Document:

EX-10.2

 Exhibit 10.2 

Execution Version 

February 8, 2021 
 Decarbonization Plus
Acquisition Corporation 
 712 Fifth Avenue, 36th Floor 

New York, NY 10019 
 RE: Founder Warrants

 Reference is made to that certain Business Combination Agreement (the “BCA”), to be dated as of the date hereof,
by and among Decarbonization Plus Acquisition Corporation, a Delaware corporation (“DCRB”), DCRB Merger Sub Inc., a Delaware corporation (“Merger Sub”), and Hyzon Motors Inc., a Delaware corporation
(the “Company”). This letter agreement (this “Letter Agreement”) is being entered into and delivered by Decarbonization Plus Acquisition Sponsor, LLC, a Delaware limited liability company (the
“Sponsor”), and each of the other undersigned entities and individuals on Exhibit A, each of whom acquired warrants (the “Private Placement Warrants”) to purchase shares of Class A common
stock, par value $0.0001 per share, of DCRB (the “DCRB Class A Common Stock”) in a private placement in connection with DCRB’s initial public offering (together with the Sponsor, the
“Holders”), and acknowledged by DCRB, in connection with the transactions contemplated by the BCA (the “Transactions”). Capitalized terms used but not otherwise defined herein shall have the meanings
ascribed to such terms in the BCA. 
 In consideration of the foregoing and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, each of the parties hereby agrees as follows: 
  

	 	1.	 Each of the Holders represents and warrants to the Company that it owns the number of Private Placement
Warrants set forth opposite such Holder’s name in Column I of Exhibit A hereto. 

  

	 	2.	 Each of the Holders agrees that it shall not Transfer the number of Private Placement Warrants (or shares of
DCRB Class A Common Stock issued upon exercise of Private Placement Warrants) set forth opposite such Holder’s name in Column II of Exhibit A hereto until the earlier of (i) one year after the Closing and (ii) subsequent
to the Closing, (x) the date on which the last sale price of the DCRB Class A Common Stock quoted on the NASDAQ Capital Market (or the exchange on which the shares of DCRB Class A Common Stock are then listed) equals or exceeds $11.50
per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any twenty (20) Trading Days within any thirty (30)-Trading Day period, or (y) the date on which DCRB completes a liquidation,
merger, capital stock exchange, reorganization or other similar transaction that results in the holders of DCRB Class A Common Stock having the right to exchange their shares of DCRB Class A Common Stock for cash, securities or other
property. For purposes of this Letter Agreement, “Transfer” shall mean the (a) (i) sale or assignment of, offer to sell, contract or agreement to sell, hypothecate, pledge, grant of any option to purchase or otherwise
dispose of, (ii) agreement to dispose of, directly or indirectly, or (iii) 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 Securities and Exchange
Commission promulgated thereunder with respect to, in each case (i), (ii) and (iii), 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). 

 

	 	3.	 Upon and subject to the Closing, the number of Private Placement Warrants set forth opposite each Holder’s
name in Column III of Exhibit A hereto (the “$12.00 Warrants”) shall become subject to potential forfeiture, and each Holder hereby agrees not to exercise such $12.00 Warrants, unless and until a $12.00 Triggering
Event (as defined below) occurs within the Earnout Period, with such $12.00 Warrants no longer being subject to forfeiture upon the occurrence of a $12.00 Triggering Event pursuant to the terms of this Letter Agreement. Prior to the occurrence of a
$12.00 Triggering Event, each Holder shall not Transfer any of the $12.00 Warrants. Certificates or book entries representing the $12.00 Warrants shall bear a legend referencing that they are subject to transfer restrictions and forfeiture and are
unable to be exercised in certain circumstances pursuant to the provisions of this Letter Agreement, and any warrant agent for the $12.00 Warrants will be given appropriate stop transfer orders (and related no exercise orders) with respect to the
$12.00 Warrants until the occurrence of a $12.00 Triggering Event; provided, however, that upon a $12.00 Triggering Event in accordance with the terms herein, DCRB shall immediately cause the removal of such legend and direct such warrant
agent that such stop transfer and no exercise orders are no longer applicable. In the event no $12.00 Triggering Event occurs during the five (5) year period commencing on the one (1) year anniversary of the Closing (the
“Earnout Period”), the $12.00 Warrants shall immediately be forfeited to DCRB for no consideration and immediately cancelled. For purposes of this Letter Agreement, “$12.00 Triggering Event”
means the occurrence of a date on which the last reported sales price of one share of DCRB Class A Common Stock quoted on the NASDAQ Capital Market (or the exchange on which the shares of DCRB Class A Common Stock are then listed) is
greater than or equal to $12.00 (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any twenty (20) Trading Days within any thirty (30) consecutive Trading Day period within the Earnout
Period; provided, that, if, during the Earnout Period, there is a Change of Control pursuant to which the holders of DCRB Class A Common Stock have the right to receive consideration implying a value of DCRB Class A Common Stock (as
determined in good faith by the DCRB Board) of (i) less than $12.00 (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like), then the $12.00 Warrants shall immediately be forfeited to DCRB for no
consideration and immediately cancelled; or (ii) greater than or equal to $12.00 (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like), then the $12.00 Triggering Event shall be deemed to have
occurred. 

	 	4.	 Upon and subject to the Closing, the number of Private Placement Warrants set forth opposite each Holder’s
name in Column IV of Exhibit A hereto (the “$14.00 Warrants”) shall become subject to potential forfeiture, and each Holder hereby agrees not to exercise such $14.00 Warrants, unless and until a $14.00 Triggering Event
(as defined below) occurs within the Earnout Period, with such $14.00 Warrants no longer being subject to forfeiture upon the occurrence of a $14.00 Triggering Event pursuant to the terms of this Letter Agreement. Prior to the occurrence of a $14.00
Triggering Event, each Holder shall not Transfer any of the $14.00 Warrants. Certificates or book entries representing the $14.00 Warrants shall bear a legend referencing that they are subject to transfer restrictions and forfeiture and are unable
to be exercised in certain circumstances pursuant to the provisions of this Letter Agreement, and any warrant agent for the $14.00 Warrants will be given appropriate stop transfer orders (and related no exercise orders) with respect to the $14.00
Warrants until the occurrence of a $14.00 Triggering Event; provided, however, that upon a $14.00 Triggering Event in accordance with the terms herein, DCRB shall immediately cause the removal of such legend and direct such warrant agent that
such stop transfer and no exercise orders are no longer applicable. In the event no $14.00 Triggering Event occurs during the Earnout Period, the $14.00 Warrants shall immediately be forfeited to DCRB for no consideration and immediately cancelled.
For purposes of this Letter Agreement, “$14.00 Triggering Event” means the occurrence of a date on which the last reported sales price of one share of DCRB Class A Common Stock quoted on the NASDAQ Capital Market
(or the exchange on which the shares of DCRB Class A Common Stock are then listed) is greater than or equal to $14.00 (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any twenty
(20) Trading Days within any thirty (30) consecutive Trading Day period within the Earnout Period; provided, that, if, during the Earnout Period, there is a Change of Control pursuant to which the holders of DCRB Class A Common Stock
have the right to receive consideration implying a value of DCRB Class A Common Stock (as determined in good faith by the DCRB Board) of (i) less than $14.00 (as adjusted for stock splits, stock dividends, reorganizations,
recapitalizations and the like), then the $14.00 Warrants shall immediately be forfeited to DCRB for no consideration and immediately cancelled; or (ii) greater than or equal to $14.00 (as adjusted for stock splits, stock dividends,
reorganizations, recapitalizations and the like), then the $14.00 Triggering Event shall be deemed to have occurred. 

  

	 	5.	 Notwithstanding the provisions set forth in paragraphs 2, 3 and 4, Transfers of the Private Placement Warrants
and shares of DCRB Class A Common Stock issued or issuable upon the exercise or conversion of the Private Placement Warrants that are held by the Holders or any of their permitted transferees (that have complied with this paragraph 5), are
permitted (a) to DCRB’s officers or directors, any affiliates or family members of any of DCRB’s officers or directors, any members of a Holder, or any affiliates of a Holder; (b) in the case of an individual, transfers by gift
to a member of the individual’s immediate family, to a trust, the beneficiary of which is a member of the individual’s immediate family or an affiliate of such person, or to a charitable organization; (c) in the case of an individual,
transfers by 

	 	
virtue of laws of descent and distribution upon death of the individual, or for estate planning purposes; (d) in the case of an individual, transfers pursuant to a qualified domestic
relations order; (e) transfers by virtue of the laws of the jurisdiction of formation of a Holder or a Holder’s governing documents upon dissolution of a Holder; and (f) in the event of DCRB’s liquidation, merger, capital stock
exchange, reorganization or other similar transaction which results in all of DCRB’s stockholders having the right to exchange their shares of DCRB Class A Common Stock for cash, securities or other property subsequent to the Closing;
provided, however, that in the case of clauses (a) through (e), these permitted transferees must enter into a written agreement with DCRB agreeing to be bound by the transfer and other restrictions herein before any such transfer is affected.
Any transfer that is made in violation of this paragraph 5 or the paragraphs 2, 3 and 4 shall be null and void ab initio. 

  

	 	6.	 The number of Private Placement Warrants (including the $12.00 Warrants and the $14.00 Warrants) set forth in
this Letter Agreement shall be equitably adjusted for stock splits, reverse stock splits, stock dividends, reorganizations, recapitalizations, reclassifications, combinations, exchanges of shares or other like changes or transactions with respect to
the DCRB Class A Common Stock occurring on or after the Closing (other than the conversion of the DCRB Founders Stock into DCRB Class A Common Stock at the Closing). 

 

	 	7.	 Each of the Holders has previously entered into that certain letter agreement dated October 19, 2020 in
connection with the initial public offering of DCRB (as amended, the “Prior Letter Agreement”). Each of the Holders acknowledges and agrees that the Prior Letter Agreement shall survive the consummation of the Transactions in
accordance with its terms, and such Holder shall comply with, and fully perform all of such Holder’s obligations, covenants and agreements set forth in the Prior Letter Agreement. 

 

	 	8.	 The terms and provisions of this Letter Agreement may be modified or amended only with the written approval of
(i) the parties hereto and (ii) prior to the Closing, the Company. 

  

	 	9.	 This Letter Agreement, together with the Prior Letter Agreement, constitute the entire agreement and
understanding of the parties hereto in respect of the subject matter hereof and supersede all prior understandings, agreements, or representations by or among the parties hereto, written or oral, relating to the subject matter hereof.

