Act of 1973, as amended, 29 U.S.C. § 701 et seq.; the Civil Rights Act of 1866, and
the Civil Rights Act of 1991; 42 U.S.C. Section 1981, et seq.; the Age Discrimination in Employment Act, as amended, 29 U.S.C. Section 621, et seq. (the “ADEA”); the Equal Pay Act, as
amended, 29 U.S.C. Section 206(d); regulations of the Office of Federal Contract Compliance, 41 C.F.R. Section 60, et seq.; the Family and Medical Leave Act, as amended, 29 U.S.C. § 2601
et seq.; the Fair Labor Standards Act of 1938, as amended, 29 U.S.C. § 201 et seq.; the Employee Retirement Income Security Act, as amended, 29 U.S.C. § 1001 et seq. 

Notwithstanding the generality of the foregoing, Executive does not release the following claims: 

(i)    Claims for unemployment compensation or any state disability insurance benefits pursuant to the
terms of applicable state law; 
 (ii)    Claims for workers’ compensation insurance benefits under
the terms of any worker’s compensation insurance policy or fund of the Company; 
 (iii)    Claims
pursuant to the terms and conditions of the federal law known as COBRA; 
 (iv)    Claims for indemnity
under the bylaws of the Company, as provided for by Delaware law or under any applicable insurance policy with respect to Executive’s liability as an employee, director or officer of the Company; 

(v)    Executive’s right to bring to the attention of the Equal Employment Opportunity Commission or
any other federal, state or local government agency claims of discrimination, or from participating in an investigation or proceeding conducted by the Equal Employment Opportunity Commission or any other federal, state or local government agency;
provided, however, that Executive does release his right to secure any damages for alleged discriminatory treatment; 

(vi)    Claims based on any right Executive may have to enforce the Company’s executory obligations
under the Agreement; 
 (vii)    Claims Executive may have to vested or earned compensation and benefits;
and 
 (viii)    Executive’s right to communicate or cooperate with any government agency. 

(b)    EXECUTIVE ACKNOWLEDGES THAT HE HAS BEEN ADVISED OF AND IS FAMILIAR WITH THE PROVISIONS OF CALIFORNIA CIVIL CODE
SECTION 1542, WHICH PROVIDES AS FOLLOWS: 

  
 2 

 “A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS THAT THE CREDITOR OR RELEASING PARTY
DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT THE TIME OF EXECUTING THE RELEASE AND THAT, IF KNOWN BY HIM OR HER, WOULD HAVE MATERIALLY AFFECTED HIS OR HER SETTLEMENT WITH THE DEBTOR OR RELEASED PARTY.” 

BEING AWARE OF SAID CODE SECTION, EXECUTIVE HEREBY EXPRESSLY WAIVES ANY RIGHTS HE MAY HAVE THEREUNDER, AS WELL AS UNDER ANY OTHER STATUTES OR COMMON LAW
PRINCIPLES OF SIMILAR EFFECT. 
 [Note: Clauses (c), (d) and (e) apply only if Executive is age 40 or older at time of termination] 

(c)    Executive acknowledges that this Release was presented to him on the date indicated above and that Executive is
entitled to have [twenty-one (21)][forty-five (45)] days’ time in which to consider it. Executive further acknowledges that the Company has advised him that he is waiving his rights under the ADEA, and
that Executive should consult with an attorney of his choice before signing this Release, and Executive has had sufficient time to consider the terms of this Release. Executive represents and acknowledges that if Executive executes this Release
before [twenty-one (21)][forty-five (45)] days have elapsed, Executive does so knowingly, voluntarily, and upon the advice and with the approval of Executive’s legal counsel (if any), and that Executive
voluntarily waives any remaining consideration period. 
 (d)    Executive understands that after executing this
Release, Executive has the right to revoke it within seven (7) days after his execution of it. Executive understands that this Release will not become effective and enforceable unless the seven (7) day revocation period passes and
Executive does not revoke the Release in writing. Executive understands that this Release may not be revoked after the seven (7) day revocation period has passed. Executive also understands that any revocation of this Release must be made in
writing and delivered to the Company at its principal place of business within the seven (7) day period. 

(e)    Executive understands that this Release shall become effective, irrevocable, and binding upon Executive on the
eighth (8th) day after his execution of it, so long as Executive has not revoked it within the time period and in the manner specified in clause (d) above. 

(f)    Executive further understands that Executive will not be given any severance benefits under the Agreement unless
this Release is effective on or before the date that is fifty-five (55) days following the date of Executive’s termination of employment. 

2.    No Assignment. Executive represents and warrants to the Company Releasees that there has been no assignment
or other transfer of any interest in any Claim that Executive may have against the Company Releasees. Executive agrees to indemnify and hold harmless the Company Releasees from any liability, claims, demands, damages, costs, expenses and
attorneys’ fees incurred as a result of any such assignment or transfer from Executive. 

3.    Severability. In the event any provision of this Release is found to be unenforceable by an arbitrator or
court of competent jurisdiction, such provision shall be deemed modified to the extent necessary to allow enforceability of the provision as so limited, it being intended that the 

  
 3 

 
parties shall receive the benefit contemplated herein to the fullest extent permitted by law. If a deemed modification is not satisfactory in the judgment of such arbitrator or court, the
unenforceable provision shall be deemed deleted, and the validity and enforceability of the remaining provisions shall not be affected thereby. 

