Document:

Collaboration Agreement with J.M. Longyear and Frontier

 PORTIONS OF THIS EXHIBIT WERE OMITTED AND HAVE BEEN FILED SEPARATELY WITH THE SECRETARY OF THE COMMISSION
PURSUANT TO AN APPLICATION FOR CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT; [***] DENOTES OMISSIONS. 
 Exhibit
10.11 
 EXECUTION COPY 
 COLLABORATION AGREEMENT 
 BY AND BETWEEN 

MASCOMA CORPORATION 
 AND 
 J.M. LONGYEAR, L.L.C. 

AND 
 FRONTIER
RENEWABLE RESOURCES, LLC 

 PORTIONS OF THIS EXHIBIT WERE OMITTED AND HAVE BEEN FILED SEPARATELY WITH THE SECRETARY OF THE
COMMISSION PURSUANT TO AN APPLICATION FOR CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT; [***] DENOTES OMISSIONS. 
  

 COLLABORATION AGREEMENT 

This Collaboration Agreement is made this 15th day of December, 2008 (the “Effective Date”) by and among MASCOMA CORPORATION, a Delaware corporation
(“Mascoma”), J.M. LONGYEAR, L.L.C., a Michigan limited liability company (“Longyear”), and Frontier Renewable Resources, LLC, a Delaware limited liability company (the “Company” or
“Frontier”). Each of Mascoma and Longyear are sometimes referred to herein as a “Member” or collectively as the “Members”. The Members and the Company shall be referred to separately
as a “Party”, and collectively, the “Parties”. Capitalized terms used by not defined herein shall have the meanings ascribed to such terms in the Operating Agreement (as defined below). 

RECITALS 

WHEREAS, Longyear is engaged in the business of mining and land management, with particular expertise in fiber supply chain
logistics and the development and financing of industrial scale projects (the “Longyear Business”); and 

WHEREAS, Mascoma owns and is developing proprietary microorganisms and manufacturing processes for the advanced, low carbon
production of ethanol and other products from cellulosic biomass (the “Mascoma Business”) and is the owner of confidential data, know-how, patents and other intellectual property rights relating to the Mascoma Business; and

 WHEREAS, Longyear and Mascoma desire to collaborate in the development and operation of an integrated facility within
the State of Michigan that includes a commercial scale cellulosic ethanol production facility, and may include a lumber milling facility and a biomass power facility (the “Project”) at a site to be located in the Upper Peninsula of
the State of Michigan (the “Site”); and 
 WHEREAS, Longyear and Mascoma have formed Frontier,
which entity will own the Site and operate the Project utilizing, among other things (i) services provided by Longyear and Mascoma and (ii) certain intellectual property of Mascoma. 

NOW, THEREFORE, for and in consideration of the foregoing and the mutual covenants contained herein, Longyear, Mascoma, and
Frontier, intending to be legally bound, hereby agree as follows: 
 ARTICLE 1 

DEFINITIONS 
 As used in this Agreement, the following terms, whether used in the singular or plural, shall have the meanings set forth below: 
 1.1 “Affiliate” of a Party means any Person which Controls, is Controlled by, or is under common Control with, such Party. For the purposes of this definition, “Control”
refers to any of the following: (i) the possession, directly or indirectly, of the power to direct the management or policies of an entity, whether through ownership of voting securities, by contract or otherwise;

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(ii) direct or indirect ownership of fifty percent (50%) or more of the voting securities entitled to vote for the election of directors in the case of a corporation, or of fifty percent
(50%) or more of the equity interest in the case of any other type of legal entity (it being understood that the direct or indirect ownership of a lesser percentage shall not necessarily preclude the essence of control); (iii) status as a
general partner in any partnership, or any other arrangement whereby a Party controls or has the right to control the board of directors or equivalent governing body of a corporation or other entity. 

1.2 “Agreement” means this Collaboration Agreement including any and all exhibits, schedules, appendices and other
addenda to it as may be added and/or amended from time to time in accordance with the provisions of the Agreement. 
 1.3
“Business Day” means a day that is not a Saturday, Sunday or a day on which banking institutions in New York, New York are authorized by Law to remain closed. 

1.4 “Governmental Authority” means any court, tribunal, arbitrator, agency, legislative body, commission, official or
other instrumentality of any federal, state, provincial, county, city or other political subdivision, in each case having jurisdiction over the Parties, Frontier, the Project and/or the Site. 

1.5 “Know-How” means any and all information and materials, whether proprietary or not and whether patentable or not,
including ideas, concepts, formulas, methods, procedures, designs, compositions, plans, documents, data, inventions, discoveries, works of authorship relating to the Project, the Site and/or the Mascoma Business. 

1.6 “Law” or “Laws” means all laws, statutes, rules, codes, regulations, orders, decrees, judgments
and/or ordinances of any Governmental Authority. 
 1.7 “Losses” means any and all damages (including
all incidental, consequential, statutory and treble damages), awards, deficiencies, settlement amounts, defaults, assessments, fines, dues, penalties, costs, fees, liabilities, obligations, taxes, liens, losses, lost profits and expenses (including
court costs, interest and reasonable fees of attorneys, accountants and other experts) incurred by or awarded to Third Parties and required to be paid to Third Parties with respect to a Claim (as defined below) by reason of any judgment, order,
decree, stipulation or injunction, or any settlement entered into in accordance with the provisions of this Agreement, together with all documented out-of-pocket costs and expenses incurred in complying with any judgments, orders, decrees,
stipulations and injunctions that arise from or relate to a Claim of a Third Party. 
 1.8 “Mascoma Intellectual
Property” means Mascoma Know-How and Mascoma Patent Rights, collectively. 
 1.9 “Mascoma Know-How”
means any Know-How relating to the Mascoma Business, the Project, the Site or is otherwise controlled by, or owned by, or licensed to, Mascoma, as of the Effective Date or at any time during the Term. 

1.10 “Mascoma Patent Rights” means Patent Rights, owned or controlled by Mascoma as of the Effective Date or at any time
during the Term. 

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 1.11 “Patent Rights” means (a) all national, regional and
international patents and patent applications, including provisional patent applications; (b) all patent applications filed either from such patents, patent applications or provisional applications or from an application claiming priority from
any of these, including divisional, continuations, continuations-in-part, provisionals, converted provisionals, and continued prosecution applications; (c) any and all patents that have issued or in the future issue from the foregoing patent
applications (a) and (b), including author certificates, inventor certificates, utility models, petty patents and design patents and certificates of invention; (d) any and all extensions or restorations by existing or future extension or
restoration mechanisms, including revalidations, reissues, re-examinations and extensions (including any supplementary protection certificates and the like) of the foregoing patents or patent applications (a), (b) and (c); and (e) any
similar rights, including pipeline protection (where the subject matter previously disclosed was not previously patentable in a particular jurisdiction but subsequently becomes patentable subject matter in such jurisdiction), or any importation,
revalidation, confirmation or introduction patent or registration patent or patent of additions to any such foregoing patent applications and patents. 
 1.12 “Person” means any natural person, corporation, firm, business trust, joint venture, association, organization, company, partnership or other business entity, or any government, or
any agency or political subdivisions thereof. 
 1.13 “Project Construction Phase” means the phase of the
Project described on Schedule 1.13. 
 1.14 “Project Development Phase” means the phase of the Project
described on Schedule 1.14. 
 1.15 “Project Financing Phase” means the phase of the Project described
on Schedule 1.15. 
 1.16 “Project Formation Phase” means the phase of the Project described on
Schedule 1.16. 
 1.17 “Regulatory Approval” means any approval, including price approval, registration,
license or authorization from any Governmental Authority required for the acquisition, development, operation or commercialization of the Project and/or the Site. 
 1.18 “Regulatory Authority” means any federal, state, county, city, provincial, national, or local regulatory agency, department, bureau or other governmental entity with authority or
jurisdiction over the acquisition, development, operation or commercialization of the Project and/or the Site. 
 1.19
“Third Party” means any Person other than a Party or any of its Affiliates or their respective employees. 

1.20 “Transaction Documents” means any and all of the agreements described on Schedule 1.20. 

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COMMISSION PURSUANT TO AN APPLICATION FOR CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT; [***] DENOTES OMISSIONS. 
  

 ARTICLE 2 
 THE COLLABORATION 
 2.1 Organization of the Company. The
Company was formed as a limited liability company under the laws of the State of Delaware pursuant to the filing of the Certificate of Formation with the Secretary of the State of Delaware on December 2, 2008. As of the Effective Date, the
Members shall become parties to the Limited Liability Company Operating Agreement of the Company (the “LLC Agreement”) in the form attached hereto as Exhibit 1. 

2.2 Purpose of the Company. Each of the Parties hereby acknowledges and agrees that the purpose for which the Company has
been formed and will be operated pursuant to the LLC Agreement shall be: 
 (a) to develop and operate an integrated facility
within the State of Michigan that includes a commercial scale cellulosic fuel production facility, that may also include a lumber milling facility and a biomass power facility; and 

(b) to enter into agreements and perform its obligations under the Transaction Documents and/or with the Members and/or their respective
Affiliates for the purpose of deploying their respective scientific, technical and operational capabilities, which agreements shall contain appropriate confidentiality, intellectual property and commercial terms to carry out the purposes of the
collaboration; 
 (c) Pursuant to the provisions of the LLC Agreement, the Company shall operate as an independent entity
separate and apart from the Members. As of the Effective Date, the Company shall take such actions as are consistent with the operation of an independent business, including maintaining a workforce as required by the operational needs of the
Company, entering into and fully performing its own contracts and maintaining its own property, facilities and equipment. 
 (d)
As of the Effective Date, the Project shall be managed by the Board and by officers of the Company as provided in the LLC Agreement. 
 (e) The Company shall conduct all of its activities in full compliance with this Agreement, applicable laws and all ethics and compliance policies adopted from time to time by the Board. 

ARTICLE 3 

RECORDS; WITHHOLDING 
 3.1 Records. Each of Mascoma and Longyear (as applicable, the “Payor”) shall, and shall cause its Affiliates to, keep full and accurate books and records setting forth, as
applicable, its costs incurred in the development of the Project and the Site. No more than once per calendar year, the Payor shall permit the other Party (the “Payee”), at the Payee’s sole expense, by an internationally
recognized independent accountant selected by the Payee (as to which the Payor has no reasonable objection), to examine such books and records upon at least thirty (30) days’ 

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advance written notice during normal business hours and in a manner that does not materially interfere with the Payor’s business, but not later than three (3) years following the
rendering of any such reports, accountings and payments. The foregoing right of review may be exercised only once with respect to each such periodic report and payment. Such independent accountant may be required by the Payor to enter into a
reasonably acceptable confidentiality agreement, and in no event shall such independent accountant reveal to the Payee the details of its review except insofar as is necessary to verify the accuracy of reports and payments made or due hereunder. The
results of any such audit shall be delivered in writing to each Party. 
 3.2 Withholding Taxes. Where any sum due
to be paid to either Party is subject to any withholding or similar tax, the Parties and their Affiliates shall use their best efforts to do all such acts and things and to sign all such documents as will enable them to take advantage of any
available withholding tax reduction including pursuant to any applicable double taxation agreement or treaty. In the event there is no applicable double taxation agreement or treaty, or if an applicable double taxation agreement or treaty reduces
but does not eliminate such withholding or similar tax, the Party or Affiliate owing such payment shall pay such withholding or similar tax to the appropriate Government Authority, deduct the amount paid from the amount due the Party to which such
payment is owed and secure and send to such Party the best available evidence of payment of any such withholding taxes. 

ARTICLE 4 

[RESERVED] 

ARTICLE 5 

DEVELOPMENT AND COMMERCIALIZATION 
 5.1 General. The Company shall recommend to Mascoma and Longyear the roles and responsibilities of the Parties for each of the various phases of the Project, including the Project Formation
Phase, the Project Development Phase, the Project Financing Phase and the Project Construction Phase. Any such roles and responsibilities shall be subject to written agreements entered into by the relevant Parties and the recommendations of the
Company with respect to such matters shall not in itself bind the Parties and therefore such recommendations are subject to the final agreements, if any, entered into by the parties thereto setting forth such roles and responsibilities.

 5.2 Conduct of the Alliance. Each Party will use Commercially Reasonable Efforts to fulfill its development
and other obligations with respect to the Project. For the purposes hereof, the term “Commercially Reasonable Efforts” shall mean, with respect to the efforts to be applied by a Party in performing a referenced obligation hereunder, the
amount and quality of effort and resources that would be applied by a reasonable manager or management team at a corporation having comparable expertise and assets as such Party, to accomplish a task or to perform an obligation having comparable
relative importance to the success or failure of a commercial enterprise that is comparable to the Project. For purposes of this definition, a commercial enterprise would be comparable to the Project if it poses similar anticipated technical and
business risks or challenges and similar anticipated financial return to the Parties as measured at 

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the time of the expenditure of the effort. The obligation of a Party hereunder can be satisfied by an Affiliate thereof. 
 ARTICLE 6 
 INTELLECTUAL PROPERTY 

6.1 Ownership of Inventions. Mascoma shall solely own all inventions conceived of and reduced to practice by any
person or entity in the course of the Project (“Mascoma Inventions”). Each Party will, and will require all of its and its Affiliates’ employees, agents and contractors to (i) promptly disclose to Mascoma all
Mascoma Inventions, and (ii) to assign to Mascoma all Mascoma Inventions and all related patent applications. Mascoma shall retain the ownership of, and the right to exploit, all Mascoma Intellectual Property for any and all purposes (whether
related to the Project or the Site or otherwise). 
 6.2 Third Party Licenses. In the event that the
Board determine that it is necessary or desirable for Mascoma to enter into a license with a Third Party (a “Third Party License”) to facilitate the development or operation of the Project and/or the Site, then if Mascoma agrees to
enter into such Third Party License or otherwise provides technology to Frontier pursuant to a Third Party License, (i) Mascoma will be entitled to reimbursement from the Company for all payments due to such Third Party (the “Third
Party License Fees”) for such Third Party License incurred in connection with the Project and (ii) to the extent Mascoma is not so reimbursed, Mascoma may set off and deduct such amount owed to Mascoma from any sums otherwise due from
Mascoma to the Company under any agreement. In the event that in any one calendar year, Mascoma does not fully recover such Third Party License Fees, it shall be entitled to carry forward such right of off-set to future calendar years with respect
to such excess amount. 
 ARTICLE 7 
 CONFIDENTIALITY 
 7.1 Definition of Confidential
Information. For the purpose of this Agreement “Confidential Information” means all trade secrets or other proprietary information, including any proprietary data and materials (whether or not patentable or
protectable as a trade secret), regarding a Party’s technology, products or business or regarding the Project or the Site, that is disclosed by a Party to the other Party pursuant to this Agreement, as well as the terms and conditions of this
Agreement. Notwithstanding the foregoing, there shall be excluded from the foregoing definition of Confidential Information any of the foregoing that: 
 7.1.1 was known by the receiving Party prior to its date of disclosure to the receiving Party as shown by the receiving Party’s written records; 

7.1.2 either before or after the date of the disclosure to the receiving Party is lawfully disclosed to the
receiving Party by a Third Party not in violation of any obligation to the disclosing Party of which the receiving Party is aware after due inquiry; 
 7.1.3 either before or after the date of the disclosure to the receiving Party becomes published or generally known to the public through no fault or omission on the part of the receiving Party; or

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 7.1.4 is independently developed by or for the receiving Party
without reference to or reliance upon the Confidential Information as demonstrated by contemporaneous written records of the receiving Party. 
 For the purpose of this Section 7.1 “Party” shall include Affiliates of such Party. 
 7.2 Treatment of Confidential Information. Subject to the provisions this Article 7, during the Term and for a period of five (5) years thereafter, each of the Parties shall maintain
Confidential Information of the other Party in confidence, and shall not disclose, divulge or otherwise communicate such Confidential Information to others (except as permitted pursuant to Section 7.3 or Section 7.4) or use it for any
purpose other than permitted in this Agreement, and each Party agrees to exercise reasonable efforts to prevent and restrain the unauthorized disclosure of such Confidential Information by any of its directors, officers, employees, consultants,
investors, financial advisors, subcontractors, licensees or agents, which reasonable efforts shall be at least as diligent as those generally used by such Party in protecting its own confidential and proprietary information. 

7.3 Right to Disclose. To the extent it is reasonably necessary or appropriate to fulfill its obligations or exercise its
rights under this Agreement or any rights which survive termination or expiration hereof, each of the Parties may consistent with its obligations under this Agreement disclose Confidential Information to its employees, agents, licensees,
consultants, outside contractors, clinical investigators or other Third Parties on a need to know basis and on the condition that such Persons agree in writing: 
 7.3.1 to keep the Confidential Information confidential to the extent possible for the same time periods and to a comparable extent as the disclosing Party is required to keep the Confidential
Information confidential; and 
 7.3.2 to use the Confidential Information only for such purposes as the
disclosing Party is entitled to use the Confidential Information. 
 7.4 Required Disclosures. Each Party
or its Affiliates may disclose such Confidential Information to Governmental Authorities to the extent that such disclosure (i) is reasonably necessary to obtain Regulatory Approvals, (ii) to the extent such disclosure is reasonably
necessary to comply with the order of a court, or (iii) to the extent such disclosure is required to comply with applicable Law, including to the extent such disclosure is required in publicly filed financial statements or other public
statements under rules governing a stock exchange (including the rules of the United States Securities and Exchange Commission, Nasdaq, NYSE, or any other stock exchange on which securities issued by either Party may be listed). To the extent
practicable, the disclosing Party shall be given at least three (3) Business Days advance notice of any such legally required disclosure and the other Party shall provide any comments on the proposed disclosure during such period. To the extent
that either Party determines that it or the other Party is required to file or register this Agreement or a notification thereof to comply with the requirements of an applicable stock exchange or Nasdaq regulation or any Governmental Authority, such
Party shall promptly inform the other Party thereof. Prior to making any such filing, registration or notification, the Parties shall agree on the provisions of this Agreement for which the Parties shall seek confidential treatment, it being
understood that if 

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one Party determines to seek confidential treatment for a provision for which the other Party does not, then the Parties will use reasonable efforts in connection with such filing to seek the
confidential treatment of any such provision. The Parties shall cooperate, each at its own expense, in such filing, registration or notification, including without limitation such confidential treatment request, and shall execute all documents
reasonably required in connection therewith. In furtherance of the foregoing, at the request of either Party, the Parties will agree as promptly as practicable after the Effective Date on any confidential treatment request that may need to be filed
with the U.S. Securities and Exchange Commission or a comparable Governmental Authority from another country and the redacted form of this Agreement related thereto. In that connection, any redaction reasonably requested by either Party shall be
included in such filing. The Parties will reasonably cooperate in responding promptly to any comments received from the U.S. Securities and Exchange Commission or a comparable Governmental Authority from another country with respect to such filing
in an effort to achieve confidential treatment of such redacted form; provided that a Party shall be relieved of such obligation to seek confidential treatment for a provision requested by the other Party if such treatment is not achieved after the
second round of responses to comments from the U.S. Securities and Exchange Commission or such comparable Governmental Authority. 
 7.5 Return of Confidential Information. Upon any termination of this Agreement, each Party shall promptly return to the other Party all written Confidential Information, and all copies
thereof, of such other Party, except that each Party may retain one copy of such Confidential Information solely to discern its continuing obligations under this Article 7. 
 7.6 Announcements. 
 7.6.1 Coordination. The
Parties agree on the importance of coordinating their public announcements respecting the Project and this Agreement and the subject matter hereof. Longyear and Mascoma will, from time to time, and at the request of the other Party discuss the
general information content relating to the Project and this Agreement which may be publicly disclosed. The above-referenced releases may be Mascoma releases, Longyear releases or joint Mascoma/Longyear releases, and the Parties may agree to draft
joint disclosures. The Parties shall endeavor to agree on all public announcements that are discussed; provided, however, in no event may Longyear or Company make a public announcement regarding the Project, Site or this Agreement without the prior
approval of Mascoma, such approval not to be unreasonably withheld or conditioned. Notwithstanding the foregoing, a Party may make any disclosure where in a Party’s reasonable legal opinion it is required by applicable Law or applicable stock
exchange regulation or order or other ruling of a competent court, provided that prior to such disclosure, the disclosing Party shall use reasonable efforts to notify the other Party prior to making such disclosure, and will provide the other Party
with an opportunity to review and comment prior to release, provided the disclosing Party shall not be required to delay such disclosures by more than twenty-four (24) hours to receive and discuss such comments, so long as the disclosing Party
has provided to the other Party as much advance notice as is reasonably practicable under the circumstances. Each Party agrees that it shall reasonably cooperate with the other with respect to all disclosures regarding this Agreement to the
Securities Exchange Commission and any other Governmental Authority, including requests for confidential treatment of proprietary information of either Party included in any such disclosure. 

