SEPARATION AGREEMENT

Exhibit 10.2

This Separation Agreement (this “Agreement”) by and between Xxxxxxxxxxx Xxxxxxx (“Employee”) and OvaScience, Inc., a Delaware corporation (the “Company”), is effective eight (8) days after Employee and the Company signing this Agreement (the “Effective Date”), unless Employee rescinds his acceptance of this Agreement as provided in Section 5 below, with reference to the following facts:

A. Employee’s employment with the Company and status as an officer and employee of the Company and each of its affiliates will end effective upon the Separation Date (as defined below).

B. Employee and the Company want to end their relationship amicably and also to establish the obligations of the parties including, without limitation, all amounts due and owing to Employee.

C. The payments and benefits being made available to Employee pursuant to this Agreement are intended to satisfy all outstanding obligations under that certain Retention Agreement by between Employee and the Company dated May 3, 2018 (the “Retention Agreement”). All capitalized terms used in this Agreement without definition or reference have the meanings set forth in the Retention Agreement.

NOW, THEREFORE, in consideration of the mutual covenants and agreements hereinafter set forth, the parties agree as follows:

1. Separation Date. Employee acknowledges and agrees that his status as an officer and employee of the Company will end effective as of the Effective Time of the Merger (as defined in the Merger Agreement (defined below)) (the “Separation Date”). Employee hereby agrees to execute such further document(s) as shall be determined by the Company as necessary or desirable to give effect to the end of Employee’s status as an officer of the Company (including a written resignation as an officer of the Company as required by Section 8.4(b) of the Agreement and Plan of Merger and Reorganization among the Company, Orion Merger Sub, Inc. and Millendo Therapeutics, Inc. dated as of August 8, 2018, as amended (the “Merger Agreement”) and the transaction contemplated thereby, the “Merger”); provided that such documents shall not be inconsistent with any of the terms of this Agreement, and provided further that Employee’s resignation as required by the Merger Agreement will not affect Employee’s right to the Separation Payments and Benefits provided for in this Agreement.

2. Final Paycheck; Payment of Accrued Wages and Expenses.

(a) Final Paycheck. On the Separation Date, the Company will pay Employee all accrued but unpaid base salary and all accrued and unused vacation earned through the Separation Date, subject to standard payroll deductions and withholdings. Employee is entitled to these payments regardless of whether Employee executes this Agreement.

(b) Business Expenses. The Company shall reimburse Employee for all outstanding expenses incurred prior to the Separation Date which are consistent with the Company’s policies in effect from time to time with respect to travel, entertainment and other

business expenses, subject to the Company’s requirements with respect to reporting and documenting such expenses.

3. Separation Payments and Benefits. Without admission of any liability, fact or claim, the Company hereby agrees, subject to this Agreement becoming effective and irrevocable, as well as Employee’s performance of his continuing obligations pursuant to this Agreement, to provide Employee the severance benefits set forth below. Specifically, the Company and Employee agree as follows:

(a) Severance. The Company shall pay to Employee Eight Hundred Eighty Thousand Dollars ($880,000), which represents the sum of (i) twelve (12) months of Employee’s annual base salary and (ii) Employee’s full annual discretionary bonus opportunity, which is sixty percent (60%) of Employee’s base salary, in each case, at the rate in effect immediately prior to the Separation Date, payable in accordance with the Company’s regular payroll procedures proportionately over a twelve (12) month period following the later of the Effective Date or Separation Date and subject to Section 5 of this Agreement.

(b) Change in Control Bonus. The Company shall pay to Employee an amount in cash equal to one percent (1%) of the Transaction Value under and determined pursuant to the terms and conditions of the Retention Agreement. Such payment shall be made within three (3) business days following the Separation Date.

(i) Existing Option Grant. Notwithstanding anything to the contrary in the Nonstatutory Stock Option Agreement between the Company and Employee, dated June 21, 2017 (the “Existing Option Agreement”), with respect to the 1,069,864 options that vest pursuant to Section 2(a) of the Existing Option Agreement (the “Extended Options”), the Extended Options shall become vested and exercisable as of the Change in Control Date, and to the extent not previously exercised, shall remain exercisable until the three (3) year anniversary of the Separation Date. The remaining 713,242 options under the Existing Option Agreement shall become vested and exercisable as of the Change in Control Date, and to the extent not previously exercised, shall remain exercisable in accordance with the terms of the Existing Option Agreement. The options under the Existing Option Agreement shall be subject to all other terms and provisions set forth in the Existing Option Agreement.

(ii) New Option Grants. In accordance with the Nonstatutory Stock Option Agreement between the Company and Employee, dated May 10, 2018 (the “New Nonstatutory Option Agreement”) and the Incentive Stock Option Agreement between the Company and Employee, dated May 10, 2018 (the “New Incentive Stock Option Agreement” and, together with the New Nonstatutory Option Agreement, the “New Option Agreements”), with respect to the 715,000 options under the New Option Agreements (the “New Options”), all such New Options shall become vested and exercisable as of the Change in Control Date. Such New Options shall remain exercisable until the three (3) year anniversary of the Separation Date. The New Options shall be subject to all other terms and provisions set forth in the New Option Agreements.

(d) Healthcare Continuation Coverage. If Employee elects to receive continued healthcare coverage pursuant to the provisions of the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”), the Company shall directly pay, or reimburse Employee for, that portion of the premium for Employee and Employee’s covered dependents necessary such that Employee contributes the same amount to COBRA coverage as Employee contributed to medical, dental and vision coverage prior to the Effective Date, such payment or reimbursement to continue until the earlier of (i) the last day of the twelve (12) month anniversary following the date this Agreement becomes effective and irrevocable or (ii) the date Employee becomes eligible for comparable coverage under another employer’s plans. After the Company ceases to pay premiums pursuant to the preceding sentence, Employee may, if eligible, elect to continue healthcare coverage at Employee’s expense in accordance with the provisions of COBRA. Employee acknowledges that he shall be solely responsible for all matters relating to Employee’s continuation of coverage pursuant to COBRA, including, without limitation, Employee’s election of such coverage and his timely payment of premiums.

(e) Taxes.

(i) Employee understands and agrees that all payments under this Section 3 will be subject to appropriate tax withholding and other deductions. To the extent any taxes may be payable by Employee for the benefits provided to him by this Section 3 beyond those withheld by the Company, Employee agrees to pay them himself and to indemnify and hold the Company and the other entities released herein harmless for any tax claims or penalties, and associated attorneys’ fees and costs, resulting from any failure by him to make required payments. To the extent that any reimbursements payable pursuant to this Agreement are subject to the provisions of Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”), such reimbursements shall be paid to Employee no later than December 31 of the year following the year in which the expense was incurred, the amount of expenses reimbursed in one year shall not affect the amount eligible for reimbursement in any subsequent year, and Employee’s right to reimbursement under this Agreement will not be subject to liquidation or exchange for another benefit.

