Document:

EX-10.6

 Exhibit 10.6 

Denham Sustainable Performance Acquisition Corp 

PO Box 309, Ugland House 
 Grand
Cayman 
 KY1-1104 

Cayman Islands 
 February 19,
2021 
 Denham SPAC Sponsor I LLC 
 PO Box 309, Ugland House

 Grand Cayman 

KY1-1104 
 Cayman Islands

  

	 	RE:	 Securities Subscription Agreement 

Ladies and Gentlemen: 
 Denham Sustainable
Performance Acquisition Corp., a Cayman Islands exempted company (the “Company,” “we” or “us”), is pleased to accept the offer made by Denham SPAC Sponsor I LLC, a Cayman
Islands limited liability company (“Subscriber” or “you”), to purchase 5,750,000 Class B ordinary shares of the Company (the “Shares”), par value $0.0001 per share, up to
750,000 of which are subject to forfeiture by you to the extent that the underwriters of the initial public offering (“IPO”) of the Company’s units, each comprised of one Class A ordinary share and one, or a portion
of one, warrant to purchase one Class A ordinary share (“Units”), do not fully exercise their option to purchase additional Units to cover over-allotments, if any (the “Over-allotment Option”).
The terms of the sale by the Company of the Shares to Subscriber, and the Company and Subscriber’s agreements regarding the Shares, are as follows: 

1. Purchase of Securities. For the sum of $25,000 (the “Purchase Price”), which the Company acknowledges receiving in cash, the Company
hereby issues the Shares to Subscriber, and Subscriber hereby purchases the Shares from the Company, on the terms and subject to the conditions, including regarding forfeiture, set forth in this letter agreement (this
“Agreement”). Concurrently with Subscriber’s execution of this Agreement, the Company shall, at its option, deliver to Subscriber a certificate registered in Subscriber’s name representing the shares (the
“Original Certificate”) or effect such delivery in book-entry form. 
 2. Representations, Warranties and Agreements. 

2.1. Subscriber’s Representations, Warranties and Agreements. To induce the Company to issue the Shares to Subscriber, Subscriber
hereby represents and warrants to the Company and agrees with the Company as follows: 
 2.1.1. Organization and Authority. Subscriber
is a Cayman Islands limited liability company, duly formed and registered, validly existing and in good standing under the laws of the Cayman Islands, and possesses all requisite power and authority necessary to carry out the transactions
contemplated by this Agreement. This Agreement is a legal, valid and binding agreement of Subscriber, enforceable against Subscriber in accordance with its terms, except as such enforceability may be limited by applicable bankruptcy, insolvency,
fraudulent conveyance or similar laws affecting the enforcement of creditors’ rights generally and subject to general principles of equity (regardless of whether enforcement is sought in a proceeding at law or in equity). 

 2.1.2. No Conflicts; No Consents. The execution, delivery and performance by
Subscriber of this Agreement does not, and the consummation by Subscriber of the transactions contemplated hereby will not, (a) violate, conflict with or constitute a default under the formation, governing or other organizational documents of
Subscriber, (b) violate, conflict with or constitute a default under any agreement, indenture or instrument to which Subscriber is a party, (c) violate, conflict with or constitute a default under any law, statute, rule, regulation, order,
judgment or decree to which Subscriber is subject, or (d) require the consent or approval of any governmental, administrative or other third-party. 

2.1.3. Experience, Financial Capability and Suitability. Subscriber has such knowledge, skill and experience in business, financial and
investment matters that it is capable of evaluating the merits and risks of an investment in the Shares. Subscriber acknowledges that the Shares have not been registered under the Securities Act of 1933, as amended (the “Securities
Act”), and therefore cannot be sold unless subsequently registered under the Securities Act or an exemption from such registration requirements is available. Subscriber understands that it must bear the economic risk of this investment
until the Shares are sold pursuant to: (a) an effective registration statement under the Securities Act; or (b) an exemption from such registration requirements is available with respect to such sale. Subscriber is able to bear the
economic risk of an investment in the Shares for an indefinite period of time and to afford a complete loss of Subscriber’s investment in the Shares. 

2.1.4. No Government Recommendation or Approval. Subscriber understands that no federal or state agency has passed upon or made any
recommendation or endorsement of the offering of the Shares. 
 2.1.5. Access to Information; Independent Investigation. Prior to the
execution of this Agreement, Subscriber has had the opportunity to ask questions of and receive answers from representatives of the Company concerning an investment in the Company, as well as the financial condition, business and prospects of the
Company, and the opportunity to obtain additional information to verify the accuracy of all information so obtained. In determining whether to make this investment, Subscriber has relied solely on Subscriber’s own knowledge and understanding of
the Company and its business based upon Subscriber’s own due diligence investigation. Subscriber understands that no person has been authorized to make any representations on behalf of the Company other than as set forth in this Agreement and
Subscriber has not relied on any other written or oral representations relating to the financial condition, business and prospects of the Company in making its investment decision. 

