Document:

EX-10.1

 Exhibit 10.1 

EMPLOYMENT AGREEMENT 

This Employment Agreement (“Agreement”) is made between Adicet Therapeutics, Inc., a Delaware corporation (the “Company”),
and Stewart Abbot (the “Executive”) and is contingent upon the closing (the “Closing”) of the transaction (the “Merger”) contemplated by that certain Agreement and Plan of Merger (the “Merger Agreement”) by
and among resTORbio, Inc. (“Parent”), Adicet Bio, Inc. (“Adicet Bio”) and the other parties thereto. Subject to Section 11, except with respect to the Employee Proprietary Information and Invention Assignment Agreement
between the Executive and Adicet Bio, dated May 23, 2018 (the “Prior Restrictive Covenants Agreement”) and the Equity Documents (as defined below), this Agreement supersedes in all respects all prior agreements between the Executive
and Adicet Bio regarding the subject matter herein, including without limitation (i) the offer letter between the Executive and Adicet Bio dated May 17, 2018, as amended by the Promotion Letter, dated February 25, 2019 and the
Amendment to Offer Letter, dated June 18, 2020 (together, the “Prior Agreement”) except as expressly preserved herein, and (ii) any offer letter, employment agreement or severance agreement. 

WHEREAS, Adicet Bio, Inc. will change its name to Adicet Therapeutics, Inc. post-Closing and Parent will change its name to Adicet Bio, Inc.
post-Closing. 
 WHEREAS, the Company desires to employ the Executive and the Executive desires to be employed by the Company beginning on
the effective date of the Closing of the Merger (the “Effective Date”) on the terms contained herein. 
 NOW, THEREFORE, in
consideration of the mutual covenants and agreements herein contained and other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties agree as follows: 

1.    Employment. 

(a)    Term. The term of this Agreement shall commence on the Effective Date and continue until terminated in
accordance with the provisions hereof (the “Term”). The Executive’s employment with the Company shall be “at will,” meaning that the Executive’s employment may be terminated by the Company or the Executive at any time
and for any reason subject to the terms of this Agreement. 
 (b)    Position and Duties. The Executive shall
serve as the Senior Vice President, Chief Operating Officer and Chief Scientific Officer of the Company and shall have such powers and duties as may from time to time be prescribed by the Chief Executive Officer of the Company (the “CEO”).
The Executive shall devote his full working time and efforts to the business and affairs of the Company. Notwithstanding the foregoing, the Executive may serve on other boards of directors, with the approval of the Governance Committee of the Board
of Directors of the Parent (the “Governance Committee” of the “Board”), or engage in religious, charitable or other community activities as long as such services and activities do not interfere with the Executive’s
performance of his duties to the Parent and the Company as provided in this Agreement. 

 2.    Compensation and Related Matters. 

(a)    Base Salary. The Executive’s initial base salary shall be paid at the rate of $400,000 per year. The
Executive’s base salary shall be subject to periodic review by the Compensation Committee of the Board (the “Compensation Committee”). The base salary in effect at any given time is referred to herein as “Base
Salary.” The Base Salary shall be payable in a manner that is consistent with the Company’s usual payroll practices for executive officers. The Executive’s salary and any other cash compensation may be provided through TriNet, Inc.
or, subject to 10 days’ prior written notice to Executive, another professional employer organization (a “PEO”). As a result of the Company’s arrangement with the PEO, the PEO will be considered the Executive’s
employer of record for these purposes for so long as that arrangement exists. While the PEO will have responsibility for the functions above, the Company retains responsibility for overseeing the Executive’s work and reviewing the
Executive’s performance, among other functions. 
 (b)    Incentive Compensation. The Executive shall be
eligible to receive cash incentive compensation as determined by the Board or the Compensation Committee from time to time. Commencing in calendar year 2021, the Executive’s initial target annual incentive compensation shall be forty
(40) percent of the Executive’s Base Salary; provided that any incentive compensation for calendar year 2020 will be prorated based on the Effective Date. The target annual incentive compensation in effect at any given time is referred to
herein as “Target Bonus.” The actual amount of the Executive’s annual incentive compensation, if any, shall be determined in the sole discretion of the Board or the Compensation Committee, subject to the terms of any applicable
incentive compensation plan that may be in effect from time to time. Except as otherwise provided herein, as may be provided by the Board or the Compensation Committee or as may otherwise be set forth in the applicable incentive compensation plan
the Executive must be employed by the Company on the day such incentive compensation is paid in order to earn or receive any incentive compensation. 

(c)    Expenses. The Executive shall be entitled to receive prompt reimbursement for all reasonable expenses
incurred by the Executive during the Term in performing services hereunder, in accordance with the policies and procedures then in effect and established by the Company for its executive officers; provided that the Executive’s commuting
expenses shall continue to be governed by Section 2.f of the Prior Agreement (the “Preserved Provision”). 

(d)    Other Benefits. The Executive shall be eligible to participate in or receive benefits under the
Company’s employee benefit plans in effect from time to time, subject to the terms of such plans. 
 (e)    Paid
Time Off. The Company’s current paid time off policy for executives is flexible and paid time off may be taken at such times and intervals as the Executive may determine, subject to the business needs of the Company and the terms and
conditions of any policies as may be in effect from time to time. 