4.    Interpretation; Construction. The headings set forth in this Release are for convenience only and shall not
be used in interpreting this Agreement. This Release has been drafted by legal counsel representing the Company, but Executive has participated in the negotiation of its terms. Furthermore, Executive acknowledges that Executive has had an
opportunity to review and revise the Release and have it reviewed by legal counsel, if desired, and, therefore, the normal rule of construction to the effect that any ambiguities are to be resolved against the drafting party shall not be employed in
the interpretation of this Release. Either party’s failure to enforce any provision of this Release shall not in any way be construed as a waiver of any such provision, or prevent that party thereafter from enforcing each and every other
provision of this Release. 
 5.    Governing Law and Venue. This Release will be governed by and construed in
accordance with the laws of the United States of America and the State of New York applicable to contracts made and to be performed wholly within such State, and without regard to the conflicts of laws principles thereof. Any suit brought hereon
shall be brought in the state or federal courts sitting in New York, New York, the Parties hereby waiving any claim or defense that such forum is not convenient or proper. Each party hereby agrees that any such court shall have in personam
jurisdiction over it and consents to service of process in any manner authorized by New York law. 
 6.    Entire
Agreement. This Release and the Agreement constitute the entire agreement of the Parties in respect of the subject matter contained herein and therein and supersede all prior or simultaneous representations, discussions, negotiations and
agreements, whether written or oral. This Release may be amended or modified only with the written consent of Executive and an authorized representative of the Company. No oral waiver, amendment or modification will be effective under any
circumstances whatsoever. 
 7.    Counterparts. This Release may be executed in multiple counterparts, each of
which shall be deemed to be an original but all of which together shall constitute one and the same instrument. 
 (Signature Page Follows)

  
 4 

 IN WITNESS WHEREOF, and intending to be legally bound, the Parties have executed the
foregoing Release as of the date first written above. 
  

							
	EXECUTIVE	 		 	ZENO MANAGEMENT, INC.
			
	                                      
                                         
                                 	 	        	 	By:                                   
                                         
                                         
         
	Print Name: Robert E. Winkler, M.D.	 		 	  

Print Name:                       
                                         
                                         
       

		 		 	  

Title:EX-10.14

 Exhibit 10.14 

CONSULTING AGREEMENT 

THIS CONSULTING AGREEMENT (this “Agreement”) is entered into by and between Zeno Management, Inc., a Delaware
corporation (the “Company”) and a wholly owned subsidiary of Zeno Pharma, LLC (the “Parent”), and Cam Gallagher (“Consultant”), and shall be effective as of February 1,
2019 (the “Effective Date”). 
 WHEREAS, the Company desires to continue to engage Consultant, and Consultant
desires to provide services to the Company, on the terms and conditions set forth in this Agreement. 
 NOW, THEREFORE, in consideration of
the mutual promises herein contained, the parties agree as follows: 
 1.    Definitions. As used in this
Agreement, the following terms shall have the following meanings: 
 (a) “Board” means the Board of Directors of the
Company. 
 (b) “Cause” means any of the following: 

(i)    Consultant’s unauthorized use or disclosure of confidential information or trade secrets of the Company or
its affiliates or any material breach of a written agreement between Consultant and the Company or any affiliate, including without limitation a material breach of any confidentiality, non-compete, non-solicit or similar agreement; 
 (ii)    Consultant’s commission of,
indictment for or the entry of a plea of guilty or nolo contendere by Consultant to, a felony under the laws of the United States or any state thereof or any crime involving dishonesty or moral turpitude (or any similar crime in any
jurisdiction outside the United States); 
 (iii)    Consultant’s gross negligence or willful misconduct or
Consultant’s willful or repeated failure or refusal to substantially perform his services under this Agreement; 

(iv)    any act of fraud, embezzlement, material misappropriation or dishonesty committed by Consultant against the
Company or its affiliates; or 
 (v)    any acts, omissions or statements by Consultant which the Company reasonably
determines to be materially detrimental or damaging to the reputation, operations, prospects or business relations of the Company or its affiliates; 

provided, however, that prior to the determination that “Cause” under clauses (i), (iii), (iv) or (v) of this Section 1(b)
has occurred, the Company shall (A) provide to Consultant in writing, in reasonable detail, the reasons for the determination that such “Cause” exists, (B) other than with respect to clause (v) above which specifies the
applicable period of time for Consultant to remedy his breach, afford Consultant a reasonable opportunity to remedy any such breach, (C) provide Consultant an opportunity to be heard prior to the final decision to terminate Consultant’s
service hereunder for such “Cause” and (D) make any decision that such “Cause” exists in good faith. 

 The foregoing definition shall not in any way preclude or restrict the right of the Company
or any successor or affiliate thereof to terminate this Agreement or Consultant’s services for any other acts or omissions, but such other acts or omissions shall not be deemed, for purposes of this Agreement, to constitute grounds for
termination for Cause. 
 (c)    “Change in Control” shall have the meaning ascribed to such
term in the Zeno Pharma, LLC 2017 Profits Interest Plan. 
 (d)    “Code” means the Internal
Revenue Code of 1986, as amended from time to time, and the Treasury Regulations and other interpretive guidance issued thereunder. 

(e)    “Good Reason” means the occurrence of any of the following events or conditions without
Consultant’s written consent: 
 (i)    a change in Consultant’s position or responsibilities that represents
a substantial reduction in his position or responsibilities as in effect immediately prior thereto; the assignment to Consultant of any duties or responsibilities that are materially inconsistent with such position or responsibilities; or any
removal of Consultant from or failure to reappoint or reelect Consultant to any of such positions, including Consultant’s position as a member of the Board or the board of directors of Parent, except in connection with the termination of
Consultant’s services for Cause, as a result of his Permanent Disability or death, or by Consultant other than for Good Reason; provided, however, that neither a change in Consultant’s reporting relationship as a result of a
Change in Control nor the fact that Consultant’s reporting relationship is altered following a Change in Control because the Company or its successor is a wholly-owned subsidiary of another entity following such Change in Control shall alone
constitute Good Reason; 
 (ii)    a material reduction in Consultant’s retainer; 

(iii)    the Company requiring Consultant (without Consultant’s consent) to be based at any place outside a fifty (50)-mile radius of his then-current place at which he is providing services to the Company prior to any such relocation, except for reasonably required travel on the Company’s business; or 

(iv)    any material breach by the Company or any affiliate of its obligations to Consultant under any applicable
services agreement between Consultant and the Company or such affiliate. 
 Consultant must provide written notice to the Company of the
occurrence of any of the foregoing events or conditions without Consultant’s written consent within sixty (60) days of the occurrence of such event. The Company or any successor or affiliate shall have a period of thirty (30) days to
cure such event or condition after receipt of written notice of such event from Consultant. Consultant’s Separation from Service by reason of voluntary termination of his services with the Company for Good Reason must occurs within thirty
(30) days following the expiration of the foregoing thirty (30) day cure period. 