  

	 	10.	 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 hereto, and any purported assignment in violation of this paragraph shall be null and void ab initio. This Letter Agreement shall be binding on the parties hereto and their respective
successors, permitted assigns and transferees. 

	 	11.	 The provisions set forth in Section 9.05 (Waiver), 10.03 (Severability), 10.06 (Governing Law), 10.07
(Waiver of Jury Trial), Sections 10.09 (Counterparts) and 10.10 (Specific Performance) of the BCA, as in effect as of the date hereof, are hereby incorporated by reference into, and shall be deemed to apply to, this Letter Agreement, mutatis
mutandis. 

  

	 	12.	 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, electronic mail or facsimile transmission. 

 

	 	13.	 This Letter Agreement shall terminate, and have no further force and effect, if the BCA is terminated in
accordance with its terms prior to the Closing. 

 Please indicate your agreement to the terms of this Letter Agreement by signing where
indicated below. 
  

			
	Very truly yours,
	
	 DECARBONIZATION PLUS ACQUISITION

SPONSOR, LLC

 
			
		
	By:	 	 /s/ Peter Haskopoulos

	Name: Peter Haskopoulos
	Title:   Authorized Person

 
			
	
	WRG DCRB INVESTORS, LLC
	
	 By: West River Management, LLC,
 its
Managing Member

  

			
	By:	 	 /s/ Trent Dawson

	Name: Trent Dawson
	Title:   Chief Financial Officer
		
	By:	 	 /s/ Jennifer Aaker

	Name: Dr. Jennifer Aaker
		
	By:	 	 /s/ Jane Kearns

	Name: Jane Kearns
		
	By:	 	 /s/ James AC McDemott

	Name: James AC McDermott
		
	By:	 	 /s/ Jeffrey H. Tepper

	Name: Jeffrey H. Tepper
		
	By:	 	 /s/ Michael Warren

	Name: Michael Warren

			
	 Acknowledged and agreed
 as of the
date of this Letter Agreement:

	
	DECARBONIZATION PLUS ACQUISITION CORPORATION

			
		
	By:	 	 /s/ Peter Haskopoulos

			
	Name: Peter Haskopoulos
	 Title:   Chief Financial Officer, Chief

  Accounting Officer and Secretary

	

 Exhibit A 

 

																	
	 Party
	  	Column I –
Total Private
Placement
Warrants	 	  	Column II –
Lock-Up
Warrants	 	  	Column III –
$12.00
Warrants	 	  	Column IV –
$14.00
Warrants	 
	 Decarbonization Plus Acquisition Sponsor, LLC
	  	 	5,283,879	 	  	 	3,962,909	 	  	 	660,485	 	  	 	660,485	 
	 WRG DCRB Investors, LLC
	  	 	726,057	 	  	 	544,543	 	  	 	90,757	 	  	 	90,757	 
	 Jennifer Aaker
	  	 	26,556	 	  	 	19,917	 	  	 	3,320	 	  	 	3,319	 
	 Jane Kearns
	  	 	26,556	 	  	 	19,917	 	  	 	3,320	 	  	 	3,319	 
	 Jim McDermott
	  	 	398,340	 	  	 	298,755	 	  	 	49,793	 	  	 	49,792	 
	 Jeffrey Tepper
	  	 	26,556	 	  	 	19,917	 	  	 	3,319	 	  	 	3,320	 
	 Michael Warren
	  	 	26,556	 	  	 	19,917	 	  	 	3,319	 	  	 	3,320	 
		  	  
	  
	 	  	  
	  
	 	  	  
	  
	 	  	  
	  
	 
	 Total
	  	 	6,514,500	 	  	 	4,885,875	 	  	 	814,313	 	  	 	814,312EX-10.3

 Exhibit 10.3 

Final Form 

SUBSCRIPTION AGREEMENT 

This SUBSCRIPTION AGREEMENT (this “Subscription Agreement”) is entered into this 8th day of February, 2021, by and among
Decarbonization Plus Acquisition Corporation, a Delaware corporation (the “Issuer”), Hyzon Motors Inc., a Delaware corporation (“Hyzon”), and the undersigned (“Subscriber”). 

Background 

Concurrently with the execution and delivery of this Subscription Agreement, the Issuer is entering into the Business Combination Agreement
and Plan of Reorganization, dated as of the date hereof (as may be amended or supplemented, the “Combination Agreement”), among the Issuer, DCRB Merger Sub Inc., a Delaware corporation and a wholly owned subsidiary of the Issuer
(“Merger Sub”), and Hyzon, pursuant to which the Issuer will acquire Hyzon, on the terms and subject to the conditions set forth therein (the “Transaction”). 

In connection with the Transaction, on the terms and subject to the conditions set forth in this Subscription Agreement, Subscriber desires to
subscribe for and purchase from the Issuer the number of shares of the Issuer’s Class A common stock, par value $0.0001 per share (the “Class A Shares”), set forth on the signature page hereto (the
“Acquired Shares”) for a purchase price of $10.00 per share (the “Share Purchase Price”, and the aggregate purchase price set forth on the signature page hereto the “Purchase Price”), and the Issuer
desires to issue and sell to Subscriber the Acquired Shares in consideration of the payment of the Purchase Price by or on behalf of Subscriber to the Issuer at the Closing Date (as defined below). 

In connection with the Transaction, certain other institutional “accredited investors” (as defined in Rule 501(a) under the
Securities Act of 1933, as amended (the “Securities Act,” and each such institutional “accredited investor,” an “Other Subscriber”)), have entered into subscription agreements with the Issuer substantially
similar to this Subscription Agreement, pursuant to which such Other Subscribers have agreed to subscribe for and purchase, and the Issuer has agreed to issue and sell to such Other Subscribers, on the Closing Date, Class A Shares at the Share
Purchase Price (the “Other Subscription Agreements”). 
 Agreements 

In consideration of the foregoing and the mutual representations, warranties and covenants, and subject to the conditions herein contained,
the parties hereto hereby agree as follows: 
 1. Subscription. Subject to the terms and conditions hereof, Subscriber shall subscribe
for and purchase, and the Issuer shall issue and sell to Subscriber, upon the payment of the Purchase Price, the Acquired Shares (such subscription and issuance, the “Subscription”). 

 2. Closing. 

a. Subject to the satisfaction or waiver of the conditions set forth in Sections 2(c) and 2(d) (other than
those conditions that by their nature are to be satisfied at Closing, but without affecting the requirement that such conditions be satisfied or waived at Closing), the closing of the Subscription contemplated hereby (the “Closing”)
shall occur substantially concurrently with, and is contingent on, the closing of the Transaction (the “Closing Date”). Not less than five (5) business days prior to the anticipated Closing Date, the Issuer shall provide
written notice to Subscriber (the “Closing Notice”) of the anticipated Closing Date. 
 b. By 10:00 am on the Closing Date
(unless otherwise provided below), subject to the satisfaction or waiver of the conditions set forth in Sections 2(c) and 2(d) (other than those conditions that by their nature are to be satisfied at Closing, but without affecting the
requirement that such conditions be satisfied or waived at Closing): 
 (i) Subscriber shall deliver to the Issuer the Purchase Price for
the Acquired Shares by wire transfer of U.S. dollars in immediately available funds to the account specified by the Issuer in the Closing Notice; and 

(ii) The Issuer shall deliver to Subscriber the Acquired Shares in book-entry form, free and clear of
any liens or other restrictions whatsoever (other than those arising under state or federal securities laws), in the name of Subscriber (or its nominee in accordance with its delivery instructions) or to a custodian designated by Subscriber, as
applicable. Each book entry for the Acquired Shares shall contain a notation in the following form: 
 THE SECURITIES REPRESENTED HEREBY HAVE
NOT BEEN REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE OR OTHER JURISDICTION, AND MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN EXEMPTION THEREFROM. 

c. The Issuer’s obligation to effect the Closing shall be subject to the satisfaction on the Closing Date, or, to the extent permitted by
applicable law, the waiver by the Issuer, of each of the following conditions: 
 (i) all representations and warranties of Subscriber
contained in this Subscription Agreement shall be true and correct in all material respects (other than representations and warranties that are qualified as to materiality or Subscriber Material Adverse Effect (as defined below), which
representations and warranties shall be true and correct in all respects) at and as of the Closing Date (except for representations and warranties made as of a specific date, which shall be true and correct in all material respects (other than
representations and warranties that are qualified as to materiality or Subscriber Material Adverse Effect, which representations and warranties shall be true in all respects) as of such date) and the closing of the Transaction shall be scheduled to
occur concurrently with or immediately following the Closing; 

  
 2 

 (ii) Subscriber shall have performed, satisfied and complied in all material respects with
all covenants, agreements and conditions required by this Subscription Agreement to be performed, satisfied or complied with by it at or prior to the Closing; 

(iii) no governmental authority shall have enacted, issued, promulgated, enforced or entered any judgment, order, law, rule or regulation
(whether temporary, preliminary or permanent), which is then in effect and has the effect of making consummation of the Subscription illegal or otherwise preventing or prohibiting consummation of the Subscription (except in the case of a
governmental authority located outside the United States where such judgment, order, law, rule or regulation would not be reasonably expected to have a Company Material Adverse Effect (as defined in the Combination Agreement)); and 

(iv) all conditions precedent to the Issuer’s obligation to effect the Transaction set forth in the Combination Agreement shall have
been satisfied or waived (other than those conditions that (x) may only be satisfied at the closing of the Transaction, but subject to the satisfaction or waiver of such conditions as of the closing of the Transaction or (y) will be
satisfied by the Closing and the closing of the transactions contemplated by the Other Subscription Agreements). 
 d. Subscriber’s
obligation to effect the Closing shall be subject to the satisfaction on the Closing Date, or, to the extent permitted by applicable law, the written waiver by Subscriber, of each of the following conditions: 

(i) all representations and warranties of the Issuer contained in this Subscription Agreement shall be true and correct in all material
respects (other than representations and warranties that are qualified as to materiality or Material Adverse Effect (as defined below), which representations and warranties shall be true and correct in all respects) at and as of the Closing Date
(except for representations and warranties made as of a specific date, which shall be true and correct in all material respects (other than representations and warranties that are qualified as to materiality or Material Adverse Effect, which
representations and warranties shall be true in all respects) as of such date) and the closing of the Transaction shall be scheduled to occur concurrently with or immediately following the Closing; 

