EX-10.1




 Exhibit 10.1 

Execution Version 

AMENDED AND RESTATED EMPLOYMENT AGREEMENT 

This Amended and Restated Employment Agreement (the “Agreement”), dated as of May 4, 2022 (the “Effective
Date”), is made and entered into by and between, on the one hand, Definitive Healthcare, LLC, a Massachusetts limited liability company (the “Company”) and its parent company Definitive Healthcare Corp., a Delaware
corporation (“Parent”) (together with the Company, the “Company Group”), and on the other hand, Robert Musslewhite (the “Executive”). 

Introduction 
 The Company
Group desires to continue to employ the Executive, and the Executive desires to continue to be employed by the Company Group, pursuant to the terms and conditions set forth herein. The Executive will be the Chief Executive Officer of the Company and
Parent, with significant access to information concerning the Company Group and its business. The disclosure or misuse of such information or the engaging in competitive activities would cause substantial harm to the Company Group. 

NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties agree as
follows: 
 1. Term. Effective Date; Term. From the Effective Date through July 31, 2022, the Employment Agreement
between the Company and Executive dated as of October 7, 2021 (the “Prior Employment Agreement”), pursuant to which Executive is employed by the Company as its President, shall remain in effect (unless terminated prior
thereto). As of August 1, 2022 (the “Appointment Date”), the Executive shall become Chief Executive Officer of the Company and Parent pursuant to the terms and conditions of this Agreement, and shall no longer serve as
President of the Company. Effective as of the Appointment Date, this Agreement shall supersede and replace the Prior Employment Agreement, except as specified herein. All provisions of this Agreement shall become effective as of the Appointment
Date, and are conditioned on the Executive’s continued employment with the Company through such date. The Executive’s employment as Chief Executive Officer of the Company and Parent, commencing on the Appointment Date, shall be on an
“at will” basis, and shall continue until terminated pursuant to Section 6 of this Agreement. 
 2. Duties. The
Executive will serve as the Chief Executive Officer of the Company and Parent and shall have such authority, duties and responsibilities assigned to Executive by Parent’s Board of Directors (the “Board”) and that are
customarily associated with the role of the Chief Executive Officer of a public company. The Executive will report to the Board. The Executive shall also serve as a member of the Board, and may be appointed as a director and/or officer of affiliates
of the Company Group, in each case for no additional compensation beyond that set forth herein, and with all such positions automatically terminating as of the termination of the Executive’s employment as Chief Executive Officer of the Company
and Parent under this Agreement. 











 3. Full Time; Best Efforts. The Executive shall use the Executive’s professional
and diligent efforts to promote the interests of the Company Group and, except as provided in this Section 3, shall devote the Executive’s full business time and efforts to its business and affairs. The Executive shall not engage in any
other activity that could reasonably be expected to materially interfere with the performance of the Executive’s duties, services and responsibilities hereunder. Notwithstanding the foregoing, nothing in this Agreement shall preclude the
Executive from (i) engaging in civic, charitable, and volunteer activities, (ii) managing his personal investments, and/or (iii) serving on the board of directors of CoStar Group, Iodine Software and Ascend Learning, and, in the
future, other boards of directors or similar governing bodies of other business enterprises with the prior approval of the Board and engaging in other business activities in which he is engaged as of the Effective Date; provided, that such
activities do not materially interfere with the Executive’s proper performance of his duties and responsibilities on behalf of the Company Group, do not create a conflict of interest and would not result in a breach of Executive’s
restrictive covenant obligations referenced in Sections 5-7 below. 
 4. Compensation and
Benefits. As Chief Executive Officer of the Company and Parent, the Executive shall be entitled to compensation and benefits as follows: 

(a) Base Salary. The Executive will receive a salary at the rate of $429,000 annually (the “Base Salary”),
payable in accordance with the Company Group’s standard payroll practices. The Compensation Committee of the Board of Directors (the “Board”) of Definitive Healthcare Corp. (“Parent”) shall determine, on an
annual basis and in its sole discretion, whether to increase the Executive’s Base Salary. 
 (b) Bonus. The Executive
shall be eligible to receive an annual cash bonus (“Annual Bonus”), based on the Company Group achieving specified performance targets and other requirements (which may include with respect to the Executive’s performance
as Chief Executive Officer) which will be determined reasonably and in good faith on an annual basis for the corresponding year by the Board, beginning with 2022. Achievement of the specified performance targets and other requirements (including the
Executive’s performance as Chief Executive Officer, if applicable), and the corresponding amount of the Executive’s Annual Bonus (if any), shall be determined each year in the good faith determination of the Board based on the Company
Group’s and the CEO’s performance against the goals selected by the Board. The Executive must be actively employed by the Company through and including the date on which the Annual Bonus, if any, is paid to be eligible to receive it. All
earned Annual Bonus amounts unpaid as of the end of a calendar year shall be paid no later than March 15 of the following calendar year. 