  
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 (f)    Equity. The equity awards held by the Executive
shall be treated as described in the Merger Agreement and, subject to the terms and conditions of the Merger Agreement, shall continue to be governed by the terms and conditions of the applicable equity incentive plan(s) and the applicable award
agreement(s) governing the terms of such equity awards (collectively, the “Equity Documents”); provided, however, and notwithstanding anything to the contrary in the Equity Documents, Section 6(a)(ii) of this Agreement shall
apply in the event of a termination by the Company without Cause or by the Executive for Good Reason in either event within the Change in Control Period (as such terms are defined below). 

(g)    Indemnification. The Company shall indemnify the Executive to the extent that its officers, directors and
employees are entitled to indemnification pursuant to the Company’s Certificate of Incorporation and Bylaws for any acts or omissions by reason of being an officer or employee of the Company as of the Effective Date. At all times during the
Employment Term, the Company shall maintain in effect a director and officers liability insurance policy with the Executive as a covered officer. 

3.    Termination. The Executive’s employment hereunder may be terminated without any breach of this Agreement
under the following circumstances: 
 (a)    Death. The Executive’s employment hereunder shall terminate upon
death. 
 (b)    Disability. The Company may terminate the Executive’s employment if the Executive is
disabled and unable to perform or expected to be unable to perform the essential functions of the Executive’s then existing position or positions under this Agreement with or without reasonable accommodation for a period of 180 days (which need
not be consecutive) in any 12-month period. If any question shall arise as to whether during any period the Executive is disabled so as to be unable to perform the essential functions of the Executive’s
then existing position or positions with or without reasonable accommodation, the Executive may, and at the request of the Company shall, submit to the Company a certification in reasonable detail by a physician selected by the Company to whom the
Executive or the Executive’s guardian has no reasonable objection as to whether the Executive is so disabled or how long such disability is expected to continue, and such certification shall for the purposes of this Agreement be conclusive of
the issue. The Executive shall cooperate with any reasonable request of the physician in connection with such certification. If such question shall arise and the Executive shall fail to submit such certification, the Company’s determination of
such issue shall be binding on the Executive. Nothing in this Section 3(b) shall be construed to waive the Executive’s rights, if any, under existing law including, without limitation, the Family and Medical Leave Act of 1993, 29 U.S.C.
§2601 et seq. and the Americans with Disabilities Act, 42 U.S.C. §12101 et seq. 

(c)    Termination by the Company for Cause. The Company may terminate the Executive’s employment hereunder
for Cause. For purposes of this Agreement, “Cause” shall mean: (i) conduct by the Executive constituting a material act of misconduct in connection with the performance of his duties, including, without limitation, misappropriation of
funds or property of the Company, Parent or any of its or their subsidiaries or affiliates other than the occasional, customary and de minimis use of Company or Parent property for personal purposes; (ii) the commission by the Executive of acts
satisfying the elements of (A) any felony or (B) a misdemeanor involving moral turpitude, deceit, dishonesty or fraud; (iii) any misconduct by the 

  
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Executive, regardless of whether or not in the course of the Executive’s employment, that would reasonably be expected to result in material injury or reputational harm to the Company,
Parent or any of its or their subsidiaries or affiliates if the Executive were to continue to be employed in the same position; (iv) continued willful nonperformance by the Executive of his material duties hereunder (other than by reason of the
Executive’s physical or mental illness, incapacity or disability) which, to the extent it is curable by the Executive, is not cured within thirty (30) after written notice thereof is given to the Executive by the CEO; (v) a breach by
the Executive of the Restrictive Covenants Agreement or any of the provisions contained in Section 8 of this Agreement; (vi) a material violation by the Executive of the Company’s or Parent’s written employment policies; or
(vii) failure to cooperate with a bona fide internal investigation or an investigation by regulatory or law enforcement authorities, after being instructed by the Company or Parent to cooperate, or the willful destruction or failure to preserve
documents or other materials known to be relevant to such investigation or the inducement of others to fail to cooperate or to produce documents or other materials in connection with such investigation. 

(d)    Termination by the Company without Cause. The Company may terminate the Executive’s employment
hereunder at any time without Cause. Any termination by the Company of the Executive’s employment under this Agreement which does not constitute a termination for Cause under Section 3(c) and does not result from the death or disability of
the Executive under Section 3(a) or (b) shall be deemed a termination without Cause. 
 (e)    Termination
by the Executive. The Executive may terminate his employment hereunder at any time for any reason, including for Good Reason. For purposes of this Agreement, “Good Reason” shall mean that the Executive has complied with the “Good
Reason Process” (hereinafter defined) following the occurrence of any of the following events: (i) a material diminution in the Executive’s responsibilities, authority or duties provided changes to the Executive’s
responsibilities, authority or duties prior to a Change in Control that are made in the good faith discretion of the Company’s CEO as part of the Company’s evolving business needs and strategy shall not be a Good Reason occurrence;
(ii) a material diminution in the Executive’s Base Salary except for across-the-board salary reductions based on the Company’s or Parent’s financial
performance similarly affecting all or substantially all senior management employees of the Company or Parent; (iii) a material change in the geographic location at which the Executive provides services to the Company such that there is an
increase of at least thirty (30) miles of driving distance to such location from the Executive’s principal residence as of such change; or (iv) the material breach of this Agreement by the Company. “Good Reason Process”
shall mean that (i) the Executive reasonably determines in good faith that a “Good Reason” condition has occurred; (ii) the Executive notifies the Company in writing of the first occurrence of the Good Reason condition within 60
days of the first occurrence of such condition; (iii) the Executive cooperates in good faith with the Company’s efforts, for a period not less than 30 days following such notice (the “Cure Period”), to remedy the condition;
(iv) notwithstanding such efforts, the Good Reason condition continues to exist; and (v) the Executive terminates his employment within 180 days after the end of the Cure Period. 

