Document:

EX-10.19

 Exhibit 10.19 

FORM OF 
 LIMITED
PARTNER CONTRIBUTION AND EXCHANGE AGREEMENT 
 BY AND AMONG 

LIFESTANCE HEALTH GROUP, INC., 

LIFESTANCE TOPCO, L.P. 

AND 
 THE LIMITED
PARTNERS OF LIFESTANCE TOPCO, L.P. PARTY HERETO 
 DATED AS OF JUNE [    ], 2021 

  
 1 

 This LIMITED PARTNER CONTRIBUTION AND EXCHANGE AGREEMENT (this
“Agreement”), dated as of June [    ], 2021, is hereby entered into by and among LifeStance Health Group, Inc., a Delaware corporation (the “PubCo”), LifeStance TopCo, L.P., a Delaware limited
partnership (“TopCo”), and the persons party hereto (each a “Limited Partner” and collectively the “Limited Partners”). 

RECITALS 
 WHEREAS, the
Boards of Directors of TopCo (the “TopCo Board”) and of PubCo (the “PubCo Board”) have determined to effect an underwritten initial public offering (the “IPO”) of shares of Common Stock (as defined
below) on the terms and subject to the conditions contained in the Underwriting Agreement (as defined below); 
 WHEREAS, in connection with
the IPO, as contemplated by the Limited Partnership Agreement, dated May 14, 2020, by and among TopCo, its general partner, and the Limited Partners (the “Existing Limited Partnership Agreement”), the TopCo Board has approved a
“Recapitalization” pursuant to which Units of TopCo will be contributed to PubCo in exchange for shares of Common Stock; 

WHEREAS, each of the Limited Partners holds Units of TopCo; 

WHEREAS, in contemplation of, and in connection with, the IPO, the parties desire to and agree to effect the Contribution (as defined below);
and 
 NOW, THEREFORE, in consideration of the promises and the mutual covenants and agreements set forth herein, and for other good and
valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties to this Agreement (the “Parties”) hereby agree as follows: 

1. Definitions. Capitalized terms used but not defined herein have the meanings given to them in the Existing Limited Partnership Agreement. As
used herein, the following terms shall have the following meanings. 
 “Agreement” has the meaning set forth in the
Preamble hereof. 
 “Business Day” means any day that is not a Saturday, a Sunday or other day on which banks are by law
closed in the City of New York. 
 “Class A-1 Units” has the
meaning given such term in the Existing Limited Partnership Agreement. 

“Class A-2 Units” has the meaning given such term in the Existing
Limited Partnership Agreement. 
 “Class B Units” has the meaning given such term in the Existing
Limited Partnership Agreement. 
 “Code” means the Internal Revenue Code of 1986, as amended. 

  
 1.1 

 “Common Stock” means common stock, par value $0.01 per share, of PubCo.

 “Contribution” has the meaning set forth in Section 3. 

“Exchange Act” means the Securities Exchange Act of 1934, as amended. 

“Existing Limited Partnership Agreement” has the meaning set forth in the Recitals hereof. 

“IPO” has the meaning set forth in the Recitals hereof. 

“IPO Closing” means the initial closing of the sale of the shares of Common Stock in the IPO (without giving effect to any
exercise of the underwriters’ option to purchase additional shares pursuant to the Underwriting Agreement). 
 “IPO Effective
Time” means the date and time on which the Registration Statement becomes effective. 
 “IPO Price” means the
public offering price of shares of Common Stock in the IPO (net of any underwriting discounts, concessions, commissions, fees and expenses), as shall be determined by the PubCo Board or the pricing committee thereof. 

“Limited Partner” has the meaning set forth in the Preamble hereof. 

“Parties” has the meaning set forth in the Recitals hereof. 

“Person” means an individual, a partnership, a joint venture, an association, a corporation, a trust, an estate, a limited
liability company, a limited liability partnership, an unincorporated entity of any kind, a governmental entity or any other legal entity. 

“Pricing” means such date and time as the PubCo Board or the pricing committee thereof determines the IPO Price, such date
and time to be no later than immediately prior to the IPO Effective Time. 
 “PubCo” has the meaning set forth in the
Preamble hereof. 
 “PubCo Board” has the meaning set forth in the Recitals hereof. 

“Registration Statement” means the Exchange Act registration statement filed by PubCo on Form
8-A with the SEC to register the Common Stock. 
 “Schedule of Partners” means the
Unit ownership ledger maintained by TopCo, pursuant to Section 3.2 of the Existing Limited Partnership Agreement. 

