Document:

EX-10.1

 Exhibit 10.1 

THIS PROMISSORY NOTE (THIS “NOTE”) HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”). THIS NOTE
HAS BEEN ACQUIRED FOR INVESTMENT ONLY AND MAY NOT BE SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF REGISTRATION OF THE RESALE THEREOF UNDER THE SECURITIES ACT OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY IN FORM, SCOPE AND SUBSTANCE TO THE
COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED. 
 PROMISSORY NOTE 

 

			
	Principal Amount: Up to $1,500,000	  	Dated as of June 28, 2021

 Decarbonization Plus Acquisition Corporation, a Delaware corporation and blank check company (the
“Maker”), promises to pay to the order of Decarbonization Plus Acquisition Sponsor, LLC, a Delaware limited liability company, or its registered assigns or successors in interest (the “Payee”), or order, the
principal sum of One Million Five Hundred Thousand Dollars ($1,500,000) or such lesser amount as shall have been advanced by Payee to Maker and shall remain unpaid under this Note on the Maturity Date (as defined below) in lawful money of the United
States of America, on the terms and conditions described below. All payments on this promissory note (this “Note”) shall be made by check or wire transfer of immediately available funds to such account as the Payee may from time to
time designate by written notice in accordance with the provisions of this Note, subject to the rights of Payee specified in Section 7 hereof. 

1. Principal. The entire unpaid principal balance of this Note shall be payable on the date (the “Maturity Date”) of
the consummation of the Maker’s initial merger, stock exchange, asset acquisition, stock purchase, recapitalization, reorganization or similar business combination with one or more businesses or entities (a “Business
Combination”). Payee understands that if a Business Combination is not consummated, this Note will not be repaid and all amounts owed hereunder will be forgiven except to the extent that the Maker has funds available to it outside of its
trust account established in connection with its initial public offering of its securities (the “IPO”). The principal balance may be prepaid at any time. Under no circumstances shall any individual, including but not limited to any
officer, director, employee or stockholder of the Maker, be obligated personally for any obligations or liabilities of the Maker hereunder. 

2. Drawdown Requests. Maker and Payee agree that Maker may request, from time to time, up to One Million Five Hundred Thousand Dollars
($1,500,000) in drawdowns under this Note to be used for working capital expenditures, including expenses incurred in connection with a potential Business Combination. Principal of this Note may be drawn down from time to time prior to the Maturity
Date upon written request from Maker to Payee (each, a “Drawdown Request”). Each Drawdown Request must state the amount to be drawn down, and must not be an amount less than Ten Thousand Dollars ($10,000), unless agreed upon in
writing by Maker and Payee. Payee shall fund each Drawdown Request no later than three (3) business days after receipt of a Drawdown Request; provided, however, that the maximum amount of drawdowns outstanding under this Note at any time may
not exceed One Million Five Hundred Thousand Dollars ($1,500,000). No fees, payments or other amounts shall be due to Payee in connection with, or as a result of, any Drawdown Request by Maker. 

  
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 3. Interest. No interest shall accrue on the unpaid principal balance of this Note.

 4. Application of Payments. All payments shall be applied first to payment in full of any costs incurred in the collection of any
sum due under this Note, including (without limitation) reasonable attorney’s fees, then to the payment in full of any late charges and finally to the reduction of the unpaid principal balance of this Note. 