  
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 4.    Matters Related to Termination. 

(a)    Notice of Termination. Except for termination as specified in Section 3(a), any termination of the
Executive’s employment by the Company or any such termination by the Executive shall be communicated by written Notice of Termination to the other party hereto. For purposes of this Agreement, a “Notice of Termination” shall mean a
notice which shall indicate the specific termination provision in this Agreement relied upon. 
 (b)    Date of
Termination. “Date of Termination” shall mean: (i) if the Executive’s employment is terminated by death, the date of death; (ii) if the Executive’s employment is terminated on account of disability under
Section 3(b) or by the Company for Cause under Section 3(c), the date on which Notice of Termination is given; (iii) if the Executive’s employment is terminated by the Company without Cause under Section 3(d), the date on
which a Notice of Termination is given or the date otherwise specified by the Company in the Notice of Termination; (iv) if the Executive’s employment is terminated by the Executive under Section 3(e) other than for Good Reason, 30
days after the date on which a Notice of Termination is given, and (v) if the Executive’s employment is terminated by the Executive under Section 3(e) for Good Reason, the date on which a Notice of Termination is given after the end
of the Cure Period. Notwithstanding the foregoing, in the event that the Executive gives a Notice of Termination to the Company, the Company may unilaterally accelerate the Date of Termination and such acceleration shall not result in a termination
by the Company for purposes of this Agreement. 
 (c)    Accrued Obligations. If the Executive’s employment
with the Company is terminated for any reason, the Company shall pay or provide to the Executive (or to the Executive’s authorized representative or estate) (i) any Base Salary earned through the Date of Termination;
(ii) unpaid expense reimbursements (subject to, and in accordance with, Section 2(c) of this Agreement); and (iii) any vested benefits the Executive may have under any employee benefit plan of the Company through the Date of
Termination, which vested benefits shall be paid and/or provided in accordance with the terms of such employee benefit plans (collectively, the “Accrued Obligations”). 

(d)    Resignation of All Other Positions. To the extent applicable, the Executive shall be deemed to have resigned
from all officer and board member positions that the Executive holds with the Company or any of its respective subsidiaries and affiliates upon the termination of the Executive’s employment for any reason. The Executive shall execute any
documents in reasonable form as may be requested to confirm or effectuate any such resignations. 
 5.    Severance
Pay and Benefits Upon Termination by the Company without Cause    or by the Executive for Good Reason Outside the Change in Control Period. If the Executive’s employment is terminated by the Company without
Cause as provided in Section 3(d) or the Executive terminates employment for Good Reason as provided in Section 3(e), in each case outside of the Change in Control Period (as defined below), then, in addition to the Accrued
Obligations, subject to the Executive signing a separation agreement containing, among other provisions, a general release of claims in favor of the Company and related persons and entities, including the PEO, a reaffirmation of the Executive’s
Continuing Obligations (as defined below), confidentiality, return of property and non-disparagement, in a form and manner satisfactory to the Company (the “Separation Agreement and Release”) and the
Separation Agreement and Release becoming irrevocable and fully effective, all within 60 days after the Date of Termination (or such shorter time period provided in the Separation Agreement and Release): 

(a)    the Company shall pay the Executive an amount equal to nine (9) months of the Executive’s Base
Salary (the “Severance Amount”); and 

  
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 (b)    the Company shall pay any unpaid bonus earned for the year
preceding the date of Executive’s employment termination, payable at the time it otherwise would have been paid had the Executive’s employment with the Company not terminated; and 

(c)    subject to the Executive’s copayment of premium amounts at the applicable active employees’ rate and the
Executive’s proper election to receive benefits under the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”), the Company shall pay to the Executive a monthly cash payment (including a gross up payment
to account for applicable taxes and withholdings) equal to the monthly employer contribution that the Company would have made to provide health insurance to the Executive and covered dependents if the Executive had remained employed by the Company
until the earliest of (A) the nine (9) month anniversary of the Date of Termination; (B) the date that the Executive becomes eligible for group medical plan benefits under any other employer’s group medical plan; or (C) the
cessation of the Executive’s health continuation rights under COBRA. 
 The amounts payable under Section 5(a) and (c), to the extent taxable,
shall be paid out in substantially equal installments in accordance with the Company’s payroll practice over nine (9) months commencing within 60 days after the Date of Termination; provided, however, that if the 60-day period begins in one calendar year and ends in a second calendar year, such payments, to the extent they qualify as “non-qualified deferred compensation”
within the meaning of Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”), shall begin to be paid in the second calendar year by the last day of such 60-day period;
provided, further, that the initial payment shall include a catch-up payment to cover amounts retroactive to the day immediately following the Date of Termination. Each payment pursuant to this Agreement is
intended to constitute a separate payment for purposes of Treasury Regulation Section 1.409A-2(b)(2). 

6.    Severance Pay and Benefits Upon Termination by the Company without Cause or by the Executive for Good Reason
within the Change in Control Period. The provisions of this Section 6 shall apply in lieu of, and expressly supersede, the provisions of Section 5 if (i) the Executive’s employment is terminated either (a) by the Company
without Cause as provided in Section 3(d), or (b) by the Executive for Good Reason as provided in Section 3(e), and (ii) the Date of Termination occurs on or within 12 months after the occurrence of the first event constituting a
Change in Control (such period, the “Change in Control Period”) following the Effective Date. These provisions shall terminate and be of no further force or effect after the Change in Control Period. 