2.1.6. Investment Representations. Subscriber represents that it is an “accredited investor” as such term is defined in Rule
501(a) of Regulation D under the Securities Act and acknowledges the sale contemplated hereby is being made in reliance on the private placement exemption in Section 4(a)(2) of the Securities Act and Regulation D and similar exemptions under
state law. Subscriber is purchasing the Shares solely for investment purposes, for Subscriber’s own account and not for the account or benefit of any other person, and not with a view towards the distribution or dissemination thereof.
Subscriber did not decide to enter into this Agreement as a result of any general solicitation or general advertising within the meaning of Rule 502 under the Securities Act. 

2.1.7. Restrictions on Transfer; Shell Company. Subscriber understands the Shares are being offered in a transaction not involving a
public offering within the meaning of the Securities Act. Subscriber understands the Shares will be “restricted securities” within the meaning of Rule 144(a)(3) under the Securities Act, and Subscriber understands that the certificates or
book-entries representing the Shares will contain a legend or notation in respect of such restrictions. If, in the future, Subscriber decides to offer, 

  
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resell, pledge or otherwise transfer the Shares, such Shares may be offered, resold, pledged or otherwise transferred only pursuant to: (a) an effective registration statement under the
Securities Act; or (b) an exemption from registration available with respect to such offer, sale, pledge or other transfer. Subscriber agrees that if any transfer of its Shares or any interest therein is proposed to be made, as a condition
precedent to any such transfer, Subscriber may be required to deliver to the Company an opinion of counsel satisfactory to the Company. Absent registration or available exemption, Subscriber agrees not to resell the Shares. Subscriber further
acknowledges that because the Company is a shell company, Rule 144 may not be available to Subscriber for the resale of the Shares until one year following consummation of the initial business combination of the Company, despite the release or
waiver of any contractual transfer restrictions. 
 2.1.8. No Brokers. No broker, finder or other financial consultant has acted on
behalf of Subscriber in connection with this Agreement or the transactions contemplated hereby in such a way as to create any liability for the Company. 

2.2. Company’s Representations, Warranties and Agreements. To induce Subscriber to purchase the Shares, the Company hereby
represents and warrants to Subscriber and agrees with Subscriber as follows: 
 2.2.1. Organization and Authority. The Company is a
Cayman Islands exempted company, and possesses all requisite power and authority necessary to carry out the transactions contemplated by this Agreement. This Agreement is a legal, valid and binding agreement of the Company, enforceable against the
Company in accordance with its terms, except as such enforceability may be limited by applicable bankruptcy, insolvency, fraudulent conveyance or similar laws affecting the enforcement of creditors’ rights generally and subject to general
principles of equity (regardless of whether enforcement is sought in a proceeding at law or in equity). 
 2.2.2. No Conflicts. The
execution, delivery and performance by the Company of this Agreement does not, and the consummation by the Company of the transactions contemplated hereby will not, (a) violate, conflict with or constitute a default under the formation,
governing or other organizational documents of the Company, (b) violate, conflict with or constitute a default under any agreement, indenture or instrument to which the Company is a party, (c) violate, conflict with or constitute a default
under any law, statute, rule, regulation, order, judgment or decree to which the Company is subject, or (d) require the consent or approval of any governmental, administrative or other third-party. 

2.2.3. Title to Securities. Upon issuance in accordance with, and payment of the Purchase Price pursuant to, the terms hereof,
(a) the Shares will be duly and validly issued, fully paid and nonassessable; and (b) Subscriber will have or receive good title to the Shares, free and clear of all liens, claims and encumbrances of any kind, other than (i) transfer
restrictions hereunder and other agreements to which the Shares may become subject, (ii) transfer restrictions under federal and state securities laws, and (iii) liens, claims or encumbrances imposed due to the actions of Subscriber. 

2.2.4. No Brokers. No broker, finder or other financial consultant has acted on behalf of the Company in connection with this Agreement
or the transactions contemplated hereby in such a way as to create any liability for Subscriber. 

  
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 3. Forfeiture of Shares. 

3.1. Partial or No Exercise of the Over-allotment Option. In the event the Over-allotment Option is not exercised in full, Subscriber
acknowledges and agrees that it (or, if applicable, it and/or any transferees of Shares) shall forfeit any and all rights to such number of Shares (up to an aggregate of 937,500 Shares (as such amount may be adjusted for share splits, share
dividends, reorganizations, recapitalizations and the like) and pro rata based upon the percentage of the Over-allotment Option exercised) such that immediately following such forfeiture, Subscriber (and all other initial shareholders of the Company
prior to the IPO, if any) will own an aggregate number of Shares equal to 20% of the issued and outstanding Shares immediately following the IPO. 