(c) Equity Awards. The Board (or an appropriate committee thereof) shall grant to Executive three awards of restricted stock units in
Parent (the “RSUs”) pursuant to the Definitive Healthcare Corp. 2021 Equity Incentive Plan and an award agreement: (i) 333,322 RSUs that vest: 30% on the first anniversary of the Effective Date, followed by quarterly vesting of 7%
per quarter until fully vested over the subsequent thirty (30) months, subject to Executive’s continued Service (as defined in the Definitive Healthcare Corp. 2021 Equity Incentive Plan) on each vesting date, (ii) 83,333 RSUs that vest:
25% on the first anniversary of the Effective Date, followed by quarterly vesting of 6.25% per quarter until fully vested over the subsequent three (3) years, subject to Executive’s continued Service on each vesting date, and (iii) 125,000
RSUs that vest based upon the Company’s Total Shareholder Return versus the Nasdaq Composite index of SaaS and Health Care Information Technology Companies and Executive’s continued Service. 

  
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 (d) Benefits. In addition to the Base Salary and the compensation set forth above,
the Executive shall be entitled to participate in Company Group benefit plans that are generally available to the Company Group’s executive employees in accordance with and subject to the then existing terms and conditions of such plans. If the
Executive chooses to participate in the Company Group health plan, the Company Group will pay or reimburse 100% of the costs of the premiums of the policy. The Company Group may modify or terminate such benefit programs at any time in its sole
discretion. 
 (e) Reimbursement of Documented Business Expenses. The Executive will be entitled to reimbursement of all reasonable
expenses incurred in the ordinary course of business on behalf of the Company Group, subject to the presentation of appropriate documentation and approved by, or in accordance with the Company Group’s policies as approved by the Board. If any
reimbursement provided by the Company Group pursuant to this Agreement would constitute deferred compensation for purposes of Section 409A of the Internal Revenue Code of 1986, as amended (together with the regulations and guidance thereunder,
“Section 409A”), such reimbursement shall be subject to the following rules: (i) the amounts to be reimbursed shall be determined pursuant to the terms of the applicable benefit plan, policy or agreement;
(ii) the amounts eligible for reimbursement during any calendar year may not affect the expenses eligible for reimbursement in any other calendar year; (iii) any reimbursement of an eligible expense shall be made on or before the last day
of the calendar year following the calendar year in which the expense was incurred; and (iv) the Executive’s right to reimbursement is not subject to liquidation or exchange for cash or another benefit. For the sake of clarity, the
Executive will be entitled to reimbursement of all reasonable expenses incurred traveling between Washington, DC and Boston/Framingham. In addition, in the event that the Executive elects to relocate for business purposes at the Company’s
request, the Company Group agrees to cover relocation expenses of up to $100,000, which amount shall be payable in the year of relocation. 

(f) Withholding. The Company Group shall withhold from compensation payable to the Executive all applicable federal, state and
local withholding taxes required to be withheld by the Company under applicable law 
 (g) D&O Insurance; Indemnification. The
Company Group will maintain a directors and officers liability policy covering the Executive with coverage comparable or equal to that provided to other senior executives of the Company Group. The Company Group has entered into an indemnification
agreement with the Executive on terms no less favorable to the Executive than those set forth in the Company Group’s standard form of Director and Officer Indemnification Agreement. 

5. Confidentiality; Intellectual Property. The Executive agrees that during the Executive’s employment or other business
relationship with the Company Group, whether or not under this Agreement, and at all times thereafter: 
 (a) The Executive will not at any
time, directly or indirectly, disclose or divulge any Confidential Information, except as required in connection with the performance of the Executive’s duties for the Company, and except to the extent required by law (but only after the
Executive has provided the Company with reasonable notice and opportunity to take action against any legally required disclosure). As used herein, “Confidential Information” means all trade


  
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secrets and all other information of a business, financial, marketing, technical or other nature relating to the business of the Company including, without limitation, any customer or vendor
lists, prospective customer names, financial statements and projections, know-how, pricing policies, operational methods, methods of doing business, technical processes, formulae, designs and design projects,
inventions, computer hardware, software programs, business plans and projects pertaining to the Company and including any information of others that the Company has agreed to keep confidential; provided, that Confidential Information shall not
include any information that has entered or enters the public domain through no fault of the Executive. 
 (b) The Executive shall
make no use whatsoever, directly or indirectly, of any Confidential Information at any time, except as required in connection with the performance of the Executive’s duties for the Company. 

(c) Upon the Company’s request following termination of employment, the Executive shall immediately deliver to the Company all
materials (including all soft and hard copies) in the Executive’s possession or control which contain or relate to Confidential Information. 

