Document:

Exhibit 4.11

 

FIRST Supplemental
Indenture

 

FIRST SUPPLEMENTAL INDENTURE (this “Supplemental
Indenture”), dated as of December 29 2020, between PureCycle Technologies LLC, a Delaware limited liability (the “Company”)
and U.S. Bank National Association, as trustee (in such capacity, the “Trustee”) and collateral agent under
the Indenture referred to below (in such capacity, the “Collateral Agent”).

 

W I T N E S S E T H

 

WHEREAS, the Company has heretofore executed
and delivered to the Trustee an indenture (as amended or supplemented, the “Indenture”), dated as of October
7, 2020, providing for the initial issuance of an aggregate principal amount of $48,000,000 of 5.875% Convertible Senior Secured
Notes due 2022 of the Company (the “Initial Secured Notes”);

 

WHEREAS, the issuance and delivery of an
additional aggregate principal amount of $12,000,000 (the “Second Tranche Notes”) have been authorized by resolutions
adopted by the Board of Directors of the Company;

 

WHEREAS, the Second Tranche Notes shall
be Second Tranche Notes and Additional Notes as provided by Section 2.10 of the Indenture with the same terms as the
Initial Secured Notes (except for differences in issue date, issue price and interest accrued, and the Second Tranche Notes will
be subject to a Special Mandatory Redemption (as defined in the Indenture)); provided that the Second Tranche Notes will
also have a separate CUSIP number;

 

WHEREAS, Section 10.01(m) of the Indenture
provides, among other things, that the Company, the Guarantors, if any, the Trustee and the Collateral Agent may amend or supplement
the Indenture Documents without the consent of any Holder to provide for the issuance of the Second Tranche Notes;

 

WHEREAS, the Company has complied with
all applicable conditions precedent provided for in the Indenture related to the issuance of the Second Tranche Notes;

 

WHEREAS, the Initial Secured Notes and
the Second Tranche Notes will be treated as a single class of Notes for all purposes under the Indenture (as supplemented by this
Supplemental Indenture, including, without limitation, waivers, amendments, redemptions and offers to purchase); and

 

WHEREAS, the Company has requested that
the Trustee and the Collateral Agent execute and deliver this Supplemental Indenture.

 

NOW THEREFORE, in consideration of the
foregoing and for other good and valuable consideration, the receipt and adequacy of which is hereby acknowledged, the Company,
the Trustee and the Collateral Agent mutually covenant and agree for the equal and ratable benefit of the Holders as follows:

 

    1

     

    

 

1.                 
 CAPITALIZED TERMS. Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.
Unless the context otherwise requires, the terms defined in this Supplemental Indenture have the meanings hereinafter set forth:

 

“Escrow
Agent” has the meaning specified in Section 5(a) of this Supplemental Indenture.

 

“Escrow
End Date” has the meaning specified in Section 5(a) of this Supplemental Indenture.

 

“Escrow
Redemption Notice” has the meaning specified in Section 4(b) of this Supplemental Indenture.

 

“Special
Mandatory Redemption” has the meaning specified in Section 4(a) of this Supplemental Indenture.

 

“Special
Mandatory Redemption Date” has the meaning specified in Section 4(b) of this Supplemental Indenture.

 

“Special
Mandatory Redemption Price” has the meaning specified in Section 4(c) of this Supplemental Indenture.

 

“Special
Mandatory Redemption Triggering Event” has the meaning specified in Section 4(a) of this Supplemental Indenture.

 

2.                 
TERMS OF THE SECOND TRANCHE NOTES.

 

		a.	The aggregate principal amount of the Second Tranche Notes that may be authenticated and delivered
under the Indenture, as amended hereby, will be $12,000,000.
	 	 	 
		b.	The Second Tranche Notes will be issuable in whole or in part in the form of one or more Global Securities.
The depositary for such Global Securities shall be The Depository Trust Company.
	 	 	 
		c.	The Second Tranche Notes will have the other terms set forth in the form of global security attached
hereto as Exhibit A.
	 	 	 
		d.	The Second Tranche Notes shall be considered Second Tranche Notes and Additional Notes issued pursuant
to Section 2.10 of the Indenture with the same terms as the Initial Secured Notes (except for any differences in issue date,
issue price and interest accrued, and the Second Tranche Notes shall be subject to a Special Mandatory Redemption); provided
that such Second Tranche Notes shall have a separate CUSIP number.

 

3.                 
FORM OF THE SECOND TRANCHE NOTES.

 

		a.	In accordance with Section 2.10 of the Indenture, the Second Tranche Notes will be issued
in the form of Global Note as follows: Certificate No. A-1 (CUSIP No. 74624R AC5 / ISIN
No. US74624RAC51) in the aggregate principal amount of $12,000,000.

 

    2

     

    

 

		b.	The Second Tranche Notes shall be executed on behalf of the Company by an Officer and authenticated
by the Trustee pursuant to Section 2.04 of the Indenture.

 

		c.	The Trustee may conclusively rely on the applicable Company Order as to whether any Notes presented
to the Trustee for authentication constitute the Second Tranche Notes.

 

4.                 
SPECIAL MANDATORY REDEMPTION.

 

		a.	The Second Tranche Notes shall be redeemed in whole and not in part (a “Special Mandatory
Redemption”) in the event that the SPAC Transaction has not been consummated on or prior to May 15, 2021 (the “Special
Mandatory Redemption Triggering Event”).

 

		b.	Notice of the Special Mandatory Redemption (the “Escrow Redemption Notice”)
will set forth the date fixed for the Special Mandatory Redemption, which date shall be no earlier than two Business Days after
the date of the Escrow Redemption Notice and no later than the third Business Day after the Special Mandatory Redemption Triggering
Event (the “Special Mandatory Redemption Date”). The Escrow Redemption Notice shall be provided by the Company
to the Escrow Agent, the Trustee and to each registered Holder of the Second Tranche Notes at each of their registered address
or email, at the Company’s discretion.