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 ARTICLE 8 
 REPRESENTATIONS AND WARRANTIES; CERTAIN COVENANTS 
 8.1 Mascoma
Representations and Warranties. Mascoma represents and warrants to Longyear as of the Effective Date that: 

8.1.1 Duly Organized. Mascoma (a) is a corporation duly organized, validly existing and in good standing under
the Laws of Delaware; (b) is duly qualified as a corporation and in good standing under the Laws of each jurisdiction where its ownership or lease of property or the conduct of its business requires such qualification, where the failure to be
so qualified would have a material adverse effect on its financial condition or its ability to perform its obligations hereunder; (c) has the requisite corporate power and authority and the legal right to conduct its business as now conducted;
(d) has all necessary licenses, permits, consents, authorizations or approvals from or by, and has made all necessary notices to, all Governmental Authorities having jurisdiction, to the extent required for such ownership and operation; and
(e) is in compliance with its organizational documents. 
 8.1.2 Authorization of this Agreement. The
execution, delivery and performance of this Agreement has been duly authorized by all requisite action on the part of Mascoma and this Agreement constitutes a legal, valid and binding obligation of Mascoma enforceable against Mascoma in accordance
with its terms except to the extent that enforceability may be limited by bankruptcy, insolvency or other similar Laws affecting creditors’ rights generally. 

8.1.3 No Conflict. The execution and delivery by Mascoma of this Agreement and the consummation by Mascoma of the
transactions contemplated hereby and the compliance by Mascoma with the provisions hereof will not (a) violate any provision of Law or any ruling, writ, injunction, order, judgment or decree of any court, administrative agency or other
governmental body applicable to it, or any of its properties or assets, (b) conflict with or result in any breach of any of the terms, conditions or provisions of, or constitute (with due notice or lapse of time, or both) a default under, or
result in the creation of any encumbrance upon any of its properties or assets under, any contract to which it is a party, or (c) violate its certificate of incorporation or by-laws or other organizational documents, that in the case of clause
(a) or (b), would individually or in the aggregate, reasonably be expected to have or result in a material adverse effect, or prevent the consummation of the transactions contemplated hereby. 

8.2 Longyear Representations and Warranties. Longyear represents and warrants to Mascoma as of the Effective Date that:

 8.2.1 Duly Organized. Longyear (a) is a limited liability, company duly organized and validly
existing under the Laws of Michigan; (b) is duly qualified as a limited liability company and in good standing under the Laws of each jurisdiction where its ownership or lease of property or the conduct of its business requires such
qualification, where the failure to be so qualified would have a material adverse effect on its financial condition or its ability to perform its obligations hereunder; (c) has the requisite limited liability company power and authority and the
legal right to conduct its business as now conducted and hereafter contemplated to be conducted; (d) has all necessary licenses, permits, consents, authorizations or approvals 

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from or by, and has made all necessary notices to, all Governmental Authorities having jurisdiction, to the extent required for such ownership and operation; and (e) is in compliance with
its organizational documents. 
 8.2.2 Authorization of this Agreement. The execution, delivery and
performance of this Agreement has been duly authorized by all requisite action on the part of Longyear and this Agreement constitutes a legal, valid and binding obligation of Longyear enforceable against Longyear in accordance with its terms except
to the extent that enforceability may be limited by bankruptcy, insolvency or other similar Laws affecting creditors’ rights generally. 
 8.2.3 No Conflict. The execution and delivery by Longyear of this Agreement and the consummation by Longyear of the transactions contemplated hereby and the compliance by Longyear with the
provisions hereof will not (a) violate any provision of Law or any ruling, writ, injunction, order, judgment or decree of any court, administrative agency or other governmental body applicable to it, or any of its properties or assets,
(b) conflict with or result in any breach of any of the terms, conditions or provisions of, or constitute (with due notice or lapse of time, or both) a default under, or result in the creation of any encumbrance upon any of its properties or
assets under, any contract to which it is a party, or (c) violate its certificate of incorporation or by-laws or other organizational documents, that in the case of clause (a) or (b), would individually or in the aggregate, reasonably be
expected to have or result in a material adverse effect, or prevent the consummation of the transactions contemplated hereby. 

8.3 Disclaimer of Warranties. NEITHER PARTY MAKES ANY REPRESENTATION OR WARRANTY OTHER THAN THOSE EXPRESSLY PROVIDED HEREUNDER AND
EACH PARTY HEREBY DISCLAIMS ALL SUCH OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCT. 
 8.4 Mutual Covenants. Each Party hereby covenants and agrees during the Term that: 
 8.4.1 Compliance with Industry Standards and Laws. Such Party shall carry out its obligations or activities hereunder in accordance with (i) the terms of this Agreement, (ii) accepted
industry practices and (iii) all applicable Laws. Such Party shall maintain all necessary licenses, permits, consents, authorizations, approvals or registrations from or by, and shall make all necessary notices and filings to, all Governmental
Authorities and all Regulatory Authorities, to the extent required in order to fulfill its obligations under this Agreement and the Ancillary Documents. 
 8.4.2 No Third Party Conflicts. Neither Party shall enter into any agreement with a Third Party which, in any way, will materially limit such Party’s ability to perform all of the obligations
undertaken by it hereunder. 

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 ARTICLE 9 
 INDEMNIFICATION 
 9.1 By Longyear. Longyear shall defend, indemnify
and hold harmless Mascoma and its Affiliates and each of their officers, directors, shareholders, employees, successors and assigns from and against all claims, charges, complaints, actions, suits, proceedings, hearings, investigations and demands
(“Claims”) of Third Parties, and all associated Losses, to the extent arising out of (a) any breach by Longyear of any representation, warranty, covenant or obligation given in this Agreement, (c) the negligence, willful
misconduct or willful omissions of Longyear or any of its Affiliates (other than Frontier) in the performance of its obligations hereunder or under any of the Ancillary Documents, (d) any Claim that that the Longyear Business or its
participation in the Project infringes the intellectual property rights of such Third Party; provided, however, that in all cases referred to in this Section 9.1, Longyear shall not be liable to indemnify Mascoma for any Losses of Mascoma to
the extent that such Losses of Mascoma were caused by the gross negligence or willful misconduct or wrongdoing of Mascoma or any of its Affiliates. 
 9.2 By Mascoma. Mascoma shall defend, indemnify and hold harmless Longyear and its Affiliates (other than Frontier) and each of their officers, directors, shareholders, employees, successors and
assigns from and against all Claims of Third Parties and all associated Losses, to the extent arising out of (a) any breach by Mascoma of any representation or warranty, covenant, or obligation given in this Agreement or (b) the
negligence, willful misconduct or willful omissions of Mascoma or any of its Affiliates (other than Frontier) in the performance of its obligations hereunder or under any of the Ancillary Documents; provided, however, that in all cases referred to
in this Section 9.2, Mascoma shall not be liable to indemnify Longyear for any Losses of Longyear to the extent that such Losses of Longyear were caused by the gross negligence or willful misconduct or wrongdoing of Longyear or any of its
Affiliates. 
 9.3 Procedure for Indemnification. 

9.3.1 Notice. Each Party will notify promptly the other if it becomes aware of a Claim (actual or potential) by any
Third Party (a “Third Party Claim”) for which indemnification may be sought by that Party and will give such information with respect thereto as the other Party shall reasonably request. If any proceeding (including any governmental
investigation) is instituted involving any Party for which such Party may seek an indemnity under Section 9.1 or Section 9.2 (the “Indemnified Party”), the Indemnified Party shall not make any admission or statement
concerning such Third Party Claim, but shall promptly notify the other Party (the “Indemnifying Party”) orally and in writing and the Indemnifying Party and Indemnified Party shall meet to discuss how to respond to any Third Party
Claims that are the subject matter of such proceeding. The Indemnifying Party shall not be obligated to indemnify the Indemnified Party to the extent any admission or statement made by the Indemnified Party or any failure by such Party to notify the
Indemnifying Party of the Claim materially prejudices the defense of such Claim. 
 9.3.2 Defense of
Claim. If the Indemnifying Party elects to defend or, if local procedural rules or laws do not permit the same, elects to control the defense of a Third Party Claim, it shall be entitled to do so provided it gives notice to the Indemnified Party
of its 

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intention to do so within forty-five (45) days after the receipt of the written notice from the Indemnified Party of the potentially indemnifiable Third Party Claim (the “Litigation
Condition”); provided that the Indemnifying Party expressly agrees the Indemnifying Party shall be responsible for satisfying and discharging any award made to the Third Party as a result of such proceedings or settlement amount
agreed with the Third Party in respect of the Third Party Claim without prejudice to any provision in this Agreement or right at law which will allow the Indemnifying Party subsequently to recover any amount from the Indemnified Party to the extent
the liability under such settlement or award was attributable to the Indemnified Party. Subject to compliance with the Litigation Condition, the Indemnifying Party shall retain counsel reasonably acceptable to the Indemnified Party (such acceptance
not to be unreasonably withheld, refused, conditioned or delayed) to represent the Indemnified Party and shall pay the fees and expenses of such counsel related to such proceeding. In any such proceeding, the Indemnified Party shall have the right
to retain its own counsel, but the fees and expenses of such counsel shall be at the expense of the Indemnified Party. The Indemnified Party shall not settle any Claim for which it is seeking indemnification without the prior consent of the
Indemnifying Party which consent shall not be unreasonably withheld, refused, conditioned or delayed. The Indemnified Party shall, if requested by the Indemnifying Party, cooperate in all reasonable respects in the defense of such Claim that is
being managed and/or controlled by the Indemnifying Party. The Indemnifying Party shall not, without the written consent of the Indemnified Party (which consent shall not be unreasonably withheld, refused, conditioned or delayed), effect any
settlement of any pending or threatened proceeding in which the Indemnified Party is, or based on the same set of facts could have been, a party and indemnity could have been sought hereunder by the Indemnified Party, unless such settlement includes
an unconditional release of the Indemnified Party from all liability on Claims that are the subject matter of such proceeding. If the Litigation Condition is not met, then neither Party shall have the right to control the defense of such Third Party
Claim and the Parties shall cooperate in and be consulted on the material aspects of such defense at the each Party’s own expense; provided that if the Indemnifying Party does not satisfy the Litigation Condition, the Indemnifying Party may at
any subsequent time during the pendency of the relevant Third Party Claim irrevocably elect, if permitted by local procedural rules or laws, to defend and/or to control the defense of the relevant Third Party Claim so long as the Indemnifying Party
also agrees to pay the reasonable fees and costs incurred by the Indemnified Party in relation to the defense of such Third Party Claim from the inception of the Third Party Claim until the date the Indemnifying Party assumes the defense or control
thereof. 
 9.4 Assumption of Defense. Notwithstanding anything to the contrary contained herein, an Indemnified Party
shall be entitled to assume the defense of any Third Party Claim with respect to the Indemnified Party, upon written notice to the Indemnifying Party pursuant to this Section 9.4, in which case the Indemnifying Party shall be relieved of
liability under Section 9.1 or 9.2, as applicable, solely for such Third Party Claim and related Losses. 
 9.5 No
Consequential or Punitive Damages. NEITHER PARTY HERETO WILL BE LIABLE FOR INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL, EXEMPLARY, PUNITIVE OR MULTIPLE DAMAGES ARISING OUT OF THIS AGREEMENT OR THE EXERCISE OF ITS RIGHTS HEREUNDER, OR FOR LOST
PROFITS ARISING FROM OR RELATING TO ANY BREACH OF THIS AGREEMENT, REGARDLESS OF ANY NOTICE OF SUCH DAMAGES. NOTHING IN THIS SECTION 9.5 IS INTENDED TO LIMIT OR 

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RESTRICT THE INDEMNIFICATION RIGHTS OR OBLIGATIONS OF EITHER PARTY PURSUANT TO SECTION 9.1 AND SECTION 9.2 WITH RESPECT TO THIRD PARTY CLAIMS. 

9.6 Insurance. Each Party shall maintain commercial general liability insurance coverages in such amounts as are reasonable and
customary in its industry for companies of comparable size and activities and in any event the limits and coverage of such insurance shall be not less than those set forth on the attached Schedule 9.6. Each of Mascoma and Longyear, prior to
execution of this Collaboration Agreement has furnished certificates of insurance for such coverages now in force to the other Parties, and all Parties agree that such coverages satisfy the requirements of this Section 9.6. The Parties may
agree that other coverages shall be obtained by the Parties. Each of Mascoma and Longyear shall maintain the coverages required by this Section 9.6 in effect for so long as it is a Party to this Agreement and has obligations hereunder. Upon
request by the other Party, a Party shall furnish certificates of insurance for all of the above noted policies. Each insurance policy that is required under this Section shall be obtained from an insurance carrier with an A.M. Best rating of at
least A-VII. Either Party may fulfill its insurance obligations hereunder pursuant to self-insurance effected by it (and not any Affiliate), if and for so long as that Party is investment grade (i.e. “A” grade or better) as determined by
S&P or Moody’s (or any foreign equivalent thereof). 
 ARTICLE 10 

TERM AND TERMINATION 
 10.1 Term. Unless terminated sooner pursuant to this Article 10, this Agreement shall become effective as of the Effective Date and shall continue in full force and effect until the dissolution or
winding up of the Company or such earlier date on which either Mascoma or Longyear no longer is a Member of the Company (the “Term”). 
 10.2 Material Default. Subject to the provisions of Article 11, Longyear shall have the right, by written notice to Mascoma and subject to the applicable cure period, if any, to terminate this
Agreement upon a Material Default by Mascoma. Mascoma shall have the right, by written notice to Longyear and subject to the applicable cure period, if any, to terminate this Agreement upon a Material Default by Longyear. For the purposes of this
Section 10.2, a “Material Default” means: 
 10.2.1 any default by a Party hereto of
its representations, warranties, covenants, agreements or other performance obligations under this Agreement and (other than a payment obligation) that, when aggregated with any other such uncured defaults by such Party, is (a) material to this
Agreement taken as a whole, and (b) shall have continued for sixty (60) days after written notice thereof was provided to the alleged defaulting Party by the non-defaulting Party (or, if such default cannot be cured within such sixty
(60) day period, if the alleged defaulting Party does not promptly commence and diligently continue all reasonable actions to cure such defaults during such sixty (60) day period or does not cure in full such default within ninety
(90) days after written notice thereof was provided to the alleged defaulting Party); or 
 10.2.2
any default by any Party of its payment obligations under any Ancillary Document that shall have continued for thirty (30) days after written notice thereof was provided 

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to the alleged defaulting Party by the non-defaulting Party; provided that, in the event of a good faith payment dispute, such thirty (30) day cure period shall be extended through the
fifteenth day following the date on which such dispute is resolved if the alleged defaulting Party paid all undisputed amounts when due and provided the non-defaulting Party with a reasonably detailed written explanation of the alleged defaulting
Party’s basis for disputing the payment obligation within the thirty (30) day period following the written notice of the default by the non-defaulting Party. 
 10.3 Bankruptcy. Each Party may, in addition to any other remedies available to it by Law or in equity, exercise the rights set forth below by written notice to the other Party (the
“Insolvent Party”), in the event the Insolvent Party shall have become insolvent or bankrupt, or shall have made a general assignment for the benefit of its creditors, or there shall have been appointed a trustee or receiver of the
Insolvent Party or for all or a substantial part of its property, or any case or proceeding shall have been commenced or other action taken by or against the Insolvent Party in bankruptcy or seeking reorganization, liquidation, dissolution,
winding-up arrangement, composition or readjustment of its debts or any other relief under any bankruptcy, insolvency, reorganization or other similar Law of any jurisdiction now or hereafter in effect, and any such event shall have continued for
sixty (60) days un-dismissed, un-bonded and un-discharged. 
 10.4 Effects of Termination. 

10.4.1 Without limiting any other legal or equitable remedies that Longyear or Mascoma may have and in lieu of
terminating this Agreement pursuant to Section 10.2, such Party may elect to remedy any such Material Default of the other Party on its own and deduct any amounts incurred by such Party in remedying such Material Default of the other Party from
any sums that such Party may then owe or in the future owe to the other Party or Frontier pursuant to the terms of this Agreement or any Ancillary Document. 
 10.4.2 Upon termination of this Agreement by a Party, each Party shall as promptly as commercially practicable transfer to the other Party or their designee all records and materials in their
possession or control containing Confidential Information of the disclosing Party. Each Party shall execute all documents and take all such further actions as may be reasonably requested in order to give effect to this Section 10.4.2.