(a)    If the Executive’s employment is terminated by the Company without Cause as provided in Section 3(d) or
the Executive terminates employment for Good Reason as provided in Section 3(e) and in each case the Date of Termination occurs during the Change in Control Period, then, in addition to the Accrued Obligations, and subject to the signing of the
Separation Agreement and Release by the Executive and the Separation Agreement and Release becoming fully effective, all within the time frame set forth in the Separation Agreement and Release but in no event more than 60 days after the Date of
Termination: 

  
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 (i)    the Company shall pay the Executive a lump sum in
cash in an amount equal to one (1) times the sum of (A) the Executive’s then-current Base Salary (or the Executive’s Base Salary in effect immediately prior to the Change in Control, if higher) plus (B) the
Executive’s Target Bonus for the then-current year (or the Executive’s Target Bonus in effect immediately prior to the Change in Control, if higher) and 

(ii)    the Company shall pay any unpaid bonus earned for the year preceding the date of Executive’s
employment termination, payable at the time it otherwise would have been paid had the Executive’s employment with the Company not terminated, and 

(iii)    notwithstanding anything to the contrary in any applicable option agreement or other stock-based
award agreement, all stock options and other stock-based awards held by the Executive that are subject solely to time-based vesting (the “Time-Based Equity Awards”) shall immediately accelerate and become fully vested and exercisable or
nonforfeitable as of the later of (i) the Date of Termination or (ii) the effective date of the Separation Agreement and Release (the “Accelerated Vesting Date”), provided in order to effectuate the accelerated vesting
contemplated by this subsection, the unvested portion of the Executive’s options that would otherwise be forfeited on the Date of Termination will be delayed until the earlier of (A) the effective date of the Separation Agreement Release
(at which time acceleration will occur), or (B) the date that the Separation Agreement and Release can no longer become fully effective (at which time the unvested Time-Based Equity Awards will be terminated or forfeited). Notwithstanding the
foregoing, no additional time-based vesting of the Time-Based Equity Awards shall occur during the period between the Date of Termination and the Accelerated Vesting Date; and 

(iv)    subject to the Executive’s copayment of premium amounts at the applicable active
employees’ rate and the Executive’s proper election to receive benefits under COBRA, the Company shall pay to the Executive a monthly cash payment (including a gross up payment to account for applicable taxes and withholdings) equal to the
monthly employer contribution that the Company would have made to provide health insurance to the Executive and covered dependents if the Executive had remained employed by the Company until the earliest of (A) the twelve (12) month
anniversary of the Date of Termination; (B) the date that the Executive becomes eligible for group medical plan benefits under any other employer’s group medical plan; or (C) the cessation of the Executive’s health continuation
rights under COBRA. 
 The amounts payable under this Section 6(a), to the extent taxable, shall be paid or commence to be paid within 60 days after
the Date of Termination; provided, however, that if the 60-day period begins in one calendar year and ends in a second calendar year, such payments to the extent they qualify as
“non-qualified deferred compensation” within the meaning of Section 409A of the Code, shall be paid or commence to be paid in the second calendar year by the last day of such 60-day period. 

  
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 (b)    Additional Limitation. 

(i)    Anything in this Agreement to the contrary notwithstanding, in the event that the amount of any
compensation, payment or distribution by the Company to or for the benefit of the Executive, whether paid or payable or distributed or distributable pursuant to the terms of this Agreement or otherwise, calculated in a manner consistent with
Section 280G of the Code, and the applicable regulations thereunder (the “Aggregate Payments”), would be subject to the excise tax imposed by Section 4999 of the Code, then the Aggregate Payments shall be reduced (but not below
zero) so that the sum of all of the Aggregate Payments shall be $1.00 less than the amount at which the Executive becomes subject to the excise tax imposed by Section 4999 of the Code; provided that such reduction shall only occur if it would
result in the Executive receiving a higher After Tax Amount (as defined below) than the Executive would receive if the Aggregate Payments were not subject to such reduction. In such event, the Aggregate Payments shall be reduced in the following
order, in each case, in reverse chronological order beginning with the Aggregate Payments that are to be paid the furthest in time from consummation of the transaction that is subject to Section 280G of the Code: (1) cash payments not
subject to Section 409A of the Code; (2) cash payments subject to Section 409A of the Code; (3) equity-based payments and acceleration; and (4) non-cash forms of benefits; provided
that in the case of all the foregoing Aggregate Payments all amounts or payments that are not subject to calculation under Treas. Reg. §1.280G-1, Q&A-24(b) or
(c) shall be reduced before any amounts that are subject to calculation under Treas. Reg. §1.280G-1, Q&A-24(b) or (c). 

(ii)    For purposes of this Section 6(b), the “After Tax Amount” means the amount of the
Aggregate Payments less all federal, state, and local income, excise and employment taxes imposed on the Executive as a result of the Executive’s receipt of the Aggregate Payments. For purposes of determining the After Tax Amount, the Executive
shall be deemed to pay federal income taxes at the highest marginal rate of federal income taxation applicable to individuals for the calendar year in which the determination is to be made, and state and local income taxes at the highest marginal
rates of individual taxation in each applicable state and locality, net of the maximum reduction in federal income taxes which could be obtained from deduction of such state and local taxes. 

