EX-10.1




 Exhibit 10.1 

Execution Version 

EMPLOYMENT AGREEMENT 

This Employment Agreement (“Agreement”) is made between Cullinan Oncology, Inc., a Delaware corporation (the
“Company”), and Jeffrey Jones (the “Executive”) and is effective as of the Executive’s first day of employment with the Company, which will be February 28, 2022 (the “Effective Date”).
This Agreement supersedes in all respects all prior agreements between the Executive and the Company regarding the subject matter herein, including without limitation any term sheet. 

WHEREAS, the Company desires to employ the Executive and the Executive desires to be employed by the Company on the terms and conditions
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 Company shall employ the Executive and the Executive shall be employed by the Company pursuant to this Agreement
commencing as of the Effective Date and continuing until such employment is 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 Chief Medical Officer of the Company and shall have such powers and duties as
may from time to time be prescribed by the Chief Executive Officer (the “CEO”) or other duly authorized executive. The Executive shall devote the Executive’s 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 Board of Directors of the Company (the “Board”), or engage in religious, charitable or other community
activities, in each case, as long as such services and activities do not interfere with the Executive’s performance of the Executive’s duties to the Company. 

2. Compensation and Related Matters. 

(a) Base Salary. The Executive’s initial base salary shall be paid at the rate of $460,000 per year. The Executive’s base
salary shall be subject to periodic review by the Board or the Compensation Committee of the Board (the “Compensation Committee”) at least annually. 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. 











 (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. The Executive’s initial target annual incentive compensation shall be 40 percent of the Executive’s Base Salary. 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 term of any applicable incentive compensation plan that may be in effect from time to time. Except as provided in Section 5 below, the Executive must be employed by the Company on the date
such incentive compensation is paid in order to earn or receive any annual incentive compensation. For 2022 fiscal year, the Executive shall be paid a cash incentive compensation amount (using the same Company-based performance criteria as
applicable to other Company executives), prorated for the period from the Effective Date through December 31, 2022. 
 (c) Sign-On Bonus. The Company shall pay the Executive a sign-on bonus in the gross amount of $100,000, less applicable deductions and withholdings (the “Sign-On Bonus”), to be paid no later than the first regular payroll date following the Effective Date; provided that if the Executive resigns other than for Good Reason or is terminated by the
Company for Cause (as such terms are defined below) prior to the 18-month anniversary of the Effective Date, he shall repay the Company a prorated portion of the gross
Sign-On Bonus within 30 days following the Date of Termination (as defined below), with such prorated portion to be calculated as the product of $5,555.56 multiplied by the number of months (rounded to the
nearest tenth) between the Date of Termination and the 18-month anniversary of the Effective Date. 

(d) 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. 

(e) Location. It is understood and agreed that the Executive will work remotely, provided that the Executive shall be required to
travel to the Company’s main office, currently located in Cambridge, MA, on a regular basis and as necessary and may also be required to travel elsewhere for business as necessary. 

(f) 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. 
 (g) Paid Time Off. The Executive shall be entitled to take
paid time off in accordance with the Company’s applicable paid time off policy for executives, as may be in effect from time to time. 

(h) Equity. 

  
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 (i) In connection with the commencement of the Executive’s employment
and subject to the approval of the Board, the Executive shall be granted a stock option to purchase 215,000 shares of the Company’s common stock at an exercise price per share equal to the closing price of a share of Company common stock on the
Effective Date (the “Option”). 25% of the Option shall vest on the one-year anniversary of the Effective Date and the remaining 75% shall vest monthly on a
pro-rated basis over the following three years, subject to the Executive’s continued service relationship on each such vesting date. The Option shall be subject to the terms of and contingent upon the
Executive’s execution of a stock option award agreement issued pursuant to the Company’s 2021 Stock Option and Incentive Plan, as amended or restated from time to time (the “Plan”), on terms no less favorable than
applicable to options to purchase Company common stock granted on or prior to the Effective Date to other executives of the Company. 