 

		c.	Upon a Special Mandatory Redemption, the Company shall pay the sum of 100% of the aggregate principal
amount of all, but not less than all, of the Second Tranche Notes to be redeemed plus, in each case, accrued and unpaid
interest thereon from the date of issue, or from the most recent date to which interest has been paid or provided for, if any,
to, but excluding, the Special Mandatory Redemption Date (the “Special Mandatory Redemption Price”).

 

		d.	On and after the Special Mandatory Redemption Date, interest shall cease to accrue on the Second
Tranche Notes unless the Company defaults in the payment of the Special Mandatory Redemption Price. On or before the Special Mandatory
Redemption Date, the Company shall deposit with the Trustee or a paying agent, funds sufficient to pay the Special Mandatory Redemption
Price to be redeemed on the Special Mandatory Redemption Date.

 

		e.	Upon consummation of the SPAC Transaction on or before May 15, 2021, this Section 4 and
the terms and conditions of the Special Mandatory Redemption shall cease to apply and shall have no continuing effect.

 

    3

     

    

 

5.                 
ESCROW PROVISIONS.

 

		a.	Pursuant to Section 10.01(m) of the Indenture, the Company, the Trustee and U.S. Bank National
Association, as escrow agent (the “Escrow Agent”) executed and delivered an Escrow Agreement, dated December
15, 2020, providing that the gross proceeds from the sale of the Second Tranche Notes shall be held in escrow until the earlier
of (a) May 15, 2021 and (b) the date on which the Release Date (as defined in the Escrow Agreement) occurs (the “Escrow
End Date”).
	 	 	 
		b.	Notwithstanding Article 14 of the Indenture, no Holder of the Second Tranche Notes shall have
the right to convert any portion of the Second Tranche Notes into Common Stock prior to the Escrow End Date.

 

		c.	Subject to the provisions of the Indenture Documents, by acceptance of the Second Tranche Notes, each
Holder agrees that the Trustee shall, and the Trustee is authorized and directed to, enter into the Escrow Agreement and perform
its duties thereunder in accordance with the terms thereof, binding such Holders to such terms to the extent performed in accordance
therewith; provided, however, that notwithstanding anything to the contrary, the Company hereby agrees that the foregoing
shall not be deemed a waiver of, and shall not be deemed to prohibit, limit or otherwise restrict the exercise of, any right or
remedy that a Holder (or a beneficial owner of the Second Tranche Notes) may have under any other agreement entered into in connection
with the foregoing.

 

6.                 
DEFAULTS AND REMEDIES. Section 6.01 (“Events of Default”) of the Indenture shall be applicable to the
Second Tranche Notes. In addition, each of the following shall be an “Event of Default” with respect to the Second
Tranche Notes:

 

		a.	a failure by the Company to comply in any material respect with any of its obligations under the Escrow
Agreement;

 

		b.	a default in the payment of the Special Mandatory Redemption Price when due and payable upon the Special
Mandatory Redemption Date; and 
	 	 	 
		c.	a failure by the Company to redeem the Second Tranche Notes at the Special Mandatory Redemption
Date if, and when, required pursuant to Section 4 of this Supplemental Indenture.

 

7.                 
EFFECTIVENESS. This Supplemental Indenture shall be effective upon execution by the parties hereto.

 

8.                 
RECITALS. The recitals contained herein shall be taken as the statements of the Company and the Trustee assumes no responsibility
for their correctness. The Trustee makes no representations as to the validity of this Supplemental Indenture.

 

9.                 
NEW YORK LAW TO GOVERN. THIS SUPPLEMENTAL INDENTURE, AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING UNDER OR RELATED TO
THIS SUPPLEMENTAL INDENTURE, SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

 

    4

     

    

 

10.              
COUNTERPARTS. The parties hereto may sign any number of copies of this Supplemental Indenture (including by electronic transmission).
Each signed copy shall be an original, but all of them together represent the same agreement. The exchange of copies of this Supplemental
Indenture and of signature pages by facsimile or portable document format transmission shall constitute effective execution and
delivery of this Supplemental Indenture as to the parties hereto and may be used in lieu of the original Supplemental Indenture
for all purposes. Signatures of the parties hereto transmitted by facsimile or portable document format shall be deemed to be their
original signatures for all purposes.

 

11.               
EFFECT OF HEADINGS. The Section headings herein are for convenience only and shall not affect the construction hereof.

 

12.              
ACCEPTANCE BY THE TRUSTEE: Neither the Trustee nor the Collateral Agent assumes any responsibility for the correctness of
the recitals contained herein, which shall be taken as the statements of the Company and the Trustee and the Collateral Agent shall
not be responsible or accountable in any way whatsoever for or with respect to the validity, execution or sufficiency of this Supplemental
Indenture and make no representation with respect thereto.

 

13.               
SEVERABILITY. In case any provision in this Supplemental Indenture shall be invalid, illegal or unenforceable, the validity,
legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby and such provision
shall be ineffective only to the extent of such invalidity, illegality or unenforceability.

 

14.               
RATIFICATION OF INDENTURE; SUPPLEMENTAL INDENTURES PART OF INDENTURE. Except as expressly amended hereby, the Indenture
is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect.
This Supplemental Indenture shall form a part of the Indenture for all purposes, and every Holder of Notes heretofore or hereafter
authenticated and delivered shall be bound hereby.