(d) All inventions, modifications, discoveries, designs, developments, improvements, processes, software programs, works of authorship,
documentation, formulae, data, techniques, know-how, secrets or intellectual property rights or any interest therein (collectively, “Developments”) made by the Executive in connection with his
employment with the Company, either alone or in conjunction with others, at any time or at any place during the Executive’s employment or other business relationship with the Company, whether or not under this Agreement and whether or not
reduced to writing or practice during such period of employment, which relate to the business in which the Company is engaged or any actual or demonstrably anticipated research or development of the Company, shall be and hereby are the exclusive
property of the Company without any further compensation to the Executive. In addition, without limiting the generality of the prior sentence, all Developments which are copyrightable work by the Executive are intended to be “work made for
hire” as defined in Section 101 of the Copyright Act of 1976, as amended, and shall be and hereby are the property of the Company. 

(e) The Executive shall promptly disclose any Developments to the Company. If any Development is not the property of the Company by
operation of law, this Agreement or otherwise, the Executive will, and hereby does, assign to the Company all right, title and interest in such Development, without further consideration, and will assist the Company and its nominees in every way, at
the Company’s expense, to secure, maintain and defend the Company’s rights in such Development. The Executive shall sign all instruments reasonably necessary for the filing and prosecution of any applications for, or extension or renewals
of, letters patent (or other intellectual property registrations or filings) of the United States or any foreign country which the Company desires to file and relates to any Development. The Executive hereby irrevocably designates and appoints the
Company and its duly authorized officers and agents as the Executive’s agent and attorney-in-fact (which designation and appointment shall be deemed coupled with an
interest and shall survive the Executive’s death or incapacity), to act for and in the Executive’s behalf to execute and file any such applications, extensions or renewals and to do all other lawfully permitted acts to further the
prosecution and issuance of such letters patent, other intellectual property registrations or filings or such other similar documents with the same legal force and effect as if executed by the Executive. 

  
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 (f) Protected Disclosures and Other Protected Actions. 

i. Government Agencies. Nothing contained in this Agreement limits Executive’s ability to file a charge or complaint with the
Equal Employment Opportunity Commission, the National Labor Relations Board, the Occupational Safety and Health Administration, the Securities and Exchange Commission or any other federal, state, or local governmental agency or commission
(“Government Agencies”). Executive further understand that this Agreement does not limit Executive’s ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be conducted
by any Government Agencies, including providing documents or other information, without notice to the Company. This Agreement does not limit Executive’s right to receive an award from a whistleblower award program administered by any Government
Agencies for providing information to any Government Agencies. 
 ii. Immunity under Defend Trade Secrets Act. In accordance with the
Defend Trade Secrets Act of 2016, no employee will be held criminally or civilly liable under any federal or state trade secret law for the disclosure of a trade secret that: (a) is made (i) in confidence to a federal, state, or local
government official, either directly or indirectly, or to an attorney; and (ii) solely for the purpose of reporting or investigating a suspected violation of the law; or (b) is made in a complaint or other document that is filed under seal
in a lawsuit or other proceeding. 
 6. Nonsolicitation. The Executive agrees that during the Executive’s employment or other
business relationship with the Company, whether or not under this Agreement, and for a period of one year thereafter (the “Restricted Period”): 

(a) the Executive will not, directly or indirectly, individually or as a consultant to, or an executive, officer, director, manager,
stockholder, partner, member or other owner or participant in any business entice away from the Company, reduce the amount of business conducted with the Company by or otherwise materially interfere with the business relationship of the Company with
any person or entity who is, or was within the one-year period immediately prior thereto , a customer or client of, supplier, vendor or service provider to, or other party having business relations with the
Company; and 
 (a) the Executive will not, directly or indirectly, individually or as a consultant to, or an executive, officer,
director, manager, stockholder, partner, member or other owner or participant in any business entity offer employment to or otherwise interfere with the business relationship of the Company with any person or entity who is, or was within the one-year period immediately prior thereto , employed by the Company. 
 7. Non-Competition. The Executive agrees that, from the Effective Date through the Restricted Period, the Executive will not directly or indirectly provide services, whether as an owner, officer, director, partner,
member, employee, agent, consultant, advisor or developer or in any similar capacity, to any other business entity that is engaged or seeks to become engaged in any line of business conducted by the Company or its affiliates, or in which the Company
or its affiliates have actual or demonstrably anticipated research or development, in each case, in any state of the United States and any country outside the United States in which the Company or any of its affiliates conducts its business
(provided that the Executive shall not be prohibited from 

  
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owning up to five percent (5%) of the outstanding stock of a corporation which is publicly traded, so long as the Executive has no active participation in the business of such corporation). The
post-employment restrictions in this Section 7 shall not apply in the case of a termination of the Executive’s employment by the Company without Cause. The Executive acknowledges and agrees that the compensation, including the new equity
awards set forth in Section 4(c) above, provided to the Executive by the Company under this Agreement constitute fair and reasonable, mutually agreed upon consideration for the restrictions contained in this Agreement, including, without
limitation, in this Section 7. If the Executive has unlawfully taken, physically or electronically, property belonging to the Company, or has breached any fiduciary duties owed to the Company, the duration of the post-service restrictions in
this Section 7 shall be extended to two years following the termination of the Executive’s employment. The Executive acknowledges that (i) he has the right to consult with counsel prior to signing this Agreement, and (ii) he has
had notice of the non-competition restriction set forth in this Section 7 for at least 10 business days prior to the Effective Date. 