(ii) If any payment or benefit Employee would receive from the Company or otherwise in connection with the Merger or other similar transaction (a “280G Payment”) would (i) constitute a “parachute payment” within the meaning of Section 280G of the Code, and (ii) but for this sentence, be subject to the excise tax imposed by Section 4999 of the Code (the “Excise Tax”), then any such 280G Payment (a “Payment”) shall be equal to the Reduced Amount. The “Reduced Amount” shall be either (x) the largest portion of the Payment that would result in no portion of the Payment (after reduction) being subject to the Excise Tax or (y) the largest portion, up to and including the total, of the Payment, whichever amount (i.e., the amount determined by clause (x) or by clause (y)), after taking into account all applicable federal, state and local employment taxes, income taxes, and the Excise Tax (all computed at the highest applicable marginal rate), results in Employee’s receipt, on an after-tax basis, of the greater economic benefit notwithstanding that all or some portion of the Payment may be subject to the Excise Tax. If a reduction in a Payment is required pursuant to the preceding sentence and the Reduced Amount is determined pursuant to clause (x) of the preceding sentence, the reduction shall occur in the manner (the “Reduction Method”) that results in the greatest economic benefit for

Employee. If more than one method of reduction will result in the same economic benefit, the items so reduced will be reduced pro rata (the “Pro Rata Reduction Method”). Subsequent to the consummation of the Merger, the accounting firm engaged by the Company (or its successor) for general tax compliance purposes shall perform the foregoing calculations in a reasonable and customary manner. The Company shall bear all expenses with respect to the determinations by such accounting firm required to be made hereunder. If Employee receives a Payment for which the Reduced Amount was determined pursuant to clause (x) of the first paragraph of this Section and the Internal Revenue Service determines thereafter that some portion of the Payment is subject to the Excise Tax, Employee shall promptly return to the Company a sufficient amount of the Payment (after reduction pursuant to clause (x) of the first paragraph of this Section so that no portion of the remaining Payment is subject to the Excise Tax.

(f) Sole Separation Benefit. Employee agrees that the payments provided by this Section 3 are not required under the Company’s normal policies and procedures, and are provided as a severance solely in connection with this Agreement. Employee acknowledges and agrees that the payments referenced in this Section 3 constitute adequate and valuable consideration, in and of themselves, for the promises contained in this Agreement.

4. Full Payment. Except as set forth in Section 11, Employee acknowledges that the payment and arrangements herein shall constitute full and complete satisfaction of any and all amounts properly due and owing to Employee as a result of his employment with the Company and the termination thereof, including, but not limited to, salary, wages, bonuses, accrued vacation/paid time off, notice periods, premiums, leaves, housing allowances, relocation costs, interest, severance, outplacement costs, fees, reimbursable expenses, commissions, stock, stock options, vesting, and any and all other benefits and compensation due to Employee.

5. Employee’s Release of Claims. Employee hereby agrees and acknowledges that by signing this Agreement and accepting the severance payments to be provided to him, and other good and valuable consideration provided for in this Agreement, Employee is waiving his right to assert any form of legal claim against the Company of any kind whatsoever from the beginning of time through the Effective Date. Employee’s waiver and release herein is intended to bar any form of legal claim, charge, complaint or any other form of action (jointly referred to as “Claims”) against the Company seeking any form of relief including, without limitation, equitable relief (whether declaratory, injunctive or otherwise), the recovery of any damages or any other form of monetary recovery whatsoever (including, without limitation, back pay, front pay, compensatory damages, emotional distress damages, punitive damages, attorneys’ fees and any other costs) against the Company, up through the Effective Date.

Without limiting the foregoing general waiver and release of claims, Employee specifically waives and releases the Company from any Claim arising from or related to Employee’s employment relationship with the Company or the termination thereof, including, without limitation:

(i) Claims under any state or federal discrimination, fair employment practices or other employment related statute, regulation or executive order (as they may have been amended through the Effective Date) prohibiting discrimination or harassment based upon

any protected status including, without limitation, race, national origin, age, gender, marital status, disability, veteran status or sexual orientation. Without limitation, specifically included in this paragraph are any Claims arising under the federal Age Discrimination in Employment Act, the Older Workers Benefit Protection Act, the Civil Rights Acts of 1866 and 1871, Title VII of the Civil Rights Act of 1964, the Civil Rights Act of 1991, the Equal Pay Act, the Americans With Disabilities Act and any similar Massachusetts or other state statute.

(ii) Claims under any other state or federal employment related statute, regulation or executive order (as they may have been amended through the Effective Date) relating to wages, hours or any other terms and conditions of employment. Without limitation, specifically included in this paragraph are any Claims arising under the Fair Labor Standards Act, the Family and Medical Leave Act of 1993, the National Labor Relations Act, the Employee Retirement Income Security Act of 1974, the Consolidated Omnibus Budget Reconciliation Act of 1985 (COBRA) and any similar Massachusetts or other state statute.

(iii) Claims under any state or federal common law theory including, without limitation, wrongful discharge, breach of express or implied contract, promissory estoppel, unjust enrichment, breach of a covenant of good faith and fair dealing, violation of public policy, defamation, interference with contractual relations, intentional or negligent infliction of emotional distress, invasion of privacy, misrepresentation, deceit, fraud or negligence.

(iv) Any other Claim arising under state or federal law.

Notwithstanding the foregoing, this Section shall not release the Company from any obligation expressly set forth in this Agreement, nor is Employee releasing any claims to vested benefits (e.g., Employee’s vested 401(k) balance) or to any rights to indemnification that Employee may have pursuant to insurance policy, Company by-law, charter or operating agreement, and/or applicable law.

Employee and the Company acknowledge that Employee is over the age of 40 and that Employee, therefore, has specific rights under the Age Discrimination in Employment Act (“ADEA”) and the Older Workers Benefit Protection Act (the “OWBPA”), which prohibit discrimination on the basis of age. It is the Company’s desire and intent to make certain that Employee fully understands the provisions and effects of this Agreement, which includes a release of claims under the ADEA and OWBPA. To that end, Employee has been encouraged and given the opportunity to consult with legal counsel for the purpose of reviewing the terms of this Agreement. Consistent with the provisions of the ADEA and OWBPA, the Company also is providing Employee with forty five (45) days in which to consider and accept the terms of this Agreement by signing below and returning it to the Company at the address above. Additionally, in Exhibit A, Employee is being provided with certain additional information required by the ADEA and the OWBPA, including the job titles and ages of other employees who were, or were not, separated from employment and offered a separation agreement. Employee may rescind his assent to this Agreement if, within seven (7) days after Employee signs this Agreement, Employee

delivers by hand or sends by mail (certified, return receipt and postmarked within such seven (7) day period) a notice of rescission to the Company at 0 Xxxxxx Xxxxxx, Xxxxxxx, XX 00000.

Also, consistent with the provisions of the ADEA, nothing in this release shall be deemed to prohibit Employee from challenging the validity of this release. Employee understands that nothing in this Agreement shall in any way limit or prohibit Employee from engaging for a lawful purpose in any Protected Activity, provided, however, that Employee agrees not to seek or accept any monetary award from such a proceeding (except with respect to proceedings before the Securities and Exchange Commission). For purposes of this Agreement, “Protected Activity” shall mean filing a charge, complaint, or report with, or otherwise communicating with, cooperating with or participating in any investigation or proceeding that may be conducted by, any federal, state or local government agency or commission, including the Securities and Exchange Commission, the Equal Employment Opportunity Commission, the Occupational Safety and Health Administration, and the National Labor Relations Board (“Government Agencies”). Employee understands that in connection with such Protected Activity, Employee is permitted to disclose documents or other information as permitted by law, and without giving notice to, or receiving authorization from, the Company. Notwithstanding the foregoing, Employee agrees to take all reasonable precautions to prevent any unauthorized use or disclosure of any information that may constitute Company confidential information to any parties other than the relevant Government Agencies. Employee further understands that “Protected Activity” does not include the disclosure of any Company attorney-client privileged communications, and that any such disclosure without the Company’s written consent shall constitute a material breach of this Agreement. In addition, pursuant to the Defend Trade Secrets Act of 2016, Employee is notified that an individual will not be held criminally or civilly liable under any federal or state trade secret law for the disclosure of a trade secret that (i) is made in confidence to a federal, state, or local government official (directly or indirectly) or to an attorney solely for the purpose of reporting or investigating a suspected violation of law, or (ii) is made in a complaint or other document filed in a lawsuit or other proceeding, if (and only if) such filing is made under seal. In addition, an individual who files a lawsuit for retaliation by an employer for reporting a suspected violation of law may disclose the trade secret to the individual’s attorney and use the trade secret information in the court proceeding, if the individual files any document containing the trade secret under seal and does not disclose the trade secret, except pursuant to court order.