“SEC” means the Securities and Exchange Commission. 

“Securities Act” means the Securities Act of 1933, as amended. 

  
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 “Silversmith Investor” means, collectively, Silversmith Capital Partners I-A, LP, a Delaware limited partnership, and Silversmith Capital Partners I-B, LP, a Delaware limited partnership. 

“Summit Investor” means, collectively, Summit Partners Growth Equity Fund IX-A, L.P.,
a Delaware limited partnership, Summit Partners Growth Equity Fund IX-B, L.P., a Delaware limited partnership, Summit Investors GE IX/VC IV, LLC, a Delaware limited partnership, Summit Partners Entrepreneur
Advisors Fund II, L.P., a Delaware limited partnership, and Summit Investors GE IX/VC IV (UK), LP., a Cayman Islands limited partnership. 

“TopCo” has the meaning set forth in the Preamble hereof. 

“TopCo Board” has the meaning set forth in the Recitals hereof. 

“TPG Investor” means TPG VIII Lynnwood Holdings Aggregation, L.P., a Delaware limited partnership. 

“Underwriting Agreement” means the underwriting agreement to be entered into in connection with the IPO by and among PubCo
and the representatives of the several underwriters of the IPO. 
 “Units” has the meaning given such term in the Existing
Limited Partnership Agreement. 
 2. Other Definitional Provisions. In this Agreement, unless otherwise specified or where the context otherwise
requires: 
 a. the headings of particular provisions of this Agreement are inserted for convenience only and will not be construed as a part
of this Agreement or serve as a limitation or expansion on the scope of any term or provision of this Agreement; 
 b. wherever a conflict
exists between this Agreement and any other agreement among Parties hereto, this Agreement shall control but solely to the extent of such conflict; and 

c. the Parties hereto have participated collectively in the negotiation and drafting of this Agreement; accordingly, in the event an ambiguity
or question of intent or interpretation arises, it is the intention of the Parties that this Agreement shall be construed as if drafted collectively by the Parties hereto, and that no presumption or burden of proof shall arise favoring or
disfavoring any party hereto by virtue of the authorship of any provisions of this Agreement. 
 3. The Contribution. 

 

	 	a.	 Subject to the terms and conditions set forth herein, and on the basis of and in reliance upon the
representations, warranties, covenants and agreements set forth herein, the Parties shall take the actions described in this Section 3. 

  
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	 	b.	 Effective immediately following the Pricing (and prior to the IPO Effective Time), each Limited Partner hereby
contributes (the “Contribution”) all of the Units held by him, her or it to PubCo in exchange for a number of shares of Common Stock to be determined by the TopCo Board in accordance with Section 9.4(b) of the Existing Limited
Partnership Agreement. Pursuant to Section 9.4(b) of the Existing Limited Partnership Agreement, the number of shares of Common Stock issued to the Limited Partners in connection with the Contribution shall be allocated to each Limited Partner
based on the dollar amount that such Limited Partner would be entitled to receive had an amount equal to the equity value of the Company (based on the IPO Price) been distributed to the Limited Partners pursuant to Section 4.1 of the Existing
Limited Partnership Agreement (and other applicable provisions thereof, including Section 5.5 (Withholding, Indemnification and Reimbursement for Payments on Behalf of a Limited Partner)) and the terms of any Partnership Interest Award
Agreements evidencing Class B Units or other contracts between the Partnership and any Limited Partner, after taking into account all prior Distributions and assuming, for this purpose only, that all Unvested Class B Units were Vested
Class B Units. Each Limited Partner hereby acknowledges and agrees that the TopCo Board has the sole authority and discretion to determine the number of shares of Common Stock issued to the Limited Partners hereunder. 

 

	 	c.	 In connection with the Contribution, each Limited Partner holding Class B Units immediately prior to the
Contribution acknowledges and agrees that the shares of Common Stock issued to such Limited Partner hereunder shall be subject to the same vesting and forfeiture conditions and other provisions set forth in the Partnership Interest Award Agreement
entered into between such Limited Partner and TopCo that evidenced the Class B Units as of immediately prior to the Contribution, as such Partnership Interest Award Agreement may have been amended from time to time, and any shares of Common
Stock received in respect of Unvested Class B Units in connection with the Contribution shall be issued as shares of restricted Common Stock. For the avoidance of doubt, the restrictions set forth in Section 6 (Restrictive Covenants) of
the Partnership Interest Award Agreement and in the Existing Limited Partnership Agreement shall continue to apply to each Limited Partner in accordance with their terms. 