3.2. Termination of Rights as Shareholder. If any of the Shares are forfeited in accordance with this Section 3, then after such
time Subscriber (or its successor in interest), shall no longer have any rights as a holder of such forfeited Shares, and the Company shall take such action as is appropriate to cancel such forfeited Shares. 

3.3. Share Certificates. In the event an adjustment to the Original Certificates, if any, is required pursuant to this Section 3,
then Subscriber shall return such Original Certificates to the Company or its designated agent as soon as practicable upon its receipt of notice from the Company advising Subscriber of such adjustment, following which a new certificate (the
“New Certificate”), if any, shall be issued in such amount representing the adjusted number of Shares held by Subscriber. The New Certificate, if any, shall be returned to Subscriber as soon as practicable. Any such
adjustment for any uncertificated securities held by Subscriber shall be made in book-entry form. 
 4. Waiver of Redemption Rights. Subscriber hereby
waives any and all rights to redeem the Shares for a portion of the amounts held in the trust account into which substantially all of the proceeds of the IPO will be deposited (the “Trust Account”) in the event of
(i) the Company’s failure to timely complete an initial business combination, (ii) an extension of the time period to complete an initial business combination or (iii) upon the consummation of an initial business combination. For
purposes of clarity, in the event Subscriber purchases Class A ordinary shares included in the Units issued in the IPO (“Public Shares”), either in the IPO or in the aftermarket, any Public Shares so purchased shall be
eligible to be redeemed for a portion of the amounts held in the Trust Account in the event of the Company’s failure to timely complete an initial business combination (but, for the avoidance of doubt, not in connection with an extension of the
time period to complete an initial business combination or upon the consummation of an initial business combination). 
 5. Restrictions on Transfer.

 5.1. Securities Law Restrictions. In addition to any restrictions to be contained in that certain letter agreement (commonly known
as an “Insider Letter”) to be dated as of the closing of the IPO by and between Subscriber and the Company (which will also contain other agreements with respect to the Shares), Subscriber agrees not to sell, transfer,
pledge, hypothecate, mortgage, charge or otherwise dispose of all or any part of the Shares unless, prior thereto, (a) a registration statement on the appropriate form under the Securities Act and applicable state securities laws with respect
to the Shares proposed to be transferred shall then be effective or (b) the Company has received an opinion from counsel, reasonably satisfactory to the Company, that registration is not required because such transaction is exempt from
registration under the Securities Act and the rules promulgated by the Securities and Exchange Commission thereunder and all applicable state securities laws. 

  
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 5.2. Restrictive Legends. Any certificates representing the Shares shall have
endorsed thereon legends substantially as follows (and any book-entries representing the Shares shall have similar notations): 
 “THE
SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED, OR ANY U.S. STATE SECURITIES LAWS AND NEITHER THE SECURITIES NOR ANY INTEREST THEREIN MAY BE OFFERED, SOLD, TRANSFERRED, PLEDGED, HYPOTHECATED
OR OTHERWISE DISPOSED OF EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER SUCH ACT OR SUCH LAWS OR AN EXEMPTION FROM REGISTRATION UNDER SUCH ACT AND SUCH LAWS WHICH, IN THE OPINION OF COUNSEL, IS AVAILABLE.” 

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO ADDITIONAL RESTRICTIONS ON TRANSFER SET FORTH IN A LETTER AGREEMENT WITH
THE COMPANY (A COPY OF WHICH MAY BE OBTAINED FROM THE COMPANY AT THE COMPANY’S PRINCIPAL PLACE OF BUSINESS WITHOUT CHARGE) AND MAY NOT BE OFFERED, SOLD, TRANSFERRED, PLEDGED, HYPOTHECATED OR OTHERWISE DISPOSED OF IN VIOLATION OF SUCH
RESTRICTIONS.” 
 5.3. Additional Shares or Substituted Securities. In the event of the declaration of a share dividend, the
declaration of an extraordinary dividend payable in a form other than Shares, a spin-off, a share split, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the
Company’s issued Shares without receipt of consideration, any new, substituted or additional securities or other property which are by reason of such transaction distributed with respect to any Shares subject to this Section 5 or into
which such Shares thereby become convertible shall immediately be subject to this Section 5 and Section 3 hereof. Appropriate adjustments to reflect the distribution of such securities or property shall be made to the number and/or class
of Shares subject to this Section 5 and Section 3. 
 6. Other Agreements. 