 

(signature pages follow)

 

    5

     

    

 

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

 

	 	PURECYCLE TECHNOLOGIES LLC
	 	 
	 	By:	/s/ Michael Otworth
	 	 	Name: Michael Otworth
	 	 	Title: Chief Executive Officer
	 	 
	 	U.S. BANK NATIONAL ASSOCIATION,
    as Trustee and Collateral Agent
	 	 
	 	By:	/s/ Michael McGuire
	 	 	Name: Michael McGuire
	 	 	Title: Vice President

 

    6

     

    

 

EXHIBIT A

 

FACE OF
NOTE

 

UNLESS THIS CERTIFICATE
IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”),
TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE
NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT HEREUNDER
IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE,
OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE &
CO., HAS AN INTEREST HEREIN.

 

THE SALE OF THIS NOTE
HAS NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY,
PRIOR TO THE RESALE RESTRICTION TERMINATION DATE (AS DEFINED BELOW), THIS NOTE MAY NOT BE OFFERED, PLEDGED, RESOLD OR OTHERWISE
TRANSFERRED, EXCEPT:

 

(A)       TO
PURECYCLE TECHNOLOGIES LLC (THE “COMPANY”) OR ANY SUBSIDIARY THEREOF;

 

(B)        PURSUANT
TO, AND IN ACCORDANCE WITH, A REGISTRATION STATEMENT THAT IS EFFECTIVE UNDER THE SECURITIES ACT AT THE TIME OF SUCH TRANSFER;

 

(C)        TO
A PERSON THAT YOU REASONABLY BELIEVE TO BE (1) A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES
ACT OR (2) AN ACCREDITED INSTITUTIONAL INVESTOR, WITHIN THE MEANING OF CLAUSES (1), (2), (3), (7), (8), (9) AND (12) OF RULE 501(A)
OF REGULATION D UNDER THE SECURITIES ACT; OR

 

(D)       UNDER
ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT (INCLUDING, IF AVAILABLE, THE EXEMPTION
PROVIDED BY RULE 144 UNDER THE SECURITIES ACT).

 

IN EACH CASE, IN ACCORDANCE
WITH APPLICABLE STATE SECURITIES LAWS.

 

THE “RESALE
RESTRICTION TERMINATION DATE” MEANS THE LATER OF (1) THE DATE THAT IS ONE YEAR AFTER THE LAST DATE OF ORIGINAL ISSUANCE
OF THE NOTES, (2) THE EXPIRATION OF ANY APPLICABLE HOLDING PERIOD WITH RESPECT TO THE NOTES PURSUANT TO RULE 144 OR ANY SUCCESSOR
PROVISION THERETO, AND (3) THE DATE ON WHICH THE NOTES CONSTITUTE “COVERED SECURITIES” UNDER SECTION 18 OF THE
SECURITIES ACT.

 

    A-1

     

    

 

WITH
RESPECT TO ANY TRANSFER PURSUANT TO THE FOREGOING CLAUSE (C)(2) AND CLAUSE (D), THE COMPANY AND THE NOTE REGISTRAR SHALL BE ENTITLED
TO REQUIRE THE DELIVERY OF SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS THEY MAY REASONABLY REQUIRE AND MAY RELY
UPON FOR THE COMPANY TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT
TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS.

 

THE SHARES OF COMMON
STOCK ISSUABLE UPON CONVERSION OF THIS NOTE HAVE NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES
ACT”), AND ACCORDINGLY, SUCH SHARES MAY BE “RESTRICTED SECURITIES” THAT MAY NOT BE OFFERED, PLEDGED,
RESOLD OR OTHERWISE TRANSFERRED EXCEPT TO THE ISSUER OF SUCH SECURITIES (OR ANY SUBSIDIARY THEREOF), PURSUANT TO, AND IN ACCORDANCE
WITH, A REGISTRATION STATEMENT THAT IS EFFECTIVE UNDER THE SECURITIES ACT AT THE TIME OF SUCH TRANSFER, OR PURSUANT TO AN AVAILABLE
EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. 

 

    A-2

     

    

 

	PureCycle Technologies LLC
	 
	Convertible Senior Secured Note due 2022 (Second Tranche Notes)
	 
	No. A-1	 Initially $12,000,000
	 
	CUSIP No. 74624R AC5

 

PureCycle Technologies
LLC, a limited liability company duly organized and validly existing under the laws of the State of Delaware (the “Company,”
which term includes any successor corporation or other entity under the Indenture referred to on the reverse hereof), for value
received hereby promises to pay to CEDE & CO., or registered assigns, the principal sum as set forth in the “Schedule
of Exchanges of Notes” attached hereto in accordance with the rules and procedures of the Depositary, which amount, shall
not exceed $12,000,000, subject to any PIK Payments permitted by the Indenture that are made pursuant to Section 2.03(c)(i)(2)
thereof, and except for (i) Notes authenticated and delivered upon registration or transfer of, or in exchange for, or in lieu
of other Notes to the extent expressly permitted by the Indenture and (ii) Additional Notes issued in accordance with the terms
of the Indenture, on October 15, 2022, subject to a six-month maturity extension at the Issuer’s option with respect to 50%
of the then outstanding Notes (on a pro rata basis) pursuant to Section 2.11 of the Indenture, and interest thereon
as set forth below.

 

This Note shall bear
interest at the rate of 5.875% per year from December 29, 2020, or from the most recent date to which interest had been paid or
provided for to, but excluding, the next scheduled Interest Payment Date until the Maturity Date.

 

Interest is payable
monthly in arrears on each April 15 and October 15, commencing on April 15, 2021, to Holders of record at the close of business
on the preceding April 1 and October 1 (whether or not such record date is a Business Day), respectively. Accrued interest on the
Notes shall be computed on the basis of a 360-day year composed of twelve 30-day months or, in the case of a partial month, the
actual number of days elapsed over a 30-day month and shall be compounded semi-annually.