(ii) Notwithstanding anything to the contrary in the Equity Documents, in the event that the Date of Termination is a result of
a termination by the Company without Cause under Section 3(d) or a termination by the Executive for Good Reason under Section 3(e), in each case during the Change in Control Period (as defined below), then any unvested stock options and
annual equity awards subject to time-based vesting only shall immediately accelerate and become fully vested and exercisable on the Date of Termination. 

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. 

  
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 (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 any of the following: (i) conduct by the Executive constituting a material act of misconduct in connection with the performance of
the Executive’s duties, including, without limitation, (A) willful failure or refusal to perform material responsibilities that have been requested by the CEO; (B) dishonesty to the CEO with respect to any material matter; or
(C) misappropriation of funds or property of the Company or any of its subsidiaries or affiliates other than the occasional, customary and de minimis use of Company 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 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 or any of its subsidiaries or affiliates if the Executive were to continue to be employed in the same position; 

(iv) continued non-performance by the Executive of the Executive’s duties hereunder (other than
by reason of the Executive’s physical or mental illness, incapacity or disability) which has continued for more than 30 days following written notice of such non-performance from the CEO; 

(v) a breach by the Executive of any of the provisions contained in Section 8 of this Agreement or the Restrictive Covenants Agreement
(as defined below); 
 (vi) a material violation by the Executive of any of the Company’s written employment policies; or 

(vii) the Executive’s failure to cooperate with a bona fide internal investigation or an investigation by regulatory or law enforcement
authorities, after being instructed by the Company 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 employment hereunder at any time for any reason, including but not limited
to, Good Reason. For purposes of this Agreement, “Good Reason” shall mean that the Executive has completed all steps of the Good Reason Process (hereinafter defined) following the occurrence of any of the following events without
the Executive’s consent (each, a “Good Reason Condition”): 

  
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 (i) a material diminution in the Executive’s responsibilities,
authority or duties or reporting line; 
 (ii) a material diminution in the Executive’s Base Salary, except for across-the-board salary reductions based on the Company’s financial performance similarly affecting all or substantially all senior management employees of the Company;

 (iii) a material change in the geographic location of the principal office of the Company to which the Executive is
assigned, 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; or 

(iv) a material breach of this Agreement by the Company. 

The “Good Reason Process” consists of the following steps: 

(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 of not less than 30 days following such notice (the “Cure Period”), to remedy the Good Reason Condition; 

(iv) notwithstanding such efforts, the Good Reason Condition continues to exist at the end of the Cure Period; and 

(v) the Executive terminates employment within 60 days after the end of the Cure Period. 

If the Company cures the Good Reason Condition during the Cure Period, Good Reason shall be deemed not to have occurred. 

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 

  
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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(d) 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, then, in addition to the Accrued Obligations, and subject to (i) the Executive signing a separation agreement and release in a form and manner satisfactory to the Company, which shall include, without
limitation, a general release of claims against the Company and all related persons and entities substantially in the form used by the Company for other members of senior management of the Company, a reaffirmation of all of the Executive’s
Continuing Obligations (as defined below), and, in the Company’s sole discretion, a one-year post-employment noncompetition agreement, and shall provide that if the Executive materially breaches any of
the Continuing Obligations, all payments of the Severance Amount shall immediately cease (the “Separation Agreement”), and (ii) the Separation Agreement becoming irrevocable, all within 60 days after the Date of Termination (or
such shorter period as set forth in the Separation Agreement): 
 (a) the Company shall pay the Executive an amount equal to 9 months of the
Executive’s Base Salary (the “Severance Amount”); 
 (b) a prorated bonus for the year of termination, based on the
Date of Termination, and paid at the time annual bonuses for the year of termination are paid to other executives of the Company (a “Prorated Bonus”); and 

  
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 (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 group health plan provider or the
COBRA provider a monthly payment equal to the monthly employer contribution that the Company would have made to provide health insurance to the Executive if the Executive had remained employed by the Company until the earliest of (A) the 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; provided, however, that if the Company determines that it cannot pay such amounts to the group health plan provider or the COBRA provider (if applicable) without potentially violating applicable law
(including, without limitation, Section 2716 of the Public Health Service Act), then the Company shall convert such payments to payroll payments directly to the Executive for the time period specified above. Such payments to the Executive shall
be subject to tax-related deductions and withholdings and paid on the Company’s regular payroll dates. 