6.1. Further Assurances. Subscriber agrees to execute such further instruments and to take such further action as may reasonably be
necessary to carry out the intent of this Agreement. 
 6.2. Notices. All notices, statements or other documents which are required or
contemplated by this Agreement shall be in writing and delivered (a) personally or by certified mail (return receipt requested) or overnight courier service or (b) by electronic mail, if to the Company, at any electronic mail address as
may be designated in writing by the Company and, if to Subscriber, at any electronic mail address as may be designated in writing by Subscriber, or to such other electronic mail addresses as may be designated in writing by the Company or Subscriber.
All such notices, statements or other documents shall be deemed received on the date of receipt by the recipient thereof if received prior to 8:00 p.m. on a business day in the place of receipt. Otherwise, any such notices, statements or other
documents shall be deemed to have been received on the next succeeding business day in the place of receipt. 
 6.3. Entire Agreement.
This Agreement, together with the Insider Letter and the registration rights agreement to be entered into with respect to the Shares, each substantially in the form to be filed as an exhibit to the Registration Statement on Form S-1 associated with the Company’s IPO, embodies the entire agreement and understanding between Subscriber and the Company with respect to the subject matter hereof and supersedes all prior oral or written
agreements and understandings relating to the subject matter hereof. No statement, representation, warranty, covenant or agreement of any kind not expressly set forth in this Agreement shall affect, or be used to interpret, change or restrict, the
express terms and provisions of this Agreement. 

  
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 6.4. Modifications and Amendments. The terms and provisions of this Agreement may be
modified or amended only by written agreement executed by all parties hereto. 
 6.5. Waivers and Consents. The terms and provisions
of this Agreement may be waived, or consent for the departure therefrom granted, only by a written document executed by the party entitled to the benefits of such terms or provisions. No such written waiver or consent shall be deemed to be or shall
constitute a waiver or consent with respect to any other terms or provisions of this Agreement, whether or not similar. Each such written waiver or consent shall be effective only in the specific instance and for the purpose for which it was given,
and shall not constitute a continuing waiver or consent. 
 6.6. Assignment. The rights and obligations under this Agreement may not
be assigned by either party hereto without the prior written consent of the other party. 
 6.7. Benefit. All statements,
representations, warranties, covenants and agreements in this Agreement shall be binding on the parties hereto and shall inure to the benefit of the respective successors and permitted assigns of each party hereto. Nothing in this Agreement shall be
construed to create any rights or obligations except among the parties hereto, and no person or entity shall be regarded as a third-party beneficiary of this Agreement. 

6.8. Governing Law. This Agreement and the rights and obligations of the parties hereunder shall be construed in accordance with and
governed by the laws of the New York applicable to contracts wholly performed within the borders of such state, without giving effect to the conflict of law principles thereof. 

6.9. Severability. In the event that any court of competent jurisdiction shall determine that any provision, or any portion thereof,
contained in this Agreement shall be unreasonable or unenforceable in any respect, then such provision shall be deemed limited to the extent that such court deems it reasonable and enforceable, and, as so limited, shall remain in full force and
effect. In the event that such court shall deem any such provision, or portion thereof, wholly unenforceable, the remaining provisions of this Agreement shall nevertheless remain in full force and effect. 

6.10. Survival of Representations and Warranties. All representations and warranties made by the parties hereto in this Agreement or in
any other agreement, certificate or instrument provided for or contemplated hereby, shall survive the execution and delivery hereof and any investigations made by or on behalf of the parties. 

6.11. No Broker or Finder. Each party agrees to indemnify and hold harmless the other party from and against any claim or demand for
commission or other compensation made against such other party by any broker, finder, financial consultant or similar agent claiming to have been employed by or on behalf of such party and to bear the cost of legal expenses incurred in defending
against any such claim. 
 6.12. Counterparts. This Agreement may be executed in one or more counterparts, each of which when so
executed and delivered shall be deemed to be an original and all of which together shall be deemed to be one and the same agreement. In the event that any signature is delivered in pdf format via electronic mail, such signature shall create a valid
and binding obligation of the party executing (or on whose behalf such signature is executed) with the same force and effect as if such signature page were an original thereof. 

  
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 7. Mutual Drafting; Headings and Captions; Construction. The parties hereto have participated jointly
in the negotiation and drafting of this Agreement. If an ambiguity or question of intent or interpretation arises, this Agreement will be construed as if drafted jointly by the parties hereto and no presumption or burden of proof will arise favoring
or disfavoring any party hereto because of the authorship of any provision of this Agreement. The headings and captions of the various subdivisions of this Agreement are for convenience of reference only and shall in no way modify or affect the
meaning or construction of any of the terms or provisions hereof. The words “include,” “includes,” and “including” will be deemed to be followed by “without limitation.” Pronouns in
masculine, feminine, and neuter genders will be construed to include any other gender, and words in the singular form will be construed to include the plural and vice versa, unless the context otherwise requires. The words “this
Agreement,” “herein,” “hereof,” “hereby,” “hereunder,” and words of similar import refer to this Agreement as a whole and not to any particular subdivision unless expressly
so limited. The parties hereto intend that each representation, warranty, and covenant contained herein will have independent significance. If any party hereto has breached any representation, warranty, or covenant contained herein in any respect,
the fact that there exists another representation, warranty or covenant relating to the same subject matter (regardless of the relative levels of specificity) which such party hereto has not breached will not detract from or mitigate the fact that
such party hereto is in breach of the first representation, warranty, or covenant. 
 [Signature Page Follows] 

 

  
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 If the foregoing accurately sets forth our understanding and agreement, please sign the
enclosed copy of this Agreement and return it to us. 
  