(f)    “Involuntary Termination” means (i) Consultant’s Separation from Service by
reason of Consultant’s termination by the Company other than for Cause, or (ii) 

  
 2 

 
Consultant’s Separation from Service by reason of Consultant’s voluntary termination of his services with the Company for Good Reason. Consultant’s Separation from Service by
reason of Consultant’s death or termination by the Company following Consultant’s Permanent Disability shall not constitute an Involuntary Termination. 

(g)    Consultant’s “Permanent Disability” shall be deemed to have occurred if Consultant
shall become physically or mentally incapacitated or disabled or otherwise unable fully to perform his services hereunder for a period of ninety (90) consecutive calendar days or for one hundred twenty (120) calendar days in any one
hundred eighty (180) calendar-day period. The existence of Consultant’s Permanent Disability shall be determined by the Company on the advice of a physician chosen by the Company and the Company
reserves the right to have Consultant examined by a physician chosen by the Company at the Company’s expense. 

(h)    “Separation from Service,” with respect to Consultant, means Consultant’s
“separation from service,” as defined in Treasury Regulation Section 1.409A-1(h). 

2.     Services to Be Rendered. 

(a)    Services. Consultant shall be engaged as a consultant to the Company and will serve as the Executive Director
of the Company. In such capacity, Consultant shall perform all projects agreed upon by the CEO and Consultant related to such role. Consultant shall perform the services at the Company’s offices in San Diego, California, or such other locations
as mutually agreed upon by the CEO and Consultant from time to time. Consultant shall be subject to and comply with the policies and procedures generally applicable to similarly-situated service providers of the Company to the extent the same are
not inconsistent with any term of this Agreement. Consultant will not perform any services for the Company except as authorized or requested by the CEO. 

(b)    Time Commitment. Subject to the terms of this Agreement, Consultant will, to the best of Consultant’s
ability, devote at least fifty percent (50%) of his productive time and efforts to the performance of the services hereunder. Unless otherwise determined by Consultant and the CEO, the manner and means by which Consultant chooses to complete
projects are in Consultant’s sole discretion and control. In performing the services and completing the projects, Consultant will use Consultant’s own equipment, tools and other materials at Consultant’s own expense, unless otherwise
determined by Consultant and the CEO. Consultant may not subcontract or otherwise delegate Consultant’s obligations under this Agreement. Consultant will perform the services, and provide the results thereof, with the highest degree of
professional skill and expertise. 
 3.    Compensation and Benefits. The Company shall pay or provide, as the
case may be, to Consultant the compensation and other benefits and rights set forth in this Section 3. 

(a)    Retainer. The Company shall pay to Consultant an annual retainer of $203,949.84, payable in accordance with
the Company’s usual pay practices (and in any event no less frequently than monthly). Consultant’s retainer shall be subject to review annually by and at the sole discretion of the Board or its designee. 

  
 3 

 (b)    Annual Bonus. Consultant shall participate in any annual
bonus plan that the Board or its designee may approve for similarly-situated service providers of the Company. In addition to Consultant’s base salary, Consultant may be eligible to earn, for each fiscal year of the Company ending during the
term of Consultant’s service with the Company, an annual cash performance bonus under the Company’s bonus plan, as approved from time to time by the Board. Consultant’s target bonus under any such annual bonus plan shall be forty
percent (40%) of Consultant’s base salary actually paid for the year to which such annual bonus relates (the “Target Bonus”). Consultant’s actual annual bonus will be determined on the basis of Consultant’s
and/or the Company’s or its affiliates’ attainment of financial or other performance criteria established by the Board or its designee in accordance with the terms and conditions of such bonus plan. Except as otherwise provided in this
Agreement, Consultant must be providing services to the Company on the date of payment of such annual bonus in order to be eligible to receive such annual bonus. Consultant hereby acknowledges and agrees that nothing contained herein confers upon
Consultant any right to an annual bonus in any year, and that whether the Company pays Consultant an annual bonus and the amount of any such annual bonus will be determined by the Company in its sole discretion. 

(c)    Benefits. Consultant will not be entitled to any of the benefits which the Company may make available to its
employees, such as group insurance, profit-sharing or retirement benefits. 
 (d)    Expenses. The Company shall
reimburse Consultant for reasonable out-of-pocket business expenses incurred in connection with the performance of his services hereunder, subject to such policies as
the Company may from time to time establish, and Consultant furnishing the Company with evidence in the form of receipts satisfactory to the Company substantiating the claimed expenditures. 

(e)    Equity and Other Benefit Plans. Consultant shall be entitled to participate in any equity plan that is
generally available to similarly-situated service providers of the Company. Except as otherwise provided in this Agreement, Consultant’s participation in and benefits under any such plan shall be on the terms and subject to the conditions
specified in the governing document of the particular plan. 
 4.    Termination. Consultant shall be entitled to
receive benefits upon a Separation from Service only as set forth in this Section 4: 
 (a)    Term and
Termination. The Company and Consultant acknowledge that Consultant’s services under this Agreement may be terminated by either party at any time for any or no reason, with or without notice. If Consultant’s service terminates for any
reason, Consultant shall not be entitled to any payments, benefits, damages, awards or compensation other than as provided in this Agreement. Consultant’s service under this Agreement shall be terminated immediately on the death of Consultant.