Employee acknowledges that he has carefully read and understands the scope and effect of the provisions of this Agreement, has been advised to consult with an attorney and that he has had the opportunity to do so. Employee has not relied upon any representations or statements made by the Company that are not specifically set forth in this Agreement.

Employee acknowledges and agrees that, but for providing this waiver and release of claims, Employee would not be receiving the severance being provided to him under this Agreement.

6. Non-Disparagement, Transition, Transfer of Company Property and Limitations on Service. Both parties further agree that:

(a) Non-Disparagement. Both parties agree that they shall not disparage, criticize or defame the other party and their respective directors, officers, agents, partners,

stockholders, employees, products, services, technology or business, either publicly or privately. Nothing in this Section 6(a) shall have application to any evidence or testimony required by any court, arbitrator or government agency. The parties agree that the Company’s obligations under this Section 6(a) shall only apply to its officers and only for so long as each remains employed by the Company.

(b) Transition. Each of the Company and Employee shall use their respective reasonable efforts to cooperate with each other in good faith to facilitate a smooth transition of Employee’s duties to other employee(s) of the Company.

(c) Transfer of Company Property. On or before the Separation Date, Employee shall turn over to the Company all files, memoranda, records, and other documents, and any other physical or personal property which are the property of the Company and which he had in his possession, custody or control at the time he signed this Agreement.

7. Employee Representations. Employee warrants and represents that (a) he has not filed or authorized the filing of any complaints, charges or lawsuits against the Company or any affiliate of the Company with any governmental agency or court, and that if, unbeknownst to Employee, such a complaint, charge or lawsuit has been filed on his behalf, he will immediately cause it to be withdrawn and dismissed, (b) he has reported all hours worked as of the date of this Agreement and has been paid all compensation, wages, bonuses, commissions, and/or benefits to which he may be entitled and no other compensation, wages, bonuses, commissions and/or benefits are due to him, except as provided in this Agreement, (c) he has no known workplace injuries or occupational diseases and has been provided and/or has not been denied any leave requested under the Family and Medical Leave Act or any similar state law, (d) the execution, delivery and performance of this Agreement by Employee does not and will not conflict with, breach, violate or cause a default under any agreement, contract or instrument to which Employee is a party or any judgment, order or decree to which Employee is subject, and (e) upon the execution and delivery of this Agreement by the Company and Employee, this Agreement will be a valid and binding obligation of Employee, enforceable in accordance with its terms.

8. No Assignment by Employee. Employee warrants and represents that no portion of any of the matters released herein, and no portion of any recovery or settlement to which Employee might be entitled, has been assigned or transferred to another person, firm or corporation not a party to this Agreement, in any manner, including by way of subrogation or operation of law or otherwise. If any claim, action, demand or suit should be made or instituted against the Company or any other releasee because of any actual assignment, subrogation or transfer by Employee, Employee agrees to indemnify and hold harmless the Company and all other releasees against such claim, action, suit or demand, including necessary expenses of investigation, attorneys’ fees and costs. In the event of Employee’s death, this Agreement shall inure to the benefit of Employee and Employee’s executors, administrators, heirs, distributees, devisees, and legatees. None of Employee’s rights or obligations may be assigned or transferred by Employee, other than Employee’s rights to payments hereunder, which may be transferred only upon Employee’s death by will or operation of law.

9. Confidentiality. Employee agrees to maintain in complete confidence the existence of this Agreement, the contents and terms of this Agreement, and the consideration for this

Agreement (hereinafter collectively referred to as “Separation Information”). Except as required by law, Employee may disclose Separation Information only to Employee’s immediate family members, the Court in any proceedings to enforce the terms of this Agreement, Employee’s counsel, and Employee’s accountant and any professional tax advisor to the extent that they need to know the Separation Information in order to provide advice on tax treatment or to prepare tax returns, and must prevent disclosure of any Separation Information to all other third parties. Employee agrees that Employee will not publicize, directly or indirectly, any Separation Information.

10. Governing Law. This Agreement shall be construed and enforced in accordance with, and the rights of the parties shall be governed by, the laws of the Commonwealth of Massachusetts or, where applicable, United States federal law, in each case, without regard to any conflicts of laws provisions or those of any state other than Massachusetts.

11. Miscellaneous. Employee further acknowledges that, other than the Existing Option Agreement, the Extended Options, the New Option Agreements, and the provisions contained in the indemnification agreement between Employee and the Company, attached as Exhibit B, to which the Employee is entitled pursuant to this Agreement, this Agreement shall supersede each agreement entered into between Employee and the Company regarding Employee’s employment, including, without limitation, any offer letter, the Retention Agreement and that certain letter employment agreement by and between Employee and the Company dated June 21, 2017, and each such agreement shall be deemed terminated and of no further effect as of the Separation Date. The Company and Employee acknowledge that the separation of the Employee’s employment with the Company is intended to constitute an involuntary separation from service for the purposes of Section 409A of the Code, and the related Department of Treasury regulations. Employee acknowledges that there are no other agreements, written, oral or implied, and that he may not rely on any prior negotiations, discussions, representations or agreements. This Agreement may be modified only in writing, and such writing must be signed by both parties and recited that it is intended to modify this Agreement. This Agreement may be executed in separate counterparts, each of which is deemed to be an original and all of which taken together constitute one and the same agreement.

12. Company Assignment and Successors. The Company shall assign its rights and obligations under this Agreement to any successor to all or substantially all of the business or the assets of the Company (by merger or otherwise). This Agreement shall be binding upon and inure to the benefit of the Company and its successors, assigns, personnel and legal representatives.

13. Employee’s Cooperation. After the Separation Date, Employee shall cooperate with the Company and its affiliates, upon the Company’s reasonable request, with respect to any internal investigation or administrative, regulatory or judicial proceeding involving matters within the scope of Employee’s duties and responsibilities to the Company or its affiliates during his employment with the Company (including, without limitation, Employee being available to the Company upon reasonable notice for interviews and factual investigations, appearing at the Company’s reasonable request to give testimony without requiring service of a subpoena or other legal process, and turning over to the Company all relevant Company documents which are or may have come into Employee’s possession during his employment); provided, however, that any such

request by the Company shall not be unduly burdensome or interfere with Employee’s personal schedule or ability to engage in gainful employment.

