Document:

EX-4.1

 Exhibit 4.1 

*** Text Omitted and Filed Separately 

Confidential Treatment Requested 

Under 17 C.F.R §§ 200.80(b)(4) and 17 C.F.R 24b-2 

EXCHANGE AND PURCHASE AGREEMENT 

This EXCHANGE AND PURCHASE AGREEMENT (this “Agreement”) is dated as of May 9, 2014 by and among Gevo, Inc., a Delaware
corporation (the “Company”), Gevo Development, LLC, a Delaware limited liability company (“Gevo LLC”), Agri-Energy, LLC, a Minnesota limited liability company (“AE
LLC”), and each other party who hereafter executes and delivers a Guarantor Joinder Agreement (an “Additional Guarantor,” and collectively with the Company, Gevo LLC and AE LLC, the “Company
Parties”) in the form attached hereto as Exhibit A (the “Guarantor Joinder Agreement”) agreeing to be bound by the terms hereof, WB Gevo, Ltd., a BVI Business Company incorporated in the British Virgin Islands
(“Whitebox”), Whitebox Advisors LLC, in its capacity as administrative agent under the Loan Agreement (as defined herein) (the “Administrative Agent”), and Whitebox Advisors LLC, in its capacity as representative of
the Purchaser under this Agreement (the “Representative”), and each other party who hereafter executes and delivers a Joinder Agreement (each, a “Joining Party,” and together with Whitebox, referred to herein as a
“Purchaser” or “Lender,” as the context requires) in the form attached as Exhibit B hereto (the “Purchaser Joinder Agreement,” and collectively with the Guarantor Joinder Agreement,
the “Joinder Agreement,”) agreeing to be bound by the terms hereof. 
 RECITALS 

WHEREAS, the Company Parties have entered into a Term Loan Agreement, dated as of the date hereof (the “Loan
Agreement”), by and among the Company Parties, Whitebox and the Administrative Agent, whereby Whitebox has agreed to provide a loan or loans to the Company in an aggregate amount up to $31,088,083, upon the terms and conditions stated in
the Loan Agreement (the “Senior Loan”); 
 WHEREAS, pursuant to the terms of the Loan Agreement, the Lender may
exchange, upon certain conditions, a portion or all of the Senior Loan for the Company’s 10.0% Convertible Senior Secured Notes due 2017 (the “Convertible Notes”); and 

WHEREAS, the parties hereto desire to enter into this Agreement to set forth the rights and obligations of the parties in connection
with such exchange of the Senior Loan and to provide certain other rights and obligations. 
 NOW, THEREFORE, in consideration of
these premises and the mutual agreements, covenants and provisions herein contained, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending to be legally bound,
agree as follows: 
 ARTICLE I 

THE EXCHANGE; ADDITIONAL PURCHASES 

Section 1.1 Right to Exchange. The Administrative Agent, acting on behalf of the Lender, shall from time to time, in one or
more transactions (subject to the restrictions set forth in Section 1.2 hereof), have the right to exchange during the applicable Exchange Period (as defined herein) a portion or all of the Senior Loan for Convertible Notes, upon the terms and
subject to the conditions set forth in Section 2.16 of the Loan Agreement. 

 Section 1.2 Exchange Notice. 

(a) In accordance with the terms of this Agreement, if a party shall elect to exchange all or any portion of the Senior Loan owed to it
pursuant to Section 2.16 of the Loan Agreement during an applicable Exchange Period (as defined herein), the Administrative Agent, acting on behalf of such party, shall deliver a notice (an “Exchange Notice”) specifying the
principal amount of such Senior Loan to be exchanged for Convertible Notes to the Company prior to 5:00 PM (New York City time) three (3) Business Days (as defined herein) prior to the date of the proposed Exchange (as defined herein). For
purposes of this Section 1.2, an “Exchange Period” shall mean: (i) for an Exchange (as defined herein) where the Company shall issue At-the-Market Notes (as defined below) (the “At-the-Market Exchange”),
thirty (30) calendar days beginning on the date the Officer’s Certificate set forth in Section 4.13 hereof is delivered to the Administrative Agent; or (ii) for an Exchange where the Company shall issue Below Market Notes (as
defined below), the Exchange Period shall begin on the date hereof and continue until the later of (x) ninety (90) days following the date hereof and (y) thirty (30) days after the Stockholder Meeting (as defined herein) (the
“Below Market Exchange”). 
 (b) Each Lender may only exercise its right to conduct an At-the-Market Exchange once during
the applicable Exchange Period. Each Lender may conduct a Below Market Exchange any time, and from time to time, during the applicable Exchange Period, so long as the aggregate minimum amount of the Senior Loan to be exchanged is equal to or exceeds
$1,000,000; provided, however, that if the aggregate principal amount outstanding under the Senior Loans is less than $1,000,000, the Lender shall be allowed to exchange such amount in one transaction. 

Section 1.3 Exchange of the Senior Loan for Convertible Notes. Subject to, and upon the terms and conditions set forth in
this Agreement and the Loan Agreement, upon the issuance of an Exchange Notice by the Administrative Agent to the Company, the Company agrees to issue to the parties set forth in the Exchange Notice, and such parties agree to acquire from the
Company, Convertible Notes (the “Exchange Notes”) in exchange for the cancellation (as set forth in Section 2.3 herein) of the same principal amount of the Senior Loan, all in the manner and amount set forth in the applicable
Exchange Notice. The exchange and cancellation of the Senior Loan contemplated by this Section 1.3, and the terms and conditions applicable thereto as set forth in Section 1.2 hereof and elsewhere in this Agreement, are referred to
collectively herein as the “Exchange.” Notwithstanding the foregoing, the Administrative Agent, acting on behalf of the Lender, may designate any Affiliate of the Lender to be the holder of any Exchange Notes received in an Exchange
if such designation shall be set forth in the applicable Exchange Notice and such party executes the Purchaser Joinder Agreement attached hereto. 

Section 1.4 Form of Exchange Notes. 

(a) If the Exchange shall be made pursuant to Section 2.16(a)(i) of the Loan Agreement, the Exchange Notes shall be in the form attached
hereto as Exhibit C (the “At-the-Market Note”), and shall be made pursuant to an indenture in substantially the form attached hereto as Exhibit D, subject to the approval of NASDAQ and the provisions of
Section 1.4(c) below (the “At-the-Market Indenture”). For the avoidance of doubt, the form of indenture 

  
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attached hereto as Exhibit D contains provisions for both an At-the-Market Exchange scenario and a Below Market Exchange scenario and if the Exchange is made pursuant to
Section 2.16(a)(i) of the Loan Agreement, the indenture will be an At-the-Market Indenture that will contain only those provisions applicable to an At-the-Market Exchange. 

(b) If the Exchange shall be made pursuant to Section 2.16(a)(ii) of the Loan Agreement, the Exchange Notes shall be in the form attached
hereto as Exhibit C (the “Below Market Note”), and shall be made pursuant to an indenture in substantially the form attached hereto as Exhibit D, subject to the approval of NASDAQ and the provisions of
Section 1.4(c) below (the “Below Market Indenture”). For the avoidance of doubt, the form of indenture attached hereto as Exhibit D contains provisions for both an At-the-Market Exchange scenario and a Below
Market Exchange scenario and if the Exchange is made pursuant to Section 2.16(a)(ii) of the Loan Agreement, the indenture will be a Below Market Indenture that will contain only those provisions applicable to a Below Market Exchange. 

(c) Each party hereto acknowledges and agrees that the form of indenture attached hereto as Exhibit D will be revised prior to
the Initial Exchange Date to the extent that such parties mutually deem necessary and appropriate in order to ensure that the applicable terms and provisions thereof conform with the corresponding terms of the Loan Agreement (as adjusted to account
for the differing terms and convertible nature of the Exchange Notes) and to reflect the comments of the Trustee (as defined in the Indenture) and the Collateral Trustee (as defined in the Indenture). 

Section 1.5 Additional Purchases. 

(a) In the event that: (i) the Closing Price (as defined herein) of the Company’s common stock, par value $0.01 per share (the
“Common Stock”), equals or is greater than $1.00 per share on at least twenty (20) Trading Days out of thirty (30) consecutive Trading Days (the “Put Period”) beginning on the date the Officer’s
Certificate set forth in Section 4.13 hereof is delivered to the Administrative Agent and (ii) the Company is not in possession on the date it provides a Put Notice (as defined herein) of material non-public information that has not been
previously disclosed to Whitebox, then the Company shall have the option (the “Initial Put Option”) to require Whitebox, subject to the terms and conditions contained herein, to provide to the Company the Additional Amount (as
defined herein) in the form of: (x) an additional senior loan having terms identical to the terms set forth in the Loan Agreement (the “Additional Senior Loan”), (y) the purchase of additional Convertible Notes (the
“Put Notes”) (at a purchase price equal to the aggregate principal amount of such Put Notes) having identical terms to the Exchange Notes issued, or available for issuance, pursuant to the Exchange and in accordance with the terms
of Section 1.4 hereof, or (z) a combination thereof (allocated in a manner determined by Whitebox in its sole discretion). For the avoidance of any doubt, the manner in which the Additional Amount shall be provided to the Company, and any
allocations of such Additional Amount amongst the Purchasers, shall be at the sole discretion of Whitebox. Except as set forth below, the option granted to the Company pursuant to this Section 1.5(a) shall expire within seven (7) Business
Days following the expiration of the Put Period (the “Company Exercise Period”), and may be exercised once upon notice by the Company to each of the Administrative Agent and the Representative (a “Put Notice”), who
shall forward such Put Notice to Whitebox. Upon receipt of a Put Notice by Whitebox, Whitebox shall notify the 

  
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Administrative Agent and/or Representative, as the case may be, of the manner of its providing such Additional Amount, who in turn shall notify the Company. Notwithstanding the foregoing, the
Administrative Agent and/or Representative, as the case may be, acting at the direction of Whitebox, may assign Whitebox’s rights under this Section 1.5(a) to any Affiliate of Whitebox if such assignment is set forth in a writing delivered
by Whitebox to the Administrative Agent and/or Representative, as the case may be, and such party pays the applicable Additional Amount to the Company and executes the Purchaser Joinder Agreement attached hereto. Notwithstanding anything herein to
the contrary, if the Company does not exercise the Initial Put Option within the Company Exercise Period, then a new Put Period (the “Additional Put Period”) shall be deemed to have begun to run beginning on the thirty-first
(31) Trading Day following the beginning of the initial Put Period and ending on the sixtieth (60) Trading Day following the initial Put Period, such additional option exercise period to have the same terms and conditions, including the
same Company Exercise Period following such additional Put Period, as the Initial Put Option. For the avoidance of doubt, the Additional Put Period shall be treated as a separate and distinct period for purposes of calculating whether the Common
Stock is equal to or greater than $1.00 per share for the applicable timeframe, and no days during the initial Put Period where the Common Stock was equal to or greater than $1.00 per share shall be tacked to the Additional Put Period. For the
purpose of clarity, if the Company does not provide a Put Notice within the applicable timeframes set forth in this Section 1.5(a) or the conditions precedent to exercising such option by the Company do not occur within the applicable Put
Period, Whitebox shall have no commitment or obligation to provide the Additional Amount. Notwithstanding the foregoing, the Company shall not be entitled to exercise such option if it is in violation of the terms of the Registration Rights
Agreement and such violation remains uncured. The terms and conditions of the funding of the Additional Senior Loan shall be governed by, and shall be in accordance with, the Loan Agreement. 

(b) Notwithstanding anything herein to the contrary, the Additional Senior Loan Amount and the Put Note Amount shall not, in the aggregate,
exceed $5,181,348 (the “Maximum Additional Amount”) at any time (excluding, for purposes of this calculation, interest paid in kind). To account for the payment of the Structuring Fee, Whitebox shall be entitled to net fund the
Additional Amount. If all or a portion of the Structuring Fee is to be paid by the Company to Whitebox in cash, then the Maximum Additional Amount shall be reduced dollar for dollar to reflect such amount paid in cash. 

(c) Notwithstanding any other provision to the contrary, the Structuring Fee shall be paid in U.S. dollars and free and clear of, and without
any deduction or withholding for or on account of, any current or future taxes, levies, imposts, duties, charges or other deductions or withholdings levied in any jurisdiction from or through which payment is made, unless such deduction or
withholding is required by applicable law, in which event the Company will pay additional amounts so that the Purchaser or Lender, as applicable, will receive the amount that would otherwise have been received but for such deduction or withholding.

 (d) Notwithstanding the foregoing, the Company hereby grants an option to Whitebox to purchase up to an aggregate principal amount
of $32,000,000 additional Convertible Notes (the “Company Option Notes,” and together with the Put Notes, the “Option Notes,” and the Option Notes, collectively with the Exchange Notes, the
“Notes”), at a purchase price equal to the aggregate principal amount of such Company Option Notes purchased (the “Option 

  
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Purchase Price”), and having identical terms to the Exchange Notes issued, or available for issuance, pursuant to the Exchange and in accordance with the terms of Section 1.4
hereof, all in the manner and amount set forth in the Option Notice (as defined herein). Said option may be exercised in whole or in part, on one or more occasions, within ninety (90) days of the later of (i) the Initial Exchange Date (as
defined herein) or (ii) if applicable, the receipt of approval of the Stockholder Proposals (as set forth in Section 4.1 herein), by the Representative, acting on behalf of Whitebox, providing the Company with a written notice of such
exercise (the “Option Notice”). Notwithstanding the foregoing, the Representative, acting at the direction of Whitebox, may assign Whitebox’s right under this Section 1.5(d) to any Affiliate of Whitebox if such assignment
shall be set forth in the applicable Option Notice and such party pays the applicable Option Purchase Price to the Company and executes the Purchaser Joinder Agreement attached hereto. 

Section 1.6 Payment of Interest. Any accrued but unpaid interest (other than interest paid in kind) on the portion of the
Senior Loan so exchanged and cancelled pursuant to the terms of this Agreement from the last interest payment date to, but not including, the Exchange Date shall be paid to the Lender in cash on such Exchange Date by wire transfer to an account or
accounts designated by the Administrative Agent. Nothing in this Section 1.6 shall relieve any obligation of the Company to pay interest on any portion of the Senior Loan not exchanged and cancelled. 

ARTICLE II 
 CLOSING OF
THE EXCHANGE AND ADDITIONAL PURCHASES 
 Section 2.1 Delivery and Payment. 

(a) Delivery and payment for the Exchange Notes shall be made at the offices of Brown Rudnick LLP, One Financial Center, Boston, Massachusetts
at 10:00 AM (New York City time), on or after May         , 2014, or at such other place or on such other date or dates as the parties may mutually agree (each date and time of delivery and payment, an
“Exchange Date” and the initial Exchange Date, the “Initial Exchange Date”) (which date shall be within three (3) Business Days after issuance of an Exchange Notice by the Administrative Agent). Delivery of the
Exchange Notes shall be made against the exchange and cancellation (as set forth in Section 2.3 herein) of the same principal amount of the Senior Loan held by the Lender. 

(b) If either of the options to purchase Option Notes provided for in Sections 1.5(a) (a “Put Option Closing”) or 1.5(d) (an
“Option Closing”) hereof are exercised, either by the Company or the Purchaser, as applicable, in accordance with Section 1.5, the Company will deliver the Option Notes (at the expense of the Company) to the Purchaser at Brown
Rudnick LLP, One Financial Center, Boston, Massachusetts, on the date specified in the applicable Put Notice or Option Notice, as the case may be, (which shall be within three (3) Business Days after exercise of said put right or option) (each
date, an “Option Closing Date”) for the account of the Purchaser, against payment by the Purchaser of the Additional Amount attributable to the Put Notes or the Option Purchase Price, as applicable, to or upon the order of the
Company by wire transfer payable in same-day funds to an account specified by the Company on or before the Option Closing Date. In addition, any payment by the Purchaser of the Additional Amount attributable to the Additional Senior Loan shall be
paid to or upon the order of the Company by 

  
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wire transfer payable in same-day funds to an account specified by the Company on or before the Option Closing Date. The Company will deliver to the Purchaser on each Option Closing Date, and the
obligations of the Purchaser to purchase the Option Notes shall be conditioned upon the receipt of, supplemental opinions, certificates and letters confirming as of such date the opinions, certificates and letters delivered pursuant to
Section 2.2 hereof. 
 Section 2.2 Delivery Obligations of the Company. The rights and/or obligations of the Lender
and Purchaser hereunder to participate in the Exchange and/or purchase Option Notes, as the case may be, shall be subject to the condition that all representations and warranties and other statements of the Company Parties herein are, as of the date
hereof, accurate in all material respects (except that any representation or warranty that is qualified as to materiality or “Material Adverse Change,” or words of similar effect, shall be accurate in all respects), to the performance in
all material respects by the Company Parties of their obligations hereunder and to the following additional conditions (any of which may be waived by the Purchaser, in its sole discretion): 

(a) On the Initial Exchange Date and each Option Closing Date, the Company shall have requested and caused counsel to the Company Parties (each
such counsel to be reasonably acceptable to the Administrative Agent or Representative, as the case may be), to furnish to the Administrative Agent or the Representative, as the case may be, (a) such written opinion or opinions, in
substantially the form attached hereto as Exhibit E, and (b) such written opinion or opinions, in substantially the form delivered to the Administrative Agent by the Company’s local counsel in Minnesota on the date hereof
(provided, that such local counsel opinion, or opinions, will be revised as necessary to reflect the execution of the Indenture) each dated as of such Initial Exchange Date or Option Closing Date; 

(b) On the Initial Exchange Date and any subsequent Exchange Date, the Company shall have furnished or caused to be furnished to the
Administrative Agent, at the Initial Exchange Date and each subsequent Exchange Date, a certificate executed by the Chief Executive Officer and Chief Financial Officer of each Company Party, on behalf of such Company Party, that (i) the
representations and warranties of the Company Parties set forth in Sections 3.1(a), (b), (c), (e)(ii), (x), (y), (hh), (ii), (jj) hereof and Sections 3.1, 3.2, and 3.6 of the Pledge and Security Agreement (collectively, the “Fundamental
Representations”) are true and correct in all material respects (except that any representation or warranty that is qualified as to materiality or “Material Adverse Change,” or words of similar effect, shall be accurate in all
respects) at and as of such time (except to the extent such Fundamental Representation expressly relates to an earlier date, which such Fundamental Representation shall be true and correct in all material respects (except that any representation or
warranty that is qualified as to materiality or “Material Adverse Change,” or words of similar effect, shall be accurate in all respects) as of such earlier date), (ii) the Company Parties have performed in all material respects all
of their obligations hereunder to be performed at or prior to such time and (iii) no Default or Event of Default (as such terms are defined in the Loan Agreement and Indenture) shall have occurred and be continuing under the Loan Agreement or
the Indenture, and no event or condition exists which after giving of notice or lapse of time or both would give rise to a Default or Event of Default under the Loan Agreement or the Indenture; 

  
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 (c) On each Option Closing Date other than in connection with a Put Note Closing, the Company
shall have furnished or caused to be furnished to the Representative, at each such Option Closing Date, a certificate executed by the Chief Executive Officer and Chief Financial Officer of each Company Party, on behalf of such Company Party, that
(i) the representations and warranties of the Company Parties herein, as qualified by the applicable Updated Disclosure Schedule (as defined herein), are true and correct in all material respects (except that any representation or warranty that
is qualified as to materiality or “Material Adverse Change,” or words of similar effect, shall be accurate in all respects) at and as of such time (except to the extent such representations and warranties expressly relate to an earlier
date, which such representation and warranty shall be true and correct in all material respects (except that any representation or warranty that is qualified as to materiality or “Material Adverse Change,” or words of similar effect, shall
be accurate in all respects) as of such earlier date), (ii) the Company Parties have performed in all material respects all of their obligations hereunder to be performed at or prior to such time and (iii) no Default or Event of Default
(as such terms are defined in the Loan Agreement and Indenture) shall have occurred and be continuing under the Loan Agreement or the Indenture, and no event or condition exists which after giving of notice or lapse of time or both would give rise
to a Default or Event of Default under the Loan Agreement or the Indenture; 
 (d) On each Option Closing Date in connection with a Put Note
Closing, the Company shall have furnished or caused to be furnished to the Representative, at such Option Closing Date, a certificate executed by the Chief Executive Officer and Chief Financial Officer of each Company Party, on behalf of such
Company Party, that (i) the representations and warranties of the Company Parties herein, as qualified by the applicable Updated Disclosure Schedule, are true and correct in all material respects (except that any representation or warranty that
is qualified as to materiality or “Material Adverse Change,” or words of similar effect, shall be so true and correct in all respects) at and as of such time, except where the failure of such representations and warranties to be so true
and correct on such date would have an adverse financial impact on the Company of greater than $2,500,000 (except to the extent such representations and warranties expressly relate to an earlier date, which such representation and warranty shall be
true and correct in all material respects (except that any representation or warranty that is qualified as to materiality or “Material Adverse Change,” or words of similar effect, shall be accurate in all respects) as of such earlier
date), (ii) the Company Parties have performed in all material respects all of their obligations hereunder to be performed at or prior to such time and (iii) no Default or Event of Default (as such terms are defined in the Loan Agreement
and Indenture) shall have occurred and be continuing under the Loan Agreement or the Indenture, and no event or condition exists which after giving of notice or lapse of time or both would give rise to a Default or Event of Default under the Loan
Agreement or the Indenture; 
 (e) On the Initial Exchange Date, any subsequent Exchange Date and each Option Closing Date, the Company shall
have delivered the Note, in the form contemplated by the applicable indenture under Section 1.4 herein, executed by the Company, to the Administrative Agent or the Representative, as the case may be; 

  
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 (f) On the Initial Exchange Date, the Company shall have delivered a copy of the indenture, in
the form contemplated pursuant to Section 1.4 herein (the “Indenture”), which shall contain such information as provided in the Officer’s Certificate (as defined herein), executed by the Company and any other party to such
Indenture, to the Administrative Agent or the Representative, as the case may be; 
 (g) On the Initial Exchange Date, the Company shall have
delivered to the Administrative Agent a copy of the Pledge and Security Agreement, in substantially the form delivered to the Administrative Agent on the date hereof (provided, that such agreement will be revised as necessary to reflect the
execution of the Indenture) (the “Security Agreement”), the Intercreditor Agreement, in substantially the form attached hereto as Exhibit F (the “Intercreditor Agreement”), the Mortgage (as defined in
the Indenture), in substantially the form delivered to the Administrative Agent on the date hereof (provided, that such Mortgage will be revised as necessary to reflect the execution of the Indenture) (the “Mortgage”), and any other
documents to be executed in connection therewith or the Indenture (the Security Agreement, Intercreditor Agreement, the Mortgage and the documents to be executed in connection therewith or the Indenture, collectively the “Ancillary
Agreements”), executed by the Company and any other party to such Ancillary Agreement; 
 (h) On the Initial Exchange Date, the
Company shall have delivered to the Representative a title policy, together with all appropriate endorsements, for the Real Property located at 502 South Walnut Avenue, Luverne, Minnesota 56156 (the “Luverne Property”), together
with proof of payment of all fees and premiums for such policy and true and accurate copies of all documents listed as exceptions under such policy; 

(i) On each Exchange Date other than the Initial Exchange Date and each Option Closing Date, the Company shall have delivered to the
Representative all applicable endorsements with respect to the Title Policy for the Luverne Property which reflect any amendments to the Mortgage, increase coverage to not less than the amount secured by the Mortgage, amend the date of the Title
Policy to be the time the most recent amendment to the Mortgage was recorded and do not included any new matters affecting title to the Luverne Property; 

(j) On or before the Initial Exchange Date, the Company shall have delivered to the Representative a Phase I Report for the Luverne Property
(the “Phase I Report”) prepared by one or more qualified environmental engineering or similar inspection firms, which report or reports shall be in all respects satisfactory to the Representative in its reasonable discretion and
upon which report any collateral trustee under the Indenture and the Lenders and Purchasers are expressly entitled to rely on. The Representative hereby acknowledges that the Phase I Report has been previously delivered to it by the Company in
satisfaction of this Section 2.2(j), and no further deliverable shall be required to satisfy this condition; 
 (k) On or before the
Initial Exchange Date, a survey of the Luverne Property (and any existing improvements thereon) and surveyor’s certificate, and a municipal liens certificate or certificates evidencing payments of all real estate taxes and municipal charges on
such Luverne Property which were due and payable prior to the date hereof. The Representative hereby acknowledges that all deliverables under this Section 2.2(k) have been previously delivered to it by the Company in satisfaction of this
Section 2.2(k), and no further deliverables shall be required to satisfy this condition; 

  
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 (l) On each Exchange Date other than the Initial Exchange Date and Option Closing Date, the
Company shall have delivered to the Administrative Agent or Representative, as the case may be, (i) a copy of such amendments or modifications (or similar) to the Ancillary Agreements as may be reasonably necessary or desirable to reflect the
additional Exchanges (including, but not limited to, to amend the Mortgage and increase the amount secured thereby), each such Ancillary Agreement (or subsequent amendment or modification thereto) executed by any Company Party and any other party to
such Ancillary Agreements, and (ii) in the event that the Mortgage is amended to reflect the additional Exchanges, such written opinion or opinions of counsel to the Company Parties (such counsel to be reasonably acceptable to the
Administrative Agent or Representative, as the case may be), in substantially the form of opinion paragraphs 6, 8 and 9 delivered to the Administrative Agent by the Company’s local counsel in Minnesota on the date hereof (provided, that such
opinion, or opinions, will be revised as necessary to reflect any required amendments or modifications to the Mortgage in connection with such Exchanges), dated as of such subsequent Exchange Date; 

(m) On the Initial Exchange Date, any subsequent Exchange Date and each Option Closing Date, the Company shall be in compliance in all material
respects with all of its obligations under that certain Registration Rights Agreement, dated as of the date hereof, between the Company and the Purchaser (the “Registration Rights Agreement”) and, if a Registration Statement (as
defined in the Registration Rights Agreement) has previously been declared effective by the Securities and Exchange Commission (the “SEC”), that no Materiality Notices shall have been delivered by the Company to the holders of
Registrable Securities (as defined in the Registration Rights Agreement) and be in effect; 
 (n) On or after the date of any Exchange
Notice, any Put Notice or Option Notice, there shall not have occurred any of the following: (i) a suspension or material limitation in trading in securities generally on The New York Stock Exchange or on NASDAQ; (ii) a suspension or
material limitation in trading on the Company’s securities on the NASDAQ Global Market; (iii) a general moratorium on commercial banking activities declared by either Federal or New York State authorities or a material disruption in
commercial banking or securities settlement or clearance services in the United States; (iv) the outbreak or escalation of hostilities involving the United States or the declaration by the United States of a national emergency or war;
(v) the occurrence of any other calamity or crisis or any material change in financial, political or economic conditions in the United States or elsewhere or (vi) the occurrence of a Material Adverse Change that has occurred and is
continuing, if the effect of any such event specified in clauses (iv), (v) or (vi), in the judgment of the Administrative Agent or Representative, as the case may be, makes it impracticable or inadvisable to proceed with the transactions
contemplated hereby or the delivery of the Notes being delivered at such time of delivery on the terms and manner contemplated hereby; 
 (o)
On the Initial Exchange Date or any Option Closing Date in connection with a Put Note Closing, since the date of this Agreement, no event or circumstances that would reasonably be expected to cause a Material Adverse Change shall have occurred and
be continuing; 
 (p) On the Initial Exchange Date, any subsequent Exchange Date and each Option Closing Date, any actions for the shares of
the Common Stock issuable upon the conversion of the Notes to be duly listed for quotation on the NASDAQ Global Market shall have been taken, and reasonably satisfactory evidence of such actions shall have been provided; 

  
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 (q) On each Option Closing Date, the Company shall have delivered to the Administrative Agent or
Representative, as the case may be, Updated Disclosure Schedules, updated as of such Option Closing Date, as the case may be, which shall be, other than in the case of a Put Option Closing, satisfactory to the Administrative Agent or Representative,
as the case may be, in their sole discretion; and 
 (r) Such other customary information, certificates (including, but not limited to, good
standing certificates, secretary certificates and other officer certificates) and documents relating to any Company Party as the Administrative Agent or Representative, as the case may be, may reasonably request. 

Section 2.3 Cancellation of the Senior Loan. Subject to the terms and conditions of the Loan Agreement, upon the
consummation of an Exchange, any portion of the Senior Loan so exchanged shall be deemed fully paid, terminated, cancelled and discharged in full. The balance of the outstanding Senior Loan (if any), after giving effect to any Exchange, shall remain
outstanding. Upon the consummation of an Exchange, the Administrative Agent shall remit Reserve Funds (as defined in the Loan Agreement), in an amount equal to ten percent (10%) of the principal amount of such Exchange, to the Trustee (as
defined in the Indenture) to be held as Reserve Funds (as defined in the Indenture) in accordance with Section 4.01 of the Indenture. Nothing herein shall relieve the Company or any subsidiaries of the Company from any obligations under the
Loan Agreement that survive the cancellation and discharge of the Senior Loan or any portion thereof. 
 ARTICLE III 

REPRESENTATIONS AND WARRANTIES 

Section 3.1 Representations and Warranties of the Company Parties. Each of the Company Parties, jointly and severally,
represents and warrants to, and agrees with, each Lender and Purchaser as set forth below in this Article III, subject to the exceptions disclosed in writing in the Company Party Disclosure Schedules as of the date hereof, each of which is being
relied upon by such Purchaser or Lender, as the case may be, as a material inducement to enter into and perform this Agreement. All of the disclosure schedules referenced below and thereby required of the Company Parties pursuant to this Agreement,
which disclosure schedules shall be cross-referenced to the specific sections and subsections of this Agreement and delivered pursuant to Section 4.12, are referred to herein as the “Company Party Disclosure Schedules.” 

(a) Each Company Party is an entity of the type identified on Section 3.1(a) of the Company Party Disclosure Schedules, duly organized,
validly existing and in good standing under the laws of its state of organization identified on Section 3.1(a) of the Company Party Disclosure Schedules. Each Company Party is in good standing and qualified to do business in each other
jurisdiction where its ownership or lease of property or conduct of its business requires such qualification, except where the failure to be in good standing could not reasonably be expected to result in a Material Adverse Change. No Company Party
has any Subsidiaries other than those identified in Section 3.1(a) of the Company Party Disclosure Schedules and there are no Excluded Subsidiaries. 

  
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 (b) The execution, delivery, and performance by each Company Party of this Agreement, the
Indenture, the Registration Rights Agreement, any Notes, and the Ancillary Documents (collectively, the “Equity Documents”) to which it is a party and the consummation of the transactions contemplated hereby and thereby (i) are
within such Company Party’s governing powers, (ii) have been duly authorized by all necessary governing action, (iii) do not contravene (A) such Company Party’s Organizational Documents or (B) any material provision of
any law or any contractual restriction binding on or affecting such Company Party, and (iv) will not result in or require the creation or imposition of any Lien prohibited by the Loan Agreement. Each Company Party has all requisite power and
authority to carry on its business as now conducted and proposed to be conducted and to own and leases its property. 
 (c) No consent,
order, authorization, or approval or other action by, and no notice to or filing with, any Governmental Authority or any other Person is required for the due execution, delivery, and performance by any Company Party of the Equity Documents to which
such Company Party is a party or the consummation of the transactions contemplated hereby and thereby, except for (i) the filing of UCC-1 financing statements and Mortgages (as defined in the Loan Agreement) in the state and county filing
offices, (ii) those consents and approvals that have been obtained or made on or prior to the date hereof and that are in full force and effect, (iii) the filing of a Current Report on Form 8-K (a “Form 8-K”) with the SEC,
(iv) the requisite stockholder approval of the Stockholder Proposals (as defined herein), (v) the filing of an additional listing application with the Nasdaq Stock Market LLC and (vi) other filings and recordings with respect to the
Collateral to be made by, or otherwise delivered to Administrative Agent by the date hereof, for filing or recordation (including, with respect to Intellectual Property, the filing of security agreements with the United States Patent and Trademark
Office or the United States Copyright Office (solely to the extent perfection could be achieved by such filings)). The execution, delivery, and performance by each Company Party of the Equity Documents to which it is a party and the consummation of
the transactions contemplated hereby and thereby will not violate or result in a default or require any consent or approval under any indenture, agreement, Organizational Document or other instrument biding upon the applicable Company Party or its
property, or give rise to a right thereunder to require any payment to be made by such Company Party, except for violations, defaults or the creation of such rights that could not reasonably be expected to result in a Material Adverse Change. 

(d) Reserved 
 (e) 

(i) All financial statements of any Company Party or Subsidiary delivered to Administrative Agent, Representative or any Lender or Purchaser by
or on behalf of any Company Party or Subsidiary in connection with or pursuant to this Agreement, the Loan Agreement or any other Ancillary Document or document in connection with the transactions contemplated hereby or thereby, including any pro
forma balance sheets of the Company Parties delivered on the date hereof have been prepared in accordance with GAAP (except, in the case of unaudited financial statements, for the lack of footnotes and being subject to year-end audit

  
 11 

 
adjustments) and fairly present in all material respects the financial positions and results of operations of the applicable Company Party or Subsidiary covered thereby as of the dates and for
the periods indicated therein. All projections delivered from time to time to Administrative Agent, Representative or any Lender or Purchaser, as applicable, have been prepared on the basis of assumptions that the Company believes are fair and
reasonable as of the date of preparation in light of current and reasonably foreseeable business conditions (it being understood that such projections are subject to significant uncertainties and contingencies, many of which are beyond the control
of the Company Parties, and no assurances can be given that such projections will be realized, and are not to be viewed as facts, and that actual results during the period or periods covered by the projections may differ materially from such
projections). 
 (ii) Since December 31, 2013, no event or circumstance that could reasonably be expected to cause a Material Adverse
Change has occurred that has not been previously disclosed in the SEC Reports. 
 (f) All factual information taken as a whole (other than
forward looking information, projections, estimates, projections and pro forma financial information) heretofore or contemporaneously furnished by or on behalf of any Company Party in writing to any Representative , Administrative Agent, Lender or
Purchaser for purposes of or in connection with the Equity Documents or any transaction contemplated hereby or thereby is, and all other such factual information hereafter furnished by or on behalf of any Company Party in writing to Representative ,
Administrative Agent, Lender or Purchaser was or shall be, true and accurate in all material respects on the date as of which such information was or is dated or certified and did not or does not contain any untrue statement of a material fact or
omit to state any material fact necessary to make the statements contained therein not (taken as a whole) misleading at such time in light of the circumstances in which such information was given. All forward looking information, projections,
estimates, and pro forma financial information furnished by any Company Party were prepared on the basis of assumptions, data, information, tests, or conditions believed to be reasonable at the time such projections, estimates, and pro forma
financial information were furnished. 
 (g) 

(i) There is no pending or, to the Knowledge of any Company Party, threatened action or proceeding against any Company Party before any court,
Governmental Authority or arbitrator which could reasonably be expected to cause a Material Adverse Change other than as set forth in Section 3.1(g)(i) of the Company Party Disclosure Schedules or which purports to affect the legality,
validity, binding effect or enforceability of the Equity Documents. There is no pending or, to the Knowledge of any Company Party, threatened action or proceeding instituted against any Company Party, or any of its Subsidiaries which seeks to
adjudicate any Company Party, or any of its Subsidiaries as bankrupt or insolvent, or seeking liquidation, winding up, reorganization, arrangement, adjustment, protection, relief, or composition of it or its debts under any Debtor Relief Law, or
seeking the entry of an order for relief or the appointment of a receiver, trustee or other similar official for it or for any substantial part of its property. 

  
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 (ii) Except as it concerns any environmental, health, or safety matter, which is covered by
Section 3.1(m) herein, each Company Party has complied with all Legal Requirements of any Governmental Authority having jurisdiction over the conduct of its respective businesses or the ownership of its respective property, in each case, except
as would not reasonably be expected to result in a Material Adverse Change. 
 (h) Reserved. 

(i) All material Returns required to be filed by or on behalf of any Company Party or any member of the Controlled Group (hereafter
collectively called the “Tax Group”) have been duly filed on a timely basis or appropriate extensions have been obtained and such Returns are and will be true, complete and correct, except where the failure to so file would not be
reasonably expected to cause a Material Adverse Change; and all Taxes shown to be payable on the Returns or on subsequent assessments with respect thereto will have been paid in full on a timely basis, and no other Taxes will be payable by the Tax
Group with respect to items or periods covered by such Returns, except in each case to the extent of (i) reserves reflected in the Financial Statements, or (ii) Taxes that are being contested in good faith. 

(j) No Company Party nor any member of the Controlled Group is a party to, or has incurred any obligation or liability under, any Plan or
Multiemployer Plan. 
 (k) 
 (i)
Each Company Party has good title to, or valid leasehold interest in, all of its material Properties, free and clear of all Liens except for Permitted Liens. The material Properties used or to be used in the continuing operations of each Company
Party are in good repair, working order and condition, ordinary wear, tear, casualty, condemnation and Permitted Dispositions excepted (except where failure to so maintain, preserve, repair, renew or replace such assets would not reasonably be
expected to result in a Material Adverse Change). Neither the business nor the material Properties of the Company Parties, taken as a whole, has been materially and adversely affected as a result of any fire, explosion, earthquake, flood, drought,
windstorm, accident, strike or other labor disturbance, embargo, requisition or taking of Property or cancellation of contracts, Permits, or concessions by a Governmental Authority, riot, activities of armed forces, or acts of God or of any public
enemy. 
 (ii) Section 3.1(k)(ii) of the Company Party Disclosure Schedules contains a true and complete list of each interest in
(A) Real Property (1) owned by each Company Party and describes the type of interest therein held by such Company Party and (2) leased or subleased by any Company Party, as lessee or sublessee and describes the type of interest
therein held by such Company Party and (B) any material Property (1) owned by any Company Party and describes the type of interest therein held by such Company Party and (2) leased or subleased by any Company Party, as lessee or
sublessee and describes the type of interest therein held by such Company Party. 
 (iii) No Company Party has received any notice of, nor
has any knowledge of, the occurrence or pendency or contemplation of any Casualty Event currently affecting all or any material portion of its Property. 

  
 13 

 (iv) Each Company Party owns or has rights to use all of the material assets that are necessary
for the operation of its business as currently conducted. The use by each Company Party of such Collateral and all such rights with respect to the foregoing does not infringe on the rights of any person other than such infringement
(A) described on Section 3.1(k)(iv) of the Company Party Disclosure Schedules and (B) which could not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Change. No claim has been made and remains
outstanding that any Company Party’s use of any Collateral does or may violate the rights of any third party other than claims described on Section 3.1(k)(iv) of the Company Party Disclosure Schedules or other claims that could not,
individually or in the aggregate, reasonably be expected to result in a Material Adverse Change. 
 (l) 

(i) Other than those identified on Section 3.1(l) of the Company Party Disclosure Schedules, no Company Party is a party to any indenture,
loan, or credit agreement or any lease or other agreement or instrument, the breach of which, or subject to any charter or corporate restriction, the breach of which, or provision of applicable law or governmental regulation, the compliance with
which, in each case, could reasonably be expected to cause a Material Adverse Change. No Company Party is in default under or with respect to any contract, agreement, lease, or other instrument to which such Company Party is a party other than those
defaults, individually or in the aggregate, that could not reasonably be expected to cause a Material Adverse Change. No Company Party has received any notice of default under any Material Contract to which such Company Party is a party a copy of
which has not been delivered to the Administrative Agent or Representative. 
 (ii) No Default has occurred and is continuing. 

(m) 
 (i) Except as could not
reasonably be expected to cause a Material Adverse Change, each Company Party and each Subsidiary of any Company Party (A) has obtained all Environmental Permits necessary for the ownership and operation of its respective Properties and the
conduct of its respective businesses; (B) has at all times been and is in material compliance with all terms and conditions of such Permits and with all other material requirements of applicable Environmental Laws; (C) has not received
notice of any material violation or alleged violation of any Environmental Law or Permit; and (D) is not subject to any actual, pending or to any Company Party’s Knowledge, threatened Environmental Claim. 

(ii) To each Company Party’s Knowledge, none of the present or previously owned or operated Property of any Company Party or of any of its
current or former Subsidiaries, wherever located, (A) has been placed on or proposed to be placed on the National Priorities List, or its state or local analogs, or have been otherwise investigated, designated, listed, or identified as a
potential site by any Governmental Authority for a Response that could reasonably be expected to cause a Material Adverse Change; (B) is subject to a Lien, arising under or in connection with any Environmental Laws, that attaches to any
revenues or to any Property owned, leased or operated by any Company Party or any of its Subsidiaries, wherever located, which could reasonably be expected to cause a Material Adverse Change; or (C) has

  
 14 

 
been the site of any Release of Hazardous Substances from present or past operations which has caused at the site or at any third party site any condition that has resulted in or could reasonably
be expected to result in the need for Response that would cause a Material Adverse Change. 
 (iii) Without limiting the foregoing, in the
course of carrying out any Response as to any of their presently or formerly owned, leased or operated Property, Company Parties, along with each of their Subsidiaries, are in material compliance with all obligations imposed by any Governmental
Authority as to such Response. In addition, there are no facts, circumstances, conditions or occurrences with respect to any Property owned, leased or operated by any Company Party or any of its Subsidiaries that could reasonably be expected to form
the basis of an Environmental Claim under Environmental Laws that could reasonably be expected to result in a Material Adverse Change. 
 (n)

 (i) Other than as set forth on Schedule 3.1(n) of the Company Party Disclosure Schedules, (i) the Company Parties possess all
authorizations, Permits, licenses, patents, patent rights or licenses, trademarks, trademark rights, trade names rights, copyrights and other Intellectual Property which are necessary to the conduct of their business (provided that the forgoing is
not and shall not be deemed to be a representation or warranty of any kind with respect to infringement of Intellectual Property rights of any person) other than as would not reasonably be expected to result in a Material Adverse Change and (ii)the
Company Parties manage and operate their business in all material respects in accordance with all applicable Legal Requirements and prudent industry practices other than as would not reasonably be expected to result in a Material Adverse Change.

 (ii) Other than as would not reasonably be expected to result in a Material Adverse Change, no written claim has been asserted and is
pending by any person challenging or questioning the use of any such Intellectual Property or the validity or effectiveness of any such Intellectual Property owned by or licensed to a Company Party, other than as set forth on Schedule 3.1(n)(ii) of
the Company Party Disclosure Schedules. The use of such Intellectual Property by any Company Party does not infringe the rights of any person, except (i) as described on Schedule 3.1(n) of the Company Party Disclosure Schedules and
(ii) except for such claims and infringements that, individually or in the aggregate, would not reasonably be expected to result in a Material Adverse Change. 

(iii) Except pursuant to licenses and other user agreements entered into by any Company in the ordinary course of business or as described on
Schedule 3.1(n)(iii) of the Company Party Disclosure Schedules, (A) each Company Party has done nothing to authorize or enable any other person to use, any Copyright, Patent or Trademark (as such terms are defined in the Pledge and Security
Agreement) in a manner that will materially impair any Company Party’s ability to conduct its business as currently conducted and (B) all of the Company Parties’ copyright registrations, patent registrations and trademark
registrations are in full force and effect and, to each Company Party’s knowledge, valid. 

  
 15 

 (iv) Except for such violations that, individually or in the aggregate, could not reasonably be
expected to result in a Material Adverse Change, to each Company Party’s knowledge, there is no violation by others of any right of such Company Party with respect to its copyright, patent or trademark except as may be set forth on Schedule
3.1(n)(iv) of the Company Party Disclosure Schedules. 
 (o) None of the Property of any Company Party is subject to any Lien other than
Permitted Liens. On the date of this Agreement, after giving effect to (i) the filing of UCC-1 financing statements and Mortgages (as defined in the Loan Agreement) in the state and county filing offices, and (ii) other filings and
recordings with respect to the Collateral to be made by, or otherwise delivered to Administrative Agent by the date hereof, for filing or recordation (including, with respect to Intellectual Property, the filing of security agreements with the
United States Patent and Trademark Office or the United States Copyright Office (solely to the extent perfection could be achieved by such filings)), all governmental actions and all other filings, recordings, registrations, third party consents and
other actions which are necessary to create and perfect the Liens provided for in the Security Instruments will have been made, obtained and taken in all relevant jurisdictions other than as permitted pursuant to the Security Instruments. Except to
the extent such could not reasonably be expected to cause a Material Adverse Change, all leases and agreements for the conduct of business of each Company Party are valid and subsisting, in full force and effect and there exists no default or event
of default or circumstance which with the giving of notice or lapse of time or both would give rise to a default by any Company Party, or to any Company Party’s Knowledge, by any of the other parties thereto, under any such leases or
agreements. No Company Party is subject to any order, judgment, writ or decree, that either restricts or purports to restrict its ability to grant Liens to secure the Obligations against its respective Properties. 

(p) After giving effect to (i) the Senior Loan, (ii) the consummation of the transactions contemplated by the Loan Agreement and the
Equity Documents and (iii) the payment and accrual of all transaction costs in connection with the foregoing, the Company Parties and their Subsidiaries, taken as a whole, are Solvent. 

(q) Section 3.1(q) of the Company Party Disclosure Schedules sets forth a true and complete list of all Hedge Contracts of each Company
Party, the material terms thereof (including the type, term, effective date, termination date and notional amounts or volumes), all credit support agreements relating thereto (including any margin required or supplied), and the counterparty to each
such agreement. 
 (r) Section 3.1(r) of the Company Party Disclosure Schedule sets forth a complete and correct list of all Material
Contracts (other than the agreements set forth in Section 3.1(q) of the Company Party Disclosure Schedules), providing for, evidencing, securing or otherwise relating to any debt of any Company Party, the breach, cancelation, nonperformance,
termination or non-renewal of which would reasonably be expected to cause a Material Adverse Change. 
 (s) 

(i) Section 3.1(s)(i) of the Company Party Disclosure Schedules sets forth a list of (A) all of the Subsidiaries of the Company or
any other Company Party and their jurisdiction of organization and (B) all of the joint ventures of the Company and any other Company Party. 

  
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 (ii) An accurate organization chart, showing the ownership structure of the Company, the Company
Parties and each of their Subsidiaries as of the date hereof is set forth on Section 3.1(s)(ii) of the Company Party Disclosure Schedules. 

(t) Except as would not be reasonably be expected to result in a Material Adverse Change, there are no strikes, lockouts or slowdowns against
any Company Party pending or, to the knowledge of any Company Party, threatened. The hours worked by and payments made to employees of any Company Party have not been in violation of the Fair Labor Standards Act of 1938, as amended, or any other
applicable federal, state, local or foreign law dealing with such matters in any manner which could reasonably be expected to result in a Material Adverse Change. All payments due from any Company Party, or for which any claim may be made against
any Company Party, on account of wages and employee health and welfare insurance and other benefits, have been paid or accrued as a liability on the books of such Company Party except where the failure to do so could not reasonably be expected to
result in a Material Adverse Change. The consummation of the transactions contemplated by the Equity Documents will not give rise to any right of termination or right of renegotiation on the part of any union under any collective bargaining
agreement to which any Company Party is bound where such termination or right of renegotiation could reasonably be expected to result in a Material Adverse Change. 

(u) The Company Parties have delivered to the Representative a true, complete and correct summary description of all insurance maintained by
each Company Party as of the date hereof. All insurance maintained by the Company Parties is in full force and effect, all premiums have been duly paid and no Company Party has received notice of violation or cancellation thereof, except in such
case, where the failure to do so could not reasonably be expected to be a Material Adverse Change. Each Company Party carries insurance required under Section 5.2 of the Loan Agreement. 

(v) No Company Party is, or will be after the consummation of the transactions contemplated by the Loan Agreement and/or the Equity Documents
and the application of the proceeds of the Senior Loans, by reason of being a “national” of a “designated foreign country” or a “specially designated national” within the meaning of the Regulations of the Office of
Foreign Assets Control, United States Treasury Department (31 C.F.R., Subtitle B, Chapter V), or for any other reason, in violation in any material respect of, any United States Federal statute or Presidential executive order concerning trade or
other relations with any foreign country or any citizen or national thereof or the ownership or operation of any property. 
 (w) 

(i) No Company Party and, to the Knowledge of the Company Parties, none of its Affiliates is in violation of any Anti-Terrorism Laws. 

(ii) No Company Party and to the Knowledge of the Company Parties, no Affiliates or broker or other agent of any Company Party acting or
benefiting in any capacity in connection with the Notes are any of the following: 

  
 17 

 (A) a person that is listed in the annex to, or is otherwise subject to the provisions of, the
Executive Orders; 
 (B) a person owned or controlled by, or acting for or on behalf of, any person that is listed in the annex to, or is
otherwise subject to the provisions of, the Executive Orders; 
 (C) a person with which any Purchaser is prohibited from dealing or
otherwise engaging in any transaction by any Anti-Terrorism Law 
 (D) a person that commits, threatens or conspires to commit or supports
“terrorism” as defined in the Executive Orders; or 
 (E) a person that is named as a “specially designated national and
blocked person” on the most current list published by OFAC at its official website or any replacement website or other replacement official publication of such list. 

(iii) No Company Party and, to the Knowledge of the Company Parties, no broker or other agent of any Company Party acting in any capacity in
connection with the Notes (A) conducts any business or engages in making or receiving any contribution of funds, goods or services to or for the benefit of any person described in paragraph (ii) above, (B) deals in, or otherwise
engages in any transaction relating to, any property or interests in property blocked pursuant to the Executive Orders, or (C) engages in or conspires to engage in any transaction that evades or avoids, or has the purpose of evading or
avoiding, or attempts to violate, any of the prohibitions set forth in any Anti-Terrorism Law. 
 (x) The Company has filed all reports
required to be filed by it under the Securities Act of 1933, as amended (the “Securities Act”) and the Exchange Act of 1934, as amended (the “Exchange Act”), including pursuant to Section 13(a) or
Section 15(d) thereof (the foregoing materials, as such materials may have been amended since the date of their filing, being collectively referred to herein as the “SEC Reports”), on a timely basis or has timely filed a valid
extension of such time of filing and has filed any such SEC Reports prior to the expiration of any such extension. As of their respective dates or, if amended or restated, as of the date of the last such amendment or restatement, the SEC
Reports complied in all material respects with, to the extent in effect at the time of filing, the applicable requirements of the Securities Act and the Exchange Act, as the case may be, and the rules and regulations of the SEC promulgated
thereunder, and none of the SEC Reports, when filed, contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary in order to make the statements therein, in light of the
circumstances under which they were made, not misleading except to the extent updated, amended, restated or corrected by a subsequent SEC Report. The financial statements and schedules of the Company and its consolidated Subsidiaries included
in the SEC Reports comply in all material respects with the applicable accounting requirements of Regulation S-X and have been prepared in conformity with GAAP applied on a consistent basis throughout the periods involved (except as otherwise noted
therein).

  
 18 

 (y) The Company has established and maintains and evaluates “disclosure controls and
procedures” (as such term is defined in Rules 13a-15 and 15d-15 under the Exchange Act) and “internal control over financial reporting” (as such term is defined in Rules 13a-15 and 15d-15 under the Exchange Act) as required by Rule
13a-15 under the Exchange Act; such disclosure controls and procedures are designed to provide reasonable assurance that material information required to be disclosed by the Company in the reports it files or submits under the Exchange Act, is made
known to the Company’s Chief Executive Officer and its Chief Financial Officer by others within the Company and its consolidated Subsidiaries, and such disclosure controls and procedures are effective to perform the functions for which they
were established; in connection with the preparation of the Company’s most recent consolidated financial statements, the Company’s independent registered public accountants and the audit committee of the Board of Directors of the Company
have been advised of all fraud, if any, whether or not material, that involves management or other employees who have a significant role in the Company’s internal control over financial reporting; all “significant deficiencies” and
“material weaknesses” (as such terms are defined in Rule 1-02(a)(4) of Regulation S-X under the Act) of the Company, if any, have been identified to the Company’s independent registered public accountants and are disclosed to the
Purchasers; since the date of the most recent evaluation of such disclosure controls and procedures and internal controls over financial reporting, there have been no significant changes in internal control over financial reporting or in other
factors that are reasonably likely to materially affect internal control over financial reporting, including any corrective actions with regard to significant deficiencies and material weaknesses; the principal executive officers (or their
equivalents) and principal financial officers (or their equivalents) of the Company have made all certifications required by the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act”) and any related rules and regulations promulgated
by the SEC, and the statements contained in each such certification are complete and correct; and the Company, its Subsidiaries and the Company’s directors and officers are each in compliance in all material respects with all applicable
effective provisions of the Sarbanes-Oxley Act and the rules and regulations of the SEC and NASDAQ promulgated thereunder. 
 (z) As of the
date hereof, all utility services necessary and sufficient for the operation of Company Parties’ Real Property owned in fee are presently, and will at all times be, available to the boundaries of such Real Property through dedicated public
rights of way or through perpetual private easements, approved by the Requisite Lenders under the Loan Agreement, with respect to which the Mortgage creates a valid and enforceable first lien (subject to Permitted Liens). 

(aa) There is unrestricted access for the passage of motor vehicles to and from the Company Parties’ Real Property owned in fee to and
from the public road upon which the such Property fronts and all required curb cut or access permits (if any) have been obtained. 
 (bb) The
Company Parties’ Real Property has not been the subject of any Taking except where such Taking could not reasonably be expected to cause a Material Adverse Change, and to the Knowledge of the Company, no Taking is pending, in each case, other
than as set forth on Section 3.1(bb) of the Company Party Disclosure Schedule or such other Takings that could not reasonably be expected to cause a Material Adverse Change. 

  
 19 

 (cc) No Real Property Approvals will terminate, or become void or voidable or terminable, upon
any sale, transfer or other disposition of the Company Parties’ Real Property, including any transfer pursuant to foreclosure sale under the Mortgage. 

(dd) Each of the leases set forth on Schedule 3.1(dd) of the Company Party Disclosure Schedules (the “Existing Leases”) is in
full force and there are no other leases or occupancy agreements in regards to the Real Property owned by the Company Parties. The Company has received no notices of, and has no knowledge of, any material breach or material default under any of the
Existing Leases. 
 (ee) None of the Company, its Affiliates or any Person acting on its or their behalf (other than the Purchaser) has,
directly or indirectly, made offers or sales of any security, or solicited offers to buy, any security under circumstances that would require the registration of the Notes under the Securities Act. 

(ff) None of the Company, its Affiliates or any Person acting on its or their behalf (other than the Purchaser) has: (i) engaged in any
form of general solicitation or general advertising (within the meaning of Regulation D) in connection with any offer or sale of the Notes or (ii) engaged in any directed selling efforts (within the meaning of Regulation S) with respect to the
Notes. 
 (gg) Neither the Company nor any of its subsidiaries is, and after giving effect to the offering and sale of the Notes and the
application of the proceeds thereof will be, an “investment company” as defined in the Investment Company Act of 1940, as amended. 

(hh) The Company has not paid or agreed to pay to any Person any compensation for soliciting another to purchase the Notes or to provide any
loans to the Company under the Loan Agreement (except as contemplated in the Loan Agreement) and no Company Party is a party to any contract or agreement with any Person (other than this Agreement) that would give rise to a valid claim against
Whitebox, the Lenders or the Purchasers for a brokerage commission, finder’s fee or like payment in connection with the transactions contemplated by this Agreement. 

(ii) The Notes have been duly authorized for issuance and sale pursuant to this Agreement and, when issued and delivered by the Company
pursuant to this Agreement, will be duly and validly issued, fully paid and nonassessable. The shares of Common Stock issuable upon conversion of the Notes (taking into account the limitations set forth in Section 7.01(e) of the Indenture and
without giving effect to the issuance of Common Stock in satisfaction of any make-whole payments that may become due under the Notes) have been duly authorized and reserved for issuance pursuant to the terms of the Notes, and when issued by the
Company upon a valid conversion of the Notes will be duly and validly issued, fully paid and nonassessable. 
 (jj) The Equity Documents and
the transactions contemplated hereby and thereby, including the issuance of the Notes, have each been duly and validly authorized by each of the Company Parties who are parties thereto, and, assuming due authorization, execution and delivery thereof
by each of the other parties thereto, where applicable, will constitute a legal, valid and binding agreement enforceable against the Company Parties in accordance with their terms (subject, as to the enforcement of remedies, to applicable
bankruptcy, reorganization, insolvency, moratorium or other laws affecting creditors’ rights generally from time to time in effect and to general principles of equity). 

  
 20 

 (kk) The authorized capital stock of the Company consists of 150,000,000 shares of Common Stock
and 10,000,000 shares of preferred stock, par value $0.01 per share (the “Preferred Stock”). As of May 8, 2014, there are (i) 68,858,219 shares of Common Stock issued and outstanding, (ii) no shares of Preferred Stock
issued and outstanding, (iii) no shares of Common Stock held in the Company’s treasury, (iv) warrants issued and outstanding to purchase 22,563,748 shares of Common Stock and (v) 3,741,150 shares of Common Stock reserved for
issuance upon exercise of outstanding stock options or otherwise (excluding any shares of Common Stock into which the Company’s 7.50% Convertible Senior Notes due 2022 (the “2022 Notes”) are convertible and any shares issuable
under the Company’s equity incentive plans, employee stock purchase plan or other employee compensation plans as such plans are in existence on the date hereof ). As of May 8, 2014, an aggregate principal amount of $26,900,000 of the
Company’s 2022 Notes are outstanding, which are convertible into approximately 4,725,514 shares of Common Stock as of such date (without giving effect to the issuance of Common Stock in satisfaction of any make-whole payments that may become
due under the 2022 Notes). All of the issued and outstanding shares of capital stock of the Company have been duly authorized and validly issued and are fully paid and non-assessable, have been issued in compliance with all applicable securities
laws and were not issued in violation of any preemptive right, resale right, right of first refusal or similar right. All of the Company’s options, warrants and other rights to purchase or exchange any securities for shares of the
Company’s capital stock have been duly authorized and validly issued and have been issued in compliance with all applicable securities laws. All outstanding shares of capital stock (or corresponding equity interests) of the Subsidiaries are
owned by the Company either directly or through wholly owned Subsidiaries free and clear of any perfected security interest or any other security interests, claims, liens or encumbrances, except pursuant to the terms of the Company’s existing
secured indebtedness and as disclosed in the SEC Reports. The Common Stock is registered pursuant to Section 12(b) of the Exchange Act and is listed on the NASDAQ Global Market, and the Company has taken no action designed to, or likely to have
the effect of, terminating the registration of the Common Stock under the Exchange Act or delisting the Common Stock from the NASDAQ Global Market, nor has the Company received any notification that the Commission or the NASDAQ Global Market is
contemplating terminating such registration or listing. 
 (ll) Except as set forth in Section 3.1(k)(k) of this Agreement and
Section 3.1(ll) of the Company Party Disclosure Schedule, no Person has the right, contractual or otherwise, to cause the Company to issue or sell to it any shares of Common Stock or shares of any other capital stock or other equity interests
in the Company. No Person has any preemptive rights, resale rights, rights of first refusal or other rights to purchase from the Company any shares of Common Stock or shares of any other capital stock of or other equity interests in the Company.
Except as set forth in Section 3.1(ll) of the Company Party Disclosure Schedule, no Person has the right, contractual or otherwise, to cause the Company to register under the Securities Act any shares of Common Stock or shares of any other
capital stock of or other equity interests in the Company, or to include any such shares or interests in a registration statement or the offering contemplated thereby. 

  
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 (mm) The Company maintains a system of internal accounting controls sufficient to provide
reasonable assurance that (i) transactions are executed in accordance with management’s general or specific authorization; (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with
generally accepted accounting principles or any other criteria applicable to such statements and to maintain accountability for assets; (iii) access to assets is permitted only in accordance with management’s general or specific
authorization; and (iv) the recorded accountability for assets is compared with existing assets at reasonable intervals and appropriate action is taken with respect to any differences. 

(nn) None of the Company Parties has taken, directly or indirectly, any action designed to or that would constitute or that would reasonably be
expected to cause or result in, under the Exchange Act or otherwise, stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Notes. 

(oo) Except as set forth in Section 3.1(oo) of the Company Party Disclosure Schedule, the issuance of the Notes as contemplated hereby (or
the subsequent conversion of the Notes in accordance with their terms) will not cause any holder of any shares of capital stock, securities convertible into or exchangeable or exercisable for capital stock or options, warrants or other rights to
purchase capital stock or any other securities of the Company (each, an “Additional Company Security”) to have any right to acquire any additional shares of capital stock of the Company. Except as set forth in Section 3.1(oo)
of the Company Party Disclosure Schedule, the issuance of the Notes as contemplated hereby (or the subsequent conversion of the Notes in accordance with their terms) will not affect the exercise or conversion price of any Additional Company
Security. 
 (pp) The Company meets the requirements for use of a Registration Statement on Form S-3 for the registration of any securities
issuable pursuant to the terms of this Agreement. 
 Section 3.2 Representations and Warranties of the Purchaser. Each
Purchaser represents and warrants to and agrees with the Company that: 
 (a) Such Purchaser is acquiring the Notes for investment purposes,
for its own account, and not with an intent to sell or distribute such securities except in compliance with applicable United States federal and state securities laws. Such Purchaser understands and acknowledges that the Notes it is purchasing are
characterized as “restricted securities” under the federal securities laws inasmuch as they are being acquired from the Company in a transaction not involving a public offering. Such Purchaser has been advised and understands and
acknowledges that the issuance and sale of the securities have not been registered under the Securities Act or under the “blue sky” laws of any jurisdiction and may be resold only if registered pursuant to the provisions of the Securities
Act (or if eligible, sold pursuant to the provisions of Rule 144 promulgated under the Securities Act or pursuant to another available exemption from the registration requirements of the Securities Act or in a transaction not subject thereto). 

(b) Such Purchaser is an “accredited investor” (as defined in Section 501(a) of Regulation D) and has knowledge and experience
in financial and business matters such that it is capable of evaluating the merits and risks of the purchase of the Notes. 

  
 22 

 (c) Such Purchaser has been furnished with all materials relating to the business, finances and
operations of the Company and relating to the offer and sale of the Notes that have been requested by such Purchaser. Such Purchaser understands and acknowledges that its purchase of the securities involves a high degree of risk and uncertainty.
Such Purchaser has sought such accounting, legal and tax advice as it has considered necessary to make an informed investment decision with respect to its purchase of the Notes. 

(d) Such Purchaser understands and acknowledges that the Notes are being offered and sold in reliance on a transactional exemption from the
registration requirements of federal and state securities laws, and that the Company is relying upon the truth and accuracy of the representations, warranties, agreements, acknowledgments and understandings of such Purchaser set forth in this
Agreement (i) in concluding that the offer and sale of the Notes is a “private offering” and, as such, is exempt from the registration requirements of the Securities Act, and (ii) to determine the applicability of such exemptions
in evaluating the suitability of such Purchaser to purchase the Notes. 
 (e) Such Purchaser acknowledges that neither the Notes nor any
securities issued upon the exercise or conversion of such Notes, nor any interest in either, may be sold, assigned, pledged, hypothecated, encumbered or in any other manner transferred or disposed of, in whole or in part, except in compliance with
applicable United States federal and state securities laws and the terms and conditions of this Agreement. The provisions of this Section 3.2 shall be binding upon all subsequent holders of the Notes, if any. The Notes or other securities
issued upon the exercise or conversion of such Notes shall be subject to a stop transfer order and the certificate or certificates evidencing any such shares shall bear the following legend, in addition to any other legends as may be required by the
Indenture under which the Notes are issued: 
 (i) THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
“SECURITIES ACT”), AND MAY NOT BE OFFERED, SOLD, TRANSFERRED, OR OTHERWISE DISPOSED OF UNLESS (A) IT HAS BEEN REGISTERED UNDER THE SECURITIES ACT OR (B) AN EXEMPTION FROM REGISTRATION IS AVAILABLE OR IN A TRANSACTION NOT SUBJECT
THERETO (AND, IN EACH SUCH CASE, THE TRANSFEROR DELIVERS AN OPINION OF COUNSEL IN FORM AND SUBSTANCE REASONABLY SATISFACTORY TO THE ISSUER TO THE EFFECT THAT ANY PROPOSED TRANSFER OR RESALE IS IN COMPLIANCE WITH THE SECURITIES ACT). 

(ii) THE TRANSFER OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT IS SUBJECT TO THE CERTAIN RESTRICTIONS SPECIFIED IN AN
EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER. A COPY OF SUCH EXCHANGE AND PURCHASE AGREEMENT WILL BE FURNISHED WITHOUT CHARGE BY THE ISSUER TO THE HOLDER HEREOF UPON WRITTEN REQUEST. 

(f) Upon request of such Purchaser, the legend described in Section 3.2(e)(i) shall be removed and the Company shall cause its transfer
agent to issue a certificate or certificates without such legend to such Purchaser, unless otherwise required by federal or state securities laws or unless the Company, with the advice of counsel, reasonably determines that such removal is
inappropriate. 

  
 23 

 ARTICLE IV 

AGREEMENTS 

Section 4.1 Stockholder Approval. 

(a) The Company shall call a meeting of its stockholders (the “Stockholder Meeting”), as promptly as reasonably practicable
after the date hereof, but no later than 90 days following the date hereof, to vote on proposals (collectively, the “Stockholder Proposals”) to approve (i) the increase in the total number of authorized shares of Common Stock
to 250,000,000 shares and (ii) the issuance of shares of Common Stock representing more than 19.99% of the outstanding shares of Common Stock pursuant to the terms of the Indenture, for purposes of satisfying the applicable rules of the NASDAQ
Global Market. 
 (b) Notwithstanding the foregoing, the Company may include the Stockholder Proposals in its proxy statement for the
Company’s 2014 annual meeting of stockholders, provided that such meeting shall have occurred no more than 90 days following the date hereof. The Board of Directors of the Company shall unanimously recommend to the Company’s stockholders
that such stockholders approve the Stockholder Proposals, and shall not modify or withdraw such resolution. In connection with such meeting, the Company shall promptly prepare (and the Purchaser shall cooperate with the Company to prepare) and file
with the SEC a preliminary proxy statement, shall use its reasonable best efforts to solicit proxies for such stockholder approval and shall use its reasonable best efforts to respond to any comments of the SEC or its staff to cause a definitive
proxy statement (or a notice that satisfies the requirements of the SEC’s “notice and access” rules) related to such Stockholders’ Meeting to be mailed to the Company’s stockholders as promptly as practicable after clearance
by the SEC. The Company shall notify the Representative promptly of the receipt of any comments from the SEC or its staff with respect to the preliminary proxy statement and of any request by the SEC or its staff for amendments or supplements to
such proxy statement or for additional information and will supply the Representative with copies of all correspondence between the Company or any of its representatives, on the one hand, and the SEC or its staff, on the other hand, with respect to
such proxy statement (except for any correspondence that would result in the disclosure to the Representative of material and non-public information concerning the Company). If at any time prior to such stockholders’ meeting there shall occur
any event that is required to be set forth in an amendment or supplement to the proxy statement, the Company shall as promptly as practicable prepare and mail to its stockholders such an amendment or supplement. Each of the Representative and the
Company agrees promptly to correct any information provided by it or on its behalf for use in the proxy statement if and to the extent that such information shall have become false or misleading in any material respect, and the Company shall as
promptly as practicable prepare and mail to its stockholders an amendment or supplement to correct such information to the extent required by applicable laws and regulations. The Company shall consult with the Representative prior to mailing any
proxy statement, or any amendment or supplement thereto, and provide the Representative with reasonable opportunity to comment thereon. The directors’ recommendation described in this Section 4.1(b) shall be included in the proxy statement
filed in connection with obtaining such stockholder approval. 

  
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 (c) If the Indenture is a Below Market Indenture, in the event that the approval of any of the
Stockholder Proposals is not obtained at such stockholders’ meeting, or in the case of the At-the-Market Indenture, the approval of the authorized share Stockholder Proposal is not obtained at such stockholders’ meeting, the Company shall
include a proposal to approve (and the Board of Directors shall unanimously recommend approval of) such Stockholder Proposal(s), as applicable, at the next scheduled annual meeting of its stockholders. The Representative acknowledges and agrees that
any stockholder vote with respect to the Stockholder Proposal relating to the 19.99% cap in connection with this Section 4.1(c) will require such approvals as may be required by the NASDAQ Global Market, including without limitation, if
applicable, by having the Company set a vote requirement for such Stockholder Proposal, and having the proxy statement reflect, that such Stockholder Proposal shall require approval by a majority of the votes cast at the Stockholders’ Meeting,
provided that (i) the number of votes cast in favor of the Stockholder Proposal must exceed the number of votes cast against the Stockholder Proposal by the number of shares of Common Stock having been issued upon the conversion of the Notes as
of the record date for such Stockholders’ Meeting, and (ii) the number of shares present at the Stockholders’ Meeting in person or by proxy at the Stockholders’ Meeting must exceed a majority of the Company’s outstanding
shares of Common Stock by the number of shares of Common Stock having been issued upon the conversion of the Notes as of the record date for such Stockholders’ Meeting, in either case with abstentions and broker non-votes not being counted
“for” or “against” the proposal and having no effect on the outcome of the vote; provided that the application of such vote requirement is not reasonably determined by the Company to violate applicable rules and regulations of
the NASDAQ Global Market. 
 Section 4.2 No General Solicitation. None of the Company, its Affiliates, or any Person
acting on its or their behalf will engage in any form of general solicitation or general advertising (within the meaning of Regulation D) in connection with any offer or sale of the Notes. 

Section 4.3 DTC. If the Notes shall be eligible, the Company will cooperate with the holders of such Notes and use
commercially reasonable efforts to permit the Notes to be eligible for clearance and settlement through DTC, provided that such clearance and settlement does not violate any provision of Section 4.9 hereof. 

Section 4.4 Reserved. 

Section 4.5 Market Manipulation. None of the Company Parties will take, directly or indirectly, any action designed to, or
that would constitute or that could reasonably be expected to, cause or result in, under the Exchange Act or otherwise, stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Notes. 

Section 4.6 Reports. As long as any Lender or Purchaser owns any Notes, the Company agrees to timely file (or timely file a
valid extension of such time of filing and file prior to the expiration of any such extension) all SEC Reports. Additionally, the Company will use its reasonable best efforts to maintain the registration and listing of its Common Stock on the NASDAQ
Global Market. The Company shall file promptly with the NASDAQ Global Market a Listing of Additional Shares notification for any shares of the Common Stock underlying the Notes and, if necessary, shall use its reasonable best efforts to effect the
listing of such shares on the NASDAQ Global Market. The Company shall pay all fees in connection with such listing of such shares. 

  
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 Section 4.7 Costs and Expenses. The Company will reimburse the Administrative
Agent, the Representative and any Lender or Purchaser on demand on the date hereof, at the Exchange Date and any Option Closing Date, as the case may be, for all costs and expenses that shall have been incurred by it in connection with the
preparation of this Agreement, the proposed Exchange and/or purchase and sale of the Notes or any other matter contemplated by this Agreement, irrespective of whether closing occurs. In addition, the Company shall pay all costs and expenses incident
to the performance by the Company Parties of their obligations hereunder, including, but not limited to, the following matters: (i) the preparation of the Ancillary Agreements, Indenture, Agreement, Registration Rights Agreement and the
issuance of the Notes; (ii) the preparation, printing, authentication, issuance and delivery of certificates for the Notes; (iii) any stamp or transfer taxes in connection with the original issuance and sale of the Notes; (iv) any
registration or qualification of the Notes for offer and sale under the securities or blue sky laws of applicable states (including filing fees and the reasonable fees and expenses of counsel for the Administrative Agent, Representative, and any
Lender or Purchaser relating to such registration and qualification); (v) the fees and expenses of the Company’s accountants and the fees and expenses of counsel (including local and special counsel) for the Company; (vi) the
reasonable fees and expenses of accountants for the Administrative Agent, the Representative and any Lender or Purchaser and the reasonable fees and expenses of one counsel for the Administrative Agent and Representative, as a group, and one counsel
for the Lenders or Purchasers as a group (selected by the holders of a majority of the Senior Loans or Notes, as the case may be, outstanding), and in no instance shall the Company pay for more than one counsel for the Administrative Agent and
Representative, as a group, and one counsel for the Lenders and Purchasers, as a group; (vii) the performance of the Company Parties’ obligations under the Indenture, Agreement, Ancillary Agreements and the Registration Rights Agreement;
and (viii) all expenses and application fees incurred in connection with the approval of the Notes for book-entry transfer by DTC, if applicable. 

Section 4.8 Press Release. The Company shall, no later than 5:00 PM (New York City time) on the date hereof, issue a press
release(s) or file a Form(s) 8-K announcing (i) the material terms and conditions of the transactions contemplated by the Loan Agreement and this Agreement and (ii) any material nonpublic information previously disclosed to Whitebox, such
press release(s) or Form(s) 8-K to be in a manner and form reasonably satisfactory to the Representative. Notwithstanding anything to the contrary in this Agreement or the Loan Agreement, if the Company shall fail to issue such press release(s) or
Form(s) 8-K within the time frame set forth in the first sentence of this Section 4.8, then, at the election of the Representative, the calculation of the VWAP in connection with the Conversion Price shall not commence until the first
(1) Business Day following such issuance of a press release(s) or Form(s) 8-K by the Company. Any right granted pursuant to this Section 4.8 shall not limit any other rights a party may have pursuant to this Agreement. 

 

  
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 Section 4.9 Assignability of Notes. Until the second anniversary of the date
hereof, Whitebox and its Affiliates shall not be permitted to assign Notes if after giving effect to such assignment(s), Whitebox and its Affiliates do not own at least seventy-five percent (75%) of the aggregate principal amount of the Notes
outstanding under the Indenture (including any paid in kind interest), without the prior written consent of the Company, such consent not to be unreasonably withheld, conditioned or delayed. Commencing on the second anniversary of the date hereof,
and for any period thereafter, Whitebox and its Affiliates shall not be permitted to assign Notes if after giving effect to such assignment(s), Whitebox and its Affiliates do not own a majority of the aggregate principal amount of the Notes
outstanding under the Indenture (including any paid in kind interest), without the prior written consent of the Company, such consent not to be unreasonably withheld, conditioned or delayed. Notwithstanding the foregoing, subject to applicable
securities laws, nothing herein shall restrict a Lender or Purchaser from assigning their rights and interests in and to the Notes if any Significant Event of Default (as defined in the Loan Agreement) shall have occurred and be continuing under the
Indenture or the Obligations (as defined in the Indenture) has been accelerated due to the occurrence of any Event of Default under the Indenture. Without limiting the foregoing, as long as no Significant Event of Default shall have occurred and be
continuing under the Indenture or the Obligations have not been accelerated, (i) until the second anniversary of the date hereof, Whitebox and its Affiliates will at all times continue to own at least seventy-five percent (75%) of the
principal amount of the Notes outstanding and (ii) from and after the second anniversary of the date hereof, Whitebox and its Affiliates will at all times continue to own at least a majority of the principal amount of the Notes outstanding. Any
attempted assignment in violation of this Section 4.9 shall be null and void. 
 Section 4.10 Registration Rights
Agreement. On the date hereof, the parties hereto shall enter into the Registration Rights Agreement, in substantially the form attached hereto as Exhibit G. 

Section 4.11 Purchaser Representative. 

(a) Upon execution of this Agreement by the Purchaser and the Representative, and without further act of any Purchaser, the Representative
shall have the right, power and authority to take all actions required or permitted under this Agreement with respect to the interests and rights of the Purchaser (including, without limitation, the exercise of the power to act as the agent, proxy,
representative and attorney-in-fact for the Purchaser). The Company Parties shall be entitled to rely on all statements, representations and decisions of the Representative in connection with any action of the Purchaser. No bond shall be required of
the Representative, and the Representative shall not receive compensation for its services. Notices or communications to or from the Representative shall constitute notice to or from the Purchaser. The power and authority of the Representative shall
continue in full force and effect until all rights and obligations of the Purchaser under this Agreement shall have terminated, expired or been fully performed. If any Person serving as the Representative is no longer able or willing to serve as the
Representative, a new Representative may be chosen by Whitebox. 
 (b) A decision, act, consent or instruction of the Representative shall
constitute a decision of the Purchaser, and shall be final, binding and conclusive upon the Purchaser, and the Company may rely exclusively upon any such decision, act, notice, consent or instruction of the Representative as being the decision, act,
consent or instruction of the Purchaser. The Company is hereby relieved from any liability to any Person for any acts done by them in accordance with such decision, act, notice, consent or instruction of the Representative. 

  
 27 

 (c) The Representative shall not be liable for any act done or omitted hereunder as
Representative while acting in good faith and in the exercise of reasonable judgment. The Purchaser (including any Joining Party) shall jointly and severally indemnify the Representative and hold such Representative harmless against any loss,
liability or expense incurred without gross negligence or bad faith on the part of the Representative and arising out of or in connection with the acceptance or administration of its duties hereunder. 

Section 4.12 Disclosure Schedules; Material Non-Public Information. 

(a) The Company Parties shall deliver to the Purchaser and Lender, concurrently with the execution of this Agreement, a complete copy of the
Company Party Disclosure Schedules. On each Option Closing Date, the Company Parties shall deliver to the Representative, on behalf of the Purchaser, a supplemented or amended copy of the Company Party Disclosure Schedules, updated as of such Option
Closing Date (the “Updated Disclosure Schedules”). Notwithstanding anything in this Agreement to the contrary, any Option Notice (other than a Put Notice) provided in accordance with this Agreement may be rescinded, and no further
action shall be taken with respect to such notice and any action taken in connection with such notice shall be deemed void, if the disclosures contained in the Updated Disclosure Schedules are not satisfactory to the Representative, in its sole
discretion. 
 (b) No later than two (2) Business Days following any Exchange Date or Option Closing Date, the Company shall publicly
disclose, either by a press release or Form 8-K, any material non-public information provided by the Company to the Administrative Agent, Representative, Purchaser or Lender. 

Section 4.13 Officer’s Certificate. No later than 10:00 AM (New York City time) on the sixth (6) Trading Day
following the date hereof, the Company shall provide to the Administrative Agent a certificate signed by the Chief Financial Officer (the “Officer’s Certificate”) of the Company setting forth the Conversion Price of the Notes.
Promptly following receipt of such Officer’s Certificate, the Company and the Administrative Agent shall work together to ensure that the Conversion Price be inserted into the applicable provisions of the Indenture. Notwithstanding anything
herein to the contrary, the parties hereto, acting together, may, in their sole discretion, agree to modify the definition of Conversion Price at any time prior to the delivery of the Officer’s Certificate by the Company. 

Section 4.14 Make-Whole Shares. The Company shall take all actions necessary to cause, upon their issuance, the shares of
Common Stock issued in satisfaction of any make-whole payments that may become due under the Notes (“Make-Whole Shares”) to be duly authorized, validly issued, fully paid and nonassessable. The Company shall take all action
necessary to reserve for issuance such Make-Whole Shares. 
  