  
 4 

 (b)    Termination Payments Upon Involuntary
Termination.    Subject to Sections 4(d) and 9(o) and Consultant’s continued compliance with Section 5, if Consultant’s service is Involuntarily Terminated, Consultant shall be entitled to receive, in lieu of
any termination benefits to which Consultant may otherwise be entitled under any other plan or program of the Company, the benefits provided below: 

(i)    the Company shall pay to Consultant his fully earned but unpaid retainer, when due, through the date of
Consultant’s Involuntary Termination at the rate then in effect, plus all other benefits, if any, under any Company group retirement plan, nonqualified deferred compensation plan, equity award plan or agreement, health benefits plan or other
Company group benefit plan to which Consultant may be entitled pursuant to the terms of such plans or agreements at the time of Consultant’s Involuntary Termination (the “Accrued Obligations”); 

(ii)    Consultant shall be entitled to receive a termination benefit in an amount equal to (A) Consultant’s
monthly retainer as in effect immediately prior to the date of Consultant’s Involuntary Termination, multiplied by (B) the Termination Payment Multiplier (as defined below), which amount shall be payable in a lump sum sixty (60) days
following Consultant’s Involuntary Termination. For purposes of this Section 4, “Termination Payment Multiplier” shall mean the sum of (1) nine (9) plus (2) one (1) month for each additional twelve-month
period of Consultant’s service with the Company or its affiliates (including Zeno Pharmaceuticals, Inc.) following September 1, 2015; provided, however, that the Termination Payment Multiplier shall not exceed twelve (12);

 (iii)    Consultant shall be entitled to receive Consultant’s Target Bonus for the year in which
Consultant’s Involuntary Termination occurs, prorated for the portion of the year that has expired prior to the date of Consultant’s Involuntary Termination, which amount shall be payable in a lump sum sixty (60) days following
Consultant’s Involuntary Termination; and 
 (iv)    Notwithstanding anything to the contrary in this
Section 4(b), and subject to Sections 4(d) and 9(o) and Consultant’s continued compliance with Section 5, in the event of Consultant’s Involuntary Termination within twelve (12) months following a Change in Control,
(A) the Termination Payment Multiplier for purposes of clauses (ii) and (iv) above shall be deemed to be twelve (12), and (B) the Target Bonus for purposes of clause (iii) above shall not be subject to proration. 

(c)    Termination for Cause, Voluntary Termination, Without Good Reason, Death or Termination for Permanent
Disability. In the event of Consultant’s termination of service as a result of Consultant’s termination by the Company for Cause, Consultant’s voluntary termination of this Agreement without Good Reason, Consultant’s death or
Consultant’s termination of service following Consultant’s Permanent Disability, the Company shall not have any other or further obligations to Consultant under this Agreement (including any financial obligations) except that Consultant
shall be entitled to receive the Accrued Obligations. The foregoing shall be in addition to, and not in lieu of, any and all other rights and remedies which may be available to the Company under the circumstances, whether at law or in equity. 

(d)    Release. As a condition to Consultant’s receipt of any post-termination benefits pursuant to
Section 4(b) above, Consultant (or, in the event of Consultant’s incapacity as a result of his Permanent Disability, Consultant’s legal representative) shall execute a general release of all claims in favor of the Company and its
affiliates (the “Release”) in the form attached 

  
 5 

 
hereto as Exhibit A. In the event the Release does not become effective within the fifty-five (55) day period following the date of Consultant’s Involuntary Termination,
Consultant shall not be entitled to the aforesaid payments and benefits. 
 (e)    Exclusive Remedy. Except as
otherwise expressly required by law or as specifically provided herein, all of Consultant’s rights to compensation and other amounts hereunder (if any) accruing after the termination of Consultant’s service shall cease upon such
termination. In the event of Consultant’s termination of service with the Company, Consultant’s sole remedy shall be to receive the payments and benefits described in this Section 4. In addition, Consultant acknowledges and agrees
that he is not entitled to any reimbursement by the Company for any taxes payable by Consultant as a result of the payments and benefits received by Consultant pursuant to this Section 4, including, without limitation, any excise tax imposed by
Section 4999 of the Code. 
 (f)    No Mitigation. Except as otherwise provided in Section 4(b)(iv)
above, Consultant shall not be required to mitigate the amount of any payment provided for in this Section 4 by seeking other engagements, employment or otherwise, nor shall the amount of any payment or benefit provided for in this
Section 4 be reduced by any compensation earned by Consultant as the result of engagement or employment by another company or self-employment or by retirement benefits; provided, however, that loans, advances or other amounts owed
by Consultant to the Company may be offset by the Company against amounts payable to Consultant under this Section 4. 

(g)    Return of the Company’s Property. In the event of Consultant’s termination of service for any
reason, the Company shall have the right, at its option, to require Consultant to vacate his offices prior to or on the effective date of separation and to cease all activities on the Company’s behalf. Upon Consultant’s termination of
service in any manner, as a condition to Consultant’s receipt of any termination payments described in this Agreement, Consultant shall immediately surrender to the Company all lists, books and records of, or in connection with, the
Company’s business, and all other property belonging to the Company, it being distinctly understood that all such lists, books and records, and other documents, are the property of the Company. Consultant shall deliver to the Company a signed
statement certifying compliance with this Section 4(g) prior to the receipt of any termination payments described in this Agreement. 

5.    Certain Covenants. 

(a)    Noncompetition. Except as may otherwise be approved by the Board, during the term of Consultant’s
service, Consultant shall not have any ownership interest (of record or beneficial) in, or have any interest as an employee, salesman, consultant, officer or director in, or otherwise aid or assist in any manner, any firm, corporation, partnership,
proprietorship or other business that engages in any county, city or part thereof in the United States and/or any foreign country in a business which competes directly or indirectly (as determined by the Board) with the Company’s business in
such county, city or part thereof, so long as the Company, or any successor in interest of the Company to the business and goodwill of the Company, remains engaged in such business in such county, city or part thereof or continues to solicit
customers or potential customers therein; provided, however, that Consultant may own, directly or indirectly, solely as an investment, securities of any entity which are traded on any national securities exchange if