 10.5 Survival of Rights and Obligations upon Termination or Expiration. Upon expiration or termination of this
Agreement, the rights and obligations of the Parties hereunder shall cease, except as otherwise set forth in this Article 10 and as follows: 
 10.5.1 The obligations set forth in Article 7 (Confidentiality) and Article 12.19 (Non-Competition) shall survive for the period provided therein; 

10.5.2 The obligations set forth in Article 6 (Intellectual Property) (with respect to ownership), Article 9
(Indemnification), Article 10 (Term and Termination) and Article 11 (Dispute Resolution) shall survive without limitation; and 

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 10.5.3 The Parties shall not be relieved of any obligations
accruing prior to such applicable expiration or termination under this Agreement (including all payment obligations which relate to all periods on or prior to such expiration or termination). 

ARTICLE 11 

DISPUTE RESOLUTION 
 11.1 Continuance of Rights and Obligations During Pendency of Dispute Resolution. If there are any disputes, controversies or claims arriving out of or in connection with this Agreement
((including, without limitation, Disputes relating to (i) the validity, inducement or breach of or the interpretation of any provision of this Agreement, or (ii) the interpretation or application of law (a “Dispute”), all
rights and obligations of the Parties shall continue until such time as any Dispute has been resolved in accordance with the provisions of this Article 11. 
 11.2 Referral of Unresolved Matters. In the event of a Dispute, individuals designated by each of Mascoma and Longyear (the “Party Representatives”) shall enter into negotiations
in good faith to settle such Dispute. In the event that the Party Representatives are unable to resolve a Dispute within thirty (30) days from the date such dispute is first brought to their attention, the matter shall be referred to the chief
executive officer of each Party to be resolved by negotiation in good faith as soon as is practicable but in no event later than thirty (30) days after referral. Such resolution, if any, of a referred issue by the senior executives shall be
final and binding on the Parties. 
 11.3 Non-Binding Mediation. If the matter has not been resolved by the senior
executives within thirty (30) days of referral in accordance with Section 11.2, or if the senior executives fail to meet within such thirty (30) days, either Party may initiate a non-binding mediation procedure. The non-binding
mediation shall be administered by the American Arbitration Association (“AAA”) in accordance with its commercial mediation rules. Unless otherwise mutually agreed upon by the Parties, the mediation proceedings shall be conducted at
the location chosen by the Party not originally requesting the resolution of the Dispute. The Parties agree that they shall share equally the cost of the mediation, including filing and hearing fees, and the cost of the mediator(s). Each Party shall
have the right, at its own expense, to be represented by counsel in such a proceeding. 
 11.4 Arbitration. Any Dispute
which the Parties have not resolved under Section 11.2 or Section 11.3, shall be decided by arbitration in accordance with the International Rules of the AAA for Commercial Arbitration in effect at the time the Dispute arises, unless the
Parties hereto mutually agree otherwise. To the extent such rules are inconsistent with this provision, this provision will control. 
 11.4.1 Any demand for arbitration must be made in writing to the other Party. 
 11.4.2 There will be one arbitrator mutually selected by the Parties. If the Parties cannot agree on an arbitrator within thirty (30) days, then the AAA shall appoint the arbitrator in
accordance with its International Rules of the AAA for Commercial Arbitration. Any arbitration 

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involving patent rights, other intellectual property rights or intellectual property shall be heard by an arbitrator who is an expert in such areas. 

11.4.3 The arbitration shall be held in Wilmington, Delaware, United States, or such other place as the Parties
agree. The arbitrator shall apply the substantive law of the State of Delaware in accordance with Section 12.1, without regard to conflicts of laws and except that the interpretation and enforcement of this arbitration provision shall be
governed by the Federal Arbitration Act, 9 U.S.C. Section 1 et. seq. 
 11.4.4 Neither Party
shall have the right independently to seek recourse from a court of law or other authorities in lieu of arbitration, but each Party has the right before or during the arbitration to seek and obtain from the appropriate court provisional remedies to
avoid irreparable harm, maintain the status quo or preserve the subject matter of the arbitration. There shall be a stenographic record of the proceedings. The decision of the arbitrator shall be final and binding upon both Parties. The arbitrator
shall render a written opinion setting forth findings of fact and conclusions of law. 
 11.4.5 The
expenses of the arbitration shall be borne by the Parties in proportion as to which each Party prevails or is defeated in arbitration. Each Party shall bear the expenses of its counsel and other experts. 

11.5 Equitable Relief. Notwithstanding anything to the contrary, each of the Parties hereby acknowledges that a breach of their
respective obligations under this Agreement may cause irreparable harm and that the remedy or remedies at law for any such breach may be inadequate. Each of the Parties hereby agrees that, in the event of any such breach, in addition to all other
available remedies hereunder, the non-breaching Party shall have the right to seek equitable relief to enforce the provisions of this Agreement. 
 ARTICLE 12 
 MISCELLANEOUS; NON-COMPETITION 

12.1 Governing Law and Jurisdiction. The validity, construction and performance of this Agreement will be governed by and
construed in accordance with the substantive laws of the State of Delaware excluding any conflicts or choice of law rule or principle that might otherwise refer construction or interpretation of this Agreement to the substantive law of another
jurisdiction. 
 12.2 Force Majeure. Neither Party shall be held liable or responsible to the other Party nor be deemed
to have defaulted under or breached this Agreement for failure or delay in fulfilling or performing any term, other than an obligation to make payments hereunder, when such failure or delay is caused by or results from fire, floods, embargoes,
government regulations, prohibitions or interventions, war, acts of war (whether war be declared or not), insurrections, riots, civil commotions, acts of God or any other cause beyond the reasonable control of the affected Party to anticipate,
prevent, avoid or mitigate (a “Force Majeure Event”); provided, however, that any failure or delay in fulfilling a term shall not be considered a result of a Force Majeure Event if it arises from a failure of Mascoma or Longyear to
comply with applicable Laws. 

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 12.3 Further Assurances. Each Party hereto agrees to perform such acts, execute
such further instruments, documents or certificates, and to provide such cooperation in proceedings and actions as may be reasonably requested by the other Party in order to carry out the intent and purpose of this Agreement, including the
registration or recordation of the rights granted hereunder. 
 12.4 Notices. Any notice required or permitted to be
given hereunder shall be in writing and shall be deemed to have been properly given if delivered in person by a internationally recognized overnight courier, or by facsimile (and promptly confirmed an overnight courier), to the addresses given below
or such other addresses as may be designated in writing by the Parties from time to time during the Term. Any notice sent by internationally recognized overnight courier as aforesaid shall be deemed to have been given three (3) days after being
sent. 
 In the case of Longyear: 
 J.M. Longyear, L.L.C. 
 Longyear Building 

210 North Front Street, 1st Floor 
 Marquette, MI 49855 
 Attention: Stephen J. Hicks 

Fax: (906)228-9499 
 With a copy to: 
 Gray, Plant, Mooty, Mooty & Bennett, P.A. 

500 IDS Center 

80 South Eighth Street 
 Minneapolis, MN 55402 
 Attention: William D. Klein, Esq. 

Facsimile: (612) 632-3232 
 Telephone: (612) 632-4232 
 In the case of Mascoma: 

Mascoma Corporation 
 1380 Soldiers Field Road 
 Boston, MA 02135 

Attention: Bruce Jamerson 
 Facsimile: (617) 868-0408 
 With a copy to: 

Legal Department [at the same address] 
 12.5 Assignment. This Agreement may not be assigned or otherwise transferred by either Party, without the written consent of the other Party such consent not to be unreasonably withheld,
conditioned or delayed; provided, however, that Mascoma may, without such consent, assign this Agreement, in whole or in part, (i) to any of its Affiliates (provided the assigning 

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Party continues at all times to remain liable for all obligations of such Party under this Agreement without regard to such assignment) and (ii) whether by contract or operation of law, to a
Third Party successor or purchaser of all or substantially all of its business or assets to which this Agreement relates, whether in a merger, sale of stock, sale of assets or other similar transaction. Any permitted assignee shall assume all
obligations of its assignor under this Agreement. The rights and obligations of the parties under this Agreement shall be binding upon and inure to the benefit of the successors and permitted assigns of the parties. Any assignment not in accordance
with this Agreement shall be void. 
 12.6 Affiliate Performance. Any obligation of any Party under or pursuant to this
Agreement may be satisfied, met or fulfilled, in whole or in part, either by such Party directly or by any Affiliate of such Party that such Party causes to satisfy, meet or fulfill such obligation, in whole or in part. 

12.7 Amendment. The Parties hereto may amend, modify or alter any of the provisions of this Agreement, but only by a written
instrument duly executed by the Parties hereto. 
 12.8 Entire Agreement. This Agreement, along with all schedules and
exhibits attached hereto, contains the entire understanding of the Parties with respect to the subject matter hereof and supersedes all prior agreements, whether written or oral. Each Party confirms that it is not relying on any representations,
warranties or covenants of the other Party except as specifically set out in this Agreement. 
 12.9 No Benefits To Third
Parties. The provisions of this Agreement are for the sole benefit of the Parties and their successors and permitted assigns, and they shall not be construed as conferring any rights in any other Persons. 

12.10 United States Dollars. All dollar ($) amounts specified in this Agreement are United States dollar amounts. 

12.11 Waiver. The failure of a Party to enforce at any time for any period any of the provisions hereof shall not be construed as
a waiver of such provisions or of the rights of such Party thereafter to enforce each such provision. 
 12.12 No Implied
Licenses. Except as expressly and specifically provided under this Agreement, the Parties agree that neither Party is granted any implied rights to or under any of the other Party’s current or future patents, trade secrets, copyrights,
moral rights, trade or service marks, trade dress, or any other intellectual property rights. 
 12.13 Relationship of the
Parties. The Parties agree that their relationship established by this Agreement is that of independent contractors. Furthermore, the Parties agree that this Agreement does not, is not intended to, and shall not be construed to, establish a
partnership or joint venture, and nor shall this Agreement create or establish an employment, agency or any other relationship. Except as may be specifically provided herein, neither Party shall have any right, power or authority, nor shall they
represent themselves as having any authority to assume, create or incur any expense, liability or obligation, express or implied, on behalf of the other Party, or otherwise act as an agent for the other Party for any purpose. 

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 12.14 Severability. If any provision of this Agreement is held
unenforceable by a court or tribunal of competent jurisdiction in a final unappealable order because it is invalid or conflicts with any Law of any relevant jurisdiction, then such provision shall be inoperative in such jurisdiction and the
remainder of this Agreement shall remain binding upon the Parties hereto. 
 12.15 Interpretation. 

12.15.1 General. Unless the context of this Agreement otherwise requires, (a) words of one gender include the
other gender; and (b) words using the singular or plural number also include the plural or singular number, respectively. Whenever this Agreement refers to a number of days, unless otherwise specified, such number shall refer to calendar days.

 12.15.2 Other Definitional and Agreement References. References to any agreement, contract, statute,
act or regulation are to that agreement, contract, statute, act, or regulation as amended, modified or supplemented from time to time in accordance with the terms hereof and thereof. 

12.15.3 Capitalization. Any capitalized terms used in any Exhibit or Schedule but not otherwise defined therein,
shall have the meaning as defined in this Agreement. 
 12.15.4 Date References. References from or
through any date mean, unless otherwise specified, from and including or through and including, respectively. 

12.15.5 Schedules and Exhibits. All Schedules and Exhibits annexed hereto or referred to herein are hereby
incorporated in and made a part of this Agreement as if set forth in full herein. 
 12.15.6 Person
References. References to any Person include the successors and permitted assigns of that Person. 

12.15.7 References to Parts of this Agreement. References to Articles, Sections, Schedules, and Exhibits are to
Articles, Sections, Schedules, and Exhibits of this Agreement unless otherwise specified. 
 12.15.8 Other
Definitional and Interpretative Provisions. The words “hereof, “herein” and “hereunder” and words of like import used in this Agreement shall refer to this Agreement as a whole and not to any particular provision of this
Agreement. Whenever the words “include”, “includes” or “including” are used in this Agreement, they shall be deemed to be followed by the words “without limitation”, whether or not they are in fact followed by
those words or words of like import. “Writing”, “written” and comparable terms refer to printing, typing and other means of reproducing words (including electronic media) in a visible form. 

12.16 Headings. The Article and Section headings contained in this Agreement are for reference purposes only and shall not affect
in any way the meaning or interpretation of this Agreement. 

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 12.17 Expenses. Except as otherwise expressly provided in this Agreement, each
Party shall pay the fees and expenses of its respective lawyers and other experts and all other expenses and costs incurred by such Party incidental to the negotiation, preparation, execution and delivery of this Agreement. 

12.18 Counterparts. This Agreement may be executed in any number of counterparts (including by facsimile), each of which shall be
deemed an original, but all of which together shall constitute one and the same document. 
 12.19 Non-Competition.

 12.19.1 For so long as Longyear (which for purposes of this Section 12.19 includes any Affiliate
of Longyear) is a Member of the Company and for a period of five years thereafter (the “Noncompetition Period”), Longyear will not, without Mascoma’s prior written consent, which consent may be provided or withheld at the sole
discretion of Mascoma, directly or indirectly, engage or invest in, own, manage, operate, finance, control or participate in the ownership, management, operation, financing or control of, be employed by, associated with or in any manner connected
with, or render services or advice or other aid to, or guarantee any obligation of, any Person engaged in or planning to become engaged in, any industry or business whose products or activities compete or could reasonably be expected to compete in
whole or in any material part with the Project or otherwise be involved in the research, development, or commercialization of technology involving, and products produced by, the conversion of cellulosic biomass into fuel and/or other chemical
products or compounds. This restriction applies anywhere in the world. The foregoing will not preclude Longyear from purchasing or otherwise acquiring up to (but not more than) three percent (3%) of any class of securities of any enterprise
(but without otherwise participating in the activities of such enterprise) if such securities are listed on any national or regional securities exchange or have been registered under Section 12(g) of the Securities Exchange Act of 1934.

 12.19.2 Notwithstanding anything in this Agreement to the contrary, Longyear will be free to sell or
broker timber to third parties; provided, however, that for so long as Longyear is a Member of the Company and for a period of three years thereafter, Longyear shall not be permitted to sell or broker Frontier Biomass to any third party within a
100-mile radius of the location of the Project For purposes of this Section 12.19.2, “Frontier Biomass” means, as of any date of determination, timber products and species and other biomass then used by the Company in the
commercial operation of the Project for production of fuel or other compounds from biomass. 
 12.19.3
Longyear agrees that Section 12.19 of this Agreement is reasonable with respect to its duration, geographical area and scope. In the event of a breach by Longyear of any covenant set forth in Section 12.19, in addition to any remedies
Mascoma may have, the term of such covenant will be extended by the period of the duration of such breach. 
 [Signature Page
Follows] 

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 IN WITNESS WHEREOF, Mascoma, Longyear and Frontier have caused this Agreement to be duly
executed by their authorized representatives under seal, in duplicate on the Effective Date. 
  

									
	MASCOMA CORPORATION	 		 	J.M. LONGYEAR, L.L.C. 
					
	By:	 	/s/ Bruce Jamerson	 		 	By:	 	/s/ Stephen J. Hicks
	Name:	 	Bruce Jamerson	 		 	Name:	 	Stephen J. Hicks
	Its:	 	CEO	 		 	Its:	 	CEO

  

			
	FRONTIER RENEWABLE RESOURCES, LLC
		
	By:	 	/s/ Stephen J. Hicks
	Name:	 	Stephen J. Hicks
	Its:	 	COO

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 SCHEDULE 1.13 

PROJECT CONSTRUCTION PHASE 
 Projected Start: [***] 
 Projected Completion: [***] 

This phase of the Project would entail the following general activities: 

 

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

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 SCHEDULE 1.14 

PROJECT DEVELOPMENT PHASE 
 Projected Start: [***] 
 Projected Completion: [***] 

This phase of the Project will entail the following general activities: 

 

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  
 2 

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 SCHEDULE 1.15 

PROJECT FINANCING PHASE 
 Projected Start: [***] 
 Projected Completion: [***] 

This phase of the Project would entail the following general activities: 

 

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

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 SCHEDULE 1.16 

PROJECT FORMATION PHASE 
 Projected Start: [***] 
 Projected Completion: [***] 

This phase of the Project will entail the following general activities: 

 

	 	•	 	 [***] 

  

	 	•	 	 [***] 

  

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 SCHEDULE 1.20 

TRANSACTION DOCUMENTS 
 Such agreements and instruments as the Company, its Members and their Affiliates subsequently determine and agree are necessary to enable the deployment of their respective scientific, technical and
operational capabilities. Such agreements and instruments shall contain appropriate confidentiality, intellectual property and commercial terms to carry out the purposes of the collaboration and shall be in form and substance acceptable to each of
the parties thereto. Each time such an agreement or instrument is entered into, the parties to this Agreement shall amend this Schedule 1.20 to reflect the entering into of such agreement or instrument. 

  
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SCHEDULE 9.6 

INSURANCE 
 LIABILITY
COVERAGE: 
  

					
	 Each Occurrence
	  	$	1,000,000	  
	 General Aggregate 
	  	$	2,000,000	  

  
 6Limited Liability Company Operating Agreement of Frontier

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 Exhibit
10.12 
 EXECUTION COPY 
 LIMITED LIABILITY COMPANY OPERATING AGREEMENT 
 OF 

FRONTIER RENEWABLE RESOURCES, LLC 
 THIS LIMITED LIABILITY COMPANY OPERATING AGREEMENT (the “Agreement”), dated as of December 15, 2008, is entered into by and among FRONTIER RENEWABLE RESOURCES, LLC (the
“Company”); MASCOMA CORPORATION, a corporation organized and existing under the laws of the State of Delaware (“Mascoma”); and J.M. LONGYEAR, L.L.C., a Michigan limited liability company being
organized hereby under the laws of the State of Michigan (“Longyear”). Mascoma and Longyear are also hereinafter sometimes individually referred to as the “Member” or collectively as the
“Members.” 
 W I T N E S S E T H: 

WHEREAS, the Members have formed the Company as a limited liability company under and pursuant to provisions of the
Delaware Limited Liability Company Act, as amended (the “LLC Act”), by the filing of a Certificate of Formation (the “Certificate”) in the office of the Secretary of State of the State of Delaware
(with the date of such filing of the Certificate with the State of Delaware being the “Date of Commencement”); and 
 WHEREAS, the Members desire to set forth their understandings with respect to the ongoing operations of the Company and their respective rights and obligations; 

WHEREAS, on the date hereof, the parties have entered into a certain Collaboration Agreement between the Company and the
Members (or Affiliates thereof) (the “Collaboration Agreement”); and 
 WHEREAS, each
Member agrees to make certain contributions in cash, in kind, or in services to the Company; which contributions may be credited to the Member’s Capital Account in accordance with the terms of this Agreement. 