 

	 	d.	 With respect to any shares of restricted Common Stock received in connection with the Contribution, each
Limited Partner hereby agrees to make an election pursuant to Section 83(b) of the Code. 

  

	 	e.	 Each of the Parties hereby acknowledges, agrees and consents to the Contribution and agrees to take all action
necessary or appropriate in order to effect, or cause to be effected, to the extent within his, her or its control, the Contribution and the IPO. There shall be no conditions to the Contribution other than the approval of the Board of TopCo (or a
duly authorized committee thereof). 

 4. Failure to Consummate the IPO. Notwithstanding Section 3, if,
following the Contribution, PubCo determines (in its sole discretion) not to consummate the IPO and provides written notice of such determination to the Parties, each of the Parties hereto shall, and shall cause each of its respective Affiliates
and/or Subsidiaries, as applicable, to, as soon as reasonably practicable following the receipt of such notice, use good faith efforts to take or cause to be taken 

  
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all actions, and to do, or cause to be done, and to assist and cooperate with the other Parties and their respective Affiliates and/or Subsidiaries to cause each Party to be in a substantially
equivalent economic position to that as prior to the Contribution and to reinstate the governance, transfer restrictions, liquidity rights and other provisions of the Existing Limited Partnership Agreement in all substantive respects (the
“Unwinding”); provided, however, that, with respect to the Unwinding, PubCo shall consult with and consider in good faith suggestions from the Parties regarding the actions necessary to effect the Unwinding and nothing contained herein
shall require or permit any Party (including PubCo) to take or cause to be taken, any action, or do, or cause to be done, or assist and cooperate with the other Parties in doing, anything that is expected to not be
tax-free in all material respects with respect to PubCo, such Party, its owners and its Affiliates. 
 5.
Execution of Additional Documents. The Parties hereto shall, and each hereby agrees to, enter into any other documents and instruments necessary or desirable to be delivered in connection with the Contribution. 

6. Representations and Warranties of all Parties. Each Party hereby represents and warrants to all of the other Parties hereto as follows as of the
date of this Agreement and as of immediately prior to the time of the Contribution: 
 a. To the extent such Party is not an individual, such
Party is duly organized, validly existing and in good standing under the laws of its jurisdiction of organization or incorporation. The execution, delivery and performance by such Party of this Agreement has been duly authorized by all necessary
action. 
 b. To the extent such Party is not an individual, such Party has the requisite power, authority and legal right to execute and
deliver this Agreement and to consummate the transactions contemplated hereby. 
 c. This Agreement has been duly executed and delivered by
such Party and constitutes the legal, valid and binding obligation of such Party, enforceable against such Party in accordance with its terms, subject to (i) the effects of bankruptcy, insolvency, fraudulent conveyance, reorganization,
moratorium and other similar laws relating to or affecting creditors’ rights generally, (ii) general equitable principles (whether considered in a proceeding in equity or at law) and (iii) an implied covenant of good faith and fair
dealing. 
 d. Neither the execution, delivery and performance by such Party of this Agreement, nor the consummation by such Party of the
transactions contemplated hereby, nor compliance by such Party with the terms and provisions hereof, will, directly or indirectly (with or without notice or lapse of time or both), (i) contravene or conflict with, or result in a breach or
termination of, or constitute a default under (or with notice or lapse of time or both, result in the breach or termination of or constitute a default under) the organization documents of such Party (to the extent such Party is not an individual),
(ii) constitute a violation by such Party of any existing requirement of law applicable to such Party or any of his, her or its properties, rights or assets or (iii) require the consent or approval of any Person, except in the case of clauses
(ii) and (iii), as would not reasonably be expected to result in, individual or in the aggregate, a material adverse effect on the ability of such Party to consummate the transaction contemplated by this Agreement. 