5. Events of Default. The following shall constitute an event of default (“Event of Default”): 

(a) Failure to Make Required Payments. Failure by Maker to pay the principal amount due pursuant to this Note within five
(5) business days of the date specified above. 
 (b) Voluntary Bankruptcy, Etc. The commencement by Maker of a voluntary case
under any applicable bankruptcy, insolvency, reorganization, rehabilitation or other similar law, or the consent by it to the appointment of or taking possession by a receiver, liquidator, assignee, trustee, custodian, sequestrator (or other similar
official) of Maker or for any substantial part of its property, or the making by it of any assignment for the benefit of creditors, or the failure of Maker generally to pay its debts as such debts become due, or the taking of corporate action by
Maker in furtherance of any of the foregoing. 
 (c) Involuntary Bankruptcy, Etc. The entry of a decree or order for relief by a
court having jurisdiction in the premises in respect of Maker in an involuntary case under any applicable bankruptcy, insolvency or other similar law, or appointing a receiver, liquidator, assignee, custodian, trustee, sequestrator (or similar
official) of Maker or for any substantial part of its property, or ordering the winding-up or liquidation of its affairs, and the continuance of any such decree or order unstayed and in effect for a period of
60 consecutive days. 
 6. Remedies. 

(a) Upon the occurrence of an Event of Default specified in Section 5(a) hereof, Payee may, by written notice to Maker, declare this Note
to be due immediately and payable, whereupon the unpaid principal amount of this Note, and all other amounts payable thereunder, shall become immediately due and payable without presentment, demand, protest or other notice of any kind, all of which
are hereby expressly waived, anything contained herein or in the documents evidencing the same to the contrary notwithstanding. 
 (b) Upon
the occurrence of an Event of Default specified in Sections 5(b) or 5(c), the unpaid principal balance of this Note, and all other sums payable with regard to this Note, shall automatically and immediately become due and payable, in all cases
without any action on the part of Payee. 

  
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 7. Conversion. Upon consummation of a Business Combination, the Payee may elect to
convert all or any portion of the unpaid principal balance of this Note into that number of warrants to purchase one share of Class A Common Stock, $0.0001 par value per share, of the Maker (the “Working Capital Warrants”)
equal to the principal amount of the Note so converted divided by $1.00. The Working Capital Warrants shall be identical to the warrants issued by the Maker to the Payee in a private placement in connection with the Maker’s IPO. Upon any
complete or partial conversion of the principal amount of this Note, (i) such principal amount shall be so converted and such converted portion of this Note shall become fully paid and satisfied, (ii) Payee shall surrender and deliver this
Note, duly endorsed, to Maker or such other address which Maker shall designate against delivery of the Working Capital Warrants, (iii) Maker shall promptly deliver a new duly executed Note to Payee in the principal amount that remains
outstanding, if any, after any such conversion and (iv) in exchange for all or any portion of the surrendered Note, Maker shall, at the direction of Payee, deliver to Payee (or its members or their respective affiliates or their designees) the
Working Capital Warrants, which shall bear such legends as are required, in the opinion of counsel to Maker or by any other agreement between Maker and Payee and applicable state and federal securities laws. 

8. Waivers. Maker and all endorsers and guarantors of, and sureties for, this Note waive presentment for payment, demand, notice of
dishonor, protest, and notice of protest with regard to this Note, all errors, defects and imperfections in any proceedings instituted by Payee under the terms of this Note, and all benefits that might accrue to Maker by virtue of any present or
future laws exempting any property, real or personal, or any part of the proceeds arising from any sale of any such property, from attachment, levy or sale under execution, or providing for any stay of execution, exemption from civil process, or
extension of time for payment; and Maker agrees that any real estate that may be levied upon pursuant to a judgment obtained by virtue hereof, on any writ of execution issued hereon, may be sold upon any such writ in whole or in part in any order
desired by Payee. 
 9. Unconditional Liability. Maker hereby waives all notices in connection with the delivery, acceptance,
performance, default, or enforcement of the payment of this Note, and agrees that its liability shall be unconditional, without regard to the liability of any other party, and shall not be affected in any manner by any indulgence, extension of time,
renewal, waiver or modification granted or consented to by Payee, and consents to any and all extensions of time, renewals, waivers, or modifications that may be granted by Payee with respect to the payment or other provisions of this Note, and
agrees that additional makers, endorsers, guarantors, or sureties may become parties hereto without notice to Maker or affecting Maker’s liability hereunder. 