NOW, THEREFORE, in consideration of the mutual promises herein contained and intending to be legally bound
hereby, the Company and the Members agree as follows: 
 SECTION 1. FORMATION OF THE COMPANY 

1.1 Formation. The Members, by execution of this Agreement, hereby agree to form the Company as a limited liability company
under and pursuant to the provisions of the LLC Act and upon the terms and conditions set forth in this Agreement. The parties intend that the Company will be taxable as a partnership for United States federal income tax purposes. The parties agree
that the rights, duties and liabilities of the Members, Directors (as defined herein) and Officers (as defined below) shall be as provided in the LLC Act, except as otherwise provided herein. 

1.2 Company Name; Registered Office. The Members hereby agree that the name of the Company shall be Frontier
Renewable Resources, LLC, until such time as the Members shall unanimously agree otherwise. The initial address of the Company’s registered office and agent for service of process in Delaware shall be the office and the agent designated on the
Certificate. 

  
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1.3 Purpose and Powers of the Company. 

(a) The purposes of the Company are to: 

(i) develop and operate an integrated facility within the State of Michigan that includes a commercial scale cellulosic
fuel production facility, and may also include a lumber milling facility and a biomass power facility (collectively, the “Project”); 
 (ii) promote, support and carry out the commercialization of technology related to the production of cellulosic fuel; and 

(iii) do such other things and acts in furtherance of and consistent with such purpose and such other acts as may be
conducted by a limited liability company formed under the LLC Act. 
 (b) The Company shall have and may exercise
all the powers and privileges to the fullest extent permitted by law as are necessary, appropriate, advisable, desirable or incidental to the conduct, promotion or attainment of the purpose of the Company. 

1.4 Company Place of Business. The principal executive offices and place of business of the Company shall be at such place
as the Board of Directors (the “Board”) shall establish, and the Board may from time to time change the location of the principal executive office of the Company to any other place within or without the State of Delaware.

 1.5 Authorized Person. The Chief Executive Officer of the Company is hereby designated as the authorized person
to act on behalf of the Company to execute, deliver and file any amendments to the Certificate of Formation approved in accordance with this Agreement with the Secretary of State of the State of Delaware. 

1.6 Qualification in Other Jurisdictions. The Chief Executive Officer shall cause the Company to be qualified or registered
in any jurisdictions in which the Company transacts business, and if necessary or desired, under assumed or fictitious name statutes or similar laws in other jurisdictions in which the Company transacts business. The Chief Executive Officer shall
have the authority to execute, deliver and file any certificates (and any and all amendments thereof) necessary for the Company to qualify to do business in the jurisdictions in which the Company may wish to conduct business, as determined by the
Board. 
 1.7 Duration of the Company. The Company shall commence as of the Date of Commencement and shall
continue until dissolved in accordance with the provisions of Section 14. 
 SECTION 2. MEMBERS; OWNERSHIP INTEREST; INITIAL CAPITAL
CONTRIBUTIONS TO THE COMPANY; ADDITIONAL CAPITAL CONTRIBUTIONS; PAYMENT OF CERTAIN LIABILITIES 
 2.1 Mascoma.
The name, business address, Initial Contribution, and initial Percentage Interest (as defined below) of Mascoma are as provided in Exhibit A hereto. A Member’s Percentage Interest, together with all other rights of such Member
in the Company, are hereinafter referred to herein individually as an “Interest” and collectively as the “Interests.” 

  
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2.2 Longyear. The name, business address, Longyear Initial Capital Contribution and Longyear initial Percentage Interest are
as provided in Exhibit A. 
 2.3 Percentage Interests. For the purposes of this Agreement, the term
“Percentage Interest” means, with respect to any Member as of any date, such Member’s proportionate interest in the gains, profits, and losses of the Company, nonliquidating distributions from the Company, and such other
rights and obligations as are specified in this Agreement. The Percentage Interest of each of the Members shall be subject to adjustment, if any, solely in accordance with the terms of this Agreement. 

2.4 Reimbursement of Organizational Expenses. The Members recognize that each Member has accumulated certain
documented out-of-pocket expenses (the “Organizational Expenses”) summarized in Schedule 2.4 hereto in connection with the organization and formation of the Company. The Organizational Expenses are reimbursable
in cash by the Company within 30 days of the date of the Company’s initial receipt of Capital Contributions of cash in an amount exceeding $1,000,000 (the “Contributions Commencement Date”). 

2.5 Additional Capital Contributions; Nonassessability. 

(a) No Member will be required to make any Capital Contribution in excess of its Initial Capital Contribution unless such
Member has agreed to make such Capital Contribution pursuant to the terms of this Agreement or any other agreement with the Company to which such Member is a party. If the Board, by a Required Vote, (a) determines that additional funds are
required or desired for proper business purposes of the Company or (b) approves a budget that contemplates additional funds for the operation of the Company to be funded by additional Capital Contributions, then each Member shall make
additional Capital Contributions as provided by the Board thereby pro-rata in accordance with Percentage Interests. In such event, the Chief Executive Officer will cause written notice of such capital call to be delivered to all Members, specifying
the amount required from each Member and the time or time(s) for payment. Each Member shall make additional Capital Contributions in the amounts and at the times specified in such notice. Any call for additional Capital Contributions may be
rescinded or postponed at any time prior to the due date therefor by a Required Vote of the Board. Members shall be obligated to make payment in full of each required additional Capital Contribution, and such Member shall not make (nor shall the
Company be obligated to accept) any partial payments of any required additional Capital Contributions. For the purposes of this Agreement, the term “Capital Contribution” shall mean, with respect to a Member, the total amount
of cash and the fair market value as determined in good faith by the Board of property contributed to the capital of the Company, including without limitation the Initial Capital Contribution and any contributions made pursuant to this
Section 2.5. 
 (b) If the Board, by majority vote, determines that the Company requires additional
capital to finance the business and operations of the Company and the provisions of Section 2.5(a) are not utilized, the Company may, subject to the other provisions of this Section 2.5, issue additional
Interests with such Percentage Interests, rights and preferences as the Board determines to be appropriate and in the best interests of the Company under the circumstances (the “Additional Interests”); provided that the
Capital Contributions required for such Additional Interests shall be based upon and reflect the fair market value of the existing Interests at the time of the decision to issue Additional Interests as determined in the reasonable good faith
judgment of the Board. The Board is hereby authorized to make any amendments to this Agreement the Board reasonably and in good faith deems necessary or appropriate in connection with the issuance of the Additional Interests (including, without
limitation, expanding 

  
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the size of the Board to grant seats on the Board to the purchasers of the Additional Interests). Upon the closing of the sale of the Membership Interests, the Percentage Interests of the Members
will be adjusted to reflect the issuance of the Membership Interests. 
 (c) Subject to
Section 2.5(e), the Company shall issue, sell or exchange, or agree to issue, sell or exchange (collectively, “Issue,” and any issuance, sale or exchange resulting therefrom, an
“Issuance”) any Membership Interests only if the Company shall have first given written notice (the “Section 2.5 Offer Notice”) to each of Longyear (provided it is then a Member) and Mascoma (provided
it is then a Member) (each a “Preemptive Holder”) which shall (a) state the Company’s intention to Issue Additional Interests, the amount to be Issued, the terms of such securities, the purchase price therefor and a
summary of the other material terms of the proposed Issuance and (b) offer (a “Preemptive Offer”) to Issue to each Preemptive Holder up to such Preemptive Holder’s Pro Rata Share (as defined below) of such Interests
(with respect to each Preemptive Holder, the “Offered Securities”) upon the terms and subject to the conditions set forth in the Section 2.5 Offer Notice, which Preemptive Offer by its terms shall remain open for a
period of 30 days from the date it is delivered by the Company to the Preemptive Holder (and, to the extent the Preemptive Offer is accepted during such 30-day period, until the closing of the Issuance of Membership Interests contemplated by the
Preemptive Offer). “Pro Rata Share,” for purposes of this Section 2.5, shall mean the Percentage Interest held by such Preemptive Holder immediately prior to the issuance of the Section 2.5 Offer
Notice. 
 (d) Notice of a Preemptive Holder’s intention to accept a Preemptive Offer, in whole or in part,
shall be evidenced by a writing signed by the Preemptive Holder and delivered to the Company prior to the end of the 30-day period of such Preemptive Offer (each, a “Section 2.5 Notice of Acceptance”), setting forth such
portion of the Offered Securities that the Preemptive Holder elects to purchase. 
 (e) (i) In the event that a
Section 2.5 Notice of Acceptance is not given by a Preemptive Holder accepting all the Offered Securities, the Company shall have 90 days (or the period required for completion of all required regulatory approvals, so long as a binding
agreement with respect to such Issuance is entered into within such 90-day period) following the earlier of (A) delivery of the Section 2.5 Notice of Acceptance and (B) the expiration of the 30- day period referred to in
Section 2.5(d) above if no Section 2.5 Notice of Acceptance is delivered, to Issue all or any part of such remaining Offered Securities not covered by the Section 2.5 Notice of Acceptance (the “Section 2.5
Remaining Interests”) to any other Person or Persons, but only at the price and upon the payment terms set forth in the Section 2.5 Offer Notice and on such other terms and conditions as are no more favorable, in the aggregate, to
such other Person or Persons or less favorable, in the aggregate, to the Company than those set forth in the Section 2.5 Offer Notice. 
 (ii) If the Company does not consummate the Issuance of all or part of the Section 2.5 Remaining Interests to such other Person or Persons within the 90-day period referred to in
Section 2.5(d) above, the rights provided hereunder shall be deemed to be revived and such securities shall not be offered unless first reoffered to the Preemptive Holders in accordance with this Section 2.5.

 (iii) Upon the closing of the Issuance to such other Person or Persons (the “Other
Buyers”) of all or part of the Remaining Securities, the Preemptive Holder shall purchase from the Company, and the Company shall Issue to the Preemptive Holder, the Offered Securities covered by the Section 2.5 Notice of
Acceptance delivered to the Company by the 

  
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Preemptive Holder, on the terms specified in the Preemptive Offer. The purchase by the Preemptive Holder of any Offered Securities is subject in all cases to the execution and delivery by the
Company and the Preemptive Holder of a purchase agreement relating to such Offered Securities in form and substance similar in all material respects to the extent applicable to that executed and delivered between the Company and the Other Buyers and
the Company shall record such Membership Interests on the books of the Company on such date against payment of the purchase price for such Membership Interests. 
 (f) The Company shall, as a condition to the Issuance, require any Other Buyers of Additional Interests to execute, and agree to be bound by the terms of this Agreement, and upon such execution and
Issuance each such Other Buyer shall thereafter be deemed a Member. 
 2.6 Payment of Certain Liabilities.

 (a) From time to time employees of Longyear or Mascoma, or their respective Affiliates, may provide services
to the Company (with respect to such services, the “Service Provider”) pursuant to and in accordance with the terms of a written agreement with the Company approved by the Board by a Required Vote (each, a “Service
Agreement”). The value (as determined in accordance with the provisions of the applicable Service Agreement) of such services shall constitute a liability of the Company (a “Service Liability”) payable on the
date set forth in such Service Agreement (the “Stated Payment Date”); provided, however, (i) that the Board, acting pursuant to a Required Vote, shall have the right, but not the obligation, to pay all or
any portion of any Service Liability accrued prior to a Stated Payment Date at any time the Company has “Excess Cash” (as hereinafter defined), and (ii) notwithstanding anything to the contrary in any Service Agreement, all then
outstanding Service Liabilities shall be immediately due and payable upon the occurrence of a “Trigger Date” (as hereinafter defined). 
 (b) As used in this Section 2.6 the words and phrases that follow shall have the respective meanings that follow: 

(i) “Change of Control” means the first to occur of any of the following events: 

(A) The consummation of a reorganization, merger, ownership interest exchange, consolidation, or sale or disposition of
all or substantially all of the assets of the Company unless, in any such case, where the Persons who beneficially own the Percentage Interests of the Company immediately before that transaction beneficially own (within the meaning of Rule 13d-3
promulgated under the Securities Exchange Act of 1934, as amended), directly or indirectly, immediately after the transaction, at least 75% of the Percentage Interests of the Company or any other corporation or other entity resulting from or
surviving the transaction (including a corporation or other entity which, as the result of the transaction, owns all or substantially all of the Percentage Interests of the Company or all or substantially all of the Company’s assets, either
directly or indirectly through one or more subsidiaries). 
 (B) Approval by the Board of a complete liquidation
or dissolution of the Company. 
 (ii) “Event of Bankruptcy” means, with respect to the
Company or a Member: (A) the filing of a voluntary petition seeking liquidation, reorganization, arrangement or readjustment, in any form, of its debts under Title 11 of the United States Code or any other

  
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federal or state insolvency law, or the filing of an answer consenting to or acquiescing in any such petition; (B) the making of any
general assignment for the benefit of its creditors, or the admission in writing of its inability to pay debts as they become due; (C) the expiration of sixty (60) days after the filing of an involuntary petition under Title 11 of the
United States Code, an application for the appointment of a receiver for its assets, or an involuntary petition seeking liquidation, reorganization, arrangement or readjustment of its debts under any other federal, state or foreign insolvency law,
provided that the same shall not have been vacated, set aside or stayed within such sixty (60) day period; (D) the appointment of a receiver, liquidator, assignee, custodian, trustee, sequestrator, or other similar agent for it or for any
substantial part of its assets or property; and (E) the ordering of the winding up or liquidation of its affairs. 
 (iii) “Excess Cash” means, at any time, that portion of the cash and cash equivalent assets of the Company which the Board determines in its reasonable discretion exceeds the
amount of cash needed by the Company to (i) pay the Tax Distribution, (ii) remain “solvent”, (iii) maintain adequate working capital and reserves, and (iv) conduct its business and carry out its purposes. In making this
determination, the Board shall take into account the Company’s then current and foreseeable sources of, and needs for, cash. For the purposes of this definition, the Company is “solvent” if it its capable of paying its debts as they
become due in the usual course of business or the value of its assets are equal to or greater than the sum of its liabilities. This definition of the term “solvent” is intended to override, to the extent permitted under the LLC Act.

 (iv) “Trigger Date” means that date on which any of the following first occurs:

 (A) an equity or debt financing pursuant to which the Company receives at least $20,000,000 in gross
proceeds; 
 (B) a Change of Control; 

(C) an Event of Bankruptcy; 
 (D) at any time the Board determines in its reasonable discretion that funds are available therefor and elects to pay off such liabilities; or 

(E) upon the exercise of the rights set forth in Section 14.2 or Section 14.3.

 (c) Payments of Service Liabilities pursuant to this Section 2.6 shall be made in cash and
may be made from any source; provided they do not violate any agreement that the Company has with any of its creditors or any provision of the LLC Act. 
 2.7 Status of Capital Contributions. No return of a Member’s Capital Contributions shall be made hereunder if such distribution would violate applicable state law. Where Capital
Contributions are to be returned to a Member, the Member shall not have the right to demand or receive property other than cash, except as may be specifically provided in this Agreement. No interest will be paid to any Member on Capital
Contributions. No Member shall have any personal liability for the repayment of any Capital Contribution of any other Member. No Member shall be entitled to interest on any Capital Contribution or on the balance of such Member’s Capital
Account. For the purposes of this Agreement, the term “Capital Account” 

  
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shall mean, with respect to a Member, the account of a Member established and maintained in accordance with the provisions of Section 9.1 hereof. 

2.8 Company Borrowings. 
 (a) Loans From Third Parties. The Company will be authorized to borrow from recognized banks or financial institutions and other lenders who are not Affiliates of any Members of the Company,
at such times and on such terms as the Board approves. The Members hereby agree that if required under the terms of any financing arrangement hereunder, they shall pledge their Percentage Interests to such bank, financial institutions or other
lenders providing the loans to the Company. 
 (b) Loans from Members to Company. Subject to any
other restrictions contained herein, the Company may borrow money from one or more Members or Affiliates of Members at such interest rate or rates and upon such other terms as are agreed upon by the Company and the lending Member; provided that the
interest rates on any such loans may not exceed the rates that would apply to Company borrowing on similar terms from recognized banks or financial institutions and the terms are otherwise similar to those terms that would be expected to be achieved
in an arms-length transaction, in each case as determined in good faith by the Board. 
 SECTION 3. AUDITORS; INSURANCE 

3.1 Auditors. The Board, by a Required Vote, shall select the Company’s independent certified public accountants within
30 days of the day hereof. 
 3.2 Insurance. The Company shall maintain, with insurers or underwriters of
good repute, property and casualty, general liability and other insurance relating to the operations of the Company in accordance with reasonably prudent business practice and as a majority of the Board shall have agreed upon, and pay all premiums
and other sums payable in respect of maintaining such insurance. The Company shall regularly review insurance coverage and adjust the type and amount of coverage in accordance with such prudent business practices and as agreed upon by a majority of
the Board. 
 SECTION 4. RIGHTS, POWERS AND DUTIES OF THE MEMBERS; Limitation on LIABILITY OF THE MEMBERS 

4.1 Authority of the Members. 
 (a) The Members hereby consent to the exercise by the Board or its designees of the rights, powers and authority conferred on the Board by this Agreement. 

(b) Except as otherwise provided by the LLC Act, the debts, expenses, obligations and liabilities of the Company, whether
arising in contract, tort or otherwise, shall be solely the debts, expenses, obligations and liabilities of the Company, and no Member or its Affiliates shall be obligated personally for any such debt, expense, obligation or liability of the Company
solely by reason of being a Member or being an Affiliate of a Member. All Persons dealing with the Company shall have recourse solely to the assets of the Company for the payment of the debts, obligations or liabilities of the Company. In no event
shall any Member be required to make up any deficit balance in such Member’s Capital Account upon the liquidation of such Member’s Interest or otherwise. In addition, no Member or Affiliate shall be liable for

  
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the obligations of the Members or the Company by virtue of the fact that one or more officers, directors or employees of such Member or Affiliate is appointed to serve on the Board pursuant to
Section 5.1 or is designated as an Officer of the Company pursuant to Section 6.1, or for any acts or omissions of such Persons in such capacities. 