(ii) the Issuer shall have performed, satisfied and complied in all material respects with all covenants, agreements and conditions required
by this Subscription Agreement to be performed, satisfied or complied with by it at or prior to the Closing, except where the failure of such performance, satisfaction or non-compliance would not or would not
reasonably be expected to prevent, materially delay or materially impair the ability of the Issuer to consummate the Closing; 
 (iii) no
governmental authority shall have enacted, issued, promulgated, enforced or entered any judgment, order, law, rule or regulation (whether temporary, preliminary or permanent) which is then in effect and has the effect of making consummation of the
Subscription illegal or otherwise preventing or prohibiting consummation of the Subscription and no governmental authority shall have instituted or threatened in writing a proceeding seeking to impose any such restraint or prohibition; 

  
 3 

 (iv) without Subscriber’s prior written consent, there shall not have been any waiver,
amendment or modification to the Combination Agreement (as the same exists on the date of this Subscription Agreement) that would materially adversely affect the economic benefits that Subscriber would reasonably expect to receive under this
Subscription Agreement; 
 (v) all conditions precedent to the closing of the Transaction set forth in the Combination Agreement shall have
been satisfied or waived (other than those conditions that (x) may only be satisfied at the closing of the Transaction, but subject to the satisfaction or waiver of such conditions as of the closing of the Transaction or (y) will be
satisfied by the Closing and the closing of the transactions contemplated by the Other Subscription Agreements); and 
 (vi) no suspension
of the qualification of the Acquired Shares for offering or sale or trading on Nasdaq, or initiation or threatening of any proceedings for any of such purposes, shall have occurred. 

e. At the Closing, the parties hereto shall execute and deliver such additional documents and take such additional actions as the parties
reasonably may deem to be practical and necessary to consummate the Subscription. 
 f. In the event the closing of the Transaction does not
occur within two (2) business days of the anticipated Closing Date identified in the Closing Notice, the Issuer shall promptly (but not later than one (1) business day thereafter) return the Purchase Price to Subscriber, and any book
entries shall be deemed cancelled. For purposes of this Subscription Agreement, “business day” shall mean any day other than (x) a Saturday or Sunday or (y) a day on which the banking institutions located in New York, New York
are permitted or required by law, executive order or governmental decree to remain closed. 
 g. Prior to or at the Closing, Subscriber
shall deliver to the Issuer a duly completed and executed Internal Revenue Service Form W-9 or appropriate Form W-8. 

3. Issuer Representations and Warranties. The Issuer represents and warrants that: 

a. The Issuer has been duly incorporated and is validly existing as a corporation in good standing under the laws of the State of Delaware,
with corporate power and authority to own, lease and operate its properties and conduct its business as presently conducted and to enter into, deliver and perform its obligations under this Subscription Agreement. 

b. The Acquired Shares have been duly authorized and, when issued and delivered to Subscriber against full payment for the Acquired Shares in
accordance with the terms of this Subscription Agreement, the Acquired Shares will be validly issued, fully paid and non-assessable and will not have been issued in violation of or subject to any preemptive or
similar rights created under the Issuer’s certificate of incorporation and bylaws or under the laws of the State of Delaware. 
 c.
This Subscription Agreement, the Other Subscription Agreements and the Combination Agreement (collectively, the “Transaction Documents”) have been duly authorized, executed and delivered by the Issuer. The Transaction Documents
constitute the valid and legally binding obligation of the Issuer, enforceable against the Issuer in accordance with their terms, except as may be limited or otherwise affected by (i) bankruptcy, insolvency, fraudulent conveyance,
reorganization, moratorium or other laws relating to or affecting the rights of creditors generally and (ii) principles of equity, whether considered at law or equity. 

  
 4 

 d. The execution and delivery by the Issuer of the Transaction Documents, and the
performance by the Issuer of its obligations under the Transaction Documents, including the issuance and sale of the Acquired Shares and the consummation of the other transactions contemplated herein and therein, do not and will not conflict with or
result in a breach or violation of any of the terms or provisions of, or constitute a default under, or result in the creation or imposition of any lien, charge or encumbrance upon any of the property or assets of the Issuer pursuant to the terms of
(i) any indenture, mortgage, deed of trust, loan agreement, lease, license or other agreement or instrument to which the Issuer is a party or by which the Issuer is bound or to which any of the property or assets of the Issuer is subject, which
would reasonably be expected to have, individually or in the aggregate, a material adverse effect on the business, properties, prospects, financial condition, stockholders’ equity or results of operations of the Issuer (a “Material
Adverse Effect”) or materially affect the validity of the Acquired Shares or the legal authority of the Issuer to comply in all material respects with the terms of this Subscription Agreement; (ii) the organizational documents of the
Issuer; or (iii) any statute or any judgment, order, rule or regulation of any court or governmental agency or body, domestic or foreign, having jurisdiction over the Issuer or any of its properties that would reasonably be expected to have,
individually or in the aggregate, a Material Adverse Effect or materially affect the validity of the Acquired Shares or the legal authority of the Issuer to comply in all material respects with this Subscription Agreement. 

e. There are no securities or instruments issued by or to which the Issuer is a party containing anti-dilution or similar provisions that will
be triggered by the issuance of (i) the Loans (as defined in Section 9(d)) or related warrants, (ii) the Acquired Shares or (iii) the Class A Shares to be issued pursuant to any Other Subscription Agreement, in each case,
that have not been or will not be validly waived on or prior to the Closing Date. 
 f. The Issuer is not in default or violation (and no
event has occurred which, with notice or the lapse of time or both, would constitute a default or violation) of any term, condition or provision of (i) the organizational documents of the Issuer, (ii) any loan or credit agreement,
guarantee, note, bond, mortgage, indenture, lease or other agreement, permit, franchise or license to which the Issuer is now a party or by which the Issuer’s properties or assets are bound or (iii) any statute or any judgment, order, rule
or regulation of any court or governmental agency or body, domestic or foreign, having jurisdiction over the Issuer or any of its properties, except, in the case of clauses (ii) and (iii), for defaults or violations that have not had and would
not reasonably be expected to have, individually or in the aggregate, a Material Adverse Effect. 
 g. The Issuer is not required to obtain
any consent, waiver, authorization or order of, give any notice to, or make any filing or registration with, any court or other federal, state, local or other governmental authority, self-regulatory organization or other person in connection with
the execution, delivery and performance by the Issuer of this Subscription Agreement (including, without limitation, the issuance of the Acquired Shares), other than (i) the filing with the Securities and Exchange Commission (the
“Commission”) of the Registration Statement (as defined below), (ii) filings required by applicable state or federal securities laws, 

  
 5 

 
(iii) the filings required in accordance with Section 9(o), (iv) those required by Nasdaq, including with respect to obtaining stockholder approval, and (v) the
failure of which to obtain would not reasonably be expected to have, individually or in the aggregate, a Material Adverse Effect or have a material adverse effect on the Issuer’s ability to consummate the transactions contemplated hereby,
including the sale and issuance of the Acquired Shares. 
 h. As of the date hereof and as of immediately prior to the Closing: the
authorized capital stock of the Issuer consists of (i) 1,000,000 shares of preferred stock, par value $0.0001 per share (“Preferred Stock”), (ii) 250,000,000 Class A Shares and (iii) 20,000,000 shares of Class B common
stock, par value $0.0001 per share (“Class B Shares” and, together with the Class A Shares, the “Common Stock”). As of the date hereof and as of immediately prior to the Closing (except with
respect to warrants that may be issued as described in Section 9(d)): (A) no shares of Preferred Stock are issued and outstanding, (B) 22,572,502 Class A Shares are issued and outstanding, (C) 5,643,125
Class B Shares are issued and outstanding and (D) 17,800,751 warrants, each entitling the holder thereof to purchase one Class A Share at an exercise price of $11.50, are outstanding. The Issuer has not received any written communication
from a governmental entity alleging that the Issuer is not in compliance with or is in default or violation of any applicable law, except where such non-compliance, default or violation would not, individually
or in the aggregate, reasonably be expected to have a Material Adverse Effect. 
 i. The issued and outstanding Class A Shares are
registered pursuant to Section 12(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and are listed on Nasdaq. There is no suit, action, proceeding or investigation pending or, to the Issuer’s
knowledge, threatened against the Issuer by Nasdaq or the Commission with respect to any intention by such entity to deregister the Class A Shares or prohibit or terminate the listing of the Class A Shares on Nasdaq. The Issuer has taken
no action that is designed to terminate the registration of the Class A Shares under the Exchange Act or the listing of the Class A Shares on Nasdaq. 

j. Assuming the accuracy of Subscriber’s representations and warranties set forth in Section 4, no registration
under the Securities Act is required for the offer and sale of the Acquired Shares by the Issuer to Subscriber in the manner contemplated by this Subscription Agreement. 

k. Neither the Issuer nor any person acting on its behalf has engaged or will engage in any form of general solicitation or general
advertising (within the meaning of Regulation D of the Securities Act) in connection with any offer or sale of the Acquired Shares. 
 l.
Neither the Issuer nor Decarbonization Plus Acquisition Sponsor, LLC, a Delaware limited liability company (the “Sponsor”), has entered into any subscription agreement, side letter or other agreement with any Other Subscriber or any
other investor in connection with such Other Subscriber’s or investor’s direct or indirect investment in the Issuer other than (i) the Other Subscription Agreements, (ii) the letter agreement, dated October 19, 2020, by and
among the Sponsor, the Issuer and the other parties thereto and (iii) the founders warrant letter agreement, to be dated the date hereof, by and among the Sponsor, the Issuer and the other parties thereto. The Other Subscription Agreements have
not been amended in any material respect following the date of this Subscription Agreement and reflect the same Share Purchase Price and terms that are no more favorable to any such Other Subscriber thereunder than the terms of this Subscription
Agreement. 