			
	Very truly yours,
	DENHAM SUSTAINABLE PERFORMANCE ACQUISITION CORP.
		
	By:	 	 /s/ Paul M. Winters

		 	Name: Paul M. Winters
		 	Title:   Sole Director

  

			
	Accepted and agreed as of the date first written above.
	DENHAM SPAC SPONSOR LLC
		
	By:	 	 /s/ Paul M. Winters

		 	 Name: Paul M. Winters
 Title:
  Manager

 Signature Page to Securities Subscription AgreementEX-10.7

 Exhibit 10.7 

[                ], 2021 

Denham Sustainable Performance Acquisition Corp. 
 185 Dartmouth
St., 7th Floor 
 Boston, Massachusetts 02116 
  

	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 Denham Sustainable Performance Acquisition Corp., a Cayman Islands
exempted company (the “Company”), and UBS Securities LLC, as representative (the “Representative”) of the several underwriters (each, an “Underwriter” and collectively, the
“Underwriters”), relating to an underwritten initial public offering (the “Public Offering”), of up to 23,000,000 of the Company’s units (including up to 3,000,000 units that
may be purchased to cover over-allotments, if any) (the “Units”), each comprised of one of the Company’s Class A ordinary shares, par value $0.0001 per share (the “Class A
Ordinary Shares”), and one-third of one redeemable warrant. Each whole warrant (each, a “Warrant”) entitles the holder thereof to purchase one Class A Ordinary Share
at a price of $11.50 per share, subject to adjustment as described in the Prospectus (as defined below). The Units will be sold in the Public Offering pursuant to a registration statement on Form S-1 and
prospectus (the “Prospectus”) filed by the Company with the U.S. Securities and Exchange Commission (the “Commission”) and the Company has applied to have the Units listed on the New York Stock
Exchange. Certain capitalized terms used herein are defined in paragraph 11 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, each of Denham SPAC Sponsor I LLC (the “Sponsor”) and
the undersigned individuals, each of whom is a member of the Company’s board of directors and/or management team (each of the undersigned individuals, an “Insider” and collectively, the
“Insiders”), hereby agrees with the Company as follows: 
  

	 	1.	 The Sponsor and each Insider agrees that if the Company seeks shareholder approval of a proposed Business
Combination, then in connection with such proposed Business Combination, it, he or she shall (i) vote any Ordinary Shares (as defined below) owned by it, him or her in favor of any proposed Business Combination and (ii) not redeem any
Ordinary Shares owned by it, him or her in connection with such shareholder approval. If the Company seeks to consummate a proposed Business Combination by engaging in a tender offer, the Sponsor and each Insider agrees that it, he or she will not
sell or tender any Ordinary Shares owned by it, him or her in connection therewith. 

  

	 	2.	 The Sponsor and each Insider hereby agrees that in the event that the Company fails to consummate a Business
Combination within 24 months from the closing of the Public Offering, or such later period approved by the Company’s shareholders in accordance with the Company’s amended and restated memorandum and articles of association (as it may be
amended from time to time, 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 ten (10) business days thereafter, redeem 100% of the Class A Ordinary Shares sold as part of the Units in the Public Offering (the “Offering Shares”), at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account (as defined below), including interest earned on the funds held in the Trust Account (which interest shall be net
of taxes payable and up to $100,000 of interest to pay dissolution expenses), divided by the number of then outstanding Offering Shares, which redemption will completely extinguish all Public Shareholders’ (as defined below) rights as
shareholders (including the right to receive further liquidating 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
Company’s board of directors, dissolve and liquidate, subject in the case of clauses (ii) and (iii) 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 agrees to not propose any amendment 

	 	
to the Charter (A) to modify the substance or timing of the Company’s obligation to allow redemption in connection with our initial business combination or to redeem 100% of the
Offering Shares if the Company does not complete a Business Combination within the required time period set forth in the Charter or (B) with respect to any other material provisions relating to shareholders’ rights or pre-initial Business Combination activity, unless the Company provides its Public Shareholders with the opportunity to redeem their Offering 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 its taxes, divided by the number of then outstanding Offering Shares. 