8. Remedies. Without limiting the remedies available to the Company, the Executive acknowledges that a breach of any of the covenants
contained in Sections 5, 6 or 7 hereof could result in irreparable injury to the Company for which there might be no adequate remedy at law, and that, in the event of such a breach or threat thereof, the Company shall be entitled to obtain a
temporary restraining order and/or a preliminary injunction and a permanent injunction restraining the Executive from engaging in any activities prohibited by Sections 5, 6 or 7 hereof or such other equitable relief as may be required to enforce
specifically any of the covenants contained in Sections 5, 6 or 7 hereof. The foregoing provisions and the provisions of Sections 5, 6 or 7 hereof shall survive the termination of the Executive’s employment with the Company, and shall continue
thereafter in full force and effect in accordance with their terms. 
 9. Applicability to Related Companies. For purposes of
Sections 5, 6, 7 and 8 of this Agreement, the term “Company” shall include the Company and Parent and each of their respective affiliates, whether now existing or hereinafter created, and their respective successors and assigns. 

10. Review of Agreement; Reasonable Restrictions. The Executive (a) has carefully read and understands all of the provisions of
this Agreement and has had the opportunity for this Agreement to be reviewed by counsel, (b) acknowledges that the duration, scope and subject matter of Sections 5 through 9 of this Agreement are reasonable and necessary to protect the
goodwill, customer relationships, legitimate business interests and Confidential Information of the Company and its affiliates, and (c) will be able to earn a satisfactory livelihood without violating this Agreement. 

11. Termination. 

(a) General. The Executive’s employment with the Company Group may be terminated at any time (i) by the Company Group with or
without Cause, (ii) by the Executive for any or no reason, including Good Reason, or (iii) by the Company Group or the Executive in the event of the Executive’s Disability, and shall terminate in the event of the Executive’s
death. In the event of any termination of the Executive’s employment as Chief Executive Officer of the Company and Parent, all positions Executive holds as a director and/or officer of Company, Parent, or any of their affiliates shall
automatically terminate as of the same date, and Executive agrees to sign such documentation as the Company or Parent may request to effectuate the foregoing. 

  
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 (b) Definitions. As used herein, the following terms shall have the following
meanings: 
 “Cause” shall mean, with respect to the Executive, (i) commission of, pleading guilty or no contest to, a
felony, a gross misdemeanor, or any crime involving moral turpitude; (ii) any unlawful act which is materially injurious or detrimental to the reputation or financial interests of the Company Group or its affiliates; (iii) theft of
property of the Company Group or its affiliates or falsification of documents of the Company Group or its affiliates or dishonesty in their preparation; (iv) breach of any material provision of any written policy, handbook, or code of conduct
of Company or Parent (including, without limitation, any provision pertaining to harassment, discrimination, or retaliation), or any material provision of any agreement with the Company, Parent or their affiliates, including any non-competition, non-solicitation or confidentiality provisions, or any other similar restrictive covenants to which the Executive is or may become a party with the Company,
Parent or their affiliates. To the extent any breach set forth in this definition of Cause can be cured in all material respects, the Company shall provide written notice to the Executive identifying the breach and Executive shall have thirty
(30) calendar days to cure the breach in all material respects. 
 “Change of Control” shall mean the occurrence of
any of the following events: 
 (i) A change in the ownership of the Company which occurs on the date that any one person, or
more than one person acting as a group (“Person”), acquires ownership of the stock of the Company that, together with the stock held by such Person, constitutes more than fifty percent (50%) of the total voting power of the stock of
the Company; provided, however, that for purposes of this subsection (i), the acquisition of additional stock by any one Person, who is considered to own more than fifty percent (50%) of the total voting power of the stock of the Company will not be
considered a Change of Control; or 
 (ii) A change in the effective control of the Company which occurs on the date that a
majority of members of the Board is replaced during any twelve (12) month period by members of our Board whose appointment or election is not endorsed by a majority of the members of the Board prior to the date of the appointment or election.
For purposes of this clause (ii), if any Person is considered to be in effective control of the Company, the acquisition of additional control of the Company by the same Person will not be considered a Change of Control; or 

(iii) A change in the ownership of a substantial portion of the Company’s assets which occurs on the date that any Person
acquires (or has acquired during the twelve (12) month period ending on the date of the most recent acquisition by such person or persons) assets from the Company that have a total gross fair market value equal to or more than 50% of the total
gross fair market value of all of the assets of the Company immediately prior to such acquisition or acquisitions; provided, however, that for purposes of this subsection (iii), the following will not constitute a change in the ownership of a
substantial portion of the Company’s assets: (A) a transfer to an entity that is controlled by the 