14. ARBITRATION. THE PARTIES AGREE THAT ANY AND ALL DISPUTES ARISING OUT OF THE TERMS OF THIS AGREEMENT, THEIR INTERPRETATION, AND ANY OF THE MATTERS HEREIN RELEASED, SHALL BE SUBJECT TO ARBITRATION IN MIDDLESEX COUNTY, BEFORE THE JUDICIAL ARBITRATION AND MEDIATION SERVICE (“JAMS”) UNDER ITS COMPREHENSIVE ARBITRATION RULES (“JAMS RULES”) AND MASSACHUSETTS LAW. THE ARBITRATOR MAY GRANT INJUNCTIONS AND OTHER RELIEF IN SUCH DISPUTES. THE ARBITRATOR SHALL ADMINISTER AND CONDUCT ANY ARBITRATION IN ACCORDANCE WITH MASSACHUSETTS LAW, AND THE ARBITRATOR SHALL APPLY SUBSTANTIVE AND PROCEDURAL MASSACHUSETTS LAW TO ANY DISPUTE OR CLAIM, WITHOUT REFERENCE TO ANY CONFLICT-OF-LAW PROVISIONS OF ANY JURISDICTION. TO THE EXTENT THAT THE JAMS RULES CONFLICT WITH MASSACHUSETTS LAW, MASSACHUSETTS LAW SHALL TAKE PRECEDENCE. THE DECISION OF THE ARBITRATOR SHALL BE FINAL, CONCLUSIVE, AND BINDING ON THE PARTIES TO THE ARBITRATION. THE PARTIES AGREE THAT THE PREVAILING PARTY IN ANY ARBITRATION SHALL BE ENTITLED TO INJUNCTIVE RELIEF IN ANY COURT OF COMPETENT JURISDICTION TO ENFORCE THE ARBITRATION AWARD. THE PARTIES TO THE ARBITRATION SHALL EACH PAY HALF THE COSTS AND EXPENSES OF SUCH ARBITRATION, AND EACH PARTY SHALL SEPARATELY PAY FOR ITS RESPECTIVE COUNSEL FEES AND EXPENSES; PROVIDED, HOWEVER, THAT THE ARBITRATOR SHALL AWARD ATTORNEYS’ FEES AND COSTS TO THE PREVAILING PARTY, EXCEPT AS PROHIBITED BY LAW. THE PARTIES AGREE THAT PUNITIVE DAMAGES SHALL BE UNAVAILABLE IN ARBITRATION. THE PARTIES HEREBY AGREE TO WAIVE THEIR RIGHT TO HAVE ANY DISPUTE BETWEEN THEM RESOLVED IN A COURT OF LAW BY A JUDGE OR JURY. NOTWITHSTANDING THE FOREGOING, THIS SECTION WILL NOT PREVENT EITHER PARTY FROM SEEKING INJUNCTIVE RELIEF (OR ANY OTHER PROVISIONAL REMEDY) FROM ANY COURT HAVING JURISDICTION OVER THE PARTIES AND THE SUBJECT MATTER OF THEIR DISPUTE RELATING TO THIS AGREEMENT AND THE AGREEMENTS INCORPORATED HEREIN BY REFERENCE. SHOULD ANY PART OF THE ARBITRATION AGREEMENT CONTAINED IN THIS PARAGRAPH CONFLICT WITH ANY OTHER ARBITRATION AGREEMENT BETWEEN THE PARTIES, THE PARTIES AGREE THAT THIS ARBITRATION AGREEMENT SHALL GOVERN.

(Signature page(s) follow)

IN WITNESS WHEREOF, the undersigned have caused this Separation Agreement to be duly executed and delivered as of the date indicated next to their respective signatures below.

	EMPLOYEE

DATED: December 5, 2018	By:	/s/ Xxxxxxxxxxx Xxxxxxx

	Name:	Xxxxxxxxxxx Xxxxxxx


	OVASCIENCE, INC.

DATED: December 5, 2018	By:	/s/ Xxxxxxxx Xxxxxx

	Name:	Xxxxxxxx Xxxxxx

	Title:	Senior Vice President, Finance

EXHIBIT A

Personnel Affected by Reduction and Eligible for Severance Benefits

As stated in Employee’s Separation Agreement, this Exhibit is designed to provide Employee with additional information regarding the ages and job titles of employees whose jobs were impacted by the present reduction in personnel at OvaScience, Inc. (the “Company”).

In order to provide Employee with a full overview of this reduction, below is a list showing the age and job title for each employee whose job was reviewed pursuant to the reduction. Note the following additional information, which is designed to help Employee best understand the data being provided:

· All employees of the Company were eligible for the reduction.

· All employees of the Company were selected for the reduction. The employment decisions were based on the Company’s proposed merger as described in the Company’s Registration Statement filed with the Securities and Exchange Commission.

Employees Selected for the Reduction

TITLE		AGE
Chief Executive Officer		49
Chief Financial Officer		37
Chief Scientific Officer		62
SVP, Corporate Development		49
VP, Strategy & Operations		32
Research Associate II		40

Employees Not Selected for the Reduction

N/A

The Company appreciates the sensitive nature of this information. The Company is obligated by federal law, however, to provide Employee with such information so that Employee can better evaluate the Company’s offer of separation terms. Accordingly, the Company asks that Employee, in turn, also respects the sensitive and confidential nature of the information provided.

EXHIBIT B

INDEMNIFICATION AGREEMENT

THIS AGREEMENT (the “Agreement”) is made and entered into as of December 5, 2018 between OvaScience, Inc., a Delaware corporation (the “Company”), and Xxxxxxxxxxx Xxxxxxx, M.D., M.B.A. (“Indemnitee”).

WITNESSETH THAT:

WHEREAS, Indemnitee performs a valuable service for the Company;

WHEREAS, the Amended and Restated Certificate of Incorporation of the Company (the “Charter”) provides for the indemnification of the officers and directors of the Company to the maximum extent authorized by Section 145 of the Delaware General Corporation Law (the “Law”);

WHEREAS, the Charter and the Delaware General Corporation Law, by their nonexclusive nature, permit contracts between the Company and the officers or directors of the Company with respect to indemnification of such officers or directors;

WHEREAS, in accordance with the authorization as provided by the Law, the Company may purchase and maintain a policy or policies of directors’ and officers’ liability insurance (“D & O Insurance”), covering certain liabilities which may be incurred by its officers or directors in the performance of their obligations to the Company; and

WHEREAS, in order to induce Indemnitee to continue to serve as a director or officer of the Company, the Company has determined and agreed to enter into this contract with Indemnitee with the explicit acknowledgement of the intended third party beneficiaries set forth in Section 2 hereof.

NOW, THEREFORE, in consideration of Indemnitee’s service as a director or officer, the parties hereto agree as follows:

1. Indemnity of Indemnitee. The Company hereby agrees to hold harmless and indemnify Indemnitee to the fullest extent permitted by law, as such may be amended from time to time. In furtherance of the foregoing indemnification, and without limiting the generality thereof:

(a) Proceedings Other Than Proceedings by or in the Right of the Company. Indemnitee shall be entitled to the rights of indemnification provided in this Section l(a) if, by reason of Indemnitee’s Corporate Status (as hereinafter defined), Indemnitee is, or is threatened to be made, a party to or participant in any Proceeding (as hereinafter defined) other than a Proceeding by or in the right of the Company. Pursuant to this Section 1(a), Indemnitee shall be indemnified against all Expenses (as hereinafter defined) and Liabilities (as hereinafter defined) incurred by Indemnitee or on Indemnitee’s behalf in connection with such Proceeding or any claim, issue or matter therein, if the Indemnitee acted in good faith and in a manner Indemnitee reasonably believed to be in or not opposed to the best interests of the Company and, with respect to any criminal Proceeding, the Indemnitee had no reasonable cause to believe Indemnitee’s conduct was unlawful.