 The Sponsor and each Insider acknowledges that it,
he or she 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 result of any liquidation of the Company with respect to the Founder Shares held by it, him or her. The
Sponsor and each Insider hereby further waives, with respect to any Ordinary Shares held by it, him or her, if any, any redemption rights it, he or she may have in connection with (a) 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 (b) a shareholder vote to approve an amendment to the Charter (A) to modify the substance or timing of the
Company’s obligation to allow redemption in connection with our initial business combination or to redeem 100% of the Offering Shares if the Company has not consummated a Business Combination within the time period set forth in the Charter or
(B) with respect to any other material provisions relating to shareholders’ rights or pre-initial Business Combination activity or in the context of a tender offer made by the Company to purchase
Offering Shares (although the Sponsor, the Insiders and their respective affiliates shall be entitled to redemption and liquidation rights with respect to any Offering Shares it or they hold if the Company fails to consummate a Business Combination
within the time period set forth in the Charter). 
  

	 	3.	 During the period commencing on the effective date of the Underwriting Agreement and ending 180 days after such
date, the Sponsor and each Insider shall not, without the prior written consent of the Representative, (i) sell, offer to sell, contract or agree to sell, hypothecate, pledge, grant any option to purchase or otherwise dispose of or agree to
dispose of, directly or indirectly, or establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended (the
“Exchange Act”), and the rules and regulations of the Commission promulgated thereunder, with respect to, any Units, Ordinary Shares (including, but not limited to, Founder Shares), Warrants or any securities convertible
into, or exercisable, or exchangeable for, Ordinary Shares owned by it, him or her, (ii) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any Units,
Ordinary Shares (including, but not limited to, Founder Shares), Warrants or any securities convertible into, or exercisable, or exchangeable for, Ordinary Shares owned by it, him or her, whether any such transaction is to be settled by delivery of
such securities, in cash or otherwise, or (iii) publicly announce any intention to effect any transaction specified in clause (i) or (ii). Each of the Insiders and the Sponsor acknowledges and agrees that, prior to the effective date of
any release or waiver, of the restrictions set forth in this paragraph 3 or paragraph 7 below, the Company shall announce the impending release or waiver by press release through a major news service at least two business days before the effective
date of the release or waiver. Any release or waiver granted shall only be effective two business days after the publication date of such press release. The provisions of this paragraph will not apply to any transfer permitted under paragraph 7(c)
hereof or if the release or waiver is effected solely to permit a transfer not for consideration and the transferee has agreed in writing to be bound by the same terms described in this Letter Agreement to the extent and for the duration that
such terms remain in effect at the time of the transfer. 

  
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	 	4.	 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 or (ii) any prospective target business with which the Company has entered into a written letter of intent, confidentiality or other similar agreement or Business
Combination 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 or
a Target do not reduce the amount of funds in the Trust Account to below the lesser of (i) $10.00 per Offering Share and (ii) the actual amount per Offering Share held in the Trust Account as of the date of the liquidation of the Trust Account,
if less than $10.00 per Offering Share is then held in the Trust Account due to reductions in the value of the trust assets, less taxes payable, (y) shall not apply to any claims by a third party or a Target which 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. 

  

	 	5.	 To the extent that the Underwriters do not exercise their over-allotment option to purchase up to an additional
3,000,000 Units within 45 days from the date of the Prospectus (and as further described in the Prospectus), the Initial Shareholders agree to forfeit, at no cost, a number of Founder Shares, to be split pro rata between them based on the number of
Founder Shares they hold upon the consummation of the Public Offering, equal to 750,000 multiplied by a fraction, (i) the numerator of which is 3,000,000 minus the number of Units purchased by the Underwriters upon the exercise of their
over-allotment option, and (ii) the denominator of which is 3,000,000. The forfeiture will be adjusted to the extent that the over-allotment option is not exercised in full by the Underwriters so that the Founder Shares will represent an
aggregate of 20.0% of the Company’s issued and outstanding Class A Ordinary Shares after the Public Offering (not including Class A Ordinary Shares underlying the Private Placement Warrants (as defined below)). The Initial
Shareholders further agree that to the extent that the size of the Public Offering is increased or decreased, the Company will purchase or sell Units or effect a share repurchase or share capitalization, as applicable, immediately prior to the
consummation of the Public Offering in such amount as to maintain the ownership of the Initial Shareholders prior to the Public Offering at 20.0% of its issued and outstanding Capital Shares upon the consummation of the Public Offering. In
connection with such increase or decrease in the size of the Public Offering, then (A) the references to 3,000,000 in the numerator and denominator of the formula in the first sentence of this paragraph shall be changed to a number equal to 15%
of the number of Public Shares included in the Units issued in the Public Offering and (B) the reference to 750,000 in the formula set forth in the first sentence of this paragraph shall be adjusted to such number of Founder Shares that the
Initial Shareholders would have to surrender to the Company in order for the Initial Shareholders to hold an aggregate of 20.0% of the Company’s issued and outstanding Class A Ordinary Shares after the Public Offering (not including
Class A Ordinary Shares underlying the Warrants or Private Placement Warrants). 