  
 6 

 m. The Issuer has made available to Subscriber (including via the Commission’s EDGAR
system) a copy of each form, report, statement, schedule, prospectus, proxy, registration statement and other document, if any, filed by the Issuer with the Commission since its initial registration of the Class A Shares (the “SEC
Documents”), which SEC Documents, as of their respective filing dates, complied in all material respects with the applicable requirements of the Exchange Act and the applicable rules and regulations of the Commission promulgated thereunder.
None of the SEC Documents filed under the Exchange Act (except to the extent that information contained in any SEC Document has been superseded by a later timely filed SEC Document) contained, when filed, any untrue statement of a material fact or
omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading, in the case of any SEC Document that is a registration statement, or included, when filed, any untrue statement of a material
fact or omitted to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, in the case of all other SEC Documents; provided, that, with respect to the proxy
statement to be filed by the Issuer with respect to the Transaction or any of its affiliates included in any SEC Document or filed as an exhibit thereto, the representation and warranty in this sentence is made to the Issuer’s knowledge. The
Issuer has timely filed each report, statement, schedule, prospectus and registration statement that the Issuer was required to file with the Commission since its inception. There are no material outstanding or unresolved comments in comment letters
from the Staff of the Commission with respect to any of the SEC Documents. 
 n. There is no (i) proceeding pending, or, to the
Issuer’s knowledge, threatened against the Issuer, or (ii) judgment, decree, injunction, ruling or order of any governmental entity or arbitrator outstanding against the Issuer, except for such matters as have not had and would not
reasonably be expected to have, individually or in the aggregate, a Material Adverse Effect. 
 o. The Issuer has not paid, and is not
obligated to pay, any brokerage, finder’s or other commission or similar fee in connection with its issuance and sale of the Acquired Shares, except for placement fees payable to Goldman Sachs & Co. LLC (“Goldman
Sachs”) and Morgan Stanley & Co. LLC (“Morgan Stanley”), in their capacity as placement agents for the offer and sale of the Acquired Shares (in such capacity, the “Placement Agents”). 

p. None of the Issuer, its subsidiaries or any of their affiliates, nor any person acting on their behalf has, directly or indirectly, made
any offers or sales of any security or solicited any offers to buy any security, under circumstances that would require registration of the issuance of any of the Acquired Shares under the Securities Act, whether through integration with prior
offerings pursuant to Rule 502(a) of the Securities Act or otherwise. 
 4. Subscriber Representations and Warranties. Subscriber
represents and warrants that: 
 a. Subscriber has been duly formed or incorporated and is validly existing in good standing (to the extent
the concept of good standing is applicable in such jurisdiction) under the laws of its jurisdiction of incorporation or formation, with the requisite entity power and authority to enter into, deliver and perform its obligations under this
Subscription Agreement. 

  
 7 

 b. This Subscription Agreement has been duly authorized, executed and delivered by
Subscriber. This Subscription Agreement is enforceable against Subscriber in accordance with its terms, except as may be limited or otherwise affected by (i) bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium or other
laws relating to or affecting the rights of creditors generally and (ii) principles of equity, whether considered at law or equity. 

c. The execution and delivery by Subscriber of this Subscription Agreement, and the performance by Subscriber of its obligations under this
Subscription Agreement, including the purchase of the Acquired Shares and the consummation of the other transactions contemplated herein, will not conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a
default under, or result in the creation or imposition of any lien, charge or encumbrance upon any of the property or assets of Subscriber pursuant to the terms of (i) any indenture, mortgage, deed of trust, loan agreement, lease, license or
other agreement or instrument to which Subscriber is a party or is bound or to which any of the property or assets of Subscriber is subject, which would reasonably be expected to have a material adverse effect on the business, properties, financial
condition, stockholders’ equity or results of operations of Subscriber, taken as a whole (a “Subscriber Material Adverse Effect”), or materially affect the legal authority of Subscriber to comply in all material respects with
the terms of this Subscription Agreement; (ii) the organizational documents of Subscriber; or (iii) any statute or any judgment, order, rule or regulation of any court or governmental agency or body, domestic or foreign, having
jurisdiction over Subscriber or any of Subscriber’s properties that would reasonably be expected to have a Subscriber Material Adverse Effect or materially affect the legal authority of Subscriber to comply in all material respects with this
Subscription Agreement. 
 d. Subscriber (i) is a “qualified institutional buyer” (as defined in Rule 144A under the
Securities Act) or an institutional “accredited investor” (within the meaning of Rule 501(a)(1), (2), (3), (7) or (9) under the Securities Act), in each case, satisfying the applicable requirements set forth on Schedule A,
(ii) is acquiring the Acquired Shares only for its own account, or if Subscriber is subscribing for the Acquired Shares as a fiduciary or agent for investor accounts, each owner of such account is a “qualified institutional buyer” or
an institutional “accredited investor” (each as defined above) and Subscriber has full investment discretion with respect to such accounts, and the full power and authority to make the acknowledgements, representations and agreements
herein on behalf of owners of such accounts and (iii) is not acquiring the Acquired Shares with a view to, or for offer or sale in connection with, any distribution thereof in violation of the Securities Act. Subscriber has completed
Schedule A following the signature page hereto and the information contained therein is accurate and complete. Subscriber is not an entity formed for the specific purpose of acquiring the Acquired Shares and is an “institutional
account” as defined by FINRA Rule 4512(c). Accordingly, Subscriber is aware that this offering of the Acquired Shares meets the exemptions from filing under FINRA Rule 5123(b)(1)(A), (C) or (J). 

  
 8 

 e. Subscriber understands that the Acquired Shares are being offered in a transaction not
involving any public offering within the meaning of the Securities Act and that the Acquired Shares have not been registered under the Securities Act. Subscriber understands that the Acquired Shares may not be resold, transferred, pledged or
otherwise disposed of by Subscriber absent an effective registration statement under the Securities Act, except (i) to the Issuer or a subsidiary thereof, (ii) to non-U.S. persons pursuant to offers
and sales that occur outside the United States within the meaning of Regulation S under the Securities Act, (iii) pursuant to Rule 144 under the Securities Act (“Rule 144”), provided that all of the applicable conditions
thereof have been met, or (iv) pursuant to another applicable exemption from the registration requirements of the Securities Act, and that any certificates or book-entry records representing the Acquired Shares shall contain the legend set
forth in Section 2(b)(ii). Subscriber acknowledges that the Acquired Shares will not be eligible for resale pursuant to Rule 144A. Subscriber understands and agrees that the Acquired Shares will be subject to the foregoing restrictions and, as
a result, Subscriber may not be able to readily resell the Acquired Shares and may be required to bear the financial risk of an investment in the Acquired Shares for an indefinite period of time. Subscriber understands that it has been advised to
consult legal counsel prior to making any offer, resale, pledge or transfer of the Acquired Shares. 
 f. Subscriber understands and agrees
that Subscriber is purchasing the Acquired Shares directly from the Issuer. Subscriber further acknowledges that there have been no representations, warranties, covenants and agreements made to Subscriber by the Issuer or any of its officers or
directors, expressly or by implication, other than those representations, warranties, covenants and agreements included in this Subscription Agreement. 

g. Subscriber’s acquisition and holding of the Acquired Shares will not constitute or result in a
non-exempt prohibited transaction under section 406 of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”), section 4975 of the Code, or any applicable similar law. 

h. In making its decision to subscribe for and purchase the Acquired Shares, Subscriber represents that it has relied solely upon its own
independent investigation, the investor presentation provided to Subscriber and the Issuer’s representations and warranties in this Subscription Agreement. Without limiting the generality of the foregoing, Subscriber has not relied on
any statements or other information provided by the Placement Agents or any of their respective affiliates, or any of their respective officers, directors, employees or representatives, concerning the Issuer or the Acquired Shares or the offer and
sale of the Acquired Shares. Subscriber acknowledges and agrees that Subscriber has received and has had the opportunity to review such information as Subscriber deems necessary to make an investment decision with respect to the Acquired Shares,
including with respect to the Issuer and the Transaction. Subscriber represents and agrees that Subscriber and Subscriber’s professional advisor(s), if any, have had the full opportunity to ask such questions, receive such answers and obtain
such information as Subscriber and such Subscriber’s professional advisor(s), if any, have deemed necessary to make an investment decision with respect to the Acquired Shares. 

i. Subscriber became aware of this offering of the Acquired Shares solely by means of direct contact between Subscriber and the Issuer or the
Placement Agents, and the Acquired Shares were offered to Subscriber solely by direct contact between Subscriber and the Issuer or the Placement Agents. Subscriber acknowledges that the Issuer represents and warrants that the Acquired Shares
(i) were not offered by any form of general solicitation or general advertising and (ii) are not being offered in a manner involving a public offering under, or in a distribution in violation of, the Securities Act, or any state securities
laws. 

  
 9 

 j. Subscriber acknowledges that it is aware that there are substantial risks incident to the
purchase and ownership of the Acquired Shares. Subscriber is able to fend for itself in the transactions contemplated herein, has exercised its independent judgment in evaluating its investment in the Acquired Shares, has such knowledge and
experience in financial and business matters as to be capable of evaluating the merits and risks of an investment in the Acquired Shares, and Subscriber has sought such accounting, legal, economic and tax advice as Subscriber has considered
necessary to make an informed investment decision. Accordingly, Subscriber acknowledges that the offering of the Acquired Shares meets the institutional account exemptions from filing under FINRA Rule 2111(b). 

k. Subscriber acknowledges and agrees that neither the Placement Agents nor any affiliate of any of the Placement Agents (nor any officer,
director, employee or representative of any of the Placement Agent or any affiliate thereof) has provided Subscriber with any information or advice with respect to the Acquired Shares nor is such information or advice necessary or desired.
Subscriber acknowledges that none of the Placement Agents, affiliates of the Placement Agents or their respective officers, directors, employees, representatives or controlling persons (i) has made any representation as to the Issuer or the
quality of the Acquired Shares, (ii) has made an independent investigation with respect to the Issuer or the Acquired Shares or the accuracy, completeness or adequacy of any information supplied to Subscriber by the Issuer, (iii) has acted
as Subscriber’s financial advisor or fiduciary in connection with the issue and purchase of the Acquired Shares or (iv) has provided a disclosure or offering document in connection with the offer and sale of the Acquired Shares. Subscriber
acknowledges that the Placement Agents, affiliates of the Placement Agents and their respective officers, directors, employees and representatives may have acquired non-public information with respect to the
Issuer which Subscriber agrees, subject to applicable law, need not be provided to it. 
 l. Alone, or together with any professional
advisors, Subscriber represents and acknowledges that Subscriber has adequately analyzed and fully considered the risks of an investment in the Acquired Shares and determined that the Acquired Shares are a suitable investment for Subscriber and that
Subscriber is able at this time and in the foreseeable future to bear the economic risk of a total loss of Subscriber’s investment in the Issuer. Subscriber acknowledges specifically that a possibility of total loss exists. 

m. Subscriber understands and agrees that no federal or state agency has passed upon or endorsed the merits of the offering of the Acquired
Shares or made any findings or determination as to the fairness of an investment in the Acquired Shares. 
 n. Subscriber is not (i) a
person or entity named on the List of Specially Designated Nationals and Blocked Persons, the Executive Order 13599 List, the Foreign Sanctions Evaders List, or the Sectoral Sanctions Identification List, each of which is administered by the U.S.
Treasury Department’s Office of Foreign Assets Control (“OFAC”) (collectively “OFAC Lists”), (ii) owned or controlled by, or acting on behalf of, a person, that is named on an OFAC List, (iii) organized,
incorporated, established, located, resident or born in, or a citizen, national, or the government, including any political subdivision, agency, or instrumentality thereof, of, Cuba, Iran, North Korea, Sudan, Syria, the Crimea region of Ukraine, or
any other country or 