(iii)    The determination as to whether a reduction in the Aggregate Payments shall be made pursuant to
Section 6(b)(i) shall be made by a nationally recognized accounting firm selected by the Company (the “Accounting Firm”), which shall provide detailed supporting calculations both to the Company and the Executive within 15 business
days of the Date of Termination, if applicable, or at such earlier time as is reasonably requested by the Company or the Executive. Any determination by the Accounting Firm shall be binding upon the Company and the Executive. 

(c)    Definitions. For purposes of this Section 6, the following terms shall have the following meanings:

 “Change in Control” shall mean any of the following: 

(i)    any “person,” as such term is used in Sections 13(d) and 14(d) of the Securities Exchange
Act of 1934, as amended (the “Act”), any of its subsidiaries, or 

  
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any trustee, fiduciary or other person or entity holding securities under any employee benefit plan or trust of Parent or any of its subsidiaries), together with all “affiliates” and
“associates” (as such terms are defined in Rule 12b-2 under the Act) of such person, shall become the “beneficial owner” (as such term is defined in Rule
13d-3 under the Act), directly or indirectly, of securities of Parent representing 50 percent or more of the combined voting power of Parent’s then outstanding securities having the right to vote in
an election of the Board (“Voting Securities”) (in such case other than as a result of an acquisition of securities directly from Parent); or 

(ii)    the date a majority of the members of the Board is replaced during any 12-month period by directors whose appointment or election is not endorsed by a majority of the members of the Board before the date of the appointment or election; or 

(iii)    the consummation of (A) any consolidation or merger of Parent where the stockholders of
Parent, immediately prior to the consolidation or merger, would not, immediately after the consolidation or merger, beneficially own (as such term is defined in Rule 13d-3 under the Act), directly or
indirectly, shares representing in the aggregate more than 50 percent of the voting shares of Parent issuing cash or securities in the consolidation or merger (or of its ultimate parent corporation, if any), or (B) any sale or other
transfer (in one transaction or a series of transactions contemplated or arranged by any party as a single plan) of all or substantially all of the assets of Parent. 

Notwithstanding the foregoing, a “Change in Control” shall not be deemed to have occurred for purposes of the foregoing clause
(i) solely as the result of an acquisition of securities by Parent which, by reducing the number of shares of Voting Securities outstanding, increases the proportionate number of Voting Securities beneficially owned by any person to
50 percent or more of the combined voting power of all of the then outstanding Voting Securities; provided, however, that if any person referred to in this sentence shall thereafter become the beneficial owner of any additional shares of Voting
Securities (other than pursuant to a stock split, stock dividend, or similar transaction or as a result of an acquisition of securities directly from Parent) and immediately thereafter beneficially owns 50 percent or more of the combined voting
power of all of the then outstanding Voting Securities, then a “Change in Control” shall be deemed to have occurred for purposes of the foregoing clause (i). 

7.    Section 409A. 

(a)    Anything in this Agreement to the contrary notwithstanding, if at the time of the Executive’s separation from
service within the meaning of Section 409A of the Code, the Company determines that the Executive is a “specified employee” within the meaning of Section 409A(a)(2)(B)(i) of the Code, then to the extent any payment or benefit
that the Executive becomes entitled to under this Agreement or otherwise on account of the Executive’s separation from service would be considered deferred compensation otherwise subject to the 20 percent additional tax imposed pursuant to
Section 409A(a) of the Code as a result of the application of Section 409A(a)(2)(B)(i) of the Code, such payment shall not be payable and such benefit shall not be provided until the date that is the earlier of (A) six months and one
day after the Executive’s separation from service, or (B) the Executive’s death. If any such delayed cash payment is otherwise payable on an installment basis, the first payment shall include a
catch-up 

  
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payment covering amounts that would otherwise have been paid during the six-month period but for the application of this provision, and the balance of the
installments shall be payable in accordance with their original schedule. 
 (b)    All
in-kind benefits provided and expenses eligible for reimbursement under this Agreement shall be provided by the Company or incurred by the Executive during the time periods set forth in this Agreement. All
reimbursements shall be paid as soon as administratively practicable, but in no event shall any reimbursement be paid after the last day of the taxable year following the taxable year in which the expense was incurred. The amount of in-kind benefits provided or reimbursable expenses incurred in one taxable year shall not affect the in-kind benefits to be provided or the expenses eligible for reimbursement
in any other taxable year (except for any lifetime or other aggregate limitation applicable to medical expenses). Such right to reimbursement or in-kind benefits is not subject to liquidation or exchange for
another benefit. 
 (c)    To the extent that any payment or benefit described in this Agreement constitutes “non-qualified deferred compensation” under Section 409A of the Code, and to the extent that such payment or benefit is payable upon the Executive’s termination of employment, then such payments
or benefits shall be payable only upon the Executive’s “separation from service.” The determination of whether and when a separation from service has occurred shall be made in accordance with the presumptions set forth in Treasury
Regulation Section 1.409A-1(h). 
 (d)    The parties intend that this
Agreement will be administered in accordance with Section 409A of the Code. To the extent that any provision of this Agreement is ambiguous as to its compliance with Section 409A of the Code, the provision shall be read in such a manner so
that all payments hereunder comply with Section 409A of the Code. Each payment pursuant to this Agreement or the Restrictive Covenants Agreement is intended to constitute a separate payment for purposes of Treasury Regulation Section 1.409A-2(b)(2). The parties agree that this Agreement may be amended, as reasonably requested by either party, and as may be necessary to fully comply with Section 409A of the Code and all related
rules and regulations in order to preserve the payments and benefits provided hereunder without additional cost to either party. 