  
 28 

 ARTICLE V 

INDEMNIFICATION 

Section 5.1 Indemnification. Each of the Company Parties, jointly and severally, agrees to indemnify and hold harmless the
Purchaser, the Administrative Agent, the Representative, the Lender, the directors, officers, employees, Affiliates and agents of the Purchaser, the Lender, the Administrative Agent or the Representative and each Person who controls the Purchaser,
Lender, Administrative Agent or Representative within the meaning of either the Securities Act or the Exchange Act against any and all losses, claims, damages or liabilities, joint or several, to which they or any of them may become subject under
the Act, the Exchange Act or other U.S. federal or state statutory law or regulation, at common law or otherwise, insofar as such losses, claims, damages or liabilities or actions in respect thereof arise out of or are based upon any
misrepresentation, breach or inaccuracy of any representation, warranty, covenant or agreement made by the Company Parties in this Agreement or any agreement, document or instrument contemplated herein, and agrees to reimburse each such indemnified
party, as incurred, for any legal or other expenses reasonably incurred by it in connection with investigating or defending any such loss, claim, damage, liability or action, in each case except for any such loss, claim, damage, liability or action
attributable to such Purchaser’s gross negligence or wilful misconduct. 
 Section 5.2 Indemnification Procedures.
Promptly after receipt by an indemnified party under this Article V of notice of the commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against the indemnifying party under this Article V, notify the
indemnifying party in writing of the commencement thereof; but the failure so to notify the indemnifying party (i) will not relieve it from liability under paragraph (a) or (b) above unless and to the extent it did not otherwise learn
of such action and such failure results in the forfeiture by the indemnifying party of substantial rights and defenses and (ii) will not, in any event, relieve the indemnifying party from any obligations to any indemnified party other than the
indemnification obligation provided in paragraph (a) or (b) above. The indemnifying party shall be entitled to appoint counsel of the indemnifying party’s choice at the indemnifying party’s expense to represent the indemnified
party in any action for which indemnification is sought (in which case the indemnifying party shall not thereafter be responsible for the fees and expenses of any separate counsel, retained by the indemnified party or parties except as set forth
below); provided, however, that such counsel shall be satisfactory to the indemnified party. Notwithstanding the indemnifying party’s election to appoint counsel to represent the indemnified party in an action, the indemnified party shall have
the right to employ separate counsel (including local counsel), and the indemnifying party shall bear the reasonable fees, costs and expenses of such separate counsel if (i) the use of counsel chosen by the indemnifying party to represent the
indemnified party would present such counsel with a conflict of interest; (ii) the actual or potential defendants in, or targets of, any such action include both the indemnified party and the indemnifying party and the indemnified party shall
have reasonably concluded that there may be legal defenses available to it and/or other indemnified parties that are different from or additional to those available to the indemnifying party; (iii) the indemnifying party shall not have employed
counsel satisfactory to the indemnified party to represent the indemnified party within a reasonable time after notice of the institution of such action; or (iv) the indemnifying party shall authorize the indemnified party in writing to employ
separate counsel at the expense of the indemnifying party. An indemnifying party will not, without the prior written consent of the indemnified parties, settle or compromise or consent to the entry of any judgment with respect to any pending or
threatened claim, action, suit or proceeding in respect of which indemnification or contribution may be sought hereunder (whether or not the indemnified parties are actual or potential parties to such claim or action) unless such settlement,
compromise or consent includes an unconditional release of each indemnified party from all liability arising out of such claim, action, suit or proceeding. 

  
 29 

 ARTICLE VI 

MISCELLANEOUS 

Section 6.1 Specific Performance. The parties acknowledge that money damages are not an adequate remedy for violations of
this Agreement and that any party may, in its sole discretion, apply to a court of competent jurisdiction for specific performance or injunctive or such other relief as such court may deem just and proper in order to enforce this Agreement or
prevent any violation hereof and, to the extent permitted by applicable law, each party waives any objection to the imposition of such relief, this being in addition to any other remedy to which such party is entitled at law or in equity. 

Section 6.2 Survival. The respective agreements, representations, warranties, indemnities and other statements of the
Company Parties or their officers and of other parties hereto set forth in or made pursuant to this Agreement will remain in full force and effect, regardless of any investigation made by or on behalf of the parties hereto or any of the indemnified
persons referred to in Article V hereof, and will survive delivery of and payment for the Notes, until the expiration of the applicable statute of limitations. The provisions of Section 4.7 and Article V hereof shall survive the termination or
cancellation of this Agreement. 
 Section 6.3 Notices. All notice and other communications provided for or permitted
hereunder shall be made in writing by hand delivery, by facsimile, by courier guaranteeing overnight delivery or by first-class mail, return receipt requested, and shall be deemed given (i) when made, if made by hand delivery, (ii) upon
confirmation, if made by facsimile, (iii) one (1) Business Day after being deposited with such courier, if made by overnight courier or (iv) on the date indicated on the notice of receipt, if made by first-class mail, to the parties
as follows: 
 (a) if to the Lender, Purchaser, the Administrative Agent or the Representative, to the following address: 

Whitebox Advisors LLC 
 3033
Excelsior Boulevard, Suite 300 
 Minneapolis, Minnesota, 55416 

Attention: Jake Mercer 

Facsimile: (612) 253-6149 

with a copy, which shall not constitute notice, to: 

Brown Rudnick LLP 
 One Financial
Center 
 Boston, Massachusetts 02111 

Attention: Andreas Andromalos 

Facsimile: (617) 289-0495 

  
 30 

 (b) if to the Company Parties, to the following address: 

Gevo, Inc. 
 345 Inverness Drive
South, Building C 
 Suite 310 

Englewood, Colorado 80112 

Attention: Corporate Secretary 

Facsimile: (303) 858-8431 

with a copy, which shall not constitute notice, to: 

Paul Hastings LLP 
 4747 Executive
Drive, 12th Floor 
 San Diego, California 92121 

Attention: Deyan Spiridonov and Teri O’Brien 

Facsimile: (858) 458-3005 

Any party hereto may change his or its address for notice by giving notice thereof in the manner herein above provided. 

Section 6.4 Parties in Interest. All covenants and agreements contained in this Agreement, by or on behalf of any of the
parties executing this Agreement shall bind such parties, and shall bind and inure to the benefit of the respective successors and permitted assigns of the parties hereto whether so expressed or not; provided, however, that the foregoing shall not
in and of itself permit the assignment of the rights and obligations hereunder or thereunder. 
 Section 6.5 Governing Law;
Consent to Jurisdiction; Waiver of Jury Trial. This Agreement shall be governed by and construed in accordance with the internal laws of the State of New York, without giving effect to its conflicts of laws provisions. Each of the parties
hereto irrevocably submits to the exclusive jurisdiction of the courts of the State of New York, City of New York, for the purpose of any suit, action, proceeding or judgment relating to or arising out of this Agreement and the transactions
contemplated hereby. Service of process in connection with any such suit, action or proceeding may be served on each party hereto anywhere in the world by the same methods as are specified for the giving of notices under this Agreement. Each of the
parties hereto irrevocably consents to the jurisdiction of any such court in any such suit, action or proceeding and to the laying of venue in such court. Each party hereto irrevocably waives any objection to the laying of venue of any such suit,
action or proceeding brought in such courts and irrevocably waives any claim that any such suit, action or proceeding brought in any such court has been brought in an inconvenient forum. EACH OF THE PARTIES HERETO WAIVES ANY RIGHT TO REQUEST A
TRIAL BY JURY IN ANY LITIGATION WITH RESPECT TO THIS AGREEMENT AND REPRESENTS THAT COUNSEL HAS BEEN CONSULTED SPECIFICALLY AS TO THIS WAIVER. The parties hereto agree and acknowledge that each party has retained counsel in connection with the
negotiation and preparation of this Agreement, and that any rule of construction to the effect that any ambiguities are to be resolved against the drafting party shall not be employed in the interpretation of the foregoing agreements or any
amendment, schedule or exhibits thereto. 

  
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 Section 6.6 Entire Agreement. The Loan Agreement, the Indenture, Ancillary
Agreements and this Agreement constitute the entire agreement of the parties hereto relating to the Exchange and the Notes, superseding all prior written and prior or contemporaneous oral negotiations, understandings, arrangements, contracts or
agreements. 
 Section 6.7 Counterparts. This Agreement may be executed in any number of counterparts, each of which
shall be deemed an original, but all of which together shall constitute one and the same instrument. This Agreement (and all exhibits, certificates, appendices, schedules and amendments) may be executed in any number of counterparts, each of which
when so executed and delivered shall be deemed to be an original and all of which taken together shall constitute one and the same instrument, respectively. Executed copies of the signature pages of this Agreement sent by facsimile or transmitted
electronically in Portable Document Format shall be treated as originals, fully binding and with full legal force and effect, and the parties waive any rights they may have to object to such treatment. 

Section 6.8 Assignment; Successors. Except as set forth herein and as set forth in Section 10.6 of the Loan Agreement,
neither this Agreement nor any of the rights, interests or obligations hereunder may be assigned (whether by operation of law or otherwise). Notwithstanding anything herein to the contrary, this Agreement will inure to the benefit of and be binding
upon the parties hereto and their respective successors and permitted assigns and the indemnified persons referred to in Section 9 hereof and their respective successors, and no other Person will have any right or obligation hereunder.

 Section 6.9 Waiver; Amendments. No waiver of this Agreement shall be binding unless executed in writing by the
party against whom the waiver is to be effective. This Agreement may not be amended except by an instrument in writing signed by the Company and the holders of a majority of the aggregate amount of the Senior Loan and/or Notes outstanding.
Notwithstanding the foregoing, no amendment of this Agreement shall be effective unless signed in writing by the Representative. No waiver of any of the provisions of this Agreement shall be deemed or shall constitute a waiver of any other provision
hereof (whether or not similar), nor shall such waiver constitute a continuing waiver unless otherwise expressly provided. 

Section 6.10 Severability. Each provision of this Agreement shall be treated as a separate and independent clause, and the
unenforceability of any one clause shall in no way impair the enforceability of any of the other clauses herein. If one or more of the provisions contained in this Agreement shall for any reason be held to be excessively broad as to scope, activity,
subject or otherwise so as to be unenforceable at law, such provision or provisions shall be construed by the appropriate judicial body by limiting or reducing it or them, so as to be enforceable to the maximum extent compatible with the applicable
law as it shall then appear. 
 Section 6.11 Additional Parties. During the term of this Agreement, the Company Parties
and Whitebox shall cause all additional Lenders and Additional Guarantors under the Loan Agreement (other than Whitebox), to become parties hereto by execution and delivery of a Joinder Agreement, and the consent of any other parties shall not be
required for the amendment hereto effected by such Joinder Agreement to be effective. All such Additional Guarantors shall be deemed to be a “Company Party” for purposes of this Agreement. All such additional Lenders shall be deemed to be
a “Lender” and “Purchaser” for purposes of this Agreement, other than as 

  
 32 

 
set forth in the Joinder Agreement. The Company Parties shall, as a condition to an Additional Guarantor being made party to this Agreement, provide Updated Disclosure Schedules with any
applicable disclosure necessary to make the representations and warranties set forth herein accurate and complete, as if such Additional Guarantor was a party to this Agreement on the date hereof. 

Section 6.12 Titles and Subtitles. The titles and subtitles used in this Agreement are for convenience only and are not to
be considered in construing or interpreting any term or provision of this Agreement. 
 Section 6.13 Interpretations.
Whenever the context requires: the singular number shall include the plural, and vice versa; the masculine gender shall include the feminine and neuter genders; the feminine gender shall include the masculine and neuter genders; and the neuter
gender shall include the masculine and feminine genders. 
 Section 6.14 Certain Definitions. As used in this Agreement,
the following terms having the meanings specified in this Section 6.14: 
 (a) “Additional Amount” shall mean, at the
election of Whitebox in its sole discretion, the Additional Senior Loan Amount, the Put Note Amount or a combination thereof allocated in a manner determined by Whitebox in its sole discretion. 

(b) “Additional Senior Loan Amount” shall mean an aggregate amount equal to (A) $5,000,000 minus the principal
amount of the Put Notes (if any, and excluding the Put Note Structuring Fee (as defined herein)) (the “Additional Principal Loan Amount”), plus (B) the quotient of a fraction, the numerator of which is the Additional Principal
Loan Amount multiplied by 0.035, and the denominator of which is 0.965 (the “Loan Structuring Fee”). 
 (c)
“Affiliate” shall mean, with respect to a person, any other Person which, directly or indirectly, controls, is controlled by, or is under common control with, such Person. The term “control” (including, with correlative
meaning, the terms “controlled by” and “under common control with”), as used with respect to any Person, means the possession, directly or indirectly, of the power to (i) vote 10% or more of the securities having ordinary
voting power for the election of directors (or comparable positions) of such Person or (ii) direct or cause the direction of the management and policies of such Person, whether through the ownership of voting securities, by contract or
otherwise. 
 (d) “Anti-Terrorism Law” shall mean any requirement of law related to terrorism financing or money-laundering
including the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act (“Patriot Act”) of 2001 (Title III of Pub. L. 107-56), The Currency and Foreign Transactions Reporting
Act (also known as the “Bank Secrecy Act”, 31 U.S.C. §§ 5311-5330 and 12 U.S.C. §§ 1818(s), 1820(b) and 1951-1959), the Trading With the Enemy Act (50 U.S.C. § 1 et seq., as amended) and Executive Order 13224
(effective September 24, 2001). 
 (e) “Business Day” shall mean any day other than a Saturday, Sunday or other day on
which banks in New York City are authorized or required by law to close. 

  
 33 

 (f) “Capital Leases” shall mean, as applied to any Person, any lease of any
Property by such Person as lessee which would, in accordance with GAAP, be required to be classified and accounted for as a capital lease on the balance sheet of such Person. 

(g) “Casualty Event” shall mean any loss of title or any loss of or damage to or destruction of, or any condemnation or other
taking (including by any Governmental Authority) of, any property of any Company Party. “Casualty Event” shall include but not be limited to any taking of all or any part of any Real Property of any person or any part thereof, in or by
condemnation or other eminent domain proceedings pursuant to any law, or by reason of the temporary requisition of the use or occupancy of all or any part of any Real Property of any person or any part thereof by any Governmental Authority, civil or
military, or any settlement in lieu thereof. 
 (h) “CERCLA” shall mean the Comprehensive Environmental Response,
Compensation, and Liability Act of 1980, as amended, state and local analogs, and all rules and regulations and requirements thereunder in each case as now or hereafter in effect. 

(i) “Closing Price” shall mean the closing sale price (or if no closing sale price is reported, the last sale price) of the
Common Stock on the NASDAQ Stock Market on such date or dates, or, if the Common Stock is not listed or admitted to trading on the NASDAQ Stock Market, but is traded in the over-the-counter market, the closing sale price of such Common Stock, or, if
no sales are publicly reported, the average of the closing bid and asked prices, as furnished by two members of the Financial Industry Regulatory Authority, Inc., who make a market in such Common Stock selected from time to time by the Company for
that purpose. 
 (j) “Code” shall mean the Internal Revenue Code of 1986, as amended, and any successor statute and the
rules and regulations promulgated thereunder. 
 (k) “Collateral” shall mean all Property and interests in Property and
proceeds thereof now owned or hereafter acquired by a Company Party in or upon which a Lien is granted by such Person in favor of Administrative Agent, for the benefit of the Administrative Agent and each Lender, under the Loan Agreement or any
document contemplated thereby, including without limitation, all “Collateral” and “Mortgaged Properties” (as defined in each of the Mortgages (as defined in the Loan Agreement) and the Pledge and Security Agreement, as
applicable) or similar terms used in the Security Instruments, provided that, in each case, Collateral shall not include Excluded Property. 

(l) “Control” shall mean the possession, directly or indirectly, of the power to direct or cause the direction of the
management or policies of a person, whether through the ownership of voting securities, by contract or otherwise, and the terms “controlling” and “controlled” and “under common control” shall have meanings correlative
thereto. 
 (m) “Controlled Group” shall mean all members of a controlled group of corporations and all businesses (whether
or not incorporated) under common control which, together with Company, are treated as a single employer under Section 414 of the Code. 

(n) “Conversion Price” shall mean an amount equal to the lesser of (i) $1.49 and (ii) the aggregate of (x) VWAP
for the five (5) consecutive Trading Days immediately following the date hereof, plus (y) an amount equal to fifteen percent (15%) of such price, or such other amount as the parties may mutually agree in their sole and absolute
discretion. 

  
 34 

 (o) “Debtor Relief Law” means the Bankruptcy Code, and all other liquidation,
conservatorship, bankruptcy, assignment for the benefit of creditors, moratorium, rearrangement, receivership, insolvency, reorganization, or similar debtor relief laws of the United States or other applicable jurisdictions from time to time in
effect. 
 (p) “Deposit Account” shall have the meaning given to such term in the Uniform Commercial Code (or any successor
statute), as adopted and in force in the State of New York or, when the laws of any other state govern the method or manner of the perfection or enforcement of any Lien in any of the Collateral, the Uniform Commercial Code (or any successor statute)
of such other state. 
 (q) “Disposition” shall mean any sale, lease, license, transfer, assignment, conveyance, Sale
Leaseback Transaction or other disposition of any Property. 
 (r) “Domestic Subsidiary” shall mean any Subsidiary of the
Company or any other Company Party organized under the laws of the United States of America, any State thereof or the District of Columbia. 

(s) “Environment” or “Environmental” shall have the meanings set forth in 42 U.S.C. 9601(8) and shall
include, without limitation, soil, soil gas, sediment, fish, wildlife, biota and all other natural resources. 
 (t) “Environmental
Claim” shall mean any third party (including governmental agencies and employees) action, lawsuit, claim, demand, regulatory action or proceeding, order, decree, consent agreement or notice of potential or actual responsibility or violation
which seeks to impose liability under any Environmental Law. 
 (u) “Environmental Laws” shall mean, all Legal Requirements
relating to Hazardous Substances, pollution, restoration or protection of the environment or the health and safety of employees as it related to Hazardous Substances, including, but not limited to the Federal Water Pollution Control Act (33 U.S.C.
§1251 et seq.), Resource Conservation and Recovery Act (42 U.S.C. §6901 et seq.), Safe Drinking Water Act (42 U.S.C. §3000(f) et seq.), Toxic Substances Control Act (15 U.S.C. §2601 et seq.), Clean Air Act (42 U.S.C. §7401
et seq.), Comprehensive Environmental Response, Compensation and Liability Act (42 U.S.C. §9601 et seq.) and other similar state and local statutes, in effect as of the date hereof, including any judicial or administrative interpretation
thereof. 
 (v) “Environmental Permits” means any permit, license, order, approval, registration or other authorization
issued under Environmental Laws by any Governmental Authority. 
 (w) “Excluded Property” has the meaning assigned to such
term in the Pledge and Security Agreement. 

  
 35 

 (x) “Excluded Subsidiaries” shall mean (a) any Foreign Subsidiary of any
Company Party and (b) any of the other Persons satisfying the provisions set forth in Section 6.22(a) of the Loan Agreement. 
 (y)
“Executive Order” shall mean any executive order or regulation promulgated under any authorizing statute including, but not limited to, the International Emergency Economic Powers Act, 50 U.S.C. §§ 1701 et seq., The
Trading with the Enemy Act, 50 U.S.C. App. 1 et seq., and thereunder with the result that the investment in the Company Parties (whether directly or indirectly) is prohibited by law, or the Senior Loan made by the Lenders would be in
violation of law, the executive order, any related enabling legislation or any other similar executive orders. 
 (z) “Foreign
Subsidiary” shall mean any Subsidiary of a Company Party that is not a Domestic Subsidiary and any Subsidiary of any Foreign Subsidiary. 

(aa) “Financial Statements” shall mean the audited financial statements, including the audited consolidated balance sheet, of
the Company and the Company Parties in each case, as of December 31, 2013, or December 31 of the relevant fiscal year then ended, as applicable, and the related audited consolidated statements of income, cash flow, and retained earnings of
the Company and the Company Parties, in each case, for the fiscal year ending December 31, 2013, or the fiscal year then ended, as applicable, copies of which have been delivered to Representative and Purchasers. 

(bb) “GAAP” shall mean means generally accepted accounting principles recognized as such by the Financial Accounting Standards
Board (or generally recognized successor) consistently applied and maintained throughout the period indicated and consistent with applicable laws, except for changes mandated by the Financial Accounting Standards Board or any similar accounting
authority of comparable standing (except that the determination of whether a lease is to be treated as an operating lease or capital lease shall be made without giving effect to any change in accounting for leases pursuant to GAAP, including,
without limitation, resulting from the implementation of proposed changes to Accounting Standards Codification Topic 840, Leases, by the Exposure Draft issued by the FASB and IASB on August 17, 2010 (and related updates and changes to the
Exposure Draft), or any successor proposal), applied on a basis consistent with the requirements of Section 1.3 of the Loan Agreement. If any change in any accounting principle or practice is required by the Financial Accounting Standards Board
(or generally recognized successor) in order for such principle or practice to continue as a generally accepted principle or practice, all financial reports or statements required hereunder or in connection herewith may be prepared in connection
with such change, but all calculations and determinations to be made hereunder may be made in accordance with such change only if Company and the Representative agrees to do so. Whenever any accounting term is used herein which is not otherwise
defined, it shall be interpreted in accordance with GAAP or International Financial Reporting Standards (IFRS), as applicable. 
 (cc)
“Governmental Authority” shall mean the government of the United States of America or any other nation, or of any political subdivision thereof, whether state or local, and any agency, authority, instrumentality, regulatory body,
court, central bank or other entity exercising executive, legislative, judicial, taxing, regulatory or administrative powers or functions of or pertaining to government (including any supra-national bodies such as the European Union or the European
Central Bank). 

  
 36 

 (dd) “Hazardous Substance” shall mean any substances, materials, or wastes
identified or regulated as “hazardous,” “toxic,” or “dangerous” pursuant to any Environmental Law, including without limitation pollutants, contaminants, petroleum, petroleum products (including crude oil or any faction
thereof), radionuclides, radioactive materials, and medical and infectious waste. 
 (ee) “Hedge Contract” shall mean
(a) any and all rate swap transactions, basis swaps, credit derivative transactions, forward rate transactions, puts, commodity swaps, commodity options, forward commodity contracts, equity or equity index swaps or options, bond or bond price
or bond index swaps or options or forward bond or forward bond price or forward bond index transactions, interest rate options, forward foreign exchange transactions, cap transactions, floor transactions, collar transactions, currency swap
transactions, cross-currency rate swap transactions, currency options, spot contracts, or any other similar transactions or any combination of any of the foregoing (including any options to enter into any of the foregoing), whether or not any such
transaction is governed by or subject to any master agreement, and (b) any and all transactions of any kind, and the related confirmations, which are subject to the terms and conditions of, or governed by, any form of master agreement published
by the International Swaps and Derivatives Association, Inc., any International Foreign Exchange Master Agreement, or any other master agreement (any such master agreement, together with any related schedules, a “Master Agreement”),
including any such obligations or liabilities under any Master Agreement. 
 (ff) “Intellectual Property” shall mean with
respect to any Person, all of such Person’s rights, title and interest in and to all copyrights, patents and trademarks, including, without limitation, all present and future: trade secrets, know-how and other proprietary information;
trademarks, trademark applications, internet domain names, service marks, service mark applications, trade dress, trade names, business names, designs, logos, slogans (and all translations, adaptations, derivations and combinations of the foregoing)
indicia and other source and/or business identifiers, and the goodwill of the business relating thereto and all registrations or applications for registrations which have heretofore been or may hereafter be issued thereon throughout the world (but
excluding intent-to-use trademark applications unless and until a statement of use or amendment to allege use is filed and accepted by the U.S. Patent and Trademark Office or any other filing is made or circumstances otherwise change so that the
interests of a Company Party in such trademarks is no longer on an “intent-to-use” basis, at which time such trademarks shall automatically and without further action by the parties be subject to the security interest granted by such
Company Party to the Administrative Agent under the Loan Agreement); copyrights and copyright applications; (including copyrights for computer programs) and all tangible and intangible property embodying the copyrights, unpatented inventions
(whether or not patentable); patents and patent applications; industrial design applications and registered industrial designs; license agreements related to any of the foregoing and income therefrom; books, records, writings, computer tapes or
disks, flow diagrams, specification sheets, computer software, source codes, object codes, executable code, data, databases and other physical manifestations, embodiments or incorporations of any of the foregoing; the right to sue for all past,
present and future infringements of any of the foregoing; all other intellectual property; and all common law and other rights throughout the world in and to all of the foregoing. 

  
 37 

 (gg) The Company or any Company Party shall be deemed to have “Knowledge” (or
other similar phrase) of a particular fact or other matter if any Responsible Officer or any other executive officer (as defined in Item 401 of Regulation S-K) of the Company has “Knowledge” of such fact or other matter. An
individual shall be deemed to have “Knowledge” of a particular fact or other matter if such individual is actually aware of such fact or other matter or would have knowledge of such fact or other matter after a commercially reasonable
inquiry and investigation. 
 (hh) “Legal Requirements” shall mean, as to any Person, any law, statute, ordinance, decree,
requirement, order, judgment, rule, regulation (or official interpretation of any of the foregoing, including any official policy or guidance) of, and the terms of any license or permit issued by, any Governmental Authority, including, but not
limited to, Regulations D, T, U, and X, which is applicable to such Person. 
 (ii) “Lien” shall mean any recorded or
unrecorded, express or implied, written or oral mortgage, lien (statutory or otherwise), pledge, assignment, charge, deed of trust, security interest, hypothecation, preference, deposit arrangement or encumbrance (or other type of arrangement having
the practical effect of the foregoing) to secure or provide for the payment of any obligation of any Person, whether arising by contract, operation of law, or otherwise (including, without limitation, the interest of a vendor or lessor under any
conditional sale agreement, synthetic lease, Capital Lease, or other title retention agreement). 
 (jj) “Material Adverse
Condition” shall mean (a) a material adverse change in the business, assets, financial condition or operations of the Company Parties, taken as a whole, (b) a material adverse effect on any Company Party’s ability, as a
whole, to perform its obligations under the Loan Agreement, any other document contemplated by the Loan Agreement or any Equity Documents, or (c) a material adverse change on the validity or enforceability of this Agreement or any of the other
material Exchange Documents (other than as a direct result of an action or omission by Administrative Agent or Representative solely to the extent that Administrative Agent or Representative was expressly required to take such action under the
Exchange Documents and failed to do so). 
 (kk) “Material Contract” shall mean each contract or agreement to which Company
or any other Company Party is a party that is required (or would be required if such Person were subject to the reporting requirements of Regulation S-K) to be filed with the SEC pursuant to the requirements of Item 601(b) of Regulation S-K
(other than those which have expired, terminated or are otherwise no longer in effect). 
 (mm) “Multiemployer Plan” shall
mean a “multiemployer plan” as defined in Section 3(37) and Section 4001(a)(3) of ERISA that is subject to Title IV of ERISA. 

(nn) “National Priorities List” has the meaning assigned such term in CERCLA. 

  
 38 

 (oo) “Obligations” shall mean (a) obligations of the Company and the other
Company Parties from time to time to pay (and otherwise arising under or in respect of the due and punctual payment of) (i) the principal of and the Applicable Premium (as defined in the Loan Agreement) (and any other premium, if any), and
interest (including interest accruing during the pendency of any proceeding under any Debtor Relief Law, regardless of whether allowed or allowable in such proceeding) on the Senior Loans, when and as due, whether at maturity, by acceleration, upon
one or more dates set for prepayment or otherwise, (ii) the Structuring Fee and (iii) all other monetary obligations, including fees, costs, expenses and indemnities, whether primary, secondary, direct, contingent, fixed or otherwise
(including monetary obligations incurred during the pendency of any proceeding under any Debtor Relief Law, regardless of whether allowed or allowable in such proceeding), of the Company and the other Company Parties under the Equity Documents, the
Loan Agreement and any documents contemplated by the Loan Agreement and (b) the due and punctual performance of all covenants, agreements, obligations and liabilities of the Company and the other Company Parties under or pursuant to the Equity
Documents, the Loan Agreement and any documents contemplated by the Loan Agreement. 
 (pp) “OFAC” shall mean the U.S.
Treasury Department Office of Foreign Assets Control. 
 (qq) “Organizational Documents” shall mean with respect to any
Person, (i) in the case of any corporation, the certificate of incorporation and by-laws (or similar documents) of such Person, (ii) in the case of any limited liability company, the certificate of formation and operating agreement (or
similar documents) of such Person, (iii) in the case of any limited partnership, the certificate of formation and limited partnership agreement (or similar documents) of such Person, (iv) in the case of any general partnership, the
partnership agreement (or similar document) of such Person and (v) in any other case, the functional equivalent of the foregoing. 

(rr) “Person” shall mean any person or entity, whether an individual, trustee, corporation, limited liability company, general
partnership, limited partnership, trust, unincorporated organization, business association, firm, joint venture, governmental entity. 
 (ss)
“Permits” shall mean any approval, certificate of occupancy, consent, waiver, exemption, variance, franchise, order, permit, authorization, right or license of or from any Governmental Authority, including without limitation, an
Environmental Permit. 
 (tt) “Permitted Dispositions” shall mean any Disposition permitted by Section 6.4 of the Loan
Agreement. 
 (uu) “Permitted Lien” shall mean any Liens permitted under Section 6.1 of the Loan Agreement. 

(vv) “Plan” shall mean any employee pension benefit plan, as defined in Section 3(2) of ERISA, subject to the provisions
of Title IV of ERISA, Section 412 of the Code or Section 302 of ERISA other than a Multiemployer Plan. 
 (ww)
“Property” of any Person means any property or assets (whether real, personal, or mixed, tangible or intangible) of such Person. 

  
 39 

 (xx) “Put Note Amount” shall mean an aggregate amount equal to
(A) $5,000,000 minus the amount of the Additional Senior Loan Put Notes (if any, and excluding Loan Structuring Fee) (the “Additional Put Note Amount”), plus (B) the quotient of a fraction, the numerator of which is
the Additional Put Note Amount multiplied by 0.035, and the denominator of which is 0.965 (the “Put Note Structuring Fee,” and together with the Loan Structuring Fee, the “Structuring Fee”). 

(yy) “Real Property” shall mean, collectively, all right, title and interest (including any leasehold estate) in and to any
and all parcels of or interests in real property owned, or leased by any person, whether by lease, license or other means, together with, in each case, all easements, hereditaments and appurtenances relating thereto and all improvements and
appurtenant futures and, for the avoidance of doubt, includes buildings and fixtures. 
 (zz) “Release” shall mean any
release, deposit, discharge, emission, leaking, leaching, spilling, seeping, migrating, injecting, pumping, pouring, emptying, escaping, dumping, or disposing into the Environment or as may be defined in the Environmental Laws. 

(aaa) “Regulations D, T, U and X” shall mean Regulations D, T, U, and X of the Federal Reserve Board, as the same is from time
to time in effect, and all official rulings and interpretations thereunder or thereof. 
 (bbb) “Requisite Lenders” shall
mean, Lenders holding unfunded commitments under the Loan Agreement and the aggregate outstanding principal amount of the Senior Loans representing more than 50% of the sum of all unfunded commitments under the Loan Agreement of the Lenders and the
entire outstanding principal amount of the Senior Loans of the Lenders; provided further that, if there are two or more Lenders, the commitment under the Loan Agreement of, and the portion of the Senior Loans held or deemed held by, any defaulting
Lender under the Loan Agreement shall be excluded for purposes of making a determination of Requisite Lenders unless all Lenders are defaulting Lenders under the Loan Agreement. 

(ccc) “Response” shall mean any response, remedial, removal, or corrective actions undertaken as required pursuant to
Environmental Laws to address a Release of Hazardous Substances to the Environment. 
 (ddd) “Responsible Officer” means
(a) with respect to any Person that is a corporation, such Person’s Chief Executive Officer, President, Chief Financial Officer, Treasurer or General Counsel, (b) with respect to any Person that is a limited liability company, a
manager or the Responsible Officer of such Person’s managing member or manager, and (c) with respect to any Person that is a general partnership or a limited liability partnership, the Responsible Officer of such Person’s general
partner or partners. 
 (eee) “Returns” shall mean any federal, state, local, or foreign report, declaration of estimated
Tax, information statement or return relating to, or required to be filed in connection with, any Taxes, including any information return or report with respect to backup withholding or other payments of third parties. 

  
 40 

 (fff) “Sale Leaseback Transaction” shall mean means any arrangement, directly or
indirectly, with any person whereby any Company Party shall sell or transfer any property, real or personal, used or useful in its business, whether now owned or hereafter acquired, and thereafter rent or lease such property or other property which
it intends to use for substantially the same purpose or purposes as the property being sold or transferred. 
 (ggg) “Security
Instruments” shall mean, collectively, (a) the Mortgages (as defined in the Loan Agreement), (b) the Pledge and Security Agreement, (c) each other agreement, instrument or document executed at any time in connection with the
Pledge and Security Agreement, or the Mortgages, (d) each agreement, instrument or document executed in connection with any Deposit Account subject to the Administrative Agent’s control; and (e) each other agreement, instrument or
document executed at any time in connection with securing the Obligations. 
 (hhh) “Solvent” shall mean, with respect to
any Person, as of the date of any determination, that on such date (a) the fair value of the Property of such Person (both at fair valuation and at present fair saleable value) is greater than the total liabilities, including contingent
liabilities, of such Person, (b) the present fair saleable value of the assets of such Person is not less than the amount that will be required to pay the probable liability of such Person on its debts as they become absolute and matured,
(c) such Person is able to realize upon its assets and pay its debts and other liabilities, contingent obligations, and other commitments as they mature in the normal course of business, (d) such Person does not intend to, and does not
believe that it will, incur debts or liabilities beyond such Person’s ability to pay as such debts and liabilities mature, and (e) such Person is not engaged in business or a transaction, and is not about to engage in business or a
transaction, for which such Person’s Property would constitute unreasonably small capital after giving due consideration to current and anticipated future capital requirements and current and anticipated future business conduct and the
prevailing practice in the industry in which such Person is engaged. In computing the amount of contingent liabilities at any time, such liabilities shall be computed at the amount which, in light of the facts and circumstances existing at such
time, represents the amount that can reasonably be expected to become an actual or matured liability. 
 (iii) “Subsidiary”
shall mean, with respect to any Person (the “parent”) at any date, (i) any other corporation, limited liability company, association, or other business entity of which securities or other ownership interests representing more than 50%
of the voting power of all equity interests entitled (without regard to the occurrence of any contingency) to vote in the election of the Board of Directors thereof are, as of such date, owned, controlled or held by the parent and/or one or more
subsidiaries of the parent, (ii) any partnership (a) the sole general partner or the managing general partner of which is the parent and/or one or more subsidiaries of the parent or (b) the only general partners of which are the
parent and/or one or more subsidiaries of the parent and (iii) any other Person that is otherwise Controlled by the parent and/or one or more subsidiaries of the parent. Unless the context requires otherwise, “Subsidiary”
refers to a Subsidiary of the Company. 
 (jjj) “Taking” shall mean any condemnation for public use of, or damage by reason
of, the action of any Governmental Authority, or any transfer by private sale in lieu thereof, either temporarily or permanently. 

  
 41 

 (kkk) “Taxes” shall mean all taxes, charges, fees, levies, or other assessments
imposed by any federal, state, local, or foreign taxing authority, including without limitation, income, gross receipts, excise, real or personal property, sales, occupation, use, service, leasing, environmental, value added, transfer, payroll, and
franchise taxes (and including any interest, penalties, or additions to tax attributable to or imposed on with respect to any such assessment). 

(lll) “Trading Day” shall mean a day on which trading in the Common Stock generally occurs on the NASDAQ Global Market. 

(mmm) “VWAP” shall mean the volume-weighted, average trading price of the Company’s Common Stock on the NASDAQ Global
Market during a specified period, calculated by dividing the total value by the total volume of securities traded. 
 [Signature Pages
Follow] 

  
 42 

 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date first above
written. 
  

					
	GEVO, INC.	 	
			
	By:	 	/s/ Mike Willis	 	
	Name: Mike Willis	 	
	Title:	 	Chief Financial Officer
		
	GEVO DEVELOPMENT, LLC	 	
			
	By:	 	/s/ Mike Willis	 	
	Name: Mike Willis	 	
	Title:	 	Chief Financial Officer
		
	AGRI-ENERGY, LLC	 	
			
	By:	 	/s/ Mike Willis	 	
	Name: Mike Willis	 	
	Title: Chief Financial Officer	 	

 [Additional Signature Pages Follow] 

  
 43 

 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date first above
written. 
  

					
	WB GEVO, LTD.	  	
			
	By:	 	/s/ Mark Strefling	  	
	Name: Mark Strefling	  	
	Title: Director	  	
		
	WHITEBOX ADVISORS LLC, as Administrative Agent	  	
			
	By:	 	/s/ Mark Strefling	  	
	Name: Mark Strefling	  	
	Title: Chief Operating Officer	  	
		
	WHITEBOX ADVISORS LLC, as Representative	  	
			
	By:	 	/s/ Mark Strefling	  	
	Name: Mark Strefling	  	
	Title: Chief Operating Officer	  	

  
 44 

 EXHIBIT A 

FORM OF GUARANTOR JOINDER AGREEMENT 

This GUARANTOR JOINDER AGREEMENT to the Exchange and Purchase Agreement (the “Joinder Agreement”) is made and entered into as
of                     by and among Gevo, Inc., a Delaware corporation (the “Company”),
                    (“Whitebox”), and the undersigned (the “Joining Party”), and related to that certain Exchange
and Purchase Agreement dated as of         , 2014 (as amended from time to time, the “Purchase Agreement”), by and between the Company, Gevo Development, LLC, a
                    limited liability company (“Gevo LLC”) and Agri-Energy, LLC, a
                    limited liability company (“AE LLC,” and collectively with the Company and Gevo LLC, the “Company
Parties”), Whitebox, Whitebox Advisors LLC, in its capacity as administrative agent under the Loan Agreement (the “Administrative Agent”), and Whitebox Advisors LLC, in its capacity as representative of the Purchaser under
the Purchase Agreement (the “Representative”). Capitalized terms used but not defined herein shall have the meanings ascribed to them in the Purchase Agreement. 

WHEREAS, the Joining Party is a guarantor under that certain Loan Agreement; and 

WHEREAS, the Joining Party has agreed to become a party to the Purchase Agreement on the terms set forth herein. 

NOW, THEREFORE, in consideration of the foregoing and other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, the parties hereto agrees as follows: 
 1. The Joining Party hereby acknowledges that it has received a copy of the
Purchase Agreement and all other documents it deems fit to enter into this Joinder Agreement, and acknowledges and agrees to (i) join and become a party to the Purchase Agreement as indicated by its signature below, (ii) be bound by all
covenants, agreements, representations, warranties, indemnities and acknowledgements attributable to the “Company Parties, as if the Joining Party was a party thereto as of the date of the Purchase Agreement; (iii) perform all obligations
and duties required and be entitled to all of the benefits of a “Company Party” pursuant to the Purchase Agreement and (iv) agree to be deemed a “Company Party” under the Purchase Agreement. 

2. The Joining Party hereby represents and warrants to the Company that it has all the requisite [corporate] power and authority to execute,
deliver and perform such Joining Party’s obligations under this Joinder Agreement. 
 3. The Company, on behalf of the Joining Party,
has provided the Representative with Updated Disclosure Schedules with any applicable disclosure necessary to make the representations and warranties set forth in the Agreement accurate and complete, as if such Additional Guarantor was a party to
the Agreement on the date of the Agreement. 

  
 A-1 

 4. This Joinder Agreement shall be binding upon and shall inure to the benefit of, and be
enforceable by, the parties to the Purchase Agreement and the Joining Party and their respective heirs, representatives, successors and assigns. 

5. This Joinder Agreement may be signed in one or more counterparts (which may be delivered in original form or in electronic format), each of
which shall constitute an original when so executed and delivered and all of which together shall constitute one and the same agreement. 

6. No amendment or waiver of any provision of this Joinder Agreement, nor any consent or approval to any departure therefrom, shall in any
event be effective unless the same shall be in writing signed by the Company, the Representative and the holders of a majority of the aggregate amount of the Senior Loan and/or Notes outstanding. 

7. The validity and interpretations of this Joinder Agreement, and the terms and conditions set forth herein, shall be governed by and
construed in accordance with the laws of the State of New York. 
 [Signatures on Next Page] 

  
 A-2 

 IN WITNESS WHEREOF, the undersigned has executed and delivered this Joinder Agreement as of the
date written below. 
  

					
	Date:                                     
                                         
                                 	 		  	
			
	JOINING PARTY:	 		  	COMPANY PARTIES:
			
	  
	 		  	Acknowledged and accepted:
			
	
By:                         
                                         
                                         
       
 Name:

Title
	 		  	 GEVO, INC.
  

By:                        
                                         
                                         
   
 Name:
 Title

 
 GEVO DEVELOPMENT, LLC

 

By:                        
                                         
                                         
   
 Name:
 Title

 
 AGRI-ENERGY, LLC

 

By:                        
                                         
                                         
   
 Name:
 Title

 
 WHITEBOX:

 
 Acknowledged and accepted:

		 		  	  

[                          
      ]
  

By:                        
                                         
                                         
   
 Name:
 Title

  
 A-3 

 EXHIBIT B 

FORM OF PURCHASER JOINDER AGREEMENT 

This PURCHASER JOINDER AGREEMENT to the Exchange and Purchase Agreement (the “Joinder Agreement”) is made and entered into as
of                     by and among Gevo, Inc., a Delaware corporation (the “Company”),
                    (“Whitebox”), and the undersigned (the “Joining Party”), and related to that certain Exchange
and Purchase Agreement dated as of         , 2014 (as amended from time to time, the “Purchase Agreement”), by and between the Company, Gevo Development, LLC, a
                    limited liability company (“Gevo LLC”), Agri-Energy, LLC, a
                    limited liability company (“AE LLC”), the Additional Guarantors (collectively with the Company, Gevo LLC, AE LLC
and the Additional Guarantors, the “Company Parties”), Whitebox, Whitebox Advisors LLC, in its capacity as administrative agent under the Loan Agreement (the “Administrative Agent”), and Whitebox Advisors LLC, in
its capacity as representative of the Purchaser under the Purchase Agreement (the “Representative”). Capitalized terms used but not defined herein shall have the meanings ascribed to them in the Purchase Agreement. 

WHEREAS, the Joining Party is acquiring the Company’s 10.0% Convertible Senior Secured Notes due 2017 (the “Convertible
Notes”); and 
 WHEREAS, the Joining Party has agreed to become a party to the Purchase Agreement on the terms set forth
herein. 
 NOW, THEREFORE, in consideration of the foregoing and other good and valuable consideration, the receipt and sufficiency
of which are hereby acknowledged, the parties hereto agrees as follows: 
 1. The Joining Party hereby acknowledges that it has received a
copy of the Purchase Agreement and all other documents it deems fit to enter into this Joinder Agreement, and acknowledges and agrees to (i) join and become a party to the Purchase Agreement as indicated by its signature below, (ii) be
bound by all covenants, agreements, representations, warranties, indemnities and acknowledgements attributable to the “Lender” or “Purchaser,” as the case may be, as if the Joining Party was a party thereto as of the date of the
Purchase Agreement; (iii) perform all obligations and duties required and be entitled to all of the benefits of a “Lender” or “Purchaser” pursuant to the Purchase Agreement and (iv) be deemed a “Lender” or
“Purchaser,” as the case may be, under the Purchase Agreement. 
 2. Notwithstanding anything herein to the contrary, the Joining
Party shall not be considered a “Purchaser” for purposes of, and shall have no right to participate in, any purchase of Option Notes pursuant to Section 1.5 of the Purchase Agreement (the “Additional Purchase”), and
any rights, obligations, covenants, representations or warranties of any party to the Purchase Agreement in connection with such Additional Purchase shall not apply to the Joining Party. 

  
 B-1 

 3. The Joining Party hereby represents and warrants to the Company that it has all the requisite
[corporate] power and authority to execute, deliver and perform such Joining Party’s obligations under this Joinder Agreement. 
 4.
This Joinder Agreement shall be binding upon and shall inure to the benefit of, and be enforceable by, the parties to the Purchase Agreement and the Joining Party and their respective heirs, representatives, successors and assigns. 

5. This Joinder Agreement may be signed in one or more counterparts (which may be delivered in original form or in electronic format), each of
which shall constitute an original when so executed and delivered and all of which together shall constitute one and the same agreement. 

6. No amendment or waiver of any provision of this Joinder Agreement, nor any consent or approval to any departure therefrom, shall in any
event be effective unless the same shall be in writing signed by the Company, the Representative and the holders of a majority of the aggregate amount of the Senior Loan and/or Notes outstanding. 

7. The validity and interpretations of this Joinder Agreement, and the terms and conditions set forth herein, shall be governed by and
construed in accordance with the laws of the State of New York. 
 [Signatures on Next Page] 

  
 B-2 

 IN WITNESS WHEREOF, the undersigned has executed and delivered this Joinder Agreement as of the
date written below. 
  

					
	Date:                                     
                                         
                                 	 		 	
			
	JOINING PARTY:	 		 	COMPANY PARTIES:
			
	 Print
Name:                                       
                                         
                  
  

Signature:                       
                                         
                                      

 

Address:                       
                                         
                                        

 

                         
                                         
                                         
            
  

                         
                                         
                                         
            
  

Telephone:                        
                                         
                                   

 

Facsimile:                       
                                         
                                     

 

E-mail:                       
                                         
                                         
  
  
 Aggregate Principal Amount of Senior Loan Held by Such

Lender:                       
                                         
                                         
 
  
 Aggregate Principal Amount of Notes Held by Such

Purchaser:                        
                                         
                                    
	 		 	 Acknowledged and accepted:
  

GEVO, INC.
  

By:                        
                                         
                                         
        
 Name:

Title
  

GEVO DEVELOPMENT, LLC
  

By:                         
                                         
                                         
       
 Name:

Title
  

AGRI-ENERGY, LLC
  

By:                        
                                         
                                         
        
 Name:

Title
  

WHITEBOX:
  

Acknowledged and accepted:

		 		 	  

[                          
      ]
  

By:                        
                                         
                                         
        
 Name:

Title

  
 B-3 

 EXHIBIT C 

FORM OF NOTE 
 THE TRANSFER OF ALL
OR ANY PORTION OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT IS SUBJECT TO THE RESTRICTIONS AND CONDITIONS SPECIFIED IN AN EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER. ANY TRANSFER OF THE SECURITIES
REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT THAT IS NOT MADE IN COMPLIANCE WITH THE RESTRICTIONS AND CONDITIONS SET FORTH IN THE EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER SHALL BE ABSOLUTELY VOID AB INITIO. A COPY
OF SUCH EXCHANGE AND PURCHASE AGREEMENT WILL BE FURNISHED WITHOUT CHARGE BY THE ISSUER TO THE HOLDER HEREOF UPON WRITTEN REQUEST. 
 THE SECURITIES
REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO A PARI PASSU INTERCREDITOR AGREEMENT AMONG THE ISSUER, THE INITIAL PURCHASER AND CERTAIN OTHER PARTIES. A COPY OF SUCH PARI PASSU INTERCREDITOR AGREEMENT WILL BE FURNISHED WITHOUT CHARGE BY THE ISSUER
TO THE HOLDER HEREOF UPON WRITTEN REQUEST. 
 THIS NOTE IS ISSUED WITH ORIGINAL ISSUE DISCOUNT FOR PURPOSES OF SECTION 1271 ET SEQ. OF THE INTERNAL REVENUE
CODE. A HOLDER MAY OBTAIN THE ISSUE PRICE, AMOUNT OF ORIGINAL ISSUE DISCOUNT, ISSUE DATE AND YIELD TO MATURITY FOR THE NOTES BY SUBMITTING A WRITTEN REQUEST FOR SUCH INFORMATION TO THE COMPANY AT THE FOLLOWING ADDRESS:
[                                         
                                       ],
ATTENTION: CHIEF FINANCIAL OFFICER. 
 [Include the following legend for Global Notes only (the “Global Notes Legend”):] 

[THIS NOTE IS A GLOBAL NOTE WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY OR A
NOMINEE THEREOF. THIS NOTE MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A NOTE REGISTERED, AND NO TRANSFER OF THIS NOTE IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITORY OR A NOMINEE THEREOF, EXCEPT IN THE
LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. 
 UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY
TRUST COMPANY (“DTC”), A NEW YORK CORPORATION, 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 IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN 

  
 C-1 

 
AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL IN AS MUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO.,
HAS AN INTEREST HEREIN. 
 THE TRANSFER OF ALL OR ANY PORTION OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT IS SUBJECT TO
THE RESTRICTIONS AND CONDITIONS SPECIFIED IN AN EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER. ANY TRANSFER OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT THAT IS NOT MADE IN COMPLIANCE WITH THE
RESTRICTIONS AND CONDITIONS SET FORTH IN THE EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER SHALL BE ABSOLUTELY VOID AB INITIO. A COPY OF SUCH EXCHANGE AND PURCHASE AGREEMENT WILL BE FURNISHED WITHOUT CHARGE BY THE ISSUER
TO THE HOLDER HEREOF UPON WRITTEN REQUEST.] 
 [Include the following legend on all Notes that are Restricted Notes (the “Restricted Notes
Legend”):] 
 [THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES
ACT”), OR ANY STATE SECURITIES LAWS. NEITHER THIS NOTE NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH
TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, REGISTRATION. 
 THE HOLDER OF THIS NOTE, BY ITS ACCEPTANCE HEREOF (1) REPRESENTS THAT
(A) IT IS A “QUALIFIED INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) (A “QIB”) OR (B) IT IS NOT A U.S. PERSON, IS NOT ACQUIRING THIS SECURITY FOR THE ACCOUNT OR BENEFIT OF A U.S. PERSON AND IS
ACQUIRING THIS SECURITY IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH REGULATION S UNDER THE SECURITIES ACT AND (2) AGREES THAT IT WILL NOT, WITHIN THE TIME PERIOD REFERRED TO UNDER RULE 144(d)(1) (TAKING INTO ACCOUNT THE PROVISIONS OF RULE
144(d) UNDER THE SECURITIES ACT, IF APPLICABLE) UNDER THE SECURITIES ACT AS IN EFFECT ON THE DATE OF THE TRANSFER OF THIS SECURITY, OFFER, RESELL OR OTHERWISE TRANSFER THIS SECURITY EXCEPT (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF,
(B) TO A PERSON WHOM THE HOLDER REASONABLY BELIEVES IS A QIB PURCHASING FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QIB IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT OR AN AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE
SECURITIES ACT, (C) OUTSIDE THE UNITED STATES IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE 904 UNDER THE SECURITIES ACT, (D) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE AND
PROVIDED THAT PRIOR TO SUCH TRANSFER, THE TRUSTEE IS FURNISHED WITH AN OPINION OF COUNSEL 

  
 C-2 

 
ACCEPTABLE TO THE COMPANY THAT SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT) OR (E) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT AND, IN EACH CASE, IN
ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS, AND (3) AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THIS SECURITY OR AN INTEREST HEREIN IS TRANSFERRED (OTHER THAN A TRANSFER PURSUANT TO CLAUSE (2)(D) ABOVE) A NOTICE SUBSTANTIALLY
TO THE EFFECT OF THIS LEGEND. 
 IN CONNECTION WITH ANY TRANSFER OF THIS SECURITY OR ANY INTEREST HEREIN WITHIN THE TIME PERIOD REFERRED TO
ABOVE, THE HOLDER MUST CHECK THE APPROPRIATE BOX SET FORTH ON THE REVERSE HEREOF RELATING TO THE MANNER OF SUCH TRANSFER AND SUBMIT THIS CERTIFICATE TO THE TRUSTEE. AS USED HEREIN, THE TERMS “OFFSHORE TRANSACTION,” “UNITED
STATES” AND “U.S. PERSON” HAVE THE MEANINGS GIVEN TO THEM BY RULE 902 OF REGULATION S UNDER THE SECURITIES ACT. 
 THE
TRANSFER OF ALL OR ANY PORTION OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT IS SUBJECT TO THE RESTRICTIONS AND CONDITIONS SPECIFIED IN AN EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER. ANY TRANSFER OF
THE SECURITIES REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT THAT IS NOT MADE IN COMPLIANCE WITH THE RESTRICTIONS AND CONDITIONS SET FORTH IN THE EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER SHALL BE ABSOLUTELY VOID AB
INITIO. A COPY OF SUCH EXCHANGE AND PURCHASE AGREEMENT WILL BE FURNISHED WITHOUT CHARGE BY THE ISSUER TO THE HOLDER HEREOF UPON WRITTEN REQUEST.] 

[Include the following legend on all Notes that are issued pursuant to Regulation S (the “Regulation S Temporary Global Note
Legend”):] 
 [THE RIGHTS ATTACHING TO THIS REGULATION S TEMPORARY GLOBAL NOTE, AND THE CONDITIONS AND PROCEDURES
GOVERNING ITS EXCHANGE FOR DEFINITIVE NOTES, ARE AS SPECIFIED IN THE INDENTURE. THE HOLDER OF THIS NOTE BY ACCEPTANCE HEREOF ALSO AGREES, REPRESENTS AND WARRANTS THAT IF IT IS A PURCHASER IN A SALE THAT OCCURS OUTSIDE THE UNITED STATES WITHIN THE
MEANING OF REGULATION S OF THE SECURITIES ACT, IT ACKNOWLEDGES THAT, UNTIL EXPIRATION OF THE “40-DAY DISTRIBUTION COMPLIANCE PERIOD” WITHIN THE MEANING OF RULE 903 OF REGULATION S, ANY OFFER OR SALE OF THIS NOTE SHALL NOT BE MADE BY IT TO
A U.S. PERSON TO OR FOR THE ACCOUNT OR BENEFIT OF A U.S. PERSON WITHIN THE MEANING OF RULE 902(k) UNDER THE SECURITIES ACT.] 

  
 C-3 

 [To be attached to Global Securities] 

SCHEDULE OF INCREASES OR DECREASES IN GLOBAL SECURITY 

The initial principal amount of this Global Security is $            . The following increases or
decreases in this Global Security have been made: 
  

									
	 Date of

Exchange
	  	Amount of
decrease in
Principal
Amount
of this Global
Security	  	Amount of
increase in
Principal
Amount
of this Global
Security	  	Principal amount
of this Global
Security
following
such decrease or
increase	  	Signature of
authorized
signatory of
Trustee or
Securities
Custodian
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	

 GEVO, INC. 

10.0% CONVERTIBLE SENIOR SECURED NOTES DUE 2017 
  

			
	No. [        ]	  	U.S. $[            ]

 [CUSIP
NO.                ] 

[ISIN                 ] 

Gevo, Inc., a company duly incorporated and validly existing under the laws of the state of Delaware in the United States of America (herein
called the “Company”)), for value received hereby promises to pay to [            ], or registered assigns, the principal sum of
[            ] UNITED STATES DOLLARS (U.S. $[            ]) (which, in the case of a Global Note, amount may from time to time be
increased or decreased by adjustments made on the records of the Trustee, as Custodian for the Depository, in accordance with the rules and procedures of the Depository and in accordance with the below referred Indenture) on the Maturity Date. The
Principal Amount of Physical Notes and interest thereon, as provided on the reverse hereof, shall be payable at the Corporate Trust Office of the Paying Agent and at any other office or agency maintained by the Company for such purpose, upon
surrender of such Physical Notes. The Paying Agent will pay the principal amount of any Global Note and interest thereon, as provided on the reverse hereof, in immediately available funds to The Depository Trust Company or its nominee, as the case
may be, as the registered holder of such Global Note, on each Interest Payment Date, Fundamental Change Purchase Date or other payment date, as the case may be. PIK Interest shall be considered paid on the applicable Interest Payment Date. The
Company shall direct the Trustee on or prior to such date to either issue PIK Notes or increase the Principal Amount of this Note on such date, in either case in amount equal to the amount of the accrued PIK Interest. 

Reference is made to the further provisions of this Note set forth on the reverse hereof, including, without limitation, provisions giving the
Holder the right to convert this Note into 

  
 C-4 

 
shares of Common Stock of the Company and to the ability and obligation of the Company to purchase this Note upon certain events, in each case, on the terms and subject to the limitations
referred to on the reverse hereof and as more fully specified in the Indenture. Such further provisions shall for all purposes have the same effect as though fully set forth at this place. Capitalized terms used but not defined herein shall have
such meanings as are ascribed to such terms in the Indenture. In the case of any conflict between this Note and the Indenture, the provisions of the Indenture shall control. 

This Note shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall have been manually
signed by the Trustee or a duly authorized authenticating agent under the Indenture. 
 IN WITNESS WHEREOF, the Company has caused this
instrument to be duly executed. 
  

			
	GEVO, INC.
		
	By:	 	  

	Name:	 	  

	Title:	 	  

  
 C-5 

 GEVO, INC. 

10.0% Convertible Senior Secured Notes due 2017 

This Note is one of a duly authorized issue of Notes of the Company, designated as its 10.0% Convertible Senior Secured Notes due 2017 (the
“Notes”), issued or to be issued under and pursuant to an Indenture dated as of             , 2014 (the “Indenture”) among the Company, the
guarantors named on the signature pages thereof (the “Guarantors”), and Wilmington Savings Fund Society, FSB, as Trustee (the “Trustee”), to which 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, the Guarantors and the Holders of the Notes. The Indenture provides that Additional Notes may be issued
thereunder, if certain conditions are met. 
 (1) Interest. The Notes will bear interest at a rate of 10.0% per year. Pursuant
to Section 9.03 of the Indenture, in certain circumstances, the Holders of Notes shall be entitled to receive Additional Interest. Interest on the Notes will accrue from, and including, the Issue Date, or from the most recent date to which
interest has been paid or duly provided for. Interest will be payable quarterly in arrears on each Interest Payment Date, beginning with the first Interest Payment Date which occurs after the Issue Date, in cash; provided, that if no Event of
Default has occurred and is continuing under the Notes and the Last Reported Sale Price of the Common Stock on the 10th Trading Day immediately preceding the relevant Interest Payment Date is more
than $1.10 per share (as adjusted for stock splits, combinations, stock dividends and the like), then 50% of the interest will be payable on such Interest Payment Date in cash, and 50% of the interest will be payable on such Interest Payment Date,
either (i) by increasing the Principal Amount of the Notes or (ii) by issuing PIK Notes (“PIK Interest”), at the Company’s option. PIK Interest on the Notes will be payable by increasing the Principal Amount of the
Notes by an amount equal to the amount of PIK Interest for the applicable interest period (rounded up to the nearest whole dollar) (or, if necessary, pursuant to the requirements of The Depository Trust Company or its nominee, as the case, to
authenticate new Global Notes executed by the Company with such increased Principal Amount of the Notes). Following an increase in the Principal Amount of the Notes as a result of a PIK Payment, the Notes will bear interest on such increased
Principal Amount from and after the date of such PIK Payment. 
 Interest will be paid to the Person in whose name a Note is registered at
the Close of Business on the March 15, June 15, September 15 and December 15 (whether or not such date is a Business Day), as the case may be, immediately preceding the relevant Interest Payment Date. Interest on the
Notes will be computed on the basis of a 360-day year composed of twelve 30-day months. 
 (2) Ranking and Security. The Notes are
secured, equally and ratably, by a senior security in the Collateral pursuant to the Security Agreement and the Security Documents referred to in the Indenture. The Notes are secured by a pledge of Collateral pursuant to the Security Documents and
shall be subject to the Intercreditor Agreement referred to in the Indenture. 

  
 C-6 

 (3) Guarantees. The payment by the Company of the principal of, interest and Additional
Interest, if any, on the Notes is fully and unconditionally guaranteed on a joint and several senior secured basis by each of the Guarantors to the extent set forth in the Indenture. 

(4) No Optional Redemption. The Notes are not redeemable at the option of the Company prior to their stated maturity date. No sinking
fund is provided for the Notes. 
 (5) Purchase at the Option of the Holder Upon a Fundamental Change. Subject to the terms and
conditions of the Indenture, the Company shall become obligated, at the option of the Holder, to repurchase the Notes if a Fundamental Change occurs at any time prior to the Maturity Date at (i) 100% of the Principal Amount together, plus
(ii) accrued and unpaid interest to, but excluding, the Fundamental Change Purchase Date (including but not limited to any outstanding accrued but not yet capitalized PIK Interest and all outstanding capitalized PIK Interest), plus
(iii) the Fundamental Change Make-Whole Payment, which aggregate amount will be paid in cash. 
 (6) Withdrawal of Fundamental
Change Purchase Notice. Holders have the right to withdraw, in whole or in part, any Fundamental Change Purchase Notice by delivering to the Paying Agent a written notice of withdrawal in accordance with the provisions of the Indenture. The
right to withdraw the Fundamental Change Purchase Notice will terminate at the Close of Business on the Business Day immediately preceding the relevant Fundamental Change Purchase Date. 

(7) Payment of Fundamental Change Purchase Price. If money sufficient to pay the Fundamental Change Purchase Price of all Notes or
portions thereof to be purchased on a Fundamental Change Purchase Date is deposited with the Paying Agent on the Fundamental Change Purchase Date, such Notes will cease to be outstanding and interest will cease to accrue on such Notes (or portions
thereof) immediately after the Close of Business on such Fundamental Change Purchase Date, and the Holder thereof shall have no other rights as such (other than the right to receive the Fundamental Change Purchase Price, upon surrender of such
Note). 
 (8) Conversion. Subject to and upon compliance with the provisions of the Indenture (including without limitation the
conditions of conversion of this Note set forth in Article 7 thereof), the Holder hereof has the right, at its option, to convert the Principal Amount hereof or any portion of such principal which is at least $1,000 into shares of Common Stock at
the Applicable Conversion Rate. The Conversion Rate is initially 0.8633 shares of Common Stock per $1 Principal Amount of Notes (equivalent to an initial Conversion Price of approximately $1.1584), subject to adjustment in certain events described
in the Indenture. Upon conversion, the Company will deliver shares of Common Stock and the Voluntary Conversion Make-Whole Payment, all as set forth in the Indenture (which may be paid in cash or shares of Common Stock). No fractional shares will be
issued upon any conversion, but a payment in cash will be made, as provided in the Indenture, in respect of any fraction of a share which would otherwise be issuable upon the surrender of any Notes for conversion. Notes in respect of which a Holder
is exercising its right to require repurchase on a Fundamental Change Purchase Date may be converted only if such Holder withdraws the related election to exercise such right in accordance with the terms of the Indenture. Subject to and upon
compliance with the provisions of the 

  
 C-7 

 
Indenture (including without limitation the conditions of conversion of this Note set forth in Article 7 thereof), the Company may elect to require the Holder to convert some or all of the Notes
if a Conversion Event occurs. Upon such conversion, the Company will deliver shares of Common Stock and the Conversion Event Make-Whole Payment, all as set forth in the Indenture (which may be paid in cash or shares of Common Stock). 

In the event of a deposit or withdrawal of an interest in this Note, including an exchange, transfer, repurchase or conversion of this Note in
part only, the Trustee, as custodian of the Depository, shall make an adjustment on its records to reflect such deposit or withdrawal in accordance with the rules and procedures of the Depository. 

(9) Acceleration of Maturity. Subject to certain exceptions in the Indenture, if an Event of Default shall occur and be continuing, the
Principal Amount plus interest through such date on all the Notes may be declared due and payable in the manner and with the effect provided in the Indenture. 

(10) Supplemental Indentures with Consent of Holders; Waiver of Past Defaults. The Indenture permits, with certain exceptions as
therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Notes under the Indenture at any time by the Company, the Guarantors and the Trustee with the consent of
the Requisite Holders. The Indenture also contains provisions permitting the Holders of specified percentages in aggregate Principal Amount of the outstanding Notes, on behalf of the Holders of all the Notes, to waive compliance by the Company with
certain provisions of the Indenture and certain past Defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of any provision of or applicable to this Note shall be conclusive and binding upon such Holder and
upon all future Holders of this Note and of any Note issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Note. 

(11) Registration of Transfer and Exchange. As provided in the Indenture and subject to certain limitations therein set forth, the
transfer of this Note is registrable in the Register, upon surrender of this Note for registration of transfer at the office or agency of the Company in the United States, duly endorsed by, or accompanied by a written instrument of transfer in form
satisfactory to the Company and the Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Notes, of authorized denominations and for the same aggregate Principal Amount, will be
issued to the designated transferee or transferees. 
 No service charge shall be made for any such registration of transfer or exchange,
but the Company and the Registrar may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith. 

Prior to due presentment of this Note for registration of transfer, the Company, the Guarantors, the Trustee and the Registrar and any agent
of the Company, the Guarantors or the Trustee may treat the Person in whose name this Note is registered as the owner hereof for all purposes, whether or not this Note be overdue, and neither the Company, the Trustee nor any such agent shall be
affected by notice to the contrary. 

  
 C-8 

 (12) Denominations. The Notes are issuable only in registered form in minimum
denominations of $1,000, and any PIK Notes in minimum denominations of $1.00, as provided in the Indenture and subject to certain limitations therein set forth. Notes are exchangeable for a like aggregate Principal Amount of Notes of a different
authorized denomination, as requested by the Holder surrendering the same. 
 (13) CUSIP Numbers. Pursuant to a recommendation
promulgated by the Committee on Uniform Note Identification Procedures, the Company has caused CUSIP numbers to be printed on the Notes and has directed the Trustee to use CUSIP numbers in notices of redemption as a convenience to Holders of Notes.
No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed herein. 

This Note shall be governed by and construed in accordance with the laws of the State of New York. 

All terms used in this Note that are defined in the Indenture shall have the meanings assigned to them in the Indenture. 

  
 C-9 

 EXHIBIT D 

FORM OF INDENTURE 
  

 
  

GEVO, INC. 
 as Issuer 

AND 
 THE GUARANTORS NAMED ON THE
SIGNATURE PAGE HEREOF 
 as Guarantors 

AND 
 WILMINGTON SAVINGS FUND
SOCIETY, FSB, 
 as Trustee and as Collateral Trustee 

Indenture 
 Dated as of
            , 2014 
 10.0% Convertible Senior Secured Notes due 2017 

 
  

 TABLE OF CONTENTS 
  

							
	 	 	 	  	Page	 
	ARTICLE 1 DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION	  	 	D-1	  
			
	 Section 1.01
	 	Definitions	  	 	D-1	  
	 Section 1.02
	 	Compliance Certificates and Opinions	  	 	D-30	  
	 Section 1.03
	 	Form of Documents Delivered to Trustee	  	 	D-31	  
	 Section 1.04
	 	Acts of Holders; Record Dates	  	 	D-31	  
	 Section 1.05
	 	Accounting Terms; Changes in GAAP	  	 	D-32	  
	 Section 1.06
	 	Notice to Holders; Waiver	  	 	D-33	  
	 Section 1.07
	 	Incorporation by Reference of Trust Indenture Act	  	 	D-33	  
	 Section 1.08
	 	Benefits of Indenture	  	 	D-33	  
		
	ARTICLE 2 SECURITY FORMS	  	 	D-34	  
			
	 Section 2.01
	 	Forms Generally	  	 	D-34	  
	 Section 2.02
	 	Form of Face of Note.	  	 	D-36	  
	 Section 2.03
	 	Form of Reverse of Note.	  	 	D-36	  
		
	ARTICLE 3 THE SECURITIES	  	 	D-36	  
			
	 Section 3.01
	 	Title and Terms; Payments	  	 	D-36	  
	 Section 3.02
	 	Ranking and Security	  	 	D-37	  
	 Section 3.03
	 	Denominations	  	 	D-37	  
	 Section 3.04
	 	Execution, Authentication, Delivery and Dating	  	 	D-37	  
	 Section 3.05
	 	Temporary Notes	  	 	D-38	  
	 Section 3.06
	 	Registration, Registrar and Paying Agent; Registration of Transfer and Exchange	  	 	D-38	  
	 Section 3.07
	 	Transfer Restrictions	  	 	D-40	  
	 Section 3.08
	 	Expiration of Restrictions	  	 	D-42	  
	 Section 3.09
	 	Mutilated, Destroyed, Lost and Stolen Notes	  	 	D-42	  
	 Section 3.10
	 	Persons Deemed Owners	  	 	D-43	  
	 Section 3.11
	 	Transfer and Exchange	  	 	D-44	  
	 Section 3.12
	 	Cancellation	  	 	D-48	  
	 Section 3.13
	 	CUSIP Numbers	  	 	D-48	  
	 Section 3.14
	 	Mandatory Redemption	  	 	D-48	  
		
	ARTICLE 4 COVENANTS	  	 	D-55	  
			
	 Section 4.01
	 	Payment of Principal and Interest; Interest Reserve	  	 	D-55	  
	 Section 4.02
	 	Maintenance of Office or Agency	  	 	D-56	  
	 Section 4.03
	 	Appointments to Fill Vacancies in Trustee’s Office	  	 	D-57	  
	 Section 4.04
	 	Provisions as to Paying Agent	  	 	D-57	  
	 Section 4.05
	 	Maintenance of Insurance	  	 	D-58	  

  
 D-i 

							
	 	 	 	  	Page	 
	 Section 4.06
	 	Preservation of Corporate Existence, Etc.	  	 	D-60	  
	 Section 4.07
	 	Payment of Taxes, Etc.	  	 	D-61	  
	 Section 4.08
	 	[Reserved]	  	 	D-61	  
	 Section 4.09
	 	Resale of Certain Notes	  	 	D-61	  
	 Section 4.10
	 	Maintenance of Records; Visitation Rights	  	 	D-61	  
	 Section 4.11
	 	Reporting Requirements	  	 	D-62	  
	 Section 4.12
	 	Additional Interest	  	 	D-67	  
	 Section 4.13
	 	Stay; Extension and Usury Laws	  	 	D-67	  
	 Section 4.14
	 	[Reserved]	  	 	D-67	  
	 Section 4.15
	 	[Reserved]	  	 	D-67	  
	 Section 4.16
	 	Maintenance of Property	  	 	D-68	  
	 Section 4.17
	 	Agreement to Pledge	  	 	D-68	  
	 Section 4.18
	 	Use of Proceeds	  	 	D-69	  
	 Section 4.19
	 	Title Evidence and Opinions	  	 	D-69	  
	 Section 4.20
	 	Further Assurances; Cure of Title Defects	  	 	D-69	  
	 Section 4.21
	 	Additional Collateral; Additional Guarantors	  	 	D-70	  
	 Section 4.22
	 	Leases, Development and Maintenance	  	 	D-71	  
	 Section 4.23
	 	Litigation and Other Notices	  	 	D-71	  
	 Section 4.24
	 	Employee Benefits	  	 	D-71	  
	 Section 4.25
	 	Compliance with Environmental Laws	  	 	D-72	  
	 Section 4.26
	 	Information Regarding Collateral	  	 	D-73	  
	 Section 4.27
	 	Approvals	  	 	D-73	  
	 Section 4.28
	 	Conditions Subsequent	  	 	D-73	  
	 Section 4.29
	 	Liens, Etc.	  	 	D-74	  
	 Section 4.30
	 	Indebtedness, Guarantees, and Other Obligations	  	 	D-77	  
	 Section 4.31
	 	Agreements Restricting Liens	  	 	D-79	  
	 Section 4.32
	 	Merger or Consolidation; Asset Sales	  	 	D-80	  
	 Section 4.33
	 	Restricted Payments	  	 	D-83	  
	 Section 4.34
	 	Transactions with Affiliates	  	 	D-85	  
	 Section 4.35
	 	Investments	  	 	D-86	  
	 Section 4.36
	 	Compliance with ERISA	  	 	D-88	  
	 Section 4.37
	 	Sale-and-Leaseback	  	 	D-88	  
	 Section 4.38
	 	Change of Business; Accounting Change	  	 	D-88	  
	 Section 4.39
	 	Organizational Documents, Other Documents	  	 	D-89	  
	 Section 4.40
	 	Use of Proceeds	  	 	D-89	  
	 Section 4.41
	 	Additional Subsidiaries	  	 	D-90	  
	 Section 4.42
	 	Schedules	  	 	D-91	  
	 Section 4.43
	 	Anti-Terrorism; Anti-Money Laundering	  	 	D-91	  
	 Section 4.44
	 	Embargoed Person	  	 	D-91	  
	 Section 4.45
	 	Optional Prepayments of Debt	  	 	D-92	  
	 Section 4.46
	 	Deposit Accounts	  	 	D-92	  
	 Section 4.47
	 	Unrestricted Subsidiaries	  	 	D-92	  
	 Section 4.48
	 	Limitation on Certain Restrictions on Subsidiaries	  	 	D-94	  
		
	ARTICLE 5 COLLATERAL AND SECURITY	  	 	D-95	  
			
	 Section 5.01
	 	Collateral and Security Documents	  	 	D-95	  

  
 D-ii 

							
	 	 	 	  	Page	 
	 Section 5.02
	 	Authorization of Actions to Be Taken	  	 	D-96	  
	 Section 5.03
	 	Application of Proceeds of Collateral	  	 	D-98	  
	 Section 5.04
	 	[Reserved]	  	 	D-98	  
	 Section 5.05
	 	Trust Indenture Act Requirements; Opinion of Counsel; Certificates of the Company	  	 	D-98	  
	 Section 5.06
	 	Further Assurances.	  	 	D-99	  
	 Section 5.07
	 	Release of Collateral.	  	 	D-99	  
		
	ARTICLE 6 PAYMENTS FREE OF TAXES, ETC.	  	 	D-100	  
			
	 Section 6.01
	 	Withholding	  	 	D-100	  
	 Section 6.02
	 	Other Taxes	  	 	D-100	  
	 Section 6.03
	 	Indemnification	  	 	D-101	  
	 Section 6.04
	 	Evidence of Payment	  	 	D-101	  
	 Section 6.05
	 	Forms	  	 	D-101	  
	 Section 6.06
	 	Refunds	  	 	D-102	  
	 Section 6.07
	 	FATCA	  	 	D-102	  
	 Section 6.08
	 	Survival	  	 	D-102	  
		
	ARTICLE 7 CONVERSION	  	 	D-102	  
			
	 Section 7.01
	 	Right to Convert	  	 	D-102	  
	 Section 7.02
	 	Conversion Procedure	  	 	D-105	  
	 Section 7.03
	 	Settlement upon Conversion	  	 	D-106	  
	 Section 7.04
	 	Adjustment of Conversion Rate	  	 	D-108	  
	 Section 7.05
	 	Effect of Reclassification, Consolidation, Merger or Sale	  	 	D-118	  
	 Section 7.06
	 	Adjustments of Prices	  	 	D-119	  
	 Section 7.07
	 	Company’s Conversion Option	  	 	D-119	  
	 Section 7.08
	 	Taxes on Shares Issued	  	 	D-121	  
	 Section 7.09
	 	Reservation of Shares; Shares to be Fully Paid; Compliance with Governmental Requirements	  	 	D-121	  
	 Section 7.10
	 	Responsibility of Trustee and Conversion Agent	  	 	D-122	  
	 Section 7.11
	 	Notice to Holders Prior to Certain Actions	  	 	D-123	  
	 Section 7.12
	 	Shareholder Rights Plan	  	 	D-123	  
	 Section 7.13
	 	Company Determination Final	  	 	D-124	  
		
	ARTICLE 8 PURCHASE AT OPTION OF HOLDERS UPON A FUNDAMENTAL CHANGE	  	 	D-124	  
			
	 Section 8.01
	 	Purchase at Option of Holders upon a Fundamental Change	  	 	D-124	  
	 Section 8.02
	 	Effect of Fundamental Change Purchase Notice	  	 	D-127	  
	 Section 8.03
	 	Withdrawal of Fundamental Change Purchase Notice	  	 	D-127	  
	 Section 8.04
	 	Deposit of Fundamental Change Purchase Price	  	 	D-128	  
	 Section 8.05
	 	Notes Purchased in Whole or in Part	  	 	D-128	  
	 Section 8.06
	 	Covenant to Comply With Securities Laws upon Purchase of Notes	  	 	D-128	  
	 Section 8.07
	 	Repayment to the Company	  	 	D-129	  
	 Section 8.08
	 	[Reserved]	  	 	D-129	  

  
 D-iii 

							
	 	 	 	  	Page	 
	ARTICLE 9 EVENTS OF DEFAULT; REMEDIES	  	 	D-129	  
			
	 Section 9.01
	 	Events of Default	  	 	D-129	  
	 Section 9.02
	 	Acceleration of Maturity: Waiver of Past Defaults and Rescission	  	 	D-131	  
	 Section 9.03
	 	Additional Interest	  	 	D-132	  
	 Section 9.04
	 	Collection of Indebtedness and Suits for Enforcement by Trustee	  	 	D-133	  
	 Section 9.05
	 	Trustee May File Proofs of Claim	  	 	D-133	  
	 Section 9.06
	 	Application of Money Collected	  	 	D-134	  
	 Section 9.07
	 	Limitation on Suits	  	 	D-134	  
	 Section 9.08
	 	Unconditional Right of Holders to Receive Payment	  	 	D-135	  
	 Section 9.09
	 	Restoration of Rights and Remedies	  	 	D-135	  
	 Section 9.10
	 	Rights and Remedies Cumulative	  	 	D-135	  
	 Section 9.11
	 	Delay or Omission Not Waiver	  	 	D-135	  
	 Section 9.12
	 	Control by Holders	  	 	D-135	  
	 Section 9.13
	 	Undertaking for Costs	  	 	D-136	  
	 Section 9.14
	 	[Reserved]	  	 	D-136	  
	 Section 9.15
	 	[Reserved]	  	 	D-136	  
		
	ARTICLE 10 RESERVED	  	 	D-136	  
		
	ARTICLE 11 THE TRUSTEE	  	 	D-136	  
			
	 Section 11.01
	 	Duties and Responsibilities of Trustee	  	 	D-136	  
	 Section 11.02
	 	Notice of Defaults	  	 	D-137	  
	 Section 11.03
	 	Reliance on Documents, Opinions, Etc.	  	 	D-138	  
	 Section 11.04
	 	No Responsibility for Recitals, Etc.	  	 	D-139	  
	 Section 11.05
	 	Trustee, Paying Agents, Conversion Agents or Registrar May Own Notes	  	 	D-139	  
	 Section 11.06
	 	Monies to be Held in Trust	  	 	D-139	  
	 Section 11.07
	 	Compensation and Expenses of Trustee	  	 	D-140	  
	 Section 11.08
	 	Officers’ Certificate as Evidence	  	 	D-140	  
	 Section 11.09
	 	Conflicting Interests of Trustee	  	 	D-141	  
	 Section 11.10
	 	Eligibility of Trustee	  	 	D-141	  
	 Section 11.11
	 	Resignation or Removal of Trustee	  	 	D-141	  
	 Section 11.12
	 	Acceptance by Successor Trustee	  	 	D-142	  
	 Section 11.13
	 	Succession by Merger, Etc.	  	 	D-143	  
	 Section 11.14
	 	Preferential Collection of Claims	  	 	D-143	  
	 Section 11.15
	 	Trustee’s Application for Instructions from the Company	  	 	D-143	  
	 Section 11.16
	 	Collateral Trustee	  	 	D-144	  
		
	ARTICLE 12 HOLDERS’ LISTS AND REPORTS BY TRUSTEE	  	 	D-144	  
			
	 Section 12.01
	 	Company to Furnish Trustee Names and Addresses of Holders	  	 	D-144	  
	 Section 12.02
	 	Preservation of Information; Communications to Holders	  	 	D-144	  
	 Section 12.03
	 	Reports By Trustee	  	 	D-145	  

  
 D-iv 

							
	 	 	 	  	Page	 
	ARTICLE 13 SATISFACTION AND DISCHARGE	  	 	D-145	  
			
	 Section 13.01
	 	Discharge of Indenture	  	 	D-145	  
	 Section 13.02
	 	Deposited Monies to be Held in Trust by Trustee	  	 	D-146	  
	 Section 13.03
	 	Paying Agent to Repay Monies Held	  	 	D-146	  
	 Section 13.04
	 	Return of Unclaimed Monies	  	 	D-146	  
	 Section 13.05
	 	Reinstatement	  	 	D-146	  
		
	ARTICLE 14 SUPPLEMENTAL INDENTURES	  	 	D-147	  
			
	 Section 14.01
	 	Supplemental Indentures without Consent of Holders	  	 	D-147	  
	 Section 14.02
	 	Supplemental Indentures with Consent of Holders	  	 	D-147	  
	 Section 14.03
	 	Execution of Supplemental Indentures	  	 	D-149	  
	 Section 14.04
	 	Effect of Supplemental Indentures	  	 	D-149	  
	 Section 14.05
	 	[Reserved]	  	 	D-149	  
	 Section 14.06
	 	Reference in Notes to Supplemental Indentures	  	 	D-149	  
	 Section 14.07
	 	Notice to Holders of Supplemental Indentures	  	 	D-149	  
		
	ARTICLE 15 GUARANTEES OF NOTES	  	 	D-149	  
	 Section 15.01
	 	Subsidiary Guarantees	  	 	D-149	  
	 Section 15.02
	 	[Reserved]	  	 	D-151	  
	 Section 15.03
	 	Releases of Subsidiary Guarantees	  	 	D-151	  
	 Section 15.04
	 	Instrument for the Payment of Money.	  	 	D-152	  
	 Section 15.05
	 	Limitation on Guarantor Liability	  	 	D-152	  
	 Section 15.06
	 	“Trustee” to Include Paying Agent	  	 	D-152	  
		
	ARTICLE 16 MISCELLANEOUS	  	 	D-152	  
	 Section 16.01
	 	[Reserved]	  	 	D-152	  
	 Section 16.02
	 	Notices to Parties Hereto	  	 	D-153	  
	 Section 16.03
	 	[Reserved]	  	 	D-153	  
	 Section 16.04
	 	When Notes Are Disregarded	  	 	D-153	  
	 Section 16.05
	 	Rules by Trustee, Paying Agent and Registrar	  	 	D-154	  
	 Section 16.06
	 	Legal Holidays	  	 	D-154	  
	 Section 16.07
	 	Governing Law	  	 	D-154	  
	 Section 16.08
	 	No Recourse against Others	  	 	D-154	  
	 Section 16.09
	 	Successors	  	 	D-154	  
	 Section 16.10
	 	Multiple Originals	  	 	D-154	  
	 Section 16.11
	 	[Reserved]	  	 	D-155	  
	 Section 16.12
	 	Table of Contents; Headings	  	 	D-155	  
	 Section 16.13
	 	Severability Clause	  	 	D-155	  
	 Section 16.14
	 	Calculations	  	 	D-155	  
	 Section 16.15
	 	Waiver of Jury Trial	  	 	D-155	  
	 Section 16.16
	 	Consent to Jurisdiction	  	 	D-155	  
	 Section 16.17
	 	Force Majeure	  	 	D-156	  
	 Section 16.18
	 	Confidentiality	  	 	D-156	  

  
 D-v 

 INDENTURE, dated as of
            , 2014, is among Gevo, Inc., a company duly incorporated and existing under the laws of Delaware, United States of America, and having its principal executive office at
345 Inverness Drive South, Building C, Suite 310, Englewood, CO 80112 as Issuer (the “Company”), the guarantors listed on the signature page hereof (each, a “Guarantor” and, collectively, the
“Guarantors”) and Wilmington Savings Fund Society, FSB, as Trustee (in such capacity, the “Trustee”) and as Collateral Trustee (in such capacity, the “Collateral Trustee”). 