  
 10 

 
territory embargoed or subject to substantial trade restrictions by the United States, (iv) a Designated National as defined in the Cuban Assets Control Regulations, 31 C.F.R. Part 515 or
(v) a non-U.S. shell bank or providing banking services indirectly to a non-U.S. shell bank. Subscriber represents that if it is a financial institution subject to
the Bank Secrecy Act (31 U.S.C. section 5311 et seq.), as amended by the USA PATRIOT Act of 2001 (together with its implementing regulations , the “BSA/PATRIOT Act”), that Subscriber maintains policies and procedures reasonably
designed to comply with the BSA/PATRIOT Act. Subscriber also represents that, to the extent required, it maintains policies and procedures reasonably designed to ensure compliance with OFAC-administered sanctions programs, including screening its
investors against the OFAC Lists. Subscriber further represents and warrants that, to the extent required, it maintains policies and procedures reasonably designed to ensure that the funds held by Subscriber and used to purchase the Acquired Shares
were legally derived. 
 o. If Subscriber is or is acting on behalf of (i) an employee benefit plan that is subject to Title I of
ERISA, (ii) a plan, an individual retirement account or other arrangement that is subject to section 4975 of the Code, (iii) an entity whose underlying assets are considered to include “plan assets” of any such plan, account or
arrangement described in clauses (i) and (ii) (each, an “ERISA Plan”), or (iv) an employee benefit plan that is a governmental plan (as defined in section 3(32) of ERISA), a church plan (as defined in section 3(33) of
ERISA), a non-U.S. plan (as described in section 4(b)(4) of ERISA) or other plan that is not subject to the foregoing clauses (i), (ii) or (iii) but may be subject to provisions under any other federal,
state, local, non-U.S. or other laws or regulations that are similar to such provisions of ERISA or the Code (collectively, “Similar Laws,” and together with the ERISA Plans,
“Plans”), Subscriber represents and warrants that (i) neither the Issuer nor its respective affiliates (the “Transaction Parties”) has provided investment advice or has otherwise acted as the Plan’s
fiduciary, with respect to its decision to acquire and hold the Acquired Shares, and none of the Transaction Parties is or shall at any time be the Plan’s fiduciary with respect to any decision to acquire and hold the Acquired Shares, and none
of the Transaction Parties is or shall at any time be the Plan’s fiduciary with respect to any decision in connection with Subscriber’s investment in the Acquired Shares; and (ii) its purchase of the Acquired Shares will not result in
a non-exempt prohibited transaction under section 406 of ERISA or section 4975 of the Code, or any applicable Similar Law. 

p. Subscriber at the Closing will have sufficient funds to pay the Purchase Price pursuant to Section 2(b)(i). 

q. As of the date hereof Subscriber does not have, and during the thirty (30) day period immediately prior to the date hereof such
Subscriber has not entered into, any “put equivalent position” as such term is defined in Rule 16a-1 under the Exchange Act or short sale positions with respect to the securities of the Issuer.
Subscriber agrees that none of (i) any Other Subscriber pursuant to the Other Subscription Agreements entered into in connection with the offer and sale of Class A Shares (including the controlling persons, members, officers, directors,
partners, agents, or employees of any such other subscriber) or (ii) Goldman Sachs, Morgan Stanley, their respective affiliates or any of their or their respective affiliates’ control persons, officers, directors or employees, in each
case, absent their own gross negligence, fraud or wilful misconduct, or (iii) any other party to the Combination Agreement, including any such party’s representatives, affiliates or any of its or their control persons, officers, directors
or employees, that is not a party hereto, shall be liable to the Subscriber pursuant to this Subscription Agreement for any action heretofore or hereafter taken or omitted to be taken by any of them in connection with the purchase of the Acquired
Shares. 

  
 11 

 5. Additional Subscriber Agreement. Subscriber hereby agrees that, from the date of
this Agreement until the Closing Date, neither Subscriber nor any person or entity acting on behalf of Subscriber or pursuant to any understanding with Subscriber will engage in any Short Sales with respect to securities of the Issuer. For purposes
of this Section 5, “Short Sales” shall include, without limitation, all “short sales” as defined in Rule 200 promulgated under Regulation SHO under the Exchange Act, and all types of direct and
indirect stock pledges (other than pledges in the ordinary course of business as part of prime brokerage arrangements), forward sale contracts, options, puts, calls, swaps and similar arrangements (including on a total return basis), and sales and
other transactions through non-U.S. broker dealers or foreign regulated brokers. Notwithstanding the foregoing, (i) nothing herein shall prohibit other entities under common management with Subscriber
that have no knowledge of this Subscription Agreement or of Subscriber’s participation in the Transaction (including Subscriber’s controlled affiliates and/or affiliates) from entering into any Short Sales and (ii) in the case of a
Subscriber that is a multi-managed investment vehicle whereby separate portfolio managers manage separate portions of such Subscriber’s assets and the portfolio managers have no knowledge of the investment decisions made by the portfolio
managers managing other portions of such Subscriber’s assets, the representation set forth above shall only apply with respect to the portion of assets managed by the portfolio manager that made the investment decision to purchase the Acquired
Shares covered by this Subscription Agreement. 
 6. Registration Rights. 

a. The Issuer agrees that, within fifteen (15) days after the consummation of the Transaction (the “Filing Date”), the
Issuer will file with the Commission (at the Issuer’s sole cost and expense) a registration statement (the “Registration Statement”), registering the resale of the Acquired Shares, which Registration Statement may include
(i) Class A Shares issuable upon exercise of outstanding warrants, (ii) Class A Shares and other securities held by the Sponsor, its affiliates and certain directors of the Issuer, and (iii) Class A Shares issued
pursuant to the Combination Agreement, and the Issuer shall use its reasonable best efforts to have the Registration Statement declared effective as soon as practicable after the filing thereof, but no later than the earlier of (i) the 60th
calendar day (or 90th calendar day if the Commission notifies the Issuer that it will “review” the Registration Statement) following the Closing and (ii) the 10th business day after the date the Issuer is initially notified (orally or
in writing) by the Commission that the Registration Statement will not be “reviewed” or will not be subject to further review (such date, the “Effectiveness Date”); provided, however, that the Issuer’s
obligations to include the Acquired Shares in the Registration Statement are contingent upon Subscriber furnishing in writing to the Issuer such information regarding Subscriber, the securities of the Issuer held by Subscriber and the intended
method of disposition of the Acquired Shares as shall be reasonably requested by the Issuer to effect the registration of the Acquired Shares, and Subscriber shall execute such documents in connection with such registration as the Issuer may
reasonably request that are customary of a selling stockholder in similar situations, including providing that the Issuer shall be entitled to postpone and suspend the effectiveness or use of the Registration Statement during any customary blackout
or similar period or as permitted hereunder. Notwithstanding the foregoing, if the Commission prevents the Issuer from including the shares proposed to be 

  
 12 

 
registered under the Registration Statement due to limitations on the use of Rule 415 under the Securities Act for the resale of the Acquired Shares by the applicable stockholders or otherwise,
such Registration Statement shall register for resale such number of Acquired Shares which is equal to the maximum number of Acquired Shares as is permitted by the Commission. In such event, the number of Acquired Shares to be registered for each
selling stockholder named in the Registration Statement shall be reduced pro rata among all such selling stockholders. Upon notification by the Commission that the Registration Statement has been declared effective, within two (2) business days
thereafter, the Issuer shall file the final prospectus under Rule 424 under the Securities Act. The Issuer will provide a draft of the Registration Statement to Subscriber for review at least two (2) business days in advance of filing the
Registration Statement. In no event shall Subscriber be identified as a statutory underwriter in the Registration Statement unless requested by the SEC; provided, that if the SEC requests that Subscriber be identified as a statutory
underwriter in the Registration Statement, Subscriber will have an opportunity to withdraw from the Registration Statement. For purposes of clarification, any failure by the Issuer to file the Registration Statement by the Filing Date or to effect
such Registration Statement by the Effectiveness Date shall not otherwise relieve the Issuer of its obligations to file or effect the Registration Statement as set forth above in this Section 6. 

b. In the case of the registration effected by the Issuer pursuant to this Subscription Agreement, the Issuer shall, upon reasonable request,
inform Subscriber as to the status of such registration. At its expense the Issuer shall: 
 (i) except for such times as the Issuer is
permitted hereunder to suspend the use of the prospectus forming part of a Registration Statement, use its commercially reasonable efforts to keep such registration continuously effective with respect to Subscriber, and to keep the applicable
Registration Statement or any subsequent shelf registration statement free of material misstatements or omissions, until the earlier of the following: (i) Subscriber ceases to hold any Acquired Shares, (ii) the date all Acquired Shares
held by Subscriber may be sold without restriction under Rule 144, including without limitation, any volume and manner of sale restrictions which may be applicable to affiliates under Rule 144 and without the requirement for the Issuer to be in
compliance with the current public information required under Rule 144(c)(1) or Rule 144(i)(2), as applicable, and (iii) two years from the Effectiveness Date of the Registration Statement. 