  
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Company’s stockholders immediately after the transfer, or (B) a transfer of assets by the Company to: (1) a stockholder of the Company (immediately before the asset transfer) in
exchange for or with respect to the Company’s stock, (2) an entity, 50% or more of the total value or voting power of which is owned, directly or indirectly, by the Company, (3) a Person, that owns, directly or indirectly, 50% or more
of the total value or voting power of all the outstanding stock of the Company, or (4) an entity, at least 50% of the total value or voting power of which is owned, directly or indirectly, by a Person described in this subsection (iii)(B)(3).
For purposes of this subsection (iii), gross fair market value means the value of the assets of the Company, or the value of the assets being disposed of, determined without regard to any liabilities associated with such assets. 

For purposes of this definition, Persons will be considered to be acting as a group if they are owners of a corporation that
enters into a merger, consolidation, purchase or acquisition of stock, or similar business transaction with the Company. 

Notwithstanding the foregoing, a transaction will not be deemed a Change of Control unless the transaction qualifies as a
change in control event within the meaning of Code Section 409A, as it has been and may be amended from time to time, and any proposed or final Treasury Regulations and Internal Revenue Service guidance that has been promulgated or may be
promulgated thereunder from time to time. 
 Further and for the avoidance of doubt, a transaction will not constitute a Change of Control
if: (i) its sole purpose is to change the state of the Company’s incorporation, or (ii) its sole purpose is to create a holding company that will be owned in substantially the same proportions by the persons who held the
Company’s securities immediately before such transaction. 
 “Change of Control Period” means the period beginning on
the date three (3) months prior to, and ending on the date thirteen (13) months following, a Change of Control. 
 “Good
Reason” means, without the Executive’s written consent, (a) a material diminution (of 10% or more) of the Base Salary or target Annual Bonus (i.e. the size of the target Annual Bonus that the Executive has the opportunity to
earn); (b) any material breach by the Company Group of any written agreement between the Executive and the Company or Parent; (c) the Company materially changes the location of Executive’s working arrangements as in effect on the Effective
Date; or (d) a material diminution of the duties, title, authority or responsibilities of the Executive (to include any change in reporting that results in the Executive not reporting to the Board), provided that no condition set forth in the
preceding (a), (b), (c) or (d) will be deemed Good Reason unless the Company Group fails to cure in all material respects the condition(s) giving rise to Good Reason within 30 days from the date on which the Executive notifies the Company
Group, in writing, of such condition(s). 
 “Disability” means illness (mental or physical) or accident, which results in
the Executive being unable to perform the Executive’s duties as the Chief Executive Officer of the Company and Parent as reasonably determined by a competent physician, for a period of 180 days, whether or not consecutive, in any 12-month period. 

  
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 “Severance” means (i) continuation of regular payments of Base Salary
(at the rate in effect on the date of termination) to the Executive for a period of twelve (12) months from the date of termination of employment, payable in accordance with the Company’s regular payroll schedule and subject to withholding
for all applicable taxes; and; (ii) payment of the Annual Bonus to be earned by the Executive during the twelve month period following the date of termination of employment at a level equal to the greater of the Annual Bonus for the current
year at target or the average of the bonuses paid in the last two (2) calendar years if such history exists, within thirty (30) days following the date of termination and subject to withholding for all applicable taxes;
(iii) acceleration of the vesting based on continued service of all stock options, restricted stock shares and RSUs, profit interests, or other forms of equity (the “Equity”), awarded to the Executive by the Company at any
time, that would otherwise have vested during the twelve-month period following the termination date; (iv) for Equity subject to vesting based on the achievement of performance goals other than continued service, to the extent such performance
goals are capable of being achieved during the twelve-month period following the termination date, such Equity shall remain outstanding and eligible to vest during such twelve month period and if such performance goals are not so achieved within
such period, such Equity shall be forfeited at the end of such period, and (v) should Executive timely elect and be eligible to continue receiving group health insurance pursuant to the Consolidated Omnibus Budget Reconciliation Act of 1985, as
amended (“COBRA”), payment for a period of twelve (12) months of the entire amount of the premiums for such COBRA coverage. In addition, if not yet paid upon the date of termination, the Company shall pay the full Annual Bonus
earned with respect for the prior fiscal year. 
 (c) Effects of Termination. Upon the termination of the Executive’s
employment, the Company shall have no further obligation to make any payments or provide any benefits to the Executive hereunder after the date of termination except for (i) payments of Base Salary and expense reimbursement that had accrued but
had not been paid prior to the date of termination, (ii) if required by law, payments for any accrued but unused vacation time, and (iii) if the Executive’s employment with the Company and Parent is terminated by the Company and
Parent without Cause (other than as a result of death or Disability of the Executive) or by the Executive for Good Reason, payments of Severance shall be due. 