 

Interest will be payable,
at the election of the Company (made by delivering a notice to the Trustee prior to the beginning of the related Interest Period),
(1) entirely in Cash Interest or (2) entirely in PIK Interest. In the absence of an interest payment election, interest on the
Notes will be payable in PIK Interest. Notwithstanding anything to the contrary, the payment of accrued interest shall be made
solely in cash, (A) in connection with any repurchase of Notes as described under Section 15.02 and Section 15.03
of the Indenture, (1) with respect to all Notes, if the related Fundamental Change Repurchase Date or Change of Control Repurchase
Date, as applicable, is after a Regular Record Date and on or prior to the Scheduled Trading Day immediately following the date
on which the corresponding interest payment is made or (2) solely with respect to the Notes to be repurchased, if the related Fundamental
Change Repurchase Date or Change of Control Repurchase Date, as applicable, is on any other date, (B) with respect to all Notes,
if any Notes are surrendered for conversion after the close of business on a Regular Record Date for the payment of interest and
on or prior to the related Interest Payment Date, (C) with respect to all Second Tranche Notes pursuant to a Special Mandatory
Redemption, and (D) on the final Interest Payment Date.

 

    A-3

     

    

 

Following
an increase in the principal amount of any outstanding Global Notes as a result of a PIK Payment, such Global Note will bear interest
on such increased principal amount from and after the date of such PIK Payment. Any PIK Notes issued in certificated form will
be dated as of the applicable Interest Payment Date and will bear interest from and after such date. All PIK Notes issued pursuant
to a PIK Payment will be governed by, and subject to the terms, provisions and conditions of, the Indenture and shall have the
same rights and benefits as the Notes issued on the Issue Date.

 

Any Defaulted Amounts
shall accrue interest per annum at the rate borne by the Notes, subject to the enforceability thereof under applicable law, from,
and including, the relevant payment date to, but excluding, the date on which such Defaulted Amounts shall have been paid by the
Company, at its election, in accordance with Section 2.03(d) of the Indenture.

 

The Company shall pay
the principal of and interest (other than PIK Interest) on this Note, if and so long as such Note is a Global Note, in immediately
available funds to the Depositary or its nominee, as the case may be, as the registered Holder of such Note. As provided in and
subject to the provisions of the Indenture, the Company shall pay the principal of any Notes (other than Notes that are Global
Notes) at the office or agency designated by the Company for that purpose. The Company has initially designated the Trustee as
its Paying Agent and Note Registrar in respect of the Notes and its agency in the continental United States of America as a place
where Notes may be presented for payment or for registration of transfer and exchange.

 

At all times, PIK Interest
on the Notes will be payable (x) with respect to Notes represented by one or more Global Notes registered in the name of, or held
by, the Depositary or its nominee on the relevant Regular Record Date, by increasing the principal amount of the outstanding Global
Note by an amount equal to the amount of PIK Interest for the applicable Interest Period (rounded to the nearest whole dollar,
with amounts of $0.50 or more being rounded up), or by issuing a new Global Note, if required pursuant to the applicable procedures
of the Depositary, in each case, as provided in writing by the Company to the Trustee, and the Trustee, at the written request
of the Company, will record such increase in such Global Note and (y) with respect to Notes represented by Physical Notes, by issuing
PIK Notes in certificated form in an aggregate principal amount equal to the amount of PIK Interest for the applicable Interest
Period (rounded to the nearest whole dollar, with amounts of $0.50 or more being rounded up), and the Trustee will, at the written
request of the Company in a Company Order, authenticate and deliver such PIK Notes in certificated form for original issuance to
the Holders on the relevant Regular Record Date, as shown in the register of the Note Registrar.

 

Reference is made to
the further provisions of this Note set forth on the reverse hereof, including, without limitation, provisions giving the Holder
of this Note the right to convert this Note into shares of Common Stock on the terms and subject to the limitations set forth in
the Indenture. Such further provisions shall for all purposes have the same effect as though fully set forth at this place.

 

This Note, and any
claim, controversy or dispute arising under or related to this Note, shall be construed in accordance with and governed by the
laws of the State of New York.

 

In the case of any
conflict between this Note and the Indenture, the provisions of the Indenture shall control and govern.

 

    A-4

     

    

 

This
Note shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall have been signed
manually by the Trustee or a duly authorized authenticating agent under the Indenture.

 

[Remainder of page intentionally left
blank]

 

    A-5

     

    

 

 

IN WITNESS WHEREOF, the Company has caused
this Note to be duly executed.

 

	 	PURECYCLE TECHNOLOGIES LLC
	 	 
	 	 
	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 

 

TRUSTEE’S CERTIFICATE OF AUTHENTICATION

 

U.S. BANK NATIONAL ASSOCIATION,

as Trustee, certifies that this is one of the Notes described in the within-named Indenture.

 

	By:	 	 
	Authorized Signatory	 
	 	 
	 	 
	Dated:	 

 

    A-6

     

    

 

REVERSE
OF NOTE

PureCycle Technologies LLC

Convertible Senior Secured Note due 2022

(Second Tranche Notes)

 

This Note is one of
a duly authorized issue of Second Tranche Notes of the Company, designated as its Convertible Senior Secured Notes due 2022 (the
 “Notes”), in the aggregate principal amount of $12,000,000, subject to any PIK Payments permitted by the Indenture
that are made pursuant to Section 2.03(c)(i)(2) thereof, and except for (i) Notes authenticated and delivered upon registration
or transfer of, or in exchange for, or in lieu of other Notes to the extent expressly permitted by the Indenture and (ii) Additional
Notes issued in accordance with the terms of the Indenture, all issued or to be issued under and pursuant to an Indenture dated
as of October 7, 2020, as supplemented by the First Supplemental Indenture dated as of December 29 2020 (the “Supplemental
Indenture” and, as so supplemented and together, the “Indenture”), between the Company and U.S. Bank
National Association, a national banking association, as trustee (the “Trustee”) and collateral agent (the “Collateral
Agent”), to which the Indenture and all indentures supplemental thereto reference is hereby made for a description of
the rights, limitations of rights, obligations, duties and immunities thereunder of the Trustee, the Company and the Holders of
the Notes. Additional Notes may be issued subject to certain conditions specified in the Indenture. Capitalized terms used in this
Note and not defined in this Note shall have the respective meanings set forth in the Indenture.