(ii) advise Subscriber within two (2) business days: 

(1) when a Registration Statement or any amendment thereto has been filed with the Commission and when such Registration Statement or any
post-effective amendment thereto has become effective; 
 (2) of any request by the Commission for amendments or supplements to any
Registration Statement or the prospectus included therein or for additional information;of the issuance by the Commission of any stop order suspending the effectiveness of any Registration Statement or the initiation of any proceedings for such
purpose; 

  
 13 

 (3) of the receipt by the Issuer of any notification with respect to the suspension of the
qualification of the Acquired Shares included therein for sale in any jurisdiction or the initiation or threatening of any proceeding for such purpose; and 

(4) subject to the provisions in this Subscription Agreement, of the occurrence of any event that requires making changes in any Registration
Statement or prospectus so that, as of such date, any Registration Statement does not contain an untrue statement of a material fact or does not omit to state a material fact required to be stated therein or necessary to make the statements therein
not misleading, or any prospectus does not include an untrue statement of a material fact or does not omit to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not
misleading. 
 Notwithstanding anything to the contrary set forth herein, the Issuer shall not, when advising Subscriber of such events,
provide Subscriber with any material, nonpublic information regarding the Issuer other than to the extent required to provide notice to Subscriber of the occurrence of the events listed in (1) through (5) above may be deemed to be material,
nonpublic information; 
 (iii) use its commercially reasonable efforts to obtain the withdrawal of any order suspending the effectiveness
of any Registration Statement as soon as reasonably practicable; 
 (iv) upon the occurrence of any event contemplated above, except for
such times the Issuer is permitted hereunder to suspend, and has suspended, the use of a prospectus forming part of a Registration Statement, the Issuer shall use its commercially reasonable efforts to, as soon as reasonably practicable, prepare a
post-effective amendment to such Registration Statement or a supplement to the related prospectus, or file any other required document so that, as thereafter delivered to purchasers of the Acquired Shares included therein, such prospectus will not
include any untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; 

(v) use its commercially reasonable efforts to cause all Acquired Shares to be listed on each securities exchange or market, if any, on which
the Class A Shares issued by the Issuer have been listed; 
 (vi) use its commercially reasonable efforts to take all other steps
necessary to effect the registration of the Acquired Shares contemplated hereby and to enable Subscriber to sell the Acquired Shares under Rule 144; and 

(vii) subject to receipt from Subscriber by the Issuer and its transfer agent of customary representations and other documentation reasonably
acceptable to the Issuer and the transfer agent in connection therewith, including, if required by the transfer agent, an opinion of the Issuer’s counsel to the effect that the removal of such restrictive legends in such circumstances may be
effected under the Securities Act, Subscriber may request that the Issuer remove any legend from the book entry position evidencing its Acquired Shares following the earliest time such Acquired Shares (A) have been or are about to be sold or
transferred pursuant to an effective 

  
 14 

 
registration statement or (B) have been or are about to be sold pursuant to Rule 144. If restrictive legends are no longer required for such Acquired Shares pursuant to the foregoing, the
Issuer shall, in accordance with the provisions of this section and within two (2) business days of any request thereof from Subscriber accompanied by such customary and reasonably acceptable representations and other documentation referred to
above establishing that restrictive legends are no longer required, deliver to the transfer agent irrevocable instructions that the transfer agent shall make a new, unlegended entry for such book entry Acquired Shares. The Issuer shall be
responsible for the fees of its transfer agent and all DTC fees associated with such issuance. 
 c. Notwithstanding anything to the
contrary in this Subscription Agreement, the Issuer shall be entitled to delay or postpone the effectiveness of the Registration Statement, and from time to time to require Subscriber not to sell under the Registration Statement or to suspend the
effectiveness thereof, if the negotiation or consummation of a transaction by the Issuer or its subsidiaries is pending or an event has occurred, which negotiation, consummation or event the Issuer’s board of directors reasonably believes, upon
the advice of legal counsel, would require additional disclosure by the Issuer in the Registration Statement of material information that the Issuer has a bona fide business purpose for keeping confidential and the
non-disclosure of which in the Registration Statement would be expected, in the reasonable determination of the Issuer’s board of directors, upon the advice of legal counsel, to cause the Registration
Statement to fail to comply with applicable disclosure requirements (each such circumstance, a “Suspension Event”); provided, however, that the Issuer may not delay or suspend the Registration Statement on more than
two occasions, for more than sixty (60) consecutive calendar days, or more than ninety (90) total calendar days, in each case during any twelve-month period. Upon receipt of any written notice from the Issuer of a Suspension Event while
the Registration Statement is effective or if as a result of a Suspension Event the Registration Statement contains any untrue statement of a material fact or omits to state any material fact required to be stated therein or necessary to make the
statements therein not misleading, or any related prospectus includes any untrue statement of a material fact or omits to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made,
not misleading, Subscriber agrees that (i) it will immediately discontinue offers and sales of the Acquired Shares under the Registration Statement until Subscriber receives copies of a supplemental or amended prospectus (which the Issuer
agrees to promptly prepare) that corrects the misstatements or omissions referred to above and receives notice that any post-effective amendment has become effective or unless otherwise notified by the Issuer that it may resume such offers and sales
and (ii) it will maintain the confidentiality of information included in such written notice delivered by the Issuer unless otherwise required by law or subpoena. If so directed by the Issuer, Subscriber will deliver to the Issuer or, in
Subscriber’s sole discretion destroy, all copies of the prospectus covering the Acquired Shares in Subscriber’s possession; provided, however, that this obligation to deliver or destroy shall not apply (A) to the extent
Subscriber is required to retain a copy of such prospectus (x) to comply with applicable legal, regulatory, self-regulatory or professional requirements or (y) in accordance with a bona fide
pre-existing document retention policy or (B) to copies stored electronically on archival servers as a result of automatic data back-up. 

d. Subscriber may deliver written notice (an “Opt-Out Notice”) to the Issuer
requesting that Subscriber not receive notices from the Issuer otherwise required by this Section 6; provided, however, that Subscriber may later revoke any such Opt-Out
Notice in writing. Following receipt of an Opt-Out Notice from Subscriber (unless subsequently revoked), (i) the 

  
 15 

 
Issuer shall not deliver any such notices to Subscriber and Subscriber shall no longer be entitled to the rights associated with any such notice and (ii) each time prior to Subscriber’s
intended use of an effective Registration Statement, Subscriber will notify the Issuer in writing at least two (2) business days in advance of such intended use, and if a notice of a Suspension Event was previously delivered (or would have been
delivered but for the provisions of this Section 6(d)) and the related suspension period remains in effect, the Issuer will so notify Subscriber, within one (1) business day of Subscriber’s notification to the
Issuer, by delivering to Subscriber a copy of such previous notice of Suspension Event, and thereafter will provide Subscriber with the related notice of the conclusion of such Suspension Event immediately upon its availability. 

e. The Issuer shall, notwithstanding any termination of this Subscription Agreement, indemnify, defend and hold harmless Subscriber (to the
extent a seller under the Registration Statement), its directors, officers, agents and employees and each person who controls Subscriber (within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act) to the
fullest extent permitted by applicable law, from and against any and all out-of-pocket losses, claims, damages, liabilities, costs (including reasonable external
attorneys’ fees) and expenses (collectively, “Losses”), as incurred, that arise out of or are based upon (i) any untrue or alleged untrue statement of a material fact contained in the Registration Statement or in any
amendment or supplement thereto, required to be stated therein or necessary to make the statements therein not misleading or (ii) any untrue or alleged untrue statement of a material fact included in any prospectus included in the Registration
Statement or any form of prospectus or in any amendment or supplement thereto or in any preliminary prospectus, or arising out of or relating to any omission or alleged omission to state a material fact necessary to make the statements therein, in
the light of the circumstances under which they were made, not misleading, except only to the extent that such untrue statements, alleged untrue statements, omissions or alleged omissions are based upon information regarding Subscriber furnished in
writing to the Issuer by Subscriber expressly for use therein or Subscriber has omitted a material fact from such information or otherwise violated the Securities Act, Exchange Act or any state securities law or any rule or regulation thereunder;
provided, however, that the indemnification contained in this Section 6 shall not apply to amounts paid in settlement of any Losses if such settlement is effected without the consent of the Issuer (which consent
shall not be unreasonably withheld, conditioned or delayed), nor shall the Issuer be liable for any Losses to the extent they arise out of or are based upon a violation which occurs (A) in reliance upon and in conformity with written
information furnished by Subscriber, (B) in connection with any failure of such person to deliver or cause to be delivered a prospectus made available by the Issuer in a timely manner or (C) in connection with any offers or sales effected
by or on behalf of Subscriber in violation of Section 6(c) hereof. The Issuer shall notify Subscriber reasonably promptly of the institution, threat or assertion of any proceeding arising from or in connection with the
transactions contemplated by this Section 6(e) of which the Issuer receives notice in writing. Such indemnity shall remain in full force and effect regardless of any investigation made by or on behalf of an indemnified
party and shall survive the transfer of the Acquired Shares by Subscriber. 
 f. Subscriber shall, severally and not jointly, indemnify and
hold harmless the Issuer, its directors, officers, agents and employees, and each person who controls the Issuer (within the meaning of Section 15 of the Securities Act and Section 20 of the Exchange Act), to the fullest extent permitted
by applicable law, from and against all Losses, as incurred, that arise out of or are based upon (i) any untrue or alleged untrue statement of a material fact contained in 

  
 16 

 
any Registration Statement or in any amendment or supplement thereto or arising out of or relating to any omission or alleged omission of a material fact required to be stated therein or
necessary to make the statements therein not misleading or (ii) any untrue or alleged untrue statement of a material fact included in any prospectus included in the Registration Statement or any form of prospectus or in any amendment or
supplement thereto or in any preliminary prospectus or arising out of or relating to any omission or alleged omission of a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not
misleading, with respect to (i) and/or (ii), only to the extent that such untrue or alleged untrue statements or omissions or alleged omissions are based upon information regarding Subscriber furnished in writing to the Issuer by Subscriber
expressly for use therein; provided, however, that the indemnification contained in this Section 6(f) shall not apply to amounts paid in settlement of any Losses if such settlement is effected without the consent of
Subscriber (which consent shall not be unreasonably withheld, conditioned or delayed). In no event shall the liability of Subscriber be greater in amount than the dollar amount of the net proceeds received by Subscriber upon the sale of the Acquired
Shares giving rise to such indemnification obligation. Subscriber shall notify the Issuer promptly of the institution, threat or assertion of any proceeding arising from or in connection with the transactions contemplated by this
Section 6(f) of which Subscriber is aware. Such indemnity shall remain in full force and effect regardless of any investigation made by or on behalf of an indemnified party and shall survive the transfer of the Acquired
Shares by Subscriber. 
 7. Termination. This Subscription Agreement shall terminate and be void and of no further force and effect,
and all rights and obligations of the parties hereto shall terminate without any further liability on the part of any party in respect thereof, upon the earliest to occur of (a) such date and time the Combination Agreement is validly terminated
in accordance with its terms, (b) upon the mutual written agreement of each of the parties hereto to terminate this Subscription Agreement, (c) at the election of Subscriber upon a breach of any representation, warranty, covenant or
agreement on the part of the Issuer set forth in this Subscription Agreement, or if any representation or warranty of the Issuer shall have become untrue, in either case, such that the conditions set forth in Section 2(d)
are not capable of being satisfied by the End Date (as defined below) and (d) at the election of Subscriber, on or after the date that is 180 days after the date hereof (the “End Date”) if the Closing has not occurred on or
prior to such date; provided, that nothing herein will relieve any party from liability for any willful breach hereof prior to the time of termination, and each party will be entitled to any remedies at law or in equity to recover reasonable
and documented out-of-pocket losses, liabilities or damages arising from such breach. The Issuer shall promptly notify Subscriber of the termination of the Combination
Agreement promptly after the termination of such agreement. 
 8. Trust Account Waiver. Subscriber acknowledges that the Issuer is a
blank check company with the powers and privileges to effect a merger, asset acquisition, reorganization or similar business combination involving the Issuer and businesses or assets. Subscriber further acknowledges that, as described in the
Issuer’s prospectus relating to its initial public offering dated October 19, 2020 (the “Prospectus”), available at www.sec.gov, substantially all of the Issuer’s assets consist of the cash proceeds of the
Issuer’s initial public offering and private placements of its securities, and substantially all of those proceeds have been deposited in a trust account (the “Trust Account”) for the benefit of the Issuer, its public
stockholders and the underwriters of the Issuer’s initial public offering. The cash in the Trust Account may be disbursed only for the purposes set forth in the Prospectus, except with respect to interest earned on the funds