(b) Proceedings by or in the Right of the Company. Indemnitee shall be entitled to the rights of indemnification provided in this Section 1(b) if, by reason of Indemnitee’s Corporate Status, Indemnitee is, or is threatened to be made, a party to or participant in any Proceeding brought by or in the right of the Company. Pursuant to this Section 1(b), Indemnitee shall be indemnified against all Expenses actually

and reasonably incurred by Indemnitee or on Indemnitee’s behalf in connection with such Proceeding if the Indemnitee acted in good faith and in a manner the Indemnitee reasonably believed to be in or not opposed to the best interests of the Company; provided, however, that, if applicable law so provides, no indemnification against such Expenses shall be made in respect of any claim, issue or matter in such Proceeding as to which Indemnitee shall have been adjudged to be liable to the Company unless and to the extent that the Court of Chancery of the State of Delaware shall determine that such indemnification may be made.

(c) Indemnification for Expenses of a Party Who is Wholly or Partly Successful. Notwithstanding and in addition to any other provision of this Agreement, to the extent that Indemnitee is, by reason of Indemnitee’s Corporate Status, a party to and is successful, on the merits or otherwise, in any Proceeding, Indemnitee shall be indemnified to the maximum extent permitted by law, as such may be amended from time to time, against all Expenses actually and reasonably incurred by Indemnitee or on Indemnitee’s behalf in connection therewith. If Indemnitee is not wholly successful in such Proceeding but is successful, on the merits or otherwise, as to one or more but less than all claims, issues or matters in such Proceeding, the Company shall indemnify Indemnitee against all Expenses actually and reasonably incurred by Indemnitee or on Indemnitee’s behalf in connection with each successfully resolved claim, issue or matter. For purposes of this Section and without limitation, the termination of any claim, issue or matter in such a Proceeding by dismissal, with or without prejudice, shall be deemed to be a successful result as to such claim, issue or matter.

(d) Indemnification of Appointing Stockholder. If (i) Indemnitee is or was affiliated with one or more venture capital funds that has invested in the Company (an “Appointing Stockholder”), and (ii) the Appointing Stockholder is, or is threatened to be made, a party to or a participant in any Proceeding, and (iii) the Appointing Stockholder’s involvement in the Proceeding (A) arises primarily out of, or relates to, any action taken by the Company that was approved by the Board and (B) arises out of facts or circumstances that are the same or substantially similar to the facts and circumstances that form the basis of claims that have been, could have been or could be brought against the Indemnitee in a Proceeding, regardless of whether the legal basis of the claims against the Indemnitee and the Appointing Stockholder are the same or similar, then the Appointing Stockholder shall be entitled to all of the indemnification rights and remedies under this Agreement pursuant to this Agreement as if the Appointing Stockholder were the Indemnitee.

(e) The rights provided to the Appointing Stockholder under this Section 2 shall (i) be suspended during any period during which the Appointing Stockholder does not have a representative on the Board and (ii) terminate on an initial public offering of the Company’s Common Stock; provided, however, that in the event of any such suspension or termination, the Appointing Stockholder’s rights to indemnification will not be suspended or terminated with respect to any Proceeding based in whole or in part on facts and circumstances occurring at any time prior to such suspension or termination regardless of whether the Proceeding arises before or after such suspension or termination.

2. Additional Indemnity. In addition to, and without regard to any limitations on, the indemnification provided for in Section 1, the Company shall and hereby does indemnify and hold harmless Indemnitee against all Expenses and Liabilities incurred by Indemnitee or on Indemnitee’s behalf if, by reason of Indemnitee’s Corporate Status, Indemnitee is, or is threatened to be made, a party to or participant in any Proceeding (including a Proceeding by or in the right of the Company), including, without limitation, all liability arising out of the negligence or active or passive wrongdoing of Indemnitee. The only limitation that shall exist upon the Company’s obligations pursuant to this Agreement shall be that the Company shall not be obligated to make any payment to Indemnitee that is finally determined (under the procedures, and subject to the presumptions, set forth in Sections 6, 7 and 20 hereof) to be unlawful.

3. Contribution in the Event of Joint Liability.

(a) Whether or not the indemnification provided in Sections 1 and 2 hereof is available, in respect of any threatened, pending or completed action, suit or proceeding in which Company is jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), Company shall pay, in the first instance, the entire amount of any judgment or settlement of such action, suit or proceeding without requiring Indemnitee to contribute to such payment and Company hereby waives and relinquishes any right of contribution it may have against Indemnitee. Company shall not enter into any settlement of any action, suit or proceeding in which Company is jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding) unless such settlement provides for a full and final release of all claims asserted against Indemnitee.

(b) Without diminishing or impairing the obligations of the Company set forth in the preceding subparagraph, if, for any reason, Indemnitee shall elect or be required to pay all or any portion of any judgment or settlement in any threatened, pending or completed action, suit or proceeding in which Company is jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), Company shall contribute to the amount of Expenses and Liabilities incurred and payable by Indemnitee in proportion to the relative benefits received by the Company and all officers, directors or employees of the Company, other than the Indemnitee, who are jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), on the one hand, and Indemnitee, on the other hand, from the transaction from which such action, suit or proceeding arose; provided, however, that the proportion determined on the basis of relative benefit may, to the extent necessary to conform to law, be further adjusted by reference to the relative fault of the Company and all officers, directors or employees of the Company, other than the Indemnitee, who are jointly liable with Indemnitee (or would be if joined in such action, suit or proceeding), on the one hand, and Indemnitee, on the other hand, in connection with the events that resulted in such Expenses and Liabilities, as well as any other equitable considerations which the law may require to be considered.

(c) Company hereby agrees to fully indemnify and hold Indemnitee harmless from any claims of contribution which may be brought by officers, directors or employees of the Company, other than the Indemnitee who may be jointly liable with Indemnitee.

(d) To the fullest extent permissible under applicable law, if the indemnification provided for in this Agreement is unavailable to Indemnitee for any reason whatsoever, the Company, in lieu of indemnifying Indemnitee, shall contribute to the amount incurred by Indemnitee, whether for Liabilities and/or for Expenses, in connection with any claim relating to an indemnifiable event under this Agreement, in such proportion as is deemed fair and reasonable in light of all of the circumstances of such Proceeding in order to reflect (i) the relative benefits received by the Company and Indemnitee as a result of the event(s) and/or transaction(s) giving cause to such Proceeding; and/or (ii) the relative fault of the Company (and its directors, officers, employees and agents) and Indemnitee in connection with such event(s) and/or transaction(s).

4. Indemnification for Expenses of a Witness or in Response to a Subpoena. Notwithstanding any other provision of this Agreement, to the extent that Indemnitee is, by reason of Indemnitee’s Corporate Status, a witness or is made (or asked) to respond to discovery requests in any Proceeding involving the Company, its officers, directors, shareholders or creditors to which Indemnitee is not a party, Indemnitee shall be indemnified against all Expenses actually and reasonably incurred by Indemnitee in connection therewith and in the manner set forth in this Agreement.

5. Advancement of Expenses. Notwithstanding any other provision of this Agreement, the Company shall advance all Expenses incurred by or on behalf of Indemnitee in connection with any

Proceeding by reason of Indemnitee’s Corporate Status within thirty (30) days after the receipt by the Company of a statement or statements from Indemnitee requesting such advance or advances from time to time, whether prior to or after final disposition of such Proceeding. Such statement or statements shall reasonably evidence the Expenses incurred by Indemnitee and shall include or be preceded or accompanied by an undertaking by or on behalf of Indemnitee to repay any Expenses advanced if it shall ultimately be determined that Indemnitee is not entitled to be indemnified against such Expenses. Any advances and undertakings to repay pursuant to this Section 5 shall be unsecured and interest free and made without regard to Indemnitee’s financial ability to repay such Expenses.