  

	 	6.	 The Sponsor and each Insider hereby agrees and acknowledges that: (i) the Underwriters and the Company
would be irreparably injured in the event of a breach by such Sponsor or an Insider of its, his or her obligations under paragraphs 1, 2, 3, 4, 5, 7(a), and 7(b), as applicable, of this Letter Agreement, (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.	 (a) The Sponsor and each Insider agrees that it, he or she shall not Transfer any Founder Shares (or any
Class A Ordinary Shares issuable upon conversion thereof) until the earlier of (A) one year after the completion of the Company’s initial Business Combination and (B) subsequent to the Business Combination, (x) if the
closing price of the Class A Ordinary Shares equals or exceeds 

  
 3 

	 	
$12.00 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days within any
30-trading day period commencing at least 150 days after the Company’s initial Business Combination or (y) the date on which the Company completes a liquidation, merger, share exchange or other
similar transaction that results in all of the Company’s Public Shareholders having the right to exchange their shares of Class A Ordinary Shares for cash, securities or other property (the “Founder Shares Lock-up Period”). 

 (b) The Sponsor and each Insider agrees that it, he or she
shall not Transfer any Private Placement Warrants (or any Class A Ordinary Shares underlying the Private Placement Warrants), until 30 days after the completion of a Business Combination (the “Private Placement Warrants Lock-up Period”, together with the Founder Shares Lock-up Period, the “Lock-up
Periods”). 
 (c) Notwithstanding the provisions set forth in paragraphs 7(a) and (b), Transfers of the Founder Shares,
Private Placement Warrants and the Class A Ordinary Shares underlying the Private Placement Warrants that are held by the Sponsor, any Insider or any of their permitted transferees (that have complied with this paragraph 7(c)), are permitted
(a) to the Company’s officers or directors, any affiliate or family member of any of the Company’s officers or directors, any members or partners of the Sponsor or any of their affiliates, any affiliates of our Sponsor or to any
employee of any such affiliates; (b) in the case of an individual, as a gift to such person’s immediate family or to a trust, the beneficiary of which is such person or a member of such person’s immediate family, an affiliate or
associate of such person or to a charitable organization;; (c) in the case of an individual, by virtue of laws of descent and distribution upon death of such person; (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 and the Class A Ordinary Shares, as
applicable, were originally purchased; (g) by virtue of the laws of the Cayman Islands or the Sponsor’s limited liability partnership agreement upon dissolution of the Sponsor; (h) in the event of the Company’s liquidation prior
to the consummation of its initial Business Combination; or (i) in the event that, subsequent to the Company’s consummation of an initial Business Combination, the Company completes a liquidation, merger, share exchange or other similar
transaction which results in all of its shareholders having the right to exchange their Class A ordinary shares for cash, securities or other property; provided, however, that in the case of clauses (a) through (f) these permitted
transferees must enter into a written agreement agreeing to be bound by such transfer restrictions and the other restrictions contained in this Letter Agreement. For the avoidance of doubt, paragraphs 7(a) and (b) shall not apply to any issue,
redemption or reallocation (or any other action having a similar effect) of membership interests in the Sponsor. 
  

	 	8.	 The Sponsor and each Insider represents and warrants that it, he or she 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. Each Insider’s biographical information furnished to the Company (including any
such information included in the Prospectus) is true and accurate in all respects and does not omit any material information with respect to the Insider’s background. The Sponsor and each Insider’s questionnaire furnished to the Company is
true and accurate in all respects. The Sponsor and each Insider represents and warrants that: it, he or she 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; it, he or she
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 it, he or
she is not currently a defendant in any such criminal proceeding. 

  

	 	9.	 Except as disclosed in the Prospectus, neither the Sponsor nor any officer, nor any affiliate of the Sponsor or
any officer, nor any director of the Company, shall receive from the Company any finder’s fee, reimbursement, consulting fee, monies in respect of any repayment 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 

  
 4 

	 	
that it is), other than the following, none of which will be made from the proceeds held in the Trust Account prior to the completion of the initial Business Combination: repayment of a loan and
advances up to an aggregate of $300,000 made to the Company by the Sponsor; payment to the Sponsor for certain office space, utilities, secretarial and administrative support services as may be reasonably required by the Company for a total of
$10,000 per month; reimbursement for any reasonable out-of-pocket expenses related to identifying, investigating, negotiating and completing an initial Business
Combination, and repayment of loans, if any, and on such terms as to be determined by the Company from time to time, made by the Sponsor or an affiliate of the Sponsor or any of the Company’s officers or directors to finance transaction costs
in connection with an intended initial Business Combination, provided, that, if the Company does not consummate an initial Business Combination, a portion of the working capital held outside the Trust Account may be used by the Company to repay such
loaned amounts so long as no proceeds from the Trust Account are used for such repayment. Up to $1,500,000 of such loans may be convertible into warrants at a price of $1.50 per warrant at the option of the lender. Such warrants would be identical
to the Private Placement Warrants, including as to exercise price, exercisability and exercise period. 

