Document:

EX-10.1

 Exhibit 10.1 

Execution Version 

ECP Environmental Growth Opportunities Corp. 

40 Beechwood Road Summit, 
 New
Jersey 07901 
 January 20, 2022 
 Goldman
Sachs Asset Management 
 200 West Street, 3rd Floor 

New York, NY 10282 
 Attention: Kyri Loupis 

Re: Forward Purchase Agreement – Side Letter 

Reference is made to that certain Forward Purchase Agreement, dated as of January 24, 2021, by and among ECP Environmental Growth
Opportunities Corp., a Delaware corporation (the “Company”), ENNV Holdings, LLC, a Delaware limited liability company (the “Sponsor”), and Goldman Sachs Asset Management, L.P., in its capacity as
investment adviser on behalf of its clients (the “Purchaser” and, together with the Company and the Sponsor, each a “Party” and, collectively, the “Parties”), as amended by that
certain First Amendment to Forward Purchase Agreement, dated as of January 31, 2021, and that certain Letter Agreement, dated as of July 18, 2021 (as so amended, the “Forward Purchase Agreement”). Capitalized terms
used but not defined herein shall have the meanings set forth for such terms in the Forward Purchase Agreement. 
 In accordance with
Section 4(c)(iv) of the Forward Purchase Agreement, the Purchaser has provided irrevocable written consent to the Company confirming its commitment to purchase twenty-five million dollars ($25,000,000) of Forward Purchase Units in connection
with the closing of the FR Business Combination (the “Closing”). 
 This letter (this “Letter
Agreement”) supersedes all prior written or oral and all contemporaneous oral agreements, understandings and negotiations with respect to the subject matter hereof solely with respect to the FR Business Combination, and for the
avoidance of doubt, does not apply to any other Business Combination that the Company may pursue should it not consummate the FR Business Combination. 

1. Terms of Agreement. Notwithstanding anything to the contrary contained in the Forward Purchase Agreement, if the Purchaser acquires
any shares of Class A Common Stock (i) on or after the date of this Agreement but prior to 4:00 p.m. New York City time on January 25, 2022 (the “Cutoff Time”) and does not exercise any right to redeem such
shares in connection with the Company’s redemption of Class A Common Stock in accordance with the Company’s organizational documents in connection with the Closing (the “Redemption”) (and, if necessary to
revoke any prior redemption elections made with respect to such shares, does so effectuate such revocation) or (ii) on or after the Cutoff Time but prior to February 1, 2022 and delivers evidence reasonably satisfactory to the Company that
(a) the stockholder from whom such shares were acquired had, prior to such acquisition, validly elected to redeem such shares in connection with the Redemption and (b) such stockholder or the Purchaser, as applicable, has, prior to
Closing, 

 
validly revoked such election to redeem such shares in connection with the Redemption (such shares of Class A Common Stock described in clauses (i) and (ii), the “Eligible
Shares”), and, in each case, does not Transfer (as defined below) such Eligible Shares prior to the date of the Closing (the “Closing Date”), then such Eligible Shares shall be “Non-Redeemed Shares,” and the number of Forward Purchase Units the Purchaser is obligated to purchase under the Forward Purchase Agreement will be reduced by the number of
Non-Redeemed Shares; provided, that, the Purchaser must deliver to the Company a certificate in the form attached hereto as Exhibit A by 12:00 p.m. New York City time on February 1, 2022,
and shall further, upon the Company’s request, promptly provide such additional documents reasonably requested by the Company relating to the Eligible Shares; and provided, further, that, notwithstanding any such reduction in the number
of Forward Purchase Units that the Purchaser is obligated to purchase under the Forward Purchase Agreement, upon consummation of the sale of such Forward Purchase Units, the Company shall issue to the Purchaser a number of redeemable warrants, each
of which is exercisable to purchase one share of Class A Common Stock at an exercise price of $11.50 per share, which warrants shall have the same terms as the Private Placement Warrants (the “Additional Warrants”), such
that the Purchaser shall receive 625,000 Forward Purchase Warrants and Additional Warrants in the aggregate. “Transfer” means any (i) sale, offer to sell, contract or agreement 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, with respect to any relevant securities, (ii) 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 relevant securities,
or (iii) public announcement of any intention to effect any transaction specified in clause (i) or (ii). 
 2. Material Non-Public Information. Each of the Company and the Sponsor hereby represents and warrants to the Purchaser that it has not provided any information to the Purchaser that could reasonably be expected to
constitute material non-public information with respect to the Company or Fast Radius. 
 3.
References. All references in the Forward Purchase Agreement to the “Agreement” shall be deemed to refer to the Forward Purchase Agreement, as amended and modified by this Letter Agreement. 