  
 6 

 
Consultant (i) is not a controlling person of, or a member of a group which controls, such entity; or (ii) does not, directly or indirectly, own one percent (1%) or more of any class of
securities of any such entity. 
 (b)    Confidential Information. Consultant and the Company have entered into
the Company’s standard proprietary information and inventions assignment agreement (the “Proprietary Information and Inventions Agreement”). Consultant agrees to perform each and every obligation of Consultant therein
contained. 
 (c)    Solicitation of Employees. During the term of Consultant’s service and for one
(1) year thereafter (the “Restricted Period”), Consultant will not, either directly or through others, solicit or attempt to solicit any employee, independent contractor or consultant of the Company or its affiliates to
terminate his relationship with the Company or its affiliates in order to become an employee, consultant or independent contractor to or for any other person or entity, or otherwise encourage or solicit any employee of the Company or its affiliates
to leave the Company or such affiliates for any reason or to devote less than all of any such employee’s efforts to the affairs of the Company; provided that the foregoing shall not affect any responsibility Consultant may have in connection
with his services with respect to the bona fide hiring and firing of Company personnel. 
 (d)    Solicitation of
Consultants. Consultant shall not during the term of Consultant’s service and for the Restricted Period, directly or indirectly, hire, solicit or encourage to cease work with the Company or any of its affiliates any consultant then under
contract with the Company or any of its affiliates. 
 (e)    Nondisparagement. Consultant agrees that neither he
nor anyone acting by, through, under or in concert with him shall disparage or otherwise communicate negative statements or opinions about the Company, Parent, or their respective board members, officers, employees or businesses. The Company agrees
that neither its Board members nor officers, nor the board members or officers of Parent, shall disparage or otherwise communicate negative statements or opinions about Consultant. Except as may be required by law, neither Consultant, nor any member
of Consultant’s family, nor anyone else acting by, through, under or in concert with Consultant will disclose to any individual or entity (other than Consultant’s legal or tax advisors) the terms of this Agreement. 

(f)    Rights and Remedies Upon Breach. If Consultant breaches or threatens to commit a breach of any of the
provisions of this Section 5 (the “Restrictive Covenants”), the Company shall have the following rights and remedies, each of which rights and remedies shall be independent of the other and severally enforceable, and all of
which rights and remedies shall be in addition to, and not in lieu of, any other rights and remedies available to the Company under law or in equity: 

(i)    Specific Performance. The right and remedy to have the Restrictive Covenants specifically enforced by any
court having equity jurisdiction, all without the need to post a bond or any other security or to prove any amount of actual damage or that money damages would not provide an adequate remedy, it being acknowledged and agreed that any such breach or
threatened breach will cause irreparable injury to the Company and that money damages will not provide adequate remedy to the Company; and 

  
 7 

 (ii)    Accounting and Indemnification. The right and remedy to
require Consultant (A) to account for and pay over to the Company all compensation, profits, monies, accruals, increments or other benefits derived or received by Consultant or any associated party deriving such benefits as a result of any such
breach of the Restrictive Covenants; and (B) to indemnify the Company against any other losses, damages (including special and consequential damages), costs and expenses, including actual attorneys’ fees and court costs, which may be
incurred by them and which result from or arise out of any such breach or threatened breach of the Restrictive Covenants. 

(g)    Severability of Covenants/Blue Pencilling. If any court determines that any of the Restrictive Covenants, or
any part thereof, is invalid or unenforceable, the remainder of the Restrictive Covenants shall not thereby be affected and shall be given full effect, without regard to the invalid portions. If any court determines that any of the Restrictive
Covenants, or any part thereof, are unenforceable because of the duration of such provision or the area covered thereby, such court shall have the power to reduce the duration or area of such provision and, in its reduced form, such provision shall
then be enforceable and shall be enforced. Consultant hereby waives any and all right to attack the validity of the Restrictive Covenants on the grounds of the breadth of their geographic scope or the length of their term. 

(h)    Enforceability in Jurisdictions. The Company and Consultant intend to and do hereby confer jurisdiction to
enforce the Restrictive Covenants upon the courts of any jurisdiction within the geographical scope of such covenants. If the courts of any one or more of such jurisdictions hold the Restrictive Covenants wholly unenforceable by reason of the
breadth of such scope or otherwise, it is the intention of the Company and Consultant that such determination not bar or in any way affect the right of the Company to the relief provided above in the courts of any other jurisdiction within the
geographical scope of such covenants, as to breaches of such covenants in such other respective jurisdictions, such covenants as they relate to each jurisdiction being, for this purpose, severable into diverse and independent covenants. 

(i)    Whistleblower Provision. Nothing herein shall be construed to prohibit Consultant from communicating
directly with, cooperating with, or providing information to, any government regulator, including, but not limited to, the U.S. Securities and Exchange Commission, the U.S. Commodity Futures Trading Commission, or the U.S. Department of Justice.
Consultant acknowledges that the Company has provided Consultant with the following notice of immunity rights in compliance with the requirements of the Defend Trade Secrets Act: (i) Consultant shall not be held criminally or civilly liable
under any Federal or State trade secret law for the disclosure of proprietary information that is made in confidence to a Federal, State, or local government official or to an attorney solely for the purpose of reporting or investigating a suspected
violation of law, (ii) Consultant shall not be held criminally or civilly liable under any Federal or State trade secret law for the disclosure of proprietary information that is made in a complaint or other document filed in a lawsuit or other
proceeding, if such filing is made under seal and (iii) if Consultant files a lawsuit for retaliation by the Company for reporting a suspected violation of law, Consultant may disclose the proprietary information to Consultant’s attorney
and use the proprietary information in the court proceeding, if Consultant files any document containing the proprietary information under seal, and does not disclose the proprietary information, except pursuant to court order. 

  
 8 

 (j)    Definitions. For purposes of this Section 5, the term
“Company” means not only Zeno Management, Inc., but also Parent as well as any company, partnership or entity which, directly or indirectly, controls, is controlled by or is under common control with Zeno Management, Inc.

 6.    Insurance; Indemnification. 

(a)    Insurance. The Company shall have the right to take out life, health, accident, “key-man” or other insurance covering Consultant, in the name of the Company and at the Company’s expense in any amount deemed appropriate by the Company. Consultant shall assist the Company in
obtaining such insurance, including, without limitation, submitting to any required examinations and providing information and data required by insurance companies. 