  
 17 

 
held in the Trust Account that may be released to the Issuer to pay its tax obligations, if any. For and in consideration of the Issuer entering into this Subscription Agreement, the receipt and
sufficiency of which are hereby acknowledged, Subscriber, on behalf of itself and its representatives, hereby irrevocable waives all right, title and interest, or claim of any kind they have or may have in the future arising out of this Subscription
Agreement, in or to any monies held in the Trust Account, and agrees not to seek recourse against the Trust Account as a result of, or arising out of, this Subscription Agreement; provided, however, that nothing in this
Section 8 shall (x) serve to limit or prohibit the Subscriber’s right to pursue a claim against Issuer for legal relief against assets held outside the Trust Account, for specific performance or other equitable
relief, (y) serve to limit or prohibit any claims that the Subscriber may have in the future against Issuer’s assets or funds that are not held in the Trust Account (including any funds that have been released from the Trust Account and
any assets that have been purchased or acquired with any such funds) or (z) be deemed to limit Subscriber’s right, title, interest or claim to the Trust Account by virtue of Subscriber’s record or beneficial ownership of securities of
the Issuer acquired by any means other than pursuant to this Subscription Agreement, including but not limited to any redemption right with respect to such securities of the Issuer. 

9. Miscellaneous. 
 a.
Each party hereto acknowledges that the other party hereto, the Placement Agents and others will rely on the acknowledgments, understandings, agreements, representations and warranties contained in this Subscription Agreement. Prior to the Closing,
each party hereto agrees to promptly notify the each party hereto if any of the acknowledgments, understandings, agreements, representations and warranties made by such party as set forth herein are no longer accurate in all material respects. The
parties acknowledge and agree that the Placement Agents are third-party beneficiaries of the representations and warranties of the parties contained in this Subscription Agreement. 

b. Each of the Issuer and Subscriber is irrevocably authorized to produce this Subscription Agreement or a copy hereof to any interested party
in any administrative or legal proceeding or official inquiry with respect to the matters covered hereby to the extent required by law or by regulatory bodies. 

c. Notwithstanding anything to the contrary in this Subscription Agreement, prior to the Closing, Subscriber may not transfer or assign all or
a portion of its rights under this Subscription Agreement other than to a fund or account managed by the same investment manager as Subscriber, without the prior consent of the Issuer; provided that such transferee or assignee agrees in
writing to be bound by and subject to the terms and conditions of this Subscription Agreement, makes the representations and warranties in Section 4 and completes Schedule A hereto. In the event of such a transfer or
assignment, Subscriber shall update Schedule B to provide the information required therein. 
 d. Subscriber hereby acknowledges and
agrees that the Issuer may incur indebtedness pursuant to loans (the “Loans”) from the Sponsor or an affiliate thereof or certain of the Issuer’s officers and directors to finance the Issuer’s transaction costs in
connection with the Transaction. Subscriber further acknowledges and agrees that up to $1,500,000 of such Loans may be convertible into warrants at a price of $1.00 per warrant at the option of the lender and that any such conversion shall not
constitute a breach or violation of any of the terms or provisions of, or constitute a default under, this Subscription Agreement. 

  
 18 

 e. All the agreements, representations and warranties made by each party hereto in this
Subscription Agreement shall survive the Closing. For the avoidance of doubt, if for any reason the Closing does not occur prior to or substantially concurrently with the consummation of the Transaction, all representations, warranties, covenants
and agreements of the parties hereto shall survive the consummation of the Transaction and remain in full force and effect until or unless this Subscription Agreement is terminated in accordance herewith. 

f. The Issuer may request from Subscriber such additional information as the Issuer may reasonably deem necessary to evaluate the eligibility
of Subscriber to acquire the Acquired Shares, and Subscriber shall promptly provide such information as may be reasonably requested, to the extent readily available and to the extent consistent with its internal policies and procedures;
provided, that the Issuer agrees to keep any such information provided by Subscriber confidential. 
 g. This Subscription Agreement
constitutes the entire agreement, and supersedes all other prior agreements, understandings, representations and warranties, both written and oral, among the parties, with respect to the subject matter hereof. 

h. Except as otherwise provided herein, this Subscription Agreement shall be binding upon, and inure to the benefit of the parties hereto and
their heirs, executors, administrators, successors, legal representatives and permitted assigns, and the agreements, representations, warranties, covenants and acknowledgments contained herein shall be deemed to be made by, and be binding upon, such
heirs, executors, administrators, successors, legal representatives and permitted assigns. 
 i. Each of the Issuer and Subscriber
acknowledges and agrees that (A) this Subscription Agreement is being entered into in order to induce Hyzon to execute and deliver the Combination Agreement and without the representations, warranties, covenants and agreements of the Issuer and
Subscriber hereunder, Hyzon would not enter into the Combination Agreement; and (B) Hyzon may seek to enforce (including by an action for specific performance, injunctive relief or other equitable relief) each of the covenants and agreements of
the Issuer under this Subscription Agreement. 
 j. If any provision of this Subscription Agreement shall be invalid, illegal or
unenforceable, the validity, legality or enforceability of the remaining provisions of this Subscription Agreement shall not in any way be affected or impaired thereby and shall continue in full force and effect. 

k. This Subscription Agreement may be executed in two (2) or more counterparts (including by electronic means), all of which shall be
considered one and the same agreement and shall become effective when signed by each of the parties and delivered to the other parties, it being understood that all parties need not sign the same counterpart. 

  
 19 

 l. Each party shall pay its own expenses in connection with this Subscription Agreement and
the transactions contemplated herein. 
 m. Notices. Any notice or communication required or permitted hereunder shall be in writing
and either delivered personally, emailed or telecopied, sent by overnight mail via a reputable overnight carrier, or sent by certified or registered mail, postage prepaid, and shall be deemed to be given and received (a) when delivered
personally, (b) upon receipt of an appropriate electronic answerback or confirmation when delivered by telecopy (to such number specified below or other numbers as such person may subsequently designate by notice given hereunder), (c) when sent
by email, with no mail undeliverable or other rejection notice or (d) five (5) business days after the date of mailing to the address below or to other addresses as such person may hereafter designate by notice given hereunder: 

(i) if to Subscriber, to such addresses set forth on the signature page hereto; 

(ii) if to the Issuer, to: 

Decarbonization Plus Acquisition Corporation 

2744 Sand Hill Road 
 Menlo Park,
CA 94025 
 Attention: Peter Haskopoulos 

Email: phaskopoulos@riverstonellc.com 

with required copies to (which copies shall not constitute notice): 

Vinson & Elkins L.L.P. 

1001 Fannin St. 
 Suite 2500 

Houston, TX 77002 
 Attention: E.
Ramey Layne; Milam Newby; Dan Komarek 
 Email: rlayne@velaw.com; mnewby@velaw.com; dkomarek@velaw.com 

Hyzon Motors Inc. 
 85 East Street

 Honeoye Falls, NY 14472 

Attention: Craig Knight, George Gu 

Email: craig.knight@hyzonmotors.com, gg@hyzonmotors.com 

Sullivan & Cromwell LLP 

125 Broad Street 
 New York, NY,
10004 
 Attention: Robert Downes, Scott Miller 

Email: downesr@sullcrom.com, millersc@sullcrom.com 

and 

  
 20 

 (iii) if to the Placement Agents, to: 

Goldman Sachs & Co. LLC 

200 West Street 
 New York, New
York 10282 
 Attn: Olympia McNerney 

Email: Olympia.mcnerney@gs.com 

Morgan Stanley & Co. LLC 

1585 Broadway 
 New York, New York
10036 
 Attn: Kyle McDonnell 

Email: Kyle.mcdonnell@ms.com 

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

Ropes & Gray LLP 
 1211
Avenue of the Americas 
 New York, New York 100036-8704 

Attn: Paul Tropp 
 Email:
Paul.Tropp@ropesgray.com 
 n. This Subscription Agreement, and any claim or cause of action hereunder based upon, arising out of or related
to this Subscription Agreement (whether based on law, in equity, in contract, in tort or any other theory) or the negotiation, execution, performance or enforcement of this Subscription Agreement, shall be governed by and construed in accordance
with the laws of the State of New York, without giving effect to the principles of conflicts of law thereof. 
 THE PARTIES HERETO
IRREVOCABLY SUBMIT TO THE EXCLUSIVE JURISDICTION OF THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF NEW YORK, THE SUPREME COURT OF THE STATE OF NEW YORK AND THE FEDERAL COURTS OF THE UNITED STATES OF AMERICA LOCATED IN THE STATE OF NEW
YORK SOLELY IN RESPECT OF THE INTERPRETATION AND ENFORCEMENT OF THE PROVISIONS OF THIS SUBSCRIPTION AGREEMENT AND THE DOCUMENTS REFERRED TO IN THIS SUBSCRIPTION AGREEMENT AND IN RESPECT OF THE TRANSACTIONS CONTEMPLATED HEREBY, AND HEREBY WAIVE, AND
AGREE NOT TO ASSERT, AS A DEFENSE IN ANY ACTION, SUIT OR PROCEEDING FOR INTERPRETATION OR ENFORCEMENT HEREOF OR ANY SUCH DOCUMENT THAT IS NOT SUBJECT THERETO OR THAT SUCH ACTION, SUIT OR PROCEEDING MAY NOT BE BROUGHT OR IS NOT MAINTAINABLE IN SAID
COURTS OR THAT VENUE THEREOF MAY NOT BE APPROPRIATE OR THAT THIS SUBSCRIPTION AGREEMENT OR ANY SUCH DOCUMENT MAY NOT BE ENFORCED IN OR BY SUCH COURTS, AND THE PARTIES HERETO IRREVOCABLY AGREE THAT ALL CLAIMS WITH RESPECT TO SUCH ACTION, SUIT OR
PROCEEDING SHALL BE HEARD AND DETERMINED BY SUCH A NEW YORK STATE OR FEDERAL COURT. THE PARTIES HEREBY CONSENT TO AND GRANT ANY SUCH COURT JURISDICTION OVER THE PERSON OF SUCH PARTIES AND OVER THE SUBJECT MATTER OF SUCH DISPUTE AND AGREE THAT
MAILING OF PROCESS OR OTHER PAPERS IN CONNECTION WITH SUCH ACTION, SUIT OR PROCEEDING IN THE MANNER PROVIDED IN SECTION 9(m) OR IN SUCH OTHER MANNER AS MAY BE PERMITTED BY LAW SHALL BE VALID AND SUFFICIENT SERVICE THEREOF. 