(c) Except as expressly provided in this Agreement, no Member (in its capacity as a Member) shall take part in or
interfere in any manner with the management of the business and affairs of the Company or have any right or authority to act for or bind the Company notwithstanding Section 18-402 of the Act, and the Members (in their capacity as Members) shall
have only the rights and powers granted to the Members under this Agreement. 
 4.2 Voting Rights; Required Member
Consents. 
 (a) No Member has any voting right except with respect to those matters specifically
reserved for a Member vote which are set forth in this Agreement and as required in the LLC Act. 
 (b)
Notwithstanding any other provision of this Agreement, without the prior consent of all of the Members, which consent shall be obtained in accordance with the procedures set forth in Section 7.1, the Company shall not: 

(i) commit any act in contravention of this Agreement; 

(ii) perform any act that would subject any Member to liability in any jurisdiction in virtue of their status as a Member
of the Company; or 
 (iii) commit any other act requiring the prior consent of the Members under this Agreement.

 (c) No funds of the Company shall be kept in any account other than a Company account nor shall any funds be
commingled with the funds of any other Person, and the Board shall not employ, or permit any other Person to employ, funds of the Company in any manner except for the benefit of the Company. 
 SECTION 5. RIGHTS, POWERS AND DUTIES OF THE BOARD; LIMITATION OF LIABILITY OF DIRECTORS 
 5.1 Board of Directors. Pursuant to the authority granted to it in Section 4.1, the Members hereby vest the management of the Company in the Company’s board of
directors (the “Board”). The Board shall manage the business and affairs of the Company on behalf of the Members, consistent with this Agreement and applicable law. The Board shall initially consist of five (5) members
designated by the Members in accordance with this Section 5.1 (each such person shall be hereinafter referred to as a “Director”). A Director may be any natural person who may, but need not be, an employee
of the Company, Mascoma or Longyear, or Affiliates thereof; provided, however, that at least one (1) of the Directors appointed by Mascoma shall be a senior executive of Mascoma and at least one (1) of the Directors appointed by Longyear
shall be a senior executive of Longyear. 
 (a) The Board shall initially consist of: 

  
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(i) four (4) individuals appointed by Mascoma, which individuals shall initially be Bruce Jamerson and three
(3) other individuals appointed by Mascoma; and 
 (ii) one individual appointed by Longyear, which
individual shall initially be Steve Hicks. 
 (b) The Chairman of the Board shall be elected by the Board, which
individual shall initially be Bruce Jamerson. 
 (c) A Director shall remain in office until his resignation or
removal. A Director may be removed at any time, with or without cause, solely by and at the sole discretion of the Member that designated such Director. Such Member may designate a different individual as the replacement for the removed Director. In
the case of the death, resignation or removal of a Director, the Member that appointed the Director whose death, resignation or removal is the cause of the vacancy may designate the replacement to fill the vacancy. 

5.2 Meetings of the Board. 
 (a) Regular meetings of the Board will be held at least once each calendar quarter, at such times and at such places as shall be fixed by the Board by written notice to each Director in person, by
telephone, or by facsimile, electronic mail or other form of electronic communication, sent to his or her business or home address, or by written notice mailed to his or her business or home address. 

(b) Any Director may call a special meeting of the Board. Unless waived as is herein provided, notice of any special
meeting of the Board of Directors shall be given to each Director in person, by telephone, or by facsimile, electronic mail or other form of electronic communication, sent to his or her business or home address, at least 24 hours in advance of the
meeting, or by written notice mailed to his or her business or home address by overnight courier, at least 48 hours in advance of the meeting. Such notice shall be deemed to be delivered when hand delivered to such address, read to such director by
telephone, deposited in the mail so addressed, with postage thereon prepaid if mailed, dispatched or transmitted if faxed, telexed or telecopied, or when delivered to the telegraph company if sent by telegram. 

(c) Any Director may waive notice of any meeting. Attendance of a Director at a Board meeting in person or by the use of
telephone shall constitute waiver of notice of such Board meeting, except where a Director attends a Board meeting for the express purpose of objecting to the transaction of any business because the Board meeting is not lawfully called or convened.

 (d) Directors may participate in any meeting of the Board by means of conference telephone or similar
communication if all persons participating in such meeting can hear one another for the discussion of the matter(s) to be voted upon. Participating in a meeting pursuant to this Section shall constitute presence in person at such meeting.

 (e) Three Directors shall constitute a quorum for the transaction of business. Any matter which requires the
unanimous consent of the Board pursuant to this Agreement shall require all of the Directors to be present at any Board meeting called for the purposes described therein. If a Board meeting to vote on a matter which requires a unanimous vote of the
Board cannot be held (after two attempts by means of delivery of proper notice) due to lack of a quorum, then such matter shall be determined pursuant to Section 15. 

  
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PURSUANT TO AN APPLICATION FOR CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT; [***] DENOTES OMISSIONS. 
  

(f) Except as otherwise required by this Agreement, decisions of the Board or items set forth in this Agreement to be
determined by the “Board” shall be adopted by the affirmative vote of a majority of the Directors then in office at a meeting, or acting by unanimous written consent. 

5.3 Authority of the Board. 
 (a) Except as expressly provided in this Agreement, all powers to control and manage the business and affairs of the Company shall be exclusively vested in the Board and the Board may exercise all powers
of the Company and do all such lawful acts as are not by statute, the Certificate or this Agreement directed or required to be exercised or done by the Members and in so doing shall have the right and authority to take all actions which the Board of
Directors deems necessary, useful or appropriate for the management and conduct of the business, including exercising the following: 
 (i) conduct its business, carry on its operations and have and exercise the powers granted by the LLC Act in any state, territory, district or possession of the United States, or in any foreign country
which may be necessary or convenient to effect any or all of the purposes for which it is organized; 
 (ii)
acquire by purchase, lease, or otherwise any real or personal property which may be necessary, convenient, or incidental to the accomplishment of the purposes of the Company; 

(iii) operate, maintain, finance, improve, construct, own, grant operations with respect to, sell, convey, assign,
mortgage, and lease any real estate and any personal property necessary, convenient, or incidental to the accomplishment of the purposes of the Company; 
 (iv) execute (but not to the exclusion of any Officer having such power) or authorize an Officer of the Company to execute any and all agreements, contracts, documents, certifications, and instruments,
including without limitation any deed, lease, mortgage, or promissory note, necessary or convenient in connection with the management, maintenance, and operation of the business of the Company, or otherwise in connection with managing the affairs of
the Company, including, executing amendments to this Agreement and the Certificate in accordance with the terms of this Agreement, both as Directors and, if required, as attorney-in-fact for the Members pursuant to any power of attorney granted by
the Members to the Directors. Simultaneously with the execution of this Agreement, one or more of the Directors shall execute the Collaboration Agreement on behalf of the Company; 

(v) cause the Company to engage in any kind of activity and perform and carry out contracts of any kind (including
contracts of insurance covering risks to Company assets and Director liability) necessary or incidental to, or in connection with, the accomplishment of the purposes of the Company, as may be lawfully carried on or performed by a limited liability
company under the LLC Act and the laws of any state in which the Company is then formed or qualified; 
 (vi)
cause to be paid all amounts due and payable by the Company to any Person; 

  
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(vii) employ such agents, employees, managers, accountants, attorneys, consultants and other Persons, including any
Member, necessary or appropriate to carry out the business and affairs of the Company, whether or not any such Persons so employed are affiliated with or related to any Member, and to pay to such Persons such fees, expenses, salaries, wages and
other compensation as it shall in its sole discretion determine; 
 (viii) form such committees as the Board may
deem appropriate; 
 (ix) pay, extend, renew, modify, adjust, submit to arbitration, prosecute, defend or
compromise, upon such terms as it may determine and upon such evidence as it may deem sufficient, any obligation, suit, liability, cause of action or claim, including taxes, either in favor of or against the Company; 

(x) pay any and all fees and make any and all expenditures which it deems necessary or appropriate in connection with the
organization of the Company, the management of the affairs of the Company and the carrying out of its business, obligations and responsibilities under this Agreement; 

(xi) establish and maintain one or more bank accounts for the Company in such bank or banks as the Board may, from time to
time, designate as depositories of the funds of the Company, subject to the provisions of Section 13.5; 
 (xii) to the extent that funds of the Company are, in the judgment of the Board, not immediately required for the conduct of the Company’s business, temporarily deposit the excess funds in such bank
account or accounts, or invest such funds in such interest bearing taxable or nontaxable investments as the Board shall deem appropriate; provided, however, that the Board shall not make any such deposits or investments that would require
registration of the Members or the Company under the Investment Partnership Act of 1940, as amended; and 

(xiii) cause to be paid any and all taxes, charges and assessments that may be levied, assessed or imposed upon any of the
assets of the Company, unless the same are contested by a majority of the Board on behalf of the Company. 
 The Members hereby consent to the
foregoing rights, powers and authority to the Board. 
 (b) The Board may, but is not required to, establish one
or more committees (each, a “Board Committee”) and may delegate certain authority of the Board to such committee of the Board. A Board Committee may be comprised of one or more directors and may include a committee of a
single Director to whom the Chief Executive Officer reports for all matters in the ordinary course of the Company’s business. To the extent this Agreement provides that certain Director(s) must consent to certain specified actions, a Board
Committee shall not have authority to act with respect to such action unless such Director(s) consent to such action. 
 (c) The Company shall not without majority approval of the Board, which approval must include the affirmative vote of at least one of the directors appointed by Mascoma and one of the directors appointed
by Longyear (a “Required Vote”): 
 (i) adopt or approve any business plan, annual budget
or capital budget, or make any material changes thereto; 
 (ii) appoint the initial Chief Executive Officer of
the Company; or 

  
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(iii) affect any material changes to the Collaboration Agreement. 

SECTION 6. OFFICERS 

6.1 Appointment of Officers. The Board shall have the right, power and authority to designate, by a Required Vote, the
initial Chief Executive Officer of the Company, who shall have general supervision and control of the Company and shall have such powers and perform such duties in managing the day-to-day operations of the Company as delegated to such officer by the
Board. In addition, the Board shall have the right, power and authority to designate, in its discretion, other officers, including without limitation a President, Chief Operating Officer, Chief Financial Officer, Secretary, Treasurer, and one or
more vice presidents (collectively, the “Officers,” and each individually, an “Officer”) with such powers and authorities as the Board, in its sole discretion, may determine, and solely to the extent
the Board may determine such designations, powers and authorities are appropriate and desirable. Pursuant to the authority granted to it by the Members pursuant to this Section 6.1, the Board may also from time to time appoint
such other officers as it may deem appropriate. 
 6.2 Authority of the Officers. Subject to the provisions of
this Agreement, unless the authority of an Officer is limited in the document appointing such Officer or is otherwise specified in this Agreement or by the Board, any Officer so appointed shall have the same authority to act for the Company as a
corresponding officer of a Delaware corporation would have to act for a Delaware corporation in the absence of a specific delegation of authority. Any decision or act of an Officer within the scope of the Officer’s designated or delegated
authority shall control and shall bind the Company (and any business entity for which the Company exercises direct or indirect executory authority); provided, however, that unless such power is specifically delegated to the Officer in question
either for a specific transaction or generally in a separate writing, no such Officer shall have the power to lease or acquire real property, to borrow money, to issue notes, debentures, securities, equity or other interests of or in the Company, to
make investments in (other than the investment of surplus cash in the ordinary course of business) or to acquire securities of any Person, to give guarantees or indemnities, to merge, liquidate or dissolve the Company or to sell or lease all or any
substantial portion of the assets of the Company. 
 SECTION 7. RIGHTS OF MEMBERS; ACTIONS OF MEMBERS 

7.1 Procedure for Obtaining Consent. 

(a) Any approval, consent, waiver or vote of the Members required by this Agreement or by the LLC Act may be given by
either: 
 (i) a written approval, consent, waiver or affirmative vote executed by all of the Members to the
other Member or the Board at or prior to the commission of the act or thing for which the approval is solicited, provided that such approval, consent or waiver shall not have been revoked by (A) notification to the Members or the Board, as the
case may be, of such revocation by any Member or negative vote by any Members at or prior to any meeting called to consider such act or thing or (B) notification to the other Members or the Board, as the case may be, of such revocation by any
Member prior to the commission of the act or thing which is subject of the approval, consent or waiver; or 

(ii) the approval, consent, waiver or affirmative vote of all of the Members at any meeting called and held pursuant to
Section 7.1(b). 

  
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(b) Unless notice is waived as is herein provided and allowed, any approval, consent, waiver or vote of the Members
required pursuant to this Agreement or any other matter to come before the Members may be considered at a meeting of the Members held not less than 20 nor more than 60 days after notification of such meeting shall have been given to all of the
Members in accordance with this Section 7.1(b). Such notification shall be given by the Members or the Board within 30 days after receipt by the Members or the Board of a request for such a meeting by any Member. All such meetings
shall be held at such reasonable time and place as the Members or the Board may designate. Any Member may waive notice of any such meeting as to itself. Attendance of a Member at a meeting in person or by use of the telephone shall constitute waiver
of notice of such meeting, except where a Member attends such meeting for the express purpose of objecting to the transaction of any business because the meeting is not properly called or convened. Any such meeting may be held by means of a
conference telephone or similar communication if all persons participating in such meeting can hear one another for the discussion of the matter(s) to be voted upon. 
 SECTION 8. OWNERSHIP INTEREST TRANSFER RESTRICTIONS 
 8.1 Restrictions
on Transfer. The Members hereby agree that no Member shall be permitted to Transfer (as defined below) any or all of its respective Interest except in accordance with this Section 8. Except as otherwise provided in
this Section 8, Section 14.2 or Section 14.3, no Member, may sell, pledge, assign, transfer, hypothecate or otherwise encumber (each, a “Transfer”) its Interest in the
Company to any third party, except with the consent of the other Members, in each such Member’s sole discretion, and on such conditions as each such Member may require; provided, however, that any Member may sell, transfer or
assign all (but not less than all) of its Interest in the Company to an Affiliate of such Member, upon notice to Company and the other Member, so long as such Affiliate agrees to be bound by the terms and conditions of this Agreement and executes a
counterpart signature page to this Agreement pursuant to which it or they agree to be bound by this Agreement. Upon the transfer by a Member of its entire Interest pursuant to this Agreement, such Member shall not cease to be a Member of the Company
until after the admission of such Member’s transferee as a Member of the Company in accordance with this Agreement. 

8.2 Bankruptcy. 
 (a) Each of the Members hereby grants to the other Members an irrevocable option (the “Bankruptcy Option”), which Bankruptcy Option shall be exercisable only upon the
bankruptcy, insolvency, winding-up or liquidation of the granting Member (the “Insolvent Member”), or in the event that a receiver is appointed in respect of the whole or substantially the whole of such Insolvent
Member’s property and assets, or in the event of the transfer or assignment, voluntary or involuntary, by such Insolvent Member of its Interest in the Company to any creditor, in total or partial satisfaction of any debt, obligation, judgment
or other liability (any such assignee, trustee, receiver or transferee is hereinafter referred to as the “Special Transferee” and the other Members are hereinafter referred to as the “Solvent
Members”), to purchase the Insolvent Member’s Interest for a purchase price equal to the fair market value of such Interest (the “Bankruptcy Value”) at that time, as determined by a third party
expert in such matters. Upon the Bankruptcy Option becoming exercisable, the Solvent Members may exercise the Bankruptcy Option by delivering a written notice to the Special Transferee. Each Solvent Member shall have a right to purchase its pro-rata
portion (based on Percentage Interest) with the right of oversubscription of the Special Transferee’s Interest. Payment of the Bankruptcy Value shall be made by the Solvent Members in cash or by certified funds within 180 days from the date of
exercise of the Bankruptcy Option. 

  
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(b) If any of the parties (the “Disagreeing Party”) disagrees with the Bankruptcy Value, the
Disagreeing Party may, within 20 days after its receipt of the Bankruptcy Value (the “Bankruptcy Value Calculation”), deliver a notice to the other party disagreeing with such calculation and setting forth the Disagreeing
Party’s calculation of the Bankruptcy Value. Any such notice of disagreement shall specify those items or amounts as to which the Disagreeing Party disagrees, and the Disagreeing Party shall be deemed to have agreed with all other items and
amounts contained in the Bankruptcy Value Calculation. 
 (c) If a notice of disagreement shall have been
delivered by the Disagreeing Party pursuant to Section 8.2(b), the parties shall, during the 20 days following such delivery, use their best efforts to reach agreement on the disputed items or amounts in order to determine the
Bankruptcy Value, which amount shall not be more than the amount shown in the Bankruptcy Value Calculation nor less than the amount shown in the Disagreeing Party’s notice of disagreement. If, during such period, the parties are unable to reach
agreement, they shall promptly thereafter cause the Accounting Referee (as defined below) promptly to review this Agreement and the disputed items or amounts for the purpose of calculating the Bankruptcy Value. In making such calculation, the
Accounting Referee shall consider only those items or amounts in the Bankruptcy Calculation to which the Disagreeing Party has disagreed. The Accounting Referee shall deliver to both parties, as promptly as practicable, a report setting forth such
calculation. Such report shall be final and binding upon the parties hereto. The cost of such review and report shall be borne equally among the parties. For purposes of this paragraph (c), the term “Accounting Referee” means
an accounting firm (so long as the same is not engaged by any party as its independent auditor) selected jointly by the Company and the Disagreeing Party. 
 8.3 Right of First Refusal. 
 (a) Except as otherwise
provided in Sections 8.1, 8.2, 8.4,14.2 and 14.3, if a Member (other than Mascoma (unless Mascoma proposes to transfer its interest to a direct competitor of Longyear, in which case, Mascoma shall be considered a
Transferring Member hereunder)) wishes to Transfer all or a part of its Interest (a “Transferring Member”), such Member shall first deliver to the offered Member (which shall be Mascoma unless Mascoma is the Transferring
Member, in which case the offered Member shall be Longyear) (the “Offered Member”) a written notice (an “Offer Notice”), which shall (i) state the Member’s intention to sell all or a portion
of its Interest to one or more Persons, the portion of its Interest to be sold (the “Subject Interest”), the purchase price therefor and a summary of the other material terms of the proposed Transfer and (ii) offer the
Offered Member the option to acquire all or a portion of such Subject Interest upon the terms and subject to the conditions of the proposed Transfer as set forth in the Offer Notice (the “Offer”). A Member may submit an Offer
Notice only if such Member has received a bona fide written offer, the terms of which are reflected in the Offer Notice. The Offer shall remain open and irrevocable for the periods set forth below (and, to the extent the Offer is accepted during
such period, until the consummation of the sale contemplated by the accepted Offer). The Offered Member shall have the right and option, for a period of 30 days after its receipt of the Offer Notice (the “Acceptance Period”),
to accept all or any part of the Subject Interest so offered at the purchase price and on the terms stated in the Offer Notice. Such acceptance shall be made by delivering a written notice to the Transferring Member during the Acceptance Period
specifying the portion of the Subject Interest the Offered Member will purchase. 
 (b) If effective acceptance
shall not be received pursuant to Section 8.3(a) above with respect to all of the Subject Interest offered for sale pursuant to the Offer Notice, then the Transferring Member may Transfer all or any portion of its Subject Interest
at a price not less 