(e)    The Company makes no representation or warranty and shall have no liability to the Executive or any other person if
any provisions of this Agreement are determined to constitute deferred compensation subject to Section 409A of the Code but do not satisfy an exemption from, or the conditions of, such Section. 

8.    Continuing Obligations.  

(a)    Restrictive Covenants Agreement. As a condition of employment, the Executive is required to enter into the
Employee Confidentiality, Assignment and Nonsolicitation Agreement, attached hereto as Exhibit A (the “Restrictive Covenants Agreement”). For the avoidance of doubt, the Restrictive Covenants Agreement is supplemental to the
Prior Restrictive Covenants Agreement, which remains in full force and effect. For purposes of this Agreement, the obligations in this Section 8 and those that arise in the Restrictive Covenants Agreement, the Prior Restrictive Covenants
Agreement and any other agreement relating to confidentiality, assignment of inventions, or other restrictive covenants shall collectively be referred to as the “Continuing Obligations.” 

  
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 (b)    Third-Party Agreements and Rights. The Executive hereby
confirms that the Executive is not bound by the terms of any agreement with any previous employer or other party which restricts in any way the Executive’s use or disclosure of information, other than confidentiality restrictions (if any), or
the Executive’s engagement in any business. The Executive represents to the Company that the Executive’s execution of this Agreement, the Executive’s employment with the Company and the performance of the Executive’s proposed
duties for the Company will not violate any obligations the Executive may have to any such previous employer or other party. In the Executive’s work for the Company, the Executive will not disclose or make use of any information in violation of
any agreements with or rights of any such previous employer or other party, and the Executive will not bring to the premises of the Company any copies or other tangible embodiments of non-public information
belonging to or obtained from any such previous employment or other party. 
 (c)    Litigation and Regulatory
Cooperation. During and after the Executive’s employment, the Executive shall cooperate fully with the Company in (i) the defense or prosecution of any claims or actions now in existence or which may be brought in the future against or
on behalf of the Company which relate to events or occurrences that transpired while the Executive was employed by the Company, and (ii) the investigation, whether internal or external, of any matters about which the Company believes the
Executive may have knowledge or information. The Executive’s full cooperation in connection with such claims, actions or investigations shall include, but not be limited to, being available to meet with counsel to answer questions or to prepare
for discovery or trial and to act as a witness on behalf of the Company at mutually convenient times. During and after the Executive’s employment, the Executive also shall cooperate fully with the Company in connection with any investigation or
review of any federal, state or local regulatory authority as any such investigation or review relates to events or occurrences that transpired while the Executive was employed by the Company. The Company shall reimburse the Executive for any
reasonable out-of-pocket expenses, including, but not limited to travel and lodging expenses, incurred in connection with the Executive’s performance of obligations
pursuant to this Section 8(c). 
 (d)    Relief. The Executive agrees that it would be difficult to measure
any damages caused to the Company which might result from any breach by the Executive of the Continuing Obligations, and that in any event money damages would be an inadequate remedy for any such breach. Accordingly, the Executive agrees that
if the Executive breaches, or proposes to breach, any portion of the Continuing Obligations, the Company shall be entitled, in addition to all other remedies that it may have, to an injunction or other appropriate equitable relief to restrain any
such breach without showing or proving any actual damage to the Company. 
 9.    Arbitration of Disputes. 

(a)    Arbitration Generally. Any controversy or claim arising out of or relating to this Agreement or the breach
thereof or otherwise arising out of the Executive’s employment or the termination of that employment (including, without limitation, any claims of unlawful 

  
 11 

 
employment discrimination or retaliation, whether based on race, religion, national origin, sex, gender, age, disability, sexual orientation, or any other protected class under applicable law)
shall, to the fullest extent permitted by law, be settled by arbitration in any forum and form agreed upon by the parties or, in the absence of such an agreement, under the auspices of JAMS in San Francisco, California in accordance with the JAMS
Employment Arbitration Rules, including, but not limited to, the rules and procedures applicable to the selection of arbitrators. The Executive understands that the Executive may only bring such claims in the Executive’s individual capacity,
and not as a plaintiff or class member in any purported class proceeding or any purported representative proceeding.    The Executive further understands that, by signing this Agreement, the Company and the Executive are giving
up any right they may have to a jury trial on all claims they may have against each other. Judgment upon the award rendered by the arbitrator may be entered in any court having jurisdiction thereof. This Section 9 shall be specifically
enforceable. Notwithstanding the foregoing, this Section 9 shall not preclude either party from pursuing a court action for the sole purpose of obtaining a temporary restraining order or a preliminary injunction in circumstances in which such
relief is appropriate, including without limitation relief sought under the Restrictive Covenants Agreement; provided that any other relief shall be pursued through an arbitration proceeding pursuant to this Section 9. 

(b)    Arbitration Fees and Costs. The Executive shall be required to pay an arbitration fee to initiate any
arbitration equal to what the Executive would be charged as a first appearance fee in court. The Company shall advance the remaining fees and costs of the arbitrator. However, to the extent permissible under the law, and following the
arbitrator’s ruling on the matter, the arbitrator may rule that the arbitrator’s fees and costs be distributed in an alternative manner. Each party shall pay its own costs and attorneys’ fees, if any. If, however, any party prevails
on a statutory or contractual claim that affords the prevailing party attorneys’ fees (including pursuant to this Agreement), the arbitrator may award attorneys’ fees to the prevailing party to the extent permitted by law. 