4. Entire Agreement. This Letter Agreement, together with the Forward Purchase Agreement and any documents, instruments and writing that
are delivered pursuant hereto or referenced herein, constitute the entire agreement and understanding of the Parties in respect of its subject matter and supersedes all prior understandings, agreements or representations by or among the Parties,
written or oral, to the extent they relate in any way to the subject matter hereof or the transactions contemplated hereby. 
 5. No Other
Amendments. This Letter Agreement shall not constitute an amendment or waiver of any provisions of the Forward Purchase Agreement not expressly referred to herein. Except as expressly amended hereby, the Forward Purchase Agreement is and
shall remain in full force and effect in accordance with the terms thereof. 

  
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 6. Miscellaneous. 

(a) Governing Law. This Letter Agreement and the rights and obligations of the Parties shall be construed in accordance with and
governed by the laws of Delaware applicable to contracts wholly performed within the borders of such state, without giving effect to the conflict of law principles thereof. 

(b) Jurisdiction. The Parties (i) hereby irrevocably and unconditionally submit to the jurisdiction of the state courts of
Delaware for the purpose of any suit, action or other proceeding arising out of or based upon this Letter Agreement, (ii) agree not to commence any suit, action or other proceeding arising out of or based upon this Letter Agreement except in
state courts of Delaware and (iii) hereby waive, and agree not to assert, by way of motion, as a defense, or otherwise, in any such suit, action or proceeding, any claim that it is not subject personally to the jurisdiction of the above-named
courts, that its property is exempt or immune from attachment or execution, that the suit, action or proceeding is brought in an inconvenient forum, that the venue of the suit, action or proceeding is improper or that this Letter Agreement or the
subject matter hereof may not be enforced in or by such court. 
 (c) Severability. In the event that any court of competent
jurisdiction shall determine that any provision, or any portion thereof, contained in this Letter 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 Letter Agreement shall
nevertheless remain in full force and effect. 
 (d) Execution. This Letter Agreement may be executed in one or more counterparts,
all of which when taken together shall be considered one and the same agreement and shall become effective when counterparts have been signed by each Party and delivered to the other Party, it being understood that both Parties need not sign the
same counterpart. In the event that any signature is delivered by facsimile transmission or any other form of electronic delivery, 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. 
 (e) Termination. In the event that
certain Agreement and Plan of Merger, dated as of July 18, 2021, as amended on December 26, 2021, by and among the Company, Fast Radius and ENNV Merger Sub, Inc., a Delaware corporation, is terminated prior to the closing of the FR
Business Combination, this Letter Agreement shall automatically terminate and be of no further force and effect. 
 [Signature pages
follow] 

  
 3 

 IN WITNESS WHEREOF, the undersigned have executed this Letter Agreement to be
effective as of the date first set forth above. 
  

			
	GOLDMAN SACHS ASSET MANAGEMENT, L.P., in its capacity as investment adviser on behalf of its clients, including the Permitted Fund Assignees
		
	By:	 	/s/ Ganesh Jois
		 	 Name: Ganesh Jois

		 	 Title: Managing Director

	
	 Address for Notices: 200 West Street

	
                 New York, NY
10282

	 E-mail: Ganesh.Jois@gs.com

 [Signature Page to Letter Agreement] 

			
	ECP ENVIRONMENTAL GROWTH OPPORTUNITIES CORP.
		