RECITALS OF THE COMPANY AND GUARANTORS 

WHEREAS, the Company has duly authorized the creation of an issue of 10.0% Convertible Senior Secured Notes due 2017 (each a
“Note” and collectively, the “Notes”) of the tenor and amount hereinafter set forth, such Notes to be secured by a perfected senior security interest in the Collateral and guaranteed by the Guarantors on the terms
hereinafter set forth, and to provide therefor each of the Company and the Guarantors has duly authorized the execution and delivery of this Indenture; and 

WHEREAS, all things necessary to make the Notes, when duly issued, executed and delivered by the Company and duly authenticated by the
Trustee, the valid and legally binding obligations of the Company, and to make this Indenture and the Security Documents valid and legally binding agreements of the Company and the Guarantors, in accordance with the terms thereof, have been done.

 NOW, THEREFORE, THIS INDENTURE WITNESSETH, for and in consideration of the premises and the purchases of the Notes by the Holders
thereof, it is mutually agreed, by the parties thereto and for the equal and proportionate benefit of all Holders of the Notes, as follows: 

ARTICLE 1 
 DEFINITIONS
AND OTHER PROVISIONS OF GENERAL APPLICATION 
 Section 1.01 Definitions 

For all purposes of this Indenture, except as otherwise expressly provided or unless the context otherwise requires: 

(i) the terms defined in this Article 1 have the meanings assigned to them in this Article and include the plural as well as
the singular; 
 (ii) all accounting terms not otherwise defined herein have the meanings assigned to them in accordance with
GAAP; and 
 (iii) the words “herein,” “hereof” and “hereunder” and other words of similar
import refer to this Indenture as a whole and not to any particular Article, Section or other subdivision. 
 “2013 Warrant
Agreement” means the Common Stock Unit Warrant Agreement, dated December 16, 2013, by and between the Company and American Stock Transfer & Trust Company, LLC, acting as warrant agent, as amended, modified, supplemented or
restated from time to time. 

  
 D-1 

 “2013 Warrants” means the warrants issued by the Company from time to time
pursuant to the 2013 Warrant Agreement and all other documents, instruments and agreements evidencing or governing such warrants or providing for any other right in respect thereof, each as amended, modified, supplemented or restated from time to
time in accordance with the 2013 Warrant Agreement. 
 “4.99% Ownership Limitation” has the meaning specified in
Section 7.01(f). 
 “9.99% Ownership Limitation” has the meaning specified in Section 7.01(f). 

“19.99% Proposal” means the proposal on which the stockholders of the Company shall vote, at the meeting(s) called by the
Company as provided in the Purchase Agreement, to obtain Stockholder Approval for the issuance of shares of Common Stock representing more than 19.99% of the outstanding shares of Common Stock as of immediately prior to the Term Loan Closing Date
pursuant to this Indenture as a whole. 
 “Acceptable Security Interest” in any Property means a Lien which (a) exists
in favor of Collateral Trustee for the benefit of the Secured Parties, (b) is superior to all Liens or rights of any other Person (other than the Administrative Agent to the extent provided for in the Intercreditor Agreement) in the Property
encumbered thereby, other than certain of the Permitted Liens, (c) secures the Obligations, and (d) is perfected and enforceable. 

“Acquisition” means the purchase by any Credit Party of any business, including the purchase of all or substantially all the
associated assets or operations or of stock (or other ownership interests) of a Person (other than of a wholly-owned Subsidiary of any Credit Party). 

“Additional Interest” means all amounts, if any, payable pursuant to Section 9.03 hereof. Unless the context otherwise
requires, all references in this Indenture or the Notes to interest include Additional Interest, if any. Any express reference to Additional Interest in this Indenture or the Notes shall not be construed as excluding Additional Interest in any other
text where no such express reference is made. 
 “Additional Notes” means any Notes (other than the Initial Notes) issued
under this Indenture in accordance with Section 3.01 hereof, with the same terms as the Initial Notes, including but not limited to PIK Notes issued in respect of PIK Interest. 

“Administrative Agent” means [Whitebox Advisors LLC][WB Gevo Ltd.], in its capacity as agent under the Credit
Agreement pursuant to Article VIII of the Credit Agreement, and any successor agent pursuant to Section 8.9 of the Credit Agreement. 

“Affiliate” means, as to any Person, any other Person that, directly or indirectly, through one or more intermediaries,
Controls, is Controlled by, or is under Common Control with, such Person or any Subsidiary of such Person; provided, however that no Holder shall be deemed to be an Affiliate of any Credit Party or its Subsidiaries solely by virtue of its (or an
Affiliates of its) ownership of Equity Interests in the Company. 

  
 D-2 

 “Affiliated Parties” has the meaning specified in Section 7.01(e). 

“Agent Members” has the meaning specified in Section 3.06(b). 

“Anti-Terrorism Law” means any requirement of law related to terrorism financing or money-laundering including the Uniting
and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act (“Patriot Act”) of 2001 (Title III of Pub. L. 107-56), The Currency and Foreign Transactions Reporting Act (also known as the
“Bank Secrecy Act”, 31 U.S.C. §§ 5311-5330 and 12 U.S.C. §§ 1818(s), 1820(b) and 1951-1959), the Trading With the Enemy Act (50 U.S.C. § 1 et seq., as amended) and Executive Order 13224 (effective
September 24, 2001). 
 “Applicable Conversion Rate” means the Conversion Rate in effect at any given time. 

“Applicable Law” except as the context may otherwise require, means all applicable laws, rules, regulations, ordinances,
judgments, decrees, injunctions, writs and orders of any court or governmental or congressional agency or authority and rules, regulations, orders, licenses and permits of any United States federal, state, municipal, regional, or other governmental
body, instrumentality, agency or authority. 
 “Applicable Procedures” means, with respect to any transfer or transaction
involving a Global Note or any beneficial interest therein, the rules and procedures of the Depository for such Note, in each case to the extent applicable to such transfer or transaction and as in effect from time to time. 

“Authorized Shares Proposal” means the proposal on which the stockholders of the Company shall vote, at the meeting(s) called
by the Company as provided in the Purchase Agreement, to obtain Stockholder Approval for the increase in the total number of authorized shares of Common Stock of the Company to at least 250 million shares. 

“Bankruptcy Code” means Chapter 11 of title 11 of the United States Code. 

“Beneficial Ownership” has the meaning specified in Section 7.01(g). 

“Board of Directors” means, with respect to a corporation, either the board of directors of the corporation or any duly
authorized committee of that board, and with respect to any other Person, the board or committee of such Person serving a similar function. 

“Board Resolution” means, with respect to any Person, a copy of a resolution certified by the Secretary or an Assistant
Secretary or the General Counsel of such Person to have been duly adopted by the Board of Directors and to be in full force and effect on the date of such certification, and delivered to the Trustee. 

“Business Day” means any day other than a Saturday, Sunday or other day on which banks in New York City are authorized or
required by law to close. 

  
 D-3 

 “Capital Leases” means, as applied to any Person, any lease of any Property by
such Person as lessee which would, in accordance with GAAP, be required to be classified and accounted for as a capital lease on the balance sheet of such Person. 

“Capital Stock” means any and all shares, interests, participations, rights or other equivalents (however designated) of
corporate stock and, with respect to partnerships or limited liability companies, partnership interests (whether general or limited) or membership interests, as the case may be, and any other interest or participation that confers on a Person the
right to receive a share of the profits and losses of, or distributions of assets of, such partnership. 
 “Casualty Event”
means any loss of title or any loss of or damage to or destruction of, or any condemnation or other taking (including by any Governmental Authority) of, any property of any Credit Party. “Casualty Event” shall include but not be limited to
any taking of all or any part of any Real Property of any person or any part thereof, in or by condemnation or other eminent domain proceedings pursuant to any law, or by reason of the temporary requisition of the use or occupancy of all or any part
of any Real Property of any person or any part thereof by any Governmental Authority, civil or military, or any settlement in lieu thereof. 

“CERCLA” means the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended, state and local
analogs, and all rules and regulations and requirements thereunder in each case as now or hereafter in effect. 
 “Clause A
Distribution” has the meaning specified in Section 7.04(c). 
 “Clause B Distribution” has the meaning
specified in Section 7.04(c). 
 “Clause C Distribution” has the meaning specified in Section 7.04(c). 

“Close of Business” means 5:00 p.m. New York City time. 

“Closing Date” means [            ]. 

“Code” means the Internal Revenue Code of 1986, as amended, and any successor statute and the rules and regulations
promulgated thereunder. 
 “Collateral” means all Property and interests in Property and proceeds thereof now owned or
hereafter acquired by a Credit Party in or upon which a Lien is granted by such Person in favor of the Collateral Trustee, for the benefit of the Secured Parties, under any of the Equity Documents or Security Documents including without limitation,
all “Collateral” and “Mortgaged Properties” (as defined in each of the Mortgages and the Security Agreement, as applicable) or similar terms used in the Security Documents, provided that, in each case, Collateral shall not
include Excluded Property. 
 “Collateral Trustee” means the Person named as the “Collateral Trustee” in the
first paragraph of this Indenture until a successor Collateral Trustee shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Collateral Trustee” shall mean such successor Collateral Trustee. 

  
 D-4 

 “Commission” means the Securities and Exchange Commission, as from time to time
constituted, created under the Exchange Act. 
 “Common Stock” means the shares of common stock, $0.01 par value per share,
of the Company as they exist on the date of this Indenture, subject to the provisions of Section 7.05. 
 “Company”
means the Person named as the “Company” in the first paragraph of this instrument until a successor Person shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Company” shall mean such
successor Person. 
 “Company Conversion Date” has the meaning specified in Section 7.07(a). 

“Company Conversion Notice Date” has the meaning specified in Section 7.07(a). 

“Company Order” means a written request or order signed in the name of the Company (a) by its Chief Executive Officer,
its President, or its Chief Financial Officer or any of its Vice Presidents, and (b) by its Treasurer, any Assistant Treasurer, its Secretary, any Assistant Secretary or any of its Vice Presidents, and delivered to the Trustee. 

“Confidential Information” has the meaning assigned such term in Section 16.18. 

“Control” shall mean the possession, directly or indirectly, of the power to direct or cause the direction of the management
or policies of a person, whether through the ownership of Voting Securities, by contract or otherwise, and the terms “Controlling” and “Controlled” and “under Common Control” shall have meanings correlative thereto.

 “Controlled Group” means all members of a controlled group of corporations and all businesses (whether or not
incorporated) under common control which, together with the Company, are treated as a single employer under Section 414 of the Code. 

“Conversion Agent” means the Trustee or such other office or agency designated by the Company where Notes may be presented
for conversion. 
 “Conversion Date” has the meaning specified in Section 7.02(b). 

“Conversion Event” has the meaning specified in Section 7.07(a). 

“Conversion Event Company Notice” has the meaning specified in Section 7.07(a). 

“Conversion Event Make-Whole Payment” has the meaning specified in Section 7.07(a). 

“Conversion Notice” shall have the meaning specified in Section 7.02(b). 

“Conversion Price” means, per share of Common Stock, $1 divided by the Applicable Conversion Rate. 

“Conversion Rate” means initially 0.8633 shares of Common Stock per $1 Principal Amount of Notes, subject to adjustment as
set forth herein. 

  
 D-5 

 “Convertible Notes Pro Rata Share” means, as of any date of determination, the
fraction (expressed as a percentage), the numerator of which is the aggregate principal amount of the Notes then outstanding and the denominator of which is the sum of the aggregate amount of all outstanding Commitments (as defined in the Credit
Agreement), the aggregate principal amount of the loans made by the lenders to the Company under the Credit Agreement then outstanding and the aggregate principal amount of Indebtedness outstanding under this Indenture and the Notes. 

“Corporate Trust Office” means the office of the Trustee that administers this Indenture, which office is, at the date as of
which this Indenture is dated, located at 500 Delaware Avenue, 11th Floor, Wilmington, Delaware 19801, Attention: Corporate Trust – Gevo 10.0% Convertible Senior Secured Notes, or such other
address in the United States as the Trustee may designate from time to time by notice to the Holders and the Company, or the principal corporate trust office in the United States of any successor Trustee (or such other address in the United States
as such successor Trustee may designate from time to time by notice to the Holders and the Company). 
 “Credit Agreement”
means the Term Loan Agreement, dated May 9, 2014, entered into by the Company, the guarantors party thereto from time to time, the Administrative Agent party thereto, and the lenders party thereto from time to time, as amended, restated,
modified and/or otherwise supplemented from time to time in accordance with the provisions thereof and the Intercreditor Agreement. For the avoidance of doubt, if the Credit Agreement is terminated, from and after such date, any reference to the
“Credit Agreement” hereunder shall mean the Credit Agreement as in effect immediately before giving effect to the termination thereof. 

“Credit Party” means the Company and each Guarantor. 

“Custodian” means Wilmington Savings Fund Society, FSB, as custodian with respect to any Global Notes, or any successor
entity. 
 “Debt Issuance” means the incurrence by any Credit Party of any Indebtedness after the date hereof (other than
as permitted by Section 4.30 of this Indenture). 
 “Debtor Relief Law” means the Bankruptcy Code, and all other
liquidation, conservatorship, bankruptcy, assignment for the benefit of creditors, moratorium, rearrangement, receivership, insolvency, reorganization, or similar debtor relief laws of the United States or other applicable jurisdictions from time to
time in effect. 
 “Default” means (a) an Event of Default or (b) any event or condition which with notice or
lapse of time or both would become an Event of Default. 
 “Deliverables Notice” shall mean a notice from the Requisite
Holders to the Trustee specifying that such notice is a “Deliverables Notice” and directing the Trustee to request from the Company the notices, statements, reports, letters, responses, summons, demands, citations and other deliverables
which are deliverable under Section 4.07(c), Sections 4.11(d) through (l), Section 4.11(p) and Section 4.23 of this Indenture upon request of the Trustee. 

  
 D-6 

 “Deposit Account” shall have the meaning given to such term in the UCC (or any
successor statute), as adopted and in force in the State of New York or, when the laws of any other state govern the method or manner of the perfection or enforcement of any Lien in any of the Collateral, the UCC (or any successor statute) of such
other state. 
 “Depository” means DTC until a successor Depository shall have become such pursuant to the applicable
provisions of this Indenture, and thereafter “Depository” shall mean such successor Depository. 
 “Designation”
has the meaning specified in Section 4.47(a). 
 “Disposition” means any sale, lease, license, transfer, assignment,
conveyance, Sale Leaseback Transaction or other disposition of any Property. 
 “Disqualified Equity Interests” means any
Equity Interest which, by its terms (or by the terms of any security or other Equity Interests into which it is convertible or for which it is exchangeable), or upon the happening of any event or condition (i) matures or is mandatorily
redeemable (other than solely for Equity Interests which are not otherwise Disqualified Equity Interests), pursuant to a sinking fund obligation or otherwise, (ii) is redeemable at the option of the holder thereof (other than solely for Equity
Interests which are not otherwise Disqualified Equity Interests), in whole or in part, (iii) requires the scheduled payments or dividends in cash or (iv) is or becomes convertible into or exchangeable for Indebtedness or any other Equity
Interests that would constitute Disqualified Equity Interests, in each case, prior to the date that is 180 days after the Stated Maturity Date, except, in the case of clauses (i) and (ii), if as a result of a change of control or asset sale, so
long as any rights of the holders thereof upon the occurrence of such a change of control or asset sale event are subject to the prior payment in full of all Obligations. The foregoing to the contrary notwithstanding, “Disqualified Equity
Interests” shall not include the 2013 Warrants solely as a result of the Black Scholes Value payments required in connection therewith. 

“Distributed Property” has the meaning specified in Section 7.04(c). 

“Dividend” means, with respect to any Person, a dividend or return on equity capital to the holders of its Equity Interests
or any other distribution, payment or delivery of property or cash to the holders of its Equity Interests as such, or any redemption, retirement, purchase or other acquisition, directly or indirectly, for consideration any of its Equity Interests
outstanding (or any options or warrants issued by such person with respect to its Equity Interests). Without limiting the foregoing, “Dividends” with respect to any person shall also include all payments made by such person with respect to
any stock appreciation rights, plans, equity incentive or achievement plans or any similar plans. 
 “Domestic Subsidiary”
means any Subsidiary of the Company or any other Credit Party organized under the laws of the United States of America, any state thereof or the District of Columbia. 

“DTC” means The Depository Trust Company. 

“Embargoed Person” has the meaning assigned such term in Section 4.44. 

  
 D-7 

 “Enforcement Action” means any action or decision taken in connection with the
exercise of remedial rights of the Holders of the Notes and the Trustee and/or Collateral Trustee, representing the interests of the Holders of the Notes (including in respect of the Collateral pursuant to the Security Documents) following the
occurrence and during the continuation of an Event of Default. 
 “Environment” or “Environmental” shall
have the meanings set forth in 42 U.S.C. 9601(8) and shall include, without limitation, soil, soil gas, sediment, fish, wildlife, biota and all other natural resources. 

“Environmental Indemnity Agreement” shall mean that certain environmental indemnity agreement dated as of May 9, 2014 by
and between Administrative Agent and the Credit Parties. 
 “Environmental Law” means, all Legal Requirements relating to
Hazardous Substances, pollution, restoration or protection of the environment or the health and safety of employees as it related to Hazardous Substances, including, but not limited to the Federal Water Pollution Control Act (33 U.S.C. §1251 et
seq.), Resource Conservation and Recovery Act (42 U.S.C. §6901 et seq.), Safe Drinking Water Act (42 U.S.C. §3000(f) et seq.), Toxic Substances Control Act (15 U.S.C. §2601 et seq.), Clean Air Act (42 U.S.C. §7401 et seq.),
Comprehensive Environmental Response, Compensation and Liability Act (42 U.S.C. §9601 et seq.) and other similar state and local statutes, in effect as of the date hereof, including any judicial or administrative interpretation thereof. 

“Environmental Permit” means any permit, license, order, approval, registration or other authorization issued under
Environmental Laws by any Governmental Authority. 
 “Equipment” has the meaning assigned such term in the UCC. 

“Equity Documents” means (i) the Purchase Agreement, (ii) the Registration Rights Agreement, (iii) this
Indenture, (iv) the Notes, (v) the Subsidiary Guarantees, (vi) the Environmental Indemnity Agreement and (vii) the Security Documents. 

“Equity Interest” means with respect to any Person, any and all shares, interests, participations or other equivalents
(however designated, whether voting or nonvoting) of capital stock of a corporation, any and all equivalent ownership interests in a Person (other than a corporation), including, without limitation, partnership interests, limited liability company
interests, and membership interests, whether outstanding on, or issued after, the Closing Date, and any and all warrants, rights or options to purchase or other arrangement or rights to acquire any of the foregoing; provided, however, that
“Equity Interest” shall not include the Notes or any other debt securities that are convertible or exchangeable (by the terms set forth in the instruments and/or agreements evidencing such Indebtedness) into any Equity Interest. 

“ERISA” means the Employee Retirement Income Security Act of 1974, as amended from time to time and the regulations
promulgated and rulings issued thereunder. 
 “Event of Default” has the meaning specified in Section 9.01. 

  
 D-8 

 “Ex-Dividend Date” means the first date on which the shares of Common Stock
trade on the applicable exchange or in the applicable market, regular way, without the right to receive the issuance, dividend or distribution in question, from the Company or, if applicable, from the seller of the shares of Common Stock on such
exchange or market (in the form of due bills or otherwise) as determined by such exchange or market. 
 “Exchange Act”
means the U.S. Securities Exchange Act of 1934, as amended. 
 “Excluded Property” has the meaning specified in the
Security Agreement. 
 “Excluded Taxes” means any of the following Taxes imposed on or with respect to a Holder or required
to be withheld or deducted from a payment to a Holder, (a) Taxes imposed on or measured by net income (however denominated), franchise Taxes, and branch profits Taxes, in each case, (i) imposed as a result of such Holder being organized
under the laws of, or having its principal office or its applicable lending office located in, the jurisdiction imposing such Tax (or any political subdivision thereof) or (ii) that are Other Connection Taxes, (b) U.S. federal withholding
Taxes imposed on amounts payable to or for the account of a Holder with respect to an applicable interest in the Notes pursuant to a law in effect on the date on which such Holder acquires such Notes except to the extent that such Holder’s
assignor (if any) was entitled, at the time of assignment, to receive additional amounts with respect to such withholding Tax pursuant to Section 6.01, (c) Taxes attributable to such Holder’s failure to comply with Section 6.05
or Section 6.07, and (d) any U.S. federal withholding Taxes imposed under FATCA. 
 “Executive Order” has the
meaning assigned such term in Section 4.44. 
 “Expiration Date” has the meaning specified in Section 7.04(e).

 “FATCA” means Sections 1471 through 1474 of the Code, as of the date of this Indenture (or any amended or successor
version that is substantively comparable and not materially more onerous to comply with) and (a) any current or future regulations or official interpretations thereof, (b) any agreements entered into pursuant to Section 1471(b)(1) of
the Code, and (c) any intergovernmental agreement or any fiscal or regulatory legislation, rules, or practices adopted pursuant to any intergovernmental agreement entered into in connection therewith. 

“Federal Reserve Board” means the Board of Governors of the Federal Reserve System or any of its successors. 

“Financial Officer Certification” means, with respect to the financial statements for which such certification is required,
the certification of the chief financial officer of the Company that such financial statements fairly present, in all material respects, the financial condition of the Company and its Subsidiaries as at the dates indicated and the results of their
operations and their cash flows for the periods indicated, subject to changes resulting from audit and normal year-end adjustments, and, with respect to quarterly financial statements, absence of footnotes. 

“First Issue Date” means the date the Initial Notes are originally issued under this Indenture pursuant to the Purchase
Agreement. 

  
 D-9 

 “Foreign Subsidiary” means any Subsidiary of a Credit Party that is not a
Domestic Subsidiary and any Subsidiary of any Foreign Subsidiary. 
 “Fundamental Change” means the occurrence of any of
the following events at any time after the Notes are originally issued: 
 (1) a “person” or
“group” within the meaning of Section 13(d) of the Exchange Act other than the Company, the Company’s Subsidiaries or the Company’s or the Company’s Subsidiaries’ employee benefit plans files a Schedule TO
or any schedule, form or report under the Exchange Act disclosing that such person or group has become the direct or indirect “beneficial owner,” as defined in Rule 13d-3 under the Exchange Act, of the Company’s common equity
representing more than 50% of the voting power of all outstanding classes of the Company’s common equity entitled to vote generally in the election of the Company’s directors; 

(2) consummation of (A) any share exchange, consolidation or merger involving the Company pursuant to which the Common
Stock will be converted into cash, securities or other property or (B) any sale, lease or other transfer in one transaction or a series of transactions of all or substantially all of the consolidated assets of the Company and the Company’s
Subsidiaries, taken as a whole, to any Person other than one or more of the Company’s Subsidiaries; provided, however, that a share exchange, consolidation or merger transaction described in clause (A) above in which the holders of
more than 50% of all shares of Common Stock entitled to vote generally in the election of the Company’s directors immediately prior to such transaction own, directly or indirectly, more than 50% of all shares of common stock entitled to vote
generally in the election of the directors of the continuing or surviving entity or the parent entity thereof immediately after such transaction by reason of such holders owning stock in the Company immediately prior to such transaction shall not be
a Fundamental Change; 
 (3) the Company’s shareholders approve any plan or proposal for the liquidation or dissolution
of the Company; or 
 (4) the Common Stock (or other Capital Stock into which the Notes are then convertible pursuant to the
terms of this Indenture) ceases to be listed on any of The New York Stock Exchange, The NASDAQ Global Select Market or The NASDAQ Global Market (or any of their respective successors). 

“Fundamental Change Company Notice” has the meaning specified in Section 8.01(b). 

“Fundamental Change Make-Whole Payment” has the meaning specified in Section 8.01(a). 

“Fundamental Change Offer” has the meaning specified in Section 8.01(b). 

“Fundamental Change Purchase Date” has the meaning specified in Section 8.01(a). 

“Fundamental Change Purchase Notice” has the meaning specified in Section 8.01(a)(i). 

  
 D-10 

 “Fundamental Change Purchase Price” has the meaning specified in
Section 8.01(a). For the avoidance of doubt, the Fundamental Change Purchase Price shall include the Fundamental Change Make-Whole Payment as a component thereof. 

“GAAP” means generally accepted accounting principles recognized as such by the Financial Accounting Standards Board (or
generally recognized successor) consistently applied and maintained throughout the period indicated and consistent with applicable laws, except for changes mandated by the Financial Accounting Standards Board or any similar accounting authority of
comparable standing (except that the determination of whether a lease is to be treated as an operating lease or capital lease shall be made without giving effect to any change in accounting for leases pursuant to GAAP, including, without limitation,
resulting from the implementation of proposed changes to Accounting Standards Codification Topic 840, Leases, by the Exposure Draft issued by the FASB and IASB on August 17, 2010 (and related updates and changes to the Exposure Draft), or any
successor proposal), applied on a basis consistent with the requirements of Section 1.05 herein. If any change in any accounting principle or practice is required by the Financial Accounting Standards Board (or generally recognized successor)
in order for such principle or practice to continue as a generally accepted principle or practice, all financial reports or statements required hereunder or in connection herewith may be prepared in connection with such change, but all calculations
and determinations to be made hereunder may be made in accordance with such change only if the Company and the Requisite Holders agree to do so. Whenever any accounting term is used herein which is not otherwise defined, it shall be interpreted in
accordance with GAAP or International Financial Reporting Standards (IFRS), as applicable. 
 “Global Note” means a Note in
global form registered in the Register in the name of a Depository or a nominee thereof. 
 “Global Notes Legend” has the
meaning specified in Section 2.02. 
 “Governmental Authority” means the government of the United States of America or
any other nation, or of any political subdivision thereof, whether state or local, and any agency, authority, instrumentality, regulatory body, court, central bank or other entity exercising executive, legislative, judicial, taxing, regulatory or
administrative powers or functions of or pertaining to government (including any supra-national bodies such as the European Union or the European Central Bank). 

The term “guarantee” means a guarantee, other than by endorsement of negotiable instruments for collection in the ordinary
course of business, direct or indirect, in any manner including, without limitation, by way of a pledge of assets or through letters of credit or reimbursement agreements in respect thereof, of all or any part of any Indebtedness or entered into for
purposes of assuring in any other manner the obligee of such Indebtedness of the payment thereof or to protect such obligee against loss in respect thereof (in whole or in part). When used as a verb, “guarantee” has a correlative meaning.

 “Guaranteed Obligations” shall have the meaning specified in Section 15.01(b). 

  
 D-11 

 “Guarantors” means each of (a) the Restricted Subsidiaries of the Company
executing this Indenture as initial Guarantors, and (b) any other Restricted Subsidiary of the Company that executes a supplement to this Indenture in accordance with Section 4.41 or Section 15.01 hereof, in each case until such time
as any such Restricted Subsidiary shall be released and relieved of its obligations pursuant to Section 15.03 hereof. 

“Hazardous Substance” means any substances, materials, or wastes identified or regulated as “hazardous,”
“toxic,” or “dangerous” pursuant to any Environmental Law, including without limitation pollutants, contaminants, petroleum, petroleum products (including crude oil or any faction thereof), radionuclides, radioactive materials,
and medical and infectious waste. 
 “Hedge Contract” means (a) any and all rate swap transactions, basis swaps,
credit derivative transactions, forward rate transactions, puts, commodity swaps, commodity options, forward commodity contracts, equity or equity index swaps or options, bond or bond price or bond index swaps or options or forward bond or forward
bond price or forward bond index transactions, interest rate options, forward foreign exchange transactions, cap transactions, floor transactions, collar transactions, currency swap transactions, cross-currency rate swap transactions, currency
options, spot contracts, or any other similar transactions or any combination of any of the foregoing (including any options to enter into any of the foregoing), whether or not any such transaction is governed by or subject to any master agreement,
and (b) any and all transactions of any kind, and the related confirmations, which are subject to the terms and conditions of, or governed by, any form of master agreement published by the International Swaps and Derivatives Association, Inc.,
any International Foreign Exchange Master Agreement, or any other master agreement (any such master agreement, together with any related schedules, a “Master Agreement”), including any such obligations or liabilities under any Master
Agreement. 
 “Holder” means a Person in whose name a Note is registered in the Register. 

 

			
	[...***...]	  	*

  

	*	Confidential Treatment Requested 

  
 D-12 

			
	     [...***...]
	  	*

 “Indebtedness” for any Person means without duplication: (a) indebtedness of such Person
for borrowed money; (b) obligations of such Person evidenced by bonds, debentures, notes or other similar instruments; (c) obligations of such Person to pay the deferred purchase price of Property or services (including, without
limitation, obligations that are non-recourse to the credit of such Person but are secured by the assets of such Person, but excluding trade accounts payable and royalty payments in regards to non-exclusive licenses of Intellectual Property in the
ordinary course of business); (d) obligations of such Person as lessee under Capital Leases and obligations of such Person in respect of synthetic leases (but excluding, for the avoidance of doubt, operating leases); (e) obligations of
such Person under letters of credit and agreements relating to the issuance of letters of credit or acceptance financing; (f) obligations of such Person under any Hedge Contract; (g) obligations of such Person owing in respect of
Disqualified Equity Interests; (h) obligations of such Person under direct or indirect guaranties in respect of, and obligations (contingent or otherwise) of such Person to purchase or otherwise acquire, or otherwise to assure a creditor
against loss in respect of, indebtedness or obligations of others of the kinds referred to in clauses (a) through (g) above; (i) guarantees of indebtedness or obligations of others of the kinds referred to in clauses (a) through
(h) above secured by any Lien on or in respect of any Property of such Person; and (j) all liabilities of such Person in respect of unfunded vested benefits under any Plan. 

For purposes of this definition, (i) the amount of any Indebtedness represented by a guaranty or other similar instrument shall be the
lesser of the principal amount of the obligations guaranteed and still outstanding and the maximum amount for which the guaranteeing Person may be liable pursuant to the terms of the instrument embodying such Indebtedness, (ii) the amount of
any Indebtedness represented by a guaranty which is limited, shall be valued at the limited amount of such obligations and (iii) the amount of any Indebtedness represented by a 

  
  

	*	Confidential Treatment Requested 

  
 D-13 

 
guaranty which is non-recourse to a Person or for which recourse is limited to an identified asset, shall be valued at the fair market value of such asset to which there is recourse under such
guaranty. 
 “Indemnified Taxes” means (a) Taxes other than Excluded Taxes and (b) to the extent not otherwise
described in (a), Other Taxes. 
 “Indenture” means this instrument as originally executed or as it may from time to time
be supplemented or amended by one or more indentures supplemental hereto entered into pursuant to the applicable provisions hereof, including, for all purposes of this instrument and any such supplemental indenture. 

“Indenture Documents” means the Indenture, the Notes, the Security Documents, the Environmental Indemnity Agreement and each
other agreement, instrument, or document executed by any Credit Party, any Subsidiary of any Credit Party or any of their officers at any time in connection with the Indenture or the Notes (for the avoidance of doubt, the Indenture Documents shall
not include the Loan Documents with the exception of the Mortgages, the Deposit Account Control Agreements (as defined in the Security Agreement) and the Securities Account Control Agreements (as defined in the Security Agreement)). 

“Initial Notes” has the meaning specified in Section 3.01. 

“Initial Purchasers” means the entities who are the Purchaser(s) party to the Purchase Agreement on the date on which the
Purchase Agreement is executed, together with their Affiliates. 
 “Insurance Policies” shall mean the insurance policies
and coverages required to be maintained by any Credit Party which is an owner of Property subject to a Mortgage with respect to the applicable Property pursuant to Section 4.05 and all renewals and extensions thereof. 

“Insurance Requirements” shall mean, collectively, all provisions of the Insurance Policies, all requirements of the issuer
of any of the Insurance Policies and all orders, rules, regulations and any other requirements of the National Board of Fire Underwriters (or any other body exercising similar functions) binding upon any Credit Party and applicable to the Property
subject to a Mortgage or any use or condition thereof. 
 “Intellectual Property” means with respect to any Person, all of
such Person’s rights, title and interest in and to all copyrights, patents and trademarks, including, without limitation, all present and future: trade secrets, know-how and other proprietary information; trademarks, trademark applications,
internet domain names, service marks, service mark applications, trade dress, trade names, business names, designs, logos, slogans (and all translations, adaptations, derivations and combinations of the foregoing) indicia and other source and/or
business identifiers, and the goodwill of the business relating thereto and all registrations or applications for registrations which have heretofore been or may hereafter be issued thereon throughout the world (but excluding intent-to-use trademark
applications unless and until a statement of use or amendment to allege use is filed and accepted by the U.S. Patent and Trademark Office or any other filing is made or circumstances otherwise change so that the interests of a Credit Party in such
trademarks is no longer on an “intent-to-use” basis, at which time such trademarks shall 

  
 D-14 

 
automatically and without further action by the parties be subject to the security interest granted by such Credit Party to the Collateral Trustee (or any successor entity thereof); copyrights
and copyright applications; (including copyrights for computer programs) and all tangible and intangible property embodying the copyrights, unpatented inventions (whether or not patentable); patents and patent applications; industrial design
applications and registered industrial designs; license agreements related to any of the foregoing and income therefrom; books, records, writings, computer tapes or disks, flow diagrams, specification sheets, computer software, source codes, object
codes, executable code, data, databases and other physical manifestations, embodiments or incorporations of any of the foregoing; the right to sue for all past, present and future infringements of any of the foregoing; all other intellectual
property; and all common law and other rights throughout the world in and to all of the foregoing. 
 “Intercreditor
Agreement” means that certain Pari Passu Intercreditor Agreement, dated as of [May     ], 2014, by and among the Credit Parties, [WB Gevo Ltd.], and its successors and assigns, as administrative agent for
the benefit of the Term Loan Secured Parties (as defined in the Intercreditor Agreement) and as mortgage agent for the benefit of the Collateral Trustee (as defined in the Intercreditor Agreement), and Wilmington Savings Fund Society, FSB, and its
successors and assigns, not in its individual capacity, but solely in its capacity as collateral trustee for the Notes Secured Parties (as defined in the Intercreditor Agreement). 

“Interest Payment Date” means the last day of each fiscal quarter. 

“Investments” has the meaning assigned to such term in Section 4.35 hereof. 

“Issue Date” means, with respect to any Note, the first date such Note is originally issued under this Indenture. 

“Joinder and Supplement to Subordination Agreement” shall mean that certain joinder and supplement to subordination agreement dated
as of even date hereof pursuant to which the Collateral Trustee and Trustee joined the Subordination Agreement. 
 “Last Reported
Sale Price” means, on any Trading Day, the closing sale price per share of Common Stock (or if no closing sale price is reported, the average of the bid and ask prices or, if more than one in either case, the average of the average bid
and/or the average ask prices) of the Common Stock on that Trading Day as reported in composite transactions for the principal United States national or regional securities exchange on which the Common Stock is traded. If the Common Stock is not
listed for trading on a United States national or regional securities exchange on the relevant Trading Day, the “Last Reported Sale Price” will be the last quoted bid price per share of Common Stock in the over-the-counter market on the
relevant Trading Day as reported by OTC Markets Group Inc. or a similar organization selected by the Company. If the Common Stock is not so quoted, the “Last Reported Sale Price” will be the average of the mid-point of the last bid and ask
prices per share of Common Stock on the relevant date from a nationally recognized independent investment banking firm selected by the Company for this purpose. 

  
 D-15 

 “Legal Holiday” is a Saturday, a Sunday or other day on which the Federal
Reserve Bank of New York or banking institutions in the State of Delaware are authorized or required by law or executive order to close or be closed. 

“Legal Requirement” means, as to any Person, any law, statute, ordinance, decree, requirement, order, judgment, rule,
regulation (or official interpretation of any of the foregoing, including any official policy or guidance) of, and the terms of any license or permit issued by, any Governmental Authority, including, but not limited to, Regulations D, T, U, and X,
which is applicable to such Person. 
 “Lien” means any recorded or unrecorded, express or implied, written or oral
mortgage, lien (statutory or otherwise), pledge, assignment, charge, deed of trust, security interest, hypothecation, preference, deposit arrangement or encumbrance (or other type of arrangement having the practical effect of the foregoing) to
secure or provide for the payment of any obligation of any Person, whether arising by contract, operation of law, or otherwise (including, without limitation, the interest of a vendor or lessor under any conditional sale agreement, synthetic lease,
Capital Lease, or other title retention agreement). 
 “Liquid Investments” means: 

 

	 	(a)	direct obligations of, or obligations the principal of and interest on which are unconditionally guaranteed by, the United States maturing within 180 days from the date of any acquisition thereof; 

 

	 	(b)	negotiable or nonnegotiable certificates of deposit, time deposits, or other similar banking arrangements maturing within 180 days from the date of acquisition thereof (“bank debt securities”), issued by
(A) any Holder (or any Affiliate of any Holder) or (B) any other bank or trust company so long as such certificate of deposit is pledged to secure any Credit Party’s ordinary course of business bonding requirements, or any other bank
or trust company which has primary capital of not less than $500,000,000, if at the time of deposit or purchase, such bank debt securities are rated not less than “AA” (or the then equivalent) by the rating service of Standard &
Poor’s Ratings Group or of Moody’s Investors Service, Inc., and (ii) commercial paper issued by (A) any Holder (or any Affiliate of any Holder) or (B) any other Person if at the time of purchase such commercial paper is
rated not less than “A 1” (or the then equivalent) by the rating service of Standard & Poor’s Ratings Group or not less than “P 1” (or the then equivalent) by the rating service of Moody’s Investors Service,
Inc., or upon the discontinuance of both of such services, such other nationally recognized rating service or services, as the case may be, as shall be selected by the applicable Credit Party with the consent of the Requisite Holders;

  

	 	(c)	deposits in money market funds investing exclusively in investments described in clauses (a) and (b) above; and 

  

	 	(d)	 repurchase agreements relating to investments described in clauses (a) and (b) above with a market value at least equal to the consideration
paid in connection therewith, with any Person who regularly engages in the business of entering into repurchase 

  
 D-16 

	 	
agreements and has a combined capital surplus and undivided profit of not less than $500,000,000, if at the time of entering into such agreement the debt securities of such Person are rated not
less than “AA” (or the then equivalent) by the rating service of Standard & Poor’s Ratings Group or of Moody’s Investors Service, Inc. 

“Loan Documents” means the Credit Agreement, any promissory note of the Company payable to any lender evidencing indebtedness
of the Company to such lender resulting from the portion of the loans made by the lenders to the Company under the Credit Agreement, the Security Instruments (as defined in the Credit Agreement), the Environmental Indemnity Agreement and each other
agreement, instrument, or document executed by any Credit Party, any Subsidiary of any Credit Party or any of their officers at any time in connection with the Credit Agreement (for the avoidance of doubt, the Loan Documents shall not include the
Equity Documents), in each case, as amended, restated, modified and/or otherwise supplemented from time to time in accordance with the provisions thereof and the Intercreditor Agreement. 

“Make-Whole Payment” means any of the Conversion Event Make-Whole Payment, the Voluntary Conversion Make-Whole Payment or the
Fundamental Change Make-Whole Payment, as applicable or as the context requires. Any Make-Whole Payment will be calculated by the Company and certified in an Officers’ Certificate delivered to the Trustee. 

“Material Adverse Change” means (a) a material adverse change in the business, assets, financial condition or operations
of the Credit Parties, taken as a whole, (b) a material adverse effect on any Credit Party’s ability, as a whole, to perform its obligations under this Indenture, any other Equity Document, or the Loan Documents, or (c) a material
adverse change on the validity or enforceability of this Indenture or any of the other material Equity Documents. 
 “Maturity
Date” means March 15, 2017. 
 “Merger Event” has the meaning specified in Section 7.05. 

“Mortgage” means each of the mortgages or deeds of trust executed by any one or more of the Credit Parties (a) in favor
of the Collateral Trustee for the benefit of the Secured Parties and/or (b) in favor of (i) [Whitebox Advisors LLC, a Delaware limited liability company] [WB Gevo Ltd.], and its successors and assigns, in its capacity as
administrative agent for the benefit of the Secured Lender Parties and (ii) [Whitebox Advisors LLC, a Delaware limited liability company] [WB Gevo Ltd.], and its successors and assigns, in its capacity as agent for the benefit of the
Collateral Trustee, in its capacity as collateral trustee for the benefit of the Secured Parties hereunder, as they may be amended, restated, supplemented or otherwise modified from time to time, together with any assumptions or assignments thereof,
and “Mortgages” shall mean all of such mortgages or deeds of trust collectively. 
 “Multiemployer Plan” means a
“multiemployer plan” as defined in Section 3(37) and Section 4001(a)(3) of ERISA that is subject to Title IV of ERISA. 

“Net Cash Proceeds” means 
  

	 	(a)	 with respect to any Disposition (other than any issuance or sale of Equity Interests), the cash proceeds received by any Credit Party (including cash
proceeds subsequently 

  
 D-17 

	 	
received (as and when received by such Credit Party) in respect of non-cash consideration initially received) net of (i) selling expenses (including reasonable brokers’ fees or
commissions, legal, accounting and other professional and transactional fees, transfer and similar taxes and Company’s good faith estimate of income taxes paid or payable in connection with such sale); (ii) amounts provided as a reserve,
in accordance with GAAP, against any liabilities under any indemnification obligations associated with such Disposition or any other liabilities retained by any Credit Party associated with the properties sold in such Disposition and, subject to the
provisions of the Security Agreement, held in an account subject to the Collateral Trustee’s or Administrative Agent’s (or any successor entity thereof, including, without limitation, the Collateral Trustee) control for the benefit of the
Secured Lender Parties and/or the Secured Parties hereunder and/or certain other secured parties (provided that, to the extent and at the time any such amounts are released from such reserve, such amounts shall automatically constitute Net Cash
Proceeds); (iii) Company’s good faith estimate of payments required to be made with respect to unassumed liabilities relating to the properties sold within two (2) years of such Disposition and, subject to the provisions of the
Security Agreement and the Intercreditor Agreement, held in an account subject to the Collateral Trustee’s or Administrative Agent’s (or any successor entity thereof, including, without limitation, the Collateral Trustee) control for the
benefit of the Secured Lender Parties and/or the Secured Parties hereunder and/or certain other secured parties (provided that, to the extent such cash proceeds are not used to make payments in respect of such unassumed liabilities within two
(2) years of such Disposition and, subject to the provisions of the Security Agreement and the Intercreditor Agreement, placed in an account subject to the Collateral Trustee’s or Administrative Agent’s (or any successor entity
thereof, including, without limitation, the Collateral Trustee) control for the benefit of the Secured Lender Parties and/or the Secured Parties hereunder and/or certain other secured parties, such cash proceeds shall automatically constitute Net
Cash Proceeds); and (iv) the principal amount, premium or penalty, if any, interest and other amounts on any Indebtedness which is secured by a Lien on the properties sold in such Disposition (so long as such Lien was permitted to encumber such
properties under the Indenture Documents at the time of such sale and the Indebtedness secured by such Liens is permitted hereunder) and which is repaid with such proceeds (other than any such Indebtedness assumed by the purchaser of such
properties); 

  

	 	(b)	with respect to any Debt Issuance by any Credit Party, the cash proceeds thereof, net of customary fees, commissions, costs and other expenses incurred in connection therewith; 

 

	 	(c)	 with respect to any Casualty Event, the insurance proceeds, condemnation awards and other compensation received in cash in respect thereof, net of
(i) all reasonable costs and expenses incurred in connection with the collection of such proceeds and the reasonable cost of putting any real property in a safe and secure condition, awards or other compensation in respect of such Casualty
Event and (ii) the principal amount, premium or penalty, if any, interest and other amounts on any Indebtedness for borrowed money which is secured by a Lien on the properties subject to such

  
 D-18 

	 	
Casualty Event (so long as such Lien was permitted to encumber such properties under the Indenture Documents at the time of such sale and the Indebtedness secured by such Liens is permitted
hereunder) and which is repaid with such proceeds (other than any such Indebtedness incurred in connection with such Casualty Event); and 

  

	 	(d)	for the purposes of determining the amount of Non-Recourse Investment Assets only, with respect to any issuance of Indebtedness by any Credit Party, the cash proceeds thereof, net of customary fees, commissions, costs
and other expenses incurred in connection therewith. 

 “Net Equity Proceeds” means an amount equal to any
cash proceeds from a capital contribution to, or the issuance of any Equity Interests of, the Company or any of its Subsidiaries (other than pursuant to any employee, director or consultant stock or stock option compensation plan), net of reasonable
underwriting discounts and commissions, legal, accounting and other professional and transactional fees, transfer and similar taxes and the Company’s good faith estimate of income taxes paid or payable, in each case, in connection with such
contribution or issuance (for the avoidance of doubt, the proceeds of the Notes shall not constitute Net Equity Proceeds). 

“Non-Recourse Investment Assets” means, without duplication, all of the following: 

(i) the aggregate amount of Net Equity Proceeds from any issuance of Equity Interests of the Company (other than any Equity Interests issued in
connection with the issuance and/or conversion of the Notes) from and after the Closing Date, 
 (ii) an amount equal to the Net Cash
Proceeds from Permitted Subordinated Debt from and after the Closing Date; 
 (iii) the Net Cash Proceeds from any Disposition of any Equity
Interest or other Investment in any Unrestricted Subsidiary from and after the Closing Date; 
 (iv) all distributions, dividends, payments
or other returns made to a Credit Party from an Unrestricted Subsidiary in respect of any Investment by such Credit Party in such Unrestricted Subsidiary from and after the Closing Date; 

(v) the Net Cash Proceeds from unsecured Indebtedness permitted under Section 4.30(h) hereof; and 

(vi) all other Proceeds from any other Non-Recourse Investment Assets or from any Disposition of any Equity Interest issued by any
Unrestricted Subsidiary or from the Disposition of any other Investment in any Unrestricted Subsidiary from and after the Closing Date; 

provided that, in the case of subclauses (i) through (vi) (but with respect to clause (iv), other than any such assets that are not
cash or cash equivalents) of this definition, to the extent such assets consist of cash or cash equivalents, in order to constitute Non-Recourse Investment Assets, such assets shall be required to be maintained in a Collateral Account, segregated
from all other Property that is not Non-Recourse Investment Assets, until applied, invested, or otherwise disposed of as Non-Recourse Investment Assets in accordance with the terms of this Indenture. 

  
 D-19 

 “Non-U.S. Holder” has the meaning specified in Section 6.05. 

“Notes” has the meaning specified in the first paragraph of the Recitals of the Company and Guarantors, and includes any Note
or Notes, as the case may be, authenticated and delivered under this Indenture, including any Global Note. The Initial Notes and the Additional Notes shall be treated as a single class for all purposes under this Indenture, including, without
limitation, waivers, amendments and repurchase offers. 
 “Notice of Default” means written notice provided to the Company
by the Trustee or to the Company and the Trustee by the Requisite Holders of a Default by the Company, which notice must specify the Default, demand that it be remedied and expressly state that such notice is a “Notice of Default.” 

“Obligations” means (a) obligations of the Company and the other Credit Parties from time to time to pay (and otherwise
arising under or in respect of the due and punctual payment of) (i) principal, interest (including interest accruing during the pendency of any proceeding under any Debtor Relief Law, regardless of whether allowed or allowable in such
proceeding) and all other obligations of the Company under the Notes issued under this Indenture (including, without limitation, any applicable Make-Whole Payment and any other premium) when and as due, whether at maturity, by acceleration, upon one
or more dates set for redemption or otherwise, and (ii) all other monetary obligations, including fees, costs, expenses and indemnities, whether primary, secondary, direct, contingent, fixed or otherwise (including monetary obligations incurred
during the pendency of any proceeding under any Debtor Relief Law, regardless of whether allowed or allowable in such proceeding), of the Company and the other Credit Parties under this Indenture, the other Equity Documents and the other Indenture
Documents and (b) the due and punctual performance of all covenants, agreements, obligations and liabilities of the Company and the other Credit Parties under or pursuant to this Indenture, the other Equity Documents and the other Indenture
Documents. 
 “OFAC” means the U.S. Treasury Department Office of Foreign Assets Control. 

“Officers’ Certificate” means a certificate signed (a) by the Chief Executive Officer, the President, the Chief
Financial Officer or any of the Vice Presidents of the Company, and (b) by the Treasurer, any Assistant Treasurer, the Secretary, any Assistant Secretary or any of the Vice Presidents of the Company, and delivered to the Trustee and, with
respect to Collateral matters, the Collateral Trustee. 
 “Open of Business” means 9:00 a.m., New York City time. 

“Opinion of Counsel” means a written opinion of counsel, who may be external or in-house counsel for the Company. 

“Organizational Documents” means with respect to any Person, (i) in the case of any corporation, the certificate of
incorporation and by-laws (or similar documents) of such Person, (ii) in the case of any limited liability company, the certificate of formation and operating 

  
 D-20 

 
agreement (or similar documents) of such Person, (iii) in the case of any limited partnership, the certificate of formation and limited partnership agreement (or similar documents) of such
Person, (iv) in the case of any general partnership, the partnership agreement (or similar document) of such Person and (v) in any other case, the functional equivalent of the foregoing. 

“Other Connection Taxes” means, with respect to any Holder, Taxes imposed as a result of a present or former connection
between such Holder and the jurisdiction imposing such Tax (other than connections arising from such Holder having executed, delivered, become a party to, performed its obligations under, received payments under, received or perfected a security
interest under, engaged in any other transaction pursuant to or enforced any Note, or sold or assigned an interest in any Note). 

“Other List” has the meaning assigned such term in Section 4.44. 

“Other Taxes” means any and all present or future stamp, court or documentary, intangible, recording, filing, or similar
taxes (including related interest, fines, penalties and additions to tax) arising from any payment made or required to be made under any Equity Document and/or Indenture Documents or from the execution, delivery or enforcement of, or otherwise with
respect to, any Equity Document and/or Indenture Documents, except for any such Taxes that are Other Connection Taxes or that are imposed with respect to an assignment. 

“outstanding” when used with reference to Notes, shall, subject to the provisions of Section 16.04, mean, as of any
particular time, all Notes authenticated and delivered by the Trustee under this Indenture, except: 
 (i) Notes theretofore
canceled by the Trustee or accepted by the Trustee for cancellation; 
 (ii) Notes, or portions thereof, that have become due
and payable and in respect of which monies in the necessary amount shall have been deposited in trust with the Trustee or with any Paying Agent (other than the Company) or shall have been set aside and segregated in trust by the Company (if the
Company shall act as its own Paying Agent); 
 (iii) Notes that have been paid pursuant to Section 3.1 and Notes in lieu
of which, or in substitution for which, other Notes shall have been authenticated and delivered pursuant to the terms of Section 3.09 unless proof satisfactory to the Trustee is presented that any such Notes are held by protected purchasers in
whose hands such Notes are valid obligations of the Company; and 
 (iv) Notes converted pursuant to Article 7 and required
to be cancelled pursuant to Section 3.12. 
 “Paying Agent” means any Person (including the Company) authorized by the
Company to pay the Principal Amount of, interest on, including PIK Interest, Additional Interest or the Fundamental Change Purchase Price of, any Notes on behalf of the Company. The Trustee shall initially be the Paying Agent at its Corporate Trust
Office. 

  
 D-21 

 “PBGC” means the Pension Benefit Guaranty Corporation or any entity succeeding
to any or all of its functions under ERISA. 
 “Permitted Business” has the meaning assigned such term in
Section 4.38. 
 “Permitted Disposition” means any Disposition permitted by Section 4.32. 

“Permitted Holder” shall mean (a) Whitebox Advisors LLC, any of its Affiliates or any investment fund or accounts for
which Whitebox Advisors LLC or any of its Affiliates have the authority to provide any consents, approvals or directions as (or on behalf of) a Holder under this Indenture and (y) WB Gevo Ltd. or any of its Affiliates. 

“Permitted Investment” means the Investments permitted under Section 4.35. 

“Permitted Liens” means the Liens permitted under Section 4.29. 

“Permitted Refinancing” means, with respect to any Person, Indebtedness issued, incurred or otherwise obtained in exchange
for, or to extend, renew, replace or refinance, in whole or part, any Indebtedness of such Person (solely for purposes of this definition, “Refinanced Debt”); provided that (a) such Indebtedness has a later maturity than or does not
result in a shortening of the average weighted maturity (measured as of the refinancing, renewal or extension) of the Refinanced Debt, (b) except as otherwise permitted hereunder (subject to dollar-for-dollar reduction of any applicable basket)
such Indebtedness shall not have a greater principal amount than the principal amount of the Refinanced Debt plus accrued interest, fees and premiums (if any) thereon and reasonable fees and expenses associated with the refinancing and by the amount
of unfunded commitments with respect thereto (provided that the limitation on principal amount of such Indebtedness shall not include any principal constituting interest paid in kind), (c) such Refinanced Debt shall be repaid, defeased or
satisfied and discharged on a dollar-for-dollar basis (unless paid at a discount), and all accrued interest, fees and premiums (if any) in connection therewith shall be paid, substantially concurrently with the incurrence of such Permitted
Refinancing, (d) such Indebtedness shall not at any time be guaranteed by any Persons other than Persons that are guarantors of the Refinanced Debt, and the terms of such guarantee shall be no more favorable to the secured parties in respect of
such Indebtedness than the terms of the guarantee of the Refinanced Debt, (e) if the Refinanced Debt is secured and such Liens are permitted under Section 4.29 hereof, the Permitted Refinancing may be secured provided that the terms and
conditions relating to collateral for such Indebtedness, taken as a whole, shall be no more favorable to the secured parties in respect of such Indebtedness than the terms and conditions with respect to the collateral for the Refinanced Debt (and
the Liens on any collateral securing such Indebtedness shall have the same (or lesser) priority as the Refinanced Debt relative to the Liens on the Collateral securing the Obligations), (f) if the Refinanced Debt is subordinated in right of
payment to the Obligations, such Indebtedness shall be subordinated in right of payment to the Obligations on terms at least as favorable to the Holders as the subordination terms applicable to the Refinanced Debt, and (g) such Indebtedness
shall have covenants, default and remedy provisions and other terms and conditions that are substantially identical to, or less favorable to the investors providing such Indebtedness than those applicable to the Refinanced Debt. 

  
 D-22 

 “Permitted Subordinated Debt” means (a) Indebtedness incurred by the Credit
Parties prior to the Closing Date under the TriplePoint Loan Documents and subject to the Subordination Agreement and (b) other Indebtedness incurred by Credit Parties; provided that (i) such Indebtedness shall be subordinated in right of
payment to the payment in full of the Obligations, (ii) such Indebtedness shall be either (x) unsecured or (y) secured by the Collateral on a junior basis (including with respect to the control of remedies) with the Obligations,
(iii) if such Indebtedness is secured, the holders of such Indebtedness (or their senior representative or agent) and the Collateral Trustee shall be party to a subordination agreement reasonably satisfactory to the Requisite Holders,
(iv) such Indebtedness shall not be at any time guaranteed by any Subsidiaries other than Subsidiaries that are Guarantors and the terms of such guarantee shall be no more favorable to the secured parties in respect of such Indebtedness than
the terms of the Guarantee, (v) such Indebtedness shall have covenants, default and remedy provisions and other terms and conditions (other than interest, fees, premiums, funding discounts or optional prepayment or redemption provisions) that
are substantially identical to, or less favorable to the investors providing such Indebtedness than, those set forth in this Indenture, (vi) the maturity date of such Indebtedness shall be no earlier than the date that is ninety one
(91) days after the Stated Maturity Date, and (vii) there shall be no scheduled amortization of such Indebtedness, and such Indebtedness shall not be subject to mandatory redemption, repurchase, prepayment or sinking fund obligation
(except customary asset sale or change-of-control provisions that provide for the prior repayment in full of the Notes and all other Obligations), in each case prior to the date that is ninety one (91) days after the Stated Maturity Date. 

“Person” means an individual, partnership, corporation (including a business trust), joint stock company, limited liability
corporation or company, limited liability partnership, trust, unincorporated association, joint venture or other entity, or a government or any political subdivision or agency thereof or any trustee, receiver, custodian or similar official. 

“Physical Notes” means permanent certificated Notes in registered form issued in minimum denominations of $1,000 Principal
Amount and, if PIK Notes are issued, in minimum denominations of $1.00 Principal Amount. 
 “PIK Interest” means interest
paid with respect to the Notes in the form of increasing the outstanding Principal Amount of the Notes or issuing PIK Notes. 
 “PIK
Notes” means Additional Notes issued under this Indenture in connection with a PIK Payment, with the same terms as the Initial Notes, except that interest on any PIK Notes shall accrue from their date of issuance. 

“PIK Payment” means an interest payment with respect to the Notes made by increasing the outstanding Principal Amount of the
Notes or issuing PIK Notes, in each case by the amount of such payment. 
 “Plan” means any employee pension benefit plan,
as defined in Section 3(2) of ERISA, subject to the provisions of Title IV of ERISA, Section 412 of the Code or Section 302 of ERISA other than a Multiemployer Plan. 

  
 D-23 

 “Principal Amount” of a Note means the principal amount as set forth on the face
of the Note. For purposes of this Indenture, all references to “Principal Amount” of a Note shall include any increase in the principal amount thereof in respect of PIK Interest. 

“Property” of any Person means any property or assets (whether real, personal, or mixed, tangible or intangible) of such
Person. 
 “Pro Rata Share” means as to any Holder, at the relevant date of determination, the fraction (expressed as a
percentage), the numerator of which is the principal amount of the Notes held by such Holder and the denominator of which is the aggregate outstanding principal amount of the Notes of all Holders. 

“Publicly Traded Securities” means shares of Capital Stock traded on The New York Stock Exchange, The NASDAQ Global Select
Market or The NASDAQ Global Market (or their respective successors), or, with respect to a transaction that otherwise would be a Fundamental Change, which will be so traded when issued or exchanged in connection with such transaction. 

“Purchase Agreement” means the Exchange and Purchase Agreement, dated May 9, 2014, entered into by the Company, the
Guarantors and the purchasers party thereto in connection with, among other things, the sale or exchange of the Notes, as amended, supplemented or otherwise modified from time to time. 

“Qualified Institutional Buyer” shall have the meaning specified in Rule 144A. 

“Real Property” means, collectively, all right, title and interest (including any leasehold estate) in and to any and all
parcels of or interests in real property owned, or leased by any person, whether by lease, license or other means, together with, in each case, all easements, hereditaments and appurtenances relating thereto and all improvements and appurtenant
futures and, for the avoidance of doubt, includes buildings and fixtures. 
 “Real Property Approvals” means all approvals,
consents, waivers, orders, agreements, acknowledgments, authorizations, permits and licenses required under applicable Legal Requirements, or under the terms of any restriction, covenant or easement affecting the Credit Parties’ Real Property,
or otherwise necessary or desirable, for the ownership, acquisition, construction, equipping, use, occupancy and operation of such Real Property, whether obtained from a Governmental Authority or any other Person. 

“Record Date” means, with respect to any dividend, distribution or other transaction or event in which the holders of the
Common Stock (or other applicable security) have the right to receive any cash, securities or other property or in which the Common Stock (or other applicable security) is exchanged for or converted into any combination of cash, securities or other
property, the date fixed for determination of holders of the Common Stock (or other applicable security) entitled to receive such cash, securities or other property (whether such date is fixed by the Board of Directors or a duly authorized committee
thereof, statute, contract or otherwise). 
 “Reference Property” has the meaning specified in Section 7.05. 

“Register” and “Registrar” have the respective meanings specified in Section 3.06. 

  
 D-24 

 “Registration Rights Agreement” means that certain Registration Rights Agreement
dated as of May 9, 2014, by and among the Company and the investors party thereto, as amended, supplemented or otherwise modified from time to time. 

“Regular Record Date” means, with respect to the payment of interest on the Notes (including Additional Interest, if any),
Close of Business on March 15, June 15, September 15 and December 15, as the case may be, immediately preceding the relevant Interest Payment Date. 

“Regulation S Temporary Global Note Legend” means a legend substantially in the form set forth in Section 2.01. 

“Regulations D, T, U, and X” mean Regulations D, T, U, and X of the Federal Reserve Board, as the same is from time to time
in effect, and all official rulings and interpretations thereunder or thereof. 
 “Release” shall mean any release,
deposit, discharge, emission, leaking, leaching, spilling, seeping, migrating, injecting, pumping, pouring, emptying, escaping, dumping, or disposing into the Environment or as may be defined in the Environmental Laws. 

“Requisite Holders” means the Holders of not less than a majority in aggregate outstanding principal amount of the
outstanding Notes (which, for the avoidance of doubt, shall include any increase in the principal amount thereof in respect of PIK Interest). 

“Reserve Funds” has the meaning specified in Section 4.01. 

“Response” shall mean any response, remedial, removal, or corrective actions undertaken as required pursuant to Environmental
Laws to address a Release of Hazardous Substances to the Environment. 
 “Responsible Officer” means (a) with respect
to any Person that is a corporation, such Person’s Chief Executive Officer, President, Chief Financial Officer, Treasurer or General Counsel, (b) with respect to any Person that is a limited liability company, a manager or the Responsible
Officer of such Person’s managing member or manager, and (c) with respect to any Person that is a general partnership or a limited liability partnership, the Responsible Officer of such Person’s general partner or partners. 

“Restricted Note” has the meaning specified in Section 3.07(a)(i). 

“Restricted Notes Legend” means a legend substantially in the form set forth in Section 2.01. 

“Restricted Payment” means, with respect to any Person, (a) (x) any direct or indirect dividend or distribution
(whether in cash, securities or other Property) on account of any Equity Interest of such Person, or any options, warrants or rights to purchase or acquire any such Equity Interest of such Person or (y) any direct or indirect payment of any
kind or character (whether in cash, securities or other Property) in consideration for or otherwise in connection with any retirement, purchase, redemption or other acquisition of any Equity Interest of such Person, or

  
 D-25 

 
any options, warrants or rights to purchase or acquire any such Equity Interest of such Person (including any swap or exchange of convertible notes for Common Stock or other Equity Interests of
the Company other than on the conversion terms set forth in such convertible notes (and/or any indenture pursuant to which such convertible notes were issued) in the case of the convertible notes existing on the Term Loan Closing Date, as such terms
are in effect on the Term Loan Closing Date) or (b) principal payments, interest payments or fee, premium or any other payments (in cash, Property or otherwise) on, or redemptions of, subordinated debt (including, without limitation, Permitted
Subordinated Debt) of such Person; provided that the term “Restricted Payment” shall not include (x) any dividend or distribution payable solely in Equity Interests of the Company or warrants, options or other rights to purchase such
Equity Interests, or (y) any conversion or payments (including without limitation, make whole payments) on account of convertible notes in accordance with the provisions set forth in such convertible notes (and/or any indenture pursuant to
which such convertible notes were issued), whether such payments are in the form of cash or Common Stock. For the avoidance of doubt, (i) unsecured debt that is not expressly subordinated in right of payment to the Obligations, does not
constitute “subordinated debt” for purposes of this definition of Restricted Payment and (ii) the Indebtedness issued pursuant to the terms of that certain Indenture, dated as of July 5, 2012, between the Company and Wells Fargo
Bank, National Association, as trustee and that certain First Supplemental Indenture, dated as of July 5, 2012, to the Indenture dated as of July 5, 2012, by and among the Company and Wells Fargo Bank, National Association, as trustee,
and/or any notes governed thereby do not constitute “subordinated debt” or “Permitted Subordinated Debt” for purposes of this definition of Restricted Payment. 

“Restricted Period” means the relevant forty (40) day distribution compliance period as defined in Regulation S. 

“Restricted Stock” has the meaning specified in Section 3.07(b)(i). 

“Restricted Stock Legend” means a legend substantially in the form set forth in Exhibit A hereto. 

“Restricted Subsidiary” means any Subsidiary of the Company other than an Unrestricted Subsidiary; provided, however, that
upon the occurrence of an Unrestricted Subsidiary that is a Subsidiary ceasing to be an Unrestricted Subsidiary, such Subsidiary shall be included in the definition of “Restricted Subsidiary.” For the avoidance of doubt, as of the First
Issue Date, all of the Company’s Subsidiaries are Restricted Subsidiaries. 
 “Rule 144” means Rule 144 under the
Securities Act (including any successor rule thereto), as the same may be amended from time to time. 
 “Rule 144A” means
Rule 144A under the Securities Act (including any successor rule thereto), as the same may be amended from time to time. 
 “Sale
Leaseback Transaction” means any arrangement, directly or indirectly, with any person whereby any Credit Party shall sell or transfer any property, real or personal, used or useful in its business, whether now owned or hereafter acquired,
and thereafter rent or lease such property or other property which it intends to use for substantially the same purpose or purposes as the property being sold or transferred. 

  
 D-26 

 “SDN List” has the meaning assigned such term in Section 4.44. 

“SEC” means the United States Securities and Exchange Commission. 

“Secured Parties” means collectively, the Trustee, the Collateral Trustee and each Holder. 

“Secured Lender Parties” means collectively, the Administrative Agent and each lender party to the Credit Agreement from time
to time. 
 “Securities Act” means the U.S. Securities Act of 1933, as amended, and the rules and regulations of the
Commission promulgated thereunder. 
 “Security Agreement” means the Pledge and Security Agreement dated as of the First
Issue Date among the Collateral Trustee, the Company and the Guarantors, relating to the Notes and the Subsidiary Guarantees, as amended, restated supplemented and/or otherwise modified from time to time in accordance with the provisions hereof and
the Intercreditor Agreement. 
 “Security Documents” means, collectively, (a) the Mortgages, (b) the Security
Agreement, (c) each other agreement, instrument or document executed at any time in connection with the Security Agreement or the Mortgages, (d) each agreement, instrument or document executed in connection with any Deposit Account subject
to the Collateral Trustee’s or Administrative Agent’s (or any successor entity thereof, including, without limitation, the Collateral Trustee) control for the benefit of the Secured Lender Parties and/or the Secured Parties hereunder
and/or certain other secured parties, (e) each agreement, instrument or document executed in connection with any Deposit Account subject to the Collateral Agent’s (or any successor entity thereof) control for the benefit of the Secured
Parties hereunder, and (f) each other agreement, instrument or document executed at any time in connection with securing the Obligations, and includes any ancillary documents, instruments or agreements executed and delivered in connection with
the foregoing, all as amended, restated, supplemented and/or otherwise modified from time to time in accordance with the provisions hereof and the Intercreditor Agreement. 

“Significant Event of Default” means an Event of Default under Sections 9.01(a) or (j). 

“Significant Subsidiary” shall have the meaning given to such term in Rule 1-02(w) of Regulation S-X under the Exchange Act
as in effect on the date of this Indenture. 
 “Spin-Off” has the meaning specified in Section 7.04(c). 

“Stated Maturity Date” means March 15, 2017. 

“Stockholder Approval” means the requisite approval by the stockholders of the Company of a Stockholder Proposal in
accordance with applicable law, the Certificate of Incorporation and the Bylaws (or comparable constituent documents) of the Company and, in the case of the 19.99% Proposal, for purposes of satisfying the applicable rules and regulations of the
NASDAQ Stock Market, LLC. 

  
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 “Stockholder Proposals” means, collectively, (i) the Authorized Shares
Proposal, and (ii) the 19.99% Proposal. 
 “Subordination Agreement” means that certain subordination agreement dated
as of May 9, 2014 by and between Administrative Agent, the Trustee, the Collateral Trustee and TriplePoint (for the avoidance of doubt, the Trustee and Collateral Trustee became a party to the Subordination Agreement pursuant to the Joinder and
Supplement to Subordination Agreement). 
 “Subsidiary” means, with respect to any Person (the “parent”) at any
date, (i) any other corporation, limited liability company, association, or other business entity of which securities or other ownership interests representing more than 50% of the voting power of all Equity Interests entitled (without regard
to the occurrence of any contingency) to vote in the election of the Board of Directors thereof are, as of such date, owned, controlled or held by the parent and/or one or more subsidiaries of the parent, (ii) any partnership (a) the sole
general partner or the managing general partner of which is the parent and/or one or more subsidiaries of the parent or (b) the only general partners of which are the parent and/or one or more subsidiaries of the parent and (iii) any other
Person that is otherwise Controlled by the parent and/or one or more subsidiaries of the parent. Unless the context requires otherwise, “Subsidiary” refers to a Subsidiary of Company. 

“Subsidiary Guarantee” means the joint and several guarantee pursuant to Article 15 hereof by a Guarantor of the
Company’s Obligations. 
 “Tax” means all present or future taxes, levies, imposts, duties, deductions, withholdings
(including backup withholding), assessments, fees or other charges imposed by any Governmental Authority, including any interest, additions to tax or penalties applicable thereto. 

“Termination Event” means (a) a Reportable Event described in Section 4043 of ERISA and the regulations issued
thereunder (other than a Reportable Event not subject to the provision for 30 day notice to the PBGC or with respect to which the notice required is waived under such regulations), (b) the withdrawal of the Company or any of its Affiliates from
a Plan during a plan year in which it was a “substantial employer” as defined in Section 4001(a)(2) of ERISA, (c) the filing of a notice of intent to terminate a Plan or the treatment of a Plan amendment as a termination under
Section 4041 of ERISA, or (d) the institution of proceedings to terminate a Plan by the PBGC. 
 “Term Loan Closing
Date” means May 9, 2014 
 “Trading Day” means a day during which (i) trading in securities generally
occurs on the principal United States national or regional securities exchange on which the Common Stock is then listed or admitted for trading or, if the Common Stock is not then listed or admitted for trading on a United States national or
regional securities exchange, on the principal other market on which the Common Stock is then traded, and (ii) a Last Reported Sale Price for the Common Stock is available on such securities exchange or market. If the Common Stock is not so
listed or traded, “Trading Day” means a Business Day. 

  
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 “Trigger Event” has the meaning specified in Section 7.04(c). 

“TriplePoint” shall mean TriplePoint Capital LLC. 

“TriplePoint Loan Documents” shall mean that certain Amended and Restated Plain English Promissory Note issued by
Agri-Energy, LLC in the aggregate original principal amount of $994,615.84 to TriplePoint Capital LLC and any agreement or instrument made in connection therewith, including the Amended and Restated Plain English Growth Capital Loan and Security
Agreement dated as of October 20, 2011 by and between Agri-Energy, LLC and TriplePoint Capital LLC, as amended by that certain First Amendment to Amended and Restated Plain English Growth Capital Loan and Security Agreement dated as of
June 29, 2012, the Second Amendment to Amended and Restated Plain English Growth Capital Loan and Security Agreement dated as of December 11, 2013, and the Consent Under and Third Amendment to Amended and Restated Plain English Growth
Capital Loan and Security Agreement of even date herewith and all other Loan Documents (as defined in any TriplePoint Loan Documents) and all agreements, documents and instruments executed and/or delivered in connection with the foregoing, in each
case, as amended, restated, modified and/or otherwise supplemented from time to time in accordance with the provisions thereof and the Subordination Agreement. 

“Trustee” means the Person named as the “Trustee” in the first paragraph of this Indenture until a successor
Trustee shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Trustee” shall mean such successor Trustee. Solely for purposes of the Joinder and Supplement to Subordination Agreement,
“Trustee” shall mean Trustee and Collateral Trustee. 
 “Trust Indenture Act” means the Trust Indenture Act of
1939, as amended, as it was in force at the date of execution of this Indenture; provided, however, that in the event the Trust Indenture Act of 1939 is amended after the date hereof, the term “Trust Indenture Act” shall mean, to
the extent required by such amendment, the Trust Indenture Act of 1939, as so amended. 
 “Trust Officer” means any officer
of the Trustee within the Corporate Trust Office of the Trustee with direct responsibility for the administration of this Indenture and also, with respect to a particular matter, any other officer of the Trustee to whom such matter is referred
because of such officer’s knowledge and familiarity with the particular subject. 
 “Unrestricted Subsidiary” means,
as of any date of determination, (i) any Foreign Subsidiary of any Credit Party and (ii) any Subsidiary or any other Person that as of such date of determination has been designated an Unrestricted Subsidiary by the Board of Directors of
the Company in accordance with Section 4.47 hereof. 
 “UCC” means the Uniform Commercial Code as in effect from time
to time in any applicable state or jurisdiction. 
 “U.S.” means the United States of America. 

“Valuation Period” has the meaning set forth in Section 7.04(c). 

  
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 “Vice President” means any vice president, whether or not designated by a number
or a word or words added before or after the title “vice president.” 
 “Voluntary Conversion Make-Whole Payment”
has the meaning set forth in Section 7.03(f). 
 “Voluntary Conversion Make-Whole Payment Notice” has the meaning set
forth in Section 7.03(f). 
 “Voting Securities” means (a) with respect to any corporation (including any
unlimited liability company), capital stock of such corporation having general voting power under ordinary circumstances to elect directors of such corporation (irrespective of whether at the time stock of any other class or classes shall have or
might have special voting power or rights by reason of the happening of any contingency), (b) with respect to any partnership, any partnership interest or other ownership interest having general voting power to elect the general partner or
other management of the partnership or other Person, and (c) with respect to any limited liability company, membership certificates or interests having general voting power under ordinary circumstances to elect managers of such limited
liability company. 
 Section 1.02 Compliance Certificates and Opinions 

Upon any application or request by the Company to the Trustee to take or refrain from taking any action under any provision of this Indenture,
the Company shall furnish to the Trustee an Officers’ Certificate and, unless otherwise provided herein, an Opinion of Counsel. 

Every Officers’ Certificate or Opinion of Counsel (in each case, in form reasonably satisfactory to the Trustee) with respect to
compliance with a condition or covenant provided for in this Indenture (other than a certificate provided pursuant to Trust Indenture Act § 314(a)(4)) shall comply with the provisions of Trust Indenture Act § 314(e) and shall include:

 (a) a statement that each individual signing such certificate or opinion has read such covenant or condition and the definitions herein
relating thereto; 
 (b) a brief statement as to the nature and scope of the examination or investigation upon which the statements or
opinions contained in such certificate or opinion are based; 
 (c) a statement that, in the opinion of each such individual, such
individual has made such examination or investigation as is necessary to enable such individual to express an informed opinion as to whether or not such covenant or condition has been complied with; and 

(d) a statement as to whether, in the opinion of each such individual, such condition or covenant has been complied with. 

In giving such Opinion of Counsel, counsel may rely as to factual matters on an Officers’ Certificate or certificates of public
officials. 

  
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 Section 1.03 Form of Documents Delivered to Trustee 

(a) In any case where several matters are required to be certified by, or covered by an opinion of, any specified Person, it is not necessary
that all such matters be certified by, or covered by the opinion of, only one such Person, or that they be so certified or covered by only one document, but one such Person may certify or give an opinion with respect to some matters and one or more
other such Persons as to other matters, and any such Person may certify or give an opinion as to such matters in one or several documents. 

(b) Any certificate or opinion of an officer of the Company may be based, insofar as it relates to legal matters, upon a certificate or
opinion of, or representations by, counsel, unless such officer knows, or in the exercise of reasonable care should know, that the certificate or opinion or representations with respect to the matters upon which his certificate or opinion is based
are erroneous. Any such certificate or Opinion of Counsel may be based, insofar as it relates to factual matters, upon a certificate or opinion of, or representations by, an officer or officers of the Company stating that the information with
respect to such factual matters is in the possession of the Company, unless such counsel knows, or in the exercise of reasonable care should know, that the certificate or opinion or representations with respect to such matters are erroneous. 

(c) Where any Person is required to make, give or execute two or more applications, requests, consents, certificates, statements, opinions or
other instruments under this Indenture, they may, but need not, be consolidated and form one instrument. 
 Section 1.04 Acts of
Holders; Record Dates 
 (a) Whenever in this Indenture it is provided that the Holders of a specified percentage in aggregate Principal
Amount of the Notes may take action (including the making of any demand or request, the giving of any direction, notice, consent or waiver or the taking of any other action) the fact that at the time of taking any such action the Holders of such
specified percentage have joined therein may be evidenced by (i) any instrument or any number of instruments of similar tenor executed by Holders in person or by an agent or proxy duly appointed in writing, (ii) the record of the Holders
voting in favor thereof at any meeting of Holders duly called and held in accordance with procedures approved by the Trustee, (iii) a combination of such instrument or instruments and any such record of such a meeting of Holders or (iv) in
the case of Notes evidenced by a Global Note, any electronic transmission or other message, whether or not in written format, that complies with the Depository’s Applicable Procedures. Except as herein otherwise expressly provided, such action
shall become effective when any such instrument or records are delivered to the Trustee and, where it is hereby expressly required, to the Company. Proof of execution of any such instrument or of a writing appointing any agent pursuance to clause
(a) shall be sufficient for any purpose hereof and conclusive in favor of the Trustee and the Company if made in the manner provided in this Section 1.04. 

(b) The fact and date of the execution by any Person of any such instrument may be proved by the affidavit of a witness of such execution or
by a certificate of a notary public or other officer authorized by law to take acknowledgments of deeds, certifying that the individual signing such instrument acknowledged to such Person the execution thereof. Where such execution is by a signer
acting in a capacity other than such Person’s individual capacity, such 

  
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certificate or affidavit shall also constitute sufficient proof of such Person’s authority. The fact and date of the execution of any such instrument, or the authority of the Person
executing the same, may also be proved in any other manner which the Trustee reasonably deems sufficient. 
 (c) The Company may, in the
circumstances permitted by this Indenture, fix any day as the record date for the purpose of determining the Holders entitled to give or take any request, demand, authorization, direction, notice, consent, waiver or other action, or to vote on any
action, authorized or permitted to be given or taken by Holders. If not set by the Company prior to the first solicitation of a Holder made by any Person in respect of any such action, or, in the case of any such vote, prior to such vote, the record
date for any such action or vote shall be the 30th day (or, if later, the date of the most recent list of Holders required to be provided pursuant to Section 12.01) prior to such first solicitation or vote, as the case may be. With regard to
any record date, only the Holders on such date (or their duly designated proxies) shall be entitled to give or take, or vote on, the relevant action. 