10.    Consent to Jurisdiction. The parties hereby consent to the jurisdiction of the state and federal courts of
the State of California. Accordingly, with respect to any such court action, the Executive (a) submits to the exclusive personal jurisdiction of such courts; (b) consents to service of process; and (c) waives any other
requirement (whether imposed by statute, rule of court, or otherwise) with respect to personal jurisdiction or service of process. 

11.    Integration. This Agreement constitutes the entire agreement between the parties with respect to the subject
matter hereof and supersedes all prior agreements between the parties concerning such subject matter including the Prior Agreement, provided that the Prior Restrictive Covenants Agreement, the Preserved Provision, the Restrictive Covenants Agreement
and the Equity Documents remain in full force and effect. 
 12.    Withholding; Tax Effect. All payments made by
the Company to the Executive under this Agreement shall be net of any tax or other amounts required to be withheld by the Company under applicable law. Nothing in this Agreement shall be construed to require the Company to make any payments to
compensate the Executive for any adverse tax effect associated with any payments or benefits or for any deduction or withholding from any payment or benefit. 

  
 12 

 13.    Successors and Assigns. Neither the Executive nor the
Company may make any assignment of this Agreement or any interest in it, by operation of law or otherwise, without the prior written consent of the other; provided, however, that the Company may assign its rights and obligations under this Agreement
(including the Restrictive Covenants Agreement) without the Executive’s consent to any affiliate or to any person or entity with whom the Company shall hereafter effect a reorganization or consolidation, into which the Company merges or to whom
it transfers all or substantially all of its properties or assets; provided further that if the Executive remains employed or becomes employed by the Company, the purchaser or any of their affiliates in connection with any such transaction, then the
Executive shall not be entitled to any payments, benefits or vesting pursuant to Section 5 or pursuant to Section 6 of this Agreement solely as a result of such transaction. This Agreement shall inure to the benefit of and be binding upon
the Executive and the Company, and each of the Executive’s and the Company’s respective successors, executors, administrators, heirs and permitted assigns. In the event of the Executive’s death after the Executive’s termination
of employment but prior to the completion by the Company of all payments due to the Executive under this Agreement, the Company shall continue such payments to the Executive’s beneficiary designated in writing to the Company prior to the
Executive’s death (or to the Executive’s estate, if the Executive fails to make such designation). 

14.    Enforceability. If any portion or provision of this Agreement (including, without limitation, any portion or
provision of any section of this Agreement) shall to any extent be declared illegal or unenforceable by a court of competent jurisdiction, then the remainder of this Agreement, or the application of such portion or provision in circumstances other
than those as to which it is so declared illegal or unenforceable, shall not be affected thereby, and each portion and provision of this Agreement shall be valid and enforceable to the fullest extent permitted by law. 

15.    Survival. The provisions of this Agreement shall survive the termination of this Agreement and/or the
termination of the Executive’s employment to the extent necessary to effectuate the terms contained herein. 

16.    Waiver. No waiver of any provision hereof shall be effective unless made in writing and signed by the
waiving party. The failure of any party to require the performance of any term or obligation of this Agreement, or the waiver by any party of any breach of this Agreement, shall not prevent any subsequent enforcement of such term or obligation or be
deemed a waiver of any subsequent breach. 
 17.    Notices. Any notices, requests, demands and other
communications provided for by this Agreement shall be sufficient if in writing and delivered in person or sent by a nationally recognized overnight courier service or by registered or certified mail, postage prepaid, return receipt requested, to
the Executive at the last address the Executive has filed in writing with the Company or, in the case of the Company, at its main offices, attention of the Board. 

18.    Amendment. This Agreement may be amended or modified only by a written instrument signed by the Executive
and by a duly authorized representative of the Company. 

  
 13 

 19.    Effect on Other Plans and Agreements. An election by the
Executive to resign for Good Reason under the provisions of this Agreement shall not be deemed a voluntary termination of employment by the Executive for the purpose of interpreting the provisions of any of the Company’s benefit plans, programs
or policies. Nothing in this Agreement shall be construed to limit the rights of the Executive under the Company’s benefit plans, programs or policies except as otherwise provided in Section 8 hereof, and except that the Executive shall
have no rights to any severance benefits under any Company severance pay plan, offer letter or otherwise. In the event that the Executive is party to an agreement with the Company providing for payments or benefits under such plan or agreement and
under this Agreement, the terms of this Agreement shall govern and the Executive may receive payment under this Agreement only and not both. Further, Section 5 and Section 6 of this Agreement are mutually exclusive and in no event shall
the Executive be entitled to payments or benefits pursuant to both Section 5 and Section 6 of this Agreement. 

20.    Governing Law. This is a California contract and shall be construed under and be governed in all respects by
the laws of the State of California, without giving effect to the conflict of laws principles thereof. With respect to any disputes concerning federal law, such disputes shall be determined in accordance with the law as it would be interpreted and
applied by the United States Court of Appeals for the 9th Circuit. 

21.    Counterparts. This Agreement may be executed in any number of counterparts, each of which when so executed
and delivered shall be taken to be an original; but such counterparts shall together constitute one and the same document. 
 IN WITNESS
WHEREOF, the parties have executed this Agreement effective on the Effective Date. 
  

			
	 ADICET THERAPEUTICS,

INC./RESTORBIO, INC.