 

In case certain Events
of Default shall have occurred and be continuing, the principal of, and interest on, all Notes may be declared, by either the Trustee
or Holders of at least 25% in aggregate principal amount of Notes then outstanding, and upon said declaration shall become, due
and payable, in the manner, with the effect and subject to the conditions and certain exceptions set forth in the Indenture.

 

Subject to the terms
and conditions of the Indenture, the Company will make all payments and deliveries in respect of the Fundamental Change Repurchase
Price or Change of Control Repurchase Price on the Fundamental Change Repurchase Date or the Change of Control Repurchase Date,
as applicable, and the principal amount on the Maturity Date, as the case may be, to the Holder who surrenders a Note to a Paying
Agent to collect such payments in respect of the Note. The Company will pay cash amounts in money of the United States that at
the time of payment is legal tender for payment of public and private debts.

 

The Indenture contains
provisions permitting the Company and the Trustee and the Collateral Agent in certain circumstances, without the consent of the
Holders of the Notes, and in certain other circumstances, with the consent of the Holders of not less than the Minimum Principal
Amount of the Notes at the time outstanding, evidenced as in the Indenture provided, to execute supplemental indentures modifying
the terms of the Indenture and the Notes as described therein. It is also provided in the Indenture that, subject to certain exceptions,
the Holders of the Minimum Principal Amount of the Notes at the time outstanding may on behalf of the Holders of all of the Notes
waive any past Default or Event of Default under the Indenture and its consequences.

 

    A-7

     

    

 

No reference
herein to the Indenture and no provision of this Note or of the Indenture shall alter or impair the obligation of the
Company, which is absolute and unconditional, to pay or deliver, as the case may be, the principal of, accrued and unpaid
interest on, and the consideration due upon conversion of, this Note at the place, at the respective times, at the rate and
in the lawful money or shares of Common Stock, as the case may be, herein prescribed.

 

The Notes are issuable
in registered form without coupons in denominations of $1,000 principal amount and integral multiples thereof; provided
that after a PIK Payment, the Notes shall be in minimum denominations of $1.00 and any integral multiple of $1.00 in excess thereof.
At the office or agency of the Company referred to on the face hereof, and in the manner and subject to the limitations provided
in the Indenture, Notes may be exchanged for a like aggregate principal amount of Notes of other authorized denominations, without
payment of any service charge but, if required by the Company or Trustee, with payment of a sum sufficient to cover any documentary,
stamp or similar issue or transfer tax or similar governmental charge that may be imposed in connection therewith as a result of
the name of the Holder of the new Notes issued upon such exchange of Notes being different from the name of the Holder of the old
Notes surrendered for such exchange.

 

The Notes may not be
redeemed and are not subject to any sinking fund; provided, however, that if a Special Mandatory Redemption Triggering Event
occurs, the Company shall redeem all of the Second Tranche Notes in accordance with the provisions of Section 4 of the Supplemental
Indenture.

 

On or after a Qualified
Public Company Event or Other Listing Event, and upon the occurrence of a Fundamental Change, the Holder has the right, at such
Holder’s option and subject to the provisions of the Indenture, to require the Company to repurchase for cash all of such
Holder’s Notes or any portion thereof (in principal amounts of $1,000 (or, if a PIK Payment has been made, in principal amounts
of $1.00) or integral multiples thereof) on the Fundamental Change Repurchase Date at a price equal to the Fundamental Change Repurchase
Price.

 

If a Change of Control
occurs at any time prior to the Qualified Public Company Event, the Holder has the right, at such Holder’s option and subject
to the provisions of the Indenture, to require the Company to repurchase for cash all of such Holder’s Notes or any portion
thereof (in principal amounts of $1,000 (or, if a PIK Payment has been made, in principal amounts of $1.00) or integral multiples
thereof) on the Change of Control Repurchase Date at a price equal to the Change of Control Repurchase Price.

 

The Notes are convertible
into Common Stock in accordance with the terms of the Indenture.

 

The payment of the
principal of, premium, if any, and interest, if any, on the Notes, is unconditionally guaranteed, jointly and severally, by the
Guarantors, if any, to the extent set forth in and subject to the provisions of the Indenture.

 

The Obligations of
the Company and the Guarantors, if any, under the Notes and the Note Guarantees, if any, are secured by Liens on the Collateral
pursuant to the terms of the Security Documents.

 

    A-8

     

    

 

ABBREVIATIONS

 

The following abbreviations,
when used in the inscription of the face of this Note, shall be construed as though they were written out in full according to
applicable laws or regulations:

 

TEN COM = as tenants in common

 

UNIF GIFT MIN ACT = Uniform Gifts to Minors
Act

 

CUST = Custodian

 

TEN ENT = as tenants by the entireties

 

JT TEN = joint tenants with right of survivorship
and not as tenants in common

 

Additional abbreviations
may also be used though not in the above list.