(d) The ownership of Notes shall be proved by the Register. 

(e) Any request, demand, authorization, direction, notice, consent, waiver or other action of the Holder of any Note shall bind every future
Holder of the same Note and the Holder of every Note issued upon the registration of transfer thereof or in exchange therefor or in lieu thereof in respect of anything done, omitted or suffered to be done by the Trustee or the Company in reliance
thereon, whether or not notation of such action is made upon such Note. 
 Section 1.05 Accounting Terms; Changes in GAAP 

Except as otherwise expressly provided herein, all accounting terms used herein shall be interpreted, and all financial statements and
certificates and reports as to financial matters required to be delivered to the Trustee, Collateral Trustee and/or Holders hereunder shall (unless otherwise disclosed to the Trustee, Collateral Trustee and/or the Holders in writing at the time of
delivery thereof) be prepared, in accordance with GAAP applied on a basis consistent with those used in the preparation of the latest financial statements furnished to the Trustee hereunder. All calculations made for the purposes of determining
compliance with this Indenture shall (except as otherwise expressly provided herein) be made by application of GAAP applied on a basis consistent with those used in the preparation of the annual or quarterly financial statements furnished pursuant
to Section 4.11(a) most recently delivered prior to or concurrently with such calculations. If at any time any change in GAAP would affect the computation of any financial ratio or requirement set forth herein, and either Company or the
Requisite Holders shall so request, the Trustee, the Requisite Holders and Company shall negotiate in good faith to amend such ratio or requirement to preserve the original intent thereof in light of such change in GAAP (subject to the approval of
the Requisite Holders); provided that, until so amended, (a) such ratio or requirement shall continue to be computed in accordance with GAAP prior to such change therein, and (b) Company shall provide to the Trustee and the financial
statements and other documents required under this Indenture or as reasonably requested hereunder setting forth a reconciliation between calculations of such ratio or requirement made before and after giving effect to such change in GAAP. 

  
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 Section 1.06 Notice to Holders; Waiver 

Where this Indenture provides for notice to Holders of any event, such notice shall be sufficiently given (unless otherwise herein expressly
provided) if in writing and mailed, first-class postage prepaid, to each Holder affected by such event, at such Holder’s address as it appears in the Register, or by such other means reasonably acceptable to the Holder, in each case not later
than the latest date (if any), and not earlier than the earliest date (if any), prescribed for the giving of such notice. In any case where notice to Holders is given by mail, neither the failure to mail such notice, nor any defect in any notice so
mailed, to any particular Holder shall affect the sufficiency of such notice with respect to other Holders. Where this Indenture provides for notice in any manner, such notice may be waived in writing by the Person entitled to receive such notice,
either before or after the event, and such waiver shall be the equivalent of such notice. Waivers of notice by Holders shall be filed with the Trustee, but such filing shall not be a condition precedent to the validity of any action taken in
reliance upon such waiver. Any notice shall be effective when delivered (or, if mailed, three (3) Business Days after deposit, postage prepaid, in the first class U.S. mail and, if delivered by facsimile, upon completion of transmission and
confirmation by the sender (by a telephone call to a representative of the recipient or by machine confirmation) that such transmission was received) provided that notwithstanding any other provisions set forth herein, any offer under
Section 3.14 hereof shall be deemed received by a Holder when received by such Holder. 
 In case by reason of the suspension of
regular mail service or by reason of any other cause it shall be impracticable to give such notice by mail, then such notification as shall be made with the approval of the Trustee shall constitute a sufficient notification for every purpose
hereunder. 
 In addition to the other provisions set forth in this Section 1.06, any notice or communication to a Holder of a Global
Note may be made via electronic transmission (email or fax) or otherwise through the facilities of the Depository. 
 Section 1.07
Incorporation by Reference of Trust Indenture Act 
 Whenever this Indenture refers to a provision of the Trust Indenture Act, the
provision is incorporated by reference in and made a part of this Indenture. Any terms incorporated in this Indenture that are defined by the Trust Indenture Act, by Trust Indenture Act reference to another statute or by Commission rule under the
Trust Indenture Act have the meanings so assigned to them. 
 Section 1.08 Benefits of Indenture 

Nothing in this Indenture or in the Notes, express or implied, shall give to any Person, other than the parties hereto and their respective
successors hereunder and the Holders of Notes, any benefit or any legal or equitable right, remedy or claim under this Indenture. 

  
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 ARTICLE 2 

SECURITY FORMS 

Section 2.01 Forms Generally 

(a) The Notes and the Trustee’s certificates of authentication shall be in substantially the forms set forth in Exhibits B, C and F, which
Exhibits are incorporated in and made part of this Indenture. The Notes may have notations, legends or endorsements required by law, rules of any securities exchange or Depository therefor, or usage. The Company shall provide any such notations,
legends or endorsements to the Trustee in writing. Each Note shall be dated the date of its authentication. The terms and provisions contained in the Notes shall constitute, and are hereby expressly made, a part of this Indenture, and the Company
and the Trustee, by their execution and delivery of this Indenture, expressly agree to such terms and provisions and to be bound thereby. However, to the extent any provision of any Note conflicts with the express provisions of this Indenture, the
provisions of this Indenture shall govern and be controlling. 
 (b) The Notes shall initially be issued in the form of one or more Physical
Notes, which (i) shall represent, and shall be denominated in an amount equal to the aggregate Principal Amount of, the Notes to be issued, (ii) shall be registered in the name of the Holder or its nominee, and (iii) shall be
delivered to the Holder or pursuant to the Holder’s instruction. The Notes may be issued in the form of one or more Global Notes, which (A) shall represent, and shall be denominated in an amount equal to the aggregate Principal Amount of,
the Notes to be issued in such manner, (B) shall be registered in the name of the Depository or its nominee, (C) shall be delivered to the Depository or pursuant to the Depository’s instruction, and (D) shall bear a legend (the
“Global Note Legend”) in substantially the following form: 
 THIS NOTE IS A GLOBAL NOTE WITHIN THE MEANING
OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY OR A NOMINEE THEREOF. THIS NOTE MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A NOTE REGISTERED, AND NO TRANSFER OF THIS NOTE IN WHOLE OR IN PART MAY BE
REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITORY OR A NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. 

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (“DTC”), A NEW
YORK CORPORATION, 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 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 IN AS MUCH AS THE
REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
 The aggregate Principal Amount of any Global Notes may from time to
time be increased or decreased by adjustments made on the records of the Trustee, as Custodian for the Depository, as hereinafter provided. 

  
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 (c) Any Note not registered under the Securities Act shall bear the following legend (the
“Restricted Notes Legend”) on the face thereof: 
 THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY STATE SECURITIES LAWS. NEITHER THIS NOTE NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE
ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, REGISTRATION. 
 THE HOLDER OF
THIS NOTE, BY ITS ACCEPTANCE HEREOF (1) REPRESENTS THAT (A) IT IS A “QUALIFIED INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) (A “QIB”) OR (B) IT IS NOT A U.S. PERSON, IS NOT ACQUIRING THIS
SECURITY FOR THE ACCOUNT OR BENEFIT OF A U.S. PERSON AND IS ACQUIRING THIS SECURITY IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH REGULATION S UNDER THE SECURITIES ACT AND (2) AGREES THAT IT WILL NOT, WITHIN THE TIME PERIOD REFERRED TO UNDER
RULE 144(d)(1) (TAKING INTO ACCOUNT THE PROVISIONS OF RULE 144(d) UNDER THE SECURITIES ACT, IF APPLICABLE) UNDER THE SECURITIES ACT AS IN EFFECT ON THE DATE OF THE TRANSFER OF THIS SECURITY, OFFER, RESELL OR OTHERWISE TRANSFER THIS SECURITY EXCEPT
(A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) TO A PERSON WHOM THE HOLDER REASONABLY BELIEVES IS A QIB PURCHASING FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QIB IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT OR AN AVAILABLE
EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, (C) OUTSIDE THE UNITED STATES IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE 904 UNDER THE SECURITIES ACT, (D) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY
RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE AND PROVIDED THAT PRIOR TO SUCH TRANSFER, THE TRUSTEE IS FURNISHED WITH AN OPINION OF COUNSEL ACCEPTABLE TO THE COMPANY THAT SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT) OR (E) PURSUANT
TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT AND, IN EACH CASE, IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS, AND (3) AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THIS SECURITY OR AN INTEREST HEREIN IS
TRANSFERRED (OTHER THAN A TRANSFER PURSUANT TO CLAUSE (2)(D) ABOVE) A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. 

IN CONNECTION WITH ANY TRANSFER OF THIS SECURITY OR ANY INTEREST HEREIN WITHIN THE TIME PERIOD REFERRED TO ABOVE, THE HOLDER
MUST CHECK THE APPROPRIATE BOX SET FORTH ON THE REVERSE HEREOF RELATING TO THE MANNER OF SUCH TRANSFER AND SUBMIT THIS CERTIFICATE TO THE TRUSTEE. AS USED HEREIN, THE TERMS 

  
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“OFFSHORE TRANSACTION,” “UNITED STATES” AND “U.S. PERSON” HAVE THE MEANINGS GIVEN TO THEM BY RULE 902 OF REGULATION S UNDER THE SECURITIES ACT. 

The Trustee must refuse to register any transfer of a Note bearing the Restricted Notes Legend that would violate the restrictions described in such legend.

 (d) Any temporary Note that is a Global Note issued pursuant to Regulation S shall bear a legend (the “Regulation S Temporary
Global Note Legend”) in substantially the following form: 
 THE RIGHTS ATTACHING TO THIS REGULATION S TEMPORARY
GLOBAL NOTE, AND THE CONDITIONS AND PROCEDURES GOVERNING ITS EXCHANGE FOR DEFINITIVE NOTES, ARE AS SPECIFIED IN THE INDENTURE. THE HOLDER OF THIS NOTE BY ACCEPTANCE HEREOF ALSO AGREES, REPRESENTS AND WARRANTS THAT IF IT IS A PURCHASER IN A SALE THAT
OCCURS OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S OF THE SECURITIES ACT, IT ACKNOWLEDGES THAT, UNTIL EXPIRATION OF THE “40-DAY DISTRIBUTION COMPLIANCE PERIOD” WITHIN THE MEANING OF RULE 903 OF REGULATION S, ANY OFFER OR
SALE OF THIS NOTE SHALL NOT BE MADE BY IT TO A U.S. PERSON TO OR FOR THE ACCOUNT OR BENEFIT OF A U.S. PERSON WITHIN THE MEANING OF RULE 902(k) UNDER THE SECURITIES ACT. 

Section 2.02 Form of Face of Note. The Form of Face of Note is attached hereto as Exhibit B. 

Section 2.03 Form of Reverse of Note. The Form of Reverse of Note is attached hereto as Exhibit C. 

ARTICLE 3 
 THE
SECURITIES 
 Section 3.01 Title and Terms; Payments 

(a) The aggregate Principal Amount of Notes that may be authenticated and delivered under this Indenture shall be as contemplated in the
Purchase Agreement (the “Initial Notes”), except for Notes authenticated and delivered upon registration or transfer of, or in exchange for, or in lieu of, other Notes pursuant to Sections 3.05, 3.06, 3.07, 3.08, 3.09, 3.11, 3.12,
8.05 or 14.06. Initial Notes shall be issued on the First Issue Date upon the Company’s compliance with Section 3.04. The Company may, from time to time after the First Issue Date, execute and deliver to the Trustee for authentication
Additional Notes of an unlimited aggregate principal amount, which shall include any Additional Notes permitted to be issued after the First Issue Date under the Purchase Agreement and any PIK Notes issued in respect of PIK Interest, and the Trustee
shall thereupon authenticate and deliver said Additional Notes to or upon the written order of the Company, without any further action by the Company hereunder; provided, however, that the Trustee shall be entitled to receive an
Officers’ Certificate and Opinion of Counsel as required by Section 1.02 of this Indenture. 

  
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 The Notes shall be known and designated as the “10.0% Convertible Senior Secured Notes
due 2017” of the Company. The Principal Amount shall be payable on the Maturity Date. 
 (b) The Principal Amount of Physical Notes
shall be payable at the office of the Paying Agent and at any other office or agency maintained by the Company for such purpose. Interest on Physical Notes will be payable to Holders either by check mailed to such Holders or, upon application by a
Holder to the Registrar not later than the relevant Regular Record Date for such interest payment, by wire transfer in immediately available funds to such Holder’s account within the United States, which application shall remain in effect until
the Holder notifies the Registrar to the contrary in writing. The Company will pay the principal amount of, and interest on, Global Notes in immediately available funds to The Depository Trust Company or its nominee, as the case may be, as the
registered holder of such Global Note, on each Interest Payment Date, Fundamental Change Purchase Date or other payment date, as the case may be. 

(c) Any Notes repurchased by the Company will be cancelled and no longer outstanding hereunder. 

Section 3.02 Ranking and Security 

The Notes are secured, equally and ratably, by a senior secured Lien in the Collateral pursuant to the Security Agreement and the other
Security Documents. The Notes are secured by a pledge of Collateral pursuant to the Security Documents and shall be subject to the Intercreditor Agreement. 

Section 3.03 Denominations 

The Notes shall be issuable only in registered form without coupons and in minimum denominations of $1,000 and, if PIK Notes are issued, in
minimum denominations of $1.00. 
 Section 3.04 Execution, Authentication, Delivery and Dating 

(a) The Notes shall be executed on behalf of the Company by its Chief Executive Officer, its President, its Chief Financial Officer or any of
its Vice Presidents. 
 (b) Notes bearing the manual or facsimile signatures of individuals who were at any time the proper officers of the
Company shall bind the Company, notwithstanding that such individuals or any of them have ceased to hold such offices prior to the authentication and delivery of such Notes or did not hold such offices at the date of such Notes. 

(c) Subject to Section 3.01, at any time and from time to time after the execution and delivery of this Indenture, the Company may
deliver Notes executed by the Company to the Trustee for authentication, together with a Company Order for the authentication and delivery of such Notes. The Company Order shall specify the amount of Notes to be authenticated, and shall further
specify the amount of such Notes to be issued as Global Notes or as Physical Notes. The Trustee in accordance with such Company Order shall authenticate and deliver such Notes as in this Indenture provided and not otherwise. 

(d) Each Note shall be dated the date of its authentication. 

  
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 (e) No Note shall be entitled to any benefit under this Indenture or be valid or obligatory for
any purpose unless there appears on such Note a certificate of authentication substantially in the form provided for in Exhibit F of this Indenture executed by the Trustee by manual signature, and such certificate upon any Note shall be conclusive
evidence, and the only evidence, that such Note has been duly authenticated and delivered hereunder. 
 Section 3.05 Temporary
Notes 
 (a) Pending the preparation of definitive Notes, the Company may execute, and upon Company Order the Trustee shall authenticate
and deliver, temporary Notes that are printed, lithographed, typewritten, mimeographed or otherwise produced, in any authorized denomination, substantially of the tenor of the definitive Notes in lieu of which they are issued and with such
appropriate insertions, omissions, substitutions and other variations as the officers of the Company executing such Notes may determine, as evidenced by their execution of such Notes; provided, that any such temporary Notes shall bear legends
on the face of such Notes as set forth in Section 2.02. 
 (b) If temporary Notes are issued, the Company will cause definitive Notes
to be prepared without unreasonable delay. After the preparation of definitive Notes, the temporary Notes shall be exchangeable for definitive Notes upon surrender of the temporary Notes at any office or agency of the Company designated pursuant to
Section 4.02, without charge to the Holder. Upon surrender for cancellation of any one or more temporary Notes, the Company shall execute and the Trustee shall authenticate and deliver in exchange therefor a like Principal Amount of Physical
Notes of authorized denominations. Until so exchanged, the temporary Notes shall in all respects be entitled to the same benefits under this Indenture as Physical Notes. 

Section 3.06 Registration, Registrar and Paying Agent; Registration of Transfer and Exchange 

(a) The Company shall maintain (i) an office or agency where Notes may be presented for registration of transfer or for exchange
(including any co-registrar, the “Registrar”) and (ii) an office or agency where Notes may be presented for payment (“Paying Agent”). The Registrar shall keep a register of the Notes and of their transfer and
exchange (the register maintained by the Registrar and in any other office or agency designated pursuant to Section 4.02 being herein sometimes collectively referred to as the “Register”). The Company may appoint one or more
co-registrars and one or more additional paying agents. The term “Paying Agent” includes any additional paying agent. The Company may change any Paying Agent or Registrar without prior notice to any Holder of a Note. The Company
shall notify the Trustee in writing and the Trustee shall notify the Holders of the Notes of the name and address of any agent not a party to this Indenture. The Company may act as Paying Agent or Registrar. The Company shall enter into an
appropriate agency agreement with any agent not a party to this Indenture and such agreement shall implement the provisions hereof that relate to such Agent. The Company initially appoints the Trustee as Registrar, Paying Agent and agent for service
of notices and demands in connection with the Notes. 
 Upon surrender for registration of transfer of any Note at an office or agency of
the Company designated pursuant to Section 4.02 for such purpose, the Company shall execute, and 

  
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the Trustee shall authenticate and deliver, in the name of the designated transferee or transferees, one or more new Notes of any authorized denominations and of a like aggregate Principal Amount
and tenor, each such Note bearing such restrictive legends as may be required by this Indenture (including Sections 2.02, 3.07 and 3.11). 

At the option of the Holder and subject to the other provisions of Section 3.07 and to Section 3.11, Notes may be exchanged for
other Notes of any authorized denominations and of a like aggregate Principal Amount and tenor, upon surrender of the Notes to be exchanged at such office or agency. Whenever any Notes are so surrendered for exchange, the Company shall execute, and
the Trustee shall authenticate and deliver, the Notes which the Holder making the exchange is entitled to receive. 
 All Notes issued upon
any registration of transfer or exchange of Notes shall be the valid obligations of the Company, evidencing the same debt, and entitled to the same benefits under this Indenture, as the Notes surrendered upon such registration of transfer or
exchange. 
 Every Note presented or surrendered for registration of transfer or for exchange shall (i) if so required by the Company
or the Trustee, be duly endorsed, or be accompanied by a written instrument of transfer in form satisfactory to the Company and the Registrar duly executed, by the Holder thereof or his attorney duly authorized in writing and (ii) be
accompanied by such forms and certifications, duly executed by the assignee, as are required pursuant to Section 6.05. As a condition to the registration of transfer of any Restricted Notes, the Company or the Trustee may require evidence
satisfactory to them as to the compliance with the restrictions set forth in the legend on such Notes. 
 No service charge shall be made
for any registration of transfer or exchange of Notes, but the Company and the Registrar may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any registration of transfer or
exchange of Notes, other than exchanges pursuant to Section 3.05 not involving any transfer. 
 (b) Neither the Company nor the
Registrar shall be required to exchange or register a transfer of any Note in the circumstances set forth in Section 3.11(a)(iv). Neither any members of, or participants in, the Depository (collectively, the “Agent Members”)
nor any other Persons on whose behalf any Agent Member may act shall have any rights under this Indenture with respect to any Global Note registered in the name of the Depository or any nominee thereof, or under any such Global Note, and the
Depository or such nominee, as the case may be, may be treated by the Company, the Guarantors, the Trustee and any agent of the Company, the Guarantors or the Trustee as the absolute owner and Holder of such Global Note for all purposes whatsoever.
The Trustee shall have no responsibility or obligation to any Agent Members or any other Person on whose behalf Agent Members may act with respect to (i) any ownership interests in the Global Note, (ii) the accuracy of the records of the
Depository or its nominee, (iii) any notice required hereunder or (iv) any payments under or with respect to the Global Note. Notwithstanding the foregoing, nothing herein shall prevent the Company, the Guarantors, the Trustee or any agent
of the Company, the Guarantors or the Trustee from giving effect to any written certification, proxy or other authorization furnished by the Depository or such nominee, as the case may be, or impair, as between the Depository, its Agent Members and
any other Person on whose behalf an Agent Member may act, the operation of customary practices of such 

  
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Persons governing the exercise of the rights of a Holder of any Note. The registered Holder of a Global Note may grant proxies and otherwise authorize any Person, including Agent Members and
Persons that may hold interests through Agent Members, to take any action that a Holder is entitled to take under this Indenture or the Notes. 

Section 3.07 Transfer Restrictions 

(a) Restricted Notes. 

(i) Every Note (and all securities issued in exchange therefor or substitution thereof, except any shares of Common Stock
issued upon conversion thereof or in settlement of a Make-Whole Payment in shares of Common Stock) that bears, or that is required under this Section 3.07 to bear, the Restricted Notes Legend will be deemed to be a “Restricted
Note.” Each Restricted Note will be subject to the restrictions on transfer set forth in this Indenture (including in the Restricted Notes Legend) and, if the Company so elects, will bear the restricted CUSIP number for the Notes unless
such restrictions on transfer are eliminated or otherwise waived by written consent of the Company, and each Holder of a Restricted Note, by such Holder’s acceptance of such Restricted Note, will be deemed to be bound by the restrictions on
transfer applicable to such Restricted Note. 
 (ii) Any Note (or any security issued in exchange therefor or substitution
thereof, except any shares of Common Stock issued upon the conversion thereof or in settlement of a Make-Whole Payment in shares of Common Stock) will bear the Restricted Notes Legend unless: 

(A) such Note, since last held by the Company or an affiliate of the Company (within the meaning of Rule 144), if ever, was
transferred (1) to a Person other than (x) the Company or (y) an affiliate of the Company (within the meaning of Rule 144) or a Person that was an affiliate of the Company within the three months immediately preceding such transfer
and (2) pursuant to a registration statement that was effective under the Securities Act at the time of such transfer; 

(B) such Note was transferred (1) to a Person other than (x) the Company or (y) an affiliate of the Company
(within the meaning of Rule 144) or a Person that was an affiliate of the Company within the three months immediately preceding such transfer and (2) pursuant to the exemption from registration provided by Rule 144 or any similar provision then
in force under the Securities Act; or 
 (C) the Company delivers written notice to the Trustee and the Registrar stating
that the Restricted Notes Legend may be removed from such Note. 
 (iii) In addition, no transfer of any Note will be
registered by the Registrar unless the transferring Holder delivers the form of assignment set forth on the Note, with the appropriate box checked, to the Trustee. 

  
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 (iv) Any Note (or any security issued in exchange therefor or substitution
thereof, except any shares of Common Stock issued upon the conversion thereof) will bear the Restricted Notes Legend at any time the Company reasonably determinates that, to comply with law, such Note (or such securities issued in exchange for or
substitution of a Note) must bear the Restricted Notes Legend. 
 (b) Restricted Stock. 

(i) Every share of Common Stock that bears, or that is required under this Section 3.07 to bear, the Restricted Stock
Legend will be deemed to be “Restricted Stock.” Each share of Restricted Stock will be subject to the restrictions on transfer set forth in this Indenture (including in the Restricted Stock Legend) and will bear a restricted CUSIP
number unless such restrictions on transfer are eliminated or otherwise waived by written consent of the Company, and each Holder of Restricted Stock, by such Holder’s acceptance of Restricted Stock, will be deemed to be bound by the
restrictions on transfer applicable to such Restricted Stock. 
 (ii) Any share of Common Stock issued upon the conversion of
a Note will bear the Restricted Stock Legend unless: 
 (A) such share of Common Stock was transferred (1) to a Person
other than (x) the Company or (y) an affiliate of the Company (within the meaning of Rule 144) or a Person that was an affiliate of the Company within the three months immediately preceding such transfer and (2) pursuant to a
registration statement that was effective under the Securities Act at the time of such conversion; 
 (B) such share of
Common Stock was transferred (1) to a Person other than (x) the Company or (y) an affiliate of the Company (within the meaning of Rule 144) or a Person that was an affiliate of the Company within the three months immediately preceding
such transfer and (2) pursuant to the exemption from registration provided by Rule 144 or any similar provision then in force under the Securities Act; 

(C) such Note, regardless of whether bearing the Restricted Notes Legend, was not, at the time of its conversion, required to
bear the Restricted Notes Legend pursuant to Section 3.07(a) and such Common Stock was issued to a Person other than (1) the Company or (2) an affiliate of the Company; or 

(D) the Company delivers written notice to the Trustee, the Registrar and the transfer agent for the Common Stock stating that
such share of Common Stock need not bear the Restricted Stock Legend. 
 (iii) Any share of Common Stock will bear the
Restricted Stock Legend at any time the Company reasonably determinates that, to comply with law, such share of Common Stock must bear the Restricted Stock Legend. 

  
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 (c) As used in this Section 3.07, the term “transfer” means any sale, pledge,
transfer, loan, hypothecation or other disposition whatsoever of any Restricted Note, any interest therein or any Restricted Stock. 
 (d)
Additionally, any transfer of the Notes or any beneficial interests in the Global Notes by the Initial Purchasers shall be subject to the restrictions and conditions specified in the Purchase Agreement. Any transfer of the Notes, or any beneficial
interests in the Global Notes, by the Initial Purchasers that is not made in compliance with the conditions and restrictions set forth in the Purchase Agreement shall be absolutely void ab initio. Notwithstanding the foregoing, upon the occurrence
and during the continuation of any Significant Event of Default or the acceleration of the Obligations after the occurrence of any Event of Default (which acceleration has not been rescinded), such restrictions regarding the transfer of the Notes
set forth in the Purchase Agreement shall not apply to restrict the Holders in any manner. 
 Section 3.08 Expiration of
Restrictions 
 (a) Physical Notes. Any Physical Note (or any security issued in exchange or substitution therefor) that does not
constitute a Restricted Note may be exchanged for a new Note or Notes of like tenor and aggregate Principal Amount that do not bear the Restricted Notes Legend required by Section 3.07. To exercise such right of exchange, the Holder of such
Note must surrender such Note in accordance with the provisions of Section 3.11 and deliver any additional documentation reasonably required by the Company, the Trustee or the Registrar in connection with such exchange. 

(b) Significant Event of Default. Upon the occurrence and during the continuation of any Significant Event of Default or the
acceleration of the Obligations after the occurrence of any Event of Default (which acceleration has not been rescinded), such restrictions regarding the transfer of the Notes set forth in the Purchase Agreement shall not apply to restrict the
Holders in any manner. 
 Section 3.09 Mutilated, Destroyed, Lost and Stolen Notes 

(a) If any mutilated Note is surrendered to the Trustee, the Company shall execute and the Trustee shall authenticate and deliver in exchange
therefor a new Note of like tenor and Principal Amount and bearing a number not contemporaneously outstanding. 
 If there shall be
delivered to the Company and the Trustee (i) evidence to their satisfaction of the destruction, loss or theft of any Note and (ii) such security or indemnity as may be required by them sufficient in the judgment of the Trustee and the
Company to protect the Company, the Trustee or any agent from any loss which any of them may suffer if a Note is replaced, then, in the absence of notice to the Company or the Trustee that such Note has been acquired by a protected purchaser, the
Company shall execute and the Trustee shall authenticate and deliver, in lieu of any such destroyed, lost or stolen Note, a new Note of like tenor and Principal Amount and bearing a number not contemporaneously outstanding. 

In case any such mutilated, destroyed, lost or stolen Note has become or is about to become due and payable, the Company in its discretion
may, instead of issuing a new Note, pay such Note. 

  
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 Upon the issuance of any new Note under this Section 3.09, the Company may require payment
by the Holder of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto and any other expenses (including the fees and expenses of the Trustee) connected therewith. 

Every new Note issued pursuant to this Section 3.09 in lieu of any destroyed, lost or stolen Note shall constitute an original additional
contractual obligation of the Company, whether or not the destroyed, lost or stolen Note shall be at any time enforceable by anyone, and shall be entitled to all the benefits of this Indenture equally and proportionately with any and all other Notes
duly issued hereunder. 
 The provisions of this Section are exclusive and shall preclude (to the extent lawful) all other rights and
remedies with respect to the replacement or payment of mutilated, destroyed, lost or stolen Notes. 
 (b) Notes outstanding at any time are
all Notes authenticated by the Trustee except for those canceled by it, those delivered to it for cancellation and those described in this Section as not outstanding. A Note does not cease to be outstanding because the Company, or an Affiliate of
the Company, holds the Note. 
 If a Note is replaced pursuant to clause (a) of this Section 3.09, it ceases to be outstanding
unless the Trustee and the Company receive proof satisfactory to them that the replaced security is held by a protected purchaser. 
 If the
Paying Agent segregates and holds in trust, in accordance with this Indenture, on a redemption date, other than in connection with a mandatory redemption under Section 3.14, or the Maturity Date money sufficient to pay all the Principal Amount
plus accrued and unpaid interest and any other amounts payable under this Indenture (including but not limited to any outstanding accrued but not yet capitalized PIK Interest and all outstanding capitalized PIK Interest and any outstanding
Make-Whole Payment) on all the outstanding Notes (or portions thereof) to be redeemed or maturing, as the case may be, and the Paying Agent is not prohibited from paying such money to the Holders on that date pursuant to the terms of this Indenture,
then on and after that date the Principal Amount of such Notes (or portions thereof) cease to be outstanding and interest on them ceases to accrue. 

Section 3.10 Persons Deemed Owners 

Prior to due presentment of a Note for registration of transfer, the Company, the Guarantors, the Trustee, the Registrar and any agent of the
Company, the Guarantors, the Trustee or the Registrar may treat the Person in whose name such Note is registered as the owner of such Note for the purpose of receiving payment of the principal of such Note and for all other purposes whatsoever,
whether or not such Note be overdue, and neither the Company, the Guarantors, the Trustee, the Registrar nor any agent of the Company, the Guarantors, the Trustee or the Registrar shall be affected by notice to the contrary. 

  
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 Section 3.11 Transfer and Exchange 

(a) Provisions Applicable to All Transfers and Exchanges. 

(i) Subject to the restrictions set forth in this Section 3.11, Physical Notes and beneficial interests in Global Notes
may be transferred or exchanged from time to time as desired, and each such transfer or exchange will be noted by the Registrar in the Register. The foregoing to the contrary notwithstanding, any transfer of the Notes or any beneficial interests in
the Global Notes by the Initial Purchasers is subject to the restrictions and conditions specified in the Purchase Agreement. Any transfer of the Notes, or any beneficial interests in the Global Notes by the Initial Purchasers that is not made in
compliance with the conditions and restrictions set forth in the Purchase Agreement, shall be absolutely void ab initio. Notwithstanding the foregoing, upon the occurrence and during the continuation of any Significant Event of Default or the
acceleration of the Obligations after the occurrence of any Event of Default (which acceleration has not been rescinded), such restrictions regarding the transfer of the Notes set forth in the Purchase Agreement shall not apply to restrict the
Holders in any manner. 
 (ii) All Notes issued upon any registration of transfer or exchange in accordance with this
Indenture will be the valid obligations of the Company, evidencing the same debt, and entitled to the same benefits under this Indenture as the Notes surrendered upon such registration of transfer or exchange. 

(iii) No service charge will be imposed on any Holder of a Physical Note or any owner of a beneficial interest in a Global Note
for any exchange or registration of transfer, but each of the Company, the Trustee or the Registrar may require such Holder or owner of a beneficial interest to pay a sum sufficient to cover any transfer tax, assessment or other governmental charge
imposed in connection with such registration of transfer or exchange. 
 (iv) Unless the Company specifies otherwise, none of
the Company, the Trustee, the Registrar or any co-Registrar will be required to exchange or register a transfer of any Note (i) that has been surrendered for conversion or (ii) as to which a Fundamental Change Purchase Notice has been
delivered and not withdrawn, in each case, except to the extent any portion of such Note is not subject to the foregoing. 

(v) The Trustee will have no obligation or duty to monitor, determine or inquire as to compliance with any restrictions on
transfer imposed under this Indenture or under applicable law with respect to any transfer of any interest in any Note (including any transfers between or among Depository participants or beneficial owners of interests in any Global Note) other than
to require delivery of such certificates and other documentation or evidence as are expressly required by, and to do so if and when expressly required by the terms of, this Indenture, and to examine the same to determine substantial compliance as to
form with the express requirements hereof. 
 (b) In General; Transfer and Exchange of Beneficial Interests in Global Notes. So long
as the Notes are eligible for book-entry settlement with the Depository, unless otherwise required by law and except to the extent required by Section 3.11(c): 

(i) all Notes may be represented by one or more Global Notes; 

  
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 (ii) every transfer and exchange of a beneficial interest in a Global Note will
be effected through the Depository in accordance with the Applicable Procedures and the provisions of this Indenture (including the restrictions on transfer set forth in Section 3.07); 

(iii) each Global Note may be transferred only as a whole and only (A) by the Depository to a nominee of the Depository,
(B) by a nominee of the Depository to the Depository or to another nominee of the Depository, or (C) by the Depository or any such nominee to a successor Depository or a nominee of such successor Depository; and 

(iv) if the proposed transfer is a transfer of a beneficial interest in one Global Note to a beneficial interest in another
Global Note, the Registrar shall reflect on its books and records the date and an increase in the Principal Amount of the Global Notes to which such interest is being transferred in an amount equal to the Principal Amount of the beneficial interest
to be so transferred, and the Registrar, in accordance with the Applicable Procedures, shall reflect on its books and records the date and a corresponding decrease in the Principal Amount of the Global Notes from which such beneficial interest is
being transferred. 
 (c) Transfer and Exchange of Global Notes. 

(i) Notwithstanding any other provision of this Indenture, each Global Note will be exchanged for Physical Notes if the
Depository delivers notice to the Company that: 
 (A) the Depository is unwilling or unable to continue to act as
Depository; or 
 (B) the Depository is no longer registered as a clearing agency under the Exchange Act; 

and, in each case, the Company promptly delivers a copy of such notice to the Trustee and the Company fails to appoint a successor Depository
within ninety (90) days after receiving notice from the Depository. 
 In each such case, each Global Note will be deemed surrendered
to the Trustee for cancellation, and the Trustee will cause each Global Note to be cancelled in accordance with the Applicable Procedures, and the Company, in accordance with Section 3.04, will promptly execute, and, upon receipt of a Company
Order, the Trustee will, in accordance with Section 3.04, will promptly authenticate and deliver, for each beneficial interest in each Global Note so exchanged, an aggregate Principal Amount of Physical Notes equal to the aggregate Principal
Amount of such beneficial interest, registered in such names and in such authorized denominations as the Depository specifies, and bearing any legends that such Physical Notes are required to bear under Section 3.07. 

(ii) In addition, if (x) the Company, in its discretion, subject to the Depository’s rules, determines that Global
Notes (in whole but not in part) will be exchangeable for Physical Notes or (y) an Event of Default has occurred and is 

  
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continuing, in each case, any owner of a beneficial interest in a Global Note may exchange such beneficial interest for Physical Notes by delivering a written request to the Registrar. 

In such case, (A) the Registrar will deliver notice of such request to the Company and the Trustee, which notice will identify the owner of the
beneficial interest to be exchanged, the aggregate Principal Amount of such beneficial interest and the CUSIP of the relevant Global Note; (B) the Company will, in accordance with Section 3.04, promptly execute, and, upon receipt of a
Company Order, the Trustee, in accordance with Section 3.04, will promptly authenticate and deliver, to such owner, for the beneficial interest so exchanged by such owner, Physical Notes registered in such owner’s name having an aggregate
Principal Amount equal to the aggregate Principal Amount of such beneficial interest and bearing any legends that such Physical Notes are required to bear under Section 3.07, and (C) the Registrar, in accordance with the Applicable
Procedures, will cause the Principal Amount of such Global Note to be decreased by the aggregate Principal Amount of the beneficial interest so exchanged; provided that in no event shall any temporary Note that is a Global Note issued
pursuant to Regulation S be exchanged by the Company for Physical Notes prior to (A) the expiration of the Restricted Period and (B) the receipt by the Registrar of any certificate identified by the Company and its counsel to be required
pursuant to Rule 903 or Rule 904 under the Securities Act. In any such case, the Company will notify the Trustee in writing that, upon surrender by Agent Members, certificated Notes will be issued to each Person that such Agent Member and
the Depository jointly identify as being the beneficial owner of the related Notes. If all of the beneficial interests in a Global Note are so exchanged, such Global Note will be deemed surrendered to the Trustee for cancellation, and the Trustee
will cause such Global Note to be cancelled in accordance with the Applicable Procedures. 
 (d) Transfer and Exchange of Physical
Notes. 
 (i) A Holder may transfer a Physical Note by: (A) surrendering such Physical Note for registration of
transfer to the Registrar, together with any endorsements or instruments of transfer required by any of the Company, the Trustee or the Registrar; (B) if such Physical Note is a Restricted Note, delivering any documentation that the Company,
the Trustee or the Registrar reasonably requires to ensure that such transfer complies with Section 3.07 and any applicable securities laws; and (C) satisfying all other requirements for such transfer set forth in this Section 3.11
and Section 3.07. Upon the satisfaction of conditions (A), (B) and (C), the Company, in accordance with Section 3.04, will promptly execute and deliver to the Trustee, and the Trustee, upon receipt of a Company Order, will, in
accordance with Section 3.04, promptly authenticate and deliver, in the name of the designated transferee or transferees, one or more new Physical Notes, of any authorized denominations, having like aggregate Principal Amount and bearing any
restrictive legends required by Section 3.07. The foregoing to the contrary notwithstanding, any transfer of the Notes or any beneficial interests in the Global Notes by the Initial Purchasers is subject to the restrictions and conditions
specified in the Purchase Agreement. Any transfer of the Notes or any beneficial interests in the Global Notes by the Initial Purchasers that is not made in compliance with the conditions and restrictions set forth in the Purchase Agreement shall be
absolutely void ab initio. Notwithstanding the foregoing, upon the occurrence and during the continuation of any 

  
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Significant Event of Default or the acceleration of the Obligations after the occurrence of any Event of Default (which acceleration has not been rescinded), the restrictions set forth in the
Purchase Agreement shall not apply to restrict the Holders in any manner. 
 (ii) A Holder may exchange a Physical Note for
other Physical Notes of any authorized denominations and aggregate Principal Amount equal to the aggregate Principal Amount of the Notes to be exchanged by surrendering such Notes, together with any endorsements or instruments of transfer required
by any of the Company, the Trustee or the Registrar, at any office or agency maintained by the Company for such purposes pursuant to Section 4.02. Whenever a Holder surrenders Notes for exchange, the Company, in accordance with
Section 3.04, will promptly execute and deliver to the Trustee, and the Trustee, upon receipt of a Company Order, will, in accordance with Section 3.04, promptly authenticate and deliver the Notes that such Holder is entitled to receive,
bearing registration numbers not contemporaneously outstanding and any restrictive legends that such Physical Notes are to bear under Section 3.07. 

If Global Notes are issued, a Holder may transfer or exchange a Physical Note for a beneficial interest in a Global Note (except that the
Initial Purchasers cannot exchange for a Global Note, any portion of a Physical Note which is then subject to the transfer limitations set forth in the Purchase Agreement) by (A) surrendering such Physical Note for registration of transfer or
exchange, together with any endorsements or instruments of transfer required by any of the Company, the Trustee or the Registrar, at any office or agency maintained by the Company for such purposes pursuant to Section 4.02; (B) if such
Physical Note is a Restricted Note, delivering any documentation the Company, the Trustee or the Registrar reasonably require to ensure that such transfer complies with Section 3.07 and any applicable securities laws; (C) satisfying all
other requirements for such transfer set forth in this Section 3.11 and Section 3.07, and, with respect to the Initial Purchasers, the restrictions and conditions set forth in the Purchase Agreement; and (D) providing written
instructions to the Trustee to make, or to direct the Registrar to make, an adjustment in its books and records with respect to the applicable Global Note to reflect an increase in the aggregate Principal Amount of the Notes represented by such
Global Note, which instructions will contain information regarding the Depository account to be credited with such increase. Upon the satisfaction of conditions (A), (B), (C) and (D), the Trustee will cancel such Physical Note and cause, or
direct the Registrar to cause, in accordance with the Applicable Procedures, the aggregate Principal Amount of Notes represented by such Global Note to be increased by the aggregate Principal Amount of such Physical Note, and will credit or cause to
be credited the account of the Person specified in the instructions provided by the exchanging Holder in an amount equal to the aggregate Principal Amount of such Physical Note. If no Global Notes are then outstanding, the Company, in accordance
with Section 3.04, will promptly execute and deliver to the Trustee, and the Trustee, upon receipt of a Company Order, will, in accordance with Section 3.04, authenticate, a new Global Note in the appropriate aggregate Principal Amount.
The foregoing to the contrary notwithstanding, any transfer of the Notes or any beneficial interests in the Global Notes by the Initial Purchasers is subject to the restrictions and conditions specified in the Purchase Agreement. Any transfer of the
Notes or any beneficial interests in the Global Notes by the Initial Purchasers that is not made in compliance with the conditions and restrictions set forth in the Purchase Agreement shall be absolutely void ab initio. Notwithstanding the
foregoing, upon the occurrence and during the continuation of any Significant Event of Default or the acceleration of the Obligations after the occurrence of any 

  
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Event of Default (which acceleration has not been rescinded), such restrictions regarding the transfer of the Notes set forth in the Purchase Agreement shall not apply to restrict the Holders in
any manner. 
 The Registrar shall retain, in accordance with its customary procedures, copies of all letters, notices and other written
communications received pursuant to this Section 3.11. The Company shall have the right to inspect and make copies of all such letters, notices or other written communications at any reasonable time upon the giving of reasonable written notice
to the Registrar. 
 Section 3.12 Cancellation 

The Company at any time may deliver to the Trustee for cancellation any Notes previously authenticated and delivered hereunder that the Company
may have acquired in any manner whatsoever, and may deliver to the Trustee for cancellation any Notes previously authenticated hereunder which the Company has not issued and sold. The Registrar and Paying Agent shall forward to the Trustee any Notes
surrendered to them for registration of transfer, exchange or payment. The Trustee shall cancel all Notes surrendered for registration of transfer, exchange, payment, purchase, repurchase, conversion (pursuant to Article 7 hereof) or cancellation in
accordance with its customary practices (subject to the record retention requirements of the Exchange Act), unless the Company directs canceled Notes to be returned to it. If the Company shall acquire any of the Notes, such acquisition shall not
operate as a redemption or satisfaction of the indebtedness represented by such Notes unless and until the same are delivered to the Trustee for cancellation. The Notes so acquired, while held by or on behalf of the Company or any of its
Subsidiaries, shall not entitle the Holder thereof to convert the Notes. The Company may not issue new Notes to replace Notes it has paid in full or delivered to the Trustee for cancellation. 

Section 3.13 CUSIP Numbers 

In issuing the Notes, the Company may use “CUSIP” numbers (if then generally in use); provided that any notice may state that no
representation is made as to the correctness of such numbers either as printed on the Notes or as contained in any notice of a redemption and that reliance may be placed only on the other identification numbers printed on the Notes, and any such
redemption shall not be affected by any defect in or omission of such numbers. The Company will promptly notify the Trustee of any change in the “CUSIP” numbers. 

Section 3.14 Mandatory Redemption 

Subject to the terms and conditions of the Intercreditor Agreement, the Company shall be obligated to offer to redeem and, if applicable, redeem the Notes and
other Obligations as follows: 
 (a) Asset Sales 

(i) Not later than fifteen (15) Business Days following the receipt of any Net Cash Proceeds of any Disposition of any
Property of any Credit Party (except for Dispositions of the type described in Section 3.14(c) and other than with respect to the 

  
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sale of all or any portion of the Property located at 502 South Walnut Ave, Luverne, MN 56156) now owned or hereafter acquired, the Company shall make a written offer to the Holders (by
delivering such offer to the Collateral Trustee who shall at the expense of the Company (x) promptly deliver such offer to each Holder and (y) thereafter notify the Company when the Collateral Trustee has delivered such notice to the
Holders) to apply 100% of such Net Cash Proceeds to redeem the Obligations, if any are then outstanding, in accordance with Section 3.14(e) and Section 3.14(f) below, and each Holder shall have thirty (30) days after it receives such
written offer from the Company (or the Collateral Trustee, as applicable) to determine whether to accept its Pro Rata Share of such redemption offer (failure to respond within such thirty (30) day period shall be construed as acceptance of such
redemption offer by such Holder); provided that no such redemption (or offer to redeem the Obligations) shall be required under this Section 3.14(a) with respect to (A) the Disposition of Property that constitutes a Casualty
Event, (B) Dispositions for fair market value resulting in no more than $100,000 in Net Cash Proceeds in any Disposition (or series of related Dispositions) to the extent that the aggregate Net Cash Proceeds from all of such Dispositions does
not exceed $200,000 per year, (C) any Disposition to the extent no Obligations are then outstanding on the date of receipt of such Net Cash Proceeds, (D) Dispositions permitted by Sections 4.32(b) other than Sections 4.32(b)(vi) and
4.32(b)(xxiv) (other than in regards to joint ventures that constitute Unrestricted Subsidiaries) (for the avoidance of doubt, clauses (B) and (C) of this sentence shall not include any Disposition involving the Property located at 502
South Walnut Ave, Luverne, MN 56156), or (E) a Fundamental Change that constitutes a Disposition; and provided further that other than with respect to the sale of all or any portion of the Property located at 502 South Walnut Ave, Luverne, MN
56156, so long as no Default or Event of Default shall have occurred and be continuing or arise therefrom, the Company shall have the option upon written notice stating its intention to the Collateral Trustee and the Holders (or by filing materials
with the Commission stating the Company’s intention and contemporaneously delivering such materials to the Collateral Trustee and the Holders) within fifteen (15) Business Days of receipt of Net Cash Proceeds from any Disposition, directly
or through one or more Credit Party, to invest or commit to invest such Net Cash Proceeds in an amount such that the aggregate amount of all Net Cash Proceeds from any Disposition reinvested as described below pursuant to this proviso (and not
applied to the Obligations pursuant to this Section 3.14(a)) shall not exceed an amount equal to $20,000,000 in the aggregate through the Maturity Date, within one (1) year of receipt thereof to the costs and replacement of the properties
or assets that are the subject of such Disposition or the cost of purchase or construction of other assets useful in the business of the Credit Parties or of the general type used in the business of the Credit Parties, in each case, to the extent
that the replacement properties and assets and/or such other assets so purchased or constructed constitute Collateral subject to the Lien granted pursuant to the Security Documents in favor of the Collateral Trustee, for its benefit and for the
benefit of the other Secured Parties in accordance with Sections 4.17, 4.20, 4.21, and 4.41, including through Acquisitions permitted hereunder provided that if any amount is so committed to be reinvested within such one-year period,
but is not reinvested within the later to occur of (x) six (6) months of the date of such commitment and (y) the end of such one-year period, the Company shall offer to redeem the Obligations in accordance with this
Section 3.14(a) in accordance with the procedures outlined above without giving further effect to such reinvestment right (to the extent that the Holders have accepted the redemption offer). 

  
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 (ii) Each written offer to redeem the Obligations delivered to Holders in
accordance with Section 3.14(a)(i) shall specify the section of this Indenture pursuant to which the redemption shall occur, the proposed redemption date, the principal amount of the Notes to be redeemed and the amount of accrued interest due
in connection therewith. Each redemption of any or all of the Obligations shall be applied according to Section 3.14(e). Redemptions shall be accompanied by accrued and unpaid interest to, but not including, the redemption date. If any Holder
accepts such offer, subject to Section 3.14(e) hereof, the Credit Parties shall pay to the Collateral Trustee, for the benefit of such Holder, such Holder’s Pro Rata Share of the aggregate redemption price offered to Holders within one
(1) Business Day after the thirty (30) day period after such Holder receives the offer from the Company or the Collateral Trustee, as applicable, and each such redemption shall be accompanied by a written notice to the Collateral Trustee
specifying the provision pursuant to which the redemption is being made and the amount of principal and interest being paid. All offers to redeem the Obligations under this Section 3.14(a) shall be made on a pro rata basis based upon each
Holder’s Pro Rata Share (with respect to Global Notes, such offers will be made pursuant to the Applicable Procedures that most nearly approximate a pro rata selection). For the avoidance of doubt, the Company shall be excused from making an
offer to redeem the Obligations under Section 3.14(a)(i) to the extent that it has delivered written notice to the Collateral Trustee within fifteen (15) Business Days of receipt of Net Cash Proceeds from such Disposition stating its
intention to reinvest the Net Cash Proceeds as set forth in such Section 3.14(a)(i) (or by filing materials with the Commission stating the Company’s intention and contemporaneously delivering such materials to the Collateral Trustee)
provided that (i) the Company is otherwise entitled to invest or reinvest the Net Cash Proceeds pursuant to Section 3.14(a)(i) hereof and (ii) this sentence shall not be construed to limit the Company’s obligation to offer to
redeem the Obligations to the extent that the Company fails to invest the applicable Net Cash Proceeds within the time periods set forth in Section 3.14(a)(i). 

(iii) Without limiting or otherwise modifying the provisions of Section 4.32 hereof, if all or any portion of the Property
located at 502 South Walnut Ave, Luverne, MN 56156 is subject to a Disposition, within fifteen (15) Business Days after the Net Cash Proceeds from such Disposition are received, the Company shall make a written offer to each Holder (by
delivering such offer to the Collateral Trustee who shall at the expense of the Company (x) promptly deliver such offer to each Holder and (y) thereafter notify the Company when the Collateral Trustee has delivered such notice to the
Holders) to apply 100% of such Net Cash Proceeds from such Disposition to redeem the Obligations, if any are then outstanding, in accordance with Section 3.14(e) and Section 3.14(f) below, and each Holder shall have thirty (30) days
after it receives such written offer from the Company (or the Collateral Trustee, as applicable) to determine whether to accept its Pro Rata Share of such redemption offer (failure to respond within such thirty (30) day period shall be
construed as acceptance of such redemption offer by such Holder) provided that no such redemption (or offer to redeem Obligations) shall be required under this Section 3.14(a)(iii) with respect to (A) Dispositions of Property that

  
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constitute Casualty Events, (B) Dispositions for fair market value resulting in no more than $500,000 in Net Cash Proceeds in any Disposition (or series of related Dispositions) to the
extent that the aggregate Net Cash Proceeds from all of such Dispositions does not exceed $2,000,000 per year, (C) Dispositions permitted by Section 4.32 (other than 4.32(b)(iii) or (vi)), or (D) a Fundamental Change constituting a
Disposition. Any of such Net Cash Proceeds that are not so applied to the Obligations in accordance with this Section 3.14(a)(iii) shall be invested, reinvested or applied, to the costs of replacement of the properties or assets that are the
subject of such Disposition or the cost of purchase or construction of other assets useful in the business of the Credit Parties or of the general type used in the business of the Credit Parties provided that all of such replacement properties and
assets and/or such other assets so purchased or constructed shall constitute Collateral subject to the Lien granted pursuant to the Security Documents in favor of the Collateral Trustee, for the benefit of the Secured Parties in accordance with
Sections 4.17, 4.20, 4.21, and 4.41. 
 (iv) Without limiting or otherwise modifying the perfection requirements with
respect to Deposit Accounts (as defined in the Security Agreement) set forth in the Security Agreement, promptly upon delivering notice to the Collateral Trustee (or by filing materials with the Commission stating the Company’s intention and
contemporaneously delivering such materials to the Collateral Trustee and each Holder) stating its intention to invest or reinvest the Net Cash Proceeds from a Disposition, all of such Net Cash Proceeds to be invested or reinvested pursuant
Section 3.14(a)(i) shall be remitted to a Deposit Account that constitutes a Collateral Account until such amounts are so invested or reinvested. 

(b) Debt Issuances 

(i) Not later than five (5) Business Day following the receipt of any Net Cash Proceeds of any Debt Issuance by any Credit
Party, the Company shall make a written offer to each Holder (by delivering such offer to Collateral Trustee who shall at the expense of the Company (x) promptly deliver such offer to each Holder and (y) thereafter notify the Company when
the Collateral Trustee has delivered such notice to the Holders) to redeem the Obligations, if any are then outstanding, in accordance with Section 3.14(e) and Section 3.14(f) below, in an aggregate principal amount equal to 100% of such
Net Cash Proceeds and the Holders shall have thirty (30) days after it receives such written offer from the Company (or the Collateral Trustee, as applicable) to determine whether to accept its Pro Rata Share of such redemption offer (failure
by a Holder to respond within such thirty (30) day period shall be construed as acceptance of such redemption by such Holder). If a Holder accepts such redemption offer, subject to Section 3.14(e) hereof, the Credit Parties shall pay to
the Collateral Trustee, for the benefit of such Holders, such Holder’s Pro Rata Share of the aggregate redemption price offered to Holders within one (1) Business Day after the thirty (30) day period after such Holder receives the
offer from the Company or the Collateral Trustee, as applicable, and each such redemption shall be accompanied by a written notice to the Collateral Trustee specifying the provision pursuant to which the redemption is being made and the amount of
principal and interest being paid. 

  
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 (ii) Each written offer to redeem the Obligations delivered to Holders in
accordance with Section 3.14(b)(i) shall specify the section of this Indenture pursuant to which the redemption shall occur, the proposed redemption date, the Principal Amount of the Obligations to be redeemed and the amount of accrued interest
due in connection therewith. Each redemption of any or all of the Obligations shall be applied according to Section 3.14(e). Redemptions shall be accompanied by accrued and unpaid interest to, but not including, the redemption date. 

(iii) Any redemption offered and/or accepted under this Section 3.14(b) shall not be construed as a waiver or cure of any
Default or Event of Default arising as a result of the incurrence of any Debt Issuance. 
 (c) Casualty Events 

Not later than fifteen (15) Business Days following the receipt of any Net Cash Proceeds from a Casualty Event by any Credit Party (other
than with respect to a Casualty Event involving all or any portion of the Property located at 502 South Walnut Ave, Luverne, MN 56156), the Company shall make a written offer to each Holder (by delivering such offer to the Collateral Trustee who
shall at the expense of the Company (x) promptly deliver such offer to each Holder and (y) thereafter notify the Company when the Collateral Trustee has delivered such notice to the Holders) to apply an amount equal to 100% of such Net
Cash Proceeds to redeem the Obligations, if any are then outstanding, in accordance with Section 3.14(e) and Section 3.14(f) below, and each Holder shall have thirty (30) days after it receives such written offer from the Company (or
the Collateral Trustee, as applicable) to determine whether to accept its Pro Rata Share of such redemption offer (failure to respond within such thirty (30) day period shall be construed as acceptance of such redemption offer by such Holder);
provided that no such redemption (or offer to redeem Obligations) shall be required under this Section 3.14(c) with respect to any Disposition of Property which constitutes a Casualty Event resulting in no more than $250,000 in Net Cash
Proceeds per Casualty Event to the extent that the aggregate amount of Net Cash Proceeds from such Casualty Events does not exceed $500,000 in any fiscal year; provided, further: 

(i) other than with respect to a Casualty Event involving all or any portion of the Property located at 502 South Walnut Ave,
Luverne, MN 56156, so long as no Default or Event of Default shall then exist or arise therefrom, such proceeds shall not be required to be so offered on such date to the extent that the Company shall, following the receipt of such Net Cash
Proceeds, have delivered a certificate to the Collateral Trustee within fifteen (15) Business Days stating that such proceeds are expected to be applied to the costs of replacement or repair of the properties or assets that are the subject of
such Casualty Event or the cost of purchase or construction of other assets useful in the business of the Credit Parties or of the general type used in the business of the Credit Parties, including through Acquisitions permitted hereunder and, in
each case, otherwise in compliance with the terms of this Indenture no later than one (1) year after receipt of the Net Cash Proceeds from such Casualty Event provided that, if the Property subject to the Casualty Event constitutes Collateral
under any Security Document, then the replacement properties and assets and/or such other assets so purchased or constructed shall constitute Collateral subject to the Lien granted pursuant to the Security Documents 

  
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in favor of the Collateral Trustee, for the benefit of the other Secured Parties in accordance with Sections 4.17, 4.20, 4.21, and 4.41, including through Acquisitions permitted hereunder,
provided further that if any amount is so committed to be reinvested within such one-year period, but is not reinvested within the later to occur of (x) six (6) months of the date of such commitment and (y) the end of such one-year
period, the Company shall offer to redeem the Obligations in accordance with this Section 3.14(c)(i) in accordance with the procedures outlined above without giving further effect to such reinvestment right (to the extent that the Holders have
accepted the redemption offer); and 
 (ii) For the avoidance of doubt, the Company shall be excused from making an offer to
redeem the Obligations under Section 3.14(c)(i) to the extent that it has delivered written notice to the Collateral Trustee within fifteen (15) Business Days of receipt of Net Cash Proceeds from such Disposition stating its intention to
reinvest the Net Cash Proceeds as set forth in such Section 3.14(c)(i) (or by filing materials with the Commission stating the Company’s intention and contemporaneously delivering such materials to the Collateral Trustee) provided that
(i) the Company is otherwise entitled to invest or reinvest the Net Cash Proceeds pursuant to Section 3.14(c)(i) hereof and (ii) this sentence shall not be construed to limit the Company’s obligation to offer to prepay the
Obligations to the extent that the Company fails to invest the applicable Net Cash Proceeds within the time periods set forth in Section 3.14(c)(i). 

(iii) If all or any portion of the Property located at 502 South Walnut Ave, Luverne, MN 56156 is subject to a Casualty Event,
within fifteen (15) Business Days after the Net Cash Proceeds from such Casualty Event are received, the Company shall make a written offer to each Holder (by delivering such offer to the Collateral Trustee who shall at the expense of the
Company (x) promptly deliver such offer to each Holder and (y) thereafter notify the Company when the Collateral Trustee has delivered such notice to the Holders) to apply an amount equal to 100% of such Net Cash Proceeds to redeem the
Obligations, if any are then outstanding, in accordance with Section 3.14(e) and Section 3.14(f) below, and each Holder shall have thirty (30) days after it receives such written offer from the Company (or the Collateral Trustee, as
applicable) to determine whether to accept its Pro Rata Share of such redemption offer (failure to respond within such thirty (30) day period shall be construed as acceptance of such redemption offer by such Holder); provided that no
such provided that no such redemption (or offer to redeem Obligations) shall be required under this Section 3.14(c)(iii) with respect to such Casualty Events which do not exceed, in the aggregate, a fair market value of $5,000,000 through the
Maturity Date. Any of such Net Cash Proceeds that are not so applied to the Obligations in accordance with this Section 3.14(c)(iii) shall be invested, reinvested or applied to the costs of replacement of the properties or assets that are the
subject of such Casualty Event or the cost of purchase or construction of other assets useful in the business of the Credit Parties or of the general type used in the business of the Credit Parties provided that if the Property subject to the
Casualty Event constitutes Collateral under any Security Document, then all of such replacement properties or assets or other assets shall constitute Collateral subject to the Lien granted pursuant to the Security Documents in favor of the
Collateral Trustee, for the benefit of the Secured Parties in accordance with Sections 4.17, 4.20, 4.21, and 4.41. 

  
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 (iv) Each written offer to redeem the Obligations delivered to Holders in
accordance with Section 3.14(c) shall specify the section of this Indenture pursuant to which the redemption shall occur, the proposed redemption date, the Principal Amount of the Obligations to be redeemed and the amount of accrued interest
due in connection therewith. Each redemption of any or all of the Obligations shall be applied according to Section 3.14(e). Redemptions shall be accompanied by accrued and unpaid interest to, but not including, the redemption date. If any
Holder accepts such offer, subject to Section 3.14(e) hereof, the Credit Parties shall pay to the Collateral Trustee, for the benefit of such Holders, such Holder’s Pro Rata Share of the aggregate redemption price offered to Holders within
one (1) Business Day after the thirty (30) day period after such Holder receives the offer from the Company or the Collateral Trustee, as applicable, and each such redemption shall be accompanied by a written notice to the Collateral
Trustee specifying the provision pursuant to which the redemption is being made and the amount of principal and interest being paid. 

(v) Without limiting or otherwise modifying the perfection requirements with respect to Deposit Accounts (as defined in the
Security Agreement) set forth in the Security Agreement, promptly upon delivering notice to the Collateral Trustee (or by filing materials with the Commission stating the Company’s intention and contemporaneously delivering such materials to
the Collateral Trustee and each Holder) stating its intention to invest or reinvest the Net Cash Proceeds from a Casualty Event, all of such Net Cash Proceeds to be invested or reinvested pursuant Section 3.14(c) shall be remitted to a Deposit
Account that constitutes a Collateral Account until such amounts are so invested or reinvested. 
 (vi) All offers to redeem
the Obligations under this Section 3.14(c) shall be made on a pro rata basis based upon each Holder’s Pro Rata Share (with respect to Global Notes, such offers will be made pursuant to the Applicable Procedures that most nearly approximate
a pro rata selection). 
 (d) [Reserved] 

(e) Application of Redemption 

(i) Allocation of Redemption Amount; Declined Redemption Offers. Anything in this Indenture to the contrary
notwithstanding, at any time that there is any Indebtedness outstanding under the Loan Documents (and an offer to make a prepayment is required thereunder similar to the offer of redemption required under this Section 3.14), the amount required
to be offered to redeem the Obligations pursuant to this Section 3.14 shall be adjusted to be an amount equal to the result of (a) the aggregate amount otherwise required to offer to redeem the Obligations as of such date of determination
pursuant to the express terms of Section 3.14 (without giving effect to this Section 3.14(e) or the Intercreditor Agreement) multiplied by (b) the Convertible Notes Pro Rata Share as of such date of determination. In the event that
any Holder declines any written redemption offer provided pursuant to this Section 3.14, then the amount offered to such Holder for redemption shall be permitted to be retained by the Company to be used for any purpose not prohibited hereunder
and shall not be required to be applied to redeem all or any portion of the Obligations pursuant to this Section 3.14. 

  
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 (ii) Subject to Section 3.14(e)(i), amounts to be applied pursuant to this
Section 3.14(e) to the redemption of Obligations shall be applied to the outstanding Obligations, (A) first, towards payment of interest and fees then due hereunder in connection with such redemption (including any accrued PIK Interest in
regards to such redemption but not yet capitalized), and (B) second, towards payment of principal then due hereunder, with all such amounts distributed ratably among the parties entitled thereto in accordance with the amounts of principal,
interest and fees then due to such parties and subject to and in accordance with the terms of the Intercreditor Agreement and the Security Documents. 

(f) Notice of Redemption 

Each redemption of any or all of the Obligations shall be applied according to Section 3.14(e). Redemptions shall be accompanied by
accrued and unpaid interest to, but not including, the redemption date. 
 (g) Covenant to Comply with Securities Laws upon Redemption of
Notes 
 In connection with any redemption of Obligations pursuant to this Section 3.14, the Company shall: (i) comply with the
provisions of Rule 13e-4, Rule 14e-1 (or any successor provision) and any other tender offer rules under the Exchange Act that may then be applicable and (ii) otherwise comply with all federal and state securities laws. To the extent that the
provisions of any securities laws or regulations conflict with the provisions of this Section 3.14, the Company’s compliance with such laws and regulations shall not in and of itself cause a breach of its obligations under this
Section 3.14. 
 (h) Right to Convert Not Impaired 

For the avoidance of doubt, any written offer to redeem the Obligations delivered to Holders in accordance with this Section 3.14 shall
not impair the right of such Holders to convert the Notes pursuant to the terms of this Indenture prior to the redemption thereof. 

ARTICLE 4 
 COVENANTS

 AFFIRMATIVE COVENANTS 

So long as any of the Obligations remain outstanding, each Credit Party agrees, unless the Requisite Holders shall otherwise consent in
writing, to comply with the following covenants: 
 Section 4.01 Payment of Principal and Interest; Interest Reserve 

The Company covenants and agrees that it shall duly and punctually pay or cause to be paid the principal of and interest on each of the Notes
at the places, at the respective times and in the manner provided herein and in the Notes. If any Interest Payment Date, the Maturity Date, 

  
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any Fundamental Change Purchase Date or any other payment date herein is not a Business Day, payment will be made on the next succeeding Business Day, and no additional interest will accrue
thereon in respect of such delay. 
 The Company shall maintain in place at all times an interest reserve equal to ten percent (10%) of
the aggregate Principal Amount of the Notes on the date hereof provided that (i) the Company shall increase the interest reserve (or cause the interest reserve to be increased) by an amount equal to ten percent (10%) of the aggregate
principal amount of any Additional Notes issued promptly upon the issuance thereof and (ii) on each anniversary of the date hereof the amount of the interest reserve required to be maintained by the Company hereunder shall be adjusted such that
it is equal to ten percent (10%) of the aggregate unpaid principal amount of the Notes (including any capitalized and uncapitalized PIK Interest) outstanding on such anniversary date (the funds in such reserve, the “Reserve
Funds”). The Company shall remit to the Collateral Trustee any amount by which the reserve is required to be increased pursuant to such adjustment (and Collateral Trustee shall promptly deposit such amounts into the deposit account
referenced in the following sentence) or the Requisite Holders shall cause the Collateral Trustee to remit (or, in the event the Administrative Agent is the controlling agent under the applicable deposit account control agreement governing the
Deposit Account holding the Reserve Funds, the Requisite Holders shall cause the Collateral Trustee to direct the Administrative Agent to remit) any Reserve Funds to the Company in the amount by which the existing reserve exceeds such adjusted
interest reserve requirement, in each case, within three (3) Business Days after such anniversary date. The Reserve Funds shall be maintained in a segregated deposit account of the Company, which shall be subject at all times to a blocked
account agreement providing the Collateral Trustee or Administrative Agent (or any successor entity thereof, including, without limitation, the Collateral Trustee) (for the benefit of the Secured Parties and/or certain other secured parties) with
control (as described in 9-104 of the UCC) and sole dominion of such deposit account provided that after the second anniversary of the date hereof, if there are no Defaults or Events of Default then continuing, the Company shall be permitted to
direct the Collateral Trustee to make interest payments hereunder from Reserve Funds (without the necessity of refreshing such Reserve Funds). The Company shall not be permitted to withdraw or otherwise access the Reserve Funds until all Obligations
have been paid in full. Upon the occurrence and during the continuation of an Event of Default but not otherwise, the Collateral Trustee, acting at the direction of the Requisite Holders, shall be permitted to apply the Reserve Funds to the
outstanding Obligations. 
 Section 4.02 Maintenance of Office or Agency 

(a) The Company shall maintain an office or agency (which may be an office of the Trustee or an Affiliate of the Trustee, Registrar or
co-registrar) in the United States where the Notes may be surrendered for registration of transfer or exchange or for presentation for conversion, where notices and demands to or upon the Company in respect of the Notes and this Indenture may be
served and where the Notes may be surrendered or presented for payment. The Company shall give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency not designated or appointed by the Trustee.
If at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust
Office, and the Company hereby initially appoints the Trustee as its agent to receive all such presentations, surrenders, notices and demands. 

  
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 (b) The Company may also from time to time designate one or more offices or agencies where the
Notes may be presented or surrendered for any or all such purposes and may from time to time rescind such designations, provided that the Company shall at all times maintain an office or agency where the Notes may be surrendered or presented for
payment. The Company will give prompt written notice of any such designation or rescission and of any change in the location of any such other office or agency. 

(c) In accordance with Section 3.06, the Company hereby initially designates the Trustee as Registrar, Conversion Agent and Paying Agent
at its Corporate Trust Office, which, on the date of this Indenture, is located at 500 Delaware Ave., 11th Floor, Wilmington, DE 19801, Attention: Corporate Trust – Gevo 10.0% Convertible Senior Secured Notes. 

(d) So long as the Trustee is the Registrar, the Trustee agrees to mail, or cause to be mailed, the notices set forth in Section 11.11(a)
and the third paragraph of Section 11.12. If co-Registrars have been appointed in accordance with Section 3.06 and this Section, the Trustee shall mail such notices only to the Company and the Holders of Notes it can identify from its
records. 
 Section 4.03 Appointments to Fill Vacancies in Trustee’s Office 

A Trustee will be appointed in the manner provided in Section 11.11 whenever necessary to avoid or fill a vacancy in the office of
Trustee, so that there shall at all times be a Trustee hereunder. 
 Section 4.04 Provisions as to Paying Agent 

(a) In accordance with Section 3.06, the Company may designate additional Paying Agents, rescind the designation of any Paying Agent, or
approve a change in the office through which any Paying Agent acts. If the Company shall appoint a Paying Agent other than the Trustee, or if the Trustee shall appoint such a Paying Agent, the Company will cause such Paying Agent to execute and
deliver to the Trustee an instrument in which such agent shall agree with the Trustee, subject to the provisions of this Section 4.04: 

(i) that it will hold all sums held by it as such agent for the payment of the principal of or interest on the Notes (whether
such sums have been paid to it by the Company or by any other obligor on the Notes) in trust for the benefit of the Holders of the Notes or the Trustee; 

(ii) that it will give the Trustee notice of any failure by the Company (or by any other obligor on the Notes) to make any
payment of the principal of or interest on the Notes when the same shall be due and payable; and 
 (iii) that at any time
during the continuance of an Event of Default, upon request of the Trustee, it will forthwith pay to the Trustee all sums so held in trust. 

  
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 The Company shall, on or before each due date of the principal of or interest on the Notes,
deposit with the Paying Agent a sum (in funds which are immediately available on the due date for such payment) sufficient to pay such principal or interest, and (unless such Paying Agent is the Trustee) the Company will promptly notify the Trustee
of any failure to take such action; provided, however, that if such deposit is made on the due date, such deposit shall be received by the Paying Agent by 11:00 a.m. New York City time, on such date. 

(b) If the Company shall act as its own Paying Agent, it will, by 11:00 a.m. New York City time on each due date of the principal of or
interest on the Notes, set aside, segregate and hold in trust for the benefit of the Holders of the Notes a sum sufficient to pay such principal or interest so becoming due and will promptly notify the Trustee of any failure to take such action and
of any failure by the Company (or any other obligor under the Notes) to make any payment of the principal of or interest on the Notes when the same shall become due and payable. 

(c) Anything in this Section 4.04 to the contrary notwithstanding, the Company may, at any time, for the purpose of obtaining a
satisfaction and discharge of this Indenture, or for any other reason, pay or cause to be paid to the Trustee all sums held in trust by the Company or any Paying Agent hereunder as required by this Section 4.04, such sums to be held by the
Trustee upon the trusts herein contained and upon such payment by the Company or any Paying Agent to the Trustee, the Company or such Paying Agent shall be released from all further liability with respect to such sums. 

(d) Anything in this Section 4.04 to the contrary notwithstanding, the agreement to hold sums in trust as provided in this
Section 4.04 is subject to Sections 13.03 and 13.04. 
 (e) The Trustee shall not be responsible for the actions of any other Paying
Agents (including the Company if acting as its own Paying Agent) and shall have no control of any funds held by such other Paying Agents. 

Section 4.05 Maintenance of Insurance 

(a) Each Credit Party shall keep its insurable Property adequately insured at all times by financially sound and reputable insurers; maintain
such other insurance, to such extent and against such risks as is customary with companies in the same or similar businesses operating in the same or similar locations, including insurance with respect to any Property subject to a Mortgage
(including any insurance required under the Mortgage) and other properties material to the business of the Credit Parties against such casualties and contingencies and of such types and in such amounts with such deductibles as is customary in the
case of similar businesses operating in the same or similar locations, including (i) physical hazard insurance on an “all risk” basis, (ii) commercial general liability against claims for bodily injury, death or property damage
covering any and all insurable claims, (iii) explosion insurance in respect of any boilers, machinery or similar apparatus constituting Collateral, (iv) Reserved, and (v) worker’s compensation insurance and such other insurance
as may be required by any Legal Requirement; provided that if and so long as an Event of Default has occurred and is continuing with respect to physical hazard insurance, neither the Requisite Holders nor the applicable Credit Party shall agree to
the adjustment of any claim thereunder in excess of $1,000,000 without the consent of the other (such consent not to be unreasonably withheld or delayed). 

  
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 (b) The Credit Parties shall use commercially reasonable efforts to arrange for all of such
insurance (and the corresponding insurance certificates) to provide that no cancellation, material reduction in amount or material change in coverage thereof shall be effective until at least thirty (30) days after receipt by the Collateral
Trustee of written notice thereof (except with respect to cancellation as a result of a payment default, such cancellation shall not be effective until at least ten (10) days after receipt by the Collateral Trustee of written notice thereof)
and if an endorsement providing such notice is commercially impracticable by any Credit Party’s carrier (or such carrier(s) otherwise refuse to deliver such notice), such Credit Party will use its commercially reasonable efforts to provide
thirty (30) days or ten (10) days, as applicable, notice to the Collateral Trustee prior to the cancellation, material reduction in amount or material change in coverage. All such insurance (and the corresponding insurance certificates)
shall (i) name the Collateral Trustee as mortgagee (in the case of property insurance) or additional insured on behalf of the Secured Parties (in the case of liability insurance) or loss payee (in the case of property insurance), as applicable
and (ii) be reasonably satisfactory in all other respects to the Requisite Holders (it being agreed that the amount, adequacy and scope of the policies of insurance of the Credit Parties in effect as of the Term Loan Closing Date are acceptable
to the Requisite Holders as of the Closing Date). 
 (c) If such Credit Party fails to obtain any insurance as required by this Section, the
Collateral Trustee may obtain such insurance, acting at the direction of the Requisite Holders, at such Credit Party’s expense. By purchasing such insurance, neither the Collateral Trustee nor the Requisite Holders shall be deemed to have
waived any Default or Event of Default arising from the Credit Party’s failure to maintain such insurance or pay any premiums therefor. 

(d) With respect to Property subject to a Mortgage, each Credit Party shall obtain flood insurance in such total amount as the Requisite
Holders or the Collateral Trustee (at the direction of the Requisite Holders) may from time to time reasonably require, if at any time the area in which any improvements located on any Property subject to a Mortgage is designated a “flood
hazard area” in any Flood Insurance Rate Map published by the Federal Emergency Management Agency (or any successor agency), and otherwise comply with the National Flood Insurance Program as set forth in the Flood Disaster Protection Act of
1973, as amended from time to time. 
 (e) Promptly following the reasonable request of the Requisite Holders or the Collateral Trustee
acting at the direction of the Requisite Holders, each Credit Party shall deliver to the Collateral Trustee and the Holders a report of a reputable insurance broker with respect to such Credit Party’s insurance and such supplemental reports
with respect thereto as the Requisite Holders or the Collateral Trustee acting at the direction of the Requisite Holders, may from time to time reasonably request. 

(f) No Credit Party shall knowingly take any action that is reasonably likely to be the basis for termination, revocation or denial of any
insurance coverage required to be maintained under any Mortgage of any Credit Party or that could be the basis for a defense to any claim under any Insurance Policy maintained in respect of the Property subject to a Mortgage, and each

  
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Credit Party shall otherwise comply in all material respects with all Insurance Requirements in respect of the premises; provided, however, that the foregoing to the contrary
notwithstanding, such Credit Party may, at its own expense and so long as it provides prompt written notice thereof to the Collateral Trustee, (i) contest the applicability or enforceability of any such Insurance Requirements by appropriate
legal proceedings, the prosecution of which does not constitute a basis for cancellation or revocation of any insurance coverage required under this Section 4.05 or (ii) cause the Insurance Policy or any other insurance policy containing
any such Insurance Requirement to be replaced by a new policy complying with the provisions of this Section 4.05 (and terminate the policy that is so replaced). 

Section 4.06 Preservation of Corporate Existence, Etc. 

(a) Each Credit Party shall preserve and maintain its corporate existence, rights, franchises, and privileges in the jurisdiction of its
formation and qualify and remain qualified as a foreign corporation in each jurisdiction in which qualification is necessary or desirable in view of its business and operations or the ownership of its Properties, except, in each case, where failure
to so qualify or preserve and maintain its rights and franchises could not reasonably be expected to cause a Material Adverse Change. 
 (b)
Without limiting the restrictions or otherwise modifying the provision set forth in Section 4.25 hereof, each Credit Party shall (i) do or cause to be done all things reasonably necessary to obtain, preserve, renew, extend and keep in full
force and effect the Intellectual Property rights, licenses, permits, privileges, franchises, authorizations, patents, copyrights, trademarks, trade names and other Intellectual Property necessary to the conduct of its business in each case,
ordinary wear, tear, casualty, and condemnation and Permitted Dispositions excepted and except where the failure to so obtain, keep maintain, renew, extend and/or preserve such permits, privileges, franchises or Property would not reasonably be
expected to result in a Material Adverse Change; and (ii) comply with all applicable Legal Requirements (including any and all zoning, building, Environmental Law, ordinance, code or approval or any building permits or any restrictions of
record or agreements affecting the Real Property) and decrees and orders of any Governmental Authority, whether now in effect or hereafter enacted, except in each cases where the failure to comply, individually or in the aggregate, could not
reasonably be expected to result in a Material Adverse Change; provided that nothing in this Section 4.06(b) shall prevent (A) Dispositions of Property in accordance with Section 4.32; or (B) the withdrawal by any Credit Party of
its qualification as a foreign corporation in any jurisdiction where such withdrawal, individually or in the aggregate, could not reasonably be expected to result in a Material Adverse Change. 

(c) Except as expressly permitted herein or in any other Equity Document or Indenture Document, each Credit Party shall (a) perform and
observe all material terms and provisions of each contract, instrument, agreement or other document (after giving effect to all cure periods set forth therein), in each case, to the extent such contract, instrument, agreement or other document
relates to Property, revenues or obligations of such Credit Party with value in excess of $1,000,000, to be performed or observed by it, (b) maintain each such contract, instrument, agreement or other document in full force and effect,
and (c) enforce each such contract, instrument, agreement or other document in accordance with its terms provided, however, without limiting the other provisions set forth herein, (x) that no Credit Party shall be

  
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required to pay or perform any obligations (or enforce, observe and perform the terms of, or maintain in full force and effect, any agreement relating thereto) which are being contested in good
faith, with respect to which reserves in conformity with GAAP have been provided and (y) no Credit Party shall be obligated to perform, observe, maintain, or enforce any such contract, instrument, agreement or other document if the failure to
do so would not reasonably be expected to result in a Material Adverse Change. 
 Section 4.07 Payment of Taxes, Etc. 

(a) Each Credit Party shall pay and discharge before the same shall become delinquent, (i) all taxes, assessments, and governmental
charges or levies imposed upon it or upon its income or profits or Property that are material in amount, prior to the date on which penalties attach thereto and (ii) all lawful claims that are material in amount which, if unpaid, might by law
become a Lien (other than Permitted Liens) upon its Property; provided, however, that no Credit Party shall be required to pay or discharge any such tax, assessment, charge, levy, or claim which is being contested in good faith and by appropriate
proceedings, and with respect to which reserves in conformity with GAAP have been provided. 
 (b) Each Credit Party shall timely and
correctly file all Tax returns required to be filed by it, except where the failure to do so would not reasonably be expected to result in a Material Adverse Change. 

(c) The Company does not intend to treat the Notes as being a “reportable transaction” within the meaning of Treasury Regulation
Section 1.6011-4. In the event the Company determines that the Notes are required to be so treated, it will promptly notify the Trustee thereof if, by such date, the Trustee has requested to be so notified upon receiving a Deliverables Notice
from the Requisite Holders. The Trustee shall notify the Holders promptly upon being so notified after receiving such Deliverables Notice. 

Section 4.08 [Reserved] 

Section 4.09 Resale of Certain Notes 

The Company shall not, and shall not permit any of its Subsidiaries to, resell any Notes that have been reacquired by the Company or any such
Subsidiary. The Trustee shall have no responsibility in respect of the Company’s performance of its agreement in the preceding sentence. 