(b)    Indemnification. Consultant will be provided with indemnification against third party claims related to his
work for the Company to the extent permitted by Delaware law. The Company shall provide Consultant with directors and officers liability insurance coverage at least as favorable as that which the Company may maintain from time to time for its
executive officers. 
 7.    Arbitration. Any dispute, claim or controversy based on, arising out of or relating
to Consultant’s service or this Agreement shall be settled by final and binding arbitration in San Diego, California, before a single neutral arbitrator in accordance with the JAMS Employment Arbitration Rules and Procedures (the
“Rules”), and judgment on the award rendered by the arbitrator may be entered in any court having jurisdiction. The Rules may be found online at www.jamsadr.com. If the parties are unable to agree upon an arbitrator, one
shall be appointed by JAMS in accordance with its Rules. Each party shall pay the fees of its own attorneys, the expenses of its witnesses and all other expenses connected with presenting its case; provided, however, Consultant and the
Company agree that, to the extent permitted by law, the arbitrator may, in his or her discretion, award reasonable attorneys’ fees to the prevailing party; provided, further, that the prevailing party shall be reimbursed for such
fees, costs and expenses within forty-five (45) days following any such award, but in no event later than the last day of Consultant’s taxable year following the taxable year in which the fees, costs and expenses were incurred;
provided, further, that the parties’ obligations pursuant to this sentence shall terminate on the tenth (10th) anniversary of the date of Consultant’s termination of
service. Other costs of the arbitration, including the cost of any record or transcripts of the arbitration, JAMS administrative fees, the fee of the arbitrator, and all other fees and costs, shall be borne by the Company. This Section 7 is
intended to be the exclusive method for resolving any and all claims by the parties against each other for payment of damages under this Agreement or relating to Consultant’s service. This Agreement shall not limit either party’s right to
obtain any provisional remedy, including, without limitation, injunctive or similar relief, from any court of competent jurisdiction as may be necessary to protect their rights and interests pending the outcome of arbitration, including without
limitation injunctive relief, in any court of competent jurisdiction. Seeking any such relief shall not be deemed to be a waiver of such party’s right to compel arbitration. Both Consultant and the Company expressly waive their right to a jury
trial. 

  
 9 

 8.    General Relationship. Consultant’s relationship with
the Company will be that of an independent contractor and nothing in this Agreement should be construed to create a partnership, joint venture, or employer-employee relationship with Consultant. Consultant is not the agent of the Company and is not
authorized to make any representation, warranty, contract, or commitment on behalf of the Company. Consultant will be solely responsible for all tax returns and payments required to be filed with or made to any federal, state or local tax authority
with respect to Consultant’s performance of the services hereunder and receipt of fees under this Agreement. The Company will regularly report amounts paid to Consultant by filing Form 1099-MISC with the Internal Revenue Service as required by
law. Because Consultant is an independent contractor, the Company will not withhold or make payments for social security, make unemployment insurance or disability insurance contributions, or obtain worker’s compensation insurance on
Consultant’s behalf (or for any individual performing services on behalf of Consultant). Consultant agrees to accept exclusive liability for complying with all applicable state and federal laws governing self-employed individuals, including
obligations such as payment of taxes, social security, disability and other contributions based on fees paid to Consultant under this Agreement. 

9.    Miscellaneous. 

(a)    Modification; Prior Claims. This Agreement and the Proprietary Information and Inventions Agreement (and the
other documents referenced therein) set forth the entire understanding of the parties with respect to the subject matter hereof, and supersede all existing agreements between them concerning such subject matter, including any prior consulting
agreement between the Company and Consultant. This Agreement may be amended or modified only with the written consent of Consultant and an authorized representative of the Company. No oral waiver, amendment or modification will be effective under
any circumstances whatsoever. 
 (b)    Assignment; Assumption by Successor. The rights of the Company under this
Agreement may, without the consent of Consultant, be assigned by the Company, in its sole and unfettered discretion, to any person, firm, corporation or other business entity which at any time, whether by purchase, merger or otherwise, directly or
indirectly, acquires all or substantially all of the assets or business of the Company. The Company will require any successor (whether direct or indirect, by purchase, merger or otherwise) to all or substantially all of the business or assets of
the Company expressly to assume and to agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession had taken place; provided, however, that no such
assumption shall relieve the Company of its obligations hereunder. As used in this Agreement, the “Company” shall mean the Company as hereinbefore defined and any successor to its business and/or assets as aforesaid which
assumes and agrees to perform this Agreement by operation of law or otherwise. 
 (c)    Survival. The covenants,
agreements, representations and warranties contained in or made in Sections 4, 5, 6, 7 and 9 of this Agreement shall survive Consultant’s termination of service. 

(d)    Third-Party Beneficiaries. Except as expressly set forth
herein, this Agreement does not create, and shall not be construed as creating, any rights enforceable by any person not a party to this Agreement. 

  
 10 

 (e)    Waiver. The failure of either party hereto at any time to
enforce performance by the other party of any provision of this Agreement shall in no way affect such party’s rights thereafter to enforce the same, nor shall the waiver by either party of any breach of any provision hereof be deemed to be a
waiver by such party of any other breach of the same or any other provision hereof. 
 (f)    Section Headings.
The headings of the several sections in this Agreement are inserted solely for the convenience of the parties and are not a part of and are not intended to govern, limit or aid in the construction of any term or provision hereof. 

(g)    Notices. Any notice required or permitted by this Agreement shall be in writing and shall be delivered as
follows with notice deemed given as indicated: (i) by personal delivery when delivered personally; (ii) by overnight courier upon written verification of receipt; (iii) by email, telecopy or facsimile transmission upon acknowledgment
of receipt of electronic transmission; or (iv) by certified or registered mail, return receipt requested, upon verification of receipt. Notice shall be sent to Consultant at the address listed on the Company’s personnel records and to the
Company at its principal place of business, or such other address as either party may specify in writing. 

(h)    Severability. All Sections, clauses and covenants contained in this Agreement are severable, and in the
event any of them shall be held to be invalid by any court, this Agreement shall be interpreted as if such invalid Sections, clauses or covenants were not contained herein. 