 

    A-9

     

    

 

SCHEDULE
OF EXCHANGES OF NOTES

PureCycle Technologies LLC

Convertible Senior Secured Notes due 2022

(Second Tranche Notes)

 

The initial principal
amount of this Global Note is TWELVE MILLION DOLLARS ($12,000,000). The following increases or decreases in this Global Note have
been made:

 

	Date of exchange	 	Amount of 

decrease in 

principal

 amount of this

 Global Note	 	Amount of

 increase in

 principal 

amount of this 

Global Note	 	Principal

 amount of this

 Global Note

 following such

 decrease or 

increase	 	Signature of

 authorized

 signatory of

 Trustee or

 Custodian
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 	 

 

    A-10

     

    

 

FORM OF
NOTICE OF CONVERSION

 

PureCycle Technologies LLC

Convertible Senior Secured Notes due 2022

 

		To:	PureCycle Technologies LLC

5950 Hazeltine National Drive, Suite 650

Orlando, FL 32822

 

U.S. BANK NATIONAL ASSOCIATION

Denver Tower

950 17th Street

Denver, CO 80202

Attention: PureCycle Technologies LLC Convertible Senior Secured Notes due 2022  (Second Tranche Notes)

 

The undersigned registered
owner of this Note hereby exercises the option to convert this Note, or the portion hereof (that is $1,000 principal amount (or
if a PIK Payment has been made, $1.00 principal amount) or an integral multiple thereof) below designated pursuant to:

 

Section 14.02,

 

in accordance with
the terms of the Indenture referred to in this Note, and directs that any cash payable and any shares of Common Stock issuable
and deliverable upon such conversion, together with any cash for any fractional share, and any Notes representing any unconverted
principal amount hereof, be issued and delivered to the registered Holder hereof unless a different name has been indicated below.
If any shares of Common Stock or Preferred Stock, as the case may be, or any portion of this Note not converted are to be issued
in the name of a Person other than the undersigned, the undersigned will pay all documentary, stamp or similar issue or transfer
taxes, if any in accordance with Section 14.03(d) and Section 14.03(e) of the Indenture. Any amount required to be
paid to the undersigned on account of interest accompanies this Note.

 

The undersigned Holder
represents and warrants that the Notes delivered for conversion represents:

 

[__]       At
least the Minimum Conversion Amount; or

 

[__]       If
less than the Minimum Conversion Amount, all of the Notes held at such time by such Holder.

 

Capitalized terms used
herein but not defined shall have the meanings ascribed to such terms in the Indenture.

 

	Dated:	 	 
	 	 	 
	 	 	 
		 	 
	 	 	Signature(s)

 

    A-11

     

    

 

	              	 
	 	 
	Signature Guarantee	 
	 	 
	Signature(s) must be guaranteed	 
	 	 
	by an eligible Guarantor Institution	 
	 	 
	(banks, stock brokers, savings and
 loan associations and credit unions)
 with membership in an approved
 signature guarantee medallion program
 pursuant to Securities and Exchange
 Commission Rule 17Ad-15 if shares
 of Common Stock are to be issued, or
 Notes are to be delivered, other than
 to and in the name of the registered holder.	 
	 	 
	Fill in for registration of shares if
 to be issued, and Notes if to
 be delivered, other than to and in the
 name of the registered holder:	 

 

	 	 
	 	 
	(Name)	 
	 	 
	 	 
	 	 
	(Street Address)	 
	 	 
	 	 
	(City, State and Zip Code)	 
	Please print name and address	 

 

	 	Principal amount to be converted (if less than all):
 $______,000

	 	 
	 	NOTICE: The above signature(s) of the Holder(s) hereof must correspond
    with the name as written upon the face of the Note in every particular without alteration or enlargement or any
    change whatever.
	 	 
	 	 
	 	 
	 	Social Security or Other Taxpayer Identification Number

 

    A-12

     

    

 

FORM OF
FUNDAMENTAL CHANGE REPURCHASE NOTICE

 

PureCycle Technologies LLC

Convertible Senior Secured Notes due 2022

 

		To:	PureCycle Technologies LLC

5950 Hazeltine National Drive, Suite 650

Orlando, FL 32822

 

U.S. BANK NATIONAL ASSOCIATION

Denver Tower

950 17th Street

Denver, CO 80202

Attention: PureCycle Technologies LLC Convertible Senior Secured Notes due 2022   (Second Tranche Notes)

 

The undersigned registered
owner of this Note hereby acknowledges receipt of a notice from PureCycle Technologies LLC (the “Company”) as
to the occurrence of a Fundamental Change with respect to the Company and specifying the Fundamental Change Repurchase Date and
requests and instructs the Company to pay to the registered holder hereof in accordance with Section 15.02 of the Indenture
referred to in this Note (1) the entire principal amount of this Note, or the portion thereof (that is $1,000 principal amount
(or if a PIK Payment has been made, $1.00 principal amount) or an integral multiple thereof) below designated, and (2) if such
Fundamental Change Repurchase Date does not fall during the period after a Regular Record Date and on or prior to the Scheduled
Trading Day immediately following the corresponding Interest Payment Date, accrued and unpaid interest, if any, thereon to, but
excluding, such Fundamental Change Repurchase Date. Capitalized terms used herein but not defined shall have the meanings ascribed
to such terms in the Indenture.

 

In the case of Physical
Notes, the certificate numbers of the Notes to be repurchased are as set forth below:

 

	Dated:	 	
	 	 
	 	 
	 	Signature(s)
	 	 
	 	 
	 	Social Security or Other Taxpayer Identification Number
	 	 
	 	Principal amount to be repaid (if less than all): 
	 	$______,000
	 	 
	 	NOTICE: The above signature(s) of the Holder(s) hereof must correspond
    with the name as written upon the face of the Note in every particular without alteration or enlargement or any change
    whatever.