10. Notices. All notices, statements or other documents which are required or contemplated by this agreement shall be: (i) in
writing and delivered personally or sent by first class registered or certified mail, overnight courier service or facsimile or electronic transmission to the address designated in writing, (ii) by facsimile to the number most recently provided
to such party or such other address or fax number as may be designated in writing by such party or (iii) by electronic mail, to the electronic mail address most recently provided to such party or such other electronic mail address as may be
designated in writing by such party. Any notice or other communication so transmitted shall be deemed to have been given on the day of delivery, if delivered personally, on the business day following receipt of written confirmation, if sent by
facsimile or electronic transmission, one (1) business day after delivery to an overnight courier service or five (5) days after mailing if sent by mail. 

  
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 11. Construction. THIS NOTE SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE
LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO CONFLICT OF LAW PROVISIONS THEREOF. 
 12. Severability. Any provision contained in
this Note which is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction. 
 13. Trust
Waiver. Notwithstanding anything herein to the contrary, the Payee hereby waives any and all right, title, interest or claim of any kind (“Claim”) in or to any distribution of or from the trust account (including the deferred
underwriters discounts and commissions) described in greater detail in the registration statement and prospectus filed with the Securities and Exchange Commission in connection with the IPO, and hereby agrees not to seek recourse, reimbursement,
payment or satisfaction for any Claim against the trust account related to this Note. 
 14. Amendment; Waiver. Any amendment hereto
or waiver of any provision hereof may be made with, and only with, the written consent of the Maker and the Payee. 
 15. Assignment.
No assignment or transfer of this Note or any rights or obligations hereunder may be made by any party hereto (by operation of law or otherwise) without the prior written consent of the other party hereto and any attempted assignment without the
required consent shall be void. 
 [Signature page follows] 

  
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 IN WITNESS WHEREOF, Maker, intending to be legally bound hereby, has caused this Note
to be duly executed by the undersigned as of the day and year first above written. 
  

			
	DECARBONIZATION PLUS ACQUISITION CORPORATION
		
	By:	 	/s/ Peter Haskopoulos 
		 	Name: Peter Haskopoulos
		 	Title: Chief Financial Officer, Chief
		 	Accounting Officer and Secretary

 Accepted and agreed this 28th day of June, 2021 

DECARBONIZATION PLUS ACQUISITION SPONSOR, LLC, 
 By:
Decarbonization Plus Acquisition Sponsor Manager, LLC, its Managing Member 
  

			
		
	By:	 	/s/ Peter Haskopoulos 
		 	Name: Peter Haskopoulos
		 	Title: Authorized Person

  
 [Signature Page
to Promissory Note]Document

Exhibit 4.2

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 D E L AW A R E  SEAL DUOLINGO, INC. CORPORATE August 18, 2011 DLA FULLY PAID AND NONASSESSABLE SHARES OF CLASS A COMMON STOCK, $0.0001 PAR VALUE PER SHARE, OF Duolingo, Inc. transferable on the books of the Corporation in person or by duly authorized attorney upon surrender of this Certificate properly endorsed. This Certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar. WITNESS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. Dated: This certifies that is the record holder of INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE C O U N TE R S IG N E D A N D R E G IS TE R E D : A M ER IC A N STO C K TR A N SFER & TR U ST C O M PA N Y, LLC (B R O O K LY N , N Y ) TR A N S FE R A G E N T A N D R E G IS TR A R B Y: A U TH O R IZE D S IG N ATU R E CHIEF EXECUTIVE OFFICER SECRETARY CUSIP 26603R 10 6 SEE REVERSE FOR CERTAIN DEFINITIONS AND LEGENDS
 