(i)    Governing Law and Venue. This Agreement is to be governed by and construed in accordance with the laws of
the State of California applicable to contracts made and to be performed wholly within such State, and without regard to the conflicts of laws principles thereof. Except as provided in Sections 5 and 7, any suit brought hereon shall be brought
in the state or federal courts sitting in San Diego County, California, the parties hereto hereby waiving any claim or defense that such forum is not convenient or proper. Each party hereby agrees that any such court shall have in personam
jurisdiction over it and consents to service of process in any manner authorized by California law. 
 (j)    Non-transferability of Interest. None of the rights of Consultant to receive any form of compensation payable pursuant to this Agreement shall be assignable or transferable except through a testamentary
disposition or by the laws of descent and distribution upon the death of Consultant. Any attempted assignment, transfer, conveyance, or other disposition (other than as aforesaid) of any interest in the rights of Consultant to receive any form of
compensation to be made by the Company pursuant to this Agreement shall be void. 
 (k)    Gender. Where the
context so requires, the use of the masculine gender shall include the feminine and/or neuter genders and the singular shall include the plural, and vice versa, and the word “person” shall include any corporation, firm, partnership or
other form of association. 
 (l)    Counterparts; Facsimile or .pdf Signatures. This Agreement may be executed
in any number of counterparts, each of which when so executed and delivered will be 

  
 11 

 
deemed an original, and all of which together shall constitute one and the same agreement. This Agreement may be executed and delivered by facsimile or by .pdf file and upon such delivery the
facsimile or .pdf signature will be deemed to have the same effect as if the original signature had been delivered to the other party. 

(m)    Construction. The language in all parts of this Agreement shall in all cases be construed simply, according
to its fair meaning, and not strictly for or against any of the parties hereto. Without limitation, there shall be no presumption against any party on the ground that such party was responsible for drafting this Agreement or any part thereof. 

(n)    Withholding and Other Deductions. All compensation payable to Consultant hereunder shall be subject to such
deductions as the Company is from time to time required to make pursuant to law, governmental regulation or order. 

(o)    Code Section 409A. 

(i)    This Agreement is not intended to provide for any deferral of compensation subject to Section 409A of the
Code, and, accordingly, the termination payments payable under Section 4(b)(ii) and (iii) shall be paid no later than the later of: (A) the fifteenth (15th) day of the third month following Consultant’s first taxable year in
which such amounts are no longer subject to a substantial risk of forfeiture, and (B) the fifteenth (15th) day of the third month following first taxable year of the Company in which such amounts are is no longer subject to substantial risk of
forfeiture, as determined in accordance with Code Section 409A and any Treasury Regulations and other guidance issued thereunder. To the extent applicable, this Agreement shall be interpreted in accordance with Code Section 409A and
Department of Treasury regulations and other interpretive guidance issued thereunder. Each series of installment payments made under this Agreement is hereby designated as a series of “separate payments” within the meaning of
Section 409A of the Code. For purposes of this Agreement, all references to Consultant’s “termination of service” shall mean Consultant’s Separation from Service. 

(ii)    If Consultant is a “specified employee” (as defined in Section 409A of the Code), as determined by
the Company in accordance with Section 409A of the Code, on the date of Consultant’s Separation from Service, to the extent that the payments or benefits under this Agreement are subject to Section 409A of the Code and the delayed
payment or distribution of all or any portion of such amounts to which Consultant is entitled under this Agreement is required in order to avoid a prohibited distribution under Section 409A(a)(2)(B)(i) of the Code, then such portion deferred
pursuant to this Section 9(o)(ii) shall be paid or distributed to Consultant in a lump sum on the earlier of (A) the date that is six (6)-months following Consultant’s Separation from Service, (B) the date of Consultant’s
death or (C) the earliest date as is permitted under Section 409A of the Code. Any remaining payments due under the Agreement shall be paid as otherwise provided herein. 

(iii)    To the extent applicable, this Agreement shall be interpreted in accordance with the applicable exemptions from
Section 409A of the Code. If Consultant and the Company determine that any payments or benefits payable under this Agreement intended to comply with Sections 409A(a)(2), (3) and (4) of the Code do not comply with Section 409A of the
Code, Consultant and the Company agree to amend this Agreement, or take such other actions as 

  
 12 

 
Consultant and the Company deem reasonably necessary or appropriate, to comply with the requirements of Section 409A of the Code and the Treasury Regulations thereunder (and any applicable
transition relief) while preserving the economic agreement of the parties. To the extent that any provision in this Agreement is ambiguous as to its compliance with Section 409A of the Code, the provision shall be read in such a manner that no
payments payable under this Agreement shall be subject to an “additional tax” as defined in Section 409A(a)(1)(B) of the Code. 

(iv)    Any reimbursement of expenses or in-kind benefits payable under this
Agreement shall be made in accordance with Treasury Regulation Section 1.409A-3(i)(1)(iv) and shall be paid on or before the last day of Consultant’s taxable year following the taxable year in which
Consultant incurred the expenses. The amount of expenses reimbursed or in-kind benefits payable during any taxable year of Consultant’s shall not affect the amount eligible for reimbursement or in-kind benefits payable in any other taxable year of Consultant’s, and Consultant’s right to reimbursement for such amounts shall not be subject to liquidation or exchange for any other benefit. 

[SIGNATURE PAGE FOLLOWS] 

  
 13 

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

			
	ZENO MANAGEMENT, INC.
		
	By:	 	 /s/ Anthony Y. Sun, M.D.

	Name:	 	Anthony Y. Sun, M.D.
	Title:	 	President and Chief Executive Officer
	
	CONSULTANT
	
	 /s/ Cam Gallagher

Cam Gallagher

 SIGNATURE PAGE TO CONSULTING AGREEMENT 

  

 EXHIBIT A 

GENERAL RELEASE OF CLAIMS 

[The language in this Release may change based on legal developments and evolving best practices; this form is provided as an example of
what will be included in the final Release document.] 
 This General Release of Claims (“Release”) is entered
into as of this      day of     ,             , between Cam Gallagher (“Consultant”), and Zeno
Management, Inc. (the “Company”) (collectively referred to herein as the “Parties”). 