	By:	 	/s/ Tyler Reeder
		 	 Name: Tyler Reeder

		 	 Title: President and Chief Executive Officer

	
	 ENNV HOLDINGS, LLC

		
	By:	 	/s/ Tyler Reeder
		 	 Name: Tyler Reeder

		 	 Title: President and Chief Executive Officer

 [Signature Page to Letter Agreement] 

 EXHIBIT A 

PURCHASER CERTIFICATE 

Reference is made to that certain Forward Purchase Agreement, dated as of January 24, 2021, by and among ECP Environmental Growth
Opportunities Corp., a Delaware corporation (the “Company”), ENNV Holdings, LLC, a Delaware limited liability company (the “Sponsor”), and Goldman Sachs Asset Management, L.P., in its capacity as
investment adviser on behalf of its clients (the “Purchaser” and, together with the Company and the Sponsor, each a “Party” and, collectively, the “Parties”), as amended by that
certain First Amendment to Forward Purchase Agreement, dated as of January 31, 2021, that certain Letter Agreement, dated as of July 18, 2021 and that certain Letter Agreement, dated as of January 20, 2022 (as so amended, the
“Forward Purchase Agreement”). Capitalized terms used but not defined herein shall have the meanings set forth for such terms in the Forward Purchase Agreement. 

Pursuant to Section 1 of that certain Letter Agreement, dated as of January 20, 2022 (the “Letter
Agreement”), the Purchaser hereby certifies as follows: 
 (i) The Purchaser wishes to decrease the number of Forward Purchase
Units that it is obligated to purchase under the Forward Purchase Agreement by ____________ Forward Purchase Units, which amount equals the number of Non-Redeemed Shares that the Purchaser beneficially owns as
of the date hereof. 
 (ii) The Purchaser hereby represents, warrants and agrees that the
Non-Redeemed Shares referenced in clause (i) will qualify as Non-Redeemed Shares as of the Closing Date. In connection therewith, the Purchaser agrees and
acknowledges that in order to qualify as Non-Redeemed Shares, such shares of Class A Common Stock were acquired (i) on or after the date of the Letter Agreement but prior to the Cutoff Time and the
Purchaser did not exercise any right to redeem such shares in connection with the Redemption (and, if necessary to revoke any prior redemption elections made with respect to such shares, has so effectuated such revocation) or (ii) on or after
the Cutoff Time but prior to February 1, 2022 and the Purchaser has delivered evidence reasonably satisfactory to the Company that (a) the stockholder from whom such shares were acquired had, prior to such acquisition, validly elected to
redeem such shares in connection with the Redemption and (b) such stockholder or the Purchaser, as applicable, has validly revoked such election to redeem such shares in connection with the Redemption, and, in the case of clause (i) and
(ii), has not Transferred, and will not Transfer prior to the Closing, such Eligible Shares. 
 [Signature page follows] 

  
 6 

 
			
	GOLDMAN SACHS ASSET MANAGEMENT, L.P.,
	in its capacity as investment adviser on behalf of its clients, including the Permitted Fund Assignees
		
	By:	 	                        
	 Name: Ganesh Jois

	 Title: Managing Director

  
 7EX-10.1

 Exhibit 10.1 

EXECUTION VERSION 
 AMENDMENT NO. 2 TO
AMENDED AND RESTATED MASTER REPURCHASE AGREEMENT 
 AMENDMENT NO. 2 TO AMENDED AND RESTATED MASTER REPURCHASE AGREEMENT, dated as of
January 14, 2022 (this “Amendment”), between CMTG JP FINANCE LLC (“Seller”), a Delaware limited liability company, and JPMORGAN CHASE BANK, NATIONAL ASSOCIATION, a national banking association (the “Buyer”).
Capitalized terms used but not otherwise defined herein shall have the meanings given to them in the Repurchase Agreement (as defined below). 

RECITALS 
 WHEREAS, Seller and
Buyer are parties to that certain Amended and Restated Uncommitted Master Repurchase Agreement, dated as of May 27, 2021 (as amended by Amendment No.1 to Amended and Restated Master Repurchase Agreement and Amendment No. 1 to Amended and
Restated Fee and Pricing Letter, dated as of June 29, 2021, the Term SOFR Conforming Changes Amendment, dated December 31, 2021, as further amended hereby, and as may be further amended, restated, supplemented or otherwise modified and in
effect from time to time, the “Repurchase Agreement”); and 
 WHEREAS, Seller and Buyer have agreed, subject to the terms
and conditions hereof, that the Repurchase Agreement shall be amended as set forth in this Amendment. 
 NOW THEREFORE, in consideration of
the premises and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Seller and Buyer each agree as follows: 

SECTION 1. Amendments to Repurchase Agreement. 