Section 4.10 Maintenance of Records; Visitation Rights 

Each Credit Party shall keep proper books of record and account (i) in which full, true and correct entries are made in conformity with
all Legal Requirements and (ii) in form permitting financial statements conforming with GAAP to be derived therefrom. The Company or any Credit Party will permit any representatives (which may include a Holder) designated by the Requisite
Holders or the Collateral Trustee (acting at the direction of the Requisite Holders) to visit and inspect the financial records and, subject to the rights of tenants, the property of the Company, any Credit Party or any of their Subsidiaries upon
reasonable prior notice during regular business hours and to make extracts from and copies of such financial records, and 

  
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permit any representatives (which may include a Holder) designated by the Requisite Holders or the Collateral Trustee (acting at the direction of the Requisite Holders) to discuss the affairs,
finances, accounts and condition of the Company, any Credit Party or any of their Subsidiaries with and be advised as to the same by the officers and employees thereof and the independent accountants therefor, all at such reasonable times and
intervals and to such reasonable extent as the Requisite Holders or the Collateral Trustee may request (acting at the direction of the Requisite Holders); provided, that unless a Default or an Event of Default is continuing, the Credit Parties shall
not be required to pay the expenses of more than one such visit per calendar year. Any Holder may accompany the Collateral Trustee (or its designee) on any such visits at its own expense (unless the Holder is the Collateral Trustee’s or
Requisite Holders’ designee or representative, in which case, the Company shall pay the Holder’s expenses in accordance with Section 4.10 above). 

Section 4.11 Reporting Requirements 

The Company shall furnish to the Trustee: 
 (a)
Public Reports. Notwithstanding that the Company may not be subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act, the Company will file with the Commission (or any Governmental Authority succeeding to any or
all of the functions of said Commission) and provide the Trustee with such annual and quarterly reports and such information, documents and other reports as are specified in Sections 13 and 15(d) of the Exchange Act and applicable to a U.S.
corporation subject to such Sections, such information, documents and reports to be so filed and provided at the times specified for the filing of such information, documents and reports under such Sections; provided, however, that
(i) the Company will not be required to provide the Trustee with any such information, documents and reports that are filed with the Commission and (ii) the Company will not be so obligated to file such information, documents and reports
with the Commission if the Commission does not permit such filings; provided further, however, that if the Commission does not permit such filings, the Company will be required to provide to the Trustee any such information, documents or reports
that are not so filed at the times specified for such filings under such Sections. The Trustee shall have no responsibility to determine if any such filing has occurred. Delivery (which may be electronic) of the reports, information and documents in
accordance with this paragraph shall satisfy the Company’s obligation to make such delivery, but, in the case of the Trustee, such delivery shall be for informational purposes only, and the Trustee’s receipt of such reports, information
and documents shall not constitute constructive notice of any information contained therein or determinable from information contained therein, including the Company’s compliance with any of its covenants (as to which the Trustee is entitled to
conclusively rely on an Officers’ Certificate). 
 (b) 144A Information. For so long as any of the Notes or shares of Common
Stock delivered upon conversion of the Notes will, at such time, constitute “restricted securities” under Rule 144 of the Securities Act, the Company will promptly provide to the Trustee and will, upon written request, provide to any
Holder or beneficial owner of such Notes or such shares of Common Stock and any prospective purchaser of such Notes or such shares of Common Stock, the information required pursuant to Rule 144A(d)(4) under the Securities Act to facilitate the
resale of such Notes or such shares of Common Stock pursuant to Rule 144A under the 

  
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Securities Act, and it will take such further action as any Holder or beneficial owner of such Notes or such shares of Common Stock may reasonably request from time to time to enable such Holder
or beneficial owner to sell such Notes or such shares of Common Stock in accordance with Rule 144A, as such rule may be amended from time to time. 

(c) Defaults. As soon as possible and in any event within three (3) Business Days after the date on which any Responsible Officer
of any Credit Party obtains knowledge of the occurrence of any Event of Default or Default which is continuing on the date of such statement, a statement of a Responsible Officer of such Credit Party setting forth the details of such Default, Event
of Default, as applicable, and the actions which the Company and the applicable Credit Party has taken and proposes to take with respect thereto. Any notice required to be given under this Section 4.11(c) shall be delivered to a Trust Officer
of the Trustee at its Corporate Trust Office. The Trustee shall promptly send any such notice that it receives from the Company to each Holder. 

(d) Termination Events. If requested by the Trustee upon receiving a Deliverables Notice from the Requisite Holders, as soon as
possible and in any event (i) within thirty (30) days after the Company or any member of the Controlled Group knows or has reason to know that any Termination Event described in clause (a) of the definition of Termination Event with
respect to any Plan has occurred, and (ii) within ten (10) days after the Company or any of its Affiliates knows or has reason to know that any other Termination Event with respect to any Plan has occurred, a statement of a Responsible
Officer of the Company or such member describing such Termination Event and the action, if any, which the Company or such Affiliate proposes to take with respect thereto. The Trustee shall promptly send to each Holder a copy of any such statement
that it receives from the Company after Trustee receives such Deliverables Notice. 
 (e) Termination of Plans. If requested by the
Trustee upon receiving a Deliverables Notice from the Requisite Holders, promptly and in any event within ten (10) days after receipt thereof by the Company or any member of the Controlled Group from the PBGC, copies of each notice received by
the Company or any such member of the Controlled Group of the PBGC’s intention to terminate any Plan or to have a trustee appointed to administer any Plan. The Trustee shall promptly send to each Holder a copy of any such notice that it
receives from the Company after Trustee receives such Deliverables Notice. 
 (f) Other ERISA Notices. If requested by the Trustee
upon receiving a Deliverables Notice from the Requisite Holders, promptly and in any event within thirty (30) Business Days after receipt thereof by the Company or any member of the Controlled Group from a Multiemployer Plan, a copy of each
notice received by the Company or any member of the Controlled Group concerning the imposition of withdrawal liability (either partial or complete) in an amount exceeding $1,000,000 pursuant to Section 4202 of ERISA. The Trustee shall promptly
send to each Holder a copy of any such notice that it receives from the Company after Trustee receives such Deliverables Notice. 
 (g)
Environmental Notices. If requested by the Trustee upon receiving a Deliverables Notice from the Requisite Holders, promptly and in any event within ten (10) Business Days after receipt thereof by any Credit Party, a copy of any form of
request, notice, summons, 

  
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demand or citation received from the United States Environmental Protection Agency, any other Governmental Authority or third party, concerning (i) violations or alleged violations of
Environmental Laws, which seeks to impose liability therefor and could cause a Material Adverse Change, (ii) any action or omission on the part of any Credit Party or any of its current or former Subsidiaries, in connection with Hazardous
Substances which could reasonably result in the imposition of liability therefor that could cause a Material Adverse Change, including without limitation any information request related to, or notice of, potential responsibility under CERCLA, or
(iii) the filing of a Lien upon, against or in connection with any Credit Party or its current or former Subsidiaries, or any of their leased or owned Property, wherever located. The Trustee shall promptly send to each Holder a copy of any such
notice, request, summons, demand or citation that it receives from the Company after Trustee receives such Deliverables Notice. 
 (h)
Other Governmental Notices. If requested by the Trustee upon receiving a Deliverables Notice from the Requisite Holders, promptly and in any event within five (5) Business Days after receipt thereof by any Credit Party, a copy of any
notice, summons, citation, or proceeding seeking to modify in any material respect, revoke, or suspend any material contract, license, permit or agreement with any Governmental Authority, which modification, revocation or suspension would reasonably
be expected to result in a Material Adverse Change. The Trustee shall promptly send to each Holder a copy of any such notice, summons, citation, or proceeding that it receives from the Company after Trustee receives such Deliverables Notice. 

(i) Material Changes. If requested by the Trustee upon receiving a Deliverables Notice from the Requisite Holders, prompt written
notice of any condition or event of which any Credit Party has knowledge, which condition or event (i) has resulted or could reasonably be expected to result in a Material Adverse Change or (ii) has resulted in a breach of or noncompliance
with any term, condition, or covenant of any contract which breach or noncompliance would reasonably be expected to result in a Material Adverse Change. The Trustee shall promptly send to each Holder a copy of any such notice that it receives from
the Company after Trustee receives such Deliverables Notice. 
 (j) Disputes, Etc. If requested by the Trustee upon receiving a
Deliverables Notice from the Requisite Holders, prompt written notice of (i) any claims, legal or arbitration proceedings, suits, actions, audits, investigations or proceedings before any Governmental Authority, or disputes pending, or to the
knowledge of any Credit Party threatened, or affecting any Credit Party, or any of its Subsidiaries which could reasonably be expected to cause a Material Adverse Change, or any material labor controversy of which any Credit Party has knowledge
resulting in or reasonably considered to be likely to result in a strike against any Credit Party that could reasonably be expected to cause a Material Adverse Change and (ii) with the exception of any claim listed on Schedule 4.11 to the
Indenture, any judgment or Lien (other than a Permitted Lien) affecting any Property of any Credit Party if the value of the judgment or Lien affecting such Property shall exceed $1,500,000. The Trustee shall promptly send to each Holder a copy of
any such notice that it receives from the Company after Trustee receives such Deliverables Notice. 
 (k) Other Accounting Reports.
If requested by the Trustee upon receiving a Deliverables Notes from the Requisite Holders, (i) promptly following such request after receipt 

  
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of such materials by any Credit Party, a copy of each other report or letter submitted to any Credit Party by its independent accountants in connection with any annual, interim or special audit
made by them of the books of any Credit Party, and (ii) promptly after providing such response, a copy of any response by any Credit Party, or the Board of Directors (or other applicable governing body) of such Credit Party, to such letter or
report. The Trustee shall promptly send to each Holder a copy of any such notice that it receives from the Company after Trustee receives such Deliverables Notice. 

(l) Notices Under Other Loan Agreements. If requested by the Trustee upon receiving a Deliverables Notice from the Requisite Holders,
promptly after the furnishing thereof, copies of any material statement, report or notice (i) furnished to any Credit Party pursuant to the terms of the Credit Agreement, any other indenture, loan or credit or other similar agreement involving
Indebtedness in a principal amount in excess of $1,000,000 other than this Indenture and not otherwise required to be furnished to Holders pursuant to any other provision of this Section 4.11 or (ii) distributed to holders of Credit
Parties’ Indebtedness in a principal amount in excess of $1,000,000 or Equity Interests by any Credit Party pursuant to the terms of the documentation governing such Indebtedness or Equity Interests (or any trustee, agent or other
representative therefor), as the case may be. The Trustee shall promptly send to each Holder a copy of any such notice that it receives from the Company after Trustee receives such Deliverables Notice. 

(m) USA PATRIOT Act. Promptly, following a request by any Holder or Trustee, all documentation and other information that such Holder
reasonably requests in order to comply with its ongoing obligations under applicable “know your customer” and anti-money laundering rules and regulations, including the PATRIOT Act. 

(n) Perfection Certificate/Officer’s Certificate. Concurrently with (i) the delivery of annual reports pursuant to
Section 4.11(a), each Credit Party shall deliver to the Collateral Trustee a duly executed Perfection Certificate, effective as of December 31 of the immediately preceding year, which shall update the Perfection Certificate delivered on
the Closing Date or confirm that there have been no changes to the information set forth in the Perfection Certificate previously delivered to the Collateral Trustee and (ii) the delivery of the annual and quarterly reports pursuant to Sections
4.11(a) hereof, the Company shall deliver to the Collateral Trustee an Officers’ Certificate, which shall include, without limitation, (a) a list of names of all Unrestricted Subsidiaries (if any), (b) a list of all of the Foreign
Subsidiaries (to the extent that at least one of which is a direct Subsidiary of a Credit Party) organized within a single foreign jurisdiction from which at least ten percent (10%) of the consolidated revenues of the Company and all of its
Subsidiaries (for the period of four consecutive fiscal quarters ending as of the end of the period to which such financial statements relate) are derived, (c) to the extent that at least thirty five percent (35%) of the consolidated
revenues of the Company and all of its Subsidiaries (for the period of four consecutive fiscal quarters ending as of the end of the period to which such financial statements relate) are derived from sales in foreign jurisdictions, a list of each
such foreign jurisdiction, with the revenues derived from each jurisdiction (listed by amount and as a percentage of the revenue of the Company and each of its Subsidiaries), and the Foreign Subsidiaries organized under the laws of each of such
jurisdictions (and specifying whether such Foreign Subsidiary is a direct Subsidiary of a Credit Party, (d) a list of each foreign jurisdiction from which at least ten percent (10%) of the revenues of the Credit Parties (for the period of
four 

  
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consecutive fiscal quarters ending as of the end of the period to which such financial statements relate) are derived to the extent that any of the Credit Party’s Intellectual Property is
registered in such jurisdiction, (e) to the extent that at least thirty five percent (35%) of the revenues of Credit Parties (for the period of four consecutive fiscal quarters ending as of the end of the period to which such financial
statements relate) are derived from sales in foreign jurisdictions in which any Credit Party has registered its Intellectual Property, a list of each such foreign jurisdiction, with the revenues derived from each jurisdiction (listed by amount and
as a percentage of the revenue of all of the Credit Parties (without giving effect to any revenue of the Credit Parties’ Subsidiaries that are not Credit Parties), and the patents, trademarks or copyrights registered in each such jurisdiction
(and such other information regarding such Intellectual Property upon the request of the Collateral Trustee to the extent so directed by the Requisite Holders) and (f) a list of all of the Patents and Trademarks of such Credit Party relating
thereto or represented thereby (in each case, to the extent not constituting Excluded Property), for which an application has been filed during the fiscal quarter of the Company just ended (and against which recordings are required to be made at the
United States Patent and Trademark Office pursuant to [Section 4.7(f) of the Security Agreement.]1; 

(o) Compliance Certificate. The Company shall deliver to the Trustee, within one hundred twenty (120) days after the end of each
fiscal year of the Company (commencing with the fiscal year ending December 31, 2015), an Officers’ Certificate, stating whether or not to the knowledge of the signer thereof the Company is in Default and, if the Company shall be in
Default, specifying all such Defaults and the nature and the status thereof of which the signer may have knowledge. Any notice required to be given under this Section 4.11(o) shall be delivered to a Trust Officer of the Trustee at its Corporate
Trust Office. 
 (p) Change in Location of Books and Records. If requested by the Trustee upon receiving a Deliverables Notice from
the Requisite Holders, each Credit Party agrees to promptly notify the Collateral Trustee of any change in the location of any office in which it maintains books or records relating to Collateral owned by it or any office or facility at which
Collateral is located (including the establishment of any such new office or facility), other than (i) changes in location to a location of Property subject to a Mortgage or a leased property (or other Collateral location), (ii) changes in
location with respect to Property that is in transit via rail, truck, barge, ship, pipeline, or other means between one or more locations of a Credit Party, a processor, or a customer in the ordinary course of business, (iii) changes in
location with respect to Property that is being transported to or from, or is in the possession of or under the control of, a bailee, warehouseman, bulk storage or tank farm operator, terminal operator, blending facility operator, or repair Person,
in the ordinary course of business, (iv) Property that is located at a tolling facility to be further processed by unit operations including but not limited to purification, denaturing, blending, or further converted to value added products
including but not limited to JP8, JP5, para xylene, and isooctane, (v) Property at any location where Collateral with a value of $1,000,000 or less is located (provided that the value of all of the Property at such locations described in this
clause (v) does not exceed $2,500,000 in the aggregate at any time), (vi) changes resulting from Property being in the possession of the Collateral Trustee), or (vii)

 

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[changes to any location identified on Schedule 4 to the Security Agreement]2, in each case if such new location is not listed on the
schedules to any of the Security Documents or any Perfection Certificate or the most recent supplements or updates thereto. Promptly upon receiving such notification from Company after Trustee receives such Deliverables Notice, Collateral Trustee
shall so notify each Holder. 
 (q) Other Information. Such other information respecting the business or Properties, or the condition
or operations, financial or otherwise, of any Credit Party, or any of its Subsidiaries, as Trustee, Collateral Trustee or any Holder may from time to time reasonably request. 

(r) 314(a) of the Trust Indenture Act. The information required pursuant to Section 314(a) of the Trust Indenture Act. 

Section 4.12 Additional Interest 

If at any time Additional Interest becomes payable by the Company pursuant to Section 9.03, the Company shall promptly deliver to the
Trustee a certificate to that effect and stating (i) the amount of such Additional Interest that is payable and (ii) the date on which such Additional Interest is payable. Any Person entitled to such Additional Interest may, but shall not
be obligated to, deliver a certificate to such effect to the Trustee. Unless and until a Trust Officer of the Trustee receives such a certificate, the Trustee may assume without inquiry that no Additional Interest is payable. If the Company has paid
Additional Interest directly to the Persons entitled to such Additional Interest, the Company shall deliver to the Trustee a certificate setting forth the particulars of such payment. The Trustee shall not at any time be under any duty or
responsibility to any Holder of Notes to determine the Additional Interest, or with respect to the nature, extent, or calculation of the amount of Additional Interest owed, or with respect to the method employed in such calculation of the Additional
Interest. 
 Section 4.13 Stay; Extension and Usury Laws 

Each of the Company and the Guarantors covenants (to the extent that it may lawfully do so) that it shall not at any time insist upon, plead,
or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law or other law which would prohibit or forgive the Company or the Guarantors from paying all or any portion of the principal of or interest on the
Notes as contemplated herein, wherever enacted, now or at any time hereafter in force, or which may affect the covenants or the performance of this Indenture and each of the Company and the Guarantors (to the extent it may lawfully do so) hereby
expressly waives all benefit or advantage of any such law, and covenants that it will not, by resort to any such law, hinder, delay or impede the execution of any power herein granted to the Trustee, but will suffer and permit the execution of every
such power as though no such law had been enacted. 
 Section 4.14 [Reserved] 

Section 4.15 [Reserved] 

 

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 Section 4.16 Maintenance of Property 

Each Credit Party shall maintain, preserve and protect all material Property (other than Intellectual Property) reasonably necessary in the
operation of or used or useful in the business of the Credit Parties in good condition and repair, ordinary wear and tear and condemnation and Permitted Dispositions excepted and maintain its operated Property (other than Intellectual Property), as
a reasonably prudent operator would, in good condition and repair, ordinary wear and tear and condemnation and Permitted Dispositions excepted (including, without limitation, as commercially practicable making or causing to made all repairs,
replacements and other improvements which are necessary or appropriate in the conduct of any Credit Party’s business); provided that no item of Property needs to be repaired, renewed, replaced, or improved and no leased Property needs to be
maintained, if such Credit Party shall in good faith determine that such action is not necessary or desirable in its business judgment for the continued efficient and profitable operation of the business of the Credit Parties; and, provided further
each Credit Party shall abstain from knowingly or willfully permitting the Release of any Hazardous Substance in, on or about the owned, leased or operated Property except in compliance with Environmental Law, the Release of which could reasonably
be expected to result in Response activities and that could reasonably be expected to cause a Material Adverse Change. 
 Section 4.17
Agreement to Pledge 
 As and when required under the Security Agreement (and subject to the terms hereof and thereof (including any
exceptions, limitations and time periods provided therein), each Credit Party shall, grant to Collateral Trustee, for the benefit of the Secured Parties, an Acceptable Security Interest in any Property of such Credit Party (other than Excluded
Property) now owned or hereafter acquired, including without limitation, (i) each Credit Party shall execute and deliver to the Collateral Trustee or Administrative Agent (or any successor entity thereof, including, without limitation, the
Collateral Trustee) for the benefit of the Secured Lender Parties and/or the Secured Parties hereunder and/or certain other secured parties, deposit account control agreements for each of their Deposit Accounts (other than Excluded Deposit/Security
Accounts as defined in the Security Agreement) in accordance with [Section 5.1 of the Security Agreement]3 and (ii) the Company shall deliver to the Collateral Trustee or Administrative Agent
(or any successor entity thereof, including, without limitation, the Collateral Trustee) for the benefit of the Secured Lender Parties and/or the Secured Parties hereunder and/or certain other secured parties, certificates representing all of the
Equity Interests owned by the Company or any other Credit Party (other than Excluded Property), together with undated stock powers or other appropriate instruments of transfer executed and delivered in blank by a duly authorized officer of the
Company or another Credit Party, as applicable. The Company shall deliver to the Collateral Trustee insurance certificates naming Collateral Trustee as additional insured, or loss payee, as applicable, and evidencing insurance which meets the
requirements of this Indenture and the Security Documents. 
  

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 Section 4.18 Use of Proceeds 

Each Credit Party shall use the proceeds of the Notes (i) to pay the fees, costs, and expenses incurred in connection with this Indenture,
the other Equity Documents and the transactions contemplated hereby and thereby, (ii) to repay and/or refinance the outstanding obligations under the Loan Documents in connection with Exchanges (as defined in the Credit Agreement) to be
consummated in accordance with the Credit Agreement and Purchase Agreement and (iii) for working capital purposes and for all other general corporate purposes. 

Section 4.19 Title Evidence and Opinions 

Each Credit Party shall from time to time upon the reasonable request of the Requisite Holders or the Collateral Trustee (acting at the
direction of the Requisite Holders), take such actions and execute and deliver such documents and instruments as the Collateral Trustee or the Requisite Holders shall require to ensure that the Collateral Trustee shall, at all times, have received
satisfactory title evidence in regards to the Real Property subject to a Mortgage, which title evidence shall be in form and substance acceptable to the Requisite Holders in their sole discretion. 

Section 4.20 Further Assurances; Cure of Title Defects 

Each Credit Party shall, cure promptly any defects in the creation and issuance of the Notes and the execution and delivery of the Security
Documents and this Indenture. Each Credit Party hereby authorizes Collateral Trustee, acting at the direction of the Requisite Holders, to file any financing statements without the signature of such Credit Party to the extent permitted by applicable
law in order to perfect or maintain the perfection of any security interest granted under any of the Security Documents and the Indenture Documents. Notwithstanding the foregoing but subject to the Security Agreement (and subject to the terms hereof
and thereof (including any exceptions, limitations and time periods provided therein), as soon as reasonably practicable, upon the reasonable request of the Collateral Trustee (at the direction of the Requisite Holders) or the Requisite Holders,
each Credit Party at its expense will, (a) promptly execute, acknowledge and deliver or cause the execution, acknowledgement and delivery of, and thereafter register, file or record, or cause to be registered, filed or recorded, in an
appropriate governmental office and document, agreement and/or instrument to comply with or accomplish the covenants and agreements of each Credit Party, in the Security Documents and this Indenture, or to further evidence and more fully describe
the Property intended to constitute Collateral to secure the Obligations, or (b) take any necessary action to correct any omissions in the Security Documents, or to state more fully the security obligations set out herein or in any of the
Security Documents, or to perfect, protect or preserve any Liens created pursuant to any of the Security Documents, or to make any recordings, to file any notices or obtain any consents, all as may be necessary or appropriate in connection therewith
or to enable the Collateral Trustee to exercise and enforce its rights and remedies with respect to any Collateral. Within thirty (30) days (or, in each case, such later date as the Requisite Holders or Collateral Trustee may agree in its sole
discretion (at the direction of the Requisite Holders)) after (a) a request by the Requisite Holders or the Collateral Trustee (acting at the direction of the Requisite Holders) to cure any title defects or exceptions which are not Permitted
Liens raised by such information or (b) a notice by the Requisite Holders or the Collateral Trustee (sent at the direction of the Requisite Holders) that any Credit Party has failed to comply with Section 4.19, such Credit Party shall
(i) cure such title defects or exceptions which are not Permitted Liens and (ii) deliver to the 

  
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Collateral Trustee and the Holders title evidence (including supplemental or new title opinions meeting the foregoing requirements) in form and substance reasonably acceptable to the Requisite
Holders as to such Credit Party’s ownership of such Properties and the Collateral Trustee’s Liens and security interests therein as are required to maintain compliance with Section 4.19. 

Section 4.21 Additional Collateral; Additional Guarantors 

(a) Subject to this Section 4.21 and the provisions of the Security Agreement (and subject to the terms hereof and thereof (including any
exceptions, limitations and time periods provided therein)), with respect to any Property (excluding Real Property and Excluded Property) acquired after the Closing Date, by any Credit Party that constitutes Collateral or is otherwise intended to be
subject to the Lien created by any of the Security Documents (other than Excluded Property) but is not so subject or with respect to any Property previously designated as Excluded Property (but is no longer designated as Excluded Property), each
Credit Party shall (i) execute and deliver to the Collateral Trustee such amendments or supplements to the relevant Security Documents or such other documents as are necessary to grant to the Collateral Trustee, for the benefit of the Secured
Parties, Acceptable Security Interest on such Property, and (ii) to the extent not already created and/or perfected, take all actions necessary to cause such Property to be subject to an Acceptable Security Interest and not already perfected in
accordance with all applicable Legal Requirements, including the filing of financing statements in all necessary filing offices, in each case, in accordance with the time frames required under the Security Agreement. 

(b) [Reserved] 
 (c) Each Credit
Party (i) shall grant to the Collateral Trustee, within sixty (60) days (or such longer period approved by the Requisite Holders in their reasonable discretion or the Collateral Trustee (acting at the direction of the Requisite Holders in
their reasonable discretion)) of the acquisition thereof, an Acceptable Security Interest in and Mortgage encumbering each Real Property valued at least $1,000,000 owned in fee by such Credit Party as is acquired by such Credit Party after the
Closing Date, and (ii) at the Collateral Trustee’s direction (at the direction and reasonable discretion of the Requisite Holders), shall use commercially reasonable efforts to grant to the Collateral Trustee, within sixty (60) days
(or such longer period approved by the Requisite Holders in their reasonable discretion or the Collateral Trustee (acting at the direction of the Requisite Holders in their reasonable discretion)) of the acquisition thereof, an Acceptable Security
Interest in and Mortgage encumbering each leased Real Property (where the term of such lease is at least 7 years (including any options to extend)) and the operations ongoing at such site are integral to the Credit Parties’ business and
primarily involve manufacturing and processing operations (with the exception of locations used solely as the Credit Parties’ headquarters, office locations, or for storage or warehousing) of such Credit Party, in each case, as additional
security for the Obligations. The Mortgages or instruments related thereto shall be duly recorded or filed in such manner and in such places as are required by law to establish, perfect, preserve and protect the respective Liens in favor of the
Collateral Trustee required to be granted pursuant to the Mortgages. Such Credit Party shall otherwise take such actions and execute and/or deliver to the Collateral Trustee such documents as the Collateral Trustee (acting at the direction of the
Requisite Holders) or the Requisite Holders shall reasonably require to confirm the validity, perfection and priority of the Liens of any existing Mortgages or such new Mortgages against such after-acquired Real Property. 

  
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 Section 4.22 Leases, Development and Maintenance 

Each Credit Party shall (a) pay and discharge promptly, or cause to be paid and discharged promptly, all rentals, delay rentals,
royalties, overriding royalties, payments out of production and other indebtedness or obligations accruing under, and perform or cause to be performed each and every act, matter or thing required by each and all of, the leases and all other similar
agreements and contracts constituting or affecting the Properties of any Credit Party except, in each case, where the amount thereof is being contested in good faith by appropriate proceedings and except where the nonpayment or non-performance of
which could not reasonably be expected to result in a Material Adverse Change, (b) in all material respects, do all other things necessary to keep unimpaired its rights thereunder and prevent any forfeiture thereof or default thereunder, and
operate or cause to be operated such Properties as a prudent operator would in accordance with industry standard practices and in compliance with all applicable proration and conservation Legal Requirements and any other Legal Requirements of every
Governmental Authority, whether state, federal, municipal or other jurisdiction, from time to time constituted to regulate the production, sale and distribution of chemicals and biofuels and any activities related thereto, and (c) maintain (or
cause to be maintained) the leases, units and acreage to which the Properties of any Credit Party pertain in a prudent manner consistent with industry standard practices provided that such Credit Party shall not be required to maintain such leases,
units and acreage if it in good faith determines, using its business judgment, that such leases, units and/or acreage are not necessary or desirable for the continued efficient and profitable operation of the business of the Credit Parties. 

Section 4.23 Litigation and Other Notices 

If requested by the Trustee upon receiving a Deliverables Notice from the Requisite Holders, each Credit Party shall furnish to the Trustee
written notice of the following as soon as reasonably practicable (and, in any event, within five (5) Business Days of the occurrence thereof) (and Collateral Trustee shall deliver to each Holder a copy of such written notice promptly upon
receipt thereof to the extent that Collateral Trustee has already received such Deliverables Notice): 
 (a) the filing or commencement of,
or any threat or notice of intention of any Person to file or commence, any action, suit, litigation or proceeding, whether at law or in equity by or before any Governmental Authority with respect to any Equity Document or other Indenture Document;
and 
 (b) the occurrence of a Casualty Event, in excess of $250,000. 

Section 4.24 Employee Benefits 

Each Credit Party shall (a) except as could not reasonably be expected to have a Material Adverse Change, with respect to any Plan, comply
in all respects with the applicable provisions of ERISA and the Code and (b) furnish to the Trustee (x) as soon as possible after, and in any event within ten (10) days after any Responsible Officer of any Credit Party knows or has
reason 

  
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to know, that any Termination Event has occurred that, alone or together with any other Termination Event that has occurred, could reasonably be expected to result in liability of any Credit
Party or any Controlled Group member in an aggregate amount exceeding $1,000,000 annually, a statement of a Responsible Officer of the applicable Credit Party setting forth details as to such Termination Event and the action, if any, that the
Company and any applicable Credit Party propose to take with respect thereto, and (y) upon request by the Requisite Holders or the Trustee (at the direction of the Requisite Holders), copies of (i) each Schedule B (Actuarial Information)
to the annual report (Form 5500 Series) filed by any Credit Party or any Controlled Group member with the Internal Revenue Service with respect to each Plan; (ii) the most recent actuarial valuation report for each Plan; (iii) all notices
received by any Credit Party or any Controlled Group member from a Multiemployer Plan sponsor or any governmental agency concerning a Termination Event with respect to matters that could reasonably be expected to result in a liability of any Credit
Party in an amount exceeding the $1,000,000 annually; and (iv) such other documents or governmental reports or filings relating to any Plan or the Multiemployer Plan as the Trustee (at the direction of the Requisite Holders) or Requisite
Holders shall reasonably request with respect to matters that could reasonably be expected to result in a liability of any Credit Party in an amount exceeding the $1,000,000 annually. Notwithstanding any provisions set forth in this
Section 4.24, no notices, statements, schedules, reports, documents, filings or other deliverables shall be sent to Holders under this Section 4.24 unless requested by Requisite Holders (and then only such Holders who so request
deliverables, shall be sent such deliverables). 
 Section 4.25 Compliance with Environmental Laws 

(a) Each Credit Party shall comply, and cause all lessees and other persons occupying Real Property owned, operated or leased by any Credit
Party or any Subsidiary to comply, in all material respects with all Environmental Laws and Environmental Permits applicable to its operations and Real Property; obtain and renew all material Environmental Permits applicable to its operations and
Real Property; and conduct all Responses required by, and in accordance with, Environmental Laws; provided that no Credit Party shall be required to undertake any Response to the extent that its obligation to do so is being contested in good faith
and by proper proceedings and appropriate reserves are being maintained with respect to such circumstances in accordance with GAAP. 
 (b)
If a Default caused by reason of a breach of Section 4.25(a) shall have occurred and be continuing for more than twenty (20) days without any Credit Party commencing activities reasonably likely to cure such Default, at the written request
of the Collateral Trustee (acting at the direction of the Requisite Holders) or the Requisite Holders, such Credit Party shall provide to the Holders within forty-five (45) days after such request, at the expense of the Credit Party, an
environmental assessment report regarding the matters which are the subject of such Default, including, where appropriate, any soil and/or groundwater sampling, prepared by an environmental consulting firm and, in the form and substance reasonably
acceptable to the Requisite Holders and indicating the presence or absence of Hazardous Substances and the estimated cost of any compliance or Response to address them. 

  
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 (c) No Credit Party shall install, nor permit to be installed, in any Property subject to a
Mortgage any Hazardous Substances, other than in material compliance with applicable Environmental Laws. 
 Section 4.26 Information
Regarding Collateral 
 No Credit Party shall effect any change (i) in any Credit Party’s legal name, (ii) in the location
of any Credit Party’s chief executive office, (iii) in any Credit Party’s identity or organizational structure, (iv) in any Credit Party’s Federal Taxpayer Identification Number or organizational identification number, if
any, or (v) in any Credit Party’s jurisdiction of organization (including by merging with or into any other entity, reorganizing, dissolving, liquidating, reorganizing or organizing in any other jurisdiction), until (A) it shall have
given the Collateral Trustee not less than ten (10) days’ prior written notice (in the form of an Officers’ Certificate), or such lesser notice period agreed to by the Required Holders or the Collateral Trustee (with the consent of
the Requisite Holders), of its intention so to do, clearly describing such change and providing such other information in connection therewith as the Requisite Holders may reasonably request (and Collateral Trustee shall deliver a copy of such
notice to each Holder promptly upon receipt thereof); (B) it shall have taken all action reasonably satisfactory to the Requisite Holders to maintain the perfection and priority of the security interest of the Collateral Trustee for the benefit
of the Secured Parties in the Collateral, if applicable; and (C) such change is not otherwise in violation of this Indenture. Each Credit Party agrees, as soon as practicable, to provide the Collateral Trustee with certified Organizational
Documents reflecting any of the changes described in the preceding sentence (and Collateral Trustee shall provide copies of such Organizational Documents to Holders promptly upon receipt thereof). 

Section 4.27 Approvals 

(a) The Credit Parties will promptly obtain all Real Property Approvals which may hereafter become required, necessary or desirable, except to
the extent failure to obtain such Real Property Approvals could not reasonably be expected to result in a Material Adverse Change, and will furnish the Collateral Trustee and Holders with evidence that the Credit Parties have obtained such Real
Property Approval. 
 (b) The Credit Parties will duly perform and comply with all of the terms and conditions of all Real Property
Approvals obtained at any time except as could not reasonably be expected to cause a Material Adverse Change. 
 Section 4.28
Conditions Subsequent 
 Credit Parties shall satisfy and perform, on or prior to the dates required by the terms of Schedule 4.28 to
the Indenture (as extended, in writing, by the Required Holders or the Collateral Trustee (acting with the consent of the Requisite Holders)), each of the conditions specified on Schedule 4.28 to the Indenture as required by the terms of Schedule
4.28 to the Indenture. Anything contained in this Indenture, any other Equity Document or the Indenture Documents to the contrary notwithstanding, the Credit Parties shall not be required to execute, deliver, satisfy or perform any item described on
Schedule 4.28 to the Indenture prior to the dates specified therein. 

  
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 NEGATIVE COVENANTS 

So long as any of the Obligations remain outstanding, each Credit Party agrees, unless the Requisite Holders shall otherwise consent in
writing, to comply with the following covenants: 
 Section 4.29 Liens, Etc. 

No Credit Party shall create, assume, incur, or suffer to exist any Lien on or in respect of any of its Property whether now owned or hereafter
acquired, or assign any right to receive income, except that each Credit Party may create, incur, assume, or suffer to exist any of the following, in each case, solely to the extent that such Liens are not granted for the direct or indirect benefit
of any Unrestricted Subsidiary (other than (x) any Liens permitted under Section 4.29(m) to secure Permitted Subordinated Debt, solely to the extent that the proceeds of such Indebtedness constitute Non-Recourse Investment Assets and are
used to make Investments in Unrestricted Subsidiaries that are permitted under the terms of this Indenture and (y) Liens permitted under Section 4.29(d), Section 4.29(i), Section 4.29(w), Section 4.29(ee) and
Section 4.29(ff), in each case, to the extent such Liens (and the obligations that they secure, if any) are on terms that are no less favorable to the Credit Party, than those that might be obtained at the time from a Person who is not an
Affiliate): 
 (a) Liens granted pursuant to the Security Documents and securing the Obligations; 

(b) purchase money Liens or interests of lessors under Capital Leases or purchase money security interests upon or in any Equipment or for
other fixed or capital assets acquired or held by any Credit Party in the ordinary course of business; provided that, the principal amount of Indebtedness secured by such Liens shall not exceed $2,500,000 in the aggregate at any time outstanding and
that such Indebtedness (i) was incurred solely for the purpose of financing the purchase, acquisition or improvement of the Property purchased, acquired or improved (or refinancing such Indebtedness), (ii) is secured only by such Property
so purchased, acquired or improved and the proceeds and products thereof and not by any other Property of any Credit Party, and (iii) does not exceed the aggregate purchase price of such Property except as otherwise permitted pursuant to a
Permitted Refinancing of such Indebtedness; provided, that in each case, individual financing of Equipment provided by one purchase money lender or lessor may be cross-collateralized to other outstanding financings of Equipment or other fixed or
capital assets provided by such purchase money lender or lessor; 
 (c) Liens for taxes, assessments, or other governmental charges or
levies not yet due or not yet delinquent or, if delinquent, that (provided foreclosure, sale, or other similar proceedings shall not have been initiated) are being contested in good faith by appropriate proceedings, and such reserve as may be
required by GAAP shall have been made therefor; 
 (d) Liens in favor of vendors, carriers, producers, growers, warehousemen, toll
manufacturers, repairmen, mechanics, workmen, materialmen, construction, landlords, laborers, suppliers, purifiers, processors or similar Liens arising by operation of law, in each case, in the ordinary course of business in respect of obligations
that are not yet due or that are being contested in good faith by appropriate proceedings, provided such reserve as may be required by GAAP shall have been made therefor; 

  
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 (e) Liens to secure the Obligations (as defined in the Credit Agreement) and all other
obligations owed by the Credit Parties under the Loan Documents; 
 (f) Liens arising in the ordinary course of business out of pledges or
deposits under workers’ compensation laws, unemployment insurance, old age pensions or other social security or retirement benefits, or similar legislation or to secure public or statutory obligations of any Credit Party; 

(g) Liens set forth on Schedule 4.29 to the Indenture to the extent that such Liens do not secure loans, bonds or other borrowed money; 

(h) easements, rights-of-way, restrictions, farm leases and other similar encumbrances, and minor defects in the chain of title that are
customarily accepted in any Credit Party’s industry, none of which materially interfere with the ordinary conduct of the business of any Credit Party or materially detract from the value or use of the Property to which they apply; 

(i) Licenses of Intellectual Property granted by a Credit Party in the ordinary course of business and other licenses of Intellectual Property
otherwise permitted under Section 4.32 hereof; 
 (j) Liens on cash collateral securing Indebtedness permitted under
Section 4.30(b); 
 (k) bankers’ Liens, rights of setoff and other similar Liens existing solely with respect to cash and cash
equivalents on deposit in one or more accounts maintained by any Credit Party in each case granted in the ordinary course of business in favor of the bank or banks with which such accounts are maintained, to secure Indebtedness permitted under
Section 4.30(o) hereof or otherwise granted in connection with the maintenance of such accounts in the ordinary course of business; 

(l) Liens in favor of vendors or lessors arising under any conditional sale agreement, synthetic lease, or other title retention agreement;

 (m) Liens securing Permitted Subordinated Debt; 

(n) Liens that secure obligations that do not exceed $1,000,000 at any time provided that such obligations (secured by such Liens) do not
consist of loans, bonds or other borrowed money; 
 (o) Liens on cash and cash equivalents deposited with a third-party trustee that arise
in connection with the defeasance, discharge or redemption of Indebtedness to the extent that such defeasance, discharge or redemption of Indebtedness is not prohibited hereunder; 

(p) customary negative pledges on assets being sold or disposed of as part of a Disposition, including customary restrictions on distributions
by a Subsidiary of the Company to be sold, pursuant to an agreement that has been entered into for the sale or disposition of all or substantially all of the Equity Interests or assets of such Person; in each case, provided, that, such Disposition
is permitted under Section 4.32 hereof; 

  
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 (q) Liens on property of a Person existing at the time such Person is acquired pursuant to a
permitted acquisition (or consolidated into a Credit Party as part of such permitted acquisition) provided, that such Liens were not created in contemplation of such acquisition, merger, consolidation or Investment and do not extend to any assets
other than the assets so acquired; 
 (r) deposits in the ordinary course to secure insurance carriers and Liens on premium refunds and
insurance proceeds securing the financing of insurance premiums permitted hereunder; 
 (s) Liens solely on any cash earnest money deposits
made by a Credit Party in connection with a Permitted Investment provided that such deposits themselves are Permitted Investments; 
 (t)
Liens in favor of customs and revenue authorities arising as a matter of law to secure payment of customs duties in connection with the importation or exportation of goods; 

(u) any margin call requirements or any Liens on cash collateral and other assets, in each case, with a value (or, with respect to margin
calls obligations, in an amount) not to exceed $5,000,000 in the aggregate securing obligations in respect of Hedge Contracts permitted pursuant to Section 4.30(d); 

(v) judgment Liens arising solely as a result of the existence of judgments, orders, or awards, including notices of lis pendens and
associated rights related to litigation and other controversies, in each case, that do not constitute an Event of Default hereunder; 
 (w)
the interests of lessors and sublessors under operating leases; 
 (x) Liens on amounts deposited to secure Credit Parties’ obligations
in connection with the making or entering into of bids, tenders, trade contracts, governmental contracts, utilities contracts, or leases in the ordinary course of business and not in connection with the borrowing of money; 

(y) Liens on amounts deposited to secure Credit Parties’ reimbursement and indemnity obligations with respect to surety, performance,
stay, customs or appeal bonds obtained in the ordinary course of business to the extent that such reimbursement and indemnity obligations are permitted under Section 4.30(f) hereof; 

(z) Liens that are replacements of Permitted Liens to the extent that the original Indebtedness is refinanced by a Permitted Refinancing and
so long as the replacement Liens only encumber those assets or classes of assets that secured the original Indebtedness; 
 (aa) Liens to
secure Indebtedness permitted under Section 4.30(q) hereof; 

  
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 (bb) Liens in favor of the indenture trustee (as defined in the Trust Indenture Act), in its
capacity as such and not in any other capacity, if any, under in respect of any Indebtedness permitted by Section 4.30; provided that (i) such Liens only secure (A) a Credit Party’s obligation to pay such indenture trustee
reasonable and customary compensation and the reimbursement of such indenture trustee’s reasonable fees, costs and expenses, in each case, for its services as the indenture trustee and (B) any Credit Party’s obligations to indemnify
the indenture trustee, and (ii) such Lien only attaches to funds held or collected by such indenture trustee in its capacity as the indenture trustee with respect to such Indebtedness; 

(cc) assignments of insurance or condemnation proceeds provided to landlords (or their mortgagees) pursuant to the terms of any lease and
Liens and rights reserved in any lease for rent or for compliance with the terms of such lease; 
 (dd) source code escrow agreements
entered into in the ordinary course of business; 
 (ee) the entering into of marketing distribution, supply, off take, development, or like
agreements, in each case, relating to the sale of Inventory (as defined in the Security Agreement) in the ordinary course of business and containing standard or customary terms for such agreements (which terms may include, without limitation, rights
of first offer and/or exclusivity arrangements); 
 (ff) Liens on Equity Interests or joint ventures or other Unrestricted Subsidiaries,
which Liens consist of restrictions or covenants contained in the documents governing or evidencing any Equity Interest issued by any Unrestricted Subsidiary or any joint venture interest, in each case, that is owned by any Credit Party, including
restrictions providing for customary buy/sell arrangements or restrictions and conditions on assignment or transfer of such Equity Interests or providing for the breach, termination or default under such joint venture, stockholder, membership,
limited liability company, or partnership agreement governing such Equity Interests or joint venture if a security interest therein is granted by in such Equity Interests or joint venture; 

(gg) solely to the extent constituting Liens, (i) the Investments permitted by Sections 4.35(k)(i), (o), and (q) and (ii) the
Dispositions permitted by Sections 4.32(b)(i), (x), (xvi), and (xxii); and 
 (hh) legal retainer(s) paid to legal counsel of Credit Parties
to the extent that the unapplied portion of any such retainer(s) do not exceed $1,000,000 at any time. 
 Section 4.30 Indebtedness,
Guarantees, and Other Obligations 
 No Credit Party shall create, assume, suffer to exist, or in any manner become or be liable in
respect of, any Indebtedness except any of the following, in each case, solely to the extent that such Indebtedness was not created, incurred or assumed (and Credit Parties have not become liable on account of such Indebtedness) for the direct or
indirect benefit of any Unrestricted Subsidiary (other than (x) any Indebtedness permitted under Sections 4.30(h) and 4.30(i), solely to the extent that the proceeds of such Indebtedness constitute Non-Recourse Investment Assets and are used to
make Investments in Unrestricted Subsidiaries that are permitted under the terms of this Indenture and (y) any Indebtedness permitted under Section 4.30(j), (k)(iii) and Section

  
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4.30(n)(ii), in each case, to the extent such Indebtedness is on terms that are no less favorable to the Credit Party, than those that might be obtained at the time from a Person who is not an
Affiliate of a Credit Party): 
 (a) (i) Indebtedness of the Credit Parties under the Loan Documents and (ii) Indebtedness of the
Credit Parties under the Equity Documents, the Notes, and each other Security Document and Indenture Document; 
 (b) Indebtedness set forth
on Schedule 4.30 to the Indenture and any Permitted Refinancing thereof; 
 (c) Indebtedness secured by the Liens permitted under
Section 4.29(b) and any Permitted Refinancing thereof; 
 (d) Indebtedness under Hedge Contracts in each case, entered into in the
ordinary course of business and not purely for speculative purposes; provided that (i) such Indebtedness shall not be secured other than as permitted under Section 4.29(u) hereof, and (ii) such Indebtedness shall not obligate any
Credit Party to any margin call requirements including any requirement to post cash collateral, property collateral or a letter of credit other than as permitted under Section 4.29(u) hereof; 

(e) Indebtedness of any Credit Party owing to any other Credit Party; provided that such Indebtedness is unsecured and shall, upon the
occurrence and during the continuation of an Event of Default be subordinated in right of payment to the payment of the Obligations; 
 (f)
Indebtedness evidenced by letters of credit, surety, statutory and appeal bonds and other credit assurances and similar obligations of a like nature (and unsecured guarantees incurred in the ordinary course of business with respect to surety and
appeal bonds, performance bonds, bid bonds, appeal bonds, completion guarantee and similar obligations), in each case, entered into in the ordinary course of business; 

(g) Indebtedness under the TriplePoint Loan Documents provided that the aggregate principal amount of such Indebtedness shall not exceed
$1,200,000 at any time after the Closing Date and provided that such Indebtedness is subject to the Subordination Agreement; 
 (h) Other
unsecured Indebtedness in an aggregate amount outstanding at any time not to exceed $10,000,000; 
 (i) Permitted Subordinated Indebtedness
in aggregate amount outstanding at any time not to exceed $30,000,000 (not including the Indebtedness permitted under Section 4.30(g) hereof); 

(j) Indebtedness incurred for the acquisition of services, supplies or inventory on normal trade credit in the ordinary course of business;

 (k) Indebtedness consisting of (i) unsecured guarantees arising with respect to customary indemnification obligations to purchasers
in connection with Permitted Dispositions; (ii) unsecured guarantees with respect to Indebtedness of Credit Parties, to the extent that the 

  
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Person that is obligated under such guaranty could have incurred such underlying Indebtedness; and (iii) unsecured guarantees arising with respect to customary indemnification obligations to
purchasers (who are Unrestricted Subsidiaries) in connection with Permitted Dispositions between Credit Parties and Unrestricted Subsidiaries; 

(l) endorsement of instruments or other payment items for deposit in the ordinary course of business; 

(m) Indebtedness owed to any Person providing property, casualty, liability, or other insurance to Credit Parties (including director and
officer insurance), so long as the amount of such Indebtedness is not in excess of the amount of the unpaid cost of, and shall be incurred only to defer the cost of, such insurance; 

(n) (i) liabilities in respect of any indemnification obligation, adjustment of purchase price, non-compete, or similar obligation of Credit
Parties incurred in connection with the consummation of one or more acquisitions permitted under Section 4.35 that do not involve Unrestricted Subsidiaries and (ii) liabilities in respect of any indemnification obligation, adjustment of
purchase price, non-compete, or similar obligation of Credit Parties incurred in connection with the consummation of one or more acquisitions with Unrestricted Subsidiaries permitted under Section 4.35; 

(o) Indebtedness incurred in respect of netting services, overdraft protection, and other like services, in each case, incurred in the
ordinary course of business; 
 (p) accrual of interest, accretion or amortization of original issue discount, or the payment of interest in
kind, in each case, on Indebtedness that otherwise constitutes Indebtedness permitted under this Section 4.30; 
 (q) Indebtedness in
respect of reimbursement obligations associated with letters of credit issued to utility providers in the ordinary course of business as deposits to secure performance of any Credit Party’s obligations to such utility providers; 

(r) Indebtedness in respect of deferred payment contracts for the purchase of corn entered into in the ordinary course of business; and 

(s) Indebtedness in respect of the 2013 Warrants. 

Section 4.31 Agreements Restricting Liens 

No Credit Party shall, nor shall it permit any of its Subsidiaries to, enter into any agreement, instrument, deed or lease which prohibits or
limits the ability of any Credit Party to create, incur, assume or suffer to exist any Lien upon any of their respective properties or revenues, whether now owned or hereafter acquired, or which requires the grant of any security for an obligation
if security is granted for another obligation, except the following: (1) this Indenture, the other Equity Documents and Indenture Documents, or the Loan Documents; (2) covenants in documents creating Liens permitted by Section 4.29
prohibiting further Liens on the properties encumbered thereby; (3) contractual arrangements or covenants described on Schedule 4.31 to the Indenture and, in the case that such arrangements or covenants are in regards to

  
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Indebtedness, any Permitted Refinancing thereof (to the extent permitted under Section 4.30 hereof) and in the case of arrangements or covenants that do not involve Indebtedness, any
agreement evidencing any renewal or extension thereof to the extent permitted hereunder, (4) such restrictions that are binding on a Credit Party at the time such Credit Party first becomes a Subsidiary, so long as such contractual obligations
were not entered into in contemplation of the acquisition whereby such Subsidiary was acquired and so long as such restrictions only apply to such Credit Party, (5) restrictions relative to Liens on Equity Interests or interests in joint
ventures under agreements described in Section 4.29(ff) or that are customary provisions in joint venture agreements and other similar agreements or written arrangements applicable to such joint ventures, in each case, to the extent that such
joint ventures are permitted hereunder, (6) are customary restrictions on leases, subleases, licenses, sublicenses, asset sale or similar agreements, including with respect to Intellectual Property and other similar agreements, in each case, to
the extent leases, subleases, licenses, sublicenses, asset sale or similar agreements are permitted under this Indenture and so long as such restrictions relate solely to the assets subject thereto, (7) are customary provisions restricting
subletting or assignment of any lease governing a leasehold interest of any Credit Party, (8) arise in connection with cash deposits or other deposits permitted under Section 4.29 to the extent that such restriction shall only be in
regards to such deposit(s), (9) the obligations under any Hedge Contracts permitted hereunder solely to the extent that such restriction is in regards to the cash collateral permitted to secure such Hedge Contract under Section 4.29(u)
hereof, (10) the agreements, documents and/or instruments evidencing Indebtedness incurred by Unrestricted Subsidiaries provided that such restrictions shall only apply to the Property of such Unrestricted Subsidiaries, (11) customary
non-assignment provisions in contracts and licenses entered into in the ordinary course of business and (12) any other agreement that does not restrict in any manner (directly or indirectly) Liens created pursuant to the Notes, this Indenture,
or the other Equity Documents or Indenture Documents on any Collateral securing the Obligations and does not require the direct or indirect granting of any Lien securing any Indebtedness or other obligation by virtue of the granting of Liens on or
pledge of property of any Credit Party to secure the Obligations. 
 Section 4.32 Merger or Consolidation; Asset Sales 

No Credit Party shall: 
 (a)
merge or consolidate with or into any other Person; provided that (i) any Guarantor may merge or consolidate with any Person (other than the Company) so long as a Guarantor is the surviving Person or such Person becomes a Guarantor
contemporaneously with such merger or consolidation, (ii) any Credit Party may merge or consolidate with the Company so long as the Company is the surviving Person and (iii) any Unrestricted Subsidiary may merge or consolidate with any
other Unrestricted Subsidiary; or 
 (b) except as provided in clause (a) immediately above, make any Disposition of any of its
Property, other than the following, which shall expressly exclude (x) the sale of the Property located at 502 South Walnut Ave, Luverne, MN 56156 under Section 4.32(b)(vi) other than any such Disposition for fair market value involving
consideration of not more than $500,000 with respect to any single Disposition or series of related Dispositions or more than $2,000,000 in the aggregate for all such Dispositions per year and (y) any of the Equity Interests of Agri-Energy, LLC
(for the avoidance of doubt, the Disposition of Real Property located at 502 

  
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South Walnut Ave, Luverne, MN 56156 shall not be permitted under this Section 4.32(b) other than to the extent that there is availability in the $500,000 and $2,000,000 baskets referenced in
clause (x) immediately above in this Section 4.32(b)): 
  

					
	 (i)  [...***...];
	  	 	*	  

 (ii) the Disposition of cash and Liquid Investments in the ordinary course of business; 

(iii) the Disposition of Property that is (A) obsolete, worn out, depleted or uneconomic and disposed of in the ordinary course of
business, (B) no longer necessary for the business of the Credit Parties as reasonably determined by such Credit Party or (C) with respect to any Equipment, contemporaneously replaced with Equipment of at least comparable value and use;

 (iv) the Disposition of Property (A) between or among Credit Parties and (B) by any Subsidiary that is not a Credit Party to
any Credit Party to the extent such transaction is otherwise permitted hereunder; 
 (v) the Disposition of the Equity Interests of the
Company in connection with a conversion of the Notes into Common Stock; 
 (vi) Dispositions, the proceeds of which (valued at the principal
amount thereof in the case of non-cash proceeds consisting of notes or other debt securities and valued at fair market value in the case of other non-cash proceeds) are less than $15,000,000 with respect to all such Dispositions made through the
Stated Maturity Date; provided (A) the consideration received for such assets shall be in an amount at least equal to the fair market value thereof (with the exception of $250,000 of such consideration, which shall not be required to be
at fair market value) (in the case of any Disposition the proceeds of which are in excess of $10,000,000, determined in good faith by the Board of Directors of the Company (or similar governing body)), (B) no less than 70% of the proceeds
thereof shall be paid in cash or Liquid Investments (with the exception of $250,000 of such consideration, which shall not be required to comply with the requirements set forth in this clause (B)) and (C) at the time of such Disposition, no
Default or Event of Default shall have occurred and be continuing or would result therefrom; 
 (vii) the sale, assignment, transfer,
disposition or discount, in each case, without recourse, of accounts receivable arising in the ordinary course of business but only in connection with a compromise, settlement or collection; 

(viii) to the extent constituting a Disposition, Restricted Payments permitted under Section 4.33; 

  
  

	*	Confidential Treatment Requested 

  
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 (ix) (A) non-exclusive licenses of patents, trademarks, copyrights, and other Intellectual
Property rights, (B) non-perpetual exclusive licenses of patents, trademarks, copyrights, and other Intellectual Property rights with respect to geographic area, fields of use and customized products for specific customers that would not result
in a transfer of title of the licensed property under applicable law, (C) the abandonment, lapse or other disposition of licenses, Intellectual Property or related rights that are no longer material to the conduct of the business of the Credit
Parties as such business is operated and the license, lapse or abandonment of such licenses, Intellectual Property or related rights does not materially detract from any Credit Party’s value, (D) any election not to oppose any adverse
reexamination process with respect to patents of such Credit Party to the extent such course of action is made by such Credit Party in the exercise of its reasonable business judgment and (E) licensees of Intellectual Property in connection
with the settlement of litigation or adverse claims related to such Intellectual Property provided that such settlement would not reasonably be expected to cause a Material Adverse Change; 

(x) leases or subleases of Real Property no longer used or no longer useful in the conduct of the business of any Credit Party and other lease
of Real Property in the ordinary course of business; 
 (xi) sales of Inventory (as defined in the Security Agreement) to buyers in the
ordinary course of business and/or the entering into of marketing distribution, supply, off take, development, or like agreements, in each case, relating to the sale of Inventory in the ordinary course of business and containing standard or
customary terms for such agreements (which terms may include, without limitation, rights of first offer and/or exclusivity arrangements); 

(xii) the abandonment by any Credit Party of any Property rights, franchises, licenses, that such Credit Party reasonably determines are not
useful to its business or no longer commercially desirable, including, without limitation, leasehold interests in Real Property but excluding Intellectual Property; 
  

			
	 (xiii) any Disposition of any Equity Interest of any Unrestricted Subsidiary or any other Investment in any Unrestricted Subsidiary;
[...***...];
	  	*

 (xiv) the granting of Liens permitted by Section 4.29; 

(xv) any Casualty Event so long as the Net Cash Proceeds from such Casualty Event are applied, invested or reinvested in accordance with
Section 3.14(c) hereof (to the extent required thereunder); 
 (xvi) the leasing or subleasing of farmland and other assets of any
Credit Party in the ordinary course of business; 
 (xvii) the sale or issuance of Equity Interests of Company; 

(xviii) [Reserved]; 

  
  

	*	Confidential Treatment Requested 

  
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 (xix) the making of Investments permitted by Section 4.35 and the making of Restricted
Payments permitted by Section 4.33; 
 (xx) dispositions of assets in exchange or trade in for similarly valued assets so long as the
assets so received by the Credit Party have a fair market value that is reasonably equivalent or greater to the fair market value of the assets so disposed by such Credit Party and to the extent that the assets subject to such disposition
constituted Collateral, the assets received in exchange or trade for such assets shall also constitute Collateral; 
 (xxi) the surrender or
waiver of contractual rights or the settlement, release or surrender of contract claims or tort claims, in each case, (x) in the ordinary course of business or (y) to the extent that Credit Parties determine that such surrender, waiver,
settlement or release is desirable, in their business judgment, for the continued efficient and profitable operation of the business of the Credit Parties so long as such surrender, waiver, settlement or release is not reasonably likely to cause a
Material Adverse Change; 
 (xxii) any grant of an option to purchase, lease or acquire property to another Person, so long as the
Disposition resulting therefrom would otherwise be permitted hereunder; 
 (xxiii) [Reserved]; 

(xxiv) Dispositions of Investments in joint ventures to the extent required by, or made pursuant to customary buy/sell arrangements between,
the joint venture parties set forth in joint venture arrangements and similar binding arrangements; 
 (xxv) the unwinding of any Hedge
Contract(s) pursuant to its or their terms; and 
 (xxvi) Dispositions of Property to the extent that (x) such Property is exchanged
for credit against the purchase price of similar replacement Property that is promptly purchased or (y) the proceeds of such Disposition are promptly applied to the purchase price of such replacement Property (which replacement Property is
actually promptly purchased) provided that, in each case, if the Property disposed of constituted Collateral, the replacement Property shall also constitute Collateral. 

(c) Notwithstanding Section 4.32(b) hereof, the Credit Parties shall not transfer, convey, sell, lease or license, exchange, transfer or
otherwise dispose of, in one transaction or a series of transactions, all or substantially all of the Credit Parties’ business and/or Property (by way of merger, asset sale or otherwise). 

For the avoidance of doubt, any Net Cash Proceeds from a Disposition of any Credit Party’s Property shall be subject to the terms of
Section 3.14(a). 
 Section 4.33 Restricted Payments 

No Credit Party shall make any Restricted Payments except: (i) any Subsidiary of the Company may pay cash Dividends to the Company or any
wholly owned Subsidiary of the Company, (ii) if any Subsidiary of the Company is not a wholly owned Subsidiary of the Company, such Subsidiary may pay cash Dividends to its shareholders generally so long as the

  
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Company or its Subsidiary which owns the equity interest or interests in the Subsidiary paying such Dividends receives at least its proportionate share thereof (based upon its relative holdings
of Equity Interests in the Subsidiary paying such Dividends and taking into account the relative preferences, if any, of the various classes of Equity Interests in such Subsidiary), (iii) Credit Parties may make regularly scheduled payments
under the TriplePoint Loan Documents, as in effect on the Closing Date, and other payments on the obligations under the TriplePoint Loan Documents, in each case so long as such payments are permitted at such time under the terms of the Subordination
Agreement, (iv) regularly scheduled interest payments and other payments are permitted, if permitted by the applicable subordination agreement governing such Indebtedness, (v) any Credit Party may make repurchases of Equity Interests
deemed to occur upon the exercise, conversion or exchange of stock options, warrants, other rights to purchase Equity Interests or other convertible or exchangeable securities if such Equity Interests represent all or portion of the exercise price
therefor (but expressly excluding any exchange of convertible notes for Common Stock or other Equity Interests issued by the Company other than on the conversion terms set forth in such convertible notes (and/or any indenture pursuant to which such
convertible notes were issued) (in the case of the convertible notes existing on the Term Loan Closing Date, as such terms are in effect on the Term Loan Closing Date) and including, for the avoidance of doubt, the making of payments (whether in
cash or stock) required in connection therewith in accordance with such terms unless (x) such exchange is deemed to be an at or above market exchange or conversion and (y) the Company receives cash consideration equaling at least
$5,000,000 in connection with such exchange (in addition to the discharge or cancellation of the convertible notes in question); (vi) cash payments in lieu of issuing fractional shares are permitted; (vii) Restricted Payments required in
connection with the exercise of warrants or the conversion of convertible Indebtedness are permitted to the extent that such conversion is for Equity Interests of the Company (and does not involve any cash payments other than in regards to cash
payments made in lieu of issuing fractional shares or payment obligations required under the terms of the 2013 Warrants); (viii) the making of any Restricted Payment (other than Restricted Payments of the type referenced in clause (a)(x) of the
definition of Restricted Payments set forth herein) in exchange for, or out of the net cash proceeds of the substantially concurrent sale (other than to a Subsidiary of the Company) of, Capital Stock of the Company (other than Disqualified Equity
Interests) or from the substantially concurrent contribution of common equity capital to the Company are permitted; (ix) distributions for the sole purpose of allowing the Company or the Guarantors to make distributions to current or former
employees, officers, or directors (or any spouses, ex-spouses, or estates of any of the foregoing) of the Company or any Credit Party, solely in the form of forgiveness of Indebtedness of such Persons owing to the Company or any other Credit Party
on account of redemptions or repurchases of the Equity Interests of the Company or any other Credit Party held by such Persons up to an aggregate amount of $1,000,000 in any given calendar year are permitted; (x) the redemption, defeasance,
repurchase or other acquisition or retirement of subordinated debt of a Credit Party made in exchange for, or out of the substantially concurrent sale of, new subordinated indebtedness qualifying as a Permitted Refinancing are permitted;
(xi) payments of up to $500,000 in the aggregate per year made by the Company or any other Credit Party in respect of withholding or similar taxes payable upon exercise of Equity Interests by, or vesting of any Equity Interests held by, any
future, present or former employee, officer or director of the Company or any other Credit Party are permitted; (xii) cash payments payable on account of the 2013 Warrants, in effect on the date hereof and the cashless exercise of options and
warrants in 

  
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accordance with their terms; and (xiii) payments on, or purchases, redemptions, defeasances or other acquisitions of, Indebtedness of any of the Credit Parties that is contractually
subordinated to the Obligations, in each case, from the proceeds of a Permitted Refinancing thereof (for the avoidance of doubt, nothing in this Section 4.33 shall permit the exchange of convertible notes for Common Stock or other Equity
Interests issued by the Company other than on the conversion terms set forth in such convertible notes (and/or any indenture pursuant to which such convertible notes were issued) (in the case of the convertible notes existing on the Term Loan
Closing Date, as such terms are in effect on the Term Loan Closing Date) unless (x) such exchange is at a conversion price which is deemed to be an at or above market (as defined in Nasdaq listing requirements) exchange or conversion and
(y) the Company receives cash consideration equaling at least $5,000,000 in connection with such exchange (in addition to the discharge or cancellation of the convertible notes in question). 

Section 4.34 Transactions with Affiliates 
  

			
	 No Credit Party shall, directly or indirectly, enter into or permit to exist any transaction (including the purchase, sale, lease or exchange of any
property or the rendering of any service) with any Affiliate of a Credit Party on terms that are less favorable to the Credit Party, than those that might be obtained at the time from a Person who is not an Affiliate; provided, the foregoing
restriction shall not apply to (a) any transaction between the Credit Parties; (b) customary fees paid to, and any indemnity provided for the benefit of, members of the Board of Directors (or similar governing body) of the Company and any
other Credit Party; (c) compensation or fees to, or the provision of benefits for officers, consultants and former consultants, directors and employees of the Company and the other Credit Parties entered into in the ordinary course of business;
(d) transactions or arrangements described in Schedule 4.34 to the Indenture or any renewals or extensions of any such agreements (so long as such renewals or extensions are not less favorable in any material respect to the Company or any of
the other Credit Parties); (e) Restricted Payments permitted to be made under Section 4.33; (f) transactions with consultants, customers, clients, suppliers, lessors, lessees, licensees, licensors or purchasers or sellers of goods or
services, which may include Subsidiaries and Affiliates, in each case in the ordinary course of business and otherwise in compliance with the terms of this Indenture or in accordance with industry practice provided that in the case of transactions
between Credit Parties and such Affiliates and/or Subsidiaries, (i) any payments, royalties, fees, compensation (or agreements to pay) or other consideration from a Credit Party to such Affiliates and Subsidiaries shall not be at a premium to
the prevailing market rates for the applicable goods or service and (ii) any payments, royalties, fees, compensation or other consideration received by Credit Party from such Affiliates and/or Subsidiaries shall not be at a discount to the then
prevailing rate for such goods or service; (g) the issuances of Equity Interests or other securities or other payments, awards or grants in cash, securities or otherwise pursuant to, or the funding of, employment arrangements, stock option and
stock ownership plans or similar employee benefit plans approved by a majority of the Board of Directors of the Company or majority of disinterested members of the Board of Directors or a compensation committee appointed by the Board of Directors;
and (h) the following Investments in Unrestricted Subsidiaries: (i) those Investments made from the Non-Recourse Investment Assets, (ii) Investments pursuant to the subclause (s) in Section 4.35 and
(iii) [...***...]. With respect to all transactions to which the restrictions in this Section 4.34 apply, in regards to any transaction or series of transactions between an Affiliate of the Credit Parties and any Credit Party,
involving aggregate consideration in excess of
	  	 * 

  
  

	*	Confidential Treatment Requested 

  
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$5,000,000, such transaction or series of transactions shall require the approval of the Board of Directors of the Company and evidence of such approval shall be delivered to the Collateral
Trustee. 
  

			
	 Section 4.35 Investments
  

No Credit Party shall make or permit to exist any loans, advances, or capital contributions to, or make any investment in (including,
without limitation, the making of any Acquisition), or purchase or commit to purchase any stock or other securities or evidences of Indebtedness of or interests in any Person or any joint venture (in each case, an “Investment”),
except any of the following Investments, in each case, solely to the extent that such Investments are not made in or for the direct or indirect benefit of any Unrestricted Subsidiary with the exception of (i) those Investments made from the
Non-Recourse Investment Assets, (ii) Investments pursuant to clause (s) below, (iii) [...***...], (iv) the Investment permitted in the parenthesis set forth in Section 4.47(a)(iv) and (v) the Investments referenced in clauses (b), (k)(ii)
and (u)(i) of this Section 4.35, in the case of this clause (v), to the extent such Investments are on terms that are no less favorable to the Credit Party, than those that might be obtained at the time from a Person who is not an
Affiliate:
	  	  
 *

 (a) Investments in cash and/or Liquid Investments; 

(b) trade and customer accounts receivable which are for goods furnished or services rendered in the ordinary course of business and are
payable in accordance with customary trade terms; 
 (c) creation of any additional Subsidiaries in compliance with Section 4.41 and
the other provisions of this Section 4.35 (to the extent that any Investments are being made in or with respect to such Subsidiary); 

(d) Investments received in connection with the bankruptcy or reorganization of, or settlement of delinquent accounts and disputes with,
customers and suppliers, in each case in the ordinary course of business; 
 (e) Investments consisting of any deferred portion of the sales
price or non-cash consideration received by any Credit Party in connection with any Disposition permitted hereunder provided that such Investments are pledged as Collateral hereunder (except to the extent consisting of Excluded Property); 

(f) [Reserved]; 
 (g)
[Reserved]; 
 (h) Investments in negotiable instruments deposited or to be deposited for collection in the ordinary course of business;

 (i) Hedge Contracts to the extent permitted under Section 4.30; 

  
  

	*	Confidential Treatment Requested 

  
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 (j) (i) Investments made with any Non-Recourse Investment Assets and (ii) other Investments
not to exceed $2,500,000 per year; 
 (k) (i) legal retainers deposited with legal counsel to the extent that such retainers do not exceed
$1,000,000 at any time and prepaid expenses, and (ii) advances (including to trade creditors), made in connection with purchases of goods or services in the ordinary course of business; 

(l) Investments by one Credit Party in another Credit Party or Investments by an Unrestricted Subsidiary into another Unrestricted Subsidiary;

 (m) Investments owned by any Credit Party on the Closing Date which are described on Schedule 4.35 to the Indenture; 

(n) Guarantees constituting Indebtedness permitted under Section 4.30 so long as the guaranty is of Indebtedness of a Credit Party
permitted under Section 4.30; 
 (o) deposits of cash made in the ordinary course of business to secure performance of
(i) operating leases of a Credit Party, and (ii) other contractual obligations of a Credit Party that do not constitute Indebtedness, in each case, in the ordinary course of business; 

(p) non-cash loans and advances to employees, officers, and directors of a Credit Party for the purpose of purchasing Equity Interests in the
Company so long as the proceeds of such loans are used in their entirety to purchase such Equity Interests provided that the aggregate amount of such loans outstanding shall not exceed $1,000,000 at any time; 

(q) earnest money deposits made in connection with any letter of intent or purchase agreement in connection with a Permitted Investment
otherwise permitted under this Section 4.35 (and not otherwise prohibited hereunder); 
 (r) guarantees of leases (other than Capital
Leases) or of other obligations, in each case, of a Credit Party that do not constitute Indebtedness, in each case, entered into in the ordinary course of business; 

(s) Investments, the consideration for which consists solely of Equity Interests of the Company; 

(t) [Reserved]; 
 (u) (i) normal
and customary indemnities issued in the ordinary course of business (including in connection with any Permitted Disposition) or (ii) consisting of normal and customary indemnities issued in connection with the issuance and sale of securities
otherwise permitted hereunder; and 
 (v)
[...***...].                                      
                                         
                                         
                                         
                   * 

  
  

	*	Confidential Treatment Requested 

  
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 Section 4.36 Compliance with ERISA 

Except as would not reasonably be expected to result in a Material Adverse Change, without the consent of the Requisite Holders, no Credit
Party or any member of a Controlled Group shall be party, or otherwise subject, to a Plan or Multiemployer Plan. Without limitation to the foregoing, in any event, no Credit Party shall directly or indirectly, (a) engage in any transaction in
connection with which the Company or any Controlled Group member could be subjected to either a civil penalty assessed pursuant to Section 502(c), (i) of ERISA or a tax imposed by Chapter 43 of Subtitle D of the Code with respect to any
Plan; (b) terminate any Plan in a manner, or take any other action with respect to any Plan, which could result in any liability to the Company or any Controlled Group member to the PBGC; (c) fail to make full payment when due of all
amounts which, under the provisions of any Plan, agreement relating thereto or applicable law, the Company or any Controlled Group member is required to pay as contributions thereto; (d) fail to satisfy the minimum funding standards within the
meaning of Sections 412 and 430 of the Code or Sections 302 and 303 of ERISA; (e) permit the actuarial present value of the benefit liabilities (based on reasonable assumptions used to fund such Plan for purposes of Sections 412 and 430 of the
Code) under any Plan maintained by the Company or any Controlled Group member which is regulated under Title IV of ERISA to exceed the current value of the assets (computed on a plan termination basis in accordance with Title IV of ERISA) of such
Plan allocable to such benefit liabilities; (f) acquire a 90% or greater interest in any Person if such Person sponsors, maintains or contributes to, or at any time in the six-year period preceding such acquisition has sponsored, maintained, or
contributed to, (1) any Multiemployer Plan, or (2) any other Plan that is subject to Title IV of ERISA, and in either case, the actuarial present value of the benefit liabilities under such Plan exceeds the current value of the assets
(computed on a plan termination basis in accordance with Title IV of ERISA) of such Plan allocable to such benefit liabilities, and the withdrawal liability, if assessed, could reasonably be expected to result in a Material Adverse Change;
(g) incur a liability to or on account of a Plan under Sections 515, 4062, 4063, 4064, 4201 or 4204 of ERISA; (h) amend a Plan in contravention of Section 206(g) of ERISA; or (i) permit to exist any occurrence of any
“Reportable Event” (as defined in Section 4043 of ERISA, and other than a “Reportable Event” not subject to the provision for 30-day notice to the PBGC or with respect to which the notice requirement is waived under
applicable regulations), or any other event or condition, which presents a material risk of such a termination by the PBGC of any Plan, and in each case in clauses (a) through (i) above, to the extent such event or condition, together with
all other such events or conditions, if any, would reasonably be expected to result in a Material Adverse Change. 
 Section 4.37
Sale-and-Leaseback 
 No Credit Party shall sell or transfer to a Person any Property, whether now owned or hereafter acquired, if at
the time or thereafter, such Credit Party shall lease as lessee such Property or any part thereof or other Property which such Credit Party intends to use for substantially the same purpose as the Property sold or transferred. 

Section 4.38 Change of Business; Accounting Change 

From and after the Closing Date, no Credit Party shall engage in any business other than (i) the businesses engaged in by such Credit
Party on the Closing Date and any businesses similar, related, ancillary or incidental thereto or a reasonable extension, development or 

  
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expansion thereof; (ii) any businesses similar, related, ancillary or incidental thereto, or that is an adjunct thereto (provided that the Requisite Holders consent to such adjunct if
material), or a reasonable extension, development or expansion thereof, and (iii) such other lines of business as may be consented to by the Requisite Holders (“Permitted Business”). No Credit Party shall, nor shall it permit any of
its Subsidiaries to, make a change in the accounting principles employed in the preparation of the financial statements contained in the reports referred to in Section 4.11 or change its fiscal year end unless required to conform to GAAP or
approved in writing by the Requisite Holders. For the avoidance of doubt, whether or not a part of the business of any Credit Party on the Closing Date, the Credit Parties are permitted to engage in the manufacture and distribution of fuels,
chemicals and other renewable alcohols and, subject to Sections 4.29 and 4.32, in the licensing of Intellectual Property owned by the Credit Parties. 

Section 4.39 Organizational Documents, Other Documents 

No Credit Party shall: 
 (a)
amend, supplement, modify or restate its Organizational Documents or allow the Organizational Documents of its Subsidiaries to be amended, in each case, if such amendment, supplement, modification or restatement could, individually or in the
aggregate, reasonably be expected to be materially adverse to the interests of the Holders (including, without limitation, electing to treat any pledged Equity Interests as a “security” under Section 8-103 of the UCC) provided,
however, it is understood and agreed that amendments to the number of authorized shares to increase the number of authorized shares issuable (including the shares issuable under any equity incentive plan) shall not be deemed to be adverse to the
Holders, or 
 (b) amend or modify, or permit the amendment or modification of, any provision of any Indebtedness that is subordinated to
the Obligations in any manner that is adverse in any material respect to the interests of the Holders as determined by the Requisite Holders in their sole discretion unless such amendment, modification or change is permitted at such time under the
applicable subordination agreement, 
 (c) amend or modify, or permit the amendment or modification of, any provision of the Credit
Agreement (or any related Security Instrument) in a manner that is not permitted under the Intercreditor Agreement, 
 (d) amend or modify,
or permit the amendment or modification of, any provision of any TriplePoint Loan Documents in any manner that is not permitted under the Subordination Agreement (as in effect on the date hereof). 

Section 4.40 Use of Proceeds 

No Credit Party will permit the proceeds of the Notes (or any portion thereof) to be used for any purpose other than those permitted by
Section 4.18. No Credit Party shall, nor shall it permit any of its Subsidiaries to, engage in the business of extending credit for the purpose of purchasing or carrying margin stock (within the meaning of Regulation U). No Credit Party nor any
Person acting on behalf of such Credit Party has taken or shall take, nor permit any of the Credit Parties to take any action which might cause any of the Equity Documents or Indenture Documents to violate Regulation T, U or X or any other
regulation of the Board of Governors of 

  
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the Federal Reserve System or to violate Section 7 of the Exchange Act or any rule or regulation thereunder, in each case as now in effect or as the same may hereinafter be in effect,
including without limitation, the use of the proceeds of the Notes to purchase or carry any margin stock in violation of Regulation T, U or X. 

Section 4.41 Additional Subsidiaries 

All Subsidiaries of the Credit Parties (other than the Unrestricted Subsidiaries) shall become Guarantors hereunder in accordance with this
Section 4.41. No Credit Party shall create or acquire any Foreign Subsidiaries without the consent of the Requisite Holders unless such Subsidiary constitutes an Unrestricted Subsidiary and is subject to all of the restrictions in regards to
Unrestricted Subsidiaries set forth herein. Credit Parties shall be permitted to create or acquire Domestic Subsidiaries provided that (a) creating or acquiring such Domestic Subsidiary is not otherwise prohibited hereunder, (b) promptly
(and, in any event within thirty (30) days after such person becomes a Subsidiary or such longer period as approved by the Required Holders or the Collateral Trustee at the direction of the Requisite Holders in their sole discretion), such
Domestic Subsidiary (other than an Unrestricted Subsidiary) delivers to the Collateral Trustee or Administrative Agent (or any successor thereto, including without limitation, Collateral Trustee) on behalf of the Secured Lender Parties and the
Secured Parties hereunder and/or certain other secured parties, certificates, if any, representing all of the Equity Interests of such Domestic Subsidiary that are owned by any Credit Party, together with undated stock powers or other appropriate
instruments of transfer executed and delivered in blank by a duly authorized officer of the relevant Credit Party, and all intercompany notes owing from such Domestic Subsidiary (other than Unrestricted Subsidiary) to any Credit Party together with
instruments of transfer executed and delivered in blank by a duly authorized officer of such Credit Party, (c) promptly (and, in any event within thirty (30) days after such person becomes a Subsidiary or such longer period as approved by
the Required Holders or the Collateral Trustee at the direction of the Requisite Holders in their sole discretion), such new Subsidiary (other than an Unrestricted Subsidiary) executes and delivers to Trustee and Collateral Trustee (and Collateral
Trustee shall deliver to Holders), a supplemental indenture substantially in the form of Annex A hereto and delivering it, together with an Officers’ Certificate and Opinion of Counsel as required by Sections 1.02 and 14.03, to the
Collateral Trustee, a pledge and security agreement in the form of Exhibit E of the Indenture and a Mortgage, in each case, solely with respect to Property constituting Collateral, and such other Security Documents as the Collateral Trustee (acting
at the direction of the Requisite Holders) or the Requisite Holders may reasonably request, (d) promptly (and, in any event within thirty (30) days after such person becomes a Subsidiary or such longer period as approved by the Required
Holders or the Collateral Trustee at the direction of the Requisite Holders in their sole discretion), to the extent not already created and/or perfected, to take all actions reasonably necessary or advisable in the opinion of the Collateral Trustee
(acting at the direction of the Requisite Holders) or the Requisite Holders to cause the Lien in the Collateral created by the applicable Security Document to be duly perfected to the extent required by such agreement in accordance with all
applicable Legal Requirements, including the filing of financing statements in such jurisdictions as may be reasonably requested by the Collateral Trustee (acting at the direction of the Requisite Holders) or the Requisite Holders and (e) the
Company or the applicable Credit Party delivers to the Collateral Trustee (with a copy to each Holder) any certificates, opinions of counsel, title opinions or other documents as the Requisite Holders may reasonably request; provided that, in

  
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any event, no Domestic Subsidiary may be created or acquired if a Default has occurred and is continuing before, or a Default would arise after, giving effect to the creation or acquisition of
such Domestic Subsidiary. For the avoidance of doubt, each Subsidiary Guarantee shall be released in accordance with Article 15. 