6. Procedures and Presumptions for Determination of Entitlement to Indemnification. It is the intent of this Agreement to secure for Indemnitee rights of indemnity that are at least as favorable as may be permitted under the Delaware General Corporation Law and public policy of the State of Delaware. Accordingly, the parties agree that the following procedures and presumptions shall apply in the event of any question as to whether Indemnitee is entitled to indemnification under this Agreement:

(a) To obtain indemnification under this Agreement, Indemnitee shall submit to the Company a written request, including therein or therewith such documentation and information as is reasonably available to Indemnitee and is reasonably necessary to determine whether and to what extent Indemnitee is entitled to indemnification. The Secretary of the Company shall, promptly upon receipt of such a request for indemnification, advise the Board of Directors in writing that Indemnitee has requested indemnification. Notwithstanding anything in this Agreement to the contrary, no determination (if required by applicable law) as to entitlement to indemnification under this Agreement shall be required to be made prior to the final disposition of the Proceeding.

(b) Upon written request by Indemnitee for indemnification pursuant to the first sentence of Section 6(a) hereof, a determination, if required by applicable law, with respect to Indemnitee’s entitlement thereto shall be made in the specific case by one of the following four methods, which shall be at the election of the Board: (1) by a majority vote of the disinterested directors, even though less than a quorum, (2) by a committee of disinterested directors designated by a majority vote of the disinterested directors, even though less than a quorum, (3) by independent legal counsel in a written opinion to the Board, a copy of which shall be delivered to the Indemnitee, or (4) by the stockholders.

(c) If the determination of entitlement to indemnification is to be made by Independent Counsel pursuant to Section 6(b) hereof, the Independent Counsel shall be selected as provided in this Section 6(c). The Independent Counsel shall be selected by the Board). Indemnitee may, within ten (10) days after such written notice of selection shall have been given, deliver to the Company, as the case may be, a written objection to such selection; provided, however, that such objection may be asserted only on the ground that the Independent Counsel so selected does not meet the requirements of “Independent Counsel” as defined in Section 13 of this Agreement, and the objection shall set forth with particularity the factual basis of such assertion. Absent a proper and timely objection, the person so selected shall act as Independent Counsel. If a written objection is made and substantiated, the Independent Counsel selected may not serve as Independent Counsel unless and until such objection is withdrawn or a court has determined that such objection is without merit. If, within twenty (20) days after submission by Indemnitee of a written request for indemnification pursuant to Section 6(a) hereof, no Independent Counsel shall have been selected and not objected to, either the Company or Indemnitee may petition the Court of Chancery of the State of Delaware or other court of competent jurisdiction for resolution of any objection which shall have been made by the Indemnitee to the Company’s selection of Independent Counsel and/or for the appointment as Independent Counsel of a person selected by the court or by such other person as the court shall designate, and the person with respect to whom all objections are so resolved or the person so appointed shall act as Independent Counsel under Section 6(b) hereof. The Company shall pay any and all reasonable fees and expenses of Independent Counsel incurred by

such Independent Counsel in connection with acting pursuant to Section 6(b) hereof, and the Company shall pay all reasonable fees and expenses incident to the procedures of this Section 6(c), regardless of the manner in which such Independent Counsel was selected or appointed.

(d) In making a determination with respect to entitlement to indemnification hereunder, the person or persons or entity making such determination shall presume that Indemnitee is entitled to indemnification under this Agreement. Anyone seeking to overcome this presumption shall have the burden of proof and the burden of persuasion, by clear and convincing evidence.

(e) Indemnitee shall be deemed to have acted in good faith if Indemnitee’s action is based on the records or books of account of the Enterprise (as hereinafter defined), including financial statements, or on information supplied to Indemnitee by the officers of the Enterprise in the course of their duties, or on the advice of legal counsel for the Enterprise or on information or records given or reports made to the Enterprise by an independent certified public accountant or by an appraiser or other expert selected by the Enterprise. In addition, the knowledge and/or actions, or failure to act, of any director, officer, agent or employee of the Enterprise shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement. Whether or not the foregoing provisions of this Section 6(e) are satisfied, it shall in any event be presumed that Indemnitee has at all times acted in good faith and in a manner Indemnitee reasonably believed to be in or not opposed to the best interests of the Company. Anyone seeking to overcome this presumption shall have the burden of proof and the burden of persuasion, by clear and convincing evidence.

(f) If the person, persons or entity empowered or selected under Section 6 to determine whether Indemnitee is entitled to indemnification shall not have made a determination within sixty (60) days after receipt by the Company of the request therefor, the requisite determination of entitlement to indemnification shall be deemed to have been made and Indemnitee shall be entitled to such indemnification absent (i) a misstatement by Indemnitee of a material fact, or an omission of a material fact necessary to make Indemnitee’s statement not materially misleading, in connection with the request for indemnification, or (ii) such indemnification is prohibited under applicable law; provided, however, that such sixty (60) day period may be extended for a reasonable time, not to exceed an additional thirty (30) days, if the person, persons or entity making the determination with respect to entitlement to indemnification in good faith requires such additional time to obtain or evaluate documentation and/or information relating thereto; and provided, further, that the foregoing provisions of this Section 6(f) shall not apply if the determination of entitlement to indemnification is to be made by the stockholders pursuant to Section 6(b) of this Agreement and if (A) within fifteen (15) days after receipt by the Company of the request for such determination the Board of Directors or the Disinterested Directors, if appropriate, resolve to submit such determination to the stockholders for their consideration at an annual meeting thereof to be held within seventy five (75) days after such receipt and such determination is made thereat, or (B) a special meeting of stockholders is called within fifteen (15) days after such receipt for the purpose of making such determination, such meeting is held for such purpose within sixty (60) days after having been so called and such determination is made thereat.

(g) Indemnitee shall cooperate with the person, persons or entity making such determination with respect to Indemnitee’s entitlement to indemnification, including providing to such person, persons or entity upon reasonable advance request any documentation or information which is not privileged or otherwise protected from disclosure and which is reasonably available to Indemnitee and reasonably necessary to such determination. Any Independent Counsel, member of the Board of Directors, or stockholder of the Company shall act reasonably and in good faith in making a determination of the Indemnitee’s entitlement to indemnification under this Agreement. Any costs or expenses (including attorneys’ fees and disbursements) incurred by Indemnitee in so cooperating with the person, persons or entity making such determination shall be borne by the Company (irrespective of the determination as to

Indemnitee’s entitlement to indemnification) and the Company hereby indemnifies and agrees to hold Indemnitee harmless therefrom.

(h) The Company acknowledges that a settlement or other disposition short of final judgment may be successful if it permits a party to avoid expense, delay, distraction, disruption and uncertainty. In the event that any action, claim or proceeding to which Indemnitee is a party is resolved in any manner other than by adverse judgment against Indemnitee (including, without limitation, settlement of such action, claim or proceeding with or without payment of money or other consideration) it shall be presumed that Indemnitee has been successful on the merits or otherwise in such action, suit or proceeding. Anyone seeking to overcome this presumption shall have the burden of proof and the burden of persuasion, by clear and convincing evidence.

(i) The termination of any Proceeding or of any claim, issue or matter therein, by judgment, order, settlement or conviction, or upon a plea of nolo contendere or its equivalent, shall not (except as otherwise expressly provided in this Agreement) of itself adversely affect the right of Indemnitee to indemnification or create a presumption that Indemnitee did not act in good faith and in a manner which he reasonably believed to be in or not opposed to the best interests of the Company or, with respect to any criminal Proceeding, that Indemnitee had reasonable cause to believe that Indemnitee’s conduct was unlawful.