  
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 e. Such Party (either alone or together with his, her or its advisors) has such knowledge
and experience in financial or business matters that it is capable of evaluating the merits and risks of the Contribution. Such Party has had the opportunity to ask questions and receive answers concerning the terms and conditions of the
Contribution and has had full access to such other information concerning the Contribution as it has requested. Such Party has received all information that it believes is necessary or appropriate in connection with the Contribution. Such Party is
an informed and sophisticated party and has engaged, to the extent such Party deems appropriate, expert advisors experienced in the evaluation of transactions of the type contemplated hereby. Such Party understands that the securities acquired
hereunder have not been registered and agrees to resell such securities pursuant to registration under the Securities Act, pursuant to an available exemption from registration, or, if applicable, in accordance with the provisions of Regulation S
under the Securities Act. 
 7. Additional Representations of the Company. PubCo hereby further represents and warrants to the Limited
Partners as of the date of this Agreement and as of immediately prior to the time of the Contribution that all of the shares of Common Stock have been duly authorized, and when such shares are issued in the Contribution, such shares will be validly
issued, fully paid and non-assessable. 
 8. Additional Representations of the Limited Partners. Each
Limited Partner hereby further represents and warrants to all of the other Parties as follows as of the date of this Agreement and as of immediately prior to the time of the Contribution: 

a. Such Limited Partner is the record and beneficial owner of a number of Class A-1 Units equal to
the number set forth opposite such Limited Partner’s name on the Schedule of Partners under the column titled “Class A-1 Units”. Such Limited Partner is the record and beneficial owner of a
number of Class A-2 Units equal to the number set forth opposite such Limited Partner’s name on the Schedule of Partners under the column titled
“Class A-2 Units”. Such Limited Partner is the record and beneficial owner of a number of Class B Units equal to the number set forth opposite such Limited Partner’s name on the
Schedule of Partners under the column titled “Class B Units.” Such Limited Partner has good and marketable title to all of his, her or its Units free and clear of all encumbrances. 

b. Such Limited Partner does not have a binding obligation to sell, transfer or otherwise exchange (or to cause or allow any action that would
result in a transfer or deemed transfer for U.S. federal income tax purposes) the Common Stock it will receive in connection with the Contribution. 
 9.
Tax Matters. 
 a. The Contribution. The Parties agree to report and cause to be reported for all purposes, including federal,
state, and local Tax purposes and financial reporting purposes, except upon a contrary final determination by an applicable taxing authority, the Contribution, combined with the IPO, as a contribution of the equity interests of TopCo in a
transaction 

  
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described in Code Section 351 and, to the extent 100% of the limited partnership interests of TopCo are contributed to PubCo pursuant to this Agreement, Situation 3 of IRS Revenue Ruling 84-111, 1984-2 CB 88. All Parties hereto shall also comply with the reporting requirements described in Treasury Regulations
Section 1.351-3. To the extent the transactions contemplated by this Agreement are not expected to result in a transaction described in Situation 3 of IRS Revenue Ruling
84-111, 1984-2 CB 88 (and in any case if less than 100% of the limited partnership interests of TopCo are contributed to PubCo pursuant to this Agreement), PubCo shall
(1) contribute at least 1% of the outstanding equity interests (by value) of TopCo into a newly-formed subsidiary of PubCo treated as a domestic corporation for U.S. federal income tax purposes (“PubCo Sub”), (2) establish a limited
liability company or limited partnership under the laws of the state of Delaware (“Merger Sub”), (3) cause Merger Sub to merge with and into TopCo with TopCo surviving such that any limited partner of TopCo (other than PubCo and PubCo Sub)
will receive shares of Common Stock in connection with such merger, PubCo and PubCo Sub will retain their direct equity interests in TopCo, and PubCo will directly and indirectly own 100% of the outstanding equity interests of TopCo, (4) cause
to be contributed 100% of the equity interests of TopCo held by PubCo and PubCo Sub into a separate newly-formed subsidiary treated as a domestic corporation for U.S. federal income tax purposes (“PubCo Sub II”) in a transaction intended
to be described in Situation 3 of IRS Revenue Ruling 84-111, 1984-2 CB 88, and (5) contribute 100% of the equity interests in PubCo Sub II held by PubCo to PubCo
Sub. 
 b. Tax Forms. Prior to the time of the Contribution, 

i. PubCo shall deliver to each Limited Partner a certification conforming to the requirements of Treasury Regulations Section 1.897-2(h) and 1.1445-2(c); 
 ii. TopCo shall
deliver to PubCo a certification in a form reasonably acceptable to PubCo conforming to the requirements of Treasury Regulations Section 1.1445-11T(d); and 

iii. TopCo shall deliver to PubCo a certification in a form reasonably acceptable to PubCo conforming to the requirements of Treasury
Regulations Section 1.1446(f)-2(b)(4)(i)(B). 
 c. Transfer Taxes. PubCo shall be
responsible for and shall timely pay all transfer, documentary, sales, use, stamp, registration and other similar Taxes, and any conveyance fees or recording charges incurred in connection with the Contribution. 

d. Cooperation. Each Party will cooperate fully, as and to the extent reasonably requested by the other Parties, in connection with any
Tax matters relating to the matters described herein. The Party requesting such cooperation will pay the reasonable costs and expenses of the cooperating Party. 