WHEREAS, Consultant and the Company are parties to that certain Consulting Agreement dated as of February 1, 2019 (the
“Agreement”); 
 WHEREAS, the Parties agree that Consultant is entitled to certain termination payments under the
Agreement, subject to Consultant’s execution of this Release; and 
 WHEREAS, the Company and Consultant now wish to fully and finally
to resolve all matters between them. 
 NOW, THEREFORE, in consideration of, and subject to, the termination payments payable to Consultant
pursuant to the Agreement, the adequacy of which is hereby acknowledged by Consultant, and which Consultant acknowledges that he would not otherwise be entitled to receive, Consultant and the Company hereby agree as follows: 

1.    General Release of Claims by Consultant. 

(a)    Consultant, on behalf of himself and his executors, heirs, administrators, representatives and assigns, hereby
agrees to release and forever discharge the Company and all predecessors, successors and their respective parent corporations, affiliates, related, and/or subsidiary entities, and all of their past and present investors, directors, shareholders,
officers, general or limited partners, employees, attorneys, agents and representatives, and the benefit plans in which Consultant is or has been a participant by virtue of his service to the Company (collectively, the “Company
Releasees”), from any and all claims, debts, demands, accounts, judgments, rights, causes of action, equitable relief, damages, costs, charges, complaints, obligations, promises, agreements, controversies, suits, expenses, compensation,
responsibility and liability of every kind and character whatsoever (including attorneys’ fees and costs), whether in law or equity, known or unknown, asserted or unasserted, suspected or unsuspected (collectively,
“Claims”), which Consultant has or may have had against such entities based on any events or circumstances arising or occurring on or prior to the date hereof or on or prior to the date hereof, arising directly or indirectly
out of, relating to, or in any other way involving in any manner whatsoever Consultant’s service to the Company or the termination thereof, including any and all claims arising under federal, state, or local laws, including without limitation
claims of wrongful discharge, breach of express or implied contract, fraud, misrepresentation, defamation, or liability in tort, and claims of any kind that may be brought in any court or administrative agency. 

  
 1 

 Notwithstanding the generality of the foregoing, Consultant does not release any Claims
which, my law, may not be released, or the following claims: 
 (i)    Claims for indemnity under the
bylaws of the Company, as provided for by Delaware law or under any applicable insurance policy with respect to Consultant’s liability as a director or officer of the Company; 

(ii)    Claims based on any right Consultant may have to enforce the Company’s executory obligations
under the Agreement; 
 (iii)    Claims Consultant may have to vested or earned compensation and
benefits; and 
 (iv)    Consultant’s right to communicate or cooperate with any government agency.

 (b)    CONSULTANT ACKNOWLEDGES THAT HE HAS BEEN ADVISED OF AND IS FAMILIAR WITH THE PROVISIONS OF CALIFORNIA CIVIL
CODE SECTION 1542, WHICH PROVIDES AS FOLLOWS: 
 “A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS THAT THE CREDITOR OR RELEASING PARTY
DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT THE TIME OF EXECUTING THE RELEASE AND THAT, IF KNOWN BY HIM OR HER, WOULD HAVE MATERIALLY AFFECTED HIS OR HER SETTLEMENT WITH THE DEBTOR OR RELEASED PARTY.” 

BEING AWARE OF SAID CODE SECTION, CONSULTANT HEREBY EXPRESSLY WAIVES ANY RIGHTS HE MAY HAVE THEREUNDER, AS WELL AS UNDER ANY OTHER STATUTES OR COMMON LAW
PRINCIPLES OF SIMILAR EFFECT. 
 (c)    Consultant understands that this Release shall become effective, irrevocable,
and binding upon his execution of it. 
 (d)    Consultant further understands that Consultant will not be given any
termination payments under the Agreement unless this Release is effective on or before the date that is fifty-five (55) days following the date of Consultant’s termination of service. 

2.    No Assignment. Consultant represents and warrants to the Company Releasees that there has been no assignment
or other transfer of any interest in any Claim that Consultant may have against the Company Releasees. Consultant agrees to indemnify and hold harmless the Company Releasees from any liability, claims, demands, damages, costs, expenses and
attorneys’ fees incurred as a result of any such assignment or transfer from Consultant. 

3.    Severability. In the event any provision of this Release is found to be unenforceable by an arbitrator or
court of competent jurisdiction, such provision shall be deemed modified to the extent necessary to allow enforceability of the provision as so limited, it being intended that the parties shall receive the benefit contemplated herein to the fullest
extent permitted by law. If a 

  
 2 

 
deemed modification is not satisfactory in the judgment of such arbitrator or court, the unenforceable provision shall be deemed deleted, and the validity and enforceability of the remaining
provisions shall not be affected thereby. 
 4.    Interpretation; Construction. The headings set forth in this
Release are for convenience only and shall not be used in interpreting this Agreement. This Release has been drafted by legal counsel representing the Company, but Consultant has participated in the negotiation of its terms. Furthermore, Consultant
acknowledges that Consultant has had an opportunity to review and revise the Release and have it reviewed by legal counsel, if desired, and, therefore, the normal rule of construction to the effect that any ambiguities are to be resolved against the
drafting party shall not be employed in the interpretation of this Release. Either party’s failure to enforce any provision of this Release shall not in any way be construed as a waiver of any such provision, or prevent that party thereafter
from enforcing each and every other provision of this Release. 
 5.    Governing Law and Venue. This Release
will be governed by and construed in accordance with the laws of the United States of America and the State of California applicable to contracts made and to be performed wholly within such State, and without regard to the conflicts of laws
principles thereof. Any suit brought hereon shall be brought in the state or federal courts sitting in San Diego County, California, the Parties hereby waiving any claim or defense that such forum is not convenient or proper. Each party hereby
agrees that any such court shall have in personam jurisdiction over it and consents to service of process in any manner authorized by California law. 

6.    Entire Agreement. This Release and the Agreement constitute the entire agreement of the Parties in respect of
the subject matter contained herein and therein and supersede all prior or simultaneous representations, discussions, negotiations and agreements, whether written or oral. This Release may be amended or modified only with the written consent of
Consultant and an authorized representative of the Company. No oral waiver, amendment or modification will be effective under any circumstances whatsoever. 

7.    Counterparts. This Release may be executed in multiple counterparts, each of which shall be deemed to be an
original but all of which together shall constitute one and the same instrument. 
 (Signature Page Follows) 

  
 3 

 IN WITNESS WHEREOF, and intending to be legally bound, the Parties have executed the
foregoing Release as of the date first written above. 
  

							
	CONSULTANT	  		  	ZENO MANAGEMENT, INC.
				
	  
	  		  	By:	  	  

	Print Name: Kevin Bunker, Ph.D.	  		  	Print Name:	  	  

		  		  	Title:

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