7. Remedies of Indemnitee.

(a) In the event that (i) a determination is made pursuant to Section 6 of this Agreement that Indemnitee is not entitled to indemnification under this Agreement, (ii) advancement of Expenses is not timely made pursuant to Section 5 of this Agreement, (iii) no determination of entitlement to indemnification shall have been made pursuant to Section 6(b) of this Agreement within ninety (90) days after receipt by the Company of the request for indemnification, (iv) payment of indemnification is not made pursuant to this Agreement within ten (10) days after receipt by the Company of a written request therefor, (v) no contribution has been timely made pursuant to Section 3 hereof or (vi) payment of indemnification is not made within ten (10) days after a determination has been made that Indemnitee is entitled to indemnification or such determination is deemed to have been made pursuant to Section 6 of this Agreement, Indemnitee shall be entitled to an adjudication in an appropriate court of the State of Delaware, or in any other court of competent jurisdiction, of Indemnitee’s entitlement to such indemnification. Indemnitee shall commence such proceeding seeking an adjudication within 180 days following the date on which Indemnitee first has the right to commence such proceeding pursuant to this Section 7(a). The Company shall not oppose Indemnitee’s right to seek any such adjudication.

(b) In the event that a determination shall have been made pursuant to Section 6(b) of this Agreement that Indemnitee is not entitled to indemnification, any judicial proceeding commenced pursuant to this Section 7 shall be conducted in all respects as a de novo trial on the merits, and Indemnitee shall not be prejudiced by reason of that adverse determination under Section 6(b).

(c) If a determination shall have been made pursuant to Section 6(b) of this Agreement that Indemnitee is entitled to indemnification, the Company shall be bound by such determination in any judicial proceeding commenced pursuant to this Section 7, absent (i) a misstatement by Indemnitee of a material fact, or an omission of a material fact necessary to make Indemnitee’s misstatement not materially misleading in connection with the application for indemnification, or (ii) a prohibition of such indemnification under applicable law.

(d) In the event that Indemnitee, pursuant to this Section 7, seeks a judicial adjudication of Indemnitee’s rights under, or to recover damages for breach of, this Agreement, or to recover under any

directors’ and officers’ liability insurance policies maintained by the Company, the Company shall pay on Indemnitee’s behalf, in advance, any and all expenses (of the types described in the definition of Expenses in Section 13 of this Agreement) actually and reasonably incurred by Indemnitee in such judicial adjudication, regardless of whether Indemnitee ultimately is determined to be entitled to such indemnification, advancement of expenses or insurance recovery.

(e) The Company shall be precluded from asserting in any judicial proceeding commenced pursuant to this Section 7 that the procedures and presumptions of this Agreement are not valid, binding and enforceable and shall stipulate in any such court that the Company is bound by all the provisions of this Agreement. The Company shall indemnify Indemnitee against any and all Expenses and, if requested by Indemnitee, shall (within ten (10) days after receipt by the Company of a written request therefore) advance, to the extent not prohibited by law, such Expenses to Indemnitee, which are incurred by Indemnitee in connection with any action brought by Indemnitee for indemnification or advance of Expenses from the Company under this Agreement or under any directors’ and officers’ liability insurance policies maintained by the Company, regardless of whether Indemnitee ultimately is determined to be entitled to such indemnification, advancement of Expenses or insurance recovery, as the case may be.

8. Non-Exclusivity; Survival of Rights; Insurance; Subrogation.

(a) The rights of indemnification as provided by this Agreement shall not be deemed exclusive of any other rights to which Indemnitee may at any time be entitled under applicable law, the Charter, the By-laws of the Company, any agreement, a vote of stockholders or a resolution of directors, or otherwise. No amendment, alteration or repeal of this Agreement or of any provision hereof shall limit or restrict any right of Indemnitee under this Agreement in respect of any action taken or omitted by the Indemnitee in Indemnitee’s Corporate Status prior to such amendment, alteration or repeal. To the extent that a change in the Law, whether by statute or judicial decision, permits greater indemnification than would be afforded currently under the Charter and this Agreement, the Indemnitee shall enjoy by this Agreement the greater benefits so afforded by such change. No right or remedy herein conferred is intended to be exclusive of any other right or remedy, and every other right and remedy shall be cumulative and in addition to every other right and remedy given hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder, or otherwise, shall not prevent the concurrent assertion or employment of any other right or remedy.

(b) To the extent the Company maintains D & O Insurance and any other insurance policy or policies providing liability insurance for directors, officers, employees, or agents or fiduciaries of the Company or of any other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise which such person serves at the request of the Company, Indemnitee shall be covered by such policy or policies in accordance with its or their terms to the maximum extent of the coverage available for any such director, officer, employee, agent or fiduciary under such policy or policies. If at the time of the receipt of a notice of a claim pursuant to the terms hereof, the Company has D&O Insurance in effect, the Company shall give prompt notice of the commencement of such proceeding to the insurers in accordance with the procedures set forth in the respective policies. The Company shall thereafter take all necessary or desirable action to cause such insurers to pay, on behalf of the Indemnitee, all amounts payable as a result of such proceeding in accordance with the terms of such policies.

(c) In the event of any payment under this Agreement, the Company shall be subrogated to the extent of such payment to all of the rights of recovery of Indemnitee, who shall execute all papers required and take all action necessary to secure such rights, including execution of such documents as are necessary to enable the Company to bring suit to enforce such rights.

(d) The Company shall not be liable under this Agreement to make any payment of amounts otherwise indemnifiable hereunder if and to the extent that Indemnitee has otherwise actually received such payment under any insurance policy, contract, agreement or otherwise.

(e) The Company’s obligation to indemnify or advance Expenses hereunder to Indemnitee who is or was serving at the request of the Company as a director, officer, employee or agent of any other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise shall be reduced by any amount Indemnitee has actually received as indemnification or advancement of Expenses from such other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise.

9. Exception to Right of Indemnification. Notwithstanding any provision in this Agreement, the Company shall not be obligated under this Agreement to make any indemnity in connection with any claim made against Indemnitee:

(a) for which payment has actually been made to or on behalf of Indemnitee under any insurance policy or other indemnity provision, except with respect to any excess beyond the amount paid under any insurance policy or other indemnity provision; or

(b) for an accounting of profits made from the purchase and sale (or sale and purchase) by Indemnitee of securities of the Company within the meaning of Section 16(b) of the Securities Exchange Act of 1934, as amended, or similar provisions of state statutory law or common law; or

(c) in connection with any Proceeding (or any part of any Proceeding) initiated by Indemnitee, including any Proceeding (or any part of any Proceeding) initiated by Indemnitee against the Company or its directors, officers, employees or other indemnitees, unless (i) the Board authorized the Proceeding (or any part of any Proceeding) prior to its initiation or (ii) the Company provides the indemnification, in its sole discretion, pursuant to the powers vested in the Company under applicable law.

10. Duration of Agreement. All agreements and obligations of the Company contained herein shall continue during the period Indemnitee is an officer or director of the Company (or is or was serving at the request of the Company as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise) and shall continue thereafter so long as Indemnitee shall be subject to any Proceeding (or any proceeding commenced under Section 7 hereof) by reason of Indemnitee’s Corporate Status, whether or not Indemnitee is acting or serving in any such capacity at the time any Liability or Expense is incurred for which indemnification can be provided under this Agreement. This Agreement shall be binding upon and inure to the benefit of and be enforceable by the parties hereto and their respective successors (including any direct or indirect successor by purchase, merger, consolidation or otherwise to all or substantially all of the business or assets of the Company), assigns, spouses, heirs, executors and personal and legal representatives.