  
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 10. Miscellaneous. 

a. Amendments and Waivers. This Agreement may be modified, amended or waived only by an agreement in writing signed by (i) PubCo,
(ii) TopCo, (iii) the TPG Investor, (iv) the Summit Investor, (v) the Silversmith Investor and (v) Michael K. Lester; provided, however, that an amendment or modification that would affect any other Party in a manner materially
and disproportionately adverse to such Party shall be effective against such Party so materially and adversely affected only with the prior written consent of such Party, such consent not to be unreasonably withheld or delayed. The failure of any
Party to enforce any of the provisions of this Agreement shall in no way be construed as a waiver of such provisions and shall not affect the right of such Party thereafter to enforce each and every provision of this Agreement in accordance with its
terms. 
 b. Successors, Assigns and Transferees. This Agreement shall bind and inure to the benefit of and be enforceable by the
Parties hereto and their respective successors and assigns. 
 c. Notices. Any notices, requests, demands and other communications
required or permitted in this Agreement shall be effective if in writing and (i) delivered personally, (ii) sent by e-mail or (iii) sent by overnight courier, in each case, addressed as follows:

 if to PubCo or TopCo, to: 
 c/o LifeStance
Health Group, Inc. 
 4800 Scottsdale Road, Suite 6000 

Scottsdale, Arizona 85251 

Attention: Ryan Pardo, Chief Legal Officer 

E-mail: [    ] 

with a copy (which shall not constitute notice) to: 

Ropes & Gray LLP 
 800
Boylston Street 
 Boston, MA 02199 

Attention: Thomas Fraser 
 E-mail: [    ] 
 If to a Limited Partner, to the address of such Limited Partner
reflected on the books and records of TopCo. 
 Unless otherwise specified herein, such notices or other communications shall be deemed
effective (i) on the date received, if personally delivered, (ii) on the date received if delivered by e-mail on a Business Day, or if not delivered on a Business Day, on the first Business Day
thereafter and (iii) one Business Day after being sent by overnight courier. Each of the parties hereto shall be entitled to specify a different address by giving notice as aforesaid to each of the other parties hereto. 

d. Further Assurances. At any time or from time to time after the date hereof, the Parties agree to cooperate with each other, and at
the request of any other Party, to execute and deliver any further instruments or documents and to take all such further action as another Party may reasonably request in order to evidence or effectuate the consummation of the transactions
contemplated hereby and to otherwise carry out the intent of the Parties hereunder. 

  
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 e. Entire Agreement. Except as otherwise expressly set forth herein, this Agreement
embodies the complete agreement and understanding among the Parties hereto with respect to the subject matter hereof and supersedes and preempts any prior understandings, agreements or representations by or among the Parties, written or oral, that
may have related to the subject matter hereof in any way. 
 f. Governing Law. This Agreement and all claims arising out of or based
upon this Agreement or relating to the subject matter hereof shall be governed by and construed in accordance with the domestic substantive laws of the State of Delaware without giving effect to any choice or conflict of laws provision or rule that
would cause the application of the domestic substantive laws of any other jurisdiction. 
 g. Consent to Jurisdiction. Each Party to
this Agreement, by its execution hereof, (i) hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the State of Delaware for the purpose of any action, claim, cause of action or suit (in contract,
tort or otherwise), inquiry, proceeding or investigation arising out of or based upon this Agreement or relating to the subject matter hereof, (ii) hereby waives to the extent not prohibited by applicable law, and agrees not to assert, and
agrees not to allow any of its subsidiaries to assert, by way of motion, as a defense or otherwise, in any such action, any claim that it is not subject personally to the jurisdiction of the above-named courts, that his, her or its property is
exempt or immune from attachment or execution, that any such proceeding brought in one of the above-named courts is improper, or that this Agreement or the subject matter hereof or thereof may not be enforced in or by such court and
(iii) hereby agrees not to commence or maintain any action, claim, cause of action or suit (in contract, tort or otherwise), inquiry, proceeding or investigation arising out of or based upon this Agreement or relating to the subject matter
hereof or thereof other than before one of the above-named courts nor to make any motion or take any other action seeking or intending to cause the transfer or removal of any such action, claim, cause of action or suit (in contract, tort or
otherwise), inquiry, proceeding or investigation to any court other than one of the above-named courts whether on the grounds of inconvenient forum or otherwise. Notwithstanding the foregoing, to the extent that any party hereto is or becomes a
party in any litigation in connection with which it may assert indemnification rights set forth in this Agreement, the court in which such litigation is being heard shall be deemed to be included in clause (i) above. Notwithstanding the
foregoing, any party to this Agreement may commence and maintain an action to enforce a judgment of any of the above-named courts in any court of competent jurisdiction. Each Party hereto hereby consents to service of process in any such proceeding
in any manner permitted by Delaware law, and agrees that service of process by registered or certified mail, return receipt requested, at his, her or its address specified pursuant to Section 4.8 hereof is reasonably calculated to give actual
notice. 
 h. Waiver of Jury Trial. TO THE EXTENT NOT PROHIBITED BY APPLICABLE LAW THAT CANNOT BE WAIVED, EACH PARTY HERETO HEREBY
WAIVES AND COVENANTS THAT IT WILL NOT ASSERT (WHETHER AS PLAINTIFF, DEFENDANT OR OTHERWISE) ANY RIGHT TO TRIAL BY JURY IN ANY FORUM IN RESPECT OF ANY ISSUE OR ACTION, CLAIM, CAUSE OF ACTION OR SUIT (IN CONTRACT, TORT OR OTHERWISE), INQUIRY,
PROCEEDING OR INVESTIGATION ARISING OUT OF OR BASED UPON THIS AGREEMENT OR THE SUBJECT MATTER HEREOF OR IN ANY WAY CONNECTED WITH OR RELATED OR INCIDENTAL TO THE TRANSACTIONS 

  
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CONTEMPLATED HEREBY, IN EACH CASE WHETHER NOW EXISTING OR HEREAFTER ARISING AND WHETHER IN CONTRACT, TORT OR OTHERWISE. EACH PARTY HERETO ACKNOWLEDGES THAT IT HAS BEEN INFORMED BY THE OTHER
PARTIES HERETO THAT THIS SECTION 10(h) CONSTITUTES A MATERIAL INDUCEMENT UPON WHICH IT IS RELYING AND WILL RELY IN ENTERING INTO THIS AGREEMENT AND THE TRANSACTIONS CONTEMPLATED HEREBY. ANY PARTY HERETO MAY FILE AN ORIGINAL COUNTERPART OR A COPY OF
THIS SECTION 10(h) WITH ANY COURT AS WRITTEN EVIDENCE OF THE CONSENT OF EACH SUCH PARTY TO THE WAIVER OF HIS, HER OR ITS RIGHT TO TRIAL BY JURY. 

i. Severability. Whenever possible, each provision of this Agreement shall be interpreted in such manner as to be effective and valid
under applicable law, but if any provision of this Agreement is held invalid, illegal or unenforceable in any respect under any applicable law or rule in any jurisdiction, such invalidity, illegality or unenforceability shall not affect any other
provision or any other jurisdiction, but this Agreement shall be reformed, construed and enforced in such jurisdiction as if such invalid, illegal or unenforceable provision had never been contained herein. 

j. Enforcement. Each Party hereto acknowledges that money damages would not be an adequate remedy in the event that any of the
covenants or agreements in this Agreement are not performed in accordance with its terms, and it is therefore agreed that in addition to and without limiting any other remedy or right it may have, the
non-breaching Party will have the right to an injunction, temporary restraining order or other equitable relief in any court of competent jurisdiction enjoining any such breach and enforcing specifically the
terms and provisions hereof. 
 k. No Third-Party Beneficiaries. This Agreement shall be solely for the benefit of the Parties and no
other Person or entity shall be a third Party beneficiary hereof. 
 l. Counterparts; Electronic Signatures. This Agreement may be
executed in any number of separate counterparts each of which when so executed shall be deemed to be an original and all of which together shall constitute one and the same agreement. Counterpart signature pages to this Agreement may be delivered by
facsimile or electronic delivery (i.e., by e-mail of a PDF signature page) and each such counterpart signature page will constitute an original for all purposes. Each Party hereby agrees that this Agreement
may be executed by way of electronic signatures and that the electronic signature has the same binding effect as a physical signature. For the avoidance of doubt, each Party further agrees that this Agreement, or any part hereof, shall not be denied
legal effect, validity or enforceability solely on the ground that it is in the form of an electronic record. 
 * * * * * 

[THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT BLANK] 

  
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 IN WITNESS WHEREOF, the Parties have executed this Agreement as of the date first written
above. 
  

			
	PUBCO:
	
	LIFESTANCE HEALTH GROUP, INC.

 
			
		
	By:	 	 
	Name:	 	
	Title:	 	

 
			
	
	TOPCO:
	
	LIFESTANCE TOPCO, L.P.

 
			
		
	By:	 	 
	Name:	 	
	Title:	 	

 [Signature Page to Limited Partnership Contribution and Exchange Agreement] 

 IN WITNESS WHEREOF, the Parties have executed this Agreement as of the date first written
above. 
  

	
	LIMITED PARTNERS:
	
	   

	Name:

 [Signature Page to Limited Partnership Contribution and Exchange Agreement]EX-10.20

 Exhibit 10.20 

FORM OF AGREEMENT AND PLAN OF MERGER 

THIS AGREEMENT AND PLAN OF MERGER (this “Agreement”) is made and entered into as of June [ ], 2021, by and among LFST Merger
Sub, LLC, a Delaware limited liability company (“Merger Sub”), LifeStance TopCo, L.P., a Delaware limited partnership (“TopCo”), LifeStance Health Group, Inc., a Delaware corporation (“PubCo”), in
accordance with Section 18-209 of the Delaware Limited Liability Company Act (the “Limited Liability Company Act”) and Section 17-211 of the
Delaware Revised Uniform Limited Partnership Act (the “Limited Partnership Act”). 
 RECITALS: 

WHEREAS, Merger Sub was formed solely for the purpose of engaging in the transactions described in this Agreement, Merger Sub has not
conducted any business prior to the date hereof, and Merger Sub does not have any, and prior to the completion of the Merger (as defined below) will not have any, assets, liabilities or obligations of any nature other than those incident to its
formation and pursuant to this Agreement and the Merger; 
 WHEREAS, PubCo, TopCo, and certain limited partners of TopCo, have entered into
that certain Limited Partner Contribution and Exchange Agreement, dated as of the date hereof (the “Limited Partner Contribution Agreement”), pursuant to which the limited partners of TopCo each contributed 100% of the limited
partnership interest of TopCo held by such limited partner to PubCo, in exchange for shares of common stock, par value $0.01 per share (the “Common Stock”) of PubCo; and 

WHEREAS, the Board of Managers of Merger Sub, the Board of Directors of PubCo, LifeStance TopCo GP, LLC, as general partner of TopCo, and the
requisite limited partners of TopCo have approved and deemed advisable the merger of Merger Sub with and into TopCo, with TopCo being the surviving entity in such merger, pursuant to the terms of this Agreement (the “Merger”); 

NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged,
the parties hereto agree that Merger Sub shall be merged with and into TopCo, which shall be the entity surviving the Merger, and that the terms of the Merger, the mode of carrying them into effect, and the manner of converting and exchanging shares
shall be as follows: 
 ARTICLE I 

THE MERGER 
 (a) Subject to
and in accordance with the provisions of this Agreement, a Certificate of Merger shall be executed and acknowledged by TopCo and thereafter delivered to the Secretary of State of Delaware for filing, as provided in
Section 18-209(c) of the Limited Liability Company Act and Section 17-211(c) of the Limited Partnership Act. The Merger shall become effective at the
same time and at such time as the Certificate of Merger is filed as required by law with the Secretary of State of Delaware (the “Effective Time”). At the Effective Time, the separate existence of Merger Sub shall cease, Merger Sub
shall be merged with and into TopCo, and TopCo shall continue as the surviving entity of the Merger (the “Surviving Partnership”). 

 (b) Prior to and after the Effective Time, the general partners, managers, officers and
directors of the parties, as applicable, shall take all such actions as may be necessary or appropriate in order to effectuate the Merger. In the event that at any time after the Effective Time any further action is necessary or desirable to carry
out the purposes of this Agreement and to vest the Surviving Partnership with full title to all properties, assets, rights, approvals, immunities and franchises of TopCo, the general partners, managers, officers and directors of the parties, as
applicable, as of the Effective Time shall take all such further action. 
 ARTICLE II 

EFFECT ON SHARES AND PARTNERSHIP INTERESTS 

(a) Conversion of Merger Sub LLC Units. At the Effective Time, by virtue of the Merger and without any action on the part of Merger
Sub, TopCo, or the holders of any of the following securities, each unit of Merger Sub issued and outstanding immediately prior to the Merger shall be converted into a unit of Surviving Partnership. 

(b) Conversion of TopCo Interests. At the Effective Time, by virtue of the Merger and without any action on the part of Merger Sub,
TopCo, or the holders of any of the following securities, (1) each interest in TopCo outstanding immediately prior to the Merger, excluding the interests of TopCo held by PubCo or any subsidiary of PubCo, shall be converted into the right to
receive duly issued, fully paid and nonassessable shares of PubCo Common Stock and (2) each interest in TopCo outstanding immediately prior to the Merger and held by PubCo or any subsidiary of PubCo shall be converted into an equivalent
interest in Surviving Partnership. With respect to each limited partner who holds interest in TopCo immediately prior to the Merger (a “Legacy Limited Partner”), excluding PubCo or any subsidiary of PubCo, such Legacy Limited Partner shall
receive from Merger Sub the right to receive a number of duly issued, fully paid and nonassessable shares of PubCo Common Stock equal to the number of shares of PubCo Common Stock such shareholder would have been entitled to receive pursuant had it
entered into the Limited Partner Contribution and Exchange Agreement, including subject to the same vesting and forfeiture conditions and other provisions as set forth in the Limited Partner Contribution Agreement. 

  
 -2- 

 ARTICLE III 

TAX-TREATMENT COVENANT 

It is intended that the Merger shall be treated for U.S. federal income tax purposes as a taxable purchase of interests in TopCo by PubCo Sub
from limited partners of TopCo (other than PubCo and any subsidiary of PubCo) in exchange for shares of PubCo. 
 ARTICLE IV 

GOVERNING DOCUMENTS OF THE SURVIVING PARTNERSHIP 

Pursuant to Section 17-211(g) of the Limited Partnership Act, the limited partnership agreement
attached as Exhibit A hereto shall be the limited partnership agreement of the Surviving Partnership from and after the Effective Time until amended in accordance with its terms and applicable law. 

ARTICLE V 
 MANAGEMENT OF
THE SURVIVING PARTNERSHIP 
 The general partner of TopCo as of immediately prior to the Effective Time shall be the general partner of
the Surviving Partnership from and after the Effective Time to serve in accordance with its limited partnership agreement. 
 ARTICLE VI

 TERMINATION 
 This
Agreement may be terminated and the Merger and other transactions herein provided for abandoned by the mutual consent of Merger Sub, TopCo and PubCo at any time prior to the Effective Time. 

ARTICLE VII 

MISCELLANEOUS 
 (a) This
Agreement shall be governed by and construed in accordance with the laws of the State of Delaware, without regard to principles of conflict of laws. 

(b) This Agreement may be executed in counterparts, each of which when so executed shall be deemed to be an original, and such counterparts
shall together constitute but one and the same instrument. A facsimile signature page (or signature page in similar electronic form) hereto shall be treated by the parties for all purposes as equivalent to a manually signed signature page. 

(c) Prior to effecting the Merger, each Legacy Limited Partner shall have delivered to Pubco a properly completed and executed IRS Form W-9. 
 [Signature page follows] 

  
 -3- 

 IN WITNESS WHEREOF, Merger Sub, PubCo, PubCo Sub and TopCo, pursuant to approval and
authorization duly given by resolutions adopted by their respective boards of managers, general partners and boards of directors, have each caused this Agreement and Plan of Merger to be executed as of the date first written above. 

MERGER SUB: 
  

			
	LFST Merger Sub, LLC
		
	By:	 	              

	Name:	 	Ryan Pardo
	Title:	 	President, Treasurer and Secretary

 LIFESTANCE TOPCO: 

 

			
	LifeStance TopCo, L.P.
		
	By:	 	              

	Name:	 	Ryan Pardo
	Title:	 	Chief Legal Officer

 PUBCO: 

 

			
	LifeStance Health Group, Inc.
		
	By:	 	              

	Name:	 	Ryan Pardo
	Title:	 	Chief Legal Officer and Secretary

 [Signature Page to Agreement and Plan of Merger] 

 Exhibit A 

Amended and Restated Limited Partnership Agreement of Surviving Partnership

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