  
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than the price, and on terms not more favorable to the purchaser thereof than the terms, stated in the Offer Notice at any time within 30 days after the expiration of the Acceptance Period (the
“Sale Period”). To the extent the Transferring Member Transfers all or, if the Offered Member has accepted the Offer with respect to a part of such Transferring Member’s interest, the remaining portion of the Interest so
offered during the Sale Period, the Transferring Member shall promptly notify the Company, and the Company shall promptly notify the other Members, as to (i) the Interest, if any, that the Transferring Member then owns, (ii) the Interest
that the Transferring Member has transferred, (iii) the terms of such Transfer and (iv) the name of the owner(s) of any of the Interest Transferred. In the event that all of the Subject Interest is not sold by the Transferring Member
during the Sale Period, the right of the Transferring Member to Transfer such unsold Subject Interest shall expire and the obligations of this Section 8.3 shall be reinstated; provided, however, that, in the event that the
Transferring Member determines, at any time during the Sale Period, that the Transfer of all of the Interest on the terms set forth in the Offer Notice is impractical, the Transferring Member may terminate the offer and reinstate the procedure
provided in this Section 8.3 without waiting for the expiration of the Sale Period. 
 8.4 Bring-Along Right

 (a) If at any time, any Third Person (such Person, a “Third Party Purchaser”)
makes a bona fide offer to purchase all or substantially all of the Company or the Interest of Mascoma (a “Sale Transaction”), and Mascoma desires in its sole discretion to accept such offer, then, upon the delivery by
Mascoma to the other Member(s) of 30 days’ written notice (the “Drag-Along Notice”), which Drag-Along Notice shall contain the information set forth below, each such other Member shall be obligated to accept the terms of
such Sale Transaction, take all such steps necessary to approve and facilitate such sale, and shall sell, transfer and deliver, or cause to be transferred, and delivered, to such Third Party Purchaser, its entire Interest on the terms of such Sale
Transaction (and will deliver such Member’s Interest to be transferred at the closing of the transaction, free and clear of all liens, claims, or encumbrances other than any arising pursuant to this Agreement). Each Member shall be allocated
that portion of the aggregate consideration paid by the Third Party Purchaser in the Sale Transaction to all Members that such Member would be allocated if such aggregate consideration were the aggregate amount to be distributed upon a liquidation
of the Company (with respect to each Member, such Member’s “Drag-Along Consideration Amount”). Other than with respect to each Member’s Drag-Along Consideration Amount, such Sale Transaction shall be effected on the
same terms with respect to all Members as those offered to Mascoma and as further set forth in the Drag-Along Notice. The Drag-Along Notice shall set forth the material terms and conditions of the Sale Transaction, including (i) the name and
address of the Third Party Purchaser, (ii) the aggregate consideration to be received by the Members for their Interests, (iii) the terms and conditions of payment offered by the Third Party Purchaser and, in the case of consideration in
whole or in part other than cash, the fair market value thereof as determined in good faith by the Company’s Board, which determination shall be evidenced by a resolution filed with the Company, (iv) a statement that the Third Party
Purchaser has been informed of the rights provided for in this Section 8.4 and has agreed to purchase the Interests in accordance with the terms hereof and to be bound by such terms, and (v) the approximate date, time and location of the
closing of the Transfer of the Interests to the Third Party Purchaser. 
 (b) If Mascoma elects not to deliver to
Longyear a Drag-Along Notice in connection with a Sale Transaction, then if upon the consummation of such Sale Transaction Mascoma shall have a Percentage Interest of less than 10% (without giving effect to the provisions of this
Section 8.4(b)), then Mascoma must provide Longyear the opportunity to Transfer its Interest to such third party on a pro rata basis (the “Tag Along Right”). Each 

  
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Member (as between Mascoma and Longyear) shall be allocated that portion of the aggregate consideration paid by the Third Party Purchaser in the Sale Transaction to such Members in the aggregate
as that Member would be allocated if such aggregate consideration were the aggregate amount to be distributed with respect to the transferred Interests upon a liquidation of the Company (with respect to each such Member, such Member’s
“Tag-Along Consideration Amount”). Other than with respect to each Member’s Tag-Along Consideration Amount, such Sale Transaction shall be effected on the same terms with respect to all Members participating in such Sale
Transaction as those offered to Mascoma and as further set forth in the Drag-Along Notice. Mascoma must give Longyear notice of the closing of Sale Transaction to which a Tag Along Right relates at least 30 days before the proposed closing (the
“Tag Along Notice”). The Tag Along Notice must set forth the identity of the third party, the sale price, and all other material terms and conditions of the offer. If Longyear desires to exercise its Tag Along Right, then
Longyear must give notice of exercise to Mascoma no later than 15 days after delivery of the Tag Along Notice. If Longyear fails to exercise its Tag Along Right during such 15-day period, such failure shall be deemed to be an election by Longyear
not to exercise its Tag Along Right. 
 8.5 Longyear Change of Control. 

(a) Longyear shall give Mascoma notice within two (2) days following the execution of an agreement that will result
in a change in control of Longyear (“Longyear Change in Control”). 
 (b) In the case of
a Longyear Change in Control, Mascoma may by written notice (an “Acquisition Notice”) delivered to Longyear and to the Company within 60 days after receipt of the notice contemplated in Section 8.5(a),
elect to acquire the Interest of Longyear pursuant to the provisions of this Section 8.5 and in such event Longyear shall be obligated to sell its Interest to Mascoma. The purchase price of the Interest shall be equal to the fair
market value of the Interest, determined in accordance with Section 8.6, below. Mascoma may at any time before the tenth business day following the date Mascoma is informed of the purchase price that has been established with
respect to the Interest in accordance with the terms hereof, rescind an Acquisition Notice by written notice to Longyear. If Mascoma rescinds an Acquisition Notice in accordance with the terms of this Agreement, then it will pay to Longyear the
out-of-pocket costs incurred by Longyear in connection with the establishment of such purchase price. 
 (c) The
closing of the purchase and sale pursuant to this Section 8.5 shall occur on a date and at a place designated by Mascoma not later than 60 days after the later of (i) final determination of the purchase price of the Interest,
or (ii) the date all filings, notices, approvals and consents with respect to the transaction have been made with and obtained from all governmental entities required under applicable Law and all applicable waiting periods have expired or been
terminated. Each Party and its Affiliates shall make all required filings and notices with and shall use commercially reasonable efforts to obtain all approvals and consents from all governmental entities required under applicable Law. At the
closing, the Parties shall deliver or cause to be delivered such instruments of Transfer and other agreements, documents and papers as are customary in transactions of the character contemplated in this Section 8.5 (and containing
customary representations and warranties as to title, authority and otherwise and other agreements). Mascoma may assign its right to acquire the Interest of Longyear under this Section 8.5 without the consent of Longyear, provided
that Mascoma must guaranty payment of the purchase price if the right is exercised by the transferee of such right. 

  
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8.6 Purchase Price. 
 (a) The purchase price of an Interest for purposes of Section 8.5 will be the “Fair Market Value” of the Interest as of the date on which the Acquisition Notice was delivered
(the “Valuation Date”). For this purpose the “Fair Market Value” of an Interest means the amount that would be distributed with respect to such Interest upon a dissolution and liquidation of the
Company pursuant to Article 14 after a sale of all of the assets of the Company to a single buyer, at a price equal to the price that would be paid by a willing buyer to a willing seller, with each having knowledge of all relevant
facts, as of the last day of the most recent month ending on or prior to the Valuation Date. 
 (b) The Fair
Market Value of the Interest involved will be as agreed by the purchasing Member and the selling Member, if such agreement can be reached. 
 (c) If no agreement is reached pursuant to Section 8.6(b) by the date that is forty-five days after the applicable Valuation Date, upon the written request of either Member delivered to
the other Member, the Fair Market Value of the Interest will be determined based on the criteria set forth above and using the following process: 
 (i) The purchasing Member and the selling Member will attempt to mutually agree upon a single appraiser who, if so selected, will establish the Fair Market Value of the Interest. In such case the
purchasing Member and the selling Member will share the cost of such appraiser equally. 
 (ii) If a single
appraiser is not mutually selected pursuant to paragraph (i) within 30 days after written demand from one Member to the other Member, then, upon written demand of a Member, the purchasing Member and the selling Member each will have 15 days to
select one appraiser. The purchasing Member and the selling Member each must pay the costs of its respective appraiser. If only one appraiser is selected during this 15-day period, such appraiser, at the cost of the Member who selected such
appraiser, will establish the Fair Market Value of the Interest. 
 (iii) If two appraisers are selected within
the 15-day period provided for in paragraph (ii), such appraisers are to attempt to agree on the Fair Market Value of the Interest. If such appraisers do not agree upon the Fair Market Value of the Interest within 30 days after the appointment of
the second of them, within 45 days after the appointment of the second appraiser each must separately determine the Fair Market Value of the Interest. If the higher of the two values is no more than 115% of the lower of the two values, the Fair
Market Value of the Interest will be the average of the two values. 
 (iv) If the higher of the two values is
more than 115% of the lower of the two values, the two appraisers must jointly appoint a third appraiser within 15 days after the 45 day period provided for in Section 8.6(c)(iii), above, the cost of which is to be shared equally
by the purchasing Member and the selling Member. If the two appraisers do not agree upon a third appraiser within this time period, the Circuit Court for Oakland County, Michigan will appoint a third appraiser on petition of either Member. Within 15
days of appointment, the third appraiser must then separately determine the Fair Market Value of the Interest. If the Fair Market Value of the Interest as determined by the third appraiser is the same as the Fair Market Value of the Interest as
determined by either of the other two appraisers, such value will be the Fair Market Value of the Interest. In other cases the Fair Market Value of the Interest will be determined as follows: The middle value of the three values will be determined.
If the two other values differ 

  
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from the middle value by an equal amount, the Fair Market Value of the Interest will be the middle value. If the difference between each of the other two values and the middle value is not
identical, then the value with the greatest difference from the middle value will be disregarded and the Fair Market Value of the Interest will be the average of the two remaining values. The Fair Market Value of the Interest, as so determined, will
be binding upon all parties. 
 (v) Unless otherwise agreed, in order to be eligible to be an appraiser under
this Section, an individual or entity must be a competent appraiser of businesses that are similar to that of the Company. 
 (vi) Only appraisals completed in writing and delivered to both Members within the specified time periods will be considered valid for purpose of this Agreement. The Company will allow its books, records,
and operations to be available for review by all chosen appraisers for the purposes of determining the Fair Market Value of the Interest so long as such appraisers agree to be bound by customary confidentiality and non-use agreements. 

SECTION 9. CAPITAL ACCOUNTS; ALLOCATION OF LOSSES 
 9.1 Capital Accounts. A Capital Account shall be maintained on the books of the Company for each Member in compliance with Code Sections 1.704-1(b)(2)(iv) and 1.704-2, as amended. Subject to
the preceding sentence, each Member’s Capital Account shall initially be credited with the amount of such Member’s Initial Capital Contribution to the capital of the Company as set forth in Section 2.1. The Initial
Capital Account Balances of the Members and their respective Percentage Interests are set forth in Exhibit A hereto. Thereafter, each Member’s Capital Account shall be increased by: 

(a) the amount of any additional capital contributed by such Member pursuant to Section 2.5; and

 (b) the amount of Profits (as hereinafter defined) allocated to such Member; and shall be decreased by:

 (i) the amount of distributions to such Member; and 

(ii) the amount of Losses allocated to such Member. 

9.2 [RESERVED] 
 9.3 Allocations. Subject to Section 9.4(b) and Section 14.5(b), The Profits and Losses of the Company shall be allocated to the Members in proportion to
their Percentage Interests. The following provisions shall apply with respect to the allocation of Profits and Losses: 
 (a) “Profits” and “Losses” mean, for each taxable year or other period, an amount equal to the Company’s Federal taxable income or loss (as is
appropriate) for such year or other period, determined in accordance with Code Section 703(a) (including all items of income, gain, loss or deduction required to be stated separately under Section 703(a)(l) of the Code), with the following
adjustments: 

  
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(i) Any income of the Company that is exempt from Federal income tax and not otherwise taken into account in computing
Profits or Losses will be added to taxable income or loss; 
 (ii) Any expenditures of the Company described in
Code Section 705(a)(2)(B) or treated as Code Section 705(a)(2)(B) expenditures under Treasury Regulations Section 1.704-1(b)(2)(iv)(i), and not otherwise taken into account in computing Profits or Losses, will be subtracted from taxable
income or loss; 
 (iii) Gain or loss resulting from any disposition of Company property (with respect to which
gain or loss is recognized for Federal income tax purposes) will be computed by reference to the Gross Asset Value of the property, notwithstanding that the adjusted tax basis of the property differs from its Gross Asset Value; 

(iv) Any items which are specially allocated pursuant to Section 9.4, or which are allocated solely for Federal
income tax purposes pursuant to Section 9.5 hereof, shall be excluded from the determination of Profits and Losses; 
 (v) In lieu of depreciation, amortization, and other cost recovery deductions taken into account in computing taxable income or loss, there will be taken into account Depreciation for the taxable year or
other period (where the term “Depreciation” shall mean for each taxable year, an amount equal to the depreciation, amortization, or other cost recovery deduction allowable with respect to an asset for such taxable year,
except that if the Gross Asset Value of an asset differs from its adjusted basis for federal income tax purposes at the beginning of such taxable year, Depreciation shall be an amount that bears the same ratio to such beginning Gross Asset Value as
the federal income tax depreciation, amortization, or other cost recovery deduction for such taxable year bears to such beginning adjusted tax basis; provided, if the adjusted basis for federal income tax purposes of an asset at the beginning of
such taxable year is zero, Depreciation shall be determined with reference to such beginning Gross Asset Value using any reasonable method selected by the Board; provided, if the remedial allocation method is used, Depreciation shall be determined
pursuant to Treasury Regulation Section 1.704-3(d)(2).”); and 
 (vi) If the Gross Asset Value of any
Company asset is adjusted pursuant to clauses (ii) or (iii) of the definition of “Gross Asset Value,” the amount of such adjustment shall be taken into account as gain or loss from the disposition of such asset for purposes of
computing Profits or Losses. 
 (b) “Gross Asset Value” means, with respect to any asset,
the adjusted basis of such asset for Federal income tax purposes, except as follows: 
 (i) The initial Gross
Asset Value of any asset contributed by a Member to the Company will be the fair market value of the asset on the date of the contribution, as determined by the Board. 

(ii) The Directors shall adjust the Gross Asset Values of all Company assets to equal the respective fair market values of
the assets, as reasonably determined by the Board, as of (a) the acquisition of an additional interest in the Company by any new or existing Member in exchange for more than a de minimis Capital Contribution or in connection with
services; (b) the distribution by the Company to a Member of more than a de minimis amount of Company property as consideration for an interest in the Company if the Board reasonably determine an adjustment is necessary or appropriate to
reflect the relative economic interests of the 

  
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Members in the Company and (c) the liquidation of the Company within the meaning of Treasury Regulations Section 1.704-1(b)(2)(ii)(g). 

(iii) The Gross Asset Values of Company assets will be increased or decreased to reflect any adjustment to the adjusted
basis of the assets under Code Sections 734(b) or 743(b), but only to the extent that the adjustment is taken into account in determining Capital Accounts under Treasury Regulations Section 1.704-1(b)(2)(iv)(m). 

(iv) The Gross Asset Value of any Company asset distributed to any Member will be the gross fair market value of the asset
on the date of distribution. 
 (v) After the Gross Asset Value of any asset has been determined or adjusted
under subparagraphs (i), (ii), or (iii) above, the Gross Asset Value will be adjusted by the depreciation taken into account with respect to the asset for purposes of computing Profits or Losses. 

9.4 Regulatory Allocations. 
 (a) The Members intend that the allocations pursuant to this Section 9.4 shall be equivalent to allocations that are or are deemed to be in accordance with the “partners interests in the
partnership” within the meaning of Regulations §§ 1.704-1(b) and 1.704-2, and the Board shall make such changes in the allocations pursuant to this Section 9.4 as it believes are reasonably necessary to meet the requirements of
such Regulations, including, without limitation the provisions related to qualified income offsets, the allocations of partner non recourse debt and to the minimum gain chargebacks. 