  
 21 

 EACH PARTY ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY WHICH MAY ARISE UNDER THIS
SUBSCRIPTION AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES, AND THEREFORE EACH SUCH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN
RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS SUBSCRIPTION AGREEMENT OR THE TRANSACTIONS CONTEMPLATED BY THIS SUBSCRIPTION AGREEMENT. EACH PARTY CERTIFIES AND ACKNOWLEDGES THAT (I) NO REPRESENTATIVE, AGENT
OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER; (II) SUCH PARTY UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THE
FOREGOING WAIVER; (III) SUCH PARTY MAKES THE FOREGOING WAIVER VOLUNTARILY; AND (IV) SUCH PARTY HAS BEEN INDUCED TO ENTER INTO THIS SUBSCRIPTION AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVER AND CERTIFICATIONS IN THIS SECTION
9(n). 
 o. The Issuer shall, by 9:00 a.m., New York City time, on the first (1st) business day following the date of this Subscription
Agreement, issue one or more press releases or file with the Commission a Current Report on Form 8-K (collectively, the “Disclosure Document”) disclosing all material terms of the transactions
contemplated hereby, the Transaction and any other material, non-public information that the Issuer has provided to Subscriber at any time prior to the filing of the Disclosure Document. From and after the
issuance of the Disclosure Document, to the Issuer’s knowledge, Subscriber shall not be in possession of any material, nonpublic information received from the Issuer or its officers, directors or employees. Notwithstanding anything in this
Subscription Agreement to the contrary, the Issuer shall not publicly disclose the name of Subscriber or its affiliates, or include the name of Subscriber or its affiliates in any press release or in any filing with the Commission or any regulatory
agency or trading market, without the prior written consent of Subscriber, except (i) as required by the federal securities law in connection with the Registration Statement, (ii) in a press release or marketing materials of the Issuer in
connection with the Transaction to the extent such disclosure is substantially equivalent to the information that has previously been made public without breach of the obligation under this Section 9(o) and (iii) to
the extent such disclosure is required by law, at the request of the Staff of the Commission or regulatory agency or under the regulations of Nasdaq, in which case the Issuer shall provide Subscriber with prior written notice of such disclosure
permitted under this subclause (iii). 
 p. Modifications and Amendments. This Subscription Agreement may not be amended,
modified, supplemented or waived (i) except by an instrument in writing, signed by the party against whom enforcement of such amendment, modification, supplement or waiver is sought and (ii) without the prior written consent of Hyzon (not
to be unreasonably withheld, conditioned or delayed); provided that any rights (but not obligations) of a party under this Subscription Agreement may be waived, in whole or in part, by such party on its own behalf without the prior consent of any
other party. 

  
 22 

 q. Remedies. The parties hereto agree that irreparable damage would occur if any
provision of this Subscription Agreement were not performed in accordance with the terms hereof, and accordingly, that the parties hereto shall be entitled to seek injunctions to prevent breaches of this Subscription Agreement or to enforce
specifically the performance of the terms and provisions of this Subscription Agreement in an appropriate court of competent jurisdiction as set forth in Section 9(n), in addition to any other remedy to which any party is
entitled at law or in equity. 
 [Signature pages follow.] 

  
 23 

 Each of the Issuer, Hyzon and Subscriber has executed or caused this Subscription Agreement
to be executed by its duly authorized representative as of the date first written above. 
  

			
	Decarbonization Plus Acquisition Corporation
		
	By:	 	 
		 	Name:
		 	Title:

 Signature Page to 

Subscription Agreement 

 
			
	Hyzon Motors Inc.
		
	By:	 	 
		 	Name:
		 	Title:

 Signature Page to 

Subscription Agreement 

			
	SUBSCRIBER:
	
	Name of Subscriber:
	
	 
	
	 Signature of
Subscriber:

			
		
	By:	 	 

			
	Name:
	 Title:

	
	 
	Name in which securities are to be registered 
(if different):
	
	Email
Address:                                       
             
	
	Subscriber’s
EIN:                                        
        
	
	 Address:

	
	 
	
	 

			
		
	 Attn:
	 	 

			
		
	 Telephone No.:
	 	 

			
		
	 Facsimile No.:
	 	 

			
	
	Aggregate Number of Acquired Shares subscribed for:                    
	
	 Aggregate Purchase Price: $_________

 You must pay the Purchase Price by wire transfer of United States dollars in immediately available funds to the account
specified by the Issuer in the Closing Notice. 
 Signature Page to 

Subscription Agreement 

 SCHEDULE A 

ELIGIBILITY REPRESENTATIONS OF SUBSCRIBER 

This Schedule must be completed by Subscriber and forms a part of the Subscription Agreement to which it is attached. Capitalized terms used and not
otherwise defined in this Schedule have the meanings given to them in the Subscription Agreement. Subscriber must check the applicable box in either Part A or Part B below and the applicable box in Part C below. 

 

	A.	 QUALIFIED INSTITUTIONAL BUYER STATUS 

(Please check the applicable subparagraphs): 
  

	☐	 Subscriber is a “qualified institutional buyer” (as defined in Rule 144A under the Securities Act (a
“QIB”)). 

  

	☐	 Subscriber is subscribing for the Acquired Shares as a fiduciary or agent for one or more investor accounts,
and each owner of such accounts is a QIB. 

 *** OR *** 
  

	B.	 INSTITUTIONAL ACCREDITED INVESTOR STATUS 

(Please check the applicable subparagraphs): 

Subscriber is an institutional “accredited investor” (within the meaning of Rule 501(a) under the Securities Act) and has checked below the box(es)
for the applicable provision under which Subscriber qualifies as such: 
  

	☐	 Subscriber is an organization described in Section 501(c)(3) of the Internal Revenue Code of 1986, as
amended, a corporation, Massachusetts or similar business trust, partnership, or limited liability company that was not formed for the specific purpose of acquiring the securities of the Issuer being offered in this offering, with total assets in
excess of $5,000,000. 

  

	☐	 Subscriber is a “private business development company” as defined in Section 202(a)(22) of the
Investment Advisers Act of 1940. 

  

	☐	 Subscriber is a “bank” as defined in Section 3(a)(2) of the Securities Act.

  

	☐	 Subscriber is a “savings and loan association” or other institution as defined in
Section 3(a)(5)(A) of the Securities Act, whether acting in its individual or fiduciary capacity. 

  

	☐	 Subscriber is a broker or dealer registered pursuant to Section 15 of the Exchange Act.

  

	☐	 Subscriber is an investment adviser registered pursuant to Section 203 of the Investment Advisers Act of
1940 or registered pursuant to the laws of a state. 

  
 Schedule A-1 

	☐	 Subscriber is an investment adviser relying on the exemption from registering with the Commission under
Section 203(l) or (m) of the Investment Advisers Act of 1940. 

  

	☐	 Subscriber is an “insurance company” as defined in Section 2(a)(13) of the Securities Act.

  

	☐	 Subscriber is an investment company registered under the Investment Company Act of 1940. 

 

	☐	 Subscriber is a “business development company” as defined in Section 2(a)(48) of the Investment
Company Act of 1940. 

  

	☐	 Subscriber is a “Small Business Investment Company” licensed by the U.S. Small Business
Administration under either Section 301(c) or (d) of the Small Business Investment Act of 1958. 

  

	☐	 Subscriber is a “Rural Business Investment Company” as defined in Section 384A of the
Consolidated Farm and Rural Development Act. 

  

	☐	 Subscriber is a plan established and maintained by a state, its political subdivisions, or any agency or
instrumentality of a state or its political subdivisions, for the benefit of its employees, and such plan has total assets in excess of $5,000,000. 

  

	☐	 Subscriber is an employee benefit plan within the meaning of the Employee Retirement Income Security Act of
1974 if the investment decision is made by a plan fiduciary, as defined in Section 3(21) of such act, which is one of the following. 

  

	 	☐	 A bank; 

  

	 	☐	 A savings and loan association; 

 

	 	☐	 A insurance company; or 

 

	 	☐	 A registered investment adviser. 

 

	☐	 Subscriber is an employee benefit plan within the meaning of the Employee Retirement Income Security Act of
1974 with total assets in excess of $5,000,000. 

  

	☐	 Subscriber is an employee benefit plan within the meaning of the Employee Retirement Income Security Act of
1974 that is a self-directed plan with investment decisions made solely by persons that are accredited investors. 

  

	☐	 Subscriber is a trust with total assets in excess of $5,000,000, not formed for the specific purpose of
acquiring the securities offered by the Issuer in this offering, whose purchase is directed by a sophisticated person as described in Rule 506(b)(2)(ii) under the Securities Act. 

*** AND *** 

  
 Schedule A-2 

	C.	 AFFILIATE STATUS 

(Please check the applicable box) 

SUBSCRIBER: 
  

	☐	 is: 

  

	☐	 is not: 

an “affiliate” (as defined in Rule 144 under the Securities Act) of the Issuer or acting on behalf of an affiliate of the Issuer.

  
 Schedule A-3 

 SCHEDULE B 

SCHEDULE OF TRANSFERS 

Subscriber’s Subscription was in the amount of ____________ Class A Shares. The following transfers of a portion of the Subscription
have been made: 
  

							
	 Date of Transfer or
Reduction
	 	 Transferee
	 	 Number of Transferee
Acquired Shares Transferred
or
Reduced
	  	 Subscriber Revised
Subscription Amount

		 		 		  	

 Schedule B as of ______________, 20__, accepted and agreed to as of this ____ day of ____________, 20__ by: 

 

			
	Decarbonization Plus Acquisition Corporation
		
	By:	 	 
		 	Name:
		 	Title:
	
	Name of Subscriber:
	
	 
	
	 Signature of Subscriber:

		
	By:	 	 
		 	Name:
		 	 Title:

  
 Schedule B-1

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00320-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00320-of-00352.parquet"}]]