(a) The defined terms “Main Pool Maximum Facility Amount” and “Maximum Facility Amount”, each as set forth
in Article 2 of the Repurchase Agreement, are each hereby amended and restated in their entirety to read as follows: 
 “Main
Pool Maximum Facility Amount” shall mean $1,500,000,000. 
 “Maximum Facility Amount” shall mean the sum of the
Main Pool Maximum Facility Amount and the Sidecar Pool Maximum Facility Amount. 
 SECTION 2. Conditions
Precedent; Effective Date. This Amendment shall become effective on the date upon which all of the following has occurred (the “Amendment Effective Date”): (a) this Amendment is executed and delivered by a duly authorized
officer of Buyer, Seller and Guarantor; and (b) Buyer confirms the receipt of an upsize fee in the amount of $284,246.58; provided that, it is a condition subsequent to the Amendment Effective Date that within fourteen (14) days
following the date hereof, Buyer receives a bankruptcy safe harbor opinion, or a bring-down of the bankruptcy safe harbor opinion previously delivered, in form and substance acceptable to Buyer in its sole discretion. 

SECTION 3. Seller’s Representations and Warranties. On and as of the date first above written, Seller
hereby represents and warrants to Buyer that (a) Seller has taken all necessary action to authorize the execution, delivery and performance of this Amendment and (b) this Amendment has been duly executed and delivered by or on behalf of
Seller and constitutes the legal, valid and binding obligation of Seller enforceable against Seller in accordance with its terms subject to applicable bankruptcy, insolvency, and other limitations on creditors’ rights generally and to equitable
principles. 

 SECTION 4. Acknowledgments of Guarantor. Guarantor
hereby acknowledges the execution and delivery of this Amendment by Seller and agrees that Guarantor continues to be bound by the Guarantee Agreement to the extent of the Obligations (as defined therein), notwithstanding the impact of the changes
set forth herein. 
 SECTION 5. Limited Effect. Except as expressly amended and modified by this Amendment,
the Repurchase Agreement shall continue to be, and shall remain, in full force and effect in accordance with its terms; provided, however, that upon the effective date hereof, all references in the Repurchase Agreement to the
“Transaction Documents” shall be deemed to include, in any event, this Amendment. Each reference to Repurchase Agreement in any of the Transaction Documents shall be deemed to be a reference to the Repurchase Agreement, as amended hereby.

 SECTION 6. Counterparts. This Amendment may be executed in counterparts, each of which when so executed
shall be deemed to be an original and all of which when taken together shall constitute one and the same instrument, and the words “executed,” “signed,” “signature,” and words of like import as used above and elsewhere
in this Amendment or in any other certificate, agreement or document related to this transaction shall include, in addition to manually executed signatures, images of manually executed signatures transmitted by facsimile or other electronic format
(including, without limitation, “pdf”, “tif” or “jpg”) and other electronic signatures (including, without limitation, any electronic sound, symbol, or process, attached to or logically associated with a contract or
other record and executed or adopted by a person with the intent to sign the record). The use of electronic signatures and electronic records (including, without limitation, any contract or other record created, generated, sent, communicated,
received, or stored by electronic means) shall be of the same legal effect, validity and enforceability as a manually executed signature or use of a paper-based record-keeping system to the fullest extent permitted by applicable law, including the
Federal Electronic Signatures in Global and National Commerce Act, the New York State Electronic Signatures and Records Act and any other applicable law, including, without limitation, any state law based on the Uniform Electronic Transactions Act
or the Uniform Commercial Code. 
 SECTION 7. No Novation, Effect of Agreement. Guarantor, Seller and
Buyer have entered into this Amendment solely to amend the terms of the Repurchase Agreement and do not intend this Amendment or the transactions contemplated hereby to be, and this Amendment and the transactions contemplated hereby shall not be
construed to be, a novation of any of the obligations owing by Seller or Guarantor (the “Repurchase Parties”) under or in connection with the Repurchase Agreement or any of the other document executed in connection therewith to which any
Repurchase Party is a party (the “Repurchase Documents”). It is the intention of each of the parties hereto that (i) the perfection and priority of all security interests securing the payment of the obligations of the
Repurchase Parties under the Repurchase Agreement and the other Transaction Documents are preserved, (ii) the liens and security interests granted under the Repurchase Agreement continue in full force and effect, and (iii) any reference to
the Repurchase Agreement in any such Repurchase Document shall be deemed to also reference this Amendment. 