(b) Notwithstanding any provision of Section 9.3, no allocation of Loss shall be made to a Member if it would cause
such Member to have a negative balance in its “Adjusted Capital Account” (as such term is defined in clause (c) below), decreased by reasonably expected adjustments, allocations and distributions described in Regulation §§
1.704 1(b)(2)(ii)(d)(4), (5) and (6), immediately following such allocation. Allocations of Losses that would be made to a Member but for this Section 9.4(b) shall instead be made to other Members pursuant to Section 9.3 to the extent
not inconsistent with this Section 9.4(b). To the extent allocations of Losses cannot be made to any of the Members because of this Section 9.4(b), such allocations shall be made to the Members in accordance with Section 9.3, as
applicable, notwithstanding this Section 9.4(b). Allocations of Profits following any allocations of Losses subject to this Section 9.4(b) shall be allocated among the Members in a manner so as to offset the allocations of Losses
previously made to the Members pursuant to this Section 9.4(b). 
 (c) A Member’s “Adjusted
Capital Account” at any time shall mean such Member’s Capital Account at such time increased by the sum of (a) the amount of such Member’s share of partnership minimum gain (as defined in Regulation §1.704-2(g)(l)
and (3)) and (b) the amount of such Member’s share of partner nonrecourse debt minimum gain (as defined in Regulation §1.704-2(i)(5)), and decreased by reasonably expected adjustments, allocations and distributions described in
Regulation §§ 1.704 1(b)(2)(ii)(d)(4), (5) and (6). 
 (d) Except to the extent otherwise required
by the Code and Treasury Regulations, if one or more Percentage Interests in the Company is transferred in any taxable year, the items of income, gain, loss, deduction and credit allocable to such Percentage Interests for such taxable year shall be
apportioned between the transferor and the transferee in proportion to the number of days in such taxable year such Percentage Interests are held by each of the them, 

  
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except, that if they agree between themselves and so notify the Company within 30 days after the transfer, then at their option and expense, (i) all items or (ii) extraordinary items,
may be allocated to the person that held such Percentage Interests on the date such items were realized or incurred by the Company. 
 9.5 Allocations of Taxable Income. The income, gains, losses, deduction and credits of the Company for any taxable year shall be allocated to the Members in the same manner as Profits and
Losses were allocated to the Members for such fiscal year pursuant to Sections 9.3 and 9.4; provided, however, that solely for Federal, state and local income and franchise tax purposes and not for book or Capital Account purposes, income, gain,
loss and deduction with respect to any Company asset properly carried on the Company’s books at a value other than the tax basis of such Company asset shall be allocated in a manner determined in the discretion of the Board, so as to take into
account (consistently with Code Section 704(c) principles) the difference between such Company asset’s book basis and its tax basis. 
 9.6 Withholding. The Company shall comply with withholding requirements under Federal, state and local law and shall remit amounts withheld to and file required forms with the applicable
jurisdictions. To the extent the Company is required to withhold and pay over any amounts to any authority with respect to distributions or allocations to any Member, the amount withheld shall be deemed to be, at the option of the Board, either a
distribution to or a demand loan by the Company to such Member in the amount of the withholding. In the event of any claimed over-withholding, Members shall be limited to an action against the applicable jurisdiction. If the amount was deemed to be
a demand loan, the Company may, at its option, (a) at any time require the Member to repay such loan in cash or (b) at any time reduce any subsequent distributions by the amount of such loan. Each Member agrees to furnish the Company with
any representations and forms as shall reasonably be requested by the Company to assist it in determining the extent of, and in fulfilling, its withholding obligations. 
 SECTION 10. DISTRIBUTIONS 
 10.1 Distributions Generally.

 (a) Subject to 14.5, and provided that all previously accrued Tax Distributions have been made to the
Members, distributions to Members (in their capacity as such) may be made in such amounts and forms and at such times as this Agreement provides or as otherwise determined by the Board. Any such distributions are to be made (i) first in such
proportions as will cause the positive Capital Accounts of the Members to most quickly be in the same proportions as the Percentage Interests of the Members and (ii) thereafter among the Members in the same ratio as their Percentage Interests.

 (b) The amount of any distribution shall be charged against the Capital Account of the Member to whom such
cash or property is distributed. In the event of any distribution by the Company to a Member of property (other than cash), the property so distributed shall be valued by the Valuation Expert, and treated for accounting purposes as sold by the
Company and as though cash proceeds of such sale were distributed. The difference between the value of the property so distributed and the amount at which such property was carried on the books of the Company shall be treated as Profit or Loss on
the sale of such property and shall be credited or charged, as the case may be, in accordance with Section 9.3. 

  
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(c) For the avoidance of doubt, this Section 10.1 applies only to distributions made to Members in
their capacity as Members, and not to payments owed to any Member, its Affiliates or employees, for services, compensation or similar arrangements. 
 10.2 Distributable Cash. The term “Distributable Cash” as used herein with respect to any period shall mean all revenues received by the Company (other than cash
received as capital contributions, the proceeds of any loans or other financing obtained by the Company, interest earned on temporary investment of Company funds pending utilization thereof and proceeds from the sale of assets in partial or complete
liquidation of the Company in such period), less (i) all expenses of the Company fairly attributable to such revenues and (ii) such reserves as a majority of the Board may determine are necessary or appropriate to the continued operation
of the Company’s business (including reserves established for working capital purposes); provided that the Board may, in its sole discretion, at any time and from time to time, declare other funds of the Company to be Distributable Cash.

 10.3 Tax Distributions. To the extent the Company has Distributable Cash that may lawfully be distributed by
the Company under the LLC Act and subject to any applicable agreement to which the Company or any of its subsidiaries is a party governing the terms of indebtedness for borrowed money and subject to the retention and establishment of reserves, or
payment to third parties, of such funds as the Board deems necessary with respect to the reasonable business needs and obligations of the Company, the Board will cause the Company to make, on an annual basis or more frequently, a distribution to
each Member equal to such Member’s Tax Distribution for each Fiscal Year. The “Tax Distribution” for a Member for a Fiscal Year is such Member’s Percentage Interests of the aggregate amount determined by the Board
to be sufficient to at least equal the amount of the Members’ aggregate federal and state income taxes with respect to the Company’s net taxable income and gain for such fiscal period, determined by assuming (without regard to any
Members’ actual tax liability) that such income or gain, as applicable, is taxable at a combined effective federal and state income tax rate reflecting the deductibility of state income taxes for federal income tax purposes and by using for all
Members the highest marginal federal and state income tax rate then in effect for any Member for the type of income taking into account available deductions and allowances with respect to the income and taking into account all previous allocations
of Profits and Losses pursuant to Section 9.2, such that such Member shall receive an amount anticipated to be equal to the taxes for which such Member is liable with respect to the cumulative amount of net Profits which have been
allocated to him, her or it, less all prior Tax Distributions made under this Section 10.3. For purposes of applying this Section 10.3, the Board may treat a distribution made by the sixtieth day following the
end of a Fiscal Year as occurring during such Fiscal Year (and not the Fiscal Year in which it was in fact made). 
 SECTION 11.
CONFIDENTIALITY 
 11.1 Confidential Information. 

(a) For the purposes of this Agreement, “Confidential Information” shall mean any information or
material, written or oral, disclosed by any Member or the Company (the “Disclosing Party”), or its respective directors, officers, managers, employees, agents or advisors (including, without limitation, attorneys,
accountants, consultants and financial advisors) (collectively, its “Representatives”) to the other Member or the Company (the “Receiving Party”), or its Representatives, in writing, verbally, or by
observations, and whether or not specifically designated as confidential information by the Disclosing Party, disclosed on or after the date hereof, including, without limitation, any financial information, statements and records,

  
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costs and expense data, processes, procedures, methodologies, formulas, sources, methods, drawings, specifications, models, documentation, marketing and development plans, data, diagrams,
manuals, techniques, know how, business strategies, or any compilations or information. 
 (b) Confidential
Information does not include information that 
 (i) is or becomes available to the Receiving Party on a
nonconfidential basis from a source other than the Disclosing Party or its Representatives; provided that such source is not known by the Receiving Party to be bound by a confidentiality agreement with, or other contractual, legal or
fiduciary obligation to, the Disclosing Party that prohibits such disclsoure; 
 (ii) is or becomes generally
available to the public other than as a result of a disclosure by the Receiving Party or its Representatives in violation of this Section 11; or 

(iii) has been or is independently developed by the Receiving Party or its Representatives without the use of the
Confidential Information or in violation of the terms of this Section 11. 
 11.2 Confidentiality
Obligation. 
 (a) Each Member and the Company agree to carefully restrict access to the Confidential
Information to its Representatives. All such Representatives shall (i) be informed by the Receiving Party of the confidential nature of the Confidential Information, (ii) agree to keep the Confidential Information strictly confidential and
(iii) be advised of the terms of this Section 11 and agree to be bound to their employer-Member or employer-Company by terms of this Section 11. Each Member agrees to be responsible for any breaches of any
of the provisions of this Section 11 by any of its Representatives (it being understood that such responsibility shall be in lieu of any right or remedy the Disclosing Party may have against any Representative with respect to such
breach). 
 (b) The Members hereby agree that the Confidential Information will be disclosed solely in connection
with the purpose of the Company, as provided in Section 1.3. The Receiving Party shall hold and maintain the Confidential Information in confidence, with the same degree of care as it treats its own, comparable confidential
information, and shall not disclose to any person, which shall include, without limitation, any corporation, organization, group, partnership, entity or individual, any Confidential Information, without the written consent of the Disclosing Party.
The Members and Company agree that all Confidential Information shall remain the property of the Disclosing Party. 
 (c) No Member or Company shall, without the prior written consent of the Disclosing Party, duplicate, copy, publish, use or otherwise disclose to others or, to the extent practicable, permit the use by
others of any of the Confidential Information received by it. 
 (d) Notwithstanding the foregoing, in the event
any Member or Company, or any Representatives receive a request or are required (by deposition, interrogatory, request for documents, subpoena, civil investigative demand or similar process) to disclose all or any part of the Confidential
Information, such Member or Company, as the case may be, agree to (i) immediately notify the Disclosing Party of the existence, terms and circumstances surrounding 

  
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such request, (ii) consult with the Disclosing Party on the advisability of taking legally available steps to resist or narrow such request and (iii) assist the Disclosing Party, at the
Disclosing Party’s expense, in seeking a protective order or other appropriate remedy. In the event that such protective order or other remedy is not obtained or that the Disclosing Party waives compliance with the provisions hereof,
(A) the Receiving Party or its Representatives, as the case may be, may disclose to any tribunal only that portion of the Confidential Information which the Receiving Party or its Representatives are advised by counsel is legally required to be
disclosed, and the Receiving Party or its Representatives shall exercise reasonable best efforts to obtain assurance that confidential treatment will be accorded such Confidential Information, and (B) the Receiving Party or its Representatives
shall not be liable for such disclosure, unless disclosure to any such tribunal was caused by or resulted from a previous disclosure by the Receiving Party or its Representatives not permitted by this Section 11. 

11.3 Equitable Relief. The Receiving Party acknowledges and agrees that due to the unique nature of the Disclosing
Party’s Confidential Information, there can be no adequate remedy at law for any breach of its obligations hereunder, that any such breach may allow the Receiving Party or third parties to unfairly compete with the Disclosing Party resulting in
irreparable harm to the Disclosing Party, and therefore, that upon any such breach or any threat thereof, the Disclosing Party shall be entitled to appropriate equitable relief without the posting of a bond in addition to whatever remedies it might
have at law. The Receiving Party will notify the Disclosing Party in writing immediately upon the occurrence of any such unauthorized release or other breach of which it is aware. 

11.4 Public Relations. During the term of the Company, neither the Company nor any Member shall, or shall permit any of its
respective Affiliates to, issue or cause the publication of any press release or other public announcement with respect to, or otherwise make any public statement concerning, the Company, the Project or matters pertaining thereto (each a
“Public Announcement”) without the approval of Mascoma, such approval not to be unreasonably withheld or conditioned. 

SECTION 12. LIABILITY, EXCULPATION AND INDEMNIFICATION 
 12.1 Liability of Members. Except as otherwise prohibited by law, no Member shall have any personal liability whatever in its capacity as a Member, whether to the Company, to any of the
Members or to the creditors of the Company, for the debts, liabilities, contracts or any other obligations of the Company or for any Losses (as defined herein) of the Company in excess of (a) the amount of its Capital Contributions to the
Company; (b) its share of any assets and undistributed profits of the Company; (c) its obligations to make other payments expressly provided for in this Agreement; and (d) the amount of any distributions wrongfully distributed to it.

 12.2 Exculpation. Neither the Members nor any Director or Officer shall be liable to the Company, any other
Member, Director or Officer or any other person or entity who has an interest in the Company for any loss, damage or claim incurred by reason of any act or omission performed or omitted by such Member, Director or Officer in good faith on behalf of
the Company and in a manner reasonably believed to be within the scope of the authority conferred on such Member, Director or Officer by this Agreement and with the reasonable belief that any act or omission was in the “best interests” of
the Company or designed to promote and advance the interests of the Company, except that such Member, Director or Officer shall be liable for any such loss, damage or claim incurred by reason of such Member, Director or Officer’s gross
negligence or willful misconduct. 

  
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12.3 Indemnification of Member, Directors and Officers. 

(a) To the greatest extent not inconsistent with applicable law, the Company shall indemnify the Members, any Director and
any Officer of the Company made a party to any proceeding because such individual is or was the Member, a Director or an Officer of the Company as a matter of right, against all liability incurred by such person in connection with any proceeding;
provided, that it shall be determined in the specific case in accordance with Section 12.3(d) that indemnification of such person is permissible in the circumstances because the person has met the standard of conduct for
indemnification set forth in Section 12.3(c). The Company shall pay for or reimburse the reasonable expenses incurred by the Member, Director or Officer in connection with any such proceeding in advance of final disposition
thereof if (i) the person furnishes the Company a written affirmation of the person’s good faith belief that it has met the standard of conduct for indemnification described in Section 12.3(c), (ii) the person
furnishes the Company a written undertaking, executed personally or on such person’s behalf, to repay the advance if it is ultimately determined that such person did not meet such standard of conduct, and (iii) a determination is made in
accordance with Section 12.3(d) that based upon facts then known to those making the determination, indemnification would not be precluded under this Section 12.3. The undertaking described in
Section 12.3(a)(ii) must be a general obligation of the person, subject to such reasonable limitations as the Company may permit, but need not be secured and may be accepted without reference to financial ability to make
repayment. The Company shall indemnify the Member, Director or Officer who is wholly successful, on the merits or otherwise, in the defense of any such proceeding, as a matter of right, against reasonable expenses incurred by such person in
connection with the proceeding without the requirement of a determination as set forth in Section 12.3(c). Upon demand by the Member, Director or Officer for indemnification or advancement of expenses, as the case may be, the
Company shall expeditiously determine whether the Member, Director or Officer is entitled thereto in accordance with this Section 12.3. The indemnification and advancement of expenses provided for under this
Section 12.3 shall be applicable only to any proceeding arising from acts or omissions occurring after the adoption of this Section 12.3. 

(b) The Company shall have the power, but not the obligation, to indemnify any individual who is or was an employee or
agent of the Company to the same extent as if such individual was the Member, a Director or an Officer. 
 (c)
Indemnification of a Member, Director or Officer is permissible under this Section 12 only if (i) such person conducted himself or itself in good faith; (ii) such person reasonably believed that his or its conduct was
in, or at least not opposed to, the Company’s best interest and was within the authority delegated to him or it by this Agreement, the resolutions of the Board or by the Member and (iii) in the case of any criminal proceeding, he or it had
no reasonable cause to believe his or its conduct was unlawful. The foregoing notwithstanding, a final determination with respect to such Member, Director or Officer, as the case may be, in any proceeding by judgment, order, settlement, conviction
or upon a plea of nolo contendere or its equivalent is not, of itself, determinative of whether or not that person met the standard of conduct described in Section 12.3(c)(i), (ii) and (iii). 

(d) A determination as to whether indemnification or advancement of expenses is permissible shall be made by the Board by
the affirmative vote of all Directors not at the time parties to the proceeding, or, if all Directors are parties to the proceeding, by the Members. 

  
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(e) A Member, Director or Officer who is a party to a proceeding may apply for indemnification from the Company to the
court, if any, conducting the proceeding or to another court of competent jurisdiction. On receipt of an application, the court, after giving notice the court considers necessary, may order indemnification if it determines: 

(i) in a proceeding in which a Member, Director or Officer is wholly successful, on the merits or otherwise, Member,
Director or Officer is entitled to indemnification under this Section 12, in which case the court shall order the Company to pay the Member, Director or Officer his or its reasonable expenses incurred to obtain such court ordered
indemnification; or 
 (ii) a Member, Director or Officer is fairly and reasonably entitled to indemnification in
view of all the relevant circumstances, whether or not the Member, Director or Officer met the standard of conduct set forth in Section 12.3(c). 
 (f) Nothing contained in this Section 12.3 shall limit or preclude the exercise or be deemed exclusive of any right under the law, by contract or otherwise, relating to indemnification
of or advancement of expenses to any individual who is or was a Member, Director or Officer of the Company or is or was serving at the Company’s request as a director, officer, partner, manager, trustee, employee, or agent of another foreign or
domestic company, association, limited liability company corporation, joint venture, trust, employee benefit plan, or other enterprise, whether for-profit or not. Nothing contained in this Section 12.3 shall limit the ability of
the Company to otherwise indemnify or advance expenses to any person. It is the intent of this Section 12.3 to provide indemnification to the Members, the Directors and the Officers to the fullest extent now or hereafter permitted
by the law consistent with the terms or conditions of this Section 12.3. Indemnification shall be provided in accordance with this Section 12.3 irrespective of the nature of the legal or equitable theory upon
which a claim is made, including, without limitation, negligence, breach of duty, mismanagement, waste, breach of contract, breach of warranty, strict liability, violation of federal or state securities law, or violation of any other state or
federal law or violation of any law of any other jurisdiction. 
 (g) For purposes of this Section
12.3: 
 (i) The term “expenses” includes all direct and indirect cost
(including, without limitation, counsel fees, retainers, court costs, transcripts, fees of experts, witness fees, travel expenses, duplicating costs, printing and binding costs, telephone charges, postage, delivery service fees and all other
disbursements or out-of-pocket expenses) actually incurred in connection with the investigation, defense, settlement or appeal of a proceeding or establishing or enforcing a right to indemnification under this Section 12.3,
applicable law or otherwise. 
 (ii) The term “liability” means the obligation to pay
a judgment, settlement, penalty, fine, excise tax (including an excise tax assessed with respect to an employee benefit plan), or reasonable expenses incurred with respect to a proceeding. 

(iii) The term “party” includes an individual who was, is or is threaten to be made, a named
defendant or respondent in a proceeding. 
 (iv) The term “proceeding” means any
threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative or investigative and whether formal or informal. 