slide2
The Corporation shall furnish without charge to each stockholder who so requests a statement of the powers, designations, preferences and relative, participating, optional or other special rights of each class of stock of the Corporation or series thereof and the qualifications, limitations or restrictions of such preferences and/or rights. Such requests shall be made to the Corporation’s Secretary at the principal office of the Corporation. KEEP THIS CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN, OR DESTROYED THE CORPORATION WILL REQUIRE A BOND INDEMNITY AS A CONDITION TO THE ISSUANCE OF A REPLACEMENT CERTIFICATE. The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: Additional abbreviations may also be used though not in the above list. TEN COM – as tenants in common TEN ENT – as tenants by the entireties JT TEN – as joint tenants with right of survivorship and not as tenants in common COM PROP – as community property UNIF GIFT MIN ACT – ......................... Custodian ......................... (Cust) (Minor) under Uniform Gifts to Minors Act.............................................................................. (State) UNIF TRF MIN ACT – ................. Custodian (until age ..................) (Cust) ..................................... under Uniform Transfers (Minor) to Minors Act............................................................ (State) FOR VALUE RECEIVED, _____________________________________________________ hereby sell(s), assign(s) and transfer(s) unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE shares of the capital stock represented by within Certificate, and do hereby irrevocably constitute and appoint attorney-in-fact to transfer the said stock on the books of the within named Corporation with full power of the substitution in the premises. Dated NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER. By THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION, (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15. GUARANTEES BY A NOTARY PUBLIC ARE NOT ACCEPTABLE. SIGNATURE GUARANTEES MUST NOT BE DATED. Signature(s) Guaranteed: (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE) X X
 

slide1
 D E L AW A R E  SEAL DUOLINGO, INC. CORPORATE August 18, 2011 DLA FULLY PAID AND NONASSESSABLE SHARES OF CLASS A COMMON STOCK, $0.0001 PAR VALUE PER SHARE, OF Duolingo, Inc. transferable on the books of the Corporation in person or by duly authorized attorney upon surrender of this Certificate properly endorsed. This Certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar. WITNESS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. Dated: This certifies that is the record holder of INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE C O U N TE R S IG N E D A N D R E G IS TE R E D : A M ER IC A N STO C K TR A N SFER & TR U ST C O M PA N Y, LLC (B R O O K LY N , N Y ) TR A N S FE R A G E N T A N D R E G IS TR A R B Y: A U TH O R IZE D S IG N ATU R E CHIEF EXECUTIVE OFFICER SECRETARY CUSIP 26603R 10 6 SEE REVERSE FOR CERTAIN DEFINITIONS AND LEGENDS
 
slide2
The Corporation shall furnish without charge to each stockholder who so requests a statement of the powers, designations, preferences and relative, participating, optional or other special rights of each class of stock of the Corporation or series thereof and the qualifications, limitations or restrictions of such preferences and/or rights. Such requests shall be made to the Corporation’s Secretary at the principal office of the Corporation. KEEP THIS CERTIFICATE IN A SAFE PLACE. IF IT IS LOST, STOLEN, OR DESTROYED THE CORPORATION WILL REQUIRE A BOND INDEMNITY AS A CONDITION TO THE ISSUANCE OF A REPLACEMENT CERTIFICATE. The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: Additional abbreviations may also be used though not in the above list. TEN COM – as tenants in common TEN ENT – as tenants by the entireties JT TEN – as joint tenants with right of survivorship and not as tenants in common COM PROP – as community property UNIF GIFT MIN ACT – ......................... Custodian ......................... (Cust) (Minor) under Uniform Gifts to Minors Act.............................................................................. (State) UNIF TRF MIN ACT – ................. Custodian (until age ..................) (Cust) ..................................... under Uniform Transfers (Minor) to Minors Act............................................................ (State) FOR VALUE RECEIVED, _____________________________________________________ hereby sell(s), assign(s) and transfer(s) unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE shares of the capital stock represented by within Certificate, and do hereby irrevocably constitute and appoint attorney-in-fact to transfer the said stock on the books of the within named Corporation with full power of the substitution in the premises. Dated NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER. By THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION, (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15. GUARANTEES BY A NOTARY PUBLIC ARE NOT ACCEPTABLE. SIGNATURE GUARANTEES MUST NOT BE DATED. Signature(s) Guaranteed: (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE) X X

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