The Severance benefits available to the Executive under this Section 11 are the sole and exclusive severance payments and benefits to
which the Executive may be entitled upon termination of the Executive’s employment. The Executive shall not be entitled to receive any other severance-related payments or benefits under any other plan or agreement which may from time to time be
made available to other executives of the Company, Parent or any affiliate. 
 (d) Termination by the Company Group without Cause or by
the Executive for Good Reason following a Change in Control. Notwithstanding anything to the contrary in this Section 11, if, during a Change of Control Period, the Executive is terminated by the Company Group without Cause or the Executive
terminates his employment with Good Reason, the Executive shall be entitled to all of the benefits under Section 11(c), including Severance, however in such case the applicable Severance benefits shall be modified so that executive receives
(i) continuation of regular payments of Base Salary (at the rate in effect on the date of termination) to the Executive for a period of eighteen (18) months from the date of termination of employment, payable in accordance with the Company
Group’s regular payroll schedule and subject to withholding for all applicable taxes; (ii) payment of 1.5 times the Annual 

  
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Bonus to be earned by the Executive during the twelve (12) month period following the date of termination of employment at a level equal to the greater of the Annual Bonus for the current
year at target or the average of the bonuses paid in the last two (2) calendar years if such history exists, within thirty (30) days following the date of termination and subject to withholding for all applicable taxes;
(iii) acceleration of the vesting in full of all stock options, restricted stock shares and RSUs, profit interests, or other forms of equity, awarded to the Executive by the Company or Parent (or any of their respective affiliates) at any time,
treating for such purposes any Equity with vesting based on the achievement of performance goals as having been achieved at the greater of (A) actual achievement of the performance goal (if capable of being measured immediately prior to the
time of the occurrence of the Change in Control or Executive’s termination of employment) or (B) “target”; and (iv) should Executive timely elect and be eligible to continue receiving group health insurance pursuant to COBRA,
payment for a period of eighteen (18) months of the entire amount of the premiums for such COBRA coverage. 
 (e) Conditions and
Limitations to Severance. Notwithstanding the foregoing, the Company Group’s obligation to pay Severance shall be subject to the following provisions and conditions: 

(i) Release of Claims. The Company Group’s obligation to pay Severance shall be contingent upon the Executive
signing a general release of claims in form and substance reasonably acceptable to the Company Group and Executive. 
 (ii) Consequences
of Breach. If the Executive breaches the Executive’s obligations under Sections 5, 6 or 7 during the period the Company Group is obligated to pay Severance, the Company Group may immediately cease payments of Severance and may recover all
Severance paid to the Executive after the date of such breach. The cessation and recovery of these payments shall be in addition to, and not as an alternative to, any other remedies at law or in equity available to the Company Group including,
without limitation, the right to seek specific performance or an injunction. To the extent any breach set forth in this paragraph can be cured in all material respects, the Company Group shall provide written notice to the Executive identifying the
breach and Executive shall have thirty (30) calendar days to cure the breach. 
 For purposes of Section 409A, each payment of
Severance shall be considered a separate payment and not one of a series of payments. Any payment under this Section 10 that is not made during the period following the termination of the Employee’s employment because the Employee has not
executed the release contemplated hereby shall be paid to the Employee in a single lump sum on the first payroll date following the last day of any applicable revocation period after the Employee executes the release; provided, that the
Employee executes and does not revoke the release in accordance with the requirements hereof. 
 12. Survival. The provisions of
Sections 5 through 28 of this Agreement shall survive the termination of the Executive’s employment with the Company Group, and shall continue thereafter in full force and effect in accordance with their terms. 

  
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 13. Section 409A. This Agreement is intended to comply with the
requirements of Section 409A and the regulations thereunder. To the extent that any provision in this Agreement is ambiguous as to its compliance with Section 409A of the Code, the provision shall be interpreted in a manner so that no
payment due to Executive shall be subject to an “additional tax” within the meaning of Section 409A(a)(1)(B) of the Code. To the extent that any provision in the Agreement is ambiguous as to its compliance with Section 409A of
the Code, or to the extent any provision in the Agreement must be modified to comply with Section 409A of the Code, such provision shall be read, or shall be modified (with the mutual consent of the parties), as the case may be, in such a
manner so that no payment due to Executive shall be subject to an “additional tax” within the meaning of Section 409A(a)(1)(B) of the Code. 