SECTION 8. Consent to Jurisdiction; Waiver of Jury Trial. 

(a) Each party irrevocably and unconditionally (i) submits to the non-exclusive jurisdiction of
any United States Federal or New York State court sitting in Manhattan, and any appellate court from any such court, solely for the purpose of any suit, action or proceeding brought to enforce its obligations under this Amendment or relating in any
way to this Amendment or any Transaction under 

  
 -2- 

 
the Repurchase Agreement and (ii) waives, to the fullest extent it may effectively do so, any defense of an inconvenient forum to the maintenance of such action or proceeding and irrevocably
consent to the service of any summons and complaint and any other process by the mailing of copies of such process to them at their respective address specified in the Repurchase Agreement. The parties hereby agree that a final judgment in any such
action or proceeding shall be conclusive and may be enforced in other jurisdictions by suit on the judgment or in any other manner provided by law. Nothing in this Section 8 shall affect the right of Buyer to serve legal
process in any other manner permitted by law or affect the right of Buyer to bring any action or proceeding against the Seller or its property in the courts of other jurisdictions. 

(b) EACH OF THE PARTIES HEREBY IRREVOCABLY WAIVES ALL RIGHT TO A TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM ARISING OUT OF OR
RELATING TO THIS AMENDMENT, ANY OTHER TRANSACTION DOCUMENT OR ANY INSTRUMENT OR DOCUMENT DELIVERED HEREUNDER OR THEREUNDER. 

SECTION 9. GOVERNING LAW. THIS AMENDMENT AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING UNDER OR RELATED TO
THIS AMENDMENT, THE RELATIONSHIP OF THE PARTIES TO THIS AMENDMENT, AND/OR THE INTERPRETATION AND ENFORCEMENT OF THE RIGHTS AND DUTIES OF THE PARTIES TO THIS AMENDMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS AND
DECISIONS OF THE STATE OF NEW YORK, WITHOUT REGARD TO THE CHOICE OF LAW RULES THEREOF. THE PARTIES HERETO INTEND THAT THE PROVISIONS OF SECTION 5-1401 OF THE NEW YORK GENERAL OBLIGATIONS LAW SHALL APPLY TO
THIS AMENDMENT. 
 [SIGNATURES FOLLOW] 

  
 -3- 

 IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed and
delivered as of the day and year first above written. 
  

			
	BUYER:
	
	JPMORGAN CHASE BANK, NATIONAL ASSOCIATION,
a national banking association organized under the laws of the United States
		
	By:	 	/s/ Thomas Cassino
		 	Name: Thomas Cassino
		 	Title: Managing Director

 JPM-Mack – Signature Page to Amendment No.2 to A&R MRA

 
			
	SELLER:
	
	CMTG JP FINANCE LLC, a Delaware limited liability company
		
	By:	 	/s/ J. Michael McGillis
		 	Name: J. Michael McGillis
		 	Title: Authorized Signatory

  
 JPM-Mack—Signature Page to Amendment No.2 to A&R MRA 

			
	 Acknowledged and Agreed:
  

	CLAROS MORTGAGE TRUST, INC., a Maryland corporation, in its capacity as Guarantor, and solely for purposes of acknowledging and agreeing to the terms of this Amendment:
		
	By:	 	/s/ J. Michael McGillis
		 	Name: J. Michael McGillis
		 	Title: Authorized Signatory

 JPM-Mack—Signature Page to Amendment No.2 to A&R MRA

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