  
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(h) The Company may purchase and maintain insurance for its benefit, the benefit of any individual who is entitled to or
may be granted indemnification under this Section 12.3, or both, against any liability asserted against or incurred by such individual in any capacity or arising out of such individual’s service with the Company, whether or
not the Company would have the power to indemnify such individual against such liability. 
 SECTION 13. BOOKS AND RECORDS; REPORTS; TAX
RETURNS; BANK ACCOUNTS 
 13.1 Books and Records. The Company shall keep such books of account and other
records with respect to its operations as will sufficiently explain the transactions and financial position of the Company and enable financial statements to be prepared in accordance with GAAP (as defined in Section 13.2), and
shall cause such books and other records to be kept in such manner as will enable them to be properly audited. In addition, the Company shall keep such other books and records with respect to its operations as a Member or a majority of the Board
shall from time to time request, and shall cause such books and records to be kept in such manner as the Member or a majority of the Board shall have directed. All books and other records referred to above shall be maintained at the principal place
of business of the Company, or at such other place as a Member or a majority of the Board shall specify, and the Members, their duly authorized representatives and each Director shall at all reasonable times have access to such books and other
records. Any review, audit or other investigation required or requested by a Member, other than usual and customary internal or other audits and reviews, shall be at the sole cost and expense of the Member conducting or undertaking the same. In
addition, the Members shall be entitled to review and discuss with the external auditors and their designees working papers and any other documentation with respect to the books and records of the Company. Notwithstanding the foregoing, records
maintained in connection with this Section 13 shall be subject to Section 11. 
 13.2
Accounting Basis and Fiscal Year. Such books (i) shall be maintained according to U.S. generally accepted accounting principles, consistently applied (“GAAP”), (ii) shall reflect all Company transactions,
(iii) shall be appropriate and adequate for the Company’s business and for carrying out all provisions of this Agreement, and (iv) shall be closed, balanced and audited or reviewed (as the Members or the Board may determine) as of the
end of each fiscal year, as soon as practicable after the end of such fiscal year. The fiscal year of the Company shall end on December 31. 
 13.3 Reports. 
 (a) The Board shall cause to be
delivered to each Member, within 30 days after the end of each fiscal year of the Company a draft balance sheet as of the end of such fiscal year and statements of income, Members’ equity, and changes in financial position for the year then
ended, together with a clearance letter from the Company’s independent certified public accountants stating that such certified public accountants have completed the Company’s annual audit and setting forth any adjustments expected to be
made to any of the Company’s draft financial statements for such fiscal year. The Board shall cause to be delivered to each Member within 60 days after the end of each fiscal year of the Company an annual report approved by a majority of the
Board containing the following: 
 (i) a balance sheet as of the end of such fiscal year and statements of
income, Members’ equity, and changes in financial position for the fiscal year then ended, each of which shall be audited by the Company’s independent certified public accountants, together

  
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with the audit opinion and report of the Company’s independent certified public accountants thereon; 
 (ii) a general description of the activities of the Company during such year; and 
 (iii) a report of any material transaction during such year between the Company and any other person (including any Member and Affiliate), stating fees and compensation paid by the Company and the
products supplied and services performed by such other person for such fees or compensation. 
 The expenses of the Company’s certified
public accountants incurred in connection with their annual audit of the Company’s financial statements shall be paid by the Company. 
 (b) Within 30 days after the end of each quarter of each fiscal year of the Company, the Board shall cause to be delivered to each Member a quarterly report, approved by a majority of the Board,
containing a balance sheet as of the end of such quarter and a statement of income for such quarter, each of which shall be unaudited but which shall be certified by the Chief Financial Officer of the Company (i) as fairly presenting the
financial position of the Company at the end of such quarter and the results of operations of the Company for such quarter (subject to normal year-end adjustments) and (ii) as having been prepared in accordance with GAAP consistent with that of
the Company’s audited or reviewed financial statements. The report shall also contain a description of any material event regarding the business of the Company during such quarter. 

(c) Within 120 days after the end of each fiscal year, the Board will cause to be delivered to each Member all information
necessary for the preparation of such Member’s U.S. Federal income tax returns, including a statement showing such Member’s share of income, gains, losses, deductions and credits for such year for U.S. Federal income tax purposes and the
amount of any distribution made to or for the account of such Member pursuant to this Agreement. 
 13.4 Tax
Returns. The Members agree that the Company shall be responsible for the preparation and timely filing of all federal, state and local tax and information returns that the Company is required to file. The Members agree that the Company will
either prepare the necessary tax and information returns internally, or enlist the services of a tax preparation and/or consultation firm, and the Company will provide a copy of each such tax or information return filed on its behalf to the Members
promptly following such filing. The Members agree that the Company will provide the Members with any additional information required for the completion of any tax filings required to be made by the Members under U.S. law. The Members agree that the
Company will cooperate in resolving any inquiries made by any government tax authority to the Members concerning the results or activities of the Company. 
 13.5 Bank Accounts. A majority of the Board shall cause one or more accounts of the Company to be maintained in one or more banks, each of which shall be a member of the Federal Deposit
Insurance Corporation, which accounts shall be used for the payment of the expenditures incurred by the Company in connection with its business, and in which shall be deposited any cash receipts of the Company. All amounts credited to any such
account at any time shall be and remain the property of the Company, and shall be received, held and disbursed by the Company for the purposes specified in this Agreement and in accordance with the instructions of a majority of the Board. There
shall not be deposited in any of such accounts any funds other than funds 

  
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belonging to the Company, and no other funds shall in any way be commingled with such Company funds. 
 SECTION 14. TERM; PUT AND REPURCHASE RIGHTS; DISSOLUTION AND WINDING UP 

14.1 Term. The term of the Company shall commence as of the Date of Commencement and shall continue until the winding up and
liquidation of the Company and its business is completed following an event of Dissolution (as defined below), in accordance with the provisions set forth in Section 14.4 hereof. The existence of the Company as a separate legal
entity shall continue until the cancellation of the Company’s Certificate of Formation, as filed with the Secretary of State of the State of Delaware, as the same may be amended from time to time. 

14.2 Longyear Put Right. At any time between the second and third anniversary of the Contributions Commencement Date (the
“Evaluation Period”), Longyear shall have the right to evaluate its participation in the Project and, subject to the terms hereof, may deliver to the Company a put notice (the “Put Notice”). Upon its
receipt of a Put Notice during the Evaluation Period, the Company shall set a closing date (which date shall not be more than three months after its receipt of the Put Notice) for the purchase of Longyear’s entire Interest in the Company at the
“Guaranteed Return Price” as such term is defined in Section 14.3 below. On the closing date set by the Company, the Company shall purchase and pay the Guaranteed Return Price for Longyear’s entire Interest in the
Company and Longyear shall sell to the Company Longyear’s entire Interest in the Company. The purchase by the Company pursuant to Section 14.2, or the purchase by Mascoma pursuant to Section 14.3, of
Longyear’s entire Interest in the Company shall be effected pursuant to an agreement and such other documents as are customary in transactions of this type; provided, however, that upon payment, on or after the date set therefor,
of the Guaranteed Return Price into a separate escrow account, of which Longyear is the beneficiary, the Company shall, for all intents and purposes, reflect the Company (if the repurchase is effected pursuant to
Section 14.2) or Mascoma (if the purchase is effected pursuant to Section 14.3) as the sole owner of Longyear’s entire Interest in the Company. 

14.3 Mascoma Repurchase Right. At any time during the Evaluation Period, Mascoma shall have the right to evaluate its
participation in the Project and, subject to the terms hereof, may deliver to Longyear a repurchase notice (“Repurchase Notice”) which specifies a closing date (which shall not be more than 60 days after delivery of the
Repurchase Notice) for the purchase of Longyear’s entire Interest in the Company. Upon delivery of a Repurchase Notice during the Evaluation Period At the closing date set forth in the Repurchase Notice, Mascoma shall purchase and pay the
Guaranteed Return Price for Longyear’s entire Interest in the Company and Longyear shall sell to Mascoma Longyear’s entire Interest in the Company at the “Guaranteed Return Price” as hereinafter defined. For the purposes of this
Agreement, the term “Guaranteed Return Price” shall equal the sum of: (i) the total amount that Longyear has contributed in cash, in kind and in services provided as reflected in Longyear’s Capital Account or an
accrued liability payable to Longyear, plus (ii) an additional amount calculated to provide that the sum of (i) and (ii) provides Longyear with a 12% annual rate of return with respect to such contributions and amounts identified in
(i) above, calculated as of the date of the Repurchase Notice through the date that such amount is actually paid to Longyear (or to an escrow account of which Longyear is the beneficiary). 

14.4 Dissolution. The Company shall dissolve, and its affairs shall be wound up (the “Dissolution”)
upon the first to occur of the following: (a) the written unanimous consent of the 

  
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Members; (b) the consent of the Board (provided such action is passed by a Required Vote or the Board has otherwise used commercially reasonable efforts to provide Longyear with 30 days
advanced written notice of its intention to dissolve the Company); (c) the bankruptcy or dissolution of any Member, the occurrence of any other event under the LLC Act that terminates the continued existence of a Member, unless within 90 days
after the occurrence of such an event, the remaining Member or Members agree(s) in writing to continue the business of the Company and to the appointment, if necessary or desired, effective as of the date of such event of one or more additional
Members; or (d) the entry of a decree of dissolution under and in accordance with applicable law. 
 14.5 Winding Up
and Distribution Upon Liquidation. 
 (a) Upon Dissolution, the Company shall continue solely for the
purposes of winding up its affairs in an orderly manner, liquidating its assets, and satisfying the claims of its creditors and Members; provided that all covenants contained in this Agreement and obligations provided for in this Agreement
shall continue to be fully binding upon the Members until such time as the property of the Company has been distributed as contemplated by this Agreement and the Certificate has been canceled pursuant to the LLC Act. All technology and proprietary
information in the possession of the Company upon Dissolution shall be distributed to Mascoma or an Affiliate thereof designated by Mascoma. The distribution or assignment of such technology and proprietary information in accordance with this
Section 14.3 shall not, for purposes of Section 10.1, be deemed to constitute a distribution to such Member of any asset of the Company. After such distribution or assignment and the payment of liabilities owing
to creditors of the Company (including Members who are creditors but only to the extent they are creditors), the Board, or the liquidator (if any) appointed by the Board (the “Liquidator”), shall set up such reserves as it
deems reasonably necessary for any contingent or unforeseen liabilities or obligations of the Company. Said reserves may be paid over by the Members, Board or the Liquidator to a bank, to be held in escrow for the purpose of paying any such
contingent or unforeseen liabilities or obligations and, at the expiration of such period as the Members, the Board, or the liquidator may deem advisable, as the case may be, such reserves shall be distributed to the Members or their assigns.

 (b) After paying such liabilities and providing for such reserves, and after making all allocations required
by Section 9.3, including all allocations relating to the liquidation of the Company, the Board or the Liquidator (if any) shall cause the remaining net assets of the Company (the “Remaining Net Assets”) to
be distributed to the Members in accordance with the following: 
 (i) First, and immediately prior to any
distribution of the Remaining Net Assets pursuant to this Section 14.5(b), Longyear’s Capital Account shall be increased (and Mascoma’s Capital Account shall be correspondingly decreased) by an amount equal to
Longyear’s initial Percentage Interest (25%) multiplied by the MI Contribution; 
 (ii) Second, the
Remaining Net Assets shall be distributed to the Members in accordance with their Percentage Interests to the extent of the MI Contribution; 
 (iii) Third, the Remaining Net Assets of the Company shall be distributed to the Members in such amounts as are necessary to cause the Members’ respective positive Capital Accounts (after taking into
account the increase in Longyear’s Capital Account and the corresponding reduction of Mascoma’s Capital Account pursuant to clause (i) of this Section 14.5(b)) to be in the same ratio as the then Percentage
Interests of the Members; and 

  
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(iv) Fourth, and finally, the Remaining Net Assets of the Company shall be distributed to the Members in the same ratio as
the then Percentage Interests of the Members. 
 If the foregoing distributions are not sufficient to return to any Member the
full amount of such Member’s Capital Contributions or Capital Account balances, such Member shall have no recourse against the other Members. 
 As used herein, “MI Contribution” means an amount equal to the lesser of $13,000,000 or such amount as shall have been received by Mascoma from the State of Michigan and
contributed to Mascoma’s Capital Account as a Capital Contribution. 
 (c) The assets of the Company may be
distributed pursuant to this Section 14.5 in cash or in kind, and the proportion of each Member’s share that is distributed in cash, as well as the nature of the assets distributed in kind, shall be in proportion to the
extent reasonably practicable to the amounts distributable to Members pursuant to subparagraph (b) above. In the event that any part of such net assets consists of notes or accounts receivable or other non-cash assets, the Board or the
Liquidator (if any) shall take whatever steps it deems appropriate to convert such assets into cash or into any other form that would facilitate the distribution thereof. If any assets of the Company are to be distributed in kind, such assets shall
be distributed on the basis of their fair market value at the time of such distribution, as determined by the Board in good faith. 
 14.6 Survival. In the event of Dissolution, the provisions of Section 11 shall survive the termination of this Agreement for a period of five years, and the Members and
their respective Affiliates shall be bound thereby. 
 14.7 Termination of Certain Rights. The special rights and
privileges of Longyear (in its capacity as such and not as a result solely of its status as a Member) set forth in Sections 2.6(a) and 5.3 (c), shall have no further force or effect as of the earlier to occur of
(i) the first anniversary of the commissioning of a commercial scale ethanol production facility, or (ii) the date, if any, that Longyear has transferred its Interest in accordance with the terms hereof. 

SECTION 15. DISPUTE RESOLUTION 
 15.1 Dispute Resolution. 
 (a) Prior to pursuing
mediation with respect to any dispute hereunder, the chief executive officers (or a direct report appointed by them) of each of the Members, or an Affiliate of each of them, shall meet to seek an amicable resolution to such dispute. No party shall
be entitled to make and bring a claim in arbitration unless it has attempted for a period of 45 days from written notice of a dispute to reach such amicable resolution. 

(b) Except as provided herein, no civil action with respect to any dispute, claim or controversy arising out of or
relating to this Agreement may be commenced until the matter has been submitted to Judicial Arbitration Mediation Services (“JAMS”) for mediation. Either Member may commence mediation by providing to JAMS and the other Member
a written request for mediation, setting forth the subject of the dispute and the relief requested. The Members will cooperate with JAMS and with one another in selecting a mediator from JAMS panel of neutrals, and in scheduling the mediation
proceedings. The Members covenant that they will participate in the mediation in good faith, and that they will share equally in its costs. All 

  
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offers, promises, conduct and statements, whether oral or written, made in the course of the mediation by any of the Members, their agents, employees, experts and attorneys, and by the mediator
and any JAMS employees, are confidential, privileged and inadmissible for any purpose, including impeachment, in any litigation or other proceeding involving the Members, provided that evidence that is otherwise admissible or discoverable shall not
be rendered inadmissible or non-discoverable as a result of its use in the mediation. Either Member may seek equitable relief prior to the mediation to preserve the status quo pending the completion of that process. Except for such an action to
obtain equitable relief, neither Member may commence a civil action with respect to the matters submitted to mediation until after the completion of the initial mediation session, or 45 days after the date of filing the written request for
mediation, whichever occurs first. Mediation may continue after the commencement of a civil action, if the Members so desire. The provisions of this clause may be enforced by any Court of competent jurisdiction, and the Member seeking enforcement
shall be entitled to an award of all costs, fees and expenses, including attorneys’ fees, to be paid by the Member against whom enforcement is ordered. 
 SECTION 16. MISCELLANEOUS 
 16.1 Government and Regulatory
Restrictions. The provisions hereof shall be subject to applicable restrictions provided for in any effective grant, permit, loan or approval issued to the Company, or any Member with respect to the purpose of the Company, now held or
obtained following the date hereof, by the Federal government, any state or local government or any administrative agency or board thereof. 
 16.2 Other Company Opportunities. If an opportunity comes to the attention of any Director, officer or employee of the Company who is also a director, officer or employee of the Member or an
Affiliate (other than the Company) of such Member (the “Agent”), such opportunity shall belong to the Company if such opportunity is expressly offered to the Agent solely in his or her capacity as a director, officer or
employee of the Company. 
 16.3 Expenses. Each Member shall bear its own expenses, including the fees of any
attorneys, accountants, investment bankers or other engaged by such Member, incurred in connection with this Agreement and the transactions contemplated hereby except as otherwise expressly provided herein. 

16.4 Notices. All notices, requests and other communications to any party hereunder shall be in writing and shall be given,
as to each party, at the address set forth on Exhibit A or such other address as shall be designated by such party in accordance with the procedures of this Section. All notices shall be deemed to have been given (i) when
personally delivered, (ii) three business days following deposit in the U.S. mail, certified or registered, return receipt requested, postage prepaid or (iii) one business day following dispatch by a nationally recognized overnight courier
service. 
 16.5 Amendments; No Waivers. 

(a) Subject to Section 2.5, any provision of this Agreement may be amended or waived if such amendment
or waiver is in writing and signed, in the case of an amendment, by Members holding at least 90% of the Percentage Interests held by all Members, or in the case of a waiver, by the Member against whom the waiver is to be effective. 

  
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(b) No failure or delay by any Member in exercising any right, power or privilege hereunder shall operate as a waiver
thereof nor shall any single or partial exercise thereof preclude any other or further exercise thereof or the exercise of any other right, power or privilege. The rights and remedies herein provided shall be cumulative and not exclusive of any
rights or remedies provided by law. 
 16.6 Successors and Assigns. The provisions of this Agreement shall be
binding upon and inure to the benefit of the Members and their respective successors and assigns. No Member may Transfer any of its rights or obligations under this Agreement without the prior written consent of the other Member. 

16.7 Governing Law. This Agreement shall be construed in accordance with and governed by the law of the State of Delaware,
without regard to the conflicts of law rules of such state. The parties agree that any action, suit, claim or proceeding arising out of or relating to this Agreement or the transactions contemplated hereby shall be brought by the parties in a
Delaware state court or a federal court sitting in the State of Delaware, which shall be the exclusive venue of any such action, suit, claim or proceeding. Each party waives any objection which such party may now or hereafter have to the laying of
venue of any such action, suit, claim or proceeding, and irrevocably consents and submits to the jurisdiction of any such court (and the appropriate appellate courts) in any such action, suit, claim or proceeding. Any and all service of process and
any other notice in any such action, suit, claim or proceeding shall be effective against such party when transmitted in accordance with Section 16.4 of this Agreement. Nothing contained herein shall be deemed to affect the right
of any party to serve process in any manner permitted by law. 
 16.8 Entire Agreement; No Third Party Rights.
This Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior agreements, understandings and negotiations, both written and oral, between the parties with respect to the
subject matter of this Agreement. No representation, inducement, promise, understanding, condition or warranty not set forth herein has been made or relied upon by any party hereto. Neither this Agreement nor any provision hereof is intended to
confer upon any Person other than the parties to this Agreement any rights or remedies hereunder, as a third party beneficiary or otherwise. 
 16.9 Further Assurances. In connection with this Agreement, as well as all transactions contemplated by this Agreement, each party agrees to execute and deliver such additional documents and
instruments, including amendments to this Agreement, and to perform such additional acts as may be necessary, appropriate or reasonably requested to carry out or evidence the provisions of this Agreement and the transactions contemplated hereby.

 16.10 Severability. If any provisions of this Agreement or the application thereof to any Person or
circumstance shall be held invalid or unenforceable, the other provisions of this Agreement or the application of such provision to other Persons or circumstances shall not be affected thereby but shall continue in force to the fullest extent
permitted by law. 
 16.11 Counterparts; Effectiveness. This Agreement may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument. This Agreement shall become effective when each party hereto shall have received a counterpart hereof
signed by the other party hereto. 
 16.12 Captions. The captions herein are included for convenience of reference
only and shall be ignored in the construction or interpretation hereof. 

  
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PURSