Document:

EX-10.1

 Exhibit 10.1 

[●], 2021 
 Supernova Partners Acquisition
Company II, Ltd. 
 4301 50th Street NW 
 Suite 300 PMB 1044

 Washington, D.C. 20016 
 Re: Initial Public
Offering 
 Ladies and Gentlemen: 
 This letter (this
“Letter Agreement”) is being delivered to you in accordance with the Underwriting Agreement (the “Underwriting Agreement”) entered into by and among Supernova Partners Acquisition Company II, Ltd., a
Cayman Islands exempted company (the “Company”), J.P. Morgan Securities LLC and Jefferies LLC, as representatives (the “Representatives”) of the several underwriters (the
“Underwriters”), relating to an underwritten initial public offering (the “Public Offering”) of up to 28,750,000 of the Company’s units (including 3,750,000 units that may be purchased pursuant to
the Underwriters’ option to purchase additional units, the “Units”), each comprising of one of the Company’s Class A ordinary shares, par value $0.0001 per share (the “Ordinary Shares”),
and a fraction of one redeemable warrant (each whole warrant, a “Warrant”). Each whole Warrant entitles the holder thereof to purchase one Ordinary Share at a price of $11.50 per share, subject to adjustment. The Units will
be sold in the Public Offering pursuant to a registration statement on Form S-1 and a prospectus (the “Prospectus”) filed by the Company with the U.S. Securities and Exchange Commission
(the “Commission”). Certain capitalized terms used herein are defined in paragraph 1 hereof. 
 In order to induce the
Company and the Underwriters to enter into the Underwriting Agreement and to proceed with the Public Offering and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Supernova Partners II LLC (the
“Sponsor”) and each of the undersigned individuals, each of whom is a member of the Company’s board of directors, a nominee for membership on the Company’s board of directors and/or a member of the Company’s
management team (each, an “Insider” and, collectively, the “Insiders”) hereby agree, severally but not jointly, with the Company as follows: 

 

	1.	 Definitions. As used herein, (i) “Business Combination” shall mean a merger,
share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses or entities; (ii) “Founder Shares” shall mean the 7,187,500 Class B ordinary shares of the
Company, par value $0.0001 per share, outstanding prior to the consummation of the Public Offering; (iii) “Private Placement Warrants” shall mean the warrants to purchase Ordinary Shares of the Company that will be acquired
by the Sponsor for an aggregate purchase price of $7,000,000 (or up to $7,750,000 if the Underwriters’ exercise their option to purchase additional units), or $2.00 per Warrant, in a private placement that shall close simultaneously with the
consummation of the Public Offering (including Ordinary Shares issuable upon 

  
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conversion thereof); (iv) “Public Shareholders” shall mean the holders of Ordinary Shares included in the Units issued in the Public Offering; (v) “Public
Shares” shall mean the Ordinary Shares included in the Units issued in the Public Offering; (vi) “Trust Account” shall mean the trust account into which a portion of the net proceeds of the Public Offering and
the sale of the Private Placement Warrants shall be deposited; (vii) “Transfer” shall mean the (a) sale of, offer to sell, contract or agreement to sell, hypothecate, pledge, grant of any option to purchase or otherwise
dispose of or agreement to dispose of, directly or indirectly, or establishment or increase of a put equivalent position or liquidation with respect to or decrease of a call equivalent position within the meaning of Section 16 of the Securities
Exchange Act of 1934, as amended, and the rules and regulations of the Commission promulgated thereunder with respect to, any security, (b) entry into any swap or other arrangement that transfers to another, in whole or in part, any of the
economic consequences of ownership of any security, whether any such transaction is to be settled by delivery of such securities, in cash or otherwise, or (c) public announcement of any intention to effect any transaction specified in clause
(a) or (b); and (viii) “Charter” shall mean the Company’s Amended and Restated Memorandum and Articles of Association, as the same may be amended from time to time. 

 

	2.	 Representations and Warranties. 

 

	 	(a)	 The Sponsor and each Insider, with respect to itself, herself or himself, represent and warrant to the Company
that it, she or he has the full right and power, without violating any agreement to which it, she or he is bound (including, without limitation, any non-competition or
non-solicitation agreement with any employer or former employer), to enter into this Letter Agreement, as applicable, and to serve as an officer of the Company and/or a director on the Company’s Board of
Director (the “Board”), as applicable, and each Insider hereby consents to being named in the Prospectus, road show and any other materials as an officer and/or director of the Company, as applicable. 

 

	 	(b)	 Each Insider represents and warrants, with respect to herself or himself, that such Insider’s biographical
information furnished to the Company (including any such information included in the Prospectus) is true and accurate in all material respects and does not omit any material information with respect to such Insider’s background. The
Insider’s questionnaire furnished to the Company is true and accurate in all material respects. Each Insider represents and warrants that such Insider is not subject to or a respondent in any legal action for, any injunction, cease-and-desist order or order or stipulation to desist or refrain from any act or practice relating to the offering of securities in any jurisdiction; such Insider has never
been convicted of, or pleaded guilty to, any crime (i) involving fraud, (ii) relating to any financial transaction or handling of funds of another person, or (iii) pertaining to any dealings in any securities and such Insider is not
currently a defendant in any such criminal proceeding; and such Insider has never been suspended or expelled from membership in any securities or commodities exchange or association or had a securities or commodities license or registration denied,
suspended or revoked. 

  
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	3.	 Business Combination Vote. It is acknowledged and agreed that the Company shall not enter into a
definitive agreement regarding a proposed Business Combination without the prior consent of the Sponsor. The Sponsor and each Insider, with respect to itself or herself or himself, agrees that if the Company seeks shareholder approval of a proposed
initial Business Combination, then in connection with such proposed initial Business Combination, it, she or he, as applicable, shall vote all Founder Shares and any Public Shares held by it, her or him, as applicable, in favor of such proposed
initial Business Combination (including any proposals recommended by the Board in connection with such Business Combination) and not redeem any Public Shares held by it, her or him, as applicable, in connection with such shareholder approval.

  

	4.	 Failure to Consummate a Business Combination; Trust Account Waiver. 

 

	 	(a)	 The Sponsor and each Insider hereby agree, with respect to itself, herself or himself, that in the event that
the Company fails to consummate its initial Business Combination within the time period set forth in the Charter, the Sponsor and each Insider shall take all reasonable steps to cause the Company to (i) cease all operations except for the
purpose of winding up; (ii) as promptly as reasonably possible but not more than 10 business days thereafter, redeem 100% of the Public Shares, at a per-share price, payable in cash, equal to the
aggregate amount then on deposit in the Trust Account, including interest earned on the funds held in the Trust Account and not previously release to the Company to pay taxes (less up to $100,000 of interest to pay dissolution expenses), divided by
the number of then outstanding Public Shares, which redemption will completely extinguish Public Shareholders’ rights as shareholders (including the right to receive further liquidation distributions, if any); and (iii) as promptly as
reasonably possible following such redemption, subject to the approval of the Company’s remaining shareholders and the Board, liquidate and dissolve, subject in each case to the Company’s obligations under Cayman Islands law to provide for
claims of creditors and in all cases subject to the other requirements of applicable law. The Sponsor and each Insider agree not to propose any amendment to the Charter (i) that would modify the substance or timing of the Company’s
obligation to provide holders of the Public Shares the right to have their shares redeemed in connection with an initial Business Combination or to redeem 100% of the Public Shares if the Company does not complete an initial Business Combination
within the required time period set forth in the Charter or (ii) with respect to any provision relating to the rights of holders of Public Shares unless the Company provides its Public Shareholders with the opportunity to redeem their Public
Shares upon approval of any such amendment at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest earned on the funds held in the Trust
Account and not previously released to the Company to pay taxes, if any, divided by the number of then-outstanding Public Shares. 

  

	 	(b)	 The Sponsor and each Insider, with respect to itself, herself or himself, acknowledges that it, she or he has
no right, title, interest or claim of any kind in or to any monies held in the Trust Account or any other asset of the Company as a 

  
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result of any liquidation of the Company with respect to the Founder Shares held by it, her or him, if any. The Sponsor and each of the Insiders hereby further waive, with respect to any Founder
Shares and Public Shares held by it, her or him, as applicable, any redemption rights it, she or he may have in connection with the consummation of a Business Combination, including, without limitation, any such rights available in the context of a
shareholder vote to approve such Business Combination or a shareholder vote to approve an amendment to the Charter (i) that would modify the substance or timing of the Company’s obligation to provide holders of the Public Shares the right
to have their shares redeemed in connection with an initial Business Combination or to redeem 100% of the Public Shares if the Company has not consummated an initial Business Combination within the time period set forth in the Charter or
(ii) with respect to any provision relating to the rights of holders of Public Shares (although the Sponsor and the Insiders shall be entitled to liquidation rights with respect to any Public Shares they hold if the Company fails to consummate
a Business Combination within the required time period set forth in the Charter). 

  

	5.	 Lock-up; Transfer Restrictions. 

 

	 	(a)	 The Sponsor and the Insiders agree that they shall not Transfer any Founder Shares (the “Founder
Shares Lock-up”) until the earliest of (A) one year after the completion of an initial Business Combination and (B) the date following the completion of an initial Business Combination
on which the Company completes a liquidation, merger, share exchange or other similar transaction that results in all of the Company’s shareholders having the right to exchange their Ordinary Shares for cash, securities or other property (the
“Founder Shares Lock-up Period”). Notwithstanding the foregoing, if, subsequent to a Business Combination, the closing price of the Ordinary Shares equals or exceeds $12.00 per share
(as adjusted for share sub-divisions, share capitalizations, share consolidations, reorganizations, recapitalizations and the like) for any 20 trading days within a
30-trading day period commencing at least 120 days after the Company’s initial Business Combination, the Founder Shares shall be released from the Founder Shares
Lock-up. 

  

	 	(b)	 The Sponsor and Insiders agree that they shall not effectuate any Transfer of Private Placement Warrants or
Ordinary Shares underlying such warrants until 30 days after the completion of an initial Business Combination. 

  

	 	(c)	 Notwithstanding the provisions set forth in paragraphs 5(a) and (b), Transfers of the Founder
Shares, Private Placement Warrants and Ordinary Shares underlying the Private Placement Warrants are permitted (a) to the Company’s officers or directors, any affiliates or family members of any of the Company’s officers or directors,
any direct or indirect members or partners of the Sponsor or their affiliates, or any employees of such affiliates; (b) in the case of an individual, by gift to a member of one of the individual’s immediate family or to a trust, the
beneficiary of which is a member of the individual’s immediate family, an affiliate of such person or to a charitable organization; (c) in the case of an 

  
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individual, by virtue of laws of descent and distribution upon death of the individual; (d) in the case of an individual, pursuant to a qualified domestic relations order; (e) by
private sales or transfers made in connection with the consummation of a Business Combination at prices no greater than the price at which the Founder Shares, Private Placement Warrants or Ordinary Shares, as applicable, were originally purchased;
(f) by virtue of the Sponsor’s organizational documents upon liquidation or dissolution of the Sponsor; (g) to the Company for no value for cancellation in connection with the consummation of an initial Business Combination,
(h) in the event of the Company’s liquidation prior to the completion of a Business Combination; or (i) in the event of completion of a liquidation, merger, share exchange or other similar transaction which results in all of the
Company’s Public Shareholders having the right to exchange their Ordinary Shares for cash, securities or other property subsequent to the completion of an initial Business Combination; provided, however, that in the case of
clauses (a) through (i) these permitted transferees must enter into a written agreement agreeing to be bound by these transfer restrictions. 

  

	 	(d)	 During the period commencing on the date of the Prospectus and ending 180 days after such date, the Sponsor and
each Insider shall not, without the prior written consent of the Representatives, Transfer any Units, Ordinary Shares, Warrants or any other securities convertible into, or exercisable or exchangeable for, Ordinary Shares held by it, her or him, as
applicable, subject to certain exceptions enumerated in Section 4(h) of the Underwriting Agreement. 

  

	6.	 Remedies. The Sponsor and each of the Insiders hereby agree and acknowledge that (i) each of the
Underwriters and the Company would be irreparably injured in the event of a breach by the Sponsor or such Insider of its, her or his obligations, as applicable under paragraphs 3, 4, 5, 6, 7, 10 and
11, (ii) monetary damages may not be an adequate remedy for such breach and (iii) the non-breaching party shall be entitled to injunctive relief, in addition to any other remedy that such party may
have in law or in equity, in the event of such breach. 

  

	7.	 Payments by the Company. Except as disclosed in the Prospectus, neither the Sponsor nor any affiliate of
the Sponsor nor any director or officer of the Company nor any affiliate of the officers shall receive from the Company any finder’s fee, reimbursement, consulting fee, monies in respect of any payment of a loan or other compensation prior to,
or in connection with any services rendered in order to effectuate the consummation of the Company’s initial Business Combination (regardless of the type of transaction that it is). 

 

	8.	 Director and Officer Liability Insurance. The Company will maintain an insurance policy or policies
providing directors’ and officers’ liability insurance, and the Insiders shall be covered by such policy or policies, in accordance with its or their terms, to the maximum extent of the coverage available for any of the Company’s
directors or officers. 

  

	9.	 Termination. This Letter Agreement shall terminate on the earlier of (i) the expiration of the
Founder Shares Lock-up Period and (ii) the liquidation of the Company. 

  
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	10.	 Indemnification. In the event of the liquidation of the Trust Account upon the failure of the Company to
consummate its initial Business Combination within the time period set forth in the Charter, the Sponsor (the “Indemnitor”) agrees to indemnify and hold harmless the Company against any and all loss, liability, claim, damage
and expense whatsoever (including, but not limited to, any and all legal or other expenses reasonably incurred in investigating, preparing or defending against any litigation, whether pending or threatened) to which the Company may become subject as
a result of any claim by (i) any third party for services rendered or products sold to the Company (except for the Company’s independent auditors) or (ii) any prospective target business with which the Company has discussed entering
into a transaction agreement (a “Target”); provided, however, that such indemnification of the Company by the Indemnitor (x) shall apply only to the extent necessary to ensure that such claims by a third
party for services rendered or products sold to the Company or a Target do not reduce the amount of funds in the Trust Account to below the lesser of (i) $10.00 per Public Share and (ii) the actual amount per Public Share held in the Trust
Account as of the date of the liquidation of the Trust Account if less than $10.00 per Public Share due to reductions in the value of the trust assets, in each case net of interest that may be withdrawn to pay the Company’s tax obligations,
(y) shall not apply to any claims by a third party or Target who executed a waiver of any and all rights to the monies held in the Trust Account (whether or not such waiver is enforceable) and (z) shall not apply to any claims under the
Company’s indemnity of the Underwriters against certain liabilities, including liabilities under the Securities Act of 1933, as amended. The Indemnitor shall have the right to defend against any such claim with counsel of its choice reasonably
satisfactory to the Company if, within 15 days following written receipt of notice of the claim to the Indemnitor, the Indemnitor notifies the Company in writing that it shall undertake such defense. 

 

	11.	 Forfeiture of Founder Shares. To the extent that the Underwriters do not exercise their option to
additional Units within 45 days from the date of the Prospectus in full (as further described in the Prospectus), the Sponsor agrees to automatically surrender to the Company for no consideration, for cancellation at no cost, an aggregate number of
Founder Shares so that the number of Founder Shares will equal of 20% of the sum of the total number of Ordinary Shares and Founder Shares outstanding at such time. The Sponsor and Insiders further agree that to the extent that the size of the
Public Offering is increased or decreased, the Company will effect a share capitalization or a share repurchase, as applicable, with respect to the Founder Shares immediately prior to the consummation of the Public Offering in such amount as to
maintain the number of Founder Shares at 20% of the sum of the total number of Ordinary Shares and Founder Shares outstanding at such time. 

  

	12.	 Entire Agreement. This Letter Agreement constitutes the entire agreement and understanding of the
parties hereto in respect of the subject matter hereof and supersedes all prior understandings, agreements, or representations by or among the parties hereto, written or oral, to the extent they relate in any way to the subject matter hereof or the
transactions contemplated hereby. This Letter Agreement may not be changed, amended, modified or waived (other than to correct a typographical error) as to any particular provision, except by a written instrument executed by (i) each Insider
that is the subject of any such change, amendment, modification or waiver, (ii) the Company and (iii) the Sponsor. 

  
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	13.	 Assignment. No party hereto may assign either this Letter Agreement or any of its rights, interests, or
obligations hereunder without the prior written consent of the other parties. Any purported assignment in violation of this paragraph shall be void and ineffectual and shall not operate to transfer or assign any interest or title to the purported
assignee. This Letter Agreement shall be binding on the Sponsor, each of the Insiders and each of their respective successors, heirs, personal representatives and assigns and permitted transferees. 

 

	14.	 Counterparts. This Letter Agreement may be executed in any number of original or facsimile counterparts,
and each of such counterparts shall for all purposes be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument. 

 

	15.	 Effect of Headings. The paragraph headings herein are for convenience only and are not part of this
Letter Agreement and shall not affect the interpretation thereof. 

  

	16.	 Severability. This Letter Agreement shall be deemed severable, and the invalidity or unenforceability of
any term or provision hereof shall not affect the validity or enforceability of this Letter Agreement or of any other term or provision hereof. Furthermore, in lieu of any such invalid or unenforceable term or provision, the parties hereto intend
that there shall be added as a part of this Letter Agreement a provision as similar in terms to such invalid or unenforceable provision as may be possible and be valid and enforceable. 

 

	17.	 Governing Law. This Letter Agreement shall be governed by and construed and enforced in accordance with
the laws of the State of New York, without giving effect to conflicts of law principles that would result in the application of the substantive laws of another jurisdiction. The parties hereto (i) all agree that any action, proceeding, claim or
dispute arising out of, or relating in any way to, this Letter Agreement shall be brought and enforced in the courts of New York City, in the State of New York, and irrevocably submit to such jurisdiction and venue, which jurisdiction and venue
shall be exclusive, and (ii) waive any objection to such exclusive jurisdiction and venue or that such courts represent an inconvenient forum. 

  

	18.	 Notices. Any notice, consent or request to be given in connection with any of the terms or provisions of
this Letter Agreement shall be in writing and shall be sent by express mail or similar private courier service, by certified mail (return receipt requested), by hand delivery or facsimile transmission. 

[Signature Page Follows] 

  
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	Sincerely,	 	
	
	SUPERNOVA PARTNERS II LLC
		
	By:	 	  

	Name:	 	Michael S. Clifton
	Title:	 	Chief Financial Officer
		
		 	  

		 	Spencer Rascoff
		
		 	  

		 	Robert Reid
		
		 	  

		 	Michael Clifton
		
		 	  

		 	Alexander Klabin
		
		 	  

		 	Katie Curnutte
		
		 	  

		 	Ken Fox
		
		 	  

		 	Damien Hooper-Campbell
		
		 	  

		 	Jim Lanzone
		
		 	  

		 	Gregg Renfrew
		
		 	  

		 	Rajeev Singh

  
 [Signature Page to Letter
Agreement] 

 Acknowledged and Agreed: 

SUPERNOVA PARTNERS ACQUISITION COMPANY II, LTD. 
  

					
		
	By:	 	 
		 	Name:	 	Michael S. Clifton
		 	Title:	 	Chief Financial Officer

  
 [Signature Page to Letter
Agreement]EX-10.2

 Exhibit 10.2 

INVESTMENT MANAGEMENT TRUST AGREEMENT 

This Investment Management Trust Agreement (this “Agreement”) is made effective as of [●], 2021 by and between
Supernova Partners Acquisition Company II, Ltd., a Cayman Islands exempted company (the “Company”), and American Stock Transfer & Trust Company, LLC (the “Trustee”). 

WHEREAS, the Company’s registration statement on Form S-1, File No. 333-252963 (the
“Registration Statement”) and prospectus (the “Prospectus”) for the initial public offering of the Company’s units (the “Units”), each of which consists of one of the
Company’s Class A ordinary shares, par value $0.0001 per share (the “Ordinary Shares”), and a fraction of one redeemable warrant, each whole warrant entitling the holder thereof to purchase one Ordinary Share (such
initial public offering hereinafter referred to as the “Offering”), has been declared effective as of the date hereof by the U.S. Securities and Exchange Commission; and 

WHEREAS, the Company has entered into an Underwriting Agreement (the “Underwriting Agreement”) with J.P. Morgan
Securities LLC and Jefferies LLC, as representatives (the “Representatives”) to the several underwriters (the “Underwriters”) named therein; and 

WHEREAS, as described in the Prospectus, $250,000,000 of the gross proceeds of the Offering and sale of the Private Placement Warrants (as
defined in the Underwriting Agreement) (or $287,500,000 if the Underwriters’ option to purchase additional units is exercised in full) will be delivered to the Trustee to be deposited and held in a segregated trust account located at all times
in the United States (the “Trust Account”) for the benefit of the Company and the holders of the Ordinary Shares included in the Units issued in the Offering as hereinafter provided (the amount to be delivered to the Trustee
(and any interest subsequently earned thereon) is referred to herein as the “Property,” the shareholders for whose benefit the Trustee shall hold the Property will be referred to as the “Public
Shareholders,” and the Public Shareholders and the Company will be referred to together as the “Beneficiaries”); and 

WHEREAS, pursuant to the Underwriting Agreement, a portion of the Property equal to $8,750,000, or $10,062,500 if the Underwriters’
option to purchase additional units is exercised in full, is attributable to deferred underwriting discounts and commissions that will be payable by the Company to the Underwriters upon the consummation of the Business Combination (as defined below)
(the “Deferred Discount”); and 
 WHEREAS, the Company and the Trustee desire to enter into this Agreement to set
forth the terms and conditions pursuant to which the Trustee shall hold the Property. 
 NOW THEREFORE, IT IS AGREED: 

1. Agreements and Covenants of Trustee. The Trustee hereby agrees and covenants to: 

(a) Hold the Property in trust for the Beneficiaries in accordance with the terms of this Agreement in the Trust Account established by the
Trustee in the United States at J.P. Morgan Chase Bank, N.A. (or at another U.S chartered commercial bank with consolidated assets of $100 billion or more) and at a brokerage institution selected by the Trustee that is reasonably satisfactory
to the Company; 

 (b) Manage, supervise and administer the Trust Account subject to the terms and conditions
set forth herein; 
 (c) In a timely manner, upon the written instruction of the Company, invest and reinvest the Property in United States
government securities within the meaning of Section 2(a)(16) of the Investment Company Act of 1940, as amended, having a maturity of 185 days or less, or in money market funds meeting the conditions of paragraphs (d)(1), (d)(2), (d)(3) and
(d)(4) of Rule 2a-7 promulgated under the Investment Company Act of 1940, as amended (or any successor rule), which invest only in direct U.S. government treasury obligations, as determined by the Company; the
Trustee may not invest in any other securities or assets, it being understood that the Trust Account will earn no interest while account funds are uninvested awaiting the Company’s instructions hereunder and the Trustee may earn bank credits or
other consideration; 
 (d) Collect and receive, when due, all principal, interest or other income arising from the Property, which shall
become part of the “Property,” as such term is used herein; 
 (e) Promptly notify the Company and the
Representatives of all communications received by the Trustee with respect to any Property requiring action by the Company; 
 (f) Supply
any necessary information or documents as may be requested by the Company (or its authorized agents) in connection with the Company’s preparation of the tax returns relating to assets held in the Trust Account or in connection with the
preparation or completion of the audit of the Company’s financial statements by the Company’s auditors; 
 (g) Participate in any
plan or proceeding for protecting or enforcing any right or interest arising from the Property if, as and when instructed by the Company to do so; 

(h) Render to the Company monthly written statements of the activities of, and amounts in, the Trust Account reflecting all receipts and
disbursements of the Trust Account; 
 (i) Commence liquidation of the Trust Account only after and promptly after (x) receipt of, and
only in accordance with, the terms of a letter from the Company (“Termination Letter”) in a form substantially similar to that attached hereto as either Exhibit A or Exhibit B, as applicable,
signed on behalf of the Company by its Chief Executive Officer, President, Chief Operating Officer, Chairman or Co-Chaiman or other authorized officer of the Company, and complete the liquidation of the Trust
Account and distribute the Property in the Trust Account, including interest earned on the funds held in the Trust Account and not previously released to us to pay our taxes (less up to $100,000 of interest to pay dissolution expenses), only as
directed in the Termination Letter and the other documents referred to therein, or (y) upon the date which is the later of (1) 24 months after the closing of the Offering and (2) such later date as may be approved by the Company’s
shareholders in accordance with the Company’s amended and restated memorandum and articles of association, if a Termination Letter has not been received by the Trustee prior to such date, in which case the Trust Account shall be liquidated in
accordance with the procedures set forth in the Termination Letter attached as Exhibit B and the Property in the Trust Account, including interest earned on the funds held in the Trust Account

 
and not previously released to the Company to pay its taxes (less up to $100,000 of interest to pay dissolution expenses), shall be distributed to the Public Shareholders of record as of such
date It is acknowledged and agreed that there should be no reduction in the principal amount per share initially deposited in the Trust Account; 

(j) Upon written request from the Company, which may be given from time to time in a form substantially similar to that attached hereto as
Exhibit C (a “Tax Payment Withdrawal Instruction”), withdraw from the Trust Account and distribute to the Company the amount of interest earned on the Property requested by the Company to cover any tax obligation owed
by the Company as a result of assets of the Company or interest or other income earned on the Property, which amount shall be delivered directly to the Company by electronic funds transfer or other method of prompt payment, and the Company shall
forward such payment to the relevant taxing authority, so long as there is no reduction in the principal amount per share initially deposited in the Trust Account; provided, however, that to the extent there is not sufficient cash in
the Trust Account to pay such tax obligation, the Trustee shall liquidate such assets held in the Trust Account as shall be designated by the Company in writing to make such distribution (it being acknowledged and agreed that any such amount in
excess of interest income earned on the Property shall not be payable from the Trust Account). The written request of the Company referenced above shall constitute presumptive evidence that the Company is entitled to said funds, and the Trustee
shall have no responsibility to look beyond said request; 
 (k) Upon written request from the Company, which may be given from time to time
in a form substantially similar to that attached hereto as Exhibit D, the Trustee shall distribute to the remitting brokers on behalf of Public Shareholders redeeming Ordinary Shares the amount required to pay redeemed Ordinary Shares
from Public Shareholders pursuant to the Company’s amended and restated memorandum and articles of association; and 
 (l) Not make any
withdrawals or distributions from the Trust Account other than pursuant to Section 1(i), (j) or (k) above. 

2. Agreements and Covenants of the Company. The Company hereby agrees and covenants to: 

(a) Give all instructions to the Trustee hereunder in writing, signed by the Company’s Chairman or
Co-Chairman, Chief Executive Officer, President, Chief Operating Officer or other authorized officer of the Company. In addition, except with respect to its duties under Sections
1(i), (j) or (k) hereof, the Trustee shall be entitled to rely on, and shall be protected in relying on, any verbal or telephonic advice or instruction which it, in good faith and with reasonable care, believes
to be given by any one of the persons authorized above to give written instructions, provided that the Company shall promptly confirm such instructions in writing; 

(b) Subject to Section 4 hereof, hold the Trustee harmless and indemnify the Trustee from and against any and all documented
expenses, including reasonable outside counsel fees and disbursements, or losses suffered by the Trustee in connection with any action taken by it hereunder and in connection with any action, suit or other proceeding brought against the Trustee
involving any claim, or in connection with any claim or demand, which in any way arises out of or relates to this Agreement, the services of the Trustee hereunder, or the Property or any interest earned on the Property, except for expenses and
losses resulting from the Trustee’s gross 

 
negligence, fraud or willful misconduct. Promptly after the receipt by the Trustee of notice of demand or claim or the commencement of any action, suit or proceeding, pursuant to which the
Trustee intends to seek indemnification under this Section 2(b), it shall notify the Company in writing of such claim (hereinafter referred to as the “Indemnified Claim”). The Trustee shall have the right to conduct
and manage the defense against such Indemnified Claim; provided that the Trustee shall obtain the consent of the Company with respect to the selection of counsel, which consent shall not be unreasonably withheld. The Trustee may not agree to settle
any Indemnified Claim without the prior written consent of the Company, which such consent shall not be unreasonably withheld. The Company may participate in such action with its own counsel; 

(c) Pay the Trustee the fees set forth on Schedule A hereto, including an initial acceptance fee, annual administration fee, and
transaction processing fee which fees shall be subject to modification by the parties from time to time. It is expressly understood that the Property shall not be used to pay such fees unless and until it is distributed to the Company pursuant to
Sections 1(i) through 1(k) hereof. The Company shall pay the Trustee the initial acceptance fee and the first annual administration fee at the consummation of the Offering. The Company shall not be responsible for any other fees
or charges of the Trustee except as set forth in this Section 2(c) and as may be provided in Section 2(b) hereof; 
 (d)
In connection with any vote of the Company’s shareholders regarding a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination involving the Company and one or more businesses (the
“Business Combination”), provide to the Trustee an affidavit or certificate of the inspector of elections for the shareholder meeting verifying the vote of such shareholders regarding such Business Combination; 

(e) Provide the Representatives with a copy of any Termination Letter(s) and/or any other correspondence that is sent to the Trustee with
respect to any proposed withdrawal from the Trust Account promptly after it issues the same; 
 (f) Unless otherwise agreed between the
Company and the Representatives, ensure that any Instruction Letter (as defined in Exhibit A) delivered in connection with a Termination Letter in the form of Exhibit A expressly provides that the Deferred Discount is paid directly to
the account or accounts directed by the Representatives on behalf of the Underwriters prior to any transfer of the funds held in the Trust Account to the Company or any other person; 

(g) Instruct the Trustee to make only those distributions that are permitted under this Agreement, and refrain from instructing the Trustee to
make any distributions that are not permitted under this Agreement; 
 (h) If the Company seeks to amend any provisions of its amended and
restated memorandum and articles of association (A) to modify the substance or timing of the Company’s obligation to provide holders of the Ordinary Shares the right to have their shares redeemed in connection with the Company’s
initial Business Combination or to redeem 100% of the Ordinary Shares if the Company does not complete its initial Business Combination within the time period set forth therein or (B) with respect to any other provision relating to the rights
of holders of the Ordinary Shares (in each case, an “Amendment”), the Company will provide the Trustee with a letter in the form of Exhibit D providing instructions for the distribution of funds to Public Shareholders
who exercise their redemption option in connection with such Amendment; and 

 (i) Within five (5) business days after the Underwriters exercise their option to
purchase additional units (or any unexercised portion thereof) or such option to purchase additional units expires, provide the Trustee with a notice in writing of the total amount of the Deferred Discount. 

3. Limitations of Liability. The Trustee shall have no responsibility or liability to: 

(a) Imply obligations, perform duties, inquire or otherwise be subject to the provisions of any agreement or document other than this
Agreement and that which is expressly set forth herein; 
 (b) Take any action with respect to the Property, other than as directed in
Section 1 hereof, and the Trustee shall have no liability to any third party except for liability arising out of the Trustee’s gross negligence, fraud or willful misconduct; 

(c) Institute any proceeding for the collection of any principal and income arising from, or institute, appear in or defend any proceeding of
any kind with respect to, any of the Property unless and until it shall have received written instructions from the Company given as provided herein to do so and the Company shall have advanced or guaranteed to it funds sufficient to pay any
expenses incident thereto; 
 (d) Change the investment of any Property, other than in compliance with Section 1 hereof; 

(e) Refund any depreciation in principal of any Property; 

(f) Assume that the authority of any person designated by the Company to give instructions hereunder shall not be continuing unless provided
otherwise in such designation, or unless the Company shall have delivered a written revocation of such authority to the Trustee; 
 (g) The
other parties hereto or to anyone else for any action taken or omitted by it, or any action suffered by it to be taken or omitted, in good faith and in the Trustee’s best judgment, except for the Trustee’s gross negligence, fraud or
willful misconduct. The Trustee may rely conclusively and shall be protected in acting upon any order, notice, demand, certificate, opinion or advice of counsel (including counsel chosen by the Trustee, which counsel may be the Company’s
counsel), statement, instrument, report or other paper or document (not only as to its due execution and the validity and effectiveness of its provisions, but also as to the truth and acceptability of any information therein contained) which the
Trustee believes, in good faith and with reasonable care, to be genuine and to be signed or presented by the proper person or persons. The Trustee shall not be bound by any notice or demand, or any waiver, modification, termination or rescission of
this Agreement or any of the terms hereof, unless evidenced by a written instrument delivered to the Trustee, signed by the proper party or parties and, if the duties or rights of the Trustee are affected, unless it shall give its prior written
consent thereto; 
 (h) Verify the accuracy of the information contained in the Registration Statement; 

 (i) Provide any assurance that any Business Combination entered into by the Company or any
other action taken by the Company is as contemplated by the Registration Statement; 
 (j) File information returns with respect to the
Trust Account with any local, state or federal taxing authority or provide periodic written statements to the Company documenting the taxes payable by the Company, if any, relating to any interest income earned on the Property; 

(k) Prepare, execute and file tax reports, income or other tax returns and pay any taxes with respect to any income generated by, and
activities relating to, the Trust Account, regardless of whether such tax is payable by the Trust Account or the Company, including, but not limited to, tax obligations, except pursuant to Section 1(j) hereof; or 

(l) Verify calculations, qualify or otherwise approve the Company’s written requests for distributions pursuant to Sections
1(i), 1(j) or 1(k) hereof. 
 4. Trust Account Waiver. The Trustee has no right of set-off or any right, title, interest or claim of any kind (“Claim”) to, or to any monies in, the Trust Account, and hereby irrevocably waives any Claim to, or to any monies in, the Trust
Account that it may have now or in the future. In the event the Trustee has any Claim against the Company under this Agreement, including, without limitation, under Section 2(b) or Section 2(c) hereof, the
Trustee shall pursue such Claim solely against the Company and its assets outside the Trust Account and not against the Property or any monies in the Trust Account. 

5. Termination. This Agreement shall terminate as follows: 

(a) If the Trustee gives written notice to the Company that it desires to resign under this Agreement, the Company shall use its reasonable
efforts to locate a successor trustee, pending which the Trustee shall continue to act in accordance with this Agreement. At such time that the Company notifies the Trustee that a successor trustee has been appointed by the Company and has agreed to
become subject to the terms of this Agreement, the Trustee shall transfer the management of the Trust Account to the successor trustee, including but not limited to the transfer of copies of the reports and statements relating to the Trust Account,
whereupon this Agreement shall terminate; provided, however, that in the event that the Company does not locate a successor trustee within ninety (90) days of receipt of the resignation notice from the Trustee, the
Trustee may submit an application to have the Property deposited with any court in the State of New York or with the United States District Court for the Southern District of New York and upon such deposit, the Trustee shall be immune from any
liability whatsoever; or 
 (b) At such time that the Trustee has completed the liquidation of the Trust Account and its obligations in
accordance with the provisions of Section 1(i) hereof and distributed the Property in accordance with the provisions of the Termination Letter, this Agreement shall terminate except with respect to Section 2(b). 

6. Miscellaneous. 
 (a) The Company and
the Trustee each acknowledge that the Trustee will follow the security procedures set forth below with respect to funds transferred from the Trust Account. The Company and the Trustee will each restrict access to confidential information relating to
such 

 
security procedures to authorized persons. Each party must notify the other party immediately if it has reason to believe unauthorized persons may have obtained access to such confidential
information, or of any change in its authorized personnel. In executing funds transfers, the Trustee shall rely upon all information supplied to it by the Company, including, account names, account numbers, and all other identifying information
relating to a Beneficiary, Beneficiary’s bank or intermediary bank. Except for any liability arising out of the Trustee’s gross negligence, fraud or willful misconduct, the Trustee shall not be liable for any loss, liability or expense
resulting from any error in the information or transmission of the funds. 
 (b) This Agreement shall be governed by and construed and
enforced in accordance with the laws of the State of New York, without giving effect to conflicts of law principles that would result in the application of the substantive laws of another jurisdiction. This Agreement may be executed in several
original or facsimile counterparts, each one of which shall constitute an original, and together shall constitute but one instrument. 
 (c)
This Agreement contains the entire agreement and understanding of the parties hereto with respect to the subject matter hereof. Except for Section 1(i), 1(j) and 1(k) hereof (which sections may not be modified, amended or
deleted without the affirmative vote of sixty-five percent (65%) of the then outstanding Ordinary Shares and Class B ordinary shares, par value $0.0001 per share, of the Company, voting together as a single class; provided that no such
amendment will affect any Public Shareholder who has properly elected to redeem his or her Ordinary Shares in connection with a shareholder vote to amend this Agreement to modify the substance or timing of the Company’s obligation to provide
for the redemption of the Public Shares in connection with an initial Business Combination or an Amendment or to redeem 100% of its Ordinary Shares if the Company does not complete its initial Business Combination within the time frame specified in
the Company’s amended and restated memorandum and articles of association), this Agreement or any provision hereof may only be changed, amended or modified (other than to correct a typographical error) by a writing signed by each of the parties
hereto. 
 (d) The parties hereto consent to the jurisdiction and venue of any state or federal court located in the City of New York, State
of New York, for purposes of resolving any disputes hereunder. AS TO ANY CLAIM, CROSS-CLAIM OR COUNTERCLAIM IN ANY WAY RELATING TO THIS AGREEMENT, EACH PARTY WAIVES THE RIGHT TO TRIAL BY JURY. 

(e) Any notice, consent or request to be given in connection with any of the terms or provisions of this Agreement shall be in writing and
shall be sent by express mail or similar private courier service, by certified mail (return receipt requested), by hand delivery or by electronic mail: 

if to the Trustee, to: 

American Stock Transfer & Trust Company, LLC 

6201 15th Ave. 
 Brooklyn, New
York 11219 
 Attn: Relationship Management 

Email: admin12@astfinancial.com 

 if to the Company, to: 

 
 Supernova Partners Acquisition Company II, Ltd. 

4301 50th Street NW 
 Suite 300
PMB 1044 
 Washington, D.C. 20016 

Attn: Michael S. Clifton 
 Email:
michael@supernovaspac.com 
 with copies to: 

Latham & Watkins LLP 

555 Eleventh Street, NW, Suite 1000 

Washington, D.C. 20004 
 Attn:
Patrick H. Shannon; Jason M. Licht 
 Email: patrick.shannon@lw.com 

jason.licht@lw.com 
 and 

Latham & Watkins LLP 

811 Main Street, Suite 3700 

Houston, Texas 77002 
 Attn: Ryan
J. Maierson 
 Email: ryan.maierson@lw.com 

and 
 if to the Underwriters, to:

 J.P. Morgan Securities LLC 

383 Madison Avenue 
 New York, New
York 10179 
 Attn: Equity Syndicate Desk 

and 
 Jefferies LLC 

520 Madison Avenue 
 New York, New
York 10022 
 Attention: General Counsel 

(f) Each of the Company and the Trustee hereby represents that it has the full right and power and has been duly authorized to enter into this
Agreement and to perform its respective obligations as contemplated hereunder. The Trustee acknowledges and agrees that it shall not make any claims or proceed against the Trust Account, including by way of
set-off, and shall not be entitled to any funds in the Trust Account under any circumstance. 

 (g) This Agreement is the joint product of the Trustee and the Company and each provision
hereof has been subject to the mutual consultation, negotiation and agreement of such parties and shall not be construed for or against any party hereto. 

(h) This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all such counterparts
shall together constitute one and the same instrument. Delivery of a signed counterpart of this Agreement by facsimile or electronic transmission shall constitute valid and sufficient delivery thereof. 

(i) Each of the Company and the Trustee hereby acknowledges and agrees that the Representatives on behalf of the Underwriters are a
third-party beneficiary of this Agreement. 
 (j) Except as specified herein, no party to this Agreement may assign its rights or delegate
its obligations hereunder to any other person or entity. 
 [Signature Page Follows] 

 IN WITNESS WHEREOF, the parties have duly executed this Investment Management Trust
Agreement as of the date first written above. 
  

			
	AMERICAN STOCK TRANSFER & TRUST
	COMPANY, LLC as Trustee
		
	By:	 	  

	Name:	 	
	Title:	 	

  

			
	SUPERNOVA PARTNERS ACQUISITION COMPANY II, LTD.
		
	By:	 	  

	Name:	 	Michael S. Clifton
	Title:	 	Chief Financial Officer

  
 [Signature Page to
Investment Management Trust Agreement] 

 SCHEDULE A 
  

							
	 Fee Item
	  	 Time and method of payment
	  	Amount	 
	 Initial acceptance fee
	  	Initial closing of IPO by wire transfer	  	$	3,500.00	 
	 Annual fee
	  	First year, initial closing of IPO by wire transfer; thereafter on the anniversary of the effective date of the IPO by wire transfer or check	  	$	10,000.00	 
	 Transaction processing fee for disbursements to Company under Sections 1(i), (j), and (k)
	  	Billed by Trustee to Company under Section 1	  	$	250.00	 
	 Paying Agent services as required pursuant to Section 1(i) and 1(k)
	  	Billed to Company upon delivery of service pursuant to Section 1(i) and 1(k)	  	 	Prevailing rates	 

 EXHIBIT A 

[Letterhead of Company] 
 [Insert
date] 
 American Stock Transfer & Trust Company, LLC 

6201 15th Ave. 
 Brooklyn, New York 11219 

Attn: Relationship Management 
 Re: Trust
Account—Termination Letter 
 Dear [●]: 

Pursuant to Section 1(i) of the Investment Management Trust Agreement between Supernova Partners Acquisition Company II, Ltd. (the
“Company”) and American Stock Transfer & Trust Company (“Trustee”), dated as of [●], 2021 (the “Trust Agreement”), this is to advise you that the Company has
entered into an agreement with                              (the “Target
Business”) to consummate a business combination with Target Business (the “Business Combination”) on or about [insert date]. The Company shall notify you at least
seventy-two (72) hours in advance of the actual date (or such shorter time period as you may agree) of the consummation of the Business Combination (the “Consummation Date”).
Capitalized terms used but not defined herein shall have the meanings set forth in the Trust Agreement. 
 In accordance with the terms of the Trust
Agreement, we hereby authorize you to commence to liquidate all of the assets of the Trust Account, and to transfer the proceeds into the trust operating account at J.P. Morgan Chase Bank, N.A. to the effect that, on the Consummation Date, all of
the funds held in the Trust Account will be immediately available for transfer to the account or accounts that the Representatives (with respect to the Deferred Discount) and the Company shall direct on the Consummation Date. It is acknowledged and
agreed that while the funds are on deposit in said trust operating account at J.P. Morgan Chase Bank, N.A. awaiting distribution, neither the Company nor the Representatives will earn any interest or dividends. 

On the Consummation Date (i) counsel for the Company shall deliver to you written notification that the Business Combination has been consummated, or
will be consummated substantially concurrently with your transfer of funds to the accounts as directed by the Company (the “Notification”), and (ii) the Company shall deliver to you (a) a certificate by the Chief
Executive Officer, Chief Financial Officer or other authorized officer of the Company, which verifies that the Business Combination has been approved by a vote of the Company’s shareholders, if a vote is held and (b) joint written
instruction signed by the Company and the Representatives with respect to the transfer of the funds held in the Trust Account, including payment of the Deferred Discount from the Trust Account (the “Instruction Letter”). You
are hereby directed and authorized to transfer the funds held in the Trust Account immediately upon your receipt of the Notification and the Instruction Letter, in accordance with the terms of the Instruction Letter. In the event that certain
deposits held in the Trust Account may not be liquidated by the Consummation Date without penalty, you will notify the Company in writing of the same and the Company shall direct you as to whether such funds should remain in the

 
Trust Account and be distributed after the Consummation Date to the Company. Upon the distribution of all the funds, net of any payments necessary for reasonable unreimbursed expenses related to
liquidating the Trust Account, your obligations under the Trust Agreement shall be terminated. 
 In the event that the Business Combination
is not consummated on the Consummation Date described in the notice thereof and we have not notified you on or before the original Consummation Date of a new Consummation Date, then upon receipt by the Trustee of written instructions from the
Company, the funds held in the Trust Account shall be reinvested as provided in Section 1(c) of the Trust Agreement on the business day immediately following the Consummation Date as set forth in such notice as soon
thereafter as possible. 
  

			
	Very truly yours,
	
	Supernova Partners Acquisition Company II, Ltd.
		
	By:	 	  

	Name:	 	
	Title:	 	

  

	cc:	 [●] 

 EXHIBIT B 

[Letterhead of Company] 
 [Insert
date] 
 American Stock Transfer & Trust Company, LLC 

6201 15th Ave. 
 Brooklyn, New York 11219 

Attn: Relationship Management 
 Re: Trust
Account—Termination Letter 
 Ladies and Gentlemen: 

Pursuant to Section 1(i) of the Investment Management Trust Agreement between Supernova Partners Acquisition Company, II Ltd. (the
“Company”) and American Stock Transfer & Trust Company (the “Trustee”), dated as of [●], 2021 (the “Trust Agreement”), this is to advise you that the Company has
been unable to effect a business combination with a Target Business (the “Business Combination”) within the time frame specified in the Company’s Amended and Restated Memorandum and Articles of Association, as described
in the Company’s Prospectus relating to the Offering. Capitalized terms used but not defined herein shall have the meanings set forth in the Trust Agreement. 

In accordance with the terms of the Trust Agreement, we hereby authorize you to liquidate all of the assets in the Trust Account and to transfer the
total proceeds into the trust operating account at J.P. Morgan Chase Bank, N.A. to await distribution to the Public Shareholders. The Company has selected
                 as the effective date for the purpose of determining the Public Shareholders that will be entitled to receive their share of the liquidation
proceeds. It is acknowledged that no interest will be earned by the Company on the liquidation proceeds while on deposit in the trust operating account You agree to be the Paying Agent of record and, in your separate capacity as Paying Agent, agree
to distribute said funds directly to the Company’s Public Shareholders in accordance with the terms of the Trust Agreement and the Amended and Restated Memorandum and Articles of Association of the Company. Upon the distribution of all the
funds, net of any payments necessary for reasonable unreimbursed expenses related to liquidating the Trust Account, your obligations under the Trust Agreement shall be terminated, except to the extent otherwise provided in Section
1(j) of the Trust Agreement. 
  

			
	Very truly yours,
	
	Supernova Partners Acquisition Company II, Ltd.
		
	By:	 	  

	Name:	 	
	Title:	 	

  

	cc:	 [●] 

 EXHIBIT C 

[Letterhead of Company] 
 [Insert
date] 
 American Stock Transfer & Trust Company, LLC 

6201 15th Ave. 
 Brooklyn, New York 11219 

Attn: Relationship Management 
 Re: Trust
Account—Tax Payment Withdrawal Instruction 
 Ladies and Gentlemen: 

Pursuant to Section 1(j) of the Investment Management Trust Agreement between Supernova Partners Acquisition Company II, Ltd. (the
“Company”) and American Stock Transfer & Trust Company (the “Trustee”), dated as of [●], 2021 (the “Trust Agreement”), the Company hereby requests that you
deliver to the Company $                 of the interest income earned on the Property as of the date hereof. Capitalized terms used but not defined herein shall
have the meanings set forth in the Trust Agreement. 
 The Company needs such funds to pay for the tax obligations as set forth on the attached tax return
or tax statement. In accordance with the terms of the Trust Agreement, you are hereby directed and authorized to transfer (via wire transfer) such funds promptly upon your receipt of this letter to the Company’s operating account at: 

 

			
	[WIRE INSTRUCTION INFORMATION]
	
	Very truly yours,
	
	Supernova Partners Acquisition Company II, Ltd.
		
	By:	 	  

	Name:	 	
	Title:	 	

  

	cc:	 [●] 

 EXHIBIT D 

[Letterhead of Company] 
 [Insert
date] 
 American Stock Transfer & Trust Company, LLC 

6201 15th Ave. 
 Brooklyn, New York 11219 

Attn: Relationship Management 
 Re: Trust
Account—Tax Payment Withdrawal Instruction 
 Ladies and Gentlemen: 

Pursuant to Section 1(k) of the Investment Management Trust Agreement between Supernova Partners Acquisition Company II, Ltd. (the
“Company”) and Continental Stock Transfer & Trust Company (the “Trustee”), dated as of [●], 2021 (the “Trust Agreement”), the Company hereby requests that you
deliver to the Company’s shareholders $                 of the principal and interest income earned on the Property as of the date hereof. Capitalized terms
used but not defined herein shall have the meanings set forth in the Trust Agreement. 
 Pursuant to Section 1(k) of the Trust Agreement, this is to
advise you that the Company has sought an Amendment. Accordingly, in accordance with the terms of the Trust Agreement, we hereby authorize you to liquidate a sufficient portion of the Trust Account and to transfer $[•] of the proceeds of the
Trust Account to the trust operating account at J.P. Morgan Chase Bank, N.A. for distribution to the shareholders that have requested redemption of their shares in connection with such Amendment. 

 

			
	Very truly yours,
	
	Supernova Partners Acquisition Company II, Ltd.
		
	By:	 	  

	Name:	 	
	Title:	 	

  

	cc:	 [●]

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