Except for the Prorated Bonus, the amounts payable under Section 5, to the extent taxable, shall be paid out in substantially equal installments in
accordance with the Company’s payroll practice over 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 is within
the Change in Control Period. These provisions shall terminate and be of no further force or effect after the Change in Control Period. 

(i) (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 a
general release of claims against the Company and all related persons and entities (the “Release”) by the Executive and the Release becoming fully effective, all within the time frame set forth in the Release but in no event more than 60
days after the Date of Termination: the Company shall pay the Executive a lump sum in cash in an amount equal to the sum of (A) twelve (12) months of 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) 1.0 times 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 

  
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 (ii) 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 group health plan provider or the COBRA provider a monthly payment equal to the monthly employer
contribution that the Company would have made to provide health insurance to the Executive 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; provided, however,
that if the Company determines that it cannot pay such amounts to the group health plan provider or the COBRA provider (if applicable) without potentially violating applicable law (including, without limitation, Section 2716 of the Public
Health Service Act), then the Company shall convert such payments to payroll payments directly to the Executive for the time period specified above. Such payments to the Executive shall be subject to
tax-related deductions and withholdings and paid on the Company’s regular payroll dates. 
 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. 
 (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 

  
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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 Agreement, the following terms shall have the meanings set forth below: 

(i) “Change in Control” shall mean a “Sale Event” as defined in the Plan. 

(ii) “Change in Control Period” shall mean the period commencing on the occurrence of the first event constituting a Change
in Control and ending twelve (12) months after the occurrence of the first event constituting a Change in Control. 
  

  
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 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 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. 

  
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 8. Continuing Obligations.  

(a) Restrictive Covenants Agreement. As a condition of the Executive’s employment, the Executive is required to enter into the
Employee Confidentiality, Assignment, Nonsolicitation and Noncompetition Agreement attached hereto as Exhibit A (the “Restrictive Covenants Agreement”). For purposes of this Agreement, the obligations in this Section 8
and those that arise in the 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.” 
 (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 reasonably cooperate with the Company, including 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, (ii) the investigation, whether internal or external, of any matters about which the Company believes the Executive may have knowledge or information and
(iii) after his employment, the reasonable transitioning of duties. 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 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. 

  
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 9. Consent to Jurisdiction. The parties hereby consent to the jurisdiction of the
state and federal courts of the Commonwealth of Massachusetts. 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. 

10. 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. 
 11. 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. Assignment; 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 2(h)(iii), Section 5 or 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). 
 13. 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. 

  
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 14. 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. 
 15.
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. 

16. 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. 
 17. 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. 
 18. 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. Except for the Restrictive Covenants Agreement, 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. 

19. Governing Law. This is a Massachusetts contract and shall be construed under and be governed in all respects by the laws of the
Commonwealth of Massachusetts, 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 First Circuit. 
 20. Conditions. Notwithstanding anything to the contrary herein, the
effectiveness of this Agreement shall be conditioned on (i) the Executive’s satisfactory completion of reference and background checks, if so requested by the Company, and (ii) the Executive’s submission of satisfactory proof of
the Executive’s legal authorization to work in the United States. 
 21. D&O Insurance; Indemnification. 

  
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 (a) The Executive shall be covered by the Company’s directors and officers liability
insurance to the same extent that such coverage is maintained for other officers or directors of the Company. 
 (b) The Company shall
indemnify the Executive pursuant to the terms of an indemnification agreement to be entered into by the Company and the Executive. 
 22.
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. 

 

			
	CULLINAN ONCOLOGY, INC.
		
	By:	 	 /s/ Nadim Ahmed

	Its:	 	CEO, Cullinan Oncology
	
	EXECUTIVE
	
	 /s/ Jeffrey Jones

	Jeffrey Jones



  
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 Execution Version 

 
 Exhibit A 

Restrictive Covenants Agreement