 

    A-13

     

    

 

FORM OF
CHANGE OF CONTROL REPURCHASE NOTICE

 

PureCycle Technologies LLC

Convertible Senior Secured Notes due 2022

 

		To:	PureCycle Technologies LLC

5950 Hazeltine National Drive, Suite 650

Orlando, FL 32822

 

U.S. BANK NATIONAL ASSOCIATION

Denver Tower

950 17th Street

Denver, CO 80202

Attention: PureCycle Technologies LLC Convertible Senior Secured Notes due 2022   (Second Tranche Notes)

 

The undersigned registered
owner of this Note hereby acknowledges receipt of a notice from PureCycle Technologies LLC (the “Company”) as
to the occurrence of a Change of Control with respect to the Company and specifying the Change of Control Repurchase Date and requests
and instructs the Company to pay to the registered holder hereof in accordance with Section 15.03 of the Indenture referred
to in this Note (1) the entire principal amount of this Note, or the portion thereof (that is $1,000 principal amount (or if a
PIK Payment has been made, $1.00 principal amount) or an integral multiple thereof) below designated, and (2) if such Change of
Control Repurchase Date does not fall during the period after a Regular Record Date and on or prior to the Scheduled Trading Day
immediately following the corresponding Interest Payment Date, accrued and unpaid interest, if any, thereon to, but excluding,
such Change of Control Repurchase Date. Capitalized terms used herein but not defined shall have the meanings ascribed to such
terms in the Indenture.

 

In the case of Physical
Notes, the certificate numbers of the Notes to be repurchased are as set forth below:

 

	Dated:	 	
	 	 
	 	 
	 	Signature(s)
	 	 
	 	 
	 	Social Security or Other Taxpayer Identification Number
	 	 
	 	Principal amount to be repaid (if less than all): 
	 	$______,000
	 	 
	 	NOTICE: The above signature(s) of the Holder(s) hereof must correspond
    with the name as written upon the face of the Note in every particular without alteration or enlargement or any change
    whatever.

 

    A-14

     

    

 

FORM OF
ASSIGNMENT AND TRANSFER

 

PureCycle Technologies LLC

Convertible Senior Secured Notes due 2022

(Second Tranche Notes)

 

For value received
____________________________ hereby sell(s), assign(s) and transfer(s) unto _________________ (Please insert social security or
Taxpayer Identification Number of assignee) the within Note, and hereby irrevocably constitutes and appoints _____________________
attorney to transfer the said Note on the books of the Company, with full power of substitution in the premises.

 

In connection with
any transfer of the within Note occurring prior to the Resale Restriction Termination Date, as defined in the Indenture governing
such Note, the undersigned confirms that such Note is being transferred:

 

		·	To PureCycle Technologies LLC or a Subsidiary thereof; or

 

		·	Pursuant to, and in accordance with, a registration statement that is effective under the Securities
Act at the time of such transfer; or

 

		·	To a person that the undersigned reasonably believes to be a qualified institutional buyer in compliance
with Rule 144A under the Securities Act of 1933, as amended, or to a person that the undersigned reasonably believes to be an accredited
investor, within the meaning of clauses (1), (2), (3), (7), (8), (9) and (12) of Rule 501(A) of Regulation D under the Securities
Act; or

 

		·	Pursuant to any other available exemption from the registration requirements of the Securities
Act of 1933, as amended (including, if available, the exemption provided by Rule 144 under the Securities Act of 1933, as amended).

 

    A-15

     

    

 

	Dated:	 	 
	 	 
	 	 
	 	 
	Signature(s)	 
	 	 
	 	 
	Signature Guarantee	 
	 	 
	Signature(s) must be guaranteed by an
 eligible Guarantor Institution (banks, stock
 brokers, savings and loan associations and
 credit unions) with membership in an approved
 signature guarantee medallion program pursuant
 to Securities and Exchange Commission
 Rule 17Ad-15 if Notes are to be delivered, other
 than to and in the name of the registered holder.	 

 

NOTICE: The signature on the assignment
must correspond with the name as written upon the face of the Note in every particular without alteration or enlargement or any
change whatever.

 

    A-16Exhibit 4.13

 

SECOND SUPPLEMENTAL INDENTURE

 

SECOND SUPPLEMENTAL
INDENTURE (this “Second Supplemental Indenture”), dated as of March 17, 2021, by and among PureCycle Technologies
Holdings Corp. (known prior to the closing of the SPAC Transaction as Roth CH Acquisition I Co., “ROCH”), formerly
a special purpose acquisition company, incorporated as a Delaware corporation and direct parent, upon the closing of the SPAC Transaction,
of PureCycle Technologies LLC, a Delaware limited liability company (the “Company”), PureCycle Technologies,
Inc. (known prior to the closing of the SPAC Transaction as Roth CH Acquisition I Co. Parent Corp., “ParentCo”
and, together with ROCH, the “Guarantors”), a subsidiary of ROCH and, upon the closing of the SPAC Transaction,
a direct parent of ROCH and indirect parent of the Company, the Company, and U.S. Bank National Association, as trustee and collateral
agent under the Indenture referred to below (the “Trustee”).

 

W I T N E S S E T H

 

WHEREAS, the
Company has heretofore executed and delivered to the Trustee an indenture (as amended or supplemented, the
 “Indenture”), dated as of October 7, 2020, providing for the issuance of Convertible Senior Secured Notes
due 2022 (the “Initial Secured Notes”);

 

WHEREAS, the Company
has heretofore issued and delivered to the Trustee a supplemental indenture (the “First Supplemental Indenture”),
dated as of December 29, 2020, providing for the issuance of additional Convertible Senior Secured Notes due 2022 (the “Second
Tranche Notes” and, together with the Initial Secured Notes, the “Notes”);

 

WHEREAS, the Second
Tranche Notes are Second Tranche Notes and Additional Notes as provided by Section 2.10 of the Indenture with the same terms
as the Initial Secured Notes (except for differences in issue date, issue price and interest accrued, and the Second Tranche Notes
are subject to a Special Mandatory Redemption (as defined in the Indenture)); provided that the Second Tranche Notes have
a separate CUSIP number;

 

WHEREAS, a SPAC Transaction,
as defined in the Indenture, was consummated on or around March 17, 2021, pursuant to which the Company became a direct or indirect
subsidiary of the Guarantors;

 