For purposes of Section 409A of the Code, each payment made under this Agreement shall be treated as a separate payment. In no event may
Executive, directly or indirectly, designate the calendar year of any payment. All reimbursements provided under this Agreement shall be made or provided in accordance with the requirements of Section 409A of the Code, including, where
applicable, the requirement that (i) any reimbursement be for expenses incurred during Executive’s lifetime (or during a shorter period of time specified in this Agreement), (ii) the amount of expenses eligible for reimbursement during a
calendar year may not affect the expenses eligible for reimbursement in any other calendar year, (iii) the reimbursement of an eligible expense will be made on or before the last day of the calendar year following the year in which the expense
is incurred, and (iv) the right to reimbursement is not subject to liquidation or exchange for another benefit. 
 Notwithstanding
anything to the contrary herein, if a payment or benefit under this Agreement is due to a “separation from service” for purposes of the rules under Treas. Reg. § 1.409A-3(i)(2) (payments to
specified employees upon a separation from service) and Executive is determined to be a “specified employee” (as determined under Treas. Reg. § 1.409A-1(i)), such payment or benefit shall, to
the extent necessary to comply with the requirements of Section 409A of the Code, be made or provided on the later of the date specified by the foregoing provisions of this Agreement or the date that is six months after the date of
Executive’s separation from service (or, if earlier, the date of Executive’s death). Any installment payments that are delayed pursuant to this Section 13 shall be accumulated and paid in a lump sum on the first day of the seventh
month following Executive’s separation from service, and the remaining installment payments shall begin on such date in accordance with the schedule provided in this Agreement. 

14. Limitation on Payments. In the event that the severance and other benefits provided for in this Agreement or otherwise payable to
Executive (i) constitute “parachute payments” within the meaning of Section 280G of the Code and (ii) but for this Section 14, would be subject to the excise tax imposed by Section 4999 of the Code, then
Executive’s severance and other benefits will be either: (a) delivered in full, or (b) delivered as to such lesser extent which would result in no portion of such severance and other benefits being subject to the excise tax under
Section 4999 of the Code, whichever of the foregoing amounts, taking into account the applicable federal, state and local income taxes and the excise tax imposed by Section 4999, results in the receipt by Executive on an after-tax basis, of the greatest amount of severance and other benefits, notwithstanding that all or some portion of such severance and other benefits may be taxable under Section 4999 of the Code. If a
reduction in the severance and other benefits constituting “parachute payments” is necessary so that no portion of such severance benefits is subject to the excise tax under Section 4999 of the Code, the reduction shall occur in the
following order: (1) reduction of the cash severance payments, in the order that such payments would otherwise have been paid; (2) cancellation of accelerated vesting of equity awards that vest, in


  
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whole or in part, based on the achievement of performance criteria, in the reverse order that such awards would have vested; (3) cancellation of accelerated vesting of equity awards that
vest based solely on continued service, in the order of the percentage of the fair market value of such awards that constitutes a parachute payment (commencing with the largest percentage); and (4) reduction of continued employee benefits.
Notwithstanding the foregoing, to the extent the Company submits any payment or benefit payable to Executive under this Agreement or otherwise to the Company’s stockholders for approval in accordance with Treasury Regulation Section 1.280G-1 Q&A 7, the foregoing provisions shall not apply following such submission and such payments and benefits will be treated in accordance with the results of such vote, except that any
reduction in, or waiver of, such payments or benefits required by such vote will be applied without any application of discretion by Executive and in the order prescribed by this Section 14. Unless the Company and Executive otherwise agree in
writing, any determination required under this Section 14 will be made in writing by an independent professional legal or accounting firm (the “Firm”), whose determination will be conclusive and binding upon Executive and the
Company for all purposes. For purposes of making the calculations required by this Section 14, the Firm may make reasonable assumptions and approximations concerning applicable taxes and may rely on reasonable, good faith interpretations
concerning the application of Sections 280G and 4999 of the Code. The Company and Executive will furnish to the Firm such information and documents as the Firm may reasonably request in order to make a determination under this Section 9. The
Company will bear the fees of the Firm and all costs the Firm may reasonably incur in connection with any calculations contemplated by this Section 14. 

15. Enforceability, Etc. This Agreement shall be interpreted in such a manner as to be effective and valid under applicable law, but if
any provision hereof shall be prohibited or invalid under any such law, such provision shall be ineffective to the extent of such prohibition or invalidity, without invalidating or nullifying the remainder of such provision or any other provisions
of this Agreement. If any one or more of the provisions contained in this Agreement shall for any reason be held to be excessively broad as to duration, geographical scope, activity or subject, such provisions shall be construed by limiting and
reducing it so as to be enforceable to the maximum extent permitted by applicable law. 
 16. Notices. All notices and other
communications given or made pursuant to this Agreement shall be in writing and shall be deemed effectively given: (i) upon personal delivery to the party to be notified; (ii) when sent by confirmed facsimile if sent during normal business
hours of the recipient, and if not so confirmed, then on the next business day; (iii) five days after having been sent by registered or certified mail, return receipt requested, postage prepaid; or (iv) one day after deposit with a
nationally recognized overnight courier, specifying next day delivery, with written verification of receipt. All communications shall be sent to the respective parties at their address as set forth below, or to such facsimile number or address as
subsequently modified by written notice given in accordance with this Section 11. 
 (a) If to the Executive, to the most recent
address reflected in the Company’s records. 

  
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 (b) If to the Company Group, to the Company’s principal place of business. 