  

	 	10.	 The Sponsor and each Insider has full right and power, without violating any agreement to which it is bound
(including, without limitation, any non-competition or non-solicitation agreement with any employer or former employer), to enter into this Letter Agreement and, as
applicable, to serve as an officer and/or director on the board of directors of the Company and hereby consents to being named in the Prospectus as an officer and/or director of the Company. 

 

	 	11.	 As used herein, (i) “Business Combination” shall mean a merger, share exchange, asset
acquisition, share purchase, reorganization or similar business combination, involving the Company and one or more businesses; (ii) “Ordinary Shares” shall mean the Class A Ordinary Shares and Class B ordinary
shares, par value $0.0001 per share (the “Class B Ordinary Shares”); (iii) “Founder Shares” shall mean the 5,750,000 Class B Ordinary Shares issued and outstanding
(up to 750,000 of which are subject to complete or partial forfeiture if the over-allotment option is not exercised by the Underwriters); (iv) “Initial Shareholders” shall mean the Sponsor and any Insider that holds Founder
Shares; (v) “Private Placement Warrants” shall mean the 4,666,667 warrants (or 5,066,667 warrants if the over-allotment option is exercised in full) that the Sponsor has agreed to purchase for an aggregate purchase price of
$7,000,000 (or $7,600,000 if the over-allotment option is exercised in full), or $1.50 per warrant, in a private placement that shall occur simultaneously with the consummation of the Public Offering; (vi) “Public
Shareholders” shall mean the holders of securities issued in the Public Offering; (vii) “Trust Account” shall mean the trust fund into which a portion of the net proceeds of the Public Offering and the sale of
the Private Placement Warrants shall be deposited; and (viii) “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 Exchange Act, 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). 

 

	 	12.	 The Company will maintain an insurance policy or policies providing directors’ and officers’
liability insurance, and each Director 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. 

 

	 	13.	 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 all parties hereto. 

  
 5 

	 	14.	 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 and each Insider and their respective successors, heirs and assigns and permitted transferees. 

  

	 	15.	 Nothing in this Letter Agreement shall be construed to confer upon, or give to, any person or corporation other
than the parties hereto any right, remedy or claim under or by reason of this Letter Agreement or of any covenant, condition, stipulation, promise or agreement hereof. All covenants, conditions, stipulations, promises and agreements contained in
this Letter Agreement shall be for the sole and exclusive benefit of the parties hereto and their successors, heirs, personal representatives and assigns and permitted transferees. 

 

	 	16.	 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. 

  

	 	17.	 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. 

 

	 	18.	 This Letter Agreement shall be governed by and construed and enforced in accordance with the laws of the State
of New York. 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.

  

	 	19.	 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. 

 

	 	20.	 This Letter Agreement shall terminate on the earlier of (i) the expiration of the Lock-up Periods or (ii) the liquidation of the Company; provided, however, that this Letter Agreement shall earlier terminate in the event that the Public Offering is not consummated and closed by
December 31, 2021; provided further that paragraph 4 of this Letter Agreement shall survive such liquidation 

  

	 	21.	 The Company, the Sponsor and each Insider hereby acknowledges and agrees that the Underwriters are third party
beneficiaries of this Letter Agreement. 

 [Signature Page Follows] 

  
 6 

  

			
	Sincerely,
	
	DENHAM SPAC SPONSOR I LLC
		
	By:	 	  

		 	Name:
		 	Title:
		
	By:	 	  

		 	Name: Jordan Marye
		
	By:	 	  

		 	Name: James Obulaney
		
	By:	 	  

		 	Name: Stuart Porter
		
	By:	 	  

		 	Name: Saurabh Anand
		
	By:	 	  

		 	Name: Xuan Yong
		
	By:	 	  

		 	Name: Dr. Dane Boysen
		
	By:	 	  

		 	Name: Thomas Lee
		
	By:	 	  

		 	Name: Chris Thiele
		
	By:	 	  

		 	Name: Roberto de Diego Arozamena

  

			
	Acknowledged and Agreed:
	
	DENHAM SUSTAINABLE PERFORMANCE ACQUISITION CORP.
		
	By:	 	  

		 	Name: Jordan Marye
		 	Title: Chief Executive Officer

  
 [Signature Page to
Letter Agreement]

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