11. Security. To the extent requested by the Indemnitee and approved by the Board, the Company may at any time and from time to time provide security to the Indemnitee for the Company’s obligations hereunder through an irrevocable bank line of credit, funded trust or other collateral. Any such security, once provided to the Indemnitee, may not be revoked or released without the prior written consent of the Indemnitee.

12. Enforcement.

(a) The Company expressly confirms and agrees that it has entered into this Agreement and assumed the obligations imposed on it hereby in order to induce Indemnitee to serve as an officer or director of the

Company, and the Company acknowledges that Indemnitee is relying upon this Agreement in serving as an officer or director of the Company.

(b) This Agreement constitutes the entire agreement between the parties hereto with respect to the subject matter hereof and supersedes all prior agreements and understandings, oral, written and implied, between the parties hereto with respect to the subject matter hereof.

13. Definitions. For purposes of this Agreement:

(a) “Corporate Status” describes the status of a person or who is or was a director, officer, employee, agent, or fiduciary of the Company or of any other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise which such person is or was serving at the express written request of the Company.

(b) “Disinterested Director” means a director of the Company who is not and was not a party to the Proceeding in respect of which indemnification is sought by Indemnitee.

(c) “Enterprise” shall mean the Company and any other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise of which Indemnitee is or was serving at the express written request of the Company as a director, officer, employee, agent or fiduciary.

(d) “Expenses” shall include all reasonable attorneys’ fees, retainers, court costs, transcript costs, fees of experts, witness fees, travel expenses, duplicating costs, printing and binding costs, telephone charges, postage, delivery service fees, and all other disbursements or expenses of the types customarily incurred in connection with prosecuting, defending, preparing to prosecute or defend, investigating, participating, or being or preparing to be a witness in a Proceeding. Expenses also shall include Expenses incurred in connection with any appeal resulting from any Proceeding, including without limitation the premium, security for, and other costs relating to any cost bond, supersede as bond, or other appeal bond or its equivalent. Expenses, however, shall not include amounts paid in settlement by Indemnitee or the amount of judgments or fines against Indemnitee.

(e) “Independent Counsel” means a law firm, or a member of a law firm, that is experienced in matters of corporation law and neither presently is, nor in the past five years has been, retained to represent: (i) the Company or Indemnitee in any matter material to either such party (other than with respect to matters concerning the Indemnitee under this Agreement, or of other indemnitees under similar indemnification agreements), or (ii) any other party to the Proceeding giving rise to a claim for indemnification hereunder. Notwithstanding the foregoing, the term “Independent Counsel” shall not include any person who, under the applicable standards of professional conduct then prevailing, would have a conflict of interest in representing either the Company or Indemnitee in an action to determine Indemnitee’s rights under this Agreement. The Company agrees to pay the reasonable fees of the Independent Counsel referred to above and to fully indemnify such counsel against any and all Expenses and Liabilities arising out of or relating to this Agreement or its engagement pursuant hereto.

(f) “Liabilities” includes judgments, penalties, fines, and amounts paid in settlement.

(g) “Proceeding” includes any threatened, pending or completed action, suit, arbitration, alternate dispute resolution mechanism, investigation, inquiry, administrative hearing or any other actual, threatened or completed proceeding, whether brought by or in the right of the Company or otherwise and whether civil, criminal, administrative or investigative, in which Indemnitee was, is or will be involved as a party or otherwise, by reason of the fact that Indemnitee is or was a director of the Company, by reason of any action taken by Indemnitee or of any inaction on Indemnitee’s part while acting as an officer or

director of the Company, or by reason of the fact that Indemnitee is or was serving at the request of the Company as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other Enterprise; in each case whether or not Indemnitee is acting or serving in any such capacity at the time any Liability or Expense is incurred for which indemnification can be provided under this Agreement; including one pending on or before the date of this Agreement; but excluding one initiated by an Indemnitee pursuant to Section 7 of this Agreement to enforce Indemnitee’s rights under this Agreement.

14. Severability. If any provision or provisions of this Agreement shall be held by a court of competent jurisdiction to be invalid, void, illegal or otherwise unenforceable for any reason whatsoever: (a) the validity, legality and enforceability of the remaining provisions of this Agreement (including without limitation, each portion of any section of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall not in any way be affected or impaired thereby and shall remain enforceable to the fullest extent permitted by law; and (b) to the fullest extent possible, the provisions of this Agreement (including, without limitation, each portion of any section of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall be construed so as to give effect to the intent manifested thereby.

15. Modification and Waiver. No supplement, modification, termination or amendment of this Agreement shall be binding unless executed in writing by both of the parties hereto. No waiver of any of the provisions of this Agreement shall be deemed or shall constitute a waiver of any other provisions hereof (whether or not similar) nor shall such waiver constitute a continuing waiver.

16. Notice By Indemnitee. Indemnitee agrees promptly to notify the Company in writing upon being served with or otherwise receiving any summons, citation, subpoena, complaint, indictment, information or other document relating to any Proceeding or matter which may be subject to indemnification covered hereunder. The failure to so notify the Company shall not relieve the Company of any obligation which it may have to the Indemnitee under this Agreement or otherwise unless and only to the extent that such failure or delay materially prejudices the Company.

17. Notices. All notices, requests, demands and other communications hereunder shall be in writing and shall be deemed to have been duly given if (i) delivered by hand and receipted for by the party to whom said notice or other communication shall have been directed, or (ii) mailed by certified or registered mail with postage prepaid, on the third business day after the date on which it is so mailed:

(a) If to Indemnitee, to the address set forth below Indemnitee’s signature hereto.

If to the Company, to:

(b) OvaScience, Inc.

0 0xx Xxxxxx

Xxxxxxx, XX 00000

Attn: Chief Executive Officer

or to such other address as may have been furnished to Indemnitee by the Company or to the Company by Indemnitee, as the case may be.

18. Identical Counterparts. This Agreement may be executed in one or more counterparts, each of which shall for all purposes be deemed to be an original but all of which together shall constitute one and

the same Agreement. Only one such counterpart signed by the party against whom enforceability is sought needs to be produced to evidence the existence of this Agreement. This Agreement may also be executed and delivered by facsimile signature.

19. Headings. The headings of the paragraphs of this Agreement are inserted for convenience only and shall not be deemed to constitute part of this Agreement or to affect the construction thereof.

20. Governing Law. The parties agree that this Agreement shall be governed by, and construed and enforced in accordance with, the laws of the State of Delaware without application of the conflict of laws principles thereof. Any reference made in this Agreement to a judicial determination, decision or action of the Court of Chancery of the State of Delaware or another court of competent jurisdiction shall mean a final, non-appealable order.

21. Gender. Use of the masculine pronoun shall be deemed to include usage of the feminine and gender-neutral pronoun where appropriate.

IN WITNESS WHEREOF, the parties hereto have executed this Indemnification Agreement on and as of the day and year first above written.

	COMPANY

	OVASCIENCE, INC.


	By:	/s/ Xxxxxxxx Xxxxxx
		Name: Xxxxxxxx Xxxxxx
		Title: Senior Vice President, Finance


	Indemnitee


	/s/ Xxxxxxxxxxx Xxxxxxx
	Name: Xxxxxxxxxxx Xxxxxxx, M.D., M.B.A.


Address:	c/o OvaScience, Inc.
	0 Xxxxxx Xxxxxx
	Xxxxxxx, XX 00000

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SEPARATION AGREEMENT

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