Section 4.42 Schedules 

Any modifications or supplements to the Schedules to the Indenture after the date hereof shall not cure (or constitute a waiver of) any Events
of Default that would otherwise arise as a result of the items disclosed in such modifications or supplements. 
 Section 4.43
Anti-Terrorism; Anti-Money Laundering 
 No Credit Party shall, nor shall it permit any of its Subsidiaries to: 

(a) Directly or indirectly, (i) knowingly conduct any business or engage in making or receiving any contribution of funds, goods or
services to or for the benefit of any person described in Section 4.44, (ii) knowingly deal in, or otherwise engage in any transaction relating to, any property or interests in property blocked pursuant to the Executive Order or any other
Anti-Terrorism Law, or (iii) knowingly engage in or conspire to engage in any transaction that evades or avoids, or has the purpose of evading or avoiding, or attempts to violate, any of the prohibitions set forth in any Anti-Terrorism Law (and
the Credit Parties shall deliver to the Holders any certification or other evidence requested from time to time by any Holder in its reasonable discretion, confirming the Credit Parties’ compliance with this Section 4.43). 

(b) Cause or permit any of the funds of such Credit Party that are used to repurchase, redeem or otherwise repay the Notes (or any portion
thereof or applicable Make-Whole Payment) to be derived from any unlawful activity with the result that the issuance of the Notes would be in violation of law. 

Section 4.44 Embargoed Person 

No Credit Party shall, nor shall it permit any of its Subsidiaries to cause or permit (a) any of the funds or properties of the Credit
Parties that are used to repurchase, redeem or otherwise repay the Notes (or any portion thereof or applicable Make-Whole Payment) to constitute property of, or be beneficially owned directly or indirectly by, any person subject to sanctions or
trade restrictions under United States law (“Embargoed Person” or “Embargoed Persons”) that is identified on the “List of Specially Designated Nationals and Blocked Persons” (the “SDN List”) maintained by OFAC
and/or on any other similar list (“Other List”) maintained by OFAC pursuant to any authorizing statute including, but not limited to, the International Emergency Economic Powers Act, 50 U.S.C. §§ 1701 et seq., The Trading with
the Enemy Act, 50 U.S.C. App. 1 et seq., and any executive order or regulation promulgated thereunder with the result that the investment in the Credit Parties (whether directly or indirectly) is prohibited by law, or the Notes would be in violation
of law, the executive order, any related enabling legislation or any other similar executive orders (collectively, “Executive Orders”), or (2) any Embargoed Person to have any direct or indirect interest, of any nature whatsoever in
the Credit Parties, with the result that the investment in the Credit Parties (whether directly or indirectly) is prohibited by law or the Notes are in violation of law. 

  
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 Section 4.45 Optional Prepayments of Debt 

No Credit Party shall optionally prepay, redeem, purchase, defease or otherwise optionally satisfy prior to the scheduled maturity thereof in
any manner any Indebtedness (other than Restricted Payments, which shall be subject to Section 4.33), except (a) the prepayment of the loans made by the lenders to the Company under the Credit Agreement in accordance with the terms of the
Credit Agreement, (b) regularly scheduled or required or mandatory repayments, redemptions, conversions or prepayments of any Indebtedness that is permitted under Section 4.30, (c) prepayments with proceeds of any Permitted
Refinancing, (d) so long as no Event of Default exists or would result therefrom, any other prepayments of Indebtedness permitted under Section 4.30 (e) conversion of convertible notes for Common Stock or other Equity Interests issued
by the Company on the terms set forth in such convertible notes (and/or any indenture pursuant to which such convertible notes were issued) (in the case of the convertible notes existing on the Term Loan Closing Date, as such terms are in effect on
the Term Loan Closing Date) and including, for the avoidance of doubt, the making of payments (whether in cash or stock) required in connection therewith in accordance with such terms and (f) any exchange of convertible notes for Common Stock
or other Equity Interests issued by the Company other than on the conversion terms set forth in such convertible notes (and/or any indenture pursuant to which such convertible notes were issued) (in the case of the convertible notes existing on the
Term Loan Closing Date, as such terms are in effect on the Term Loan Closing Date) and including, for the avoidance of doubt, the making of payments (whether in cash or Common Stock) required in connection therewith in accordance with such terms
provided that (x) such exchange is deemed to be an at or above market exchange or conversion and (y) the Company receives cash consideration equaling at least $5,000,000 in connection with such exchange (in addition to the discharge or
cancellation of the convertible notes in question). 
 Section 4.46 Deposit Accounts 

No Credit Party shall open or maintain any Deposit Accounts except for: 

(a) Deposit Accounts set forth on Schedule 4.46 to the Indenture, and 

(b) Deposit Accounts opened after the date hereof which (i) are subject to account control agreements reasonably acceptable in form and
substance to the Requisite Holders or (ii) constitute an Excluded Deposit Accounts (as defined in the Security Agreement). 

Section 4.47 Unrestricted Subsidiaries 

(a) Conditions to Designation. The Company may designate after the Closing Date any Subsidiary of the Company (including any newly
acquired or newly formed Subsidiary of the Company) or any other Person in which it owns an Equity Interest (regardless of whether such Person constitutes a Subsidiary) as an Unrestricted Subsidiary (a “Designation”) only if: 

(i) no Default or Event of Default has occurred and is continuing immediately after giving effect to such Designation; 

(ii) the Person to be so designated and its Subsidiaries do not at the time of Designation own any Equity Interest issued by or Indebtedness
of, or own or hold any Lien 

  
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securing Indebtedness for borrowed money secured by a Lien on any Property of, the Company or any other Subsidiary of the Company that is not an Unrestricted Subsidiary (or after giving effect to
any concurrent designation as an Unrestricted Subsidiary, will not be an Unrestricted Subsidiary); 
 (iii) the Person to be so designated
and its Subsidiaries do not at the time of Designation have any Indebtedness pursuant to which the lender thereunder has recourse to any of the Property of the Company or any of its Subsidiaries that are not Unrestricted Subsidiaries; 

 

			
	 (iv) the Subsidiary or other Person to be so designated has not, prior to the date of such Designation, received (other than de minimis amounts not to
exceed $25,000 in the aggregate) any Investment by any Credit Party other than any Non-Recourse Investment Assets or Investments made pursuant to Section 4.35(s) [...***...]; and
	  	*

 (v) the Collateral Trustee, on behalf of the Secured Parties, is granted a perfected first priority security
interest (subject to certain of the Permitted Liens) in all of the Equity Interests of such Unrestricted Subsidiaries (or, alternatively, of a holding company that owns 100% of the interests in such Unrestricted Subsidiaries that are indirectly
owned by such Credit Party) owned by the Credit Parties (other than to the extent constituting Excluded Property); 
 provided that none of
the Credit Parties as of the Closing Date shall be permitted to be Designated as an Unrestricted Subsidiary at any time. 
 Each Designation
must be evidenced by promptly delivering to the Trustee a Board Resolution of the Board of Directors of the Company giving effect to such Designation and an Officers’ Certificate certifying compliance with the preceding provisions. 

 

			
	 (b) Covenants Regarding Unrestricted Subsidiaries. Credit Parties shall not provide any direct or indirect financial
support to any
Unrestricted Subsidiaries, whether in the form of (i) Investments to or for the direct or indirect benefit of such
Unrestricted Subsidiaries or other Persons (other than (A) Investments solely from Non-Recourse Investment Assets or
Investments
made pursuant to Section 4.35(s), (B) [...***...] and (C) the Investments referenced in clauses (b), (k)(ii) and (u)(i)
of Section 4.35 provided that, in the case of this clause (C), such Investments are on terms that are no less favorable
to the Credit
Party, than those that might be obtained at the time from a Person who is not an Affiliate of Credit Parties), (ii) the granting of
Liens for the direct or indirect benefit of such Unrestricted Subsidiaries or other Persons
(other than Liens to secure Permitted
Subordinated Debt solely to the extent that the proceeds of such Indebtedness constitute Non-Recourse Investment Assets and are
used to make Investments in Unrestricted Subsidiaries that are permitted
under the terms of this Indenture and Liens permitted
under Section 4.29(d), Section 4.29(i), Section 4.29(w), Section 4.29(ee) and Section 4.29(ff), in each case, to the extent such
Liens (and the obligations that they secure, if any) are on
terms that are no less favorable to the Credit Party, than those that might
be obtained at the time from a Person who is not an Affiliate of Credit Parties), (iii) the incurrence of Indebtedness on account
	  	  

*

  
  

	*	Confidential Treatment Requested 

  
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of or for the direct or indirect benefit of such Unrestricted Subsidiary (including without limitation, guaranteeing any Indebtedness or other obligations of the Unrestricted Subsidiaries) (other
than (x) any Indebtedness permitted under Sections 4.30(h) and 4.30(i), solely to the extent that the proceeds of such Indebtedness constitute Non-Recourse Investment Assets and are used to make Investments in Unrestricted Subsidiaries that are
permitted under the terms of this Indenture and (y) any Indebtedness permitted under Sections 4.30(j), 4.30(k)(iii) and 4.30(n)(ii), in each case, to the extent such Indebtedness is on terms that are no less favorable to the Credit Party, than
those that might be obtained at the time from a Person who is not an Affiliate of Credit Parties), (iv) making Restricted Payments for the direct or indirect benefit of such Unrestricted Subsidiaries or other Persons, (v) making
Dispositions to such Unrestricted Subsidiaries or other Persons (other than in accordance with Sections 4.32 and 4.34 hereof) or (vi) otherwise; provided, however, that this Section 4.47 shall not prohibit the licensing of Intellectual
Property or the purchase and sales of goods and services from such Person to or from the Company in the ordinary course of business to the extent otherwise permitted hereunder or any other transactions that would not be prohibited by
Section 4.34. If an Event of Default has occurred and is continuing with respect to any Credit Party’s failure to comply with this Section 4.47(b) in regards to any Unrestricted Subsidiary that is a Subsidiary of the Company or
another Person, the Required Holders or the Collateral Trustee may (acting at the direction of the Requisite Holders) require that, to the extent such Person is a Subsidiary of the Company, such Unrestricted Subsidiary (other than a Foreign
Subsidiary) become a Guarantor for all purposes hereunder and otherwise require the Credit Party to cause such Unrestricted Subsidiary or Person (other than a Foreign Subsidiary) to comply with all of the provisions set forth in Section 4.41 as
if such Unrestricted Subsidiary or Person was not an Unrestricted Subsidiary provided that re-designating such Unrestricted Subsidiary or Person as a Credit Party shall not be deemed to cure any Event of Default arising as a result of the failure by
the Credit Parties to comply with this Section 4.47(b) or otherwise limit the rights and remedies of the Collateral Trustee and/or Holders in connection therewith. 

Section 4.48 Limitation on Certain Restrictions on Subsidiaries 

No Credit Party shall, nor shall it permit any of its Subsidiaries (other than any Unrestricted Subsidiary) to, directly or indirectly, create
or otherwise cause or suffer to exist or become effective any encumbrance or restriction on the ability of any Subsidiary (other than an Unrestricted Subsidiary) to (a) pay dividends or make any other distributions on its Equity Interests or
any other interest or participation in its profits owned by the Company or any of its Subsidiaries, or pay any Indebtedness owed to the Company or any Subsidiary, (b) make loans or advances to the Company or any of its Subsidiaries or
(c) transfer any of its properties to the Company or any Subsidiary, except for such encumbrances or restrictions existing under or by reason of (i) applicable law; (ii) this Indenture, the other Equity Documents and/or Indenture
Documents or the Credit Agreement or any of the other Loan Documents; (iii) customary provisions restricting subletting or assignment of any lease governing a leasehold interest; (iv) customary provisions restricting assignment of any
agreement entered into in the ordinary course of business; (v) any holder of a Lien permitted by Section 4.29 restricting the transfer of the property subject thereto; (vi) customary restrictions and conditions contained in any
agreement relating to the sale of any Property permitted under Section 4.32 pending the consummation of such sale, (vii) contractual arrangements or covenants described on Schedule 4.31 to the Indenture and, in the case that such
arrangements or covenants are in regards to Indebtedness, 

  
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any Permitted Refinancing thereof (to the extent permitted under Section 4.30 hereof) and in the case of arrangements or covenants that do not involve Indebtedness, any agreement evidencing
any renewal or extension thereof to the extent permitted hereunder, (viii) such restrictions that are binding on a Credit Party at the time such Credit Party first becomes a Subsidiary, so long as such contractual obligations were not entered
into in contemplation of the acquisition whereby such Subsidiary was acquired and so long as such restrictions only apply to such Credit Party, (ix) are customary provisions in joint venture agreements and other similar agreements or written
arrangements applicable to such joint ventures, in each case, to the extent that such joint ventures are permitted hereunder, (x) are customary restrictions on leases, subleases, licenses, sublicenses, asset sale or similar agreements,
including with respect to Intellectual Property and other similar agreements, in each case, to the extent leases, subleases, licenses, sublicenses, asset sale or similar agreements are permitted under this Indenture and so long as such restrictions
relate solely to the assets subject thereto, (xi) are customary provisions restricting subletting or assignment of any lease governing a leasehold interest of any Credit Party, (xii) arise in connection with cash deposits or other deposits
permitted under Section 4.29 to the extent that such restriction shall only be in regards to such deposit(s), (xiii) customary provisions restricting assignment of any agreement entered into in the ordinary course of business,
(xiv) the obligations under any Hedge Contracts permitted hereunder solely to the extent that such restriction is in regards to the cash collateral permitted to secure such Hedge Contract under Section 4.29(u) hereof, or (xv) arise
under any agreement or instrument relating to any Indebtedness permitted to be incurred subsequent to the Closing Date pursuant to Section 4.30 if the restrictions are not more restrictive than those set forth in this Indenture and do not
otherwise impair the ability of the Credit Parties to perform their Obligations. 
 ARTICLE 5 

COLLATERAL AND SECURITY 

Section 5.01 Collateral and Security Documents 

(a) In order to secure the due and punctual payment of the Notes and the other Obligations, the Credit Parties have entered into and delivered
to the Collateral Trustee the Security Agreement and the other Security Documents, in each case, to which it is a party, to create the Liens on the Collateral securing their respective Obligations. Subject to the provisions of the Intercreditor
Agreement and Subordination Agreement, the Collateral Trustee will hold and will be entitled to enforce all Liens on the Collateral created by the Security Documents. This Indenture shall be subject in all respects to the Intercreditor Agreement and
Subordination Agreement. In the event of a conflict between the terms of this Indenture and the Intercreditor Agreement or Security Documents in regards to the Collateral, the Intercreditor Agreement and Security Documents shall control and, in the
event of a conflict between the terms of the Intercreditor Agreement and the Security Documents, the Intercreditor Agreement shall control. In the event of a conflict between the terms of this Indenture and the Subordination Agreement or Security
Documents in regards to the Collateral, the Subordination Agreement and Security Documents shall control and, in the event of a conflict between the terms of the Subordination Agreement and the Security Documents, the Subordination Agreement shall
control. 
 (b) Reserved. 

  
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 (c) Until the Notes and the other Obligations are discharged in full or are otherwise no longer
outstanding, all remedies and enforcement actions in respect of the Collateral and any foreclosure actions in respect of any Liens on the Collateral, and all actions, undertakings or consents by the Collateral Trustee in respect of the Collateral
shall be undertaken solely at the instruction of the Requisite Holders, including without limitation: 
 (i) the exercise or
forbearance from exercise of rights and remedies with respect to the Collateral and enforcement of Liens securing the Obligations; 

(ii) the exercise or forbearance from exercise of rights and powers of a holder of Equity Interests included in the Collateral;

 (iii) the acceptance of Collateral in full or partial satisfaction of any Notes and Subsidiary Guarantees; and 

(iv) the exercise and forbearance from exercise of all rights and remedies of a secured party under the UCC or any similar law
of any applicable jurisdiction or equity. 
 Section 5.02 Authorization of Actions to Be Taken 

(a) Each Holder of Notes, by its acceptance thereof, hereby designates and appoints the Collateral Trustee as its agent under this Indenture,
the Security Documents and the Intercreditor Agreement and each Holder by acceptance of the Notes consents and agrees to the terms of each Security Document and the Intercreditor Agreement, in each case, as originally in effect and as amended,
supplemented or replaced from time to time in accordance with its terms or the terms of this Indenture, authorizes and directs the Collateral Trustee to enter into the Security Documents and the Intercreditor Agreement, and irrevocably authorizes
and empowers the Collateral Trustee to perform its obligations and duties, exercise its rights and powers and take any action permitted or required thereunder that are expressly delegated to the Collateral Trustee by the terms of this Indenture and
the Security Documents (including the Intercreditor Agreement), and consents and agrees to the terms of the Intercreditor Agreement and each Security Document, as the same may be amended, restated, supplemented or otherwise modified from time to
time in accordance with their respective terms. The Collateral Trustee shall hold (directly or through any agent) and is directed by each Holder to so hold, and shall be entitled to enforce on behalf of the Holders all Liens on the Collateral
created by the Security Documents for their benefit, subject to the provisions of the Intercreditor Agreement and the Subordination Agreement. Each Holder of Notes, by its acceptance thereof, hereby designates and appoints the Trustee and Collateral
Trustee as its agent under the Subordination Agreement and each Holder by acceptance of the Notes consents and agrees to the terms of the Subordination Agreement, in each case, as originally in effect and as amended, supplemented or replaced from
time to time in accordance with its terms or the terms of this Indenture, authorizes and directs the Trustee and Collateral Trustee to enter into the Subordination Agreement pursuant to the Joinder and Supplement to Subordination Agreement, and
irrevocably authorizes and empowers the Trustee and Collateral Trustee to perform its obligations and duties, exercise its rights and powers and take any action permitted or required thereunder that are expressly delegated to the Trustee and
Collateral Trustee by the terms of the Subordination Agreement, and consents and agrees to the terms of the Subordination Agreement, as the same may be amended, restated, supplemented or otherwise modified from time to time in accordance with their
respective terms. 

  
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 (b) Each of the Collateral Trustee and the Trustee is authorized and empowered to receive for the
benefit of the Holders of Notes any funds collected or distributed under the Intercreditor Agreement, the Subordination Agreement and the Security Documents and to make further distributions of such funds to the Holders of Notes according to the
provisions of this Indenture. 
 (c) The Trustee shall provide to the Collateral Trustee a copy of each written notice of Default or Event
of Default which the Trustee may receive under Section 11.03(i). Subject to Article 5 hereof and to the Intercreditor Agreement and Subordination Agreement, the Requisite Holders or the Trustee, pursuant to the direction of the Requisite
Holders, shall direct the Collateral Trustee with respect to any action, omission, forbearance, enforcement or exercise of remedies with respect to the Collateral for purposes of any Enforcement Action. Subject to the terms of the Intercreditor
Agreement and the Subordination Agreement, unless receiving a contrary direction from the Requisite Holders, each of the Collateral Trustee and the Trustee is authorized and empowered to institute and maintain such suits and proceedings as it may
deem expedient to protect or enforce the Liens securing the Obligations or to prevent any impairment of Collateral by any acts that may be unlawful or in violation of the Security Documents or this Indenture, and such suits and proceedings as it may
deem expedient to preserve or protect its interests and the interests of the Holders of Notes in the Collateral, including power to institute and maintain suits or proceedings to restrain the enforcement of or compliance with any legislative or
other governmental enactment, rule or order that may be unconstitutional or otherwise invalid if the enforcement of, or compliance with, such enactment, rule or order would impair the Liens securing the Obligations or be prejudicial to the interests
of Holders of Notes, the Collateral Trustee or the Trustee. 
 (d) The Collateral Trustee shall have no obligation whatsoever to the Trustee
or any of the Holders to assure that the Collateral exists or is owned by the Credit Parties or is cared for, protected, or insured or has not been encumbered, or that the Collateral Trustee’s Liens have been properly or sufficiently or
lawfully created, perfected, protected, maintained or enforced or are entitled to any particular priority, or to determine whether all of the Credit Parties’ property constituting Collateral intended to be subject to the Lien and security
interest of the Security Documents has been properly and completely listed or delivered, as the case may be, or the genuineness, validity, marketability or sufficiency thereof or title thereto, or to exercise at all or in any particular manner or
under any duty of care, disclosure, or fidelity, or to continue exercising, any of the rights, authorities, and powers granted or available to the Collateral Trustee pursuant to this Indenture, the Intercreditor Agreement or any other Security
Documents other than as expressly set forth herein or pursuant to the instructions (in writing, to the extent required hereunder) of the Trustee (acting at the direction of the Requisite Holders) or the Requisite Holders in accordance with this
Indenture or as otherwise provided in the Security Documents, it being understood and agreed by the Credit Parties and the Holders that in respect of the Collateral, or any act, omission, or event related thereto, the Collateral Trustee shall have
no other duty or liability whatsoever to the Trustee or any Holder or the Credit Parties as to any of the foregoing. 

  
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 Section 5.03 Application of Proceeds of Collateral 

Upon any realization upon the Collateral from the exercise of any rights or remedies under any Security Document or any other agreement with
any Credit Party which secures any of the Obligations, the proceeds thereof shall be applied in accordance with the terms of the Intercreditor Agreement, the Subordination Agreement and Section 9.06 of this Indenture. 

Section 5.04 [Reserved] 

Section 5.05 Trust Indenture Act Requirements; Opinion of Counsel; Certificates of the Company 

The Credit Parties shall furnish to the Collateral Trustee and the Trustee (a) upon the issuance of any Additional Notes (which, only for
the purposes of this Section 5.05 shall exclude PIK Notes) and (b) at least thirty (30) days prior to the anniversary of the First Issue Date in each year, an Opinion of Counsel, dated as of such date, either (1) stating that, in
the opinion of such counsel, (i) action has been taken with respect to the recording, registering, filing, re-recording, re-registering and re-filing of this Indenture, all supplemental indentures, all Security Documents, financing statements,
continuation statements or notices, recordings or other instruments of further assurance as is necessary to maintain the Liens securing the Obligations and reciting the details of such action or referring to prior Opinions of Counsel in which such
details are given, if applicable, and (ii) based on relevant laws as in effect on the date of such Opinion of Counsel, all financing statements, financing statement amendments and continuation statements have been executed and filed that are
necessary as of such date and during the succeeding 12 months fully to preserve and perfect the Liens securing the Obligations, to the extent the Liens securing the Obligations can be perfected by the filing of a financing statement, and such
Opinion of Counsel may contain customary qualifications and exceptions and may rely on an Officers’ Certificate (as to factual matters only); provided that if there is a required filing of a continuation statement or other instrument
within such 12 month period and such continuation statement or amendment is not effective if filed at the time of the Opinion of Counsel, such Opinion of Counsel may so state and in that case the Credit Parties shall cause a continuation statement
or amendment to be timely filed so as to maintain such Liens and security interests securing the Obligations; or (2) stating that, in the opinion of such counsel, no such action is necessary to maintain such Liens securing the Obligations as
effective and perfected. The Credit Parties shall otherwise comply with the provisions of Trust Indenture Act § 314(b), including, for the avoidance of doubt the requirement to furnish to the Collateral Trustee and the Trustee promptly after
the execution and delivery of this Indenture, an Opinion of Counsel stating that in the opinion of such counsel the Indenture (and/or any applicable filings) have been properly recorded and filed so as to make effective the Lien intended to be
created thereby, and reciting the details of such action (see clause (1) above), or stating that in the opinion of such counsel no such action is necessary to make such Lien effective (see clause (2) above). In addition, to the extent
applicable, the Credit Parties shall cause Trust Indenture Act § 313(b), relating to reports, and Trust Indenture Act § 314(d), relating to the release of property or securities from the Liens securing the Obligations or relating to the
substitution therefor of any property or securities to be subjected to the Liens securing the Obligations, to be complied with. Any certificate or opinion required by Trust Indenture Act § 314(d) may be made by an officer of the Company, except
in cases where Trust Indenture Act § 314(d) requires that such certificate 

  
 D-98 

 
or opinion be made by an independent Person, which Person will be an independent engineer, appraiser or other expert reasonably satisfactory to the Trustee. The determination as to whether an
independent Person needs to sign such certificate or opinion shall be made by the Company and neither the Trustee nor the Collateral Trustee shall have any responsibility related thereto. Notwithstanding anything to the contrary in this Article 5,
the Company shall not be required to comply with all or any portion of Trust Indenture Act § 314(d) if it determines, in good faith based on advice of counsel, that under the terms of Trust Indenture Act § 314(d) and/or any interpretation
or guidance as to the meaning thereof of the Commission or its staff, including “no action” letters or exemptive orders, all or any portion of Trust Indenture Act § 314(d) is inapplicable to one or a series of released Collateral.

 Section 5.06 Further Assurances. 

(a) Reserved. 
 (b) Subject to
the applicable limitations set forth in the Security Documents and this Indenture (including with respect to Excluded Property), to the extent that any Liens securing the Obligations are not perfected as of the First Issue Date (other than as
permitted in this Indenture, the Intercreditor Agreement, the Subordination Agreement or any Security Document) the Company will take such action as to have such Liens perfected prior to the date that is forty-five (45) days from the First
Issue Date unless otherwise set forth in Schedule 4.28. 
 (c) Notwithstanding anything to the contrary in this Indenture, the Notes, the
Intercreditor Agreement, the Subordination Agreement or in any Security Document, unless otherwise directed by Requisite Holders, in no event shall the Collateral Trustee or the Trustee be responsible for, or have any duty or obligation with respect
to, the recording, filing, registering, perfection, protection or maintenance of the security interests or Liens intended to be created by this Indenture or the Security Documents (including without limitation the filing or continuation of any UCC
financing statements, mortgages, security agreements or similar documents or instruments in any U.S. or foreign jurisdiction), nor shall the Collateral Trustee or the Trustee be responsible for, and neither the Collateral Trustee nor the Trustee
makes any representation regarding, the validity, effectiveness or priority of any of the Security Documents or the security interests or Liens intended to be created thereby. 

Section 5.07 Release of Collateral. 

(a) The Liens securing the Obligations on the Collateral shall be automatically terminated and released without further action by any party
(other than satisfaction of any requirements in the Security Documents, the Subordination Agreement and the Intercreditor Agreement, if any), in whole or in part: (i) upon any Disposition of any portion of Collateral in accordance with a
Disposition permitted under the terms of any Indenture Document; (ii) upon payment in full of principal, interest and all other Obligations of the Company under the Notes issued under this Indenture; (iii) at the direction of the Requisite
Holders or as otherwise may be required by the Security Documents; or (iv) if the Collateral is owned by a Guarantor, upon release of such Guarantor from the Guaranteed Obligations in accordance with the provisions hereof. 

  
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 (b) Without the necessity of any consent of or notice to the Trustee or any Holder of the Notes,
any Credit Party may request and instruct the Collateral Trustee to, on behalf of each Holder of Notes, (i) execute and deliver to any Credit Party, as the case may be, for the benefit of any Person, such release documents as may be reasonably
requested, of all Liens held by the Collateral Trustee in any Collateral securing the Obligations, and (ii) deliver any such assets in the possession of the Collateral Trustee to any Credit Party, as the case may be; and Collateral Agent shall
promptly take such actions provided that any such release complies with the terms of this Indenture, the Intercreditor Agreement, the Subordination Agreement and the Security Documents and is accompanied by an Officers’ Certificate and Opinion
of Counsel. 
 (c) The release of any Collateral from the Liens securing the Obligations or the release of, in whole or in part, the Liens
securing the Obligations created by any of the Security Document will not be deemed to impair the Liens securing the Obligations in contravention of the provisions hereof if and to the extent the Collateral or the Liens securing the Obligations are
released pursuant to the terms of this Indenture, the Intercreditor Agreement, the Subordination Agreement and the applicable Security Documents. Each of the Holders of the Notes acknowledges that a release of Collateral or Liens securing the
Obligations strictly in accordance with the terms of this Indenture, the Intercreditor Agreement, the Subordination Agreement and the Security Documents will not be deemed for any purpose to be an impairment of the Security Documents or otherwise
contrary to the terms of this Indenture. 
 ARTICLE 6 

PAYMENTS FREE OF TAXES, ETC. 

Section 6.01 Withholding 

Any and all payments by or on account of any obligation of the Company under this Indenture shall to the extent permitted by Applicable Laws be
made free and clear of and without reduction or withholding for any Taxes. If, however, Applicable Laws require any Tax to be withheld or deducted on any payments by or on account of any obligation of the Company under this Indenture, (i) the
Company shall withhold or deduct such Tax in accordance with such Applicable Laws and timely pay the full amount withheld or deducted to the relevant Governmental Authority in accordance with such Applicable Laws, and (ii) to the extent that
the withholding or deduction is made on account of Indemnified Taxes or Other Taxes, the sum payable by the Company shall be increased as necessary so that after any required withholding or the making of all required deductions (including such
deductions and withholdings applicable to additional sums payable under this Section 6.01) the Holder receives an amount equal to the sum it would have received had no such withholding or deduction been made. 

Section 6.02 Other Taxes 

Without limiting or duplicating the provisions of Section 6.01, the Company shall timely pay any Other Taxes to the relevant Governmental
Authority in accordance with Applicable Laws. 

  
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 Section 6.03 Indemnification 

The Company shall indemnify each Holder, within ten (10) days after written demand therefor delivered to the Trustee, for the full amount
of any Indemnified Taxes or Other Taxes paid by such Holder, on or with respect to any payment by or on account of any obligation of the Company hereunder (including Indemnified Taxes or Other Taxes imposed or asserted on or attributable to amounts
payable under this Article 6) and any reasonable expenses arising therefrom or with respect thereto, whether or not such Indemnified Taxes or Other Taxes were correctly or legally imposed or asserted by the relevant Government Authority. A
certificate as to the amount of such payment or liability delivered to the Company by a Holder shall be conclusive absent manifest error. 

Section 6.04 Evidence of Payment 

Upon request by the Holders after any payment of Taxes by the Company to a Governmental Authority as provided in this Article 6, the Company
shall deliver to the Holders the original or a certified copy of a receipt issued by such Governmental Authority evidencing such payment, a copy of any return required by Applicable Laws to report such payment or other evidence of such payment
reasonably satisfactory to the Holders. 
 Section 6.05 Forms 

A Holder shall, at the time or times prescribed by Applicable Law or as reasonably requested by the Company, deliver such other documentation
prescribed by Applicable Law or reasonably requested by the Company as will enable to the Company to determine whether or not such Holder is subject to withholding, backup withholding and information reporting. Without limiting the generality of the
foregoing, a Holder that is not a “United States person” within the meaning of Section 7701(a)(30) of the Code (a “Non-U.S. Holder”) shall, at the time it acquires the Notes and thereafter as reasonably requested by
the Company or upon the expiration, invalidity or obsolescence of any previously delivered form, furnish to the Company: (a) two (2) accurate and complete originals of the applicable U.S. Internal Revenue Service Form W-8 and a certificate
(substantially in the form of Exhibit D(1) or Exhibit D(2), as applicable) to the effect that the Holder (or its direct or indirect partners, as applicable) is not a “bank” within the meaning of Section 881(c)(3)(A) of
the Code, is not a “10-percent shareholder” within the meaning of Section 881(c)(3)(B) of the Code and is not a controlled foreign corporation described in Section 881(c)(3)(C) of the Code, or (b) any other form prescribed
by Applicable Law as a basis for claiming exemption from or reduction in U.S. federal withholding Tax together with such supplementary documentation as may be prescribed by Applicable Law to permit the Company to determine the withholding or
deduction to be made. In addition, each Holder that is a “United States person” within the meaning of Section 7701(a)(30) of the Code shall, at the time or times prescribed by Applicable Law or as reasonably requested by the Company
or upon the expiration, invalidity or obsolescence of any previously delivered form, furnish to the Company (a) two (2) complete and accurate originals of IRS Form W-9, or (b) any other form prescribed by Applicable Law as a basis for
claiming exemption from backup withholding. 

  
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 Section 6.06 Refunds 

If any Holder determines, in its sole discretion exercised in good faith, that it has received a refund of any Taxes as to which it has been
indemnified pursuant to Article 6 (including by the payment of additional amounts pursuant to Section 6.01), it shall pay to the Company an amount equal to such refund (but only to the extent of indemnity payments made under this Section with
respect to the Taxes giving rise to such refund), net of all out-of-pocket expenses (including Taxes) of such Holder and without interest (other than any interest paid by the relevant Governmental Authority with respect to such refund). The Company,
upon the request of such Holder, shall repay to such Holder the amount paid over pursuant to this Section 6.06 (plus any penalties, interest or other charges imposed by the relevant Governmental Authority) in the event that such Holder is
required to repay such refund to such Governmental Authority. Notwithstanding anything to the contrary in this Section 6.06, in no event will the Holder be required to pay any amount to the Company pursuant to this Section 6.06 the payment
of which would place the Holder in a less favorable net after-Tax position than the Holder would have been in if the Tax subject to indemnification and giving rise to such refund had not been deducted, withheld or otherwise imposed and the
indemnification payments or additional amounts with respect to such Tax had never been paid. This Section 6.06 shall not be construed to require any Holder to make available its Tax returns (or any other information relating to its Taxes that
it deems confidential) to the Company or any other Person. 
 Section 6.07 FATCA 

If a payment made to a Holder under any Note would be subject to U.S. federal withholding Tax imposed by FATCA if such Holder were to fail to
comply with the applicable reporting requirements of FATCA (including those contained in Section 1471(b) or 1472(b) of the Code, as applicable), such Holder shall deliver to the Company at the time or times prescribed by law and at such time or
times reasonably requested by the Company such documentation prescribed by applicable law (including as prescribed by Section 1471(b)(3)(C)(i) of the Code) and such additional documentation reasonably requested by the Company as may be
necessary for the Company to comply with their obligations under FATCA and to determine that such Holder has complied with such Holder’s obligations under FATCA or to determine the amount to deduct and withhold from such payment. 

Section 6.08 Survival 

Without prejudice to the survival of any other agreement of the Company hereunder, the agreements and obligations of the Company contained in
this Article 6 shall survive the payment in full of all amounts due hereunder. 
 ARTICLE 7 

CONVERSION 

Section 7.01 Right to Convert 

(a) Subject to and upon compliance with the provisions of this Indenture (and in the case of a Permitted Holder, subject to such further
restrictions, to the extent applicable, set forth in the Purchase Agreement regarding the Permitted Holders’ obligation to maintain an aggregate minimum percentage ownership of the aggregate Principal Amount outstanding under the Notes

  
 D-102 

 
provided that upon the occurrence and during the continuation of any Significant Event of Default or the acceleration of the Obligations after the occurrence of any Event of Default (which
acceleration has not been rescinded), such restrictions regarding the Permitted Holders’ obligation to maintain an aggregate minimum percentage ownership of the aggregate Principal Amount outstanding under the Notes set forth in the Purchase
Agreement shall not apply to restrict the Permitted Holders in any manner), each Holder shall have the right, at such Holder’s option, at any time commencing on June 15, 2014 until the Close of Business on the Business Day immediately
preceding the Maturity Date, to convert the Principal Amount of any such Notes, or any portion of such Principal Amount, into shares of Common Stock. 

(b) Notwithstanding the foregoing, if a Holder has already delivered a Fundamental Change Purchase Notice with respect to a Note under
Section 8.01, such Holder may convert such Note only if such Holder first withdraws the related Fundamental Change Purchase Notice pursuant to Section 8.03. If a Holder has surrendered such Holder’s Note for required purchase in
connection with a Fundamental Change, such Holder’s right to withdraw the related Fundamental Change Purchase Note and convert each Note that is subject thereto will terminate at the Close of Business on (i) the Business Day immediately
preceding the relevant Fundamental Change Purchase Date or (ii) in the case of a Default by the Company in the payment of the Fundamental Change Purchase Price with respect to such Note, the Business Day immediately preceding the day on which
such Default is no longer continuing. 
 (c) Provisions of this Indenture that apply to conversion of all of a Note also apply to conversion
of a portion of a Note. 
 (d) A Holder of Notes is not entitled to any rights of a holder of shares of Common Stock until such Holder has
converted its Notes, and only to extent such Notes are deemed to have been converted into shares of Common Stock pursuant to this Article 7. 

(e) Notwithstanding any other provision of this Indenture to the contrary, (i) prior to obtaining Stockholder Approval with respect to
the 19.99% Proposal (A) no Holder shall be entitled to receive, and the Company shall not be obligated to pay (whether in cash or in shares of Common Stock), the Voluntary Conversion Make-Whole Payment in connection with a voluntary conversion
by a Holder of all or any portion of the Principal Amount of any Notes into shares of Common Stock pursuant to this Section 7.01 and (B) the Company shall not be permitted to exercise its conversion option with respect to all or any
portion of the Principal Amount of any Notes into shares of Common Stock pursuant to Section 7.07; and (ii) no Holder may voluntarily convert, and the Company may not require a Holder to convert pursuant to Section 7.07, any portion
of the Principal Amount of any Notes into shares of Common Stock, to the extent that (A) such conversion is limited pursuant to the provisions of Section 7.09(a), or (B) upon and after giving effect to such conversion (including the
issuance of any shares of Common Stock in satisfaction of any Make-Whole Payment, as applicable), such Holder (together with such Holder’s Affiliates and any other persons or entities whose Beneficial Ownership (as defined below) of Common
Stock would be aggregated with the Holder’s for purposes of Section 13(d) of the Exchange Act (the “Affiliated Parties”) (including shares held by any “group” of which the Holder or any of its Affiliated Parties
is a member)), would have Beneficial Ownership of more than the applicable ownership limitation under Section 7.01(f) below. 

  
 D-103 

 (f) Notwithstanding the provisions of Section 7.01(e) above, during any period of time in
which a Holder’s Beneficial Ownership of Common Stock is less than 5%, a Holder shall not have the right to convert all or any portion of the Principal Amount of any Notes into shares of Common Stock to the extent that upon and after giving
effect to such conversion (and issuance of any shares of Common Stock in satisfaction of any Make-Whole Payment, as the case may be), such Holder (together with such Holder’s Affiliated Parties (including shares held by any “group” of
which the Holder or any of its Affiliated Parties is a member)) would have Beneficial Ownership of more than 4.99% of the total number of shares of Common Stock then issued and outstanding (the “4.99% Ownership Limitation”);
provided, that, such Holder may, at its option and upon not less than sixty-one (61) days’ prior notice to the Company, elect to increase the 4.99% Ownership Limitation to any other percentage not in excess of 9.99% of the number of
outstanding shares of Common Stock then outstanding (the “9.99% Ownership Limitation”). Any such increase will not be effective until the 61st day after such notice is delivered to the Company. The Company hereby covenants and
agrees not to adopt any shareholder rights plan or take any other action which would have the effect of restricting or adversely affecting the Holder’s election to change such threshold percentage. 

(g) For purposes of Sections 7.01(e) and (f) above, “Beneficial Ownership” shall mean the number of shares of Common
Stock beneficially owned by a Holder and its Affiliated Parties (and any other persons or entities acting as a “group” together with a Holder or any of such Holder’s Affiliated Parties) and shall include the number of shares of Common
Stock issuable upon conversion of the Notes with respect to which such determination is being made, but shall exclude the number of shares of Common Stock which would be issuable upon (i) conversion of the remaining, unconverted portion of the
Notes beneficially owned by such Holder or any of its Affiliated Parties (and any other persons or entities acting as a “group” together with such Holder or any of such Holder’s Affiliated Parties) and (ii) exercise or conversion
of the unexercised or nonconverted portion of any other securities of the Company exercisable for or convertible into Common Stock that are subject to a limitation on conversion or exercise analogous to the limitation contained herein beneficially
owned by such Holder or any of its Affiliated Parties (and any other persons or entities acting as a “group” together with such Holder or any of such Holder’s Affiliated Parties). Except as set forth in the preceding sentence,
for purposes of Sections 7.01(e) and (f), Beneficial Ownership shall be calculated (and, for such purpose, whether any person or entity forms a “group” with any Holder or such Holder’s Affiliated Parties will be determined) in
accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder (or, to the extent that, as a result of a change in law, regulation or interpretation after the date hereof, the equivalent calculation under
Section 16 of the Exchange Act and the rules and regulations thereunder results in a higher Beneficial Ownership for any such party, then such Beneficial Ownership will be calculated in accordance with Section 16 of the Exchange Act and
the rules and regulations thereunder), it being acknowledged by each Holder that the Company is not representing to any Holder that such calculation is in compliance with Section 13(d) of the Exchange Act and each Holder is solely responsible
for any schedules required to be filed in accordance therewith. To the extent that an ownership limitation contained in Section 7.01(f) applies, the determination of whether the Notes owned by a Holder are convertible (in relation to other
securities owned by such Holder together with its Affiliated Parties (and any other persons or entities acting as a “group” together with such Holder or any of such Holder’s Affiliated Parties)) and of which portion of the Notes owned
by such Holder is convertible shall be in the sole discretion of such Holder, and 

  
 D-104 

 
the submission of a Conversion Notice to the Conversion Agent shall be deemed to be such Holder’s determination of whether the Notes owned by such Holder are convertible (in relation to
other securities owned by such Holder together with any of its Affiliated Parties (and any other persons or entities acting as a “group” together with such Holder or any of such Holder’s Affiliated Parties)) and of which portion of
such Notes are convertible, in each case subject to the 9.99% Ownership Limitation or 4.99% Ownership Limitation, as applicable, and neither the Company nor the Conversion Agent shall have any obligation to verify or confirm the accuracy of such
determination. In addition, a determination as to any “group” status as contemplated above shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder.

(h) For the avoidance of doubt, if a Holder purports to convert the Principal Amount of any Notes into shares of Common Stock hereunder and
any delivery otherwise owed to such Holder hereunder is not made, in whole or in part, as a result of the 4.99% Ownership Limitation, the 9.99% Ownership Limitation or any other limitation set forth in Sections 7.01(a), 7.01(e) or 7.09(a), then the
Holder’s rights under the relevant Notes pursuant to which such delivery was not made will not be extinguished and, instead such Notes will be deemed to have never been converted by such Holder. 

Section 7.02 Conversion Procedure 

(a) Each Note shall be convertible at the office of the Conversion Agent. 

(b) In order to exercise the conversion right with respect to any interest in Global Notes, the Holder must complete the appropriate
instruction form for conversion pursuant to the Depository’s book-entry conversion program, furnish appropriate endorsements and transfer documents if required by the Company or the Trustee or Conversion Agent, and pay any transfer taxes or
duties if required pursuant to Section 7.08. However, no service charge will be imposed by the Company, the Trustee or the Registrar for any registration of transfer or exchange of Notes except in compliance with the below provisions governing
exercise of conversion rights. In order to exercise the conversion right with respect to any Physical Notes, the Holder of any such Notes to be converted, in whole or in part, shall: 

(i) complete and manually sign the conversion notice provided on the back of the Note (the “Conversion
Notice”) or facsimile of the Conversion Notice and deliver such notice to a Conversion Agent, which action shall be irrevocable; 

(ii) surrender the Note to the Conversion Agent; 

(iii) if required, furnish appropriate endorsements and transfer documents; and 

(iv) if required pursuant to Section 7.08, pay any transfer taxes or duties. 

The date on which the Holder satisfies all of the applicable requirements set forth above is the “Conversion Date.” 

(c) On the third Business Day immediately following the Conversion Date, the Company shall issue and shall deliver to the converting Holder at
the office of the Conversion 

  
 D-105 

 
Agent, a certificate or certificates for the number of full shares of Common Stock issuable in respect of such conversion in accordance with the provisions of this Article 7. In case any Notes of
a denomination greater than $1,000 shall be surrendered for partial conversion, the Company shall execute and the Trustee shall authenticate and deliver to the Holder of the Notes so surrendered, without charge to such Holder, new Notes in
authorized denominations in an aggregate Principal Amount equal to the unconverted portion of the surrendered Notes. 
 Each conversion
shall be deemed to have been effected as to any such Notes (or portion thereof) on the date on which the requirements set forth above in Section 7.02(b) have been satisfied as to such Notes (or portion thereof) and the Person in whose name any
certificate or certificates for shares of Common Stock shall be issuable upon such conversion shall be deemed to have become, as of the Close of Business on the relevant Conversion Date that such Holder converted the Notes, the holder of record of
the shares of Common Stock represented thereby. 
 (d) Upon the conversion of an interest in a Global Note, the Trustee (or other Conversion
Agent appointed by the Company) shall make a notation on such Global Note as to the reduction in the Principal Amount represented thereby. The Company shall notify the Trustee in writing of any conversions of Notes effected through any Conversion
Agent other than the Trustee. 
 (e) Each share certificate representing Common Stock issued upon conversion of the Notes that are
Restricted Notes shall bear the Restricted Stock Legend as set forth in Section 3.07 and Exhibit A. 
 Section 7.03
Settlement upon Conversion 
 (a) With respect to any conversion of Notes, if any, the Company shall, subject to the provisions of
this Article 7, deliver to converting Holders, in respect of the Principal Amount of Notes being converted, a number of shares of Common Stock equal to the Applicable Conversion Rate, on the third Business Day immediately following the relevant
Conversion Date, together with any applicable Make-Whole Payment in cash or in shares of Common Stock, as applicable, and cash in lieu of any fractional shares of Common Stock pursuant to Section 7.03(d). 

(b) Upon conversion, Holders shall not receive any separate cash payment for accrued and unpaid interest unless such conversion occurs between
a Regular Record Date and the Interest Payment Date to which it relates and the converting Holder was the Holder on the relevant Regular Record Date. 

(c) If Notes are converted after the Close of Business on a Regular Record Date for the payment of interest, Holders of such Notes at the
Close of Business on such Regular Record Date will receive the interest payable on such Notes on the corresponding Interest Payment Date (including any outstanding PIK Interest) notwithstanding the conversion. 

(d) The Company shall not issue fractional shares upon conversion of Notes (and on payment of any Make-Whole Payment in shares of Common
Stock, as applicable). If multiple Notes shall be surrendered for conversion at one time by the same Holder, the number of full shares which shall be issuable upon conversion (and on payment of any Make-Whole Payment in

  
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shares of Common Stock, as applicable) (and the number of fractional shares, if any, for which cash shall be delivered) shall be computed on the basis of the aggregate Principal Amount of the
Notes (or specified portions thereof to the extent permitted hereby) so surrendered (and the aggregate Make-Whole Payment to be paid in shares of Common Stock, if applicable). If any fractional share would be issuable upon the conversion of any
Notes (and on payment of any Make-Whole Payment in shares of Common Stock, as applicable), the Company shall make payment of an amount in cash for the current market value of the fractional shares. The current market value of a fractional share
shall be determined (calculated to the nearest 1/1000th of a share) by multiplying the Last Reported Sale Price of the Common Stock on the relevant Conversion Date by such fractional share and rounding the product to the nearest whole cent. 

(e) By delivery to the Holder of the full number of shares of Common Stock, together with any applicable Make-Whole Payment in cash or in
shares of Common Stock, as applicable, and any cash payment for fractional shares, issuable upon conversion, the Company will be deemed to satisfy in full its obligation to pay the Principal Amount of the Notes so converted, the applicable
Make-Whole Payment, as applicable, and all accrued and unpaid interest to, but excluding, the Conversion Date. 
 (f) If and only if the
Company obtains Stockholder Approval of the 19.99% Proposal, in addition to the consideration due upon conversion as provided herein, each Holder who elects to convert any of its Notes at the Holder’s option will receive a payment (the
“Voluntary Conversion Make-Whole Payment”) for the Notes being converted. The Voluntary Conversion Make-Whole Payment will be an amount equal to the aggregate amount of interest payments that would have been payable on such
converted Notes from the last day through which interest was paid on the Notes (or from the Issue Date if no interest has been paid on the Notes or from the next succeeding Interest Payment Date if such conversion occurs after a Regular Record Date
and on or before the next succeeding Interest Payment Date), through and including the Maturity Date (determined as if such conversion did not occur). If the Company obtains Stockholder Approval of the Stockholder Proposals, the Company may settle
the Voluntary Conversion Make-Whole Payment in cash or in shares of Common Stock, at the Company’s election, subject to the limitations described in Sections 7.01(e) and (f) and in Section 7.09(a). A Holder shall have the right prior
to settlement to notify the Company that any proposed settlement of the Voluntary Conversion Make-Whole Payment in shares of Common Stock would violate such limitations. To the extent that such limitations apply, the number of shares of Common Stock
issuable upon conversion (and the associated Principal Amount of the Notes being converted) and in settlement of the Voluntary Conversion Make-Whole Payment shall be reduced proportionately so that the total number of shares issuable upon and after
giving effect to such conversion and in settlement of the Voluntary Conversion Make-Whole Payment in shares of Common Stock shall not exceed such limitations. In the event that the foregoing structure should in any way adversely affect the
Company’s ability to comply with the applicable rules and regulations of the NASDAQ Stock Market, LLC for purposes of obtaining Stockholder Approval of the 19.99% Proposal, the Company will not have the right to elect to pay the Voluntary
Conversion Make-Whole Payment in shares of Common Stock, and all Voluntary Conversion Make-Whole Payments shall be paid in cash. Subject to the foregoing, if the Company elects to pay the Voluntary Conversion Make-Whole Payment in shares of Common
Stock, the Company will deliver to each Holder of converted Notes a number of shares of Common Stock at settlement equal to (i) the amount of the Voluntary Conversion Make-Whole 

  
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Payment owed to such Holder and being paid in shares of Common Stock divided by (ii) the applicable Conversion Price. Delivery of such shares of Common Stock shall be made in the same manner
as the delivery of shares in settlement of the conversion obligation under this Article 7. If the Company elects or, due to the limitations set forth herein, is obligated to pay the Voluntary Conversion Make-Whole Payment in cash, the Company shall,
on the third Business Day immediately following the relevant Conversion Date, deposit with the Paying Agent a sum (in funds which are immediately available on the due date for such payment) sufficient to pay such Voluntary Conversion Make-Whole
Payment, and (unless such Paying Agent is the Trustee) the Company will promptly notify the Trustee of any failure to take such action. Within two (2) Business Days immediately following the Conversion Date, the Company shall send, or at the
written request and expense of the Company have the Trustee send, a notice to the Holders specifying whether the Company has elected to settle the Voluntary Conversion Make-Whole Payment in cash or in shares of Common Stock (the “Voluntary
Conversion Make-Whole Payment Notice”). If the Company gives the Voluntary Conversion Make-Whole Payment Notice, it shall also deliver a copy of such notice to the Trustee and Paying Agent. With respect to Physical Notes, such delivery
shall be by first class mail, and with respect to Global Notes, such delivery shall be pursuant to the Applicable Procedures of the Depository. 

Section 7.04 Adjustment of Conversion Rate 

The Applicable Conversion Rate shall be adjusted from time to time by the Company if any of the following events occurs as described below,
except that the Company will not make any adjustment to the Conversion Rate if Holders of Notes participate (other than in the case of a share split or share combination), at the same time and on the same terms as holders of shares of Common Stock,
solely as a result of holding the Notes, in any of the transactions described in this Section 7.04, without having to convert their Notes, as if such Holders held a number of shares of Common Stock equal to the Applicable Conversion Rate in
effect immediately prior to the adjustment thereof in respect of such transaction, multiplied by the Principal Amount of Notes held by such Holders. 

(a) If the Company issues shares of Common Stock as a dividend or distribution on the Common Stock, or if the Company effects a share split or
share combination of its Common Stock, the Applicable Conversion Rate will be adjusted based on the following formula: 
  

											
	CR1	 	 = 	 	CR0	 	 × 	  	
  OS1  
	  	
	 	 	 	  	OS0	  	

 where, 
  

	         CR0 
	  =	 the Applicable Conversion Rate in effect immediately prior to the Close of Business on the Record Date for such dividend or distribution, or
immediately prior to the Open of Business on the effective date of such share split or share combination, as applicable; 

  
 D-108 

	         CR1 
	  =	 the Applicable Conversion Rate in effect immediately after the Close of Business on such Record Date or immediately after the Open of
Business on such effective date, as applicable; 

  

	         OS0 
	  =	 the number of shares of Common Stock outstanding immediately prior to the Close of Business on such Record Date or immediately prior to the
Open of Business on such effective date, as applicable; and 

  

	         OS1   
	=	 the number of shares of Common Stock outstanding immediately after giving effect to such dividend, distribution, share split or share
combination. 

 Any adjustment made pursuant to this Section 7.04(a) shall become effective immediately after the
Close of Business on the Record Date for such dividend or distribution, or immediately after the Open of Business on the effective date for such share split or share combination, as applicable. If any dividend or distribution of the type described
in this Section 7.04(a) is declared but not so paid or made, or any such share split or combination is announced but the outstanding shares of Common Stock are not split or combined, as the case may be, the Applicable Conversion Rate shall be
immediately readjusted, effective as of the date the Company’s Board of Directors determines not to pay such dividend or distribution, or not to split or combine the outstanding shares of Common Stock, as the case may be, to the Conversion Rate
that would then be in effect if such dividend, distribution, share split or share combination had not been declared or announced. For the avoidance of doubt, if the application of the foregoing formula would result in a decrease in the Applicable
Conversion Rate, no adjustment to the Applicable Conversion Rate will be made (other than (i) as a result of a reverse share split or share combination or (ii) with respect to the Company’s right to readjust the Applicable Conversion
Rate as described in the immediately preceding sentence). 
 (b) If the Company distributes to all or substantially all holders of shares of
Common Stock any rights, options or warrants entitling them for a period of not more than sixty (60) calendar days after the date of such distribution to subscribe for or purchase shares of Common Stock, at a price per share less than the
average of the Last Reported Sale Prices of the Common Stock over the ten (10) consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the date of such distribution, the Applicable Conversion Rate will be
increased based on the following formula: 
  

											
	CR1	 	 = 	 	CR0	 	 × 	  	
  OS0 + X  
	  	
	 	 	 	  	OS0 + Y	  	

 where, 

  
 D-109 

	         CR0  
	=	 the Applicable Conversion Rate in effect immediately prior to the Close of Business on the Record Date for such distribution;

  

	         CR1 
	=	 the Applicable Conversion Rate in effect immediately after the Close of Business on such Record Date; 

 

	         OS0 
	=	 the number of shares of Common Stock outstanding immediately prior to the Close of Business on such Record Date; 

 

	         X 
	=	 the total number of shares of Common Stock issuable pursuant to such rights, options or warrants; and 

 

	         Y 
	=	 the number of shares of Common Stock equal to the aggregate price payable to exercise such rights, options or warrants divided by the
average of the Last Reported Sale Prices of the Common Stock over the ten (10) consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the date of announcement of the distribution of such rights, options
or warrants. 

 The foregoing increase in the Applicable Conversion Rate shall be successively made whenever any such
rights, options or warrants are distributed and shall become effective immediately after the Close of Business on the Record Date for such distribution. If such rights, options or warrants are not so distributed, the Applicable Conversion Rate will
be immediately decreased to the Conversion Rate that would then be in effect if such Record Date for such distribution had not been fixed. In addition, to the extent that shares of Common Stock are not delivered after the expiration of such rights,
options or warrants, the Applicable Conversion Rate shall be immediately decreased to the Conversion Rate that would then be in effect had the increase made for the distribution of such rights, options or warrants been made on the basis of delivery
of only the number of shares of Common Stock actually delivered. For the avoidance of doubt, if the application of the foregoing formula would result in a decrease in the Applicable Conversion Rate, no adjustment to the Conversion Rate will be made
(other than with respect to the Company’s right to readjust the Applicable Conversion Rate as described in the two immediately preceding sentences). 

In determining whether any rights, options or warrants entitle the holders of shares of Common Stock to subscribe for or purchase or exercise
conversion rights for, shares of Common Stock at a purchase price less than such average of the Last Reported Sale Prices of Common Stock over the ten (10) consecutive Trading Day period ending on, and including, the Trading Day immediately
preceding the date of announcement of such distribution, and in determining the aggregate exercise or purchase price payable for such shares of Common Stock, there shall be taken into account any consideration received by the Company for such
rights, options or warrants and any amount payable upon exercise or conversion thereof, the value of such consideration, if other than cash, to be determined by the Company’s Board of Directors. 

(c) If the Company distributes shares of its Capital Stock, evidences of its indebtedness, other assets or property of the Company or rights,
options or warrants to acquire 

  
 D-110 

 
the Company’s Capital Stock or other securities (the “Distributed Property”), to all or substantially all holders of shares of Common Stock, excluding: 

(i) dividends or distributions of Common Stock or rights, options or warrants as to which an adjustment was effected pursuant
to Section 7.04(a) or Section 7.04(b), as the case may be; 
 (ii) dividends or distributions paid exclusively in
cash as to which an adjustment was effected pursuant to Section 7.04(d); and 
 (iii) Spin-Offs to which the provisions
set forth below in this Section 7.04(c) apply; 
 then the Applicable Conversion Rate will be increased based on the following formula: 

 

											
	CR1	 	 = 	 	CR0	 	 × 	  	   SP0 
	  	
	 	 	 	  	SP0 – FMV	  	

 where, 
  

	         CR0 
	=	 the Applicable Conversion Rate in effect immediately prior to the Close of Business on the Record Date for such distribution;

  

	         CR1 
	=	 the Applicable Conversion Rate in effect immediately after the Close of Business on such Record Date; 

 

	         SP0 
	=	 the average of the Last Reported Sale Prices of the Common Stock over the ten (10) consecutive Trading Day period ending on, and
including, the Trading Day immediately preceding the Ex-Dividend Date for such distribution; and 

  

	         FMV 
	=	 the fair market value (as determined by the Company’s Board of Directors) of the Distributed Property distributed with respect to each
outstanding share of Common Stock on the Ex-Dividend Date for such distribution; 

 provided that if “FMV” as set forth
above is equal to or greater than “SP0” as set forth above, in lieu of the foregoing increase, adequate provision will be made so that each Holder of a Note shall receive on the date
on which the Distributed Property is distributed to holders of the Common Stock, for the Principal Amount of the Notes, the amount and kind of Distributed Property that such Holder would have received had such Holder owned a number of shares of
Common Stock equal to the Applicable Conversion Rate on the Record Date for such distribution; provided further that if the Company’s Board of Directors determines “FMV” for purposes of the foregoing increase by reference to
the actual or when-issued trading market for 

  
 D-111 

 
any securities, it must in doing so consider the prices in such market over the same period used in computing the average of the Last Reported Sale Prices of the Common Stock for purposes of
determining “SP0” as set forth above. 
 An increase in the Applicable
Conversion Rate made pursuant to the immediately preceding paragraph shall become effective immediately after the Close of Business on the Record Date for such distribution. If such distribution is declared but not so paid or made, the Applicable
Conversion Rate shall be decreased to be the Conversion Rate that would then be in effect if such distribution had not been declared. For the avoidance of doubt, if the application of the foregoing formula would result in a decrease in the
Applicable Conversion Rate, no adjustment to the Conversion Rate will be made (other than with respect to the Company’s right to readjust the Applicable Conversion Rate as described in the immediately preceding sentence). 

With respect to an adjustment pursuant to this Section 7.04(c) where there has been a payment of a dividend or other distribution on the
Common Stock of shares of Capital Stock of any class or series, or similar equity interest, of or relating to a Subsidiary, or other business unit or affiliate, of the Company, where such Capital Stock or similar equity interest is listed or quoted
(or will be listed or quoted upon consummation of the Spin-Off) on The New York Stock Exchange, The NASDAQ Global Select Market or The NASDAQ Global Market (or their respective successors) (a “Spin-Off”), the Applicable Conversion
Rate will be increased based on the following formula: 
  

											
	CR1	 	 = 	 	CR0	 	 × 	  	   FMV0 + MP0  
	  	
	 	 	 	  	MP0	  	

 where, 
  

	 CR0 
	=	 the Applicable Conversion Rate in effect immediately prior to the end of the Valuation Period; 

 

	 CR1 
	=	 the Applicable Conversion Rate in effect immediately after the end of the Valuation Period; 

 

	 FMV0 
	=	 the average of the Last Reported Sale Prices of the Capital Stock or similar equity interest distributed to holders of shares of Common Stock
applicable to one share of Common Stock (determined for purposes of the definition of “Last Reported Sale Price” as if such Capital Stock or similar equity interest were Common Stock) over the first ten consecutive Trading Day period
after, and including, the effective date of the Spin-Off (the “Valuation Period”); and 

  

	 MP0 
	=	 the average of the Last Reported Sale Prices of the Common Stock over the Valuation Period. 

The increase in the Applicable Conversion Rate under the immediately preceding paragraph will be determined as of the Close of Business on the
last Trading Day of the Valuation Period but will be given effect immediately after the Close of Business on the Record 

  
 D-112 

 
Date of the Spin-Off; provided that in respect of any conversion during the Valuation Period, references with respect to ten (10) consecutive Trading Days shall be deemed replaced
with such lesser number of Trading Days as have elapsed from, and including, the effective date of such Spin-Off to, and including, the Conversion Date in determining the Applicable Conversion Rate. If any dividend or distribution that constitutes a
Spin-Off is declared but not so paid or made, the Applicable Conversion Rate shall be immediately decreased, effective as of the date the Company’s Board of Directors determines not to pay such dividend or distribution, to the Conversion Rate
that would then be in effect if such dividend or distribution had not been declared. For the avoidance of doubt, if the application of the foregoing formula would result in a decrease in the Applicable Conversion Rate, no adjustment to the
Conversion Rate will be made (other than with respect to the Company’s right to readjust the Applicable Conversion Rate as described in the immediately preceding sentence). 

For purposes of this Section 7.04(c) (and subject in all respect to Section 7.12), rights, options or warrants distributed by the
Company to all holders of the Common Stock entitling them to subscribe for or purchase shares of the Company’s Capital Stock, including Common Stock (either initially or under certain circumstances), which rights, options or warrants, until the
occurrence of a specified event or events (“Trigger Event”): (i) are deemed to be transferred with such Common Stock; (ii) are not exercisable; and (iii) are also issued in respect of future issuances of Common Stock,
shall be deemed not to have been distributed for purposes of this Section 7.04(c) (and no adjustment to the Applicable Conversion Rate under this Section 7.04(c) will be required) until the occurrence of the earliest Trigger Event,
whereupon such rights, options or warrants shall be deemed to have been distributed and an appropriate adjustment (if any is required) to the Applicable Conversion Rate shall be made under this Section 7.04. If any such right, option or
warrant, including any such existing rights, options or warrants distributed prior to the date of this Indenture, is subject to events, upon the occurrence of which such rights, options or warrants become exercisable to purchase different
securities, evidences of indebtedness or other assets or property, then the date of the occurrence of any and each such event shall be deemed to be the date of distribution and Record Date with respect to new rights, options or warrants with such
rights (in which case the existing rights, options or warrants shall be deemed to terminate and expire on such date without exercise by any of the holders thereof). In addition, in the event of any distribution (or deemed distribution) of rights,
options or warrants, or any Trigger Event or other event (of the type described in the immediately preceding sentence) with respect thereto that was counted for purposes of calculating a distribution amount for which an adjustment to the Applicable
Conversion Rate under this Section 7.04(c) was made, (1) in the case of any such rights, options or warrants that shall all have been redeemed or purchased without exercise by any holders thereof, upon such final redemption or purchase
(x) the Applicable Conversion Rate shall be readjusted as if such rights, options or warrants had not been issued and (y) the Applicable Conversion Rate shall then again be readjusted to give effect to such distribution, deemed
distribution or Trigger Event, as the case may be, as though it were a cash distribution, equal to the per share of Common Stock redemption or purchase price received by a holder or holders of shares of Common Stock with respect to such rights,
options or warrants (assuming such holder had retained such rights, options or warrants), made to all holders of shares of Common Stock as of the date of such redemption or purchase, and (2) in the case of such rights, options or warrants that
shall have expired or been terminated without exercise by any holders thereof, the Applicable Conversion Rate shall be readjusted as if such rights, options and warrants had not been issued. 

  
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 For purposes of Section 7.04(a), Section 7.04(b) and this Section 7.04(c), any
dividend or distribution to which this Section 7.04(c) is applicable that also includes one or both of: 
 (A) a
dividend or distribution of shares of Common Stock to which Section 7.04(a) is applicable (the “Clause A Distribution”); or 

(B) a dividend or distribution of rights, options or warrants to which Section 7.04(b) is applicable (the “Clause
B Distribution”), 
 then (1) such dividend or distribution, other than the Clause A Distribution and the Clause B Distribution, shall be
deemed to be a dividend or distribution to which this Section 7.04(c) is applicable (the “Clause C Distribution”) and any adjustment to the Applicable Conversion Rate required by this Section 7.04(c) with respect to such
Clause C Distribution shall then be made, and (2) the Clause A Distribution and Clause B Distribution shall be deemed to immediately follow the Clause C Distribution and any adjustment to the Applicable Conversion Rate required by
Section 7.04(a) and Section 7.04(b) with respect thereto shall then be made, except that, if determined by the Company (I) the “Record Date” for the Clause A Distribution and the Clause B Distribution shall be deemed to be
the Record Date for the Clause C Distribution and (II) any shares of Common Stock included in the Clause A Distribution or Clause B Distribution shall be deemed not to be “outstanding immediately prior to the Close of Business on such Record
Date or immediately prior to the Open of Business on such effective date, as applicable” within the meaning of Section 7.04(a) or “outstanding immediately prior to the Close of Business on such Record Date” within the meaning of
Section 7.04(b). 
 (d) If any cash dividend or distribution is paid or made to all or substantially all holders of shares of Common
Stock, the Applicable Conversion Rate shall be increased based on the following formula: 
  

											
	CR1	 	 = 	 	CR0	 	 × 	  	   SP0 
	  	
	 	 	 	  	SP0 – C	  	

 where, 
  

	         CR0 
	=	 the Applicable Conversion Rate in effect immediately prior to the Close of Business on the Record Date for such dividend or distribution;

  

	         CR1 
	=	 the Applicable Conversion Rate in effect immediately after the Close of Business on the Record Date for such dividend or distribution;

  

	         SP0 
	=	 the average of the Last Reported Sale Prices of the Common Stock over the ten (10) consecutive Trading Day period ending on, and
including, the Trading Day immediately preceding the Ex-Dividend Date for such dividend or distribution; and 

  
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	         C 
	=	 the amount in cash per share the Company distributes to holders of shares of Common Stock. 

The increase in the Conversion Rate under this Section 7.04(d) will become effective immediately after the Close of Business on the
Record Date for such dividend or distribution. If such dividend or distribution is declared but not so paid or made, the Applicable Conversion Rate shall be immediately decreased to the Conversion Rate that would then be in effect if such dividend
or distribution had not been declared. For the avoidance of doubt, if the application of the foregoing formula would result in a decrease in the Applicable Conversion Rate, no adjustment to the Conversion Rate will be made (other than with respect
to the Company’s right to readjust the Applicable Conversion Rate as described in the immediately preceding sentence). 

Notwithstanding the foregoing, if “C” (as defined above) is equal to or greater than “SP0” (as defined above), in lieu of the foregoing increase, each Holder of a Note shall receive, for the Principal Amount of Notes, at the same time and upon the same terms as holders of shares
of Common Stock, the amount of cash that such Holder would have received if such Holder owned a number of shares of Common Stock equal to the Conversion Rate in effect on the Record Date for such dividend or distribution. 

(e) If the Company or any of its Subsidiaries makes a payment in respect of a tender offer or exchange offer for shares of Common Stock
(excluding odd lots of shares of Common Stock), to the extent that the cash and fair market value of any other consideration included in the payment per share of Common Stock exceeds the average of the Last Reported Sale Prices of the Common Stock
over the ten (10) consecutive Trading Day period immediately following, and including, the Trading Day next succeeding the last date (the “Expiration Date”) on which tenders or exchanges may be made pursuant to such tender
offer or exchange offer, the Applicable Conversion Rate will be increased based on the following formula: 
  

											
	CR1	 	 = 	 	CR0	 	 × 	  	   AC + (SP1 ×  OS1)  
	  	
	 	 	 	  	OS0 × SP1	  	

 where 
  

	         CR0 
	  =	 the Applicable Conversion Rate in effect immediately prior to the Close of Business on the Trading Day next succeeding the Expiration Date;

  

	         CR1 
	  =	 the Applicable Conversion Rate in effect immediately after the Close of Business on the Trading Day next succeeding the Expiration Date;

  

	         AC 
	  =	 the aggregate fair market value of all cash and any other consideration (as determined by the Company’s Board of Directors) paid or
payable for shares of Common Stock purchased in such tender offer or exchange offer; 

  
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	 OS0 
	=	 the number of shares of Common Stock outstanding immediately prior to the Expiration Date (prior to giving effect to the purchase of all
shares of Common Stock accepted for purchase or exchange in such tender offer or exchange offer); 

  

	 OS1 
	=	 the number of shares of Common Stock outstanding immediately after the Expiration Date (after giving effect to the purchase of all shares of
Common Stock accepted for purchase or exchange in such tender offer or exchange offer); and 

  

	 SP1 
	=	 the average of the Last Reported Sale Prices of Common Stock over the ten (10) consecutive Trading Day period immediately following, and
including, the Trading Day next succeeding the Expiration Date. 

 The increase in the Applicable Conversion Rate under
this Section 7.04(e) shall occur at the Close of Business on the 10th Trading Day immediately following the Trading Day next succeeding the Expiration Date but will be given effect immediately after the Close of Business on the Expiration Date;
provided that in respect of any conversion within the 10 consecutive Trading Day period immediately following, and including, the Expiration Date, references to 10 consecutive Trading Days shall be deemed replaced with such lesser number of
Trading Days as have elapsed from, and including, the Expiration Date to, and including, the Conversion Date in determining the Applicable Conversion Rate. 

If the Company is obligated to purchase shares of Common Stock pursuant to any such tender offer or exchange offer, but the Company is
ultimately prevented by applicable law from effecting all or any portion of such purchases or all such purchases are rescinded, the Applicable Conversion Rate shall immediately be readjusted to the Conversion Rate that would then be in effect if
such tender offer or exchange offer had not been made or had been made only in respect of the purchases that had been effected. For the avoidance of doubt, if the application of the foregoing formula would result in a decrease in the Applicable
Conversion Rate, no adjustment to the Applicable Conversion Rate will be made (other than with respect to the Company’s right to readjust the Conversion Rate as described in the immediately preceding sentence). 

(f) [Reserved] 
 (g) In addition
to those Conversion Rate adjustments required by Sections 7.04(a), 7.04(b), 7.04(c), 7.04(d) and 7.04(e), and to the extent permitted by applicable law and subject to the applicable rules of NASDAQ Stock Market, LLC and, if applicable, any other
securities exchange on which the Company’s securities are then listed, the Company from time to time (i) may increase the Conversion Rate by any amount for a period of at least twenty (20) Business Days if the Company’s Board of
Directors determines that such increase would be in the Company’s best interest and (ii) may also (but is not required to) increase the Conversion Rate to avoid or diminish any income tax to holders of shares of Common Stock or rights to
purchase shares of Common Stock in connection with any dividend or distribution of shares of Common Stock (or rights to acquire shares of Common Stock) or similar event. Whenever the Conversion Rate is increased pursuant to this
Section 7.04(g), the Company shall mail to Holders of record of the Notes a notice of the increase (in lieu of any notice otherwise required under Section

  
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7.04(j) below) at least five (5) days prior to the date the increased Conversion Rate takes effect, and such notice shall state the increased Conversion Rate and the period during which it
will be in effect. 
 (h) The Applicable Conversion Rate will not be adjusted, among other things: 

(i) upon the issuance of any shares of Common Stock pursuant to any future plan providing for the reinvestment of dividends or
interest payable on the Company’s securities and the investment of additional optional amounts in shares of Common Stock under any plan; 

(ii) upon the issuance of any shares of Common Stock or options or rights to purchase those shares pursuant to any present or
future employee or director benefit plan or program of the Company, or assumed by the Company, or any of the Company’s Subsidiaries; 

(iii) upon the issuance of any shares of Common Stock pursuant to any option, warrant, right or exercisable, exchangeable or
convertible security not described in clause (ii) above and outstanding as of the date the Notes were first issued, except as set forth in Section 7.12; 

(iv) for a change in the par value of the Common Stock; or 

(v) for accrued and unpaid interest, and Additional Interest, if any. 

(i) Adjustments to the Applicable Conversion Rate under this Article 7 shall be calculated to the nearest cent or to the nearest one-ten
thousandth (1/10,000th) of a share of Common Stock. No adjustment shall be made to the Conversion Rate unless such adjustment would require a change of at least 1% in the Applicable Conversion Rate. Any adjustment that would otherwise be
required to be made shall be carried forward and taken into account in any future adjustment. Notwithstanding the foregoing, upon any conversion of the Notes (solely with respect to the Notes to be converted), the Company shall give effect to all
adjustments that Company otherwise has deferred pursuant to the immediately preceding sentence, and those adjustments will no longer be carried forward and taken into account in any future adjustment. 

(j) Whenever the Conversion Rate is adjusted as herein provided, the Company shall promptly file with the Trustee and any Conversion Agent an
Officers’ Certificate setting forth the Conversion Rate after such adjustment and setting forth a brief statement of the facts requiring such adjustment. Unless and until a Trust Officer of the Trustee shall have received such Officers’
Certificate, the Trustee shall not be deemed to have knowledge of any adjustment of the Conversion Rate and may assume without inquiry that the last Conversion Rate of which it has knowledge is still in effect. Promptly after delivery of such
certificate, the Company shall prepare a notice of such adjustment of the Conversion Rate setting forth the adjusted Conversion Rate and the date on which each adjustment became effective and shall mail such notice of such adjustment of the
Conversion Rate to each Holder at such Holder’s latest address appearing in the Register, within twenty (20) days after execution thereof. Failure to deliver such notice shall not affect the legality or validity of any such adjustment.

  
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 (k) In any case in which this Section 7.04 provides that an adjustment shall become
effective immediately after a Record Date for an event, the Company may defer until the occurrence of such event (i) issuing to the Holder of any Notes converted after such Record Date and before the occurrence of such event the additional
shares of Common Stock issuable upon such conversion by reason of the adjustment required by such event over and above the Common Stock issuable upon such conversion before giving effect to such adjustment and (ii) paying to such Holder any
amount in cash in lieu of any fraction pursuant to Section 7.03. 
 (l) For purposes of this Section 7.04, the number of shares of
Common Stock at any time outstanding shall not include shares held in the treasury of the Company, so long as the Company does not pay any dividend or make any distribution on shares of Common Stock held in the treasury of the Company, but shall
include shares issuable in respect of scrip certificates issued in lieu of fractions of shares of Common Stock. 
 Section 7.05
Effect of Reclassification, Consolidation, Merger or Sale 
 In the case of (a) any recapitalization, reclassification or change
of the Common Stock (other than changes resulting from a subdivision or combination), (b) any consolidation, merger or combination involving the Company, (c) any sale, lease or other transfer to a third party of all or substantially all of
the consolidated assets of the Company and its Subsidiaries, or (d) any statutory share exchange, in each case, as a result of which the Common Stock would be converted into, or exchanged for, stock, other securities, other property or assets
(including cash or any combination thereof) (any such event, a “Merger Event”), then, at the effective time of the Merger Event, the Company shall execute with the Trustee a supplemental indenture permitted under Section 14.01
providing for the right to convert the Principal Amount of Notes into the kind and amount of shares of stock, other securities or other property or assets (including cash or any combination thereof) that a holder of a number of shares of Common
Stock equal to the Conversion Rate immediately prior to such Merger Event would have owned or been entitled to receive (the “Reference Property”) upon such Merger Event. If such Merger Event causes the Common Stock to be converted
into the right to receive more than a single type of consideration (determined based in part upon any form of shareholder election), the Reference Property into which the Notes will be convertible will be deemed to be the weighted average of the
types and amounts of consideration received by the holders of shares of Common Stock that affirmatively make such an election. The Company shall notify Holders of the Notes of such weighted average as soon as practicable after such determination is
made. The Company shall not become a party to any Merger Event unless its terms are consistent with the foregoing. For the avoidance of doubt, adjustments to the Conversion Rate pursuant to Section 7.04 do not apply to distributions to the
extent that the right to convert the Notes has been changed into the right to convert into, or exchange for, Reference Property. 
 The
Company shall cause notice of the execution of such supplemental indenture to be mailed to each Holder, at the address of such Holder as it appears on the Register, within twenty (20) days after execution thereof. Failure to deliver such notice
shall not affect the legality or validity of such supplemental indenture. The above provisions of this Section shall similarly apply to successive reclassifications, changes, consolidations, mergers, combinations, sales and conveyances. If this
Section 7.05 applies to any event or occurrence, Section 7.04 shall not apply. 

  
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 Section 7.06 Adjustments of Prices 

Whenever any provision of this Indenture requires a calculation of the Last Reported Sale Prices over a span of multiple days, the Company will
make appropriate adjustments determined by the Company or its agents to account for any adjustment to the Conversion Rate that becomes effective, or any event requiring an adjustment to the Conversion Rate where the Ex-Dividend Date, Record Date,
effective date or expiration date, as the case may be, of the event occurs, at any time during the period during which such prices are to be calculated. Such adjustments will be effective as of the Ex-Dividend Date, Record Date, effective date or
expiration date, as the case may be, of the event causing the adjustment to the Conversion Rate. 
 Section 7.07 Company’s
Conversion Option 
 (a) The Company may, from time to time, at any time during the period commencing on the later of the date the
Company obtains Stockholder Approval of the 19.99% Proposal and six (6) months after the First Issue Date and ending on the Close of Business on the Business Day immediately preceding the Maturity Date, elect to mandatorily require the Holders
to convert some or all of the Notes at the then applicable Conversion Rate, if the Last Reported Sale Price of the Common Stock over any ten (10) consecutive Trading Days during such period equals or exceeds 150% of the then applicable
Conversion Price (a “Conversion Event”) by sending, or at the written request and expense of the Company having the Trustee send, a notice (the “Conversion Event Company Notice”) within twenty (20) Trading Days
of the Conversion Event and not more than thirty (30) Trading Days but not less than ten (10) Trading Days prior to the day selected by the Company on which the Notes will be converted pursuant to the Company’s conversion option (the
“Company Conversion Date”; and the date such Company Conversion Notice is sent to the Holders in the manner herein provided, the “Company Conversion Notice Date”). If the Company gives such notice, it shall also
deliver a copy of such Company Conversion Notice to the Trustee and Paying Agent. With respect to Physical Notes, such delivery shall be by first class mail, and with respect to Global Notes, such delivery shall be pursuant to the Applicable
Procedures of the Depository. 
 Each Company Conversion Notice shall state: 

(i) the Company Conversion Notice Date; 

(ii) the aggregate principal amount of Notes to be converted; 

(iii) that the Company Conversion Notice is being made pursuant to this Section 7.07; 

(iv) the events causing the Conversion Event and the date(s) of the Conversion Event; 

(v) the Applicable Conversion Rate and any adjustments to the Applicable Conversion Rate; 

(vi) whether the Company has elected to settle the Conversion Event Make-Whole Payment (as defined below) in cash or in shares
of Common Stock; 

  
 D-119 

 (vii) the Company Conversion Date; 

(viii) the name and address of the Paying Agent and the Conversion Agent; and 

(ix) the procedures that Holders must follow to allow the Company to convert their Notes, including the place or places where
Holders will be required to surrender the Notes. 
 The Company’s election of its conversion option hereunder must be made equally and proportionately
with respect to any and all Notes duly issued hereunder (or, in the case of Global Notes, pursuant to Applicable Procedures that most nearly approximate a pro rata selection), and the Last Reported Sale Price of the Common Stock must equal or exceed
150% of the then applicable Conversion Price on both the date of the Company’s election and on the Company Conversion Date. Notwithstanding the Company’s election of its conversion option hereunder, the Holders shall not be required to
convert to the extent such conversion would result in such Holders receiving more than 2,000,000 shares of Common Stock in any three (3) month period, and such conversion shall be subject to the limitations described in Sections 7.01(e) and
(f) and in Section 7.09(a). In connection with the Company’s exercise of its conversion option under this Section 7.07, the Holders will receive upon conversion, in addition to and concurrently with the other consideration
payable upon conversion under this Article 7, a payment (the “Conversion Event Make-Whole Payment”) for the Notes being converted in an amount equal to the aggregate amount of interest payments that would have been payable on such
converted Notes from the last day through which interest was paid on the Notes (or from the Issue Date if no interest has been paid on the Notes or from the next succeeding Interest Payment Date if such conversion occurs after a Regular Record Date
and on or before the next succeeding Interest Payment Date), through and including the Maturity Date (determined as if such conversion did not occur). 