17. Governing Law. This Agreement shall be governed by and construed in accordance with the internal laws of the Commonwealth of
Massachusetts, without regard to its choice of law provisions. 
 18. Jurisdiction. The parties hereby agree that any suit, action or
proceeding seeking to enforce any provision of, or based on any matter arising out of or in connection with, this Agreement shall only be brought in the State or Federal courts located in the Commonwealth of Massachusetts and not in any other State
or Federal courts located in the United States of America or any court in any other country, and each of the parties hereby consents to the jurisdiction of such courts (and of the appropriate appellate courts therefrom) in any such suit, action or
proceeding and irrevocably waives, to the fullest extent permitted by law, any objection that it may now or hereafter have to the laying of the venue of any such suit, action or proceeding in any such court or that any such suit, action or
proceeding which is brought in any such court has been brought in an inconvenient form. 
 19. Waiver of Jury Trial. EACH PARTY
HERETO ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY WHICH MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES, AND THEREFORE EACH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A
TRIAL BY JURY IN RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT AND ANY OF THE AGREEMENTS DELIVERED IN CONNECTION HEREWITH OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY. 

20. No Mitigation; No Set Off. In the event of termination without Cause or resignation for Good Reason, the Executive shall be under
no obligation to seek other employment and there shall be no offset against any amount due to Executive under this Agreement on account of any subsequent renumeration received from any subsequent employer. No amounts payable hereunder shall not be
subject to any setoff or recoupment. 
 21. Amendments and Waivers. This Agreement may be amended or modified only by a written
instrument signed by the Company Group (at the direction of the Board) and the Executive. No waiver of this Agreement or any provision hereof shall be binding upon the party against whom enforcement of such waiver is sought unless it is made in
writing and signed by or on behalf of such party. The waiver of a breach of any provision of this Agreement shall not be construed as a waiver or a continuing waiver of the same or any subsequent breach of any provision of this Agreement. No delay
or omission in exercising any right under this Agreement shall operate as a waiver of that or any other right. 
 22. Binding Effect.
This Agreement shall be binding on and inure to the benefit of the parties hereto and their respective heirs, executors and administrators, successors and assigns, except that the obligations of the Executive hereunder are personal and may not be
assigned without the Company Group’s prior written consent and the Executive’s rights under this Agreement may be transferred only by will or the laws of descent and distribution. Any assignment of this Agreement by the Company Group shall
not be considered a termination of the Executive’s employment and such an assignment may be made only to a successor to the business of the Company Group. 

  
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 23. Entire Agreement. This Agreement constitutes the final and entire agreement of
the parties with respect to the matters covered hereby and replaces and supersedes all other agreements and understandings relating hereto and to the Executive’s employment, including (as of the Appointment Date, but nor prior thereto) the
Prior Employment Agreement. 
 24. Counterparts. This Agreement may be executed in any number of counterparts, all of which together
shall for all purposes constitute one Agreement. Counterpart signature pages to this Agreement transmitted by facsimile transmission, by electronic mail in “portable document format” or “.pdf” form, or by any other electronic
means intended to preserve the original graphic and pictorial appearance of a document, will have the same effect as physical delivery of the paper document bearing an original signature. 

25. No Conflicting Agreements. The Executive represents and warrants to the Company Group that the Executive is not a party to or bound
by any confidentiality, noncompetition, nonsolicitation, employment, consulting or other agreement or restriction which could conflict with, or be violated by, the performance of the Executive’s duties to the Company Group or obligations under
this Agreement. 
 26. Captions. The captions of the sections of this Agreement are for convenience of reference only and in no way
define, limit or affect the scope or substance of any section of this Agreement. 
 27. No Strict Construction. The parties hereto
have participated jointly in the negotiation and drafting of this Agreement. In the event an ambiguity or question of intent or interpretation arises under any provision of this Agreement, this Agreement shall be construed as if drafted jointly by
the parties thereto, and no presumption or burden of proof shall arise favoring or disfavoring any party by virtue of authoring any of the provisions of this Agreement. 

28. Notification of New Employer. In the event that the Executive is no longer an Executive of the Company Group, the Executive
consents to notification by the Company Group to the Executive’s new employer or its agents regarding the Executive’s obligations under Sections 5, 6 and 7 of the Prior Employment Agreement. 

[The remainder of this page is intentionally left blank.] 

  
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 IN WITNESS WHEREOF, this Agreement has been executed and delivered as a sealed instrument as
of the date first above written. 
  

							
	DEFINITIVE HEALTHCARE, LLC
		
	By:	 	 /s/ David Samuels

	Name:	 	David Samuels
	Title:	 	Chief Legal Officer
	
	DEFINITIVE HEALTHCARE CORP.
		
	By:	 	 /s/ David Samuels

	Name:	 	David Samuels
	Title:	 	Chief Legal Officer & Secretary
	
	EXECUTIVE
	
	 /s/ Robert Musslewhite

	Robert Musslewhite


 [Signature Page to Amended and Restated Employment Agreement]