	
	 /s/ Chen Schor

	By:	 	Chen Schor
	Its:	 	Chief Executive Officer
	
	STEWART ABBOT
	
	 /s/ Stewart Abbot

	Stewart Abbot

  
 14 

 [Exhibit A 

Restrictive Covenants Agreement]Document

Exhibit 10.1
HPT CY TRS, Inc.
HPT TRS MRP, Inc.
Two Newton Place
255 Washington Street, Suite 300
Newton, Massachusetts 02458

October 6, 2020

VIA OVERNIGHT COURIER AND E-MAIL

Marriott International, Inc.
Marriott Hotel Services, Inc.
Residence Inn by Marriott, LLC
Courtyard Management Corporation
SpringHill SMC, LLC
TownePlace Management, LLC
Essex House Condominium Corporation
c/o Marriott International, Inc.
10400 Fernwood Road
Bethesda, Maryland 20817
Attn: Law Department 52/923 – Hotel Operations

Marriott International, Inc.
10400 Fernwood Road
Bethesda, Maryland 20817
Attn: Department 51/911 – Lodging Financial Analysis

Re:      SVC89 Portfolio Agreements:  Notice of Termination 

Ladies and Gentlemen:

Reference is made to the Management Agreements and the Pooling Agreement identified on Schedule 1 attached hereto (collectively, the “SVC89 Portfolio Agreements”).  Capitalized terms used and not otherwise defined in this letter shall have the meanings given such terms in the SVC89 Portfolio Agreements, as applicable.   
 
In response to our letter requiring payment of the Post-Guaranty Termination Threshold on or before October 5, 2020, we received your letter, dated September 30, 2020, alleging that Tenants may not require payment of the Post-Guaranty Termination Threshold before the end of a Fiscal Year.  We disagree with this interpretation of the SVC89 Portfolio Agreements, among other reasons, because regular monthly payments of Tenant’s Priority are required pursuant to the terms of the SVC89 Portfolio Agreements and a Manager Funding Termination Event can exist under Section 3.02.C of the Management Agreements prior to the end of a Fiscal Year if Managers do not fund at least eighty percent (80%) of the Tenant’s Priority then due on a cumulative basis during such Fiscal Year.  Accordingly, Managers’ failure to fund the Post-Guaranty Termination Threshold by October 5, 2020 resulted in a Manager Funding Termination Event.  
 
We also note that, in prior conversations, representatives of Marriott have told us that (a) the projected Aggregate Operating Profit (Loss) from the portfolio will not be sufficient to 
    

Marriott International, Inc. et. al.
October 6, 2020
Page 2

fund up to the Post-Guaranty Termination Threshold for Fiscal Year 2020 and (b) Marriott and Managers do not intend to fund up to the Post-Guaranty Termination Threshold for any shortfalls in Aggregate Tenant’s Priority for the 2020 Fiscal Year.
Given (a) that a Manager Funding Termination Event under the SVC89 Portfolio Agreements has occurred and (b) Marriott’s prior oral statements that it will not fund up to the applicable Post-Guaranty Termination Threshold, SVC elects to terminate the SVC89 Portfolio Agreements as of January 31, 2021.  However, SVC believes that it is in the best interests of Marriott, SVC and hotel-level employees to ensure an orderly transition of the hotels; accordingly, if you believe a different date(s) would better facilitate an orderly transition, please contact us to discuss.   
This letter shall not be deemed as a waiver of any defaults that may now or hereafter exist under the SVC89 Portfolio Agreements or any related agreements, or any other rights or remedies that Tenants or its affiliates might be entitled to exercise under the SVC89 Portfolio Agreements or any related agreement, at law and/or in equity.
Sincerely yours,

HPT CY TRS, INC.
HPT TRS MRP, INC.

By:/s/ John G. Murray        
     John G. Murray
     President

cc:      Ms. Julie Bowen (via e-mail at julie.bowen@marriott.com)
Ms. Veronica Ladejobi (via e-mail at veronica.ladejobi@marriott.com) 

    

SCHEDULE 1 

SVC89 PORTFOLIO AGREEMENTS

1.Management Agreement, dated as of December 31, 2019 (the “Execution Date”) but to become effective as of January 1, 2020 (the “Effective Date”), between HPT TRS MRP, Inc.(“MRP Tenant”) and Essex House Condominium Corporation (“Kauai Manager”) for the Kauai hotel.

2.Second Amended and Restated Management Agreement, dated as of the Execution Date but to become effective as of the Effective Date, between MRP Tenant and Marriott Hotel Services, Inc. (“Full Service Manager”) for Marriott (full service) hotels.

3.Second Amended and Restated Management Agreement, dated as of the Execution Date but to become effective as of the Effective Date, between MRP Tenant and HPT CY TRS, Inc. (“CY Tenant”) and Courtyard Management Corporation (“CY Manager”) for Courtyard hotels.

4.Second Amended and Restated Management Agreement, dated as of the Execution Date but to become effective as of the Effective Date, between MRP Tenant and Residence Inn by Marriott, LLC (“RI Manager”) for the Residence Inn hotels.

5.Second Amended and Restated Management Agreement, dated as of the Execution Date but to become effective as of the Effective Date, between MRP Tenant. and Springhill SMC, LLC (“SH Manager”) for the SpringHill Suites hotels.

6.Second Amended and Restated Management Agreement, dated as of the Execution Date but to become effective as of the Effective Date, between MRP Tenant and TownePlace Management, LLC (“TP Manager”) for the TownePlace Suites hotels.

7.Amended and Restated Pooling Agreement, dated as of the Execution Date but to become effective as of the Effective Date, among Marriott, Full Service Manager, RI Manager, CY Manager, SH Manager, TP Manager, MRP Tenant and CY Tenant.

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