(b) The Company may settle the Conversion Event Make-Whole Payment in cash or in shares of Common Stock, at the Company’s election,
subject to the limitations described in Sections 7.01(e) and (f) and in Section 7.09(a). A Holder shall have the right prior to settlement to notify the Company that any proposed settlement of the Conversion Event Make-Whole Payment in
shares of Common Stock would violate such limitations. Notwithstanding the foregoing, in the event that the foregoing structure should in any way adversely affect the Company’s ability to comply with the applicable rules and regulations of the
NASDAQ Stock Market, LLC for purposes of obtaining Stockholder Approval of the 19.99% Proposal, the Company will not have the right to elect to pay the Conversion Event Make-Whole Payment in shares of Common Stock, and all Conversion Event
Make-Whole Payments shall be paid in cash. Subject to the foregoing, if the Company elects to pay the Conversion Event Make-Whole Payment in shares of Common Stock, the Company will deliver to each Holder of converted Notes a number of shares of
Common Stock at settlement equal to (i) the amount of the Conversion Event Make-Whole Payment owed to such Holder and being paid in shares of Common Stock divided by (ii) the applicable Conversion Price. Delivery of such shares of Common
Stock shall be made in the same manner as the delivery of shares in settlement of the conversion obligation under this Article 7. If the Company elects or, due to the limitations set forth herein, is obligated to pay the Conversion Event Make-Whole
Payment in cash, the Company shall, on the third Business Day immediately following the relevant Company 

  
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Conversion Date, deposit with the Paying Agent a sum (in funds which are immediately available on the due date for such payment) sufficient to pay such Conversion Event Make-Whole Payment, and
(unless such Paying Agent is the Trustee) the Company will promptly notify the Trustee of any failure to take such action. 
 (c)
Notwithstanding the foregoing, the Company shall not be entitled to exercise its conversion option under Sections 7.07(a) and (b) hereof if (i) an Event of Default has occurred and is continuing, (ii) a Filing Failure, Effectiveness
Failure or Maintenance Failure (as such terms are defined in the Registration Rights Agreement) or other event has occurred as a result of which sales of all of the shares of Common Stock to be issued under Sections 7.07(a) and (b) hereof
cannot be made under an effective registration statement, (iii) the Company has not listed or caused to have quoted all of the shares of Common Stock to be issued under Section 7.07(a) and (b) hereof on the NASDAQ Stock Market, LLC
and/or each national securities exchange or over-the-counter or other domestic market on which the Common Stock is then listed or quoted, (iv) such exercise (which, for the avoidance of doubt, includes any related Make-Whole Payment) would
otherwise violate Sections 7.01(e), 7.01(f) and 7.09(a) of this Indenture or the listing requirements or other rules or regulations of the NASDAQ Stock Market, LLC and/or each national securities exchange or over-the-counter or other domestic market
on which the Common Stock is then listed or quoted, or (v) the Company shall not have obtained Stockholder Approval of the 19.99% Proposal. 

Section 7.08 Taxes on Shares Issued 

Any issue of share certificates on conversions of Notes shall be made without charge to the converting Holder for any documentary, transfer,
stamp or any similar tax in respect of the issue thereof, and the Company shall pay any and all documentary, stamp or similar issue or transfer taxes or duties that may be payable in respect of the issue or delivery of shares of Common Stock on
conversion of Notes pursuant hereto. The Company shall not, however, be required to pay any such tax which may be payable in respect of any transfer involved in the issue and delivery of shares in any name other than that of the Holder of any Notes
converted, and the Company shall not be required to issue or deliver any such share certificate unless and until the Person or Persons requesting the issue thereof shall have paid to the Company the amount of such tax or shall have established to
the satisfaction of the Company that such tax has been paid. 
 Section 7.09 Reservation of Shares; Shares to be Fully Paid;
Compliance with Governmental Requirements 
 (a) Notwithstanding any other provision of this Indenture to the contrary, prior to the
Company obtaining Stockholder Approval for the Authorized Shares Proposal, no Holder will convert, and the Company may not require a Holder to convert pursuant to Section 7.07, such portion of the Principal Amount of any Notes into shares of
Common Stock, if and to the extent that the Company does not have a sufficient number of shares of Common Stock authorized but unissued to effect the issuance of the shares of Common Stock deliverable pursuant to such conversion; and provided
further, that the Company shall not be allowed to elect to pay all or any portion of any Make-Whole Payment in shares of Common Stock to the extent that after the issuance of the shares of Common Stock deliverable pursuant to such conversion the
Company 

  
 D-121 

 
would not have a sufficient number of shares of Common Stock authorized but unissued to effect the issuance of the shares of Common Stock to make such Make-Whole Payment in shares of Common
Stock. 
 (b) Upon the issuance of any Notes, including PIK Notes, and upon any adjustment to the Conversion Price, the Company shall
reserve, if necessary, free from preemptive rights, out of its authorized but unissued shares or shares held in treasury, sufficient shares of Common Stock, to provide for the conversion of the Notes, subject to the limitations set forth in Sections
7.01(e) and (f) and shall not issue such shares as are so reserved for any other purpose except to the extent that the Notes are otherwise retired pursuant to the terms of this Indenture; provided, however, that if prior to obtaining
Stockholder Approval for the Authorized Shares Proposal, the Company does not have a sufficient number of shares of Common Stock authorized for such purpose, it shall so notify the Trustee and the number of shares of Common Stock reserved for such
issuance shall be limited to the number of shares of Common Stock legally available therefor. 
 (c) Before taking any action that would
cause an adjustment increasing the Conversion Rate to an amount that would cause the Conversion Price to be reduced below the then par value, if any, of the shares of Common Stock issuable upon conversion of the Notes, the Company will take all
corporate action which may, in the opinion of its counsel, be necessary in order that the Company may validly and legally issue shares of such shares of Common Stock at such adjusted Conversion Price. 

(d) Subject to the Sections 7.09(a) and (b) above, the Company covenants that all shares of Common Stock that may be issued upon
conversion of Notes or in settlement of a Make-Whole Payment in shares of Common Stock shall be newly issued shares or treasury shares, shall be duly authorized, validly issued, fully paid and non-assessable and shall be free from preemptive rights
and free from any lien or adverse claim. 
 Section 7.10 Responsibility of Trustee and Conversion Agent 

The Trustee and any other Conversion Agent shall not at any time be under any duty or responsibility to any Holder to determine the Conversion
Rate or whether any facts exist which may require any adjustment of the Conversion Rate, or with respect to the nature or extent or calculation of any such adjustment when made, or with respect to the method employed, or herein or in any
supplemental indenture provided to be employed, in making the same. The Trustee and any other Conversion Agent shall not be accountable with respect to the validity or value (or the kind or amount) of any Common Stock, or of any securities or
property, which may at any time be issued or delivered upon the conversion of any Notes; and the Trustee and any other Conversion Agent make no representations with respect thereto. Neither the Trustee nor any Conversion Agent shall be responsible
for any failure of the Company to issue, transfer or deliver any shares of Common Stock or share certificates or other securities or property or cash upon the surrender of any Notes for the purpose of conversion or to comply with any of the duties,
responsibilities or covenants of the Company contained in this Article 7. Without limiting the generality of the foregoing, neither the Trustee nor any Conversion Agent shall be under any responsibility to determine the correctness of any provisions
contained in any supplemental indenture entered into pursuant to Section 7.05 relating either to the kind or 

  
 D-122 

 
amount of shares of stock or securities or property (including cash) receivable by Holders upon the conversion of their Notes after any event referred to in such Section 7.05 or to any
adjustment to be made with respect thereto, but, subject to the provisions of Section 11.01, may accept as conclusive evidence of the correctness of any such provisions, and shall be protected in relying upon, the Officers’ Certificate
(which the Company shall be obligated to file with the Trustee prior to the execution of any such supplemental indenture) with respect thereto. 

Section 7.11 Notice to Holders Prior to Certain Actions 

In case: 
 (a) the Company shall
declare a dividend (or any other distribution) on Common Stock that would require an adjustment in the Conversion Rate pursuant to Section 7.04; or 

(b) the Company shall authorize the granting to the holders of all or substantially all of the shares of Common Stock of options, rights or
warrants to subscribe for or purchase any share of any class or any other options, rights or warrants; or 
 (c) of any reclassification or
reorganization of the Common Stock (other than a subdivision or combination of its outstanding Common Stock, or a change in par value, or from par value to no par value, or from no par value to par value), or of any consolidation or merger to which
the Company is a party and for which approval of any shareholders of the Company is required, or of the sale, lease or transfer of all or substantially all of the assets of the Company; or 

(d) of the voluntary or involuntary dissolution, liquidation or winding up of the Company or any Significant Subsidiary that is a Credit
Party; 
 then, in each case, the Company shall cause to be filed with the Trustee and the Conversion Agent and to be mailed to each Holder at such
Holder’s address appearing on the list of Holders provided for in Section 3.06 of this Indenture, as promptly as practicable, a notice stating (i) the date on which a record is to be taken for the purpose of such dividend,
distribution or rights or warrants, or, if a record is not to be taken, the date as of which the holders of shares of Common Stock of record to be entitled to such dividend, distribution or rights are to be determined, or (ii) the date on which
such reclassification, reorganization, consolidation, merger, sale, lease, transfer, dissolution, liquidation or winding up is expected to become effective or occur, and the date as of which it is expected that holders of shares of Common Stock of
record shall be entitled to exchange their shares of Common Stock for securities or other property deliverable upon such reclassification, reorganization, consolidation, merger, sale, transfer, dissolution, liquidation or winding up. Failure to give
such notice, or any defect therein, shall not affect the legality or validity of such dividend, distribution, reclassification, reorganization, consolidation, merger, sale, transfer, dissolution, liquidation or winding up. 

Section 7.12 Shareholder Rights Plan 

Each share of Common Stock issued upon conversion of Notes or in settlement of a Make-Whole Payment in shares of Common Stock pursuant to this
Article 7 shall be entitled to receive the appropriate number of rights, if any, and the certificates representing the shares of 

  
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Common Stock issued upon such conversion shall bear such legends, if any, in each case as may be provided by the terms of any shareholder rights agreement adopted by the Company, as any such
agreement may be amended from time to time. Notwithstanding the foregoing, if prior to any conversion such rights have separated from the Common Stock in accordance with the provisions of the applicable shareholder rights agreement, the Conversion
Rate shall be adjusted at the time of separation as if the Company had distributed, to all holders of the Common Stock, Distributed Property as described in Section 7.04(c) above, subject to readjustment in the event of the expiration,
termination or redemption of such rights. 
 Section 7.13 Company Determination Final 

Any determination that the Company or its Board of Directors must make pursuant to this Article 7 shall be conclusive if made in good faith and
in accordance with the provisions of this Article 7, absent manifest error, and set forth in a Board Resolution. 
 ARTICLE 8 

PURCHASE AT OPTION OF HOLDERS UPON A FUNDAMENTAL CHANGE 

Section 8.01 Purchase at Option of Holders upon a Fundamental Change 

(a) Generally. If a Fundamental Change occurs at any time prior to the Maturity Date of the Notes, then each Holder shall have the
right, at such Holder’s option to require the Company to purchase any or all of such Holder’s Notes, on a date specified by the Company that is no earlier than the 20th and not later than the 35th calendar day following the date of the
Fundamental Change Company Notice, subject to extension to comply with applicable law (the “Fundamental Change Purchase Date”), at a purchase price (the “Fundamental Change Purchase Price”) in cash equal to
(i) 100% of the Principal Amount thereof, plus (ii) accrued and unpaid interest thereon to, but excluding, the Fundamental Change Purchase Date (provided, however, that if the Fundamental Change Purchase Date occurs after a Regular Record
Date and on or prior to the Interest Payment Date to which it relates, the Company will pay accrued and unpaid interest to the Holder of record on such Regular Record Date) or, in the case of a Default by the Company in the payment of the
Fundamental Change Purchase Price with respect to such Notes, the day on which such Default is no longer continuing, plus (iii) an amount (the “Fundamental Change Make-Whole Payment”) equal to the aggregate amount of interest
payments that would have been payable on such repurchased Notes from the last day through which interest was paid on the Notes (or from the Issue Date if no interest has been paid on the Notes or from the next succeeding Interest Payment Date if
such conversion occurs after a Regular Record Date and on or before the next succeeding Interest Payment Date), through but not including the Maturity Date (determined as if such repurchase did not occur). 

Purchases of Notes under this Section 8.01 shall be made, at the option of the Holder thereof upon: 

(i) delivery to the Paying Agent of a duly completed notice (the “Fundamental Change Purchase Notice”) in the
form set forth on the reverse of the Notes on or prior to the Business Day immediately preceding the Fundamental Change Purchase Date, subject to extension to comply with applicable law, which must specify: 

(A) if the Notes are Physical Notes, the certificate numbers of the Holder’s Notes to be delivered for purchase; 

  
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 (B) the portion of the Principal Amount of the Holder’s Notes to be
purchased; and 
 (C) that the Holder’s Notes are to be purchased by the Company pursuant to the applicable provisions
of the Notes and this Indenture; and 
 (ii) delivery or book-entry transfer of the Notes to the Trustee (or other Paying
Agent appointed by the Company) (together with all necessary endorsements) at any time on or prior to the Business Day immediately preceding the Fundamental Change Purchase Date, subject to extension to comply with applicable law, at the applicable
Corporate Trust Office of the Trustee (or other Paying Agent appointed by the Company), such delivery being a condition to receipt by the Holder of the Fundamental Change Purchase Price therefor; provided that such Fundamental Change Purchase Price
shall be so paid pursuant to this Section 8.01 only if the Notes so delivered to the Trustee (or other Paying Agent appointed by the Company) shall conform in all respects to the description thereof in the related Fundamental Change Purchase
Notice; provided that, if such Holder’s Notes are not Physical Notes, such Holder must comply with the Applicable Procedures. 
 Any
purchase by the Company contemplated pursuant to the provisions of this Section 8.01 shall be consummated by the delivery of the Fundamental Change Purchase Price to be received by the Holder promptly following the later of the Fundamental
Change Purchase Date or the time of the book-entry transfer or delivery of the Notes. 
 Notwithstanding anything herein to the contrary,
any Holder delivering to the Trustee (or other Paying Agent appointed by the Company) the Fundamental Change Purchase Notice contemplated by this Section 8.01 shall have the right to withdraw such Fundamental Change Purchase Notice (in whole or
in part) at any time prior to the Close of Business on (i) the Business Day prior to the Fundamental Change Purchase Date or (ii) in the case of a Default by the Company in the payment of the Fundamental Change Purchase Price with respect
to such Notes, the Business Day immediately preceding the day on which such Default is no longer continuing, in either case, by delivery of a written notice of withdrawal to the Trustee (or other Paying Agent appointed by the Company) in accordance
with Section 8.03 below. 
 The Paying Agent shall promptly notify the Company of the receipt by it of any Fundamental Change Purchase
Notice or written notice of withdrawal thereof. 
 (b) Fundamental Change Company Notice. On or before the 20th day after the
occurrence of a Fundamental Change, the Company shall provide to all Holders of record of the Notes and the Trustee and Paying Agent a notice (the “Fundamental Change Company Notice”) of the occurrence of such Fundamental Change and
of the purchase right at the option of the Holders arising as a result thereof (a “Fundamental Change Offer”). With respect to Physical Notes, such delivery shall be by first class mail, and with respect to Global Notes, such
delivery shall be pursuant to the Applicable Procedures of the Depository. Simultaneously with 

  
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providing such Fundamental Change Company Notice, the Company shall publish such information on the Company’s website or through such other public medium as the Company may use at such time.

 Each Fundamental Change Company Notice shall state: 

(i) that the Fundamental Change Company Notice is being made pursuant to this Section 8.01 and that all Notes tendered
will be accepted for payment; 
 (ii) the events causing the Fundamental Change; 

(iii) the date of the Fundamental Change; 

(iv) the last date on which a Holder may exercise the purchase right or withdraw their election; 

(v) the Fundamental Change Purchase Price; 

(vi) the Fundamental Change Purchase Date; 

(vii) the name and address of the Paying Agent and the Conversion Agent, if applicable; 

(viii) if applicable, the Applicable Conversion Rate and any adjustments to the Applicable Conversion Rate; 

(ix) if applicable, that the Notes with respect to which a Fundamental Change Purchase Notice has been delivered by a Holder
may be converted only if the Holder withdraws the Fundamental Change Purchase Notice in accordance with Section 8.03; 

(x) that any Note not tendered will continue to accrue interest in accordance with the terms of this Indenture; 

(xi) the procedures that Holders must follow to require the Company to purchase their Notes, including that Holders electing to
have any Notes purchased will be required to surrender the Notes; and 
 (xii) that Holders whose Notes are being purchased
only in part will be issued new Notes equal in Principal Amount to the unpurchased portion of the Notes surrendered. 
 No failure of the
Company to give the foregoing notices and no defect therein shall limit any Holder’s rights or affect the validity of the proceedings for the purchase of the Notes pursuant to this Section 8.01. 

Notwithstanding anything to the contrary in this Section 8.01 the Company will not be required to make a Fundamental Change Offer upon a
Fundamental Change if a third party makes the Fundamental Change Offer in the manner, at the times and otherwise in compliance 

  
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with the requirements set forth in this Section 8.01 and purchases all Notes properly tendered and not withdrawn under the Fundamental Change Offer (it being understood that such third-party
may make a Fundamental Change Offer that is conditioned upon and prior to the occurrence of a Fundamental Change). 
 Notwithstanding
anything to the contrary contained herein, a Fundamental Change Offer may be made in advance of a Fundamental Change, conditioned upon the consummation of such Fundamental Change, if a definitive agreement is in place for the Fundamental Change at
the time the Fundamental Change Offer is made. 
 (c) No Payment During an Acceleration. Notwithstanding the foregoing, no Notes may
be purchased by the Company at the option of the Holders pursuant to this Section 8.01 if the Principal Amount of the Notes has been accelerated, and such acceleration has not been rescinded, on or prior to the Fundamental Change Purchase Date
(except in the case of an acceleration resulting from a Default by the Company in the payment of the Fundamental Change Purchase Price with respect to such Notes). 

(d) Payment of Fundamental Change Purchase Price. The Notes to be purchased pursuant to this Section 8.01, as well as the
Fundamental Change Make-Whole Payment, shall be paid for in cash. 
 Section 8.02 Effect of Fundamental Change Purchase Notice

 Upon receipt by the Paying Agent of the Fundamental Change Purchase Notice specified in Section 8.01(a), the Holder of the Note in
respect of which such Fundamental Change Purchase Notice was given shall (unless such Fundamental Change Purchase Notice is withdrawn as specified in Section 8.03) thereafter be entitled to receive solely the Fundamental Change Purchase Price
with respect to such Note. Such Fundamental Change Purchase Price shall be payable to such Holder promptly following the later of (a) the Fundamental Change Purchase Date with respect to such Note (provided the conditions in
Section 8.01(a) have been satisfied) and (b) the time of delivery or book-entry transfer of such Note to the Paying Agent by the Holder thereof in the manner required by Section 8.01(a). 

Section 8.03 Withdrawal of Fundamental Change Purchase Notice 

(a) A Fundamental Change Purchase Notice may be withdrawn (in whole or in part) by means of a written notice of withdrawal delivered to the
Paying Agent in accordance with the Fundamental Change Company Notice prior to the Close of Business on (i) the Business Day immediately preceding the relevant Fundamental Change Purchase Date or (ii) in the case of a Default by the
Company in the payment of the Fundamental Change Purchase Price with respect to such Notes, the Business Day immediately preceding the day on which such Default is no longer continuing, specifying: 

(A) the Principal Amount of the withdrawn Notes; 

(B) if the Notes are Physical Notes, the certificate numbers of the withdrawn Notes; and 

  
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 (C) the Principal Amount, if any, of such Notes that remains subject to the original Fundamental
Change Purchase Notice; 
 provided that, if such Holder’s Notes are not Physical Notes, such Holder must comply with the Applicable Procedures. 

Section 8.04 Deposit of Fundamental Change Purchase Price 

Prior to 11:00 a.m. (local time in The City of New York) on the Fundamental Change Purchase Date, the Company shall deposit with the Paying
Agent (or, if the Company or a Subsidiary or an Affiliate of either of them is acting as the Paying Agent, shall segregate and hold in trust as provided herein) an amount of money (in immediately available funds if deposited on such Business Day)
sufficient to pay the Fundamental Change Purchase Price, of all the Notes or portions thereof properly tendered pursuant to the Fundamental Change Purchase Notice that are to be purchased as of the Fundamental Change Purchase Date. The Company shall
promptly notify the Trustee in writing of the amount of any deposits of cash made pursuant to this Section 8.04. If the Paying Agent holds money sufficient to pay the Fundamental Change Purchase Price of any Note surrendered for purchase and
not withdrawn in accordance with this Indenture as of the Close of Business on the Fundamental Change Purchase Date, then immediately following the Close of Business on the Fundamental Change Purchase Date, (a) any such Note will cease to be
outstanding and interest will cease to accrue thereon on the Fundamental Change Purchase Date (whether or not book-entry transfer of the Notes is made or whether or not the Notes are delivered to the Paying Agent) and (b) all other rights of
the Holder in respect thereof will terminate (other than the right to receive the Fundamental Change Purchase Price and previously accrued and unpaid interest (including Additional Interest, if any) upon delivery or book-entry transfer of such
Note). 
 Section 8.05 Notes Purchased in Whole or in Part 

Any Note that is to be purchased, whether in whole or in part, shall be surrendered at the office of the Paying Agent (with, if the Company or
the Trustee so requires, due endorsement by, or a written instrument of transfer in form satisfactory to the Company and the Trustee duly executed by, the Holder thereof or such Holder’s attorney duly authorized in writing) and the Company
shall execute and the Trustee shall authenticate and deliver to the Holder of such Note, without service charge, a new Note or Notes equal in principal amount to any unpurchased portion of the Note or Notes surrendered. 

Section 8.06 Covenant to Comply With Securities Laws upon Purchase of Notes 

In connection with any offer to purchase Notes under Section 8.01, the Company shall, if required: 

(a) comply with the provisions of Rule 13e-4, Rule 14e-1 and any other of the tender offer rules under the Exchange Act that may then be
applicable; 
 (b) file a Schedule TO or any other required schedule under the Exchange Act; and 

  
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 (c) otherwise comply with all federal and state securities laws in connection with any offer by
the Company to purchase the Notes. 
 Section 8.07 Repayment to the Company 

Subject to the requirements of any applicable abandoned property laws, regardless of who acts as Paying Agent, the Paying Agent shall return to
the Company any cash that remains unclaimed, together with interest, if any, thereon, held by them for the payment of the Fundamental Change Purchase Price; provided that to the extent that the aggregate amount of cash deposited by the Company
pursuant to Section 8.04 exceeds the aggregate Fundamental Change Purchase Price of the Notes or portions thereof which the Company is obligated to purchase as of the Fundamental Change Purchase Date, then as soon as practicable following the
Fundamental Change Purchase Date, the Paying Agent shall return any such excess to the Company. 
 Section 8.08 [Reserved] 

ARTICLE 9 
 EVENTS OF
DEFAULT; REMEDIES 
 Section 9.01 Events of Default 

“Event of Default,” wherever used herein, means any one of the following events (whatever the reason for such Event of
Default and whether it shall be voluntary or involuntary or be effected by operation of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or governmental body): 

(a) failure by the Company to pay any interest on any Notes when due and payable and such failure continues for a period of thirty
(30) days; 
 (b) failure by the Company to pay the Principal Amount of any Note when due and payable on the Maturity Date, upon
required purchase in connection with a Fundamental Change, upon required purchase or redemption in accordance with Section 3.14 hereof, upon declaration of acceleration or otherwise; 

(c) failure by the Company to comply with its obligation to convert the Notes in accordance with this Indenture (including, without
limitation, payment of any associated Make-Whole Payment) upon exercise of a Holder’s conversion right, and such failure continues for a period of five (5) Business Days; 

(d) failure by the Company to provide the Fundamental Change Company Notice to Holders required pursuant to Section 8.01(b) hereof when
due, and such failure continues for five (5) Business Days; 
 (e) [Reserved]; 

(f) other than Defaults under clause (g)(iii) below, failure by any Credit Party in the performance of any other obligation, covenant or
agreement of any Credit Party under the Notes, 

  
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this Indenture, the Purchase Agreement, the Security Documents or the other Indenture Documents that continues for a period of sixty (60) days after receipt by any Credit Party of a Notice
of Default; 
 (g) (i) default by any Credit Party with respect to any Indebtedness for borrowed money of any Credit Party in excess of
$1,000,000 in the aggregate, whether such Indebtedness now exists or shall hereafter be created, which default results (A) in such Indebtedness being accelerated or otherwise becoming or being declared due and payable prior to its stated
maturity or (B) from the failure to make any payment when due under such Indebtedness, whether upon maturity, required purchase, acceleration, regularly scheduled payment date or otherwise (after giving effect to any applicable grace period)
which results in the right of the holders of such Indebtedness to accelerate the maturity of such Indebtedness; provided, however, that any such Event of Default shall be deemed cured and not continuing upon payment of such Indebtedness or
rescission of such declaration of acceleration, (ii) any event or circumstances occurs and is continuing which constitutes an Event of Default (as defined in the Credit Agreement) under the Credit Agreement if the effect of such event or
condition is to accelerate or to permit the acceleration of, the maturity of such Indebtedness, (iii) any breach or violation of the Purchase Agreement or Registration Rights Agreement or (iv) any event or circumstances occurs and is
continuing which constitutes an event of default under the TriplePoint Loan Documents if the effect of such event or condition is to accelerate or to permit the acceleration of, the maturity of such Indebtedness under the TriplePoint Loan Documents;

 (h) a final judgment for the payment of $1,000,000 or more (to the extent not adequately covered by insurance as to which a solvent and
unaffiliated insurance company has acknowledged coverage) rendered against the any Credit Party by a court of competent jurisdiction, which judgment is not discharged, stayed, vacated, paid or otherwise satisfied within sixty (60) days after
(i) the date on which the right to appeal thereof has expired if no such appeal has commenced, or (ii) the date on which all rights to appeal have been extinguished; 

(i) the entry by a court having jurisdiction in the premises of (i) a decree or order for relief in respect of any Credit Party of a
voluntary case or proceeding under any applicable federal, state or foreign bankruptcy, insolvency, reorganization or other similar law, (ii) a decree or order adjudging any Credit Party as bankrupt or insolvent, or approving as properly filed
a petition seeking reorganization, arrangement, adjustment or composition of or in respect of any Credit Party under any applicable federal, state or foreign law or (iii) appointing a custodian, receiver, liquidator, assignee, trustee,
sequestrator or other similar official of any Credit Party of 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 for relief or any such other decree or
order unstayed and in effect for a period of sixty (60) consecutive days; 
 (j) the commencement by any Credit Party of a voluntary
case or proceeding under any applicable federal, state or foreign bankruptcy, insolvency, reorganization or other similar law or of any other case or proceeding to be adjudicated a bankrupt or insolvent, or the consent by it to the entry of a decree
or order for relief in respect of any Credit Party in an involuntary case or proceeding under any applicable federal, state or foreign bankruptcy, insolvency, reorganization or other similar law or to the commencement of any bankruptcy or insolvency
case or proceeding against it, or the filing by it of a petition or answer or consent seeking 

  
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reorganization or relief under any applicable federal, state or foreign law, or the consent by it to the filing of such petition or to the appointment of or taking possession by a custodian,
receiver, liquidator, assignee, trustee, sequestrator or other similar official of any Credit Party or of any substantial part of such entity’s property, or the making by it of an assignment for the benefit of creditors, or the admission by it
in writing of its inability to pay its debts generally as they become due, or the taking of corporate action by any Credit Party in furtherance of any such action; and 

(k) (i) any Subsidiary Guarantee shall be held in any judicial proceeding to be unenforceable or invalid or shall cease for any reason to be
in full force and effect or (ii) any Guarantor, or any person acting on behalf of any Guarantor, shall deny or disaffirm its obligations under its Subsidiary Guarantee, except, in each case of (i) and (ii), by reason of the termination of
this Indenture, a transaction permitted by this Indenture, or the release of such Subsidiary Guarantee in accordance with this Indenture; 

(l) any Security Documents at any time and for any reason cease to create the Lien on the property and assets purported to be subject to such
agreement in accordance with the terms of such agreement, or cease to be in full force and effect, or shall be contested by the any Credit Party or any Subsidiary of any Credit Party, except in each case as a result of a release of Collateral in a
transaction permitted under this Indenture or as a result of any action or failure to act on the part of the Trustee or Collateral Trustee when the Trustee or Collateral Trustee was expressly required to so act under the Indenture Documents; and

 (m) the earlier to occur of (i) the occurrence of any event, circumstance or transaction that would entitle the holders of the 2013
Warrants to any cash payment from the Company (or otherwise require the Company to make an offer make a cash payment to such holders) under the 2013 Warrants other than in lieu of the issuance of fractional shares or (ii) the making of a cash
payment (or any offer to make such payment) under the 2013 Warrants (other than in lieu of the issuance of fractional shares ) provided that in each case, no Event of Default will be triggered if the Requisite Holders approve the transaction that
triggers the obligation to make a cash payment on account of the 2013 Warrants. 
 The Trustee shall not be charged with knowledge of any
Event of Default, except as provided in Section 11.03(i). 
 Section 9.02 Acceleration of Maturity: Waiver of Past Defaults and
Rescission 
 (a) If an Event of Default (other than those specified in Sections 9.01(i) and 9.01(j) involving any Credit Party) occurs
and is continuing, then and in every such case the Requisite Holders may, or the Trustee, at the written request of the Requisite Holders, shall, declare 100% of the Principal Amount plus accrued and unpaid interest on all the outstanding Notes
(including but not limited to any outstanding accrued but not yet capitalized PIK Interest and all outstanding capitalized PIK Interest) and any outstanding Make-Whole Payment (and all other Obligations), to be due and payable immediately, by a
notice in writing to the Company (and to the Trustee if given by such Holders), and upon any such declaration such Principal Amount plus accrued and unpaid interest (and all other Obligations) shall become immediately due and payable. 

  
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 Notwithstanding the foregoing, in the case of an Event of Default specified in
Section 9.01(i) or Section 9.01(j) with respect to any Credit Party, 100% of the Principal Amount plus accrued and unpaid interest on all outstanding Notes (including but not limited to any outstanding accrued but not yet capitalized PIK
Interest and all outstanding capitalized PIK Interest) and any outstanding Make-Whole Payment (and all other Obligations), will automatically become due and payable without any declaration or other act on the part of the Trustee or any Holder. 

(b) The Requisite Holders, by written notice to the Company and the Trustee, may (x) waive any past Default and its consequences and
(y) at any time after a declaration of acceleration has been made and before a judgment or decree for payment of the money due has been obtained by the Trustee as hereinafter in this Article 9 provided, rescind any such acceleration with
respect to the Notes and its consequences, except, in each case, with respect to a Default described in Section 9.01(a), Section 9.01(b) or Section 9.01(c) (which, in each case shall require the approval of each Holder directly
affected by such Default), or in respect of a covenant or provision hereof which under Article 14 cannot be modified or amended without the consent of the Holder of each outstanding Note affected, if: 

(i) such rescission will not conflict with any judgment or decree of a court of competent jurisdiction; and 

(ii) all existing Events of Default (other than the non-payment of any Principal Amount or interest or any other Obligation
that became due solely by such declaration of acceleration) have been cured or waived. 
 Upon any such waiver, the Default which has been
waived shall cease to exist and any Event of Default arising therefrom shall be deemed to have been cured, for every other purpose of the Indenture; but no such waiver shall extend to any subsequent or other Default or impair any right consequent.

 No such rescission shall affect any subsequent default or impair any right consequent thereon. 

Section 9.03 Additional Interest 

If an Event of Default occurs and is continuing, if so elected by the Requisite Holders, in addition to ordinary interest payable pursuant to
Section 4.01, the Company shall pay Additional Interest on the Notes, which shall accrue at the rate of 2.0% per annum of the Principal Amount of Notes outstanding for each day during the period from and including the date on which such
Event of Default first occurs to and including the date on which such Event of Default has been cured or waived or ceases to exist. Additional Interest shall also mean all amounts, if any, payable pursuant to the Registration Rights Agreement. Any
Additional Interest payable pursuant to this Section 9.03 will be payable in arrears on each Interest Payment Date following accrual in the same manner as ordinary interest is payable pursuant to Section 4.01. Notwithstanding the
foregoing, the accrual and/or payment of such Additional Interest shall not 

  
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preclude, forebear, waive or delay the rights of the Holders hereunder to accelerate the Notes as provided in Section 9.02 or to elect or exercise any other remedies available to them
hereunder or under applicable law. 
 Section 9.04 Collection of Indebtedness and Suits for Enforcement by Trustee 

The Company covenants that if a Default is made in the payment of the Principal Amount plus accrued and unpaid interest on the Maturity Date
therefor or in the payment of the Fundamental Change Purchase Price and any Make-Whole Payment which is then due and payable in respect of any Note, the Company will, upon demand of the Trustee, pay to it, for the benefit of the Holders of such
Notes, the whole amount then due and payable on such Notes, and, in addition thereto, such further amount as shall be sufficient to cover the costs and expenses of collection, including the reasonable compensation, expenses, disbursements and
advances of the Trustee, its agents and counsel. 
 If an Event of Default occurs and is continuing, the Trustee, with the consent of the
Requisite Holders, may, but shall not be obligated to, pursue any available remedy, including but not limited to an Enforcement Action as contemplated under Article 5 hereof, to collect the payment of the Principal Amount plus accrued but unpaid
interest on the Notes (including but not limited to any outstanding accrued but not yet capitalized PIK Interest and all outstanding capitalized PIK Interest) and any outstanding Make-Whole Payment, or to enforce the performance of any provision of
the Notes or this Indenture. The Trustee may maintain a proceeding even if the Trustee does not possess any of the Notes or does not produce any of the Notes in the proceeding. A delay or omission by the Trustee or any Holder in exercising any right
or remedy accruing upon an Event of Default shall not impair the right or remedy or constitute a waiver of, or acquiescence in, the Event of Default. No remedy is exclusive of any other remedy. All available remedies are cumulative. 

Section 9.05 Trustee May File Proofs of Claim 

In case of any judicial proceeding relative to the Company (or any other obligor upon the Notes), its property or its creditors, the Trustee
shall be entitled and empowered, by intervention in such proceeding or otherwise, to take any and all actions authorized under this Indenture and applicable law in order to have claims of the Holders and the Trustee allowed in any such proceeding.
In particular, the Trustee shall be authorized to collect and receive any moneys or other property payable or deliverable on any such claims and to distribute the same; and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
other similar official in any such judicial proceeding is hereby authorized by each Holder to make such payments to the Trustee and, in the event that the Trustee shall consent to the making of such payments directly to the Holders, to pay to the
Trustee any amount due it for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel and any other amounts due the Trustee under Section 11.07. 

No provision of this Indenture shall be deemed to authorize the Trustee to authorize or consent to or accept or adopt on behalf of any Holder
any plan of reorganization, arrangement, adjustment or composition affecting the Notes or the rights of any Holder thereof or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding. 

  
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 Section 9.06 Application of Money Collected 

Subject to the Intercreditor Agreement, any money collected by the Trustee pursuant to this Article or the Collateral Trustee pursuant to the
Security Documents shall be applied in the following order, at the date or dates fixed by the Trustee and, in case of the distribution of such money to Holders, upon presentation of the Notes and the notation thereon of the payment if only partially
paid and upon surrender thereof if fully paid: 
 FIRST: To the payment of all amounts due the Trustee and the Collateral Trustee under
Section 11.07; 
 SECOND: To the payment of the amounts then due and unpaid on the Notes for the Principal Amount, Fundamental Change
Purchase Price, interest (including but not limited to any outstanding accrued but not yet capitalized PIK Interest and all outstanding capitalized PIK Interest) and any outstanding Make-Whole Payment and other Obligations, as the case may be, in
respect of which or for the benefit of which such money has been collected, ratably, without preference or priority of any kind, according to the amounts due and payable on such Notes; and 

THIRD: To the payment of the remainder, if any, to the Company or any other Person lawfully entitled thereto. 

Section 9.07 Limitation on Suits 

No Holder of any Note shall have any right to institute any proceeding, judicial or otherwise, with respect to this Indenture, the Notes, the
Subsidiary Guarantees or for the appointment of a receiver or trustee, or for any other remedy hereunder unless (a) an Event of Default specified in Section 9.01(a), Section 9.01(b) or Section 9.01(c) occurs which directly
affects such Holder or (b) the Requisite Holders shall have made written request to the Trustee or the Collateral Trustee to institute a proceeding in its own name as Trustee or Collateral Trustee hereunder and offered to the Trustee or
Collateral Trustee, as applicable, security or indemnity satisfactory to it against any loss, liability or expense and the Trustee or the Collateral Trustee, as applicable, for seven (7) days after its receipt of such request and offer of
security or indemnity has failed to institute any such proceeding. In the case of (a) in the immediately preceding sentence, Holders shall be entitled to, but shall not be obligated to pursue, any right or remedy that would otherwise be
available to the Trustee or the Collateral Trustee under this Indenture. In the case of (b) in the immediately preceding sentence, the Requisite Holders shall be entitled to, but shall not be obligated to pursue, any right or remedy that would
otherwise be available to the Trustee or the Collateral Trustee under this Indenture. Notwithstanding the forgoing, no one or more Holders shall have any right in any manner whatever by virtue of, or by availing itself of, any provision of this
Indenture to affect, disturb or prejudice the rights of any other Holders, or to obtain or to seek to obtain priority or preference over any other Holders or to enforce any right under this Indenture, except in the manner herein provided and for the
equal and ratable benefit of all the Holders (it being understood that neither the Trustee nor the Collateral Trustee has an affirmative duty to ascertain whether or not such actions or forbearances are unduly prejudicial to such Holders). 

  
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 Section 9.08 Unconditional Right of Holders to Receive Payment 

Notwithstanding any other provision of this Indenture, the right of any Holder to receive payment of the Principal Amount (including the
Fundamental Change Purchase Price or interest in respect of the Notes held by such Holder, on or after the respective due dates expressed in the Notes, or any Fundamental Change Purchase Date, any other Obligation or otherwise, as applicable), any
accrued and unpaid interest (including Additional Interest, if any) and to convert the Notes in accordance with Article 7, or to bring suit for the enforcement of any such payment on or after such respective dates or the right to convert, shall not
be impaired or affected without the consent of such Holder. 
 Section 9.09 Restoration of Rights and Remedies 

If the Trustee or any Holder has instituted any proceeding to enforce any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to the Trustee or to such Holder, then and in every such case, subject to any determination in such proceeding, the Company, the Trustee and the Holders shall be restored
severally and respectively to their former positions hereunder and thereafter all rights and remedies of the Trustee and the Holders shall continue as though no such proceeding had been instituted. 

Section 9.10 Rights and Remedies Cumulative 

Except as otherwise provided with respect to the replacement or payment of mutilated, destroyed, lost or stolen Notes in the last paragraph of
Section 3.09, no right or remedy herein conferred upon or reserved to the Trustee or to the Holders is intended to be exclusive of any other right or remedy, and every right and remedy shall, to the extent permitted by law, be cumulative and in
addition to every other right and remedy given hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder shall not prevent the concurrent assertion or employment of any
other appropriate right or remedy. 
 Section 9.11 Delay or Omission Not Waiver 

No delay or omission of the Trustee or of any Holder of any Note to exercise any right or remedy accruing upon any Event of Default shall
impair any such right or remedy or constitute a waiver of any such Event of Default or an acquiescence therein. Every right and remedy given by this Article or by law to the Trustee or to the Holders may be exercised from time to time, and as often
as may be deemed expedient, by the Trustee or by the Holders, as the case may be. 
 Section 9.12 Control by Holders 

The Requisite Holders may direct the time, method and place of conducting any proceeding for any remedy available to the Trustee or Collateral
Trustee or of exercising any trust or power conferred on the Trustee. However, the Trustee may refuse to follow any direction that conflicts with applicable law or this Indenture or that the Trustee determines is unduly prejudicial to the rights of
any other Holder or that would involve the Trustee in personal liability. Prior to taking any action under this Indenture, the Trustee will be entitled to indemnification from the Holders satisfactory to it in its sole discretion against all losses
and expenses caused by taking or not taking such action. 

  
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 Section 9.13 Undertaking for Costs 

In any suit for the enforcement of any right or remedy under this Indenture or in any suit against the Trustee for any action taken or omitted
by it as Trustee, in either case in respect of the Notes, a court may require any party litigant in such suit to file an undertaking to pay the costs of the suit, and the court may assess reasonable costs, including reasonable attorney’s fees
and expenses, against any party litigant in the suit having due regard to the merits and good faith of the claims or defenses made by the party litigant; but the provisions of this Section 9.13 shall not apply to any suit instituted by the
Company, to any suit instituted by the Trustee, to any suit instituted by any Holder, or group of Holders, holding in the aggregate more than 10% in Principal Amount of the outstanding Notes, or to any suit instituted by any Holder for the
enforcement of the payment of the Principal Amount on any Note on or after the Maturity Date of such Note or the Fundamental Change Purchase Date. 

Section 9.14 [Reserved] 

Section 9.15 [Reserved] 

ARTICLE 10 
 RESERVED

 ARTICLE 11 
 THE
TRUSTEE 
 Section 11.01 Duties and Responsibilities of Trustee 

(a) The Trustee, prior to the occurrence of an Event of Default and after the curing of all Events of Default which may have occurred,
undertakes to perform such duties and only such duties as are specifically set forth in this Indenture. In case an Event of Default has occurred (which has not been cured or waived), the Trustee shall exercise such of the rights and powers vested in
it by this Indenture, and use the same degree of care and skill in their exercise, as a prudent person would exercise or use under the circumstances in the conduct of his own affairs. 

(b) No provision of this Indenture shall be construed to relieve the Trustee from liability for its own negligent action, its own negligent
failure to act or its own willful misconduct, except that: 
 (i) prior to the occurrence of an Event of Default and after
the curing or waiving of all Events of Default which may have occurred: 
 (A) the duties and obligations of the Trustee
shall be determined solely by the express provisions of this Indenture and applicable law, and the Trustee shall not be liable except for the performance of such duties and obligations as are specifically set forth in this Indenture and no implied
covenants or obligations shall be read into this Indenture against the Trustee; and 

  
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 (B) in the absence of bad faith or willful misconduct on the part of the Trustee,
the Trustee may conclusively rely as to the truth of the statements and the correctness of the opinions expressed therein, upon any certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture; but, in the
case of any such certificates or opinions which by any provisions hereof are specifically required to be furnished to the Trustee, the Trustee shall be under a duty to examine the same to determine whether or not they conform to the requirements of
this Indenture (but need not confirm or investigate the accuracy of any mathematical calculations or other facts stated therein); 

(ii) the Trustee shall not be liable for any error of judgment made in good faith by a Trust Officer or Officers of the
Trustee, unless the Trustee was negligent in ascertaining the pertinent facts; 
 (iii) the Trustee shall not be liable with
respect to any action taken or omitted to be taken by it in good faith in accordance with the written direction of the Requisite Holders at the time outstanding determined as provided in Section 1.04 relating to the time, method and place of
conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred upon the Trustee, under this Indenture; 

(iv) whether or not therein provided, every provision of this Indenture relating to the conduct or affecting the liability of,
or affording protection to, the Trustee shall be subject to the provisions of this Section; 
 (v) the Trustee shall not be
liable in respect of any payment (as to the correctness of amount, entitlement to receive or any other matters relating to payment) or notice effected by the Company or any Paying Agent or any records maintained by any co-Registrar with respect to
the Notes; and 
 (c) If any party fails to deliver a notice relating to an event the fact of which, pursuant to this Indenture, requires
notice to be sent to the Trustee, the Trustee may conclusively rely on its failure to receive such notice as reason to act as if no such event occurred. 

None of the provisions contained in this Indenture shall require the Trustee to expend or risk its own funds or otherwise incur personal
financial liability in the performance of any of its duties or in the exercise of any of its rights or powers, if there is reasonable ground for believing that the repayment of such funds or adequate indemnity against such risk or liability is not
reasonably assured to it. 
 Section 11.02 Notice of Defaults 

The Trustee shall give the Holders notice of any Default of which the Trustee has knowledge (as provided in Section 11.03(i)) within
ninety (90) days after the occurrence thereof so long as such Default is continuing; provided, that (except in the case of any Default in the 

  
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payment of Principal Amount of, or interest on, any of the Notes or Fundamental Change Purchase Price or a default in the delivery of the consideration due upon conversion), the Trustee shall be
protected in withholding such notice if and so long as a committee of officers of the Trustee in good faith determines that the withholding of such notice is in the interest of the Holders of Notes. 

Section 11.03 Reliance on Documents, Opinions, Etc. 

Except as otherwise provided in Section 11.01: 

(a) the Trustee may rely and shall be protected in acting upon any resolution, certificate, statement, instrument, opinion, report, notice,
request, consent, order, bond, debenture, note, coupon or other paper or document (whether in its original or facsimile form) believed by it in good faith to be genuine and to have been signed or presented by the proper party or parties; 

(b) to the extent requested by the Trustee, any request, direction, order or demand of the Company mentioned herein shall be sufficiently
evidenced by an Officers’ Certificate (unless other evidence in respect thereof be herein specifically prescribed); and any resolution of the Company’s Board of Directors may be evidenced to the Trustee by a copy thereof certified by the
Secretary, any Assistant Secretary or the General Counsel of the Company; 
 (c) the Trustee may consult with counsel of its own selection
and any advice or Opinion of Counsel shall be full and complete authorization and protection in respect of any action taken or omitted by it hereunder in good faith and in accordance with such advice or Opinion of Counsel; 

(d) the Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request, order or
direction of any of the Holders pursuant to the provisions of this Indenture (including upon the occurrence and during the continuance of an Event of Default), unless such Holders shall have offered to the Trustee security or indemnity satisfactory
to it against any loss, expenses and liabilities which may be incurred therein or thereby; 
 (e) the Trustee shall not be bound to make any
investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture or other paper or document, but the Trustee, in its discretion, may
make such further inquiry or investigation into such facts or matters as it may see fit, and, if the Trustee shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records and premises of the
Company, personally or by agent or attorney (at the reasonable expense of the Company and shall incur no liability of any kind by reason of such inquiry or investigation); 

(f) the Trustee may execute any of the trusts or powers hereunder or perform any duties hereunder either directly or by or through agents or
attorneys and the Trustee shall not be responsible for any misconduct or negligence on the part of any agent or attorney appointed by it with due care hereunder; 

  
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 (g) the Trustee shall not be liable for any action taken, suffered, or omitted to be taken by it
and believed by it to be authorized or within the discretion or rights or powers conferred upon it by this Indenture, in each case without negligence, willful misconduct or bad faith on the part of the Trustee, unless it is proved in a court of
competent jurisdiction that the Trustee was negligent in ascertaining the pertinent facts; 
 (h) in no event shall the Trustee be
responsible or liable for special, indirect, or consequential loss or damage of any kind whatsoever (including, but not limited to, loss of profit) irrespective of whether the Trustee has been advised of the likelihood of such loss or damage and
regardless of the form of action; 
 (i) the Trustee shall not be deemed to have notice of any Default or Event of Default unless a Trust
Officer of the Trustee has actual knowledge thereof or unless written notice of any event which is in fact such a default is received by the Trustee at the Corporate Trust Office of the Trustee from any Holder or any Credit Party, and such notice
references the Notes and the Indenture (and in the absence of such actual knowledge or such notice, the Trustee may conclusively assume that no such Default or Event of Default exists); and 

(j) the rights, privileges, protections, immunities and benefits given to the Trustee, including, without limitation, its right to be
indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, and each agent, custodian and other Person employed to act hereunder. 

Section 11.04 No Responsibility for Recitals, Etc. 

The recitals contained herein and in the Notes (except in the Trustee’s certificate of authentication) shall be taken as the statements of
the Company, and the Trustee assumes no responsibility for the correctness of the same. The Trustee makes no representations as to the validity or sufficiency of this Indenture, the Notes, any of the Security Documents, the Intercreditor Agreement,
the Subordination Agreement, any Officers’ Certificate, or any Opinion of Counsel. The Trustee shall not be accountable for the use or application by the Company of any Notes or the proceeds of any Notes authenticated and delivered by the
Trustee in conformity with the provisions of this Indenture. 
 Section 11.05 Trustee, Paying Agents, Conversion Agents or Registrar
May Own Notes 
 The Trustee, any Paying Agent, any Conversion Agent or Registrar, in its individual or any other capacity, may become
the owner or pledgee of Notes with the same rights it would have if it were not Trustee, Paying Agent, Conversion Agent or Registrar. 

Section 11.06 Monies to be Held in Trust 

Subject to the provisions of Section 13.04, all monies and properties received by the Trustee shall, until used or applied as herein
provided, be held in trust for the purposes for which they were received. Money held by the Trustee in trust hereunder need not be segregated from other funds except to the extent required by law. The Trustee shall be under no liability for interest
on any money received by it hereunder except as may be agreed in writing from time to time by the Company and the Trustee. 

  
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 Section 11.07 Compensation and Expenses of Trustee 

The Company covenants and agrees to pay to the Trustee from time to time, and the Trustee shall be entitled to, reasonable compensation for all
services rendered by it hereunder in any capacity (which shall not be limited by any provision of law in regard to the compensation of a trustee of an express trust) as mutually agreed to from time to time in writing between the Company and the
Trustee, and the Company will pay or reimburse the Trustee upon its request for all reasonable expenses, disbursements and advances reasonably incurred or made by the Trustee in accordance with any of the provisions of this Indenture (including the
reasonable compensation and the expenses and disbursements of its counsel and of all Persons not regularly in its employ) except any such expense, disbursement or advance as may arise from its gross negligence, willful misconduct or bad faith. The
Company also covenants to indemnify the Trustee (or any officer, director or employee of the Trustee), in any capacity under this Indenture and its agents and any authenticating agent for, and to hold them harmless against, any and all loss,
liability, claim or expense incurred without gross negligence, willful misconduct or bad faith on the part of the Trustee or such officers, directors, employees and agent or authenticating agent, as the case may be, and arising out of or in
connection with the acceptance or administration of this trust or in any other capacity hereunder, including the costs and expenses of defending themselves against any claim of liability in the premises, including reasonable fees and expenses of
legal counsel limited to one firm and, to the extent so required, one local counsel in each applicable jurisdiction. The obligations of the Company under this Section 11.07 to compensate or indemnify the Trustee and to pay or reimburse the
Trustee for expenses, disbursements and advances shall be secured by a lien prior to that of the Notes upon all property and funds held or collected by the Trustee as such, except funds held in trust for the benefit of the Holders of particular
Notes. The obligation of the Company under this Section shall survive the satisfaction and discharge of this Indenture. 
 When the Trustee
and its agents and any authenticating agent incur expenses or render services after an Event of Default specified in Section 9.01(i) or Section 9.01(j) with respect to the Company occurs, the expenses and the compensation for the services
are intended to constitute expenses of administration under any bankruptcy, insolvency or similar laws. 
 The Trustee shall comply with the
provisions of Trust Indenture Act § 313(b)(2) to the extent applicable. 
 Section 11.08 Officers’ Certificate as
Evidence 
 Except as otherwise provided in Section 11.01, whenever in the administration of the provisions of this Indenture the
Trustee shall deem it necessary or desirable that a matter be proved or established prior to taking or omitting any action hereunder, such matter (unless other evidence in respect thereof be herein specifically prescribed) may, in the absence of
negligence or willful misconduct on the part of the Trustee, be deemed to be conclusively proved and established by an Officers’ Certificate delivered to the Trustee. 

  
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 Section 11.09 Conflicting Interests of Trustee 

If the Trustee has or shall acquire a conflicting interest within the meaning of the Trust Indenture Act, the Trustee shall either eliminate
such interest within ninety (90) days or resign, to the extent and in the manner provided by, and subject to the provisions of, this Indenture. 

Section 11.10 Eligibility of Trustee 

There shall at all times be a Trustee hereunder which shall be a Person that is eligible pursuant to the Trust Indenture Act to act as such and
has a combined capital and surplus of at least $50,000,000 (or if such Person is a member of a bank holding company system, its bank holding company shall have a combined capital and surplus of at least $50,000,000). If such Person publishes reports
of condition at least annually, pursuant to law or to the requirements of any supervising or examining authority, then for the purposes of this Section the combined capital and surplus of such Person shall be deemed to be its combined capital and
surplus as set forth in its most recent report of condition so published. If at any time the Trustee shall cease to be eligible in accordance with the provisions of this Section 11.10, it shall resign immediately in the manner and with the
effect hereinafter specified in this Article. 
 This Indenture shall always have a Trustee who satisfies the requirements of Trust
Indenture Act § 310(a)(1), (2) and (5). The Trustee is subject to Trust Indenture Act § 310(b). 
 Section 11.11
Resignation or Removal of Trustee 
 (a) The Trustee may at any time resign by giving written notice of such resignation to the
Company and to the Holders of Notes. Upon receiving such notice of resignation, the Company shall promptly appoint a successor trustee by written instrument, in duplicate, executed by order of the Company’s Board of Directors, one copy of which
instrument shall be delivered to the resigning Trustee and one copy to the successor trustee. If no successor trustee shall have been so appointed and have accepted appointment sixty (60) days after the mailing of such notice of resignation to
the Holders, the resigning Trustee may, upon ten (10) Business Days’ notice to the Company and the Holders, appoint a successor identified in such notice or may petition, at the expense of the Company, any court of competent jurisdiction
for the appointment of a successor trustee, or, if any Holder who has been a bona fide Holder of a Note or Notes for at least six (6) months may, subject to the provisions of Section 9.13, on behalf of himself and all others similarly
situated, petition any such court for the appointment of a successor trustee. Such court may thereupon, after such notice, if any, as it may deem proper and prescribe, appoint a successor trustee. 

(b) In case at any time any of the following shall occur: 

(i) the Trustee shall fail to comply with Section 11.09 after written request therefor by the Company or by any Holder who
has been a bona fide Holder of a Note or Notes for at least six (6) months; or 
 (ii) the Trustee shall cease to be
eligible in accordance with the provisions of Section 11.10 and shall fail to resign after written request therefor by the Company or by any such Holder; or 

  
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 (iii) the Trustee shall become incapable of acting, or shall be adjudged a
bankrupt or insolvent, or a receiver of the Trustee or of its property shall be appointed, or any public officer shall take charge or control of the Trustee or of its property or affairs for the purpose of rehabilitation, conservation or
liquidation; 
 then, in any such case, the Company may remove the Trustee and appoint a successor trustee by written instrument, in duplicate, executed by
order of the Company’s Board of Directors, one copy of which instrument shall be delivered to the Trustee so removed and one copy to the successor trustee, or, subject to the provisions of Section 9.13, any Holder who has been a bona fide
Holder of a Note or Notes for at least six (6) months may, on behalf of himself and all others similarly situated, petition any court of competent jurisdiction for the removal of the Trustee and the appointment of a successor trustee;
provided, however, that if no successor Trustee shall have been appointed and have accepted appointment sixty (60) days after either the Company or the Holders has removed the Trustee, the Trustee so removed may petition at its own
expense any court of competent jurisdiction for an appointment of a successor trustee. Such court may thereupon, after such notice, if any, as it may deem proper and prescribe, remove the Trustee and appoint a successor trustee. 

(c) The Requisite Holders at the time outstanding may at any time remove the Trustee with or without cause and nominate a successor trustee
which shall be deemed appointed as successor trustee. 
 (d) Any resignation or removal of the Trustee and appointment of a successor
trustee pursuant to any of the provisions of this Section 11.11 shall become effective upon acceptance of appointment by the successor trustee as provided in Section 11.12. 

Section 11.12 Acceptance by Successor Trustee 

Any successor trustee appointed as provided in Section 11.11 shall execute, acknowledge and deliver to the Company and to its predecessor
trustee an instrument accepting such appointment hereunder, and thereupon the resignation or removal of the predecessor trustee shall become effective and such successor trustee, without any further act, deed or conveyance, shall become vested with
all the rights, powers, duties and obligations of its predecessor hereunder, with like effect as if originally named as trustee herein; but, nevertheless, on the written request of the Company or of the successor trustee, the trustee ceasing to act
shall, upon payment of any amount then due it pursuant to the provisions of Section 11.07, execute and deliver an instrument transferring to such successor trustee all the rights and powers of the trustee so ceasing to act. Upon request of any
such successor trustee, the Company shall execute any and all instruments in writing for more fully and certainly vesting in and confirming to such successor trustee all such rights and powers. Any trustee ceasing to act shall, nevertheless, retain
a lien upon all property and funds held or collected by such trustee as such, except for funds held in trust for the benefit of Holders of particular Notes, to secure any amounts then due it pursuant to the provisions of Section 11.07. 

No successor trustee shall accept appointment as provided in this Section 11.12 unless, at the time of such acceptance, such successor
trustee shall be qualified under the provisions of Section 11.09 and be eligible under the provisions of Section 11.10. 

  
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 Upon acceptance of appointment by a successor trustee as provided in this Section 11.12, the
Company (or the former trustee, at the written direction of the Company) shall mail or cause to be mailed notice of the succession of such trustee hereunder to the Holders of Notes at their addresses as they shall appear on the Register. If the
Company fails to mail such notice within ten (10) days after acceptance of appointment by the successor trustee, the successor trustee shall cause such notice to be mailed at the expense of the Company. 

Section 11.13 Succession by Merger, Etc. 

Any corporation into which the Trustee may be merged or converted or with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which the Trustee shall be a party, or any corporation succeeding to all or substantially all of the corporate trust business of the Trustee (including any trust created by this Indenture), shall be the
successor to the Trustee hereunder without the execution or filing of any paper or any further act on the part of any of the parties hereto, provided that in the case of any corporation succeeding to all or substantially all of the corporate trust
business of the Trustee, such corporation shall be qualified under the provisions of Section 11.09 and eligible under the provisions of Section 11.10. 

In case at the time such successor to the Trustee shall succeed to the trusts created by this Indenture, any of the Notes shall have been
authenticated but not delivered, any such successor to the Trustee may adopt the certificate of authentication of any predecessor trustee or authenticating agent appointed by such predecessor trustee, and deliver such Notes so authenticated; and in
case at that time any of the Notes shall not have been authenticated, any successor to the Trustee or any authenticating agent appointed by such successor trustee may authenticate such Notes in the name of the successor trustee; and in all such
cases such certificates shall have the full force that is provided in the Notes or in this Indenture; provided, however, that the right to adopt the certificate of authentication of any predecessor Trustee or authenticate Notes in the name of
any predecessor Trustee shall apply only to its successor or successors by merger, conversion or consolidation. 
 Section 11.14
Preferential Collection of Claims 
 If and when the Trustee shall be or become a creditor of the Company (or any other obligor upon
the Notes), the Trustee shall be subject to the provisions of § 311(a) of the Trust Indenture Act, excluding any creditor relationship listed in § 311(b), regarding the collection of the claims against the Company (or any such other
obligor). A Trustee who has resigned or been removed shall be subject to § 311(a) to the extent indicated therein. 

Section 11.15 Trustee’s Application for Instructions from the Company 

Any application by the Trustee for written instructions from the Company (other than with regard to any action proposed to be taken or omitted
to be taken by the Trustee that affects the rights of the Holders of the Notes under this Indenture) may, at the option of the Trustee, set forth in writing any action proposed to be taken or omitted by the Trustee under this Indenture and the date
on and/or after which such action shall be taken or such omission shall be effective. The Trustee shall not be liable for any action taken by, or omission of, the Trustee in accordance 

  
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with a proposal included in such application on or after the date specified in such application (which date shall not be less than three (3) Business Days after the date any officer of the
Company actually receives such application, unless any such officer shall have consented in writing to any earlier date) unless prior to taking any such action (or the effective date in the case of an omission), the Trustee shall have received
written instructions in response to such application specifying the action to be taken or omitted. 
 Section 11.16 Collateral
Trustee 
 In acting as Collateral Trustee, the Collateral Trustee may rely upon, and shall be entitled to the benefits, rights,
protections, immunities and indemnities of and to enforce, each and all of the rights, powers, immunities, indemnities and benefits of the Trustee under this Indenture including, without limitation, those set forth in this Article 11 as well as in
Sections 1.02 and 1.03. The Collateral Trustee may resign or be removed, and the Collateral Trustee’s successor shall be appointed in the same manner as provided with respect to the Trustee under this Article 11 (for the avoidance of doubt, the
provisions of Sections 11.11 and 11.12 of this Indenture shall be interpreted to apply to the Collateral Trustee as if it was referenced therein in lieu of the Trustee). 

ARTICLE 12 

HOLDERS’ LISTS AND REPORTS BY TRUSTEE 

Section 12.01 Company to Furnish Trustee Names and Addresses of Holders 

The Trustee shall preserve in as current a form as is reasonably practicable the most recent list available to it of the names and addresses
of Holders of the Notes and shall otherwise comply with Trust Indenture Act §312(a). If the Trustee is not the Registrar, the Company will furnish or cause to be furnished to the Trustee: 

(i) quarterly, not more than fifteen (15) days after each Regular Record Date, a list, in such form as the Trustee may
reasonably require, of the names and addresses of the Holders as of such Regular Record Date; and 
 (ii) at such other times
as the Trustee may request in writing, within thirty (30) days after the receipt by the Company of any such request, a list of similar form and content as of a date not more than fifteen (15) days prior to the time such list is furnished;

 excluding from any such list names and addresses received by the Trustee in its capacity as Registrar. 

Section 12.02 Preservation of Information; Communications to Holders 

(a) The Trustee shall preserve, in as current a form as is reasonably practicable, the names and addresses of Holders contained in the most
recent list furnished to the Trustee as provided in Section 12.01 and the names and addresses of Holders received by the Trustee in its capacity as Registrar. The Trustee may destroy any list furnished to it as provided in Section 12.01
upon receipt of a new list so furnished. 

  
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 (b) Holders may communicate pursuant to Trust Indenture Act § 312(b) with other Holders with
respect to their rights under this Indenture or the Notes. The Company, the Trustee, the Registrar and anyone else shall have the protection of Trust Indenture Act Section 312(c). 

(c) Every Holder, by receiving and holding the same, agrees with the Company and the Trustee that neither the Company nor the Trustee nor any
agent of either of them shall be held accountable by reason of any disclosure of information as to names and addresses of Holders made pursuant to applicable law. 

Section 12.03 Reports By Trustee 

Within sixty (60) days after each January 15 beginning with the January 15 following the date of this Indenture, and for so long
as Notes remain outstanding, the Trustee shall mail to the Holders of the Notes a brief report dated as of such reporting date that complies with Trust Indenture Act § 313(a) (but if no event described in Trust Indenture Act § 313(a) has
occurred within the twelve months preceding the reporting date, no report need be transmitted). The Trustee also shall comply with Trust Indenture Act § 313(b)(2), to the extent applicable, and § 313(b)(1). The Trustee shall also transmit
by mail all reports as required by Trust Indenture Act § 313(c). 
 A copy of each report at the time of its mailing to the Holders of
Notes shall be mailed to the Company and filed with the SEC and each stock exchange (if any) on which the Notes are listed in accordance with Trust Indenture Act § 313(d). The Company shall promptly notify the Trustee when the Notes are listed
on or de-listed from any stock exchange. 
 ARTICLE 13 

SATISFACTION AND DISCHARGE 

Section 13.01 Discharge of Indenture 

When (a) the Company shall deliver to the Trustee for cancellation all Notes theretofore authenticated (other than any Notes that have
been destroyed, lost or stolen and in lieu of or in substitution for which other Notes shall have been authenticated and delivered) and not theretofore canceled, or (b) all the Notes not theretofore canceled or delivered to the Trustee for
cancellation shall have become due and payable, and the Company shall deposit with the Trustee, in trust, cash or shares of Common Stock (in the case of any conversion) sufficient to pay on the Maturity Date, upon any Fundamental Change Date or upon
any conversion (other than any Notes that shall have been mutilated, destroyed, lost or stolen and in lieu of or in substitution for which other Notes shall have been authenticated and delivered) not theretofore canceled or delivered to the Trustee
for cancellation, including principal and interest or shares of Common Stock (in the case of any conversion) due to such Maturity Date, Fundamental Change Purchase Date or upon conversion, as the case may be, accompanied by a verification report, as
to the sufficiency of the deposited amount, from an independent certified accountant or other financial professional satisfactory to the Trustee, and if the Company shall also pay or deliver or cause to be paid or delivered all other sums payable or
deliverable hereunder by the Company, then this Indenture shall cease to be of further effect (except as to (i) remaining rights of 

  
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registration of transfer, substitution and exchange and conversion of Notes, (ii) rights hereunder of Holders to receive payments of principal of and interest or (in the case of any
conversion) shares of Common Stock on, the Notes and the other rights, duties and obligations of Holders, as beneficiaries hereof with respect to the amounts, if any, so deposited with the Trustee and (iii) the rights, obligations and
immunities of the Trustee hereunder), and the Trustee, on written demand of the Company accompanied by an Officers’ Certificate and an Opinion of Counsel as required by Section 1.02 and at the cost and expense of the Company, shall execute
proper instruments acknowledging satisfaction of and discharging this Indenture; the Company, however, hereby agrees to the Trustee for any costs or expenses thereafter reasonably and properly incurred by the Trustee and to compensate the Trustee
for any services thereafter reasonably and properly rendered by the Trustee in connection with this Indenture or the Notes. 

Section 13.02 Deposited Monies to be Held in Trust by Trustee 

Subject to Section 13.04, all monies and shares of Common Stock deposited with the Trustee pursuant to Section 13.01 shall be held in
trust for the sole benefit of the Holders, and such monies and shares of Common Stock shall be applied by the Trustee to the payment, either directly or through any Paying Agent (including the Company if acting as its own Paying Agent), to the
Holders of the particular Notes for the payment or delivery upon conversion thereof have been deposited with the Trustee, of all sums and amounts due thereon for principal and interest or upon conversion. 

Section 13.03 Paying Agent to Repay Monies Held 

Upon the satisfaction and discharge of this Indenture, all monies then held by any Paying Agent of the Notes (other than the Trustee) shall,
upon written request of the Company, be repaid to it or paid to the Trustee, and thereupon such Paying Agent shall be released from all further liability with respect to such monies. 

Section 13.04 Return of Unclaimed Monies 

Subject to the requirements of applicable abandoned property laws, any monies or shares of Common Stock deposited with or paid to the Trustee
for payment of the principal of or interest on Notes and not applied but remaining unclaimed by the Holders of Notes for two years after the date upon which the principal of or interest on such Notes or shares of Common Stock, as the case may be,
shall have become due and payable, shall be repaid to the Company by the Trustee on demand and all liability of the Trustee shall thereupon cease with respect to such monies or shares of Common Stock; and the Holder of any of the Notes shall
thereafter look only to the Company for any payment or delivery that such Holder may be entitled to collect unless an applicable abandoned property law designates another Person. 

Section 13.05 Reinstatement 

If the Trustee or the Paying Agent is unable to apply any money or shares of Common Stock in accordance with Section 13.02 by reason of
any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, the Company’s obligations under this Indenture and the Notes shall be revived and reinstated as though no deposit had
occurred pursuant to Section 13.01 until such time as the Trustee or the 

  
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Paying Agent is permitted to apply all such money or shares of Common Stock in accordance with Section 13.02; provided, however, that if the Company makes any payment of interest on
or principal of any Note or delivery of shares of Common Stock due upon conversion following the reinstatement of its obligations, the Company shall be subrogated to the rights of the Holders of such Notes to receive such payment from the money, or
delivery from the shares of Common Stock, as the case may be, held by the Trustee or Paying Agent. 
 ARTICLE 14 

SUPPLEMENTAL INDENTURES 

Section 14.01 Supplemental Indentures without Consent of Holders 

Without the consent of any Holders, the Credit Parties and the Trustee, at any time and from time to time, may enter into one or more
indentures supplemental hereto, in form satisfactory to the Trustee, for any of the following purposes: 
 (i) to cure any
ambiguity or correct any inconsistent or otherwise defective provision contained herein, so long as such action will not adversely affect the interests of the Holders in any material respect; 

(ii) to comply with the requirements of Sections 7.05 or 7.07(c); 

(iii) to add any additional Guarantor with respect to the Notes in accordance with Section 4.21 or to evidence the release
of any Guarantor from its Subsidiary Guarantee in accordance with Section 15.03; 
 (iv) to add additional security or
collateral to secure the Obligations; 
 (v) to make any change that would provide any additional rights or benefits to the
Holders; 
 (vi) to make any change that does not materially adversely affect the rights of any Holder under this Indenture
or any Security Document; 
 (vii) to comply with the rules of any applicable securities depository; 

(viii) to evidence and provide for the acceptance of appointment by a successor Trustee in accordance with the provisions set
forth in this Indenture; or 
 (ix) to provide for the issuance of Additional Notes in accordance with the provisions set
forth in this Indenture. 
 Section 14.02 Supplemental Indentures with Consent of Holders 

With the consent of the Requisite Holders (including consents obtained in connection with a purchase of, or tender offer or exchange offer for,
Notes), as evidenced in accordance with Section 1.04, the Company, when authorized by a Board Resolution, the Guarantors and the Trustee may enter into an indenture or indentures supplemental hereto for the purpose of adding

  
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any provisions to or changing in any manner or eliminating any of the provisions of this Indenture or of modifying in any manner the rights of the Holders under this Indenture; provided,
however, that no such supplemental indenture shall, without the consent of the Holder of each outstanding Note directly and adversely affected thereby, among other things: 

(i) reduce the percentage in Principal Amount of Notes whose Holders must consent to an amendment of this Indenture or to waive
any past default; 
 (ii) reduce the rate of any interest on any Note; 

(iii) reduce the Principal Amount of, or extend the Maturity Date of, any Note (notwithstanding the foregoing, for the
avoidance of doubt, each Holder shall be permitted to extend the Maturity Date in regards to its Note without the consent of any other Holder); 

(iv) make any change that impairs or adversely affects the conversion rights of any Note (notwithstanding the foregoing, for
the avoidance of doubt, each Holder shall be permitted to make such changes in regards to its Note without the consent of any other Holder); 

(v) reduce the Fundamental Change Purchase Price or the Make-Whole Payments of any Note or amend or modify in any manner
adverse to the Holders of Notes the Company’s obligation to make such payments, whether through an amendment or waiver of provisions in the covenants, definitions or otherwise (notwithstanding the foregoing, for the avoidance of doubt, each
Holder shall be permitted to make such changes in regards to its Note without the consent of any other Holder); 
 (vi) make
any Note payable in a currency other than that stated in the Notes (notwithstanding the foregoing, for the avoidance of doubt, each Holder shall be permitted to make such changes in regards to its Note without the consent of any other Holder); 

(vii) [Reserved]; 

(viii) [Reserved]; 

(ix) Reserved; or 

(x) modify any of the provisions of this Section 14.02 or Section 9.02(b).] 

provided, however, that any actions constituting a release of all or substantially all of the Collateral shall require the consent of the Requisite
Holders. 
 It shall not be necessary for any consent of Holders under this Section 14.02 to approve the particular form of any
proposed supplemental indenture, but it shall be sufficient if such act shall approve the substance thereof. 

  
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 Section 14.03 Execution of Supplemental Indentures 

In executing, or accepting the additional trusts created by, any supplemental indenture permitted by this Article 14 or the modifications
thereby of the trusts created by this Indenture, the Trustee shall be provided with, and (subject to Section 11.01) shall be fully protected in relying upon, in addition to the documents required by Section 1.02, an Opinion of Counsel
stating that the execution of such supplemental indenture is authorized or permitted by this Indenture. Subject to the preceding sentence, the Trustee shall sign such supplemental indenture if the same does not adversely affect the Trustee’s
own rights, duties or immunities under this Indenture or otherwise. The Trustee may, but shall not be obligated to, enter into any such supplemental indenture that adversely affects the Trustee’s own rights, duties or immunities under this
Indenture or otherwise. 
 Section 14.04 Effect of Supplemental Indentures 

Upon the execution of any supplemental indenture under this Article 14, this Indenture shall be modified in accordance therewith, and such
supplemental indenture shall form a part of this Indenture for all purposes; and every Holder theretofore or thereafter authenticated and delivered hereunder shall be bound thereby. 

Section 14.05 [Reserved] 

Section 14.06 Reference in Notes to Supplemental Indentures 

Notes authenticated and delivered after the execution of any supplemental indenture pursuant to this Article 14 shall bear a notation in form
approved by the Trustee as to any matter provided for in such supplemental indenture. If the Company shall so determine, new Notes so modified as to conform, in the opinion of the Trustee and the Company, to any such supplemental indenture may be
prepared and executed by the Company and authenticated and delivered by the Trustee in exchange for outstanding Notes. 
 Section 14.07
Notice to Holders of Supplemental Indentures 
 The Company shall cause notice of the execution of any supplemental indenture pursuant
to Section 14.02 to be mailed to each Holder, at such Holder’s address appearing on the Register provided for in this Indenture, within twenty (20) days after execution thereof. Failure to deliver such notice, or any defect in such
notice, shall not impair or affect the legality or validity of such supplemental indenture. 
 ARTICLE 15 

GUARANTEES OF NOTES 

Section 15.01 Subsidiary Guarantees 

Subject to this Article 15, each of the Guarantors hereby, jointly and severally, unconditionally guarantees, on a senior secured basis, as
primary obligors and not as a surety, to each Holder (and its successors and assigns) of a Note authenticated and delivered by the Trustee and to the Trustee and its successors and assigns, irrespective of the validity and enforceability of this
Indenture, the Notes and/or the Obligations of the Company hereunder and thereunder, that: 

  
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 (a) the principal of, and interest on, each of the Notes will be promptly paid in full when due,
whether at stated maturity, by required prepayment, declaration, demand, by acceleration, upon repurchase or otherwise, and interest on the overdue principal of and (to the extent permitted by law) interest (including but not limited to any
outstanding accrued but not yet capitalized PIK Interest, all outstanding capitalized PIK Interest and any Additional Interest, and any interest, fees, costs or charges that would accrue but for the provisions of Title 11 of the United States Code
after any bankruptcy or insolvency petition under Title 11 of the United States Code) and any outstanding Make-Whole Payment on the Notes, and all other payment obligations of the Company to the Holders or the Trustee under this Indenture or the
Notes will be promptly paid in full and performed, all in accordance with the terms hereof and thereof; and 
 (b) in case of any extension
of time of payment or renewal of any Notes or any of such other obligations, the same will be promptly paid in full when due or performed in accordance with the terms of the extension or renewal, subject to any applicable grace period, whether at
stated maturity, by acceleration, upon repurchase or otherwise (such obligations in clauses (a) and (b) being herein collectively called the “Guaranteed Obligations”). 

Failing payment when so due of any amount so guaranteed for whatever reason, the Guarantors will be jointly and severally obligated to pay the
same immediately. An Event of Default under this Indenture or the Notes shall constitute an event of default under the Subsidiary Guarantees, and shall entitle the Holders to accelerate the obligations of the Guarantors hereunder in the same manner
and to the same extent as the obligations of the Company. 
 The Guarantors hereby agree that their obligations hereunder shall be absolute,
irrevocable and unconditional, irrespective of the value, genuineness, validity, regularity or enforceability of the Notes or this Indenture or any other agreement or instrument referred to herein or therein, the absence of any action to enforce the
same, any waiver or consent by any Holder with respect to any provisions hereof or thereof, the recovery of any judgment against the Company, any action to enforce the same or any other circumstance (other than complete performance) which might
otherwise constitute a legal or equitable discharge or defense of a surety or Guarantor. Without limiting the generality of the foregoing, it is agreed that the occurrence of any one or more of the following shall not alter or impair the liability
of the Guarantors hereunder which remain absolute, irrevocable and unconditional under any and all circumstances as described above: 
 (i)
at any time or from time to time, without notice to the Guarantors, the time for any performance of or compliance with any of the Guaranteed Obligations shall be extended, or such performance or compliance shall be waived; 

(ii) any of the acts mentioned in any of the provisions of this Indenture or the Notes, if any, or any other agreement or instrument referred
to herein or therein shall be done or omitted; 
 (iii) the maturity of any of the Guaranteed Obligations shall be accelerated, or any of
the Guaranteed Obligations shall be amended in any respect, or any right under the Indenture, Notes, or any other agreement or instrument referred to herein or therein shall be amended or waived in any respect or any other guarantee of any of the
Guaranteed Obligations or any security therefor shall be released or exchanged in whole or in part or otherwise dealt with; 

  
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 (iv) any Lien or security interest granted to, or in favor of any Holder or the Trustee as
security for any of the Guaranteed Obligations shall fail to be perfected; or 
 (v) the release of any other Guarantor. 

Each Guarantor further, to the extent permitted by law, hereby waives diligence, presentment, demand of payment, filing of claims with a court
in the event of insolvency or bankruptcy of the Company, any right to require a proceeding first against the Company, protest, notice and all demands whatsoever and covenants that its Subsidiary Guarantee will not be discharged except by complete
performance of the obligations contained in the Notes and this Indenture. 
 If any Holder or the Trustee is required by any court or
otherwise to return to the Credit Parties, or any custodian, Trustee or other similar official acting in relation to any Credit Party, any amount paid by any Credit Party to the Trustee or such Holder, the Subsidiary Guarantees, to the extent
theretofore discharged, shall be reinstated in full force and effect. Each Guarantor agrees that it shall not be entitled to any right of subrogation in relation to the Holders in respect of any obligations guaranteed hereby until payment in full of
the obligations guaranteed hereby. 
 Each Guarantor further agrees that, as between the Guarantors, on the one hand, and the Holders and
the Trustee, on the other hand, (a) the maturity of the obligations guaranteed hereby may be accelerated as provided in Article 9 hereof (and shall be deemed to have become automatically due and payable in the circumstances in said Article 9)
for the purposes of its Subsidiary Guarantee, notwithstanding any stay, injunction or other prohibition preventing such acceleration in respect of the obligations guaranteed thereby, and (b) in the event of any declaration of acceleration of
such obligations as provided in Article 9 hereof, such obligations (whether or not due and payable) shall forthwith become due and payable by the Guarantor for the purpose of its Subsidiary Guarantee. The Guarantors shall have the right to seek
contribution from any non-paying Guarantor so long as the exercise of such right does not impair the rights of the Holders under the Subsidiary Guarantees. 

Section 15.02 [Reserved] 

Section 15.03 Releases of Subsidiary Guarantees 

The Subsidiary Guarantee of a Guarantor shall be automatically and unconditionally released: (1) in connection with any Disposition
(including by way of merger or consolidation) of the Capital Stock of such Guarantor to a Person that is not (either before or after giving effect to such transaction) a Credit Party, to the extent such sale is permitted hereunder or to the extent
such Capital Stock constitutes Excluded Property; (2) upon the designation of such Guarantor as an Unrestricted Subsidiary in accordance with the terms of this Indenture; (3) upon satisfaction and discharge of this Indenture in accordance
with Article 13 or (4) upon payment of the Obligations in full in immediately available funds. 

  
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 Upon delivery by the Company to the Trustee of an Officers’ Certificate to the effect that
any of the conditions described in the foregoing clauses (1), (2), (3) or (4) has occurred, the Trustee shall execute any documents reasonably requested by the Company in order to evidence the release of any Guarantor from its obligations
under its Subsidiary Guarantee. Any Guarantor not released from its obligations under its Subsidiary Guarantee shall remain liable for the full amount of principal of and interest, premium, and Additional Interest, if any, on, the Notes and for the
other obligations of such Guarantor under this Indenture as provided in this Article 15. 
 Further, the Subsidiary Guarantees with respect
to a Note are not convertible and will automatically terminate when that Note is converted in accordance with Article 7. 