WHEREAS, the undersigned
may execute and deliver to the Trustee a supplemental indenture pursuant to which the undersigned become the Guarantors under the
Indenture and shall unconditionally guarantee all of the Company’s obligations under the Indenture Documents pursuant to
a Note Guarantee on the terms and conditions set forth herein;

 

WHEREAS, Section
10.01(c) of the Indenture provides, among other things, that the Company, the Guarantors, if any, and the Trustee may amend
or supplement the Indenture Documents without the consent of any Holder to add the Note Guarantee with respect to the Notes;

 

WHEREAS, pursuant
to Section 4.21 of the Indenture, the Guarantors seek to execute and deliver to the Trustee this Second Supplemental
Indenture pursuant to which the Guarantors shall unconditionally Guarantee, on a senior secured (subject to Section
17.05(a)) basis, all of the Company’s Obligations under the Indenture Documents on the terms set forth in the
Indenture and the Security Documents until the Note Guarantee of the Guarantors has been released in accordance with the
Indenture; and

 

     

     

    

 

WHEREAS, pursuant to
Section 11.03 of the Indenture, ParentCo seeks to unconditionally assume all of the Company’s obligations under the
Notes and the Indenture relating to the Company’s obligations relating to the authorization, issuance and delivery of the
Common Stock issuable upon conversion of the Notes (including, without limitation, Article 14 and the Conversion Obligations).

 

NOW THEREFORE, in consideration
of the foregoing and for other good and valuable consideration, the receipt and adequacy of which is hereby acknowledged, the Guarantors,
the Company and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders as follows:

 

1.        CAPITALIZED
TERMS. Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

 

2.        AGREEMENT
TO GUARANTEE. The Guarantors hereby agree to guarantee the Company’s Obligations under the Notes and the Indenture on the
terms and subject to the conditions set forth in Article 16 of the Indenture, and to be bound by all other applicable provisions
of the Indenture.

 

3.        ASSUMPTION
OF OBLIGATIONS. ParentCo hereby unconditionally assumes all of the Company’s obligations under the Notes and the Indenture
relating to the Company’s obligations relating to the authorization, issuance and delivery of the Common Stock issuable upon
conversion of the Notes (including, without limitation, Article 14 and the Conversion Obligations) and references in such applicable
sections of the Indenture to “the Company” shall refer to “ParentCo”, mutatis mutandis.

 

4.        EFFECTIVENESS.
This Second Supplemental Indenture shall be effective upon execution by the parties hereto. Upon effectiveness of this Second Supplemental
Indenture, the Guarantors will be the Guarantors under the Indenture.

 

5.        RECITALS.
The recitals contained herein shall be taken as the statements of the Company and the Guarantors and the Trustee assumes no responsibility
for their correctness. The Trustee makes no representations as to the validity of this Second Supplemental Indenture.

 

6.        NEW
YORK LAW TO GOVERN. THIS SECOND SUPPLEMENTAL INDENTURE, AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING UNDER OR RELATED TO THIS
SECOND SUPPLEMENTAL INDENTURE, SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.

 

7.
        COUNTERPARTS. The parties hereto may sign any number of copies of this Second
Supplemental Indenture (including by electronic transmission). Each signed copy shall be an original, but all of them
together represent the same agreement. The exchange of copies of this Second Supplemental Indenture and of signature pages by
facsimile or portable document format transmission shall constitute effective execution and delivery of this Second
Supplemental Indenture as to the parties hereto and may be used in lieu of the original Second Supplemental Indenture for all
purposes. Signatures of the parties hereto transmitted by facsimile or portable document format shall be deemed to be their
original signatures for all purposes.

 

    2

     

    

 

8.        EFFECT
OF HEADINGS. The Section headings herein are for convenience only and shall not affect the construction hereof.

 

9.        ACCEPTANCE
BY THE TRUSTEE: The Trustee assumes no responsibility for the correctness of the recitals contained herein, which shall be taken
as the statements of the Company and the Guarantors and the Trustee shall not be responsible or accountable in any way whatsoever
for or with respect to the validity, execution or sufficiency of this Second Supplemental Indenture and make no representation
with respect thereto.

 

10.        SEVERABILITY.
In case any provision in this Second Supplemental Indenture shall be invalid, illegal or unenforceable, the validity, legality
and enforceability of the remaining provisions shall not in any way be affected or impaired thereby and such provision shall be
ineffective only to the extent of such invalidity, illegality or unenforceability.

 

11.        RATIFICATION
OF INDENTURE; SUPPLEMENTAL INDENTURES PART OF INDENTURE. Except as expressly amended hereby, the Indenture is in all respects ratified
and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect. This Second Supplemental
Indenture shall form a part of the Indenture for all purposes, and every Holder of Notes heretofore or hereafter authenticated
and delivered shall be bound hereby.

 

(signature pages follow)

 

    3

     

    

 

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

 

	 	PURECYCLE
    TECHNOLOGIES LLC
	 	 
	 	By:   	/s/ Michael Dee
	 	 	Name: Michael Dee
	 	 	Title: Chief Financial Officer
	 	 
	 	PureCycle
    Technologies Holdings Corp., as
    Guarantor
	 	 
	 	By:	/s/ Michael Dee
	 	 	Name: Michael Dee
	 	 	Title: Chief Financial Officer
	 	 
	 	PURECYCLE TECHNOLOGIES, INC., as Guarantor
	 	 
	 	By:	/s/ Michael Dee
	 	 	Name: Michael Dee
	 	 	Title: Chief Financial Officer
	 	 
	 	U.S. BANK NATIONAL ASSOCIATION, as Trustee and Collateral Agent
	 	 
	 	By:	/s/ Michael McGuire
	 	 	Name: Michael McGuire
	 	 	Title: Vice President

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00324-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00324-of-00352.parquet"}]]