Section 15.04 Instrument for the Payment of Money.  

Each Guarantor hereby acknowledges that the guarantee in this Article 15 constitutes an instrument for the payment of money, and consents and
agrees that any Holder (to the extent that the Holder is otherwise entitled to exercise rights and remedies hereunder) or the Trustee, at its sole option, in the event of a dispute by such Guarantor in the payment of any moneys due hereunder, shall
have the right to bring a motion-action under New York CPLR Section 3213 to the extent permitted thereunder. 
 Section 15.05
Limitation on Guarantor Liability 
 Each Guarantor, and by its acceptance of Notes, each Holder, hereby confirms that it is the
intention of all such parties that the Subsidiary Guarantee of such Guarantor not constitute a fraudulent transfer or conveyance for purposes of any bankruptcy law, the Uniform Fraudulent Conveyance Act, the Uniform Fraudulent Transfer Act or any
similar federal or state law to the extent applicable to any Subsidiary Guarantee. The obligations of each Guarantor under its Subsidiary Guarantee will be limited to the maximum amount as will, after giving effect to all other contingent and fixed
liabilities of such Guarantor and after giving effect to any collections from or payments made by or on behalf of any other Guarantor in respect of the obligations of such other Guarantor under its Subsidiary Guarantee or pursuant to its
contribution obligations under this Indenture, result in the obligations of such Guarantor under its Subsidiary Guarantee not constituting a fraudulent conveyance or fraudulent transfer under federal or state law and not otherwise being void or
voidable under any similar laws affecting the rights of creditors generally. 
 Section 15.06 “Trustee” to Include Paying
Agent 
 In case at any time any Paying Agent other than the Trustee shall have been appointed and be then acting hereunder, the term
“Trustee” as used in this Article 15 shall in each case (unless the context shall otherwise require) be construed as extending to and including such Paying Agent within its meaning as fully and for all intents and purposes as if such
Paying Agent were named in this Article 15 in place of the Trustee. 
 ARTICLE 16 

MISCELLANEOUS 

Section 16.01 [Reserved] 

  
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 Section 16.02 Notices to Parties Hereto 

Any notice or communication shall be in writing in the English language and delivered in person, via facsimile or mailed by first-class mail
(registered or certified, return receipt requested), or overnight air courier guaranteeing next day delivery, addressed as follows: 
 if to
the Credit Parties: 
 Gevo, Inc. 

345 Inverness Drive South, Building C, Suite 310 

Englewood, Colorado 80112 

Attention: Chief Financial Officer 

Facsimile No. (    )     -     

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

			
	 Paul Hastings LLP
	 	
	  
	 	
	  
	 	

 Attention: 

Facsimile No. (    )     -     

if to the Trustee: 
 Wilmington
Savings Fund Society, FSB 
 500 Delaware Ave., 11th Floor 

Wilmington, DE 19801 

Attention: Corporate Trust – Gevo 10.0% Convertible Senior 

Secured Notes 
 Facsimile No.
(302) 421-9137 
 The Credit Parties or the Trustee by notice to the others may designate additional or different addresses for
subsequent notices or communications. 
 Any notice or communication to a registered Holder shall be given in the manner provided in
Section 1.06. Any such notice or communication shall also be so mailed to any Person described in Trust Indenture Act § 313(c), to the extent required by the Trust Indenture Act. 

Section 16.03 [Reserved] 

Section 16.04 When Notes Are Disregarded 

In determining whether the Holders of the required Principal Amount of Notes have concurred in any direction, waiver or consent, Notes owned by
the Credit Parties or by any Affiliate of the Credit Parties shall be disregarded and deemed not to be outstanding, except that, for the purpose of determining whether the Trustee shall be protected in relying on any such direction, waiver or
consent, only Notes which a Trust Officer of the Trustee actually knows are 

  
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so owned shall be so disregarded. Also, subject to the foregoing, only Notes outstanding at the time shall be considered in any such determination. For purposes of this Section 16.04, the
Permitted Holders shall not be deemed to be Affiliates of the Credit Parties. 
 Section 16.05 Rules by Trustee, Paying Agent and
Registrar 
 The Trustee may make reasonable rules for action by, or a meeting of, the Holders. The Registrar and the Paying Agent may
make reasonable rules for their functions. 
 Section 16.06 Legal Holidays 

If an Interest Payment Date is a Legal Holiday, payment shall be made on the next succeeding day that is not a Legal Holiday, and no interest
shall accrue for the intervening period. If a Regular Record Date is a Legal Holiday, the Regular Record Date shall not be affected. In any case where the Maturity Date, Fundamental Change Purchase Date or other payment date, as the case may be, of
any Note is a Legal Holiday, then (notwithstanding any other provision of this Indenture or of the Notes) payment of principal need not be made on such date, but may be made on the next succeeding day that is not a Legal Holiday, with the same force
and effect as if made on such Maturity Date, Fundamental Change Purchase Date or other payment date, as the case may be. 

Section 16.07 Governing Law 
 THIS
INDENTURE AND THE NOTES SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK (OR, TO THE EXTENT REQUIRED, THE LAW OF THE JURISDICTION IN WHICH THE COLLATERAL IS LOCATED), WITHOUT REGARD TO CONFLICTS OF LAWS
PRINCIPLES THEREOF. 
 Section 16.08 No Recourse against Others 

An incorporator, director, officer, employee, Affiliate or shareholder of any Credit Party, solely by reason of this status, shall not have any
liability for any Obligations, or for any claim based on, in respect of or by reason of such Obligations or their creation. By accepting a Note, each Holder shall waive and release all such liability. The waiver and release shall be part of the
consideration for the issue of the Notes. 
 Section 16.09 Successors 

All agreements of the Credit Parties in this Indenture and the Notes shall bind their respective successors. All agreements of the Trustee in
this Indenture shall bind its successors. 
 Section 16.10 Multiple Originals 

The parties may sign any number of copies of this Indenture. Each signed copy shall be an original, but all of them together represent the same
agreement. One signed copy is enough to prove this Indenture. Delivery of an executed counterpart by facsimile or PDF shall be as effective as delivery of a manually executed counterpart thereof. 

  
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 Section 16.11 [Reserved] 

Section 16.12 Table of Contents; Headings 

The table of contents, cross-reference sheet and headings of the Articles and Sections of this Indenture have been inserted for convenience of
reference only, are not intended to be considered a part hereof and shall not modify or restrict any of the terms or provisions hereof. 

Section 16.13 Severability Clause 

In case any provision in this 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. 

Section 16.14 Calculations 

Except as otherwise provided herein, the Company (or its agents) will be responsible for making all calculations called for under this
Indenture or the Notes. The Company (or its agents) will make all such calculations in good faith and, absent manifest error, its calculations will be final and binding on Holders. The Company (or its agents) upon request will provide a schedule of
its calculations to each of the Trustee and the Conversion Agent, and each of the Trustee and Conversion Agent is entitled to rely conclusively upon the accuracy of such calculations without independent verification. The Trustee will deliver a copy
of such schedule to any Holder upon the written request of such Holder. 
 Section 16.15 Waiver of Jury Trial 

EACH OF THE CREDIT PARTIES AND THE TRUSTEE HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN
ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS INDENTURE, THE NOTES OR THE TRANSACTION CONTEMPLATED THEREBY. 
 Section 16.16
Consent to Jurisdiction 
 (a) Each of the Credit Parties hereby irrevocably and unconditionally submits, for itself and its property,
to the nonexclusive jurisdiction of any competent New York State court or federal court of the United States sitting in the State and City of New York, County of New York and Borough of Manhattan, and any appellate court from any thereof, in any
action or proceeding arising out of or relating to this Indenture or the Notes, or for recognition or enforcement of any judgment, and each of the parties hereto hereby irrevocably and unconditionally agrees that all claims in respect of any such
action or proceeding may be heard and determined in such state court sitting in the State and City of New York, County of New York and Borough of Manhattan or, to the extent permitted by law, in such federal court sitting in the State and City of
New York, County of New York and Borough of Manhattan. 

  
 D-155 

 (b) Each of the Credit Parties hereby irrevocably and unconditionally waives, to the fullest
extent it may legally and effectively do so, any objection which it may now or hereafter have to the laying of venue of any suit, action proceeding arising out of or relating to this Indenture or the Notes in any such New York State or federal
court. Each of the parties hereto hereby irrevocably waives, to the fullest extent permitted by law, the defense of an inconvenient forum to the maintenance of such action or proceeding in any such court. 

Section 16.17 Force Majeure 

In no event shall the Trustee be responsible or liable for any failure or delay in the performance of its obligations hereunder arising out of
or caused by, directly or indirectly, forces beyond its control, including, without limitation, strikes, work stoppages, accidents, acts of war or terrorism, civil or military disturbances, nuclear or natural catastrophes or acts of God, and
interruptions, loss or malfunctions of utilities, communications or computer (software or hardware) services; it being understood that the Trustee shall use reasonable efforts which are consistent with accepted practices in the banking industry to
resume performance as soon as practicable under the circumstances. 
 Section 16.18 Confidentiality 

Each Holder, by acceptance of Notes, agrees as follows: 

No Holder shall disclose any Confidential Information (as defined below) to any Person without the consent of the Company, other than
(a) to such Holder’s Affiliates and their officers, directors, employees, agents and advisors, (b) as required by any law, rule or regulation or judicial process, (c) as requested or required by any state, federal or foreign
Governmental Authority or regulatory authority or examiner regulating such Holder (including the National Association of Insurance Commissioners), (d) Reserved, (e) in connection with the exercise of any remedies hereunder or any suit,
action or proceeding relating to this Indenture or any other Equity Document or the enforcement of rights hereunder or thereunder in a related court proceeding so long as such Confidential Information is (i) filed under seal with the applicable
court, (ii) used in a manner consistent with any applicable protective order entered by any applicable court proceeding, or (iii) as may be agreed between the Holder and the Company, (f) Reserved and (g) other Holders. No Holder
shall disclose any Confidential Information to any Person in contravention of any confidentiality agreement entered into by such Holder. “Confidential Information” means information concerning the Company or any of its direct or indirect
shareholders, or any of their respective employees, directors, or Subsidiaries, or Affiliates received by any Holder on a confidential basis from the Company or any other Person under or pursuant to this Indenture or any other Equity Document
including without limitation financial terms and financial and organizational information contained in any documents, statements, certificates, materials or information furnished, or to be furnished, by or on behalf of the Company or any other
Person on a confidential basis in connection with this Indenture and the Equity Documents, but does not include any such information that (i) is publicly available at the time of disclosure or becomes publicly available other than as a result
of a breach of this Section 16.18 or (ii) becomes available to the Holder on a non-confidential basis from a source other than the Company or any of its direct or indirect shareholders, or any of their respective

  
 D-156 

 
employees, directors, Subsidiaries or Affiliates or any of their respective agents or representatives. 

[Remainder of the page intentionally left blank] 

  
 D-157 

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

			
	COMPANY:
	
	GEVO, INC.
		
	By:	 	  

	Name:	 	  

	Title:	 	  

	
	GUARANTORS:
		
	By:	 	  

	Name:	 	  

	Title:	 	  

	
	TRUSTEE:
	
	 WILMINGTON SAVINGS FUND SOCIETY, FSB

as Trustee

		
	By:	 	  

	Name:	 	Kristin L. Moore
	Title:	 	Assistant Vice President
	
	COLLATERAL TRUSTEE:
	
	 WILMINGTON SAVINGS FUND SOCIETY, FSB

as Collateral Trustee

		
	By:	 	  

	Name:	 	Kristin L. Moore
	Title:	 	Assistant Vice President

  
 D-158 

 EXHIBIT A 

[FORM OF RESTRICTED STOCK LEGEND] 

THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY STATE SECURITIES
LAWS. NEITHER THIS SECURITY NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT
SUBJECT TO, REGISTRATION. 
 THE HOLDER OF THIS SECURITY, BY ITS ACCEPTANCE HEREOF (1) REPRESENTS THAT (A) IT IS A “QUALIFIED
INSTITUTIONAL BUYER” (“QIB”) (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) OR (B) IT IS NOT A U.S. PERSON, IS NOT ACQUIRING THIS SECURITY FOR THE ACCOUNT OF BENEFIT OF A U.S. PERSON AND IS ACQUIRING THIS SECURITY IN AN
OFFSHORE TRANSACTION IN COMPLIANCE WITH REGULATION S UNDER THE SECURITIES ACT, AND (2) AGREES THAT IT WILL NOT, WITHIN THE TIME PERIOD REFERRED TO UNDER 144(d)(1) (TAKING INTO ACCOUNT THE PROVISIONS OF RULE 144(d) UNDER THE SECURITIES ACT, IF
APPLICABLE) UNDER THE SECURITIES ACT AS IN EFFECT ON THE DATE OF THE TRANSFER OF THIS SECURITY, OFFER, RESELL OR OTHERWISE TRANSFER THIS SECURITY EXCEPT (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) TO A PERSON WHOM THE HOLDER
REASONABLY BELIEVES IS A QIB PURCHASING FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QIB IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT OR AN AVAILABLE EXEMPTION FROM REGISTRATION REQUIREMENTS OF THE SECURITIES ACT OR (C) OUTSIDE THE
UNITED STATES IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE 904 UNDER THE SECURITIES ACT, (D) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE AND PROVIDED THAT PRIOR TO SUCH TRANSFER,
THE TRUSTEE IS FURNISHED WITH AN OPINION OF COUNSEL ACCEPTABLE TO THE COMPANY THAT SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT) OR (E) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT AND, IN EACH CASE, IN
ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS, AND (3) AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THIS SECURITY OR AN INTEREST HEREIN IS TRANSFERRED (OTHER THAN A TRANSFER PURSUANT TO CLAUSE (2)(D) ABOVE) A NOTICE SUBSTANTIALLY
TO THE EFFECT OF THIS LEGEND. 

  
 D-159 

 EXHIBIT B 

THE TRANSFER OF ALL OR ANY PORTION OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT IS SUBJECT TO THE RESTRICTIONS AND CONDITIONS SPECIFIED IN
AN EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER. ANY TRANSFER OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT THAT IS NOT MADE IN COMPLIANCE WITH THE RESTRICTIONS AND CONDITIONS SET FORTH IN THE EXCHANGE
AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER SHALL BE ABSOLUTELY VOID AB INITIO. A COPY OF SUCH EXCHANGE AND PURCHASE AGREEMENT WILL BE FURNISHED WITHOUT CHARGE BY THE ISSUER TO THE HOLDER HEREOF UPON WRITTEN REQUEST. 

THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO A PARI PASSU INTERCREDITOR AGREEMENT AMONG THE ISSUER, THE INITIAL PURCHASER AND CERTAIN OTHER
PARTIES. A COPY OF SUCH PARI PASSU INTERCREDITOR AGREEMENT WILL BE FURNISHED WITHOUT CHARGE BY THE ISSUER TO THE HOLDER HEREOF UPON WRITTEN REQUEST. 
 THIS
NOTE IS ISSUED WITH ORIGINAL ISSUE DISCOUNT FOR PURPOSES OF SECTION 1271 ET SEQ. OF THE INTERNAL REVENUE CODE. A HOLDER MAY OBTAIN THE ISSUE PRICE, AMOUNT OF ORIGINAL ISSUE DISCOUNT, ISSUE DATE AND YIELD TO MATURITY FOR THE NOTES BY SUBMITTING A
WRITTEN REQUEST FOR SUCH INFORMATION TO THE COMPANY AT THE FOLLOWING ADDRESS:
[                            ], ATTENTION: CHIEF FINANCIAL OFFICER. 

[Include the following legend for Global Notes only (the “Global Notes Legend”):] 

[THIS NOTE IS A GLOBAL NOTE WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY OR A
NOMINEE THEREOF. THIS NOTE MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A NOTE REGISTERED, AND NO TRANSFER OF THIS NOTE IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITORY OR A NOMINEE THEREOF, EXCEPT IN THE
LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. 
 UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY
TRUST COMPANY (“DTC”), A NEW YORK CORPORATION, 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 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 IN AS MUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 

  
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 THE TRANSFER OF ALL OR ANY PORTION OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE OR
INSTRUMENT IS SUBJECT TO THE RESTRICTIONS AND CONDITIONS SPECIFIED IN AN EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER. ANY TRANSFER OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT THAT IS NOT MADE IN
COMPLIANCE WITH THE RESTRICTIONS AND CONDITIONS SET FORTH IN THE EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER SHALL BE ABSOLUTELY VOID AB INITIO. A COPY OF SUCH EXCHANGE AND PURCHASE AGREEMENT WILL BE FURNISHED WITHOUT
CHARGE BY THE ISSUER TO THE HOLDER HEREOF UPON WRITTEN REQUEST.] 
 [Include the following legend on all Notes that are Restricted Notes (the
“Restricted Notes Legend”):] 
 [THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
(THE “SECURITIES ACT”), OR ANY STATE SECURITIES LAWS. NEITHER THIS NOTE NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH
REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, REGISTRATION. 
 THE HOLDER OF THIS NOTE, BY ITS ACCEPTANCE
HEREOF (1) REPRESENTS THAT (A) IT IS A “QUALIFIED INSTITUTIONAL BUYER” (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) (A “QIB”) OR (B) IT IS NOT A U.S. PERSON, IS NOT ACQUIRING THIS SECURITY FOR THE ACCOUNT OR
BENEFIT OF A U.S. PERSON AND IS ACQUIRING THIS SECURITY IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH REGULATION S UNDER THE SECURITIES ACT AND (2) AGREES THAT IT WILL NOT, WITHIN THE TIME PERIOD REFERRED TO UNDER RULE 144(d)(1) (TAKING INTO
ACCOUNT THE PROVISIONS OF RULE 144(d) UNDER THE SECURITIES ACT, IF APPLICABLE) UNDER THE SECURITIES ACT AS IN EFFECT ON THE DATE OF THE TRANSFER OF THIS SECURITY, OFFER, RESELL OR OTHERWISE TRANSFER THIS SECURITY EXCEPT (A) TO THE COMPANY OR
ANY SUBSIDIARY THEREOF, (B) TO A PERSON WHOM THE HOLDER REASONABLY BELIEVES IS A QIB PURCHASING FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QIB IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT OR AN AVAILABLE EXEMPTION FROM THE
REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, (C) OUTSIDE THE UNITED STATES IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE 904 UNDER THE SECURITIES ACT, (D) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE
SECURITIES ACT (IF AVAILABLE AND PROVIDED THAT PRIOR TO SUCH TRANSFER, THE TRUSTEE IS FURNISHED WITH AN OPINION OF COUNSEL ACCEPTABLE TO THE COMPANY THAT SUCH TRANSFER IS IN COMPLIANCE WITH THE SECURITIES ACT) OR (E) PURSUANT TO AN EFFECTIVE
REGISTRATION 

  
 D-161 

 
STATEMENT UNDER THE SECURITIES ACT AND, IN EACH CASE, IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS, AND (3) AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THIS SECURITY OR AN
INTEREST HEREIN IS TRANSFERRED (OTHER THAN A TRANSFER PURSUANT TO CLAUSE (2)(D) ABOVE) A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. 

IN CONNECTION WITH ANY TRANSFER OF THIS SECURITY OR ANY INTEREST HEREIN WITHIN THE TIME PERIOD REFERRED TO ABOVE, THE HOLDER MUST CHECK THE
APPROPRIATE BOX SET FORTH ON THE REVERSE HEREOF RELATING TO THE MANNER OF SUCH TRANSFER AND SUBMIT THIS CERTIFICATE TO THE TRUSTEE. AS USED HEREIN, THE TERMS “OFFSHORE TRANSACTION,” “UNITED STATES” AND “U.S. PERSON”
HAVE THE MEANINGS GIVEN TO THEM BY RULE 902 OF REGULATION S UNDER THE SECURITIES ACT. 
 THE TRANSFER OF ALL OR ANY PORTION OF THE
SECURITIES REPRESENTED BY THIS CERTIFICATE OR INSTRUMENT IS SUBJECT TO THE RESTRICTIONS AND CONDITIONS SPECIFIED IN AN EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER. ANY TRANSFER OF THE SECURITIES REPRESENTED BY THIS
CERTIFICATE OR INSTRUMENT THAT IS NOT MADE IN COMPLIANCE WITH THE RESTRICTIONS AND CONDITIONS SET FORTH IN THE EXCHANGE AND PURCHASE AGREEMENT AMONG THE ISSUER AND THE INITIAL PURCHASER SHALL BE ABSOLUTELY VOID AB INITIO. A COPY OF SUCH EXCHANGE AND
PURCHASE AGREEMENT WILL BE FURNISHED WITHOUT CHARGE BY THE ISSUER TO THE HOLDER HEREOF UPON WRITTEN REQUEST.] 
 [Include the following legend on all
Notes that are issued pursuant to Regulation S (the “Regulation S Temporary Global Note Legend”):] 

[THE RIGHTS ATTACHING TO THIS REGULATION S TEMPORARY GLOBAL NOTE, AND THE CONDITIONS AND PROCEDURES GOVERNING ITS EXCHANGE FOR DEFINITIVE
NOTES, ARE AS SPECIFIED IN THE INDENTURE. THE HOLDER OF THIS NOTE BY ACCEPTANCE HEREOF ALSO AGREES, REPRESENTS AND WARRANTS THAT IF IT IS A PURCHASER IN A SALE THAT OCCURS OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S OF THE
SECURITIES ACT, IT ACKNOWLEDGES THAT, UNTIL EXPIRATION OF THE “40-DAY DISTRIBUTION COMPLIANCE PERIOD” WITHIN THE MEANING OF RULE 903 OF REGULATION S, ANY OFFER OR SALE OF THIS NOTE SHALL NOT BE MADE BY IT TO A U.S. PERSON TO OR FOR THE
ACCOUNT OR BENEFIT OF A U.S. PERSON WITHIN THE MEANING OF RULE 902(k) UNDER THE SECURITIES ACT.] 
 [To be attached to Global Securities] 

  
 D-162 

  SCHEDULE OF INCREASES OR DECREASES IN GLOBAL SECURITY 

The initial principal amount of this Global Security is $            . The following increases or
decreases in this Global Security have been made: 
  

									
	 Date of

Exchange
	  	Amount of
decrease in
Principal
Amount
of this Global
Security	  	Amount of
increase in
Principal
Amount
of this Global
Security	  	Principal
amount
of this Global
Security
following
such decrease or
increase	  	Signature of
authorized
signatory of
Trustee or
Securities
Custodian
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	

 GEVO, INC. 

10.0% CONVERTIBLE SENIOR SECURED NOTES DUE 2017 

No.
[    ]                                     
                                         
                                         
                                         
             U.S. $[            ] 

[CUSIP NO.             ] 

[ISIN             ] 

Gevo, Inc., a company duly incorporated and validly existing under the laws of the state of Delaware in the United States of America (herein
called the “Company”)), for value received hereby promises to pay to [            ], or registered assigns, the principal sum of
[            ] UNITED STATES DOLLARS (U.S. $[            ]) (which, in the case of a Global Note, amount may from time to time be
increased or decreased by adjustments made on the records of the Trustee, as Custodian for the Depository, in accordance with the rules and procedures of the Depository and in accordance with the below referred Indenture) on the Maturity Date. The
Principal Amount of Physical Notes and interest thereon, as provided on the reverse hereof, shall be payable at the Corporate Trust Office of the Paying Agent and at any other office or agency maintained by the Company for such purpose, upon
surrender of such Physical Notes. The Paying Agent will pay the principal amount of any Global Note and interest thereon, as provided on the reverse hereof, in immediately available funds to The Depository Trust Company or its nominee, as the case
may be, as the registered holder of such Global Note, on each Interest Payment Date, Fundamental Change Purchase Date or other payment date, as the case may be. PIK Interest shall be considered paid on the applicable Interest Payment Date. The
Company shall direct the Trustee on or prior to such date to either issue PIK Notes or increase the Principal Amount of this Note on such date, in either case in amount equal to the amount of the accrued PIK Interest. 

Reference is made to the further provisions of this Note set forth on the reverse hereof, including, without limitation, provisions giving the
Holder the right to convert this Note into shares of Common Stock of the Company and to the ability and obligation of the Company to purchase this Note upon certain events, in each case, on the terms and subject to the limitations

  
 D-163 

 
referred to on the reverse hereof and as more fully specified in the Indenture. Such further provisions shall for all purposes have the same effect as though fully set forth at this place.
Capitalized terms used but not defined herein shall have such meanings as are ascribed to such terms in the Indenture. In the case of any conflict between this Note and the Indenture, the provisions of the Indenture shall control. 

This Note shall not be valid or become obligatory for any purpose until the certificate of authentication hereon shall have been manually
signed by the Trustee or a duly authorized authenticating agent under the Indenture. 
 IN WITNESS WHEREOF, the Company has caused this
instrument to be duly executed. 
  

			
	 GEVO, INC.

		
	 By:
	 	  

	 Name:
	 	  

	 Title:
	 	  

  
 D-164 

 EXHIBIT C 

GEVO, INC. 
 10.0%
Convertible Senior Secured Notes due 2017 
 This Note is one of a duly authorized issue of Notes of the Company, designated as its
10.0% Convertible Senior Secured Notes due 2017 (the “Notes”), issued or to be issued under and pursuant to an Indenture dated as of             , 2014 (the
“Indenture”) among the Company, the guarantors named on the signature pages thereof (the “Guarantors”), and Wilmington Savings Fund Society, FSB, as Trustee (the “Trustee”), to which 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, the Guarantors and the Holders of the Notes. The
Indenture provides that Additional Notes may be issued thereunder, if certain conditions are met. 
 (14) Interest. The Notes will
bear interest at a rate of 10.0% per year. Pursuant to Section 9.03 of the Indenture, in certain circumstances, the Holders of Notes shall be entitled to receive Additional Interest. Interest on the Notes will accrue from, and including,
the Issue Date, or from the most recent date to which interest has been paid or duly provided for. Interest will be payable quarterly in arrears on each Interest Payment Date, beginning with the first Interest Payment Date which occurs after the
Issue Date, in cash; provided, that if no Event of Default has occurred and is continuing under the Notes and the Last Reported Sale Price of the Common Stock on the 10th Trading Day
immediately preceding the relevant Interest Payment Date is more than $1.10 per share (as adjusted for stock splits, combinations, stock dividends and the like), then 50% of the interest will be payable on such Interest Payment Date in cash, and 50%
of the interest will be payable on such Interest Payment Date, either (i) by increasing the Principal Amount of the Notes or (ii) by issuing PIK Notes (“PIK Interest”), at the Company’s option. PIK Interest on the
Notes will be payable by increasing the Principal Amount of the Notes by an amount equal to the amount of PIK Interest for the applicable interest period (rounded up to the nearest whole dollar) (or, if necessary, pursuant to the requirements of The
Depository Trust Company or its nominee, as the case, to authenticate new Global Notes executed by the Company with such increased Principal Amount of the Notes). Following an increase in the Principal Amount of the Notes as a result of a PIK
Payment, the Notes will bear interest on such increased Principal Amount from and after the date of such PIK Payment. 
 Interest will be
paid to the Person in whose name a Note is registered at the Close of Business on the March 15, June 15, September 15 and December 15 (whether or not such date is a Business Day), as the case may be, immediately
preceding the relevant Interest Payment Date. Interest on the Notes will be computed on the basis of a 360-day year composed of twelve 30-day months. 

(15) Ranking and Security. The Notes are secured, equally and ratably, by a senior security in the Collateral pursuant to the Security
Agreement and the Security Documents referred to in the Indenture. The Notes are secured by a pledge of Collateral pursuant to the Security Documents and shall be subject to the Intercreditor Agreement referred to in the Indenture. 

  
 D-165 

 (16) Guarantees. The payment by the Company of the principal of, interest and Additional
Interest, if any, on the Notes is fully and unconditionally guaranteed on a joint and several senior secured basis by each of the Guarantors to the extent set forth in the Indenture. 

(17) No Optional Redemption. The Notes are not redeemable at the option of the Company prior to their stated maturity date. No sinking
fund is provided for the Notes. 
 (18) Purchase at the Option of the Holder Upon a Fundamental Change. Subject to the terms and
conditions of the Indenture, the Company shall become obligated, at the option of the Holder, to repurchase the Notes if a Fundamental Change occurs at any time prior to the Maturity Date at (i) 100% of the Principal Amount together, plus
(ii) accrued and unpaid interest to, but excluding, the Fundamental Change Purchase Date (including but not limited to any outstanding accrued but not yet capitalized PIK Interest and all outstanding capitalized PIK Interest), plus
(iii) the Fundamental Change Make-Whole Payment, which aggregate amount will be paid in cash. 
 (19) Withdrawal of Fundamental
Change Purchase Notice. Holders have the right to withdraw, in whole or in part, any Fundamental Change Purchase Notice by delivering to the Paying Agent a written notice of withdrawal in accordance with the provisions of the Indenture. The
right to withdraw the Fundamental Change Purchase Notice will terminate at the Close of Business on the Business Day immediately preceding the relevant Fundamental Change Purchase Date. 

(20) Payment of Fundamental Change Purchase Price. If money sufficient to pay the Fundamental Change Purchase Price of all Notes or
portions thereof to be purchased on a Fundamental Change Purchase Date is deposited with the Paying Agent on the Fundamental Change Purchase Date, such Notes will cease to be outstanding and interest will cease to accrue on such Notes (or portions
thereof) immediately after the Close of Business on such Fundamental Change Purchase Date, and the Holder thereof shall have no other rights as such (other than the right to receive the Fundamental Change Purchase Price, upon surrender of such
Note). 
 (21) Conversion. Subject to and upon compliance with the provisions of the Indenture (including without limitation the
conditions of conversion of this Note set forth in Article 7 thereof), the Holder hereof has the right, at its option, to convert the Principal Amount hereof or any portion of such principal which is at least $1,000 into shares of Common Stock at
the Applicable Conversion Rate. The Conversion Rate is initially 0.8633 shares of Common Stock per $1 Principal Amount of Notes (equivalent to an initial Conversion Price of approximately $1.1584), subject to adjustment in certain events described
in the Indenture. Upon conversion, the Company will deliver shares of Common Stock and the Voluntary Conversion Make-Whole Payment, all as set forth in the Indenture (which may be paid in cash or shares of Common Stock). No fractional shares will be
issued upon any conversion, but a payment in cash will be made, as provided in the Indenture, in respect of any fraction of a share which would otherwise be issuable upon the surrender of any Notes for conversion. Notes in respect of which a Holder

  
 D-166 

 
is exercising its right to require repurchase on a Fundamental Change Purchase Date may be converted only if such Holder withdraws the related election to exercise such right in accordance with
the terms of the Indenture. Subject to and upon compliance with the provisions of the Indenture (including without limitation the conditions of conversion of this Note set forth in Article 7 thereof), the Company may elect to require the Holder to
convert some or all of the Notes if a Conversion Event occurs. Upon such conversion, the Company will deliver shares of Common Stock and the Conversion Event Make-Whole Payment, all as set forth in the Indenture (which may be paid in cash or shares
of Common Stock). 
 In the event of a deposit or withdrawal of an interest in this Note, including an exchange, transfer, repurchase or
conversion of this Note in part only, the Trustee, as custodian of the Depository, shall make an adjustment on its records to reflect such deposit or withdrawal in accordance with the rules and procedures of the Depository. 

(22) Acceleration of Maturity. Subject to certain exceptions in the Indenture, if an Event of Default shall occur and be continuing,
the Principal Amount plus interest through such date on all the Notes may be declared due and payable in the manner and with the effect provided in the Indenture. 

(23) Supplemental Indentures with Consent of Holders; Waiver of Past Defaults. The Indenture permits, with certain exceptions as
therein provided, the amendment thereof and the modification of the rights and obligations of the Company and the rights of the Holders of the Notes under the Indenture at any time by the Company, the Guarantors and the Trustee with the consent of
the Requisite Holders. The Indenture also contains provisions permitting the Holders of specified percentages in aggregate Principal Amount of the outstanding Notes, on behalf of the Holders of all the Notes, to waive compliance by the Company with
certain provisions of the Indenture and certain past Defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of any provision of or applicable to this Note shall be conclusive and binding upon such Holder and
upon all future Holders of this Note and of any Note issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Note. 

(24) Registration of Transfer and Exchange. As provided in the Indenture and subject to certain limitations therein set forth, the
transfer of this Note is registrable in the Register, upon surrender of this Note for registration of transfer at the office or agency of the Company in the United States, duly endorsed by, or accompanied by a written instrument of transfer in form
satisfactory to the Company and the Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Notes, of authorized denominations and for the same aggregate Principal Amount, will be
issued to the designated transferee or transferees. 
 No service charge shall be made for any such registration of transfer or exchange,
but the Company and the Registrar may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith. 

Prior to due presentment of this Note for registration of transfer, the Company, the Guarantors, the Trustee and the Registrar and any agent
of the Company, the Guarantors or the 

  
 D-167 

 
Trustee may treat the Person in whose name this Note is registered as the owner hereof for all purposes, whether or not this Note be overdue, and neither the Company, the Trustee nor any such
agent shall be affected by notice to the contrary. 
 (25) Denominations. The Notes are issuable only in registered form in minimum
denominations of $1,000, and any PIK Notes in minimum denominations of $1.00, as provided in the Indenture and subject to certain limitations therein set forth. Notes are exchangeable for a like aggregate Principal Amount of Notes of a different
authorized denomination, as requested by the Holder surrendering the same. 
 (26) CUSIP Numbers. Pursuant to a recommendation
promulgated by the Committee on Uniform Note Identification Procedures, the Company has caused CUSIP numbers to be printed on the Notes and has directed the Trustee to use CUSIP numbers in notices of redemption as a convenience to Holders of Notes.
No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed herein. 

This Note shall be governed by and construed in accordance with the laws of the State of New York. 

All terms used in this Note that are defined in the Indenture shall have the meanings assigned to them in the Indenture. 

  
 D-168 

 ASSIGNMENT FORM 

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                      as agent to transfer this Note on the books of the Company, with full power of substitution in
the premises. 
 In connection with any transfer of the within Note, the undersigned confirms that such Note is being transferred: 

 

	 	 ̈	To Gevo, Inc. or a subsidiary thereof; or 

  

	 	 ̈	Pursuant to a registration statement that has become or been declared effective under the Securities Act of 1933, as amended; or 

  

	 	 ̈	Pursuant to and in compliance with Rule 144A under the Securities Act of 1933, as amended; or 

  

	 	 ̈	Pursuant to and in compliance with Regulation S under the Securities Act of 1933, as amended; or 

  

	 	 ̈	Pursuant to and in compliance with Rule 144 under the Securities Act of 1933, as amended, or any other available exemption from the registration requirements of the Securities Act of 1933, as amended. 

TO BE COMPLETED BY PURCHASER IF THE THIRD BOX ABOVE IS CHECKED 

The undersigned represents and warrants that it is purchasing this Note for its own account or an account with respect to which it exercises
sole investment discretion and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities Act and is aware that the sale to it is being made in reliance on Rule 144A and
acknowledges that it has received such information regarding the Company as the undersigned has requested pursuant to Rule 144A or has determined not to request such information and that it is aware that the transferor is relying upon the
undersigned’s foregoing representations in order to claim the exemption from registration provided by Rule 144A. 
  

									
	Date:	 	  
	 		 	Signed:	 	  

 Unless one of the above boxes is checked, the Trustee will refuse to register any of the Notes evidenced by
this certificate in the name of any Person other than the registered Holder thereof, provided that if the third, fourth or fifth box is checked, the Company or the Trustee may require, prior to registering any such transfer of the Notes, in
its sole discretion, such legal opinions, certifications and other information as the Company or the Trustee may reasonably request 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. 

  
 D-169 

 If none of the foregoing boxes is checked, the Trustee or Registrar shall not be obligated to
register this Note in the name of any Person other than the Holder hereof unless and until the conditions to any such transfer of registration set forth herein and in Section 3.11 of the Indenture shall have been satisfied. 

 

			
	Dated:	 	  

	
	  

 

	
	  

	Signature(s)
	
	  

	Signature Guarantee

 Signature(s) must 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 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. 

  
 D-170 

 CONVERSION NOTICE 

If you want to convert this Note into Common Stock of the Company, check the box:  ̈ 

To convert only part of this Note, state the Principal Amount to be converted: 

$                     

If you want the share certificate, if any, made out in another Person’s name, fill in the form below: 

 

	
	  

	(Insert other Person’s social security or tax ID no.)
	
	  

	(Print or type other Person’s name, address and zip code)

 By electing to convert this Note into Common Stock of the Company, you represent as of the date hereof that, after giving
effect to the conversion of this Note pursuant to this Conversion Notice, you will not beneficially own (as defined in Rule 13d-3 under the Exchange Act), more than 4.99% or 9.99% (as applicable) of the Common Stock of the Company. 

 

			
	Dated:	 	  

  

	
	  

	Signature(s)

  

			
	Signature Guarantee:	 	  

 Note: Signatures must be guaranteed by an “eligible guarantor institution” meeting the requirements of the
Registrar, which requirements include membership or participation in the Security Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be determined by the Registrar in addition to,
or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. 

  
 D-171 

 [Form of Fundamental Change Repurchase Notice] 

To: Wilmington Savings Fund Society, FSB 
 500 Delaware Ave.,
11th Floor 
 Wilmington, DE 19801 
 Attn: Corporate Trust
– Gevo 10.0% Convertible Senior Secured Notes 
 Facsimile: (302) 421-9137 

The undersigned registered owner of this Note hereby acknowledges receipt of a notice from Gevo, Inc. (the “Company”) as to
the occurrence of a Fundamental Change with respect to the Company and specifying the Fundamental Change Purchase Date and requests and instructs the Company to pay to the registered holder hereof in accordance with the applicable provisions of the
Indenture referred to in this Note (1) 100% of the Principal Amount of this Note, or the portion thereof below designated, plus (2) if such Fundamental Change Purchase Date does not fall during the period after a Regular Record Date and on
or prior to the corresponding Interest Payment Date, accrued and unpaid interest, if any, thereon to, but excluding, such Fundamental Change Purchase Date, plus (3) an amount equal to the aggregate amount of interest payments that would have
been payable on this Note from the last day through which interest was paid through and including the Maturity Date (determined as if such repurchase did not occur) 

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. 

  
 D-172 

  
  

GEVO, INC. 
 and 

the Guarantors named herein 
  

 
 10.0%
CONVERTIBLE SENIOR SECURED NOTES DUE 2017 
  

 
 FORM OF
SUPPLEMENTAL INDENTURE 
 DATED AS OF
                ,              

 
  

WILMINGTON SAVINGS FUND SOCIETY, FSB, 

As Trustee 
  

 
  

 

  
 D-173 

 This SUPPLEMENTAL INDENTURE, dated as of
            ,             (this “Supplemental Indenture”) is among Gevo, Inc., a Delaware
corporation (the “Company”), [            ] (the “Guaranteeing Subsidiary”), which is a subsidiary of the Company, each of the existing Guarantors
(as defined in the Indenture referred to below) and Wilmington Savings Fund Society, FSB, a national banking association, as Trustee. 

RECITALS 
 WHEREAS, the Company,
the initial Guarantors, the Trustee and Wilmington Savings Fund Society, FSB, as Collateral Trustee, entered into an Indenture, dated as of             , 2014 (as heretofore amended,
supplemented or otherwise modified, the “Indenture”), pursuant to which the Company may issue 10.0% Convertible Senior Secured Notes due 2017 (the “Notes”); 

WHEREAS, the Indenture provides that under certain circumstances the Guaranteeing Subsidiary shall execute and deliver to the Trustee a
supplemental indenture pursuant to which the Guaranteeing Subsidiary shall become a Guarantor (as defined in the Indenture); 
 WHEREAS,
Section 14.01(iii) of the Indenture provides that the Company, the Guarantors and the Trustee may amend or supplement the Indenture in order to add any additional Guarantor with respect to the Notes, without the consent of the Holders of the
Notes; and 
 WHEREAS, all acts and things prescribed by the Indenture, by law and by the Certificate of Incorporation and the Bylaws (or
comparable constituent documents) of the Company, of the Guarantors and of the Trustee necessary to make this Supplemental Indenture a valid instrument legally binding on the Company, the Guarantors and the Trustee, in accordance with its terms,
have been duly done and performed; 
 NOW, THEREFORE, to comply with the provisions of the Indenture and in consideration of the above
premises, the Company, the Guaranteeing Subsidiary, the other Guarantors and the Trustee covenant and agree for the equal and proportionate benefit of the respective Holders of the Notes as follows: 

Section 1. Capitalized Terms. Capitalized terms used herein without definition shall have the meanings ascribed to them in the Indenture. 

Section 2. Relation to Indenture. This Supplemental Indenture is supplemental to the Indenture and does and shall be deemed to form a part of, and
shall be construed in connection with and as part of, the Indenture for any and all purposes. 
 Section 3. Effectiveness of Supplemental
Indenture. This Supplemental Indenture shall become effective immediately upon its execution and delivery by each of the Company, the Guaranteeing Subsidiary, the other Guarantors and the Trustee. 

Section 4. Agreement to Guarantee. The Guaranteeing Subsidiary hereby agrees, by its execution of this Supplemental Indenture, to be bound by the
provisions of the Indenture applicable to Guarantors to the extent provided for in Article 15 thereof. 

  
 D-174 

 Section 5. Ratification of Obligations. Except as specifically modified herein, the Indenture and the
Notes are in all respects ratified and confirmed (mutatis mutandis) and shall remain in full force and effect in accordance with their terms. 

Section 6. The Trustee and Collateral Trustee. Except as otherwise expressly provided herein, no duties, responsibilities or liabilities are
assumed, or shall be construed to be assumed, by the Trustee or the Collateral Trustee by reason of this Supplemental Indenture. This Supplemental Indenture is executed and accepted by the Trustee subject to all the terms and conditions set forth in
the Indenture with the same force and effect as if those terms and conditions were repeated at length herein and made applicable to the Trustee with respect hereto. Neither the Trustee nor the Collateral Trustee shall not be responsible for the
recitals contained herein, all of which recitals are made by the other parties to this Supplemental Indenture. 
 Section 7. Governing Law. THIS
SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 
 Section 8. Counterparts.
The parties may sign any number of copies of this Supplemental Indenture. Each signed copy shall be an original, but all of such executed copies together shall represent the same agreement. 

[Signatures on following pages] 

  
 D-175 

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

			
	COMPANY
	
	GEVO, INC.
		
	By:	 	  

	Name:	 	
	Title:	 	
	
	GUARANTEEING SUBSIDIARY
	
	[                                    
            ]
		
	By:	 	  

	Name:	 	
	Title:	 	
	
	EXISTING GUARANTORS1
	
	
	
	TRUSTEE
	
	 WILMINGTON SAVINGS FUND SOCIETY, FSB, AS

TRUSTEE

		
	By:	 	  

	Name:	 	
	Title:	 	

  

	1 	Insert signature blocks for each of the Guarantors existing at the time of execution of this Supplemental Indenture. 

  
 D-176EX-4.1

 Exhibit 4.1 

NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE
SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED
BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY. THIS SECURITY AND THE SECURITIES ISSUABLE UPON EXERCISE OF THIS SECURITY MAY BE PLEDGED IN CONNECTION WITH A BONA
FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES. 
 COMMON STOCK PURCHASE WARRANT 

OXIGENE, INC. 
  

			
	Warrant Shares:             	  	Initial Exercise Date: May     , 2014

 THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received,
            or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or
after the date hereof (the “Initial Exercise Date”) and on or prior to the close of business on the five year and three month anniversary of the Initial Exercise Date (the “Termination Date”) but not thereafter, to
subscribe for and purchase from OXiGENE, Inc., a Delaware corporation (the “Company”), up to             shares (as subject to adjustment hereunder, the “Warrant
Shares”) of Common Stock. The purchase price of one share of Common Stock under this Warrant shall be equal to the Exercise Price, as defined in Section 2(b). 

Section 1. Definitions. Capitalized terms used and not otherwise defined herein shall have the meanings set forth in that
certain Securities Purchase Agreement (the “Purchase Agreement”), dated May 22, 2014, among the Company and the purchasers signatory thereto. 

Section 2. Exercise. 

a) Exercise of Warrant. Exercise of the purchase rights represented by this Warrant may be made, in whole or in part, at
any time or times on or after the Initial Exercise Date and on or before the Termination Date by delivery to the Company (or such other office or agency of the Company as it may designate by notice in writing to the registered Holder at the address
of the Holder appearing on the books of the 

  
 1 

 
Company) of a duly executed facsimile copy of the Notice of Exercise form annexed hereto and within three (3) Trading Days of the date said Notice of Exercise is received by the Company, the
Company shall have received payment of the aggregate Exercise Price of the shares thereby purchased by wire transfer or cashier’s check drawn on a United States bank or, if available, pursuant to the cashless exercise procedure specified in
Section 2(c) below. No ink-original Notice of Exercise shall be required, nor shall any medallion guarantee (or other type of guarantee or notarization) of any Notice of Exercise form be required. Notwithstanding anything herein to the
contrary, the Holder shall not be required to physically surrender this Warrant to the Company until the Holder has purchased all of the Warrant Shares available hereunder and the Warrant has been exercised in full, in which case, the Holder shall
surrender this Warrant to the Company for cancellation within three (3) Trading Days of the date the final Notice of Exercise is received by the Company. Partial exercises of this Warrant resulting in purchases of a portion of the total number
of Warrant Shares available hereunder shall have the effect of lowering the outstanding number of Warrant Shares purchasable hereunder in an amount equal to the applicable number of Warrant Shares purchased. The Holder and the Company shall maintain
records showing the number of Warrant Shares purchased and the date of such purchases. The Company shall deliver any objection to any Notice of Exercise Form within one (1) Business Day of receipt of such notice. The Holder and any assignee,
by acceptance of this Warrant, acknowledge and agree that, by reason of the provisions of this paragraph, following the purchase of a portion of the Warrant Shares hereunder, the number of Warrant Shares available for purchase hereunder at any given
time may be less than the amount stated on the face hereof. 
 b) Exercise Price. The exercise price per share of
the Common Stock under this Warrant shall be $2.90, subject to adjustment hereunder (the “Exercise Price”). 

c) Cashless Exercise. If, and only if, at any time after the 6 month anniversary of the Initial Exercise Date, there is
no effective registration statement registering, or no current prospectus available for, the resale of the Warrant Shares by the Holder, then this Warrant may also be exercised, in whole or in part, at such time by means of a “cashless
exercise” in which the Holder shall be entitled to receive a number of Warrant Shares equal to the quotient obtained by dividing [(A-B) (X)] by (A), where: 
  

	 	(A) = 	the VWAP on the Trading Day immediately preceding the date on which Holder elects to exercise this Warrant by means of a “cashless exercise,” as set forth in the applicable Notice of Exercise;

  

	 	(B) = 	the Exercise Price of this Warrant, as adjusted hereunder; and 

  

	 	(X) = 	the number of Warrant Shares that would be issuable upon exercise of this Warrant in accordance with the terms of this Warrant if such exercise were by means of a cash exercise rather than a cashless exercise.

 In no event will the Company be required to issue cash to the Holder upon an exercise of the Warrant pursuant to this
Section 2(c), provided, however, that this shall in no way limit a Holder’s remedies herein if the Company fails to timely deliver Warrant Shares on exercise. 

  
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 d) Mechanics of Exercise. 

i. Delivery of Warrant Shares Upon Exercise. Warrant Shares purchased hereunder shall be transmitted by the Transfer
Agent to the Holder by crediting the account of the Holder’s prime broker with The Depository Trust Company through its Deposit or Withdrawal at Custodian system (“DWAC”) if the Company is then a participant in such system and
either (A) there is an effective registration statement permitting the issuance of the Warrant Shares to or resale of the Warrant Shares by the Holder or (B) the shares are eligible for resale by the Holder without volume or manner-of-sale
limitations pursuant to Rule 144, and otherwise by physical delivery to the address specified by the Holder in the Notice of Exercise by the end of the day on the date that is three (3) Trading Days after the receipt by the Company of the
Notice of Exercise (such date, the “Warrant Share Delivery Date”). The Warrant Shares shall be deemed to have been issued, and Holder or any other person so designated to be named therein shall be deemed to have become a holder of
record of such shares for all purposes, as of the date the Warrant has been exercised, with payment to the Company of the Exercise Price (or by cashless exercise, if permitted) and all taxes required to be paid by the Holder, if any, pursuant to
Section 2(d)(vi) prior to the issuance of such shares, having been paid. If the Company fails for any reason to deliver to the Holder the Warrant Shares subject to a Notice of Exercise by the Warrant Share Delivery Date, the Company shall pay
to the Holder, in cash, as liquidated damages and not as a penalty, for each $1,000 of Warrant Shares subject to such exercise (based on the VWAP of the Common Stock on the date of the applicable Notice of Exercise), $10 per Trading Day (increasing
to $20 per Trading Day on the fifth Trading Day after such liquidated damages begin to accrue) for each Trading Day after such Warrant Share Delivery Date until such Warrant Shares are delivered or Holder rescinds such exercise. 

ii. Delivery of New Warrants Upon Exercise. If this Warrant shall have been exercised in part, the Company shall, at the
request of a Holder and upon surrender of this Warrant, at the time of delivery of the Warrant Shares, deliver to the Holder a new Warrant evidencing the rights of the Holder to purchase the unpurchased Warrant Shares called for by this Warrant,
which new Warrant shall in all other respects be identical with this Warrant. 
 iii. Rescission Rights. If the
Company fails to cause the Transfer Agent to transmit to the Holder the Warrant Shares pursuant to Section 2(d)(i) by the Warrant Share Delivery Date, then the Holder will have the right to rescind such exercise. 

  
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 iv. Compensation for Buy-In on Failure to Timely Deliver Warrant Shares Upon
Exercise. In addition to any other rights available to the Holder, if the Company fails to cause the Transfer Agent to transmit to the Holder the Warrant Shares pursuant to an exercise on or before the Warrant Share Delivery Date, and if after
such date the Holder is required by its broker to purchase (in an open market transaction or otherwise) or the Holder’s brokerage firm otherwise purchases, shares of Common Stock to deliver in satisfaction of a sale by the Holder of the Warrant
Shares which the Holder anticipated receiving upon such exercise (a “Buy-In”), then the Company shall (A) pay in cash to the Holder the amount, if any, by which (x) the Holder’s total purchase price (including
brokerage commissions, if any) for the shares of Common Stock so purchased exceeds (y) the amount obtained by multiplying (1) the number of Warrant Shares that the Company was required to deliver to the Holder in connection with the
exercise at issue times (2) the price at which the sell order giving rise to such purchase obligation was executed, and (B) at the option of the Holder, either reinstate the portion of the Warrant and equivalent number of Warrant Shares
for which such exercise was not honored (in which case such exercise shall be deemed rescinded) or deliver to the Holder the number of shares of Common Stock that would have been issued had the Company timely complied with its exercise and delivery
obligations hereunder. For example, if the Holder purchases Common Stock having a total purchase price of $11,000 to cover a Buy-In with respect to an attempted exercise of shares of Common Stock with an aggregate sale price giving rise to such
purchase obligation of $10,000, under clause (A) of the immediately preceding sentence the Company shall be required to pay the Holder $1,000. The Holder shall provide the Company written notice indicating the amounts payable to the Holder in
respect of the Buy-In and, upon request of the Company, evidence of the amount of such loss. Nothing herein shall limit a Holder’s right to pursue any other remedies available to it hereunder, at law or in equity including, without limitation,
a decree of specific performance and/or injunctive relief with respect to the Company’s failure to timely deliver shares of Common Stock upon exercise of the Warrant as required pursuant to the terms hereof. 

v. No Fractional Shares or Scrip. No fractional shares or scrip representing fractional shares shall be issued upon the
exercise of this Warrant. As to any fraction of a share which the Holder would otherwise be entitled to purchase upon such exercise, the Company shall, at its election, either pay a cash adjustment in respect of such final fraction in an amount
equal to such fraction multiplied by the Exercise Price or round up to the next whole share. 

  
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 vi. Charges, Taxes and Expenses. Issuance of Warrant Shares shall be made
without charge to the Holder for any issue or transfer tax or other incidental expense in respect of the issuance of Warrant Shares, all of which taxes and expenses shall be paid by the Company, and such Warrant Shares shall be issued in the name of
the Holder or in such name or names as may be directed by the Holder; provided, however, that in the event that Warrant Shares are to be issued in a name other than the name of the Holder, this Warrant when surrendered for exercise
shall be accompanied by the Assignment Form attached hereto duly executed by the Holder and the Company may require, as a condition thereto, the payment of a sum sufficient to reimburse it for any transfer tax incidental thereto. The Company shall
pay all Transfer Agent fees required for same-day processing of any Notice of Exercise. 
 vii. Closing of Books. The
Company will not close its stockholder books or records in any manner which prevents the timely exercise of this Warrant, pursuant to the terms hereof. 

e) Holder’s Exercise Limitations. The Company shall not effect any exercise of this Warrant, and a Holder shall not
have the right to exercise any portion of this Warrant, pursuant to Section 2 or otherwise, to the extent that after giving effect to such issuance after exercise as set forth on the applicable Notice of Exercise, the Holder (together with the
Holder’s Affiliates, and any other Persons acting as a group together with the Holder or any of the Holder’s Affiliates), would beneficially own in excess of the Beneficial Ownership Limitation (as defined below). For purposes of the
foregoing sentence, the number of shares of Common Stock beneficially owned by the Holder and its Affiliates shall include the number of shares of Common Stock issuable upon exercise of this Warrant with respect to which such determination is being
made, but shall exclude the number of shares of Common Stock which would be issuable upon (i) exercise of the remaining, nonexercised portion of this Warrant beneficially owned by the Holder or any of its Affiliates and (ii) exercise or
conversion of the unexercised or nonconverted portion of any other securities of the Company (including, without limitation, any other Common Stock Equivalents) subject to a limitation on conversion or exercise analogous to the limitation contained
herein beneficially owned by the Holder or any of its Affiliates. Except as set forth in the preceding sentence, for purposes of this Section 2(e), beneficial ownership shall be calculated in accordance with Section 13(d) of the
Exchange Act and the rules and regulations promulgated thereunder, it being acknowledged by the Holder that the Company is not representing to the Holder that such calculation is in compliance with Section 13(d) of the Exchange Act and the
Holder is solely responsible for any schedules required to be filed in accordance therewith. To the extent that the limitation contained in this Section 2(e) applies, the determination of whether this Warrant is exercisable (in relation to
other securities owned by the Holder together with any Affiliates) and of which portion of this Warrant is exercisable shall be in the sole discretion of the Holder, and the submission of a Notice of Exercise shall be deemed to be the Holder’s

  
 5 

 
determination of whether this Warrant is exercisable (in relation to other securities owned by the Holder together with any Affiliates) and of which portion of this Warrant is exercisable, in
each case subject to the Beneficial Ownership Limitation, and the Company shall have no obligation to verify or confirm the accuracy of such determination and shall have no liability for exercise of the Warrant that are not in compliance with the
Beneficial Ownership Limitation. In addition, a determination as to any group status as contemplated above shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. For
purposes of this Section 2(e), in determining the number of outstanding shares of Common Stock, a Holder may rely on the number of outstanding shares of Common Stock as reflected in (A) the Company’s most recent periodic or annual
report filed with the Commission, as the case may be, (B) a more recent public announcement by the Company or (C) a more recent written notice by the Company or the Transfer Agent setting forth the number of shares of Common Stock
outstanding. Upon the written or oral request of a Holder, the Company shall within two Trading Days confirm in writing to the Holder the number of shares of Common Stock then outstanding. In any case, the number of outstanding shares of
Common Stock shall be determined after giving effect to the conversion or exercise of securities of the Company, including this Warrant, by the Holder or its Affiliates since the date as of which such number of outstanding shares of Common Stock was
reported. The “Beneficial Ownership Limitation” shall be [4.99%/9.99%]1 of the number of shares of the Common Stock outstanding immediately after giving effect to the issuance of
shares of Common Stock issuable upon exercise of this Warrant. The Holder, upon not less than 61 days’ prior notice to the Company, may increase or decrease the Beneficial Ownership Limitation provisions of this Section 2(e), provided that
the Beneficial Ownership Limitation in no event exceeds 9.99% of the number of shares of the Common Stock outstanding immediately after giving effect to the issuance of shares of Common Stock upon exercise of this Warrant held by the Holder and the
provisions of this Section 2(e) shall continue to apply. Any such increase or decrease will not be effective until the 61st day after such notice is delivered to the Company. The provisions
of this paragraph shall be construed and implemented in a manner otherwise than in strict conformity with the terms of this Section 2(e) to correct this paragraph (or any portion hereof) which may be defective or inconsistent with the intended
Beneficial Ownership Limitation herein contained or to make changes or supplements necessary or desirable to properly give effect to such limitation. The limitations contained in this paragraph shall apply to a successor holder of this Warrant. 

Section 3. Certain Adjustments. 

a) Stock Dividends and Splits. If the Company, at any time while this Warrant is outstanding: (i) pays a stock
dividend or otherwise makes a distribution or distributions on shares of its Common Stock or any other equity or equity equivalent securities payable in shares of Common Stock (which, for avoidance of doubt, shall not 

 
  

	1 	 To be determined by the Holder prior to issuance. 

  
 6 

 
include any shares of Common Stock issued by the Company upon exercise of this Warrant), (ii) subdivides outstanding shares of Common Stock into a larger number of shares,
(iii) combines (including by way of reverse stock split) outstanding shares of Common Stock into a smaller number of shares or (iv) issues by reclassification of shares of the Common Stock any shares of capital stock of the Company, then
in each case the Exercise Price shall be multiplied by a fraction of which the numerator shall be the number of shares of Common Stock (excluding treasury shares, if any) outstanding immediately before such event and of which the denominator shall
be the number of shares of Common Stock outstanding immediately after such event, and the number of shares issuable upon exercise of this Warrant shall be proportionately adjusted such that the aggregate Exercise Price of this Warrant shall remain
unchanged. Any adjustment made pursuant to this Section 3(a) shall become effective immediately after the record date for the determination of stockholders entitled to receive such dividend or distribution and shall become effective immediately
after the effective date in the case of a subdivision, combination or re-classification. 

b) [RESERVED] 

c) Subsequent Rights Offerings. In addition to any adjustments pursuant to Section 3(a) above, if at any time the
Company grants, issues or sells any Common Stock Equivalents or rights to purchase stock, warrants, securities or other property pro rata to the record holders of any class of shares of Common Stock (the “Purchase Rights”), then the
Holder will be entitled to acquire, upon the terms applicable to such Purchase Rights, the aggregate Purchase Rights which the Holder could have acquired if the Holder had held the number of shares of Common Stock acquirable upon complete exercise
of this Warrant (without regard to any limitations on exercise hereof, including without limitation, the Beneficial Ownership Limitation) immediately before the date on which a record is taken for the grant, issuance or sale of such Purchase Rights,
or, if no such record is taken, the date as of which the record holders of shares of Common Stock are to be determined for the grant, issue or sale of such Purchase Rights (provided, however, to the extent that the Holder’s right to participate
in any such Purchase Right would result in the Holder exceeding the Beneficial Ownership Limitation, then the Holder shall not be entitled to participate in such Purchase Right to such extent (or beneficial ownership of such shares of Common Stock
as a result of such Purchase Right to such extent) and such Purchase Right to such extent shall be held in abeyance for the Holder until such time, if ever, as its right thereto would not result in the Holder exceeding the Beneficial Ownership
Limitation). 
 d) Pro Rata Distributions. During such time as this Warrant is outstanding, if the Company shall
declare or make any dividend or other distribution of its assets (or rights to acquire its assets) to holders of shares of Common Stock, by way of return of capital or otherwise (including, without limitation, any distribution of cash, stock or
other securities, property or options by way of a dividend, spin off, reclassification, corporate rearrangement, scheme of arrangement or other similar transaction) (a “Distribution”), at any time after the issuance of this Warrant,
then, in each such case, the Holder shall be entitled to participate in such Distribution to the same extent that the Holder would have participated therein if the Holder had held the number of shares of Common Stock

  
 7 

 
acquirable upon complete exercise of this Warrant (without regard to any limitations on exercise hereof, including without limitation, the Beneficial Ownership Limitation) immediately before the
date of which a record is taken for such Distribution, or, if no such record is taken, the date as of which the record holders of shares of Common Stock are to be determined for the participation in such Distribution (provided,
however, to the extent that the Holder’s right to participate in any such Distribution would result in the Holder exceeding the Beneficial Ownership Limitation, then the Holder shall not be entitled to participate in such Distribution to
such extent (or in the beneficial ownership of any shares of Common Stock as a result of such Distribution to such extent) and the portion of such Distribution shall be held in abeyance for the benefit of the Holder until such time, if ever, as its
right thereto would not result in the Holder exceeding the Beneficial Ownership Limitation). To the extent that this Warrant has not been partially or completed exercised at the time of such Distribution, such portion of the Distribution shall be
held in abeyance for the benefit of the Holder until the Holder has exercised this Warrant. 
 e) Fundamental
Transaction. If, at any time while this Warrant is outstanding, (i) the Company, directly or indirectly, in one or more related transactions effects any merger or consolidation of the Company with or into another Person, (ii) the
Company, directly or indirectly, effects any sale, lease, license, assignment, transfer, conveyance or other disposition of all or substantially all of its assets in one or a series of related transactions, (iii) any, direct or indirect,
purchase offer, tender offer or exchange offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to sell, tender or exchange their shares for other securities, cash or property and has
been accepted by the holders of 50% or more of the outstanding Common Stock, (iv) the Company, directly or indirectly, in one or more related transactions effects any reclassification, reorganization or recapitalization of the Common Stock or
any compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property, or (v) the Company, directly or indirectly, in one or more related transactions consummates a
stock or share purchase agreement or other business combination (including, without limitation, a reorganization, recapitalization, spin-off or scheme of arrangement) with another Person or group of Persons whereby such other Person or group
acquires more than 50% of the outstanding shares of Common Stock (not including any shares of Common Stock held by the other Person or other Persons making or party to, or associated or affiliated with the other Persons making or party to, such
stock or share purchase agreement or other business combination) (each a “Fundamental Transaction”), then, upon any subsequent exercise of this Warrant, the Holder shall have the right to receive, for each Warrant Share that would
have been issuable upon such exercise immediately prior to the occurrence of such Fundamental Transaction, at the option of the Holder (without regard to any limitation in Section 2(e) on the exercise of this Warrant), the number of shares of
Common Stock of the successor or acquiring corporation or of the Company, if it is the surviving corporation, and any additional consideration (the “Alternate Consideration”) receivable as a result of such Fundamental Transaction by
a holder of the number of shares of Common Stock for which this Warrant is exercisable immediately prior to such Fundamental Transaction (without regard to any limitation in Section 2(e) on the exercise of this Warrant). For purposes of any
such exercise, the determination of the Exercise 

  
 8 

 
Price shall be appropriately adjusted to apply to such Alternate Consideration based on the amount of Alternate Consideration issuable in respect of one share of Common Stock in such Fundamental
Transaction, and the Company shall apportion the Exercise Price among the Alternate Consideration in a reasonable manner reflecting the relative value of any different components of the Alternate Consideration. If holders of Common Stock are given
any choice as to the securities, cash or property to be received in a Fundamental Transaction, then the Holder shall be given the same choice as to the Alternate Consideration it receives upon any exercise of this Warrant following such Fundamental
Transaction. The Company shall cause any successor entity in a Fundamental Transaction in which the Company is not the survivor (the “Successor Entity”) to assume in writing all of the obligations of the Company under this Warrant
and the other Transaction Documents in accordance with the provisions of this Section 3(e) pursuant to written agreements in form and substance reasonably satisfactory to the Holder and approved by the Holder (without unreasonable delay) prior
to such Fundamental Transaction and shall, at the option of the Holder, deliver to the Holder in exchange for this Warrant a security of the Successor Entity evidenced by a written instrument substantially similar in form and substance to this
Warrant which is exercisable for a corresponding number of shares of capital stock of such Successor Entity (or its parent entity) equivalent to the shares of Common Stock acquirable and receivable upon exercise of this Warrant (without regard to
any limitations on the exercise of this Warrant) prior to such Fundamental Transaction, and with an exercise price which applies the exercise price hereunder to such shares of capital stock (but taking into account the relative value of the shares
of Common Stock pursuant to such Fundamental Transaction and the value of such shares of capital stock, such number of shares of capital stock and such exercise price being for the purpose of protecting the economic value of this Warrant immediately
prior to the consummation of such Fundamental Transaction), and which is reasonably satisfactory in form and substance to the Holder. Upon the occurrence of any such Fundamental Transaction, the Successor Entity shall succeed to, and be substituted
for (so that from and after the date of such Fundamental Transaction, the provisions of this Warrant and the other Transaction Documents referring to the “Company” shall refer instead to the Successor Entity), and may exercise every right
and power of the Company and shall assume all of the obligations of the Company under this Warrant and the other Transaction Documents with the same effect as if such Successor Entity had been named as the Company herein. 

f) Calculations. All calculations under this Section 3 shall be made to the nearest cent or the nearest 1/100th of
a share, as the case may be. For purposes of this Section 3, the number of shares of Common Stock deemed to be issued and outstanding as of a given date shall be the sum of the number of shares of Common Stock (excluding treasury shares, if
any) issued and outstanding. 
 g) Notice to Holder. 

i. Adjustment to Exercise Price. Whenever the Exercise Price is adjusted pursuant to any provision of this
Section 3, the Company shall promptly mail to the Holder a notice setting forth the Exercise Price after such adjustment and any resulting adjustment to the number of Warrant Shares and setting forth a brief statement of the facts requiring
such adjustment. 

  
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 ii. Notice to Allow Exercise by Holder. If, prior to the earlier of
(i) the Termination Date and (ii) the date on which this Warrant has been exercised in full, (A) the Company shall declare a dividend (or any other distribution in whatever form) on the Common Stock, (B) the Company shall declare
a special nonrecurring cash dividend on or a redemption of the Common Stock, (C) the Company shall authorize the granting to all holders of the Common Stock rights or warrants to subscribe for or purchase any shares of capital stock of any
class or of any rights, (D) the approval of any stockholders of the Company shall be required in connection with any reclassification of the Common Stock, any consolidation or merger to which the Company is a party, any sale or transfer of all
or substantially all of the assets of the Company, or any compulsory share exchange whereby the Common Stock is converted into other securities, cash or property, or (E) the Company shall authorize the voluntary or involuntary dissolution,
liquidation or winding up of the affairs of the Company, then, in each case, the Company shall cause to be mailed to the Holder at its last address as it shall appear upon the Warrant Register of the Company, at least 20 calendar days prior to the
applicable record or effective date hereinafter specified, a notice stating (x) the date on which a record is to be taken for the purpose of such dividend, distribution, redemption, rights or warrants, or if a record is not to be taken, the
date as of which the holders of the Common Stock of record to be entitled to such dividend, distributions, redemption, rights or warrants are to be determined or (y) the date on which such reclassification, consolidation, merger, sale, transfer
or share exchange is expected to become effective or close, and the date as of which it is expected that holders of the Common Stock of record shall be entitled to exchange their shares of the Common Stock for securities, cash or other property
deliverable upon such reclassification, consolidation, merger, sale, transfer or share exchange; provided that the failure to mail such notice or any defect therein or in the mailing thereof shall not affect the validity of the corporate action
required to be specified in such notice. To the extent that any notice provided hereunder constitutes, or contains, material, non-public information regarding the Company or any of the Subsidiaries, the Company shall simultaneously file such notice
with the Commission pursuant to a Current Report on Form 8-K. The Holder shall remain entitled to exercise this Warrant during the period commencing on the date of such notice to the effective date of the event triggering such notice except as may
otherwise be expressly set forth herein. 
 Section 4. Transfer of Warrant. 

a) Transferability. Subject to compliance with any applicable securities laws and the conditions set forth in
Section 4(d) hereof and to the provisions of Section 4.1 of 

  
 10 

 
the Purchase Agreement, this Warrant and all rights hereunder (including, without limitation, any registration rights) are transferable, in whole or in part, upon surrender of this Warrant at the
principal office of the Company or its designated agent, together with a written assignment of this Warrant substantially in the form attached hereto duly executed by the Holder or its agent or attorney and funds sufficient to pay any transfer taxes
payable upon the making of such transfer. Upon such surrender and, if required, such payment, the Company shall execute and deliver a new Warrant or Warrants in the name of the assignee or assignees, as applicable, and in the denomination or
denominations specified in such instrument of assignment, and shall issue to the assignor a new Warrant evidencing the portion of this Warrant not so assigned, and this Warrant shall promptly be cancelled. Notwithstanding anything herein to the
contrary, the Holder shall not be required to physically surrender this Warrant to the Company unless the Holder has assigned this Warrant in full, in which case, the Holder shall surrender this Warrant to the Company within three (3) Trading
Days of the date the Holder delivers an assignment form to the Company assigning this Warrant full. The Warrant, if properly assigned in accordance herewith, may be exercised by a new holder for the purchase of Warrant Shares without having a new
Warrant issued. 
 b) New Warrants. This Warrant may be divided or combined with other Warrants upon presentation
hereof at the aforesaid office of the Company, together with a written notice specifying the names and denominations in which new Warrants are to be issued, signed by the Holder or its agent or attorney. Subject to compliance with Section 4(a),
as to any transfer which may be involved in such division or combination, the Company shall execute and deliver a new Warrant or Warrants in exchange for the Warrant or Warrants to be divided or combined in accordance with such notice. All Warrants
issued on transfers or exchanges shall be dated the Initial Exercise Date and shall be identical with this Warrant except as to the number of Warrant Shares issuable pursuant thereto. 

c) Warrant Register. The Company shall register this Warrant, upon records to be maintained by the Company for that
purpose (the “Warrant Register”), in the name of the record Holder hereof from time to time. The Company may deem and treat the registered Holder of this Warrant as the absolute owner hereof for the purpose of any exercise hereof or
any distribution to the Holder, and for all other purposes, absent actual notice to the contrary. 
 d) Representation by
the Holder. The Holder, by the acceptance hereof, represents and warrants that it is acquiring this Warrant and, upon any exercise hereof, will acquire the Warrant Shares issuable upon such exercise, for its own account and not with a view to or
for distributing or reselling such Warrant Shares or any part thereof in violation of the Securities Act or any applicable state securities law, except pursuant to sales registered or exempted under the Securities Act. 

e) Transfer Restrictions. If, at the time of the surrender of this Warrant in connection with any transfer of this
Warrant, the transfer of this Warrant shall not be either (i) registered pursuant to an effective registration statement under the Securities Act and under applicable state securities or blue sky laws or (ii) eligible for resale

  
 11 

 
without volume or manner-of-sale restrictions or current public information requirements pursuant to Rule 144, the Company may require, as a condition of allowing such transfer, that the Holder
or transferee of this Warrant, as the case may be, comply with the transfer restrictions in the Purchase Agreement. 

Section 5. Miscellaneous. 

a) No Rights as Stockholder Until Exercise. This Warrant does not entitle the Holder to any voting rights, dividends or
other rights as a stockholder of the Company prior to the exercise hereof as set forth in Section 2(d)(i), except as expressly set forth in Section 3. 

b) Loss, Theft, Destruction or Mutilation of Warrant. The Company covenants that upon receipt by the Company of evidence
reasonably satisfactory to it of the loss, theft, destruction or mutilation of this Warrant or any stock certificate relating to the Warrant Shares, and in case of loss, theft or destruction, of indemnity or security reasonably satisfactory to it
(which, in the case of the Warrant, shall not include the posting of any bond), and upon surrender and cancellation of such Warrant or stock certificate, if mutilated, the Company will make and deliver a new Warrant or stock certificate of like
tenor and dated as of such cancellation, in lieu of such Warrant or stock certificate. 
 c) Saturdays, Sundays, Holidays,
etc. If the last or appointed day for the taking of any action or the expiration of any right required or granted herein shall not be a Business Day, then, such action may be taken or such right may be exercised on the next succeeding Business
Day. 
 d) Authorized Shares. 

The Company covenants that, during the period the Warrant is outstanding, it will reserve from its authorized and unissued
Common Stock a sufficient number of shares to provide for the issuance of the Warrant Shares upon the exercise of any purchase rights under this Warrant. The Company further covenants that its issuance of this Warrant shall constitute full authority
to its officers who are charged with the duty of issuing the necessary Warrant Shares upon the exercise of the purchase rights under this Warrant. The Company will take all such reasonable action as may be necessary to assure that such Warrant
Shares may be issued as provided herein without violation of any applicable law or regulation, or of any requirements of the Trading Market upon which the Common Stock may be listed. The Company covenants that all Warrant Shares which may be issued
upon the exercise of the purchase rights represented by this Warrant will, upon exercise of the purchase rights represented by this Warrant and payment for such Warrant Shares in accordance herewith, be duly authorized, validly issued, fully paid
and nonassessable and free from all taxes, liens and charges created by the Company in respect of the issue thereof (other than taxes in respect of any transfer occurring contemporaneously with such issue). 

  
 12 

 Except and to the extent as waived or consented to by the Holder, the Company
shall not by any action, including, without limitation, amending its certificate of incorporation or through any reorganization, transfer of assets, consolidation, merger, dissolution, issue or sale of securities or any other voluntary action, avoid
or seek to avoid the observance or performance of any of the terms of this Warrant, but will at all times in good faith assist in the carrying out of all such terms and in the taking of all such actions as may be necessary or appropriate to protect
the rights of Holder as set forth in this Warrant against impairment. Without limiting the generality of the foregoing, the Company will (i) not increase the par value of any Warrant Shares above the amount payable therefor upon such exercise
immediately prior to such increase in par value, (ii) take all such action as may be necessary or appropriate in order that the Company may validly and legally issue fully paid and nonassessable Warrant Shares upon the exercise of this Warrant
and (iii) use commercially reasonable efforts to obtain all such authorizations, exemptions or consents from any public regulatory body having jurisdiction thereof, as may be, necessary to enable the Company to perform its obligations under
this Warrant. 
 Before taking any action which would result in an adjustment in the number of Warrant Shares for which this
Warrant is exercisable or in the Exercise Price, the Company shall obtain all such authorizations or exemptions thereof, or consents thereto, as may be necessary from any public regulatory body or bodies having jurisdiction thereof. 

e) Jurisdiction. All questions concerning the construction, validity, enforcement and interpretation of this Warrant
shall be determined in accordance with the provisions of the Purchase Agreement. 
 f) Restrictions. The Holder
acknowledges that the Warrant Shares acquired upon the exercise of this Warrant, if not registered and the Holder does not utilize cashless exercise, will have restrictions upon resale imposed by state and federal securities laws. 

g) Nonwaiver and Expenses. No course of dealing or any delay or failure to exercise any right hereunder on the part of
Holder shall operate as a waiver of such right or otherwise prejudice the Holder’s rights, powers or remedies, notwithstanding the fact that all rights hereunder terminate on the Termination Date. If the Company willfully and knowingly fails to
comply with any provision of this Warrant, which results in any material damages to the Holder, the Company shall pay to the Holder such amounts as shall be sufficient to cover any costs and expenses including, but not limited to, reasonable
attorneys’ fees, including those of appellate proceedings, incurred by the Holder in collecting any amounts due pursuant hereto or in otherwise enforcing any of its rights, powers or remedies hereunder. 

h) Notices. Any notice, request or other document required or permitted to be given or delivered to the Holder by the
Company shall be delivered in accordance with the notice provisions of the Purchase Agreement. 

  
 13 

 i) Limitation of Liability. No provision hereof, in the absence of any
affirmative action by the Holder to exercise this Warrant to purchase Warrant Shares, and no enumeration herein of the rights or privileges of the Holder, shall give rise to any liability of the Holder for the purchase price of any Common Stock or
as a stockholder of the Company, whether such liability is asserted by the Company or by creditors of the Company. 
 j)
Remedies. The Holder, in addition to being entitled to exercise all rights granted by law, including recovery of damages, will be entitled to specific performance of its rights under this Warrant. The Company agrees that monetary damages
would not be adequate compensation for any loss incurred by reason of a breach by it of the provisions of this Warrant and hereby agrees to waive and not to assert the defense in any action for specific performance that a remedy at law would be
adequate. 
 k) Successors and Assigns. Subject to applicable securities laws, this Warrant and the rights and
obligations evidenced hereby shall inure to the benefit of and be binding upon the successors and permitted assigns of the Company and the successors and permitted assigns of Holder. The provisions of this Warrant are intended to be for the benefit
of any Holder from time to time of this Warrant and shall be enforceable by the Holder or holder of Warrant Shares. 
 l)
Amendment. This Warrant may be modified or amended or the provisions hereof waived with the written consent of the Company and the Holder. 

m) Severability. Wherever possible, each provision of this Warrant shall be interpreted in such manner as to be
effective and valid under applicable law, but if any provision of this Warrant shall be prohibited by or invalid under applicable law, such provision shall be ineffective to the extent of such prohibition or invalidity, without invalidating the
remainder of such provisions or the remaining provisions of this Warrant. 
 n) Headings. The headings used in this
Warrant are for the convenience of reference only and shall not, for any purpose, be deemed a part of this Warrant. 
 ********************

 (Signature Page Follows) 

  
 14 

 IN WITNESS WHEREOF, the Company has caused this Warrant to be executed by its officer thereunto
duly authorized as of the date first above indicated. 
  

					
	OXIGENE, INC.
		
	By:	 	  

		 	Name:	 	
		 	Title:	 	

  
 15 

 NOTICE OF EXERCISE 

TO:     OXIGENE, INC. 
 (1)
The undersigned hereby elects to purchase             Warrant Shares of the Company pursuant to the terms of the attached Warrant (only if exercised in full), and tenders herewith payment
of the exercise price in full, together with all applicable transfer taxes, if any. 
 (2) Payment shall take the form of (check applicable
box): 
  ̈  in lawful money of the United States; or 

 ̈  [if permitted the cancellation of such number of Warrant Shares as is necessary,
in accordance with the formula set forth in subsection 2(c), to exercise this Warrant with respect to the maximum number of Warrant Shares purchasable pursuant to the cashless exercise procedure set forth in subsection 2(c). 

(3) Please issue said Warrant Shares in the name of the undersigned or in such other name as is specified below: 

 

					
		  	  
	  	

 The Warrant Shares shall be delivered to the following DWAC Account Number: 

 

					
		  	  
	  	
			
		  	  
	  	
			
		  	  
	  	

 (4) Accredited Investor. The undersigned is an “accredited investor” as defined in Regulation
D promulgated under the Securities Act of 1933, as amended. 
  

			
	[SIGNATURE OF HOLDER]

			
		
	Name of Investing Entity:	 	  

			
	Signature of Authorized Signatory of Investing Entity:	 	  

			
	Name of Authorized Signatory:	 	  

			
	Title of Authorized Signatory:	 	  

			
	Date:	 	  

 ASSIGNMENT FORM 

(To assign the foregoing warrant, execute 

this form and supply required information. 

Do not use this form to exercise the warrant.) 

FOR VALUE RECEIVED, [             all of or
[             shares of the foregoing Warrant and all rights evidenced thereby are hereby assigned to 
  

					
	  
	  	whose address is	 	
		
	 .
	 	
		
	  
	 	

							
				
	Dated:	 	 ,
	 	  
	 	 

							
		 		 		 	
		 		 		 	

  

							
		  	Holder’s Signature:	  	  
	  	
				
		  	Holder’s Address:	  	  
	  	
				
		  		  	  
	  	

 NOTE: The signature to this Assignment Form must correspond with the name as it appears on the face of the Warrant, without
alteration or enlargement or any change whatsoever. Officers of corporations and those acting in a fiduciary or other representative capacity should file proper evidence of authority to assign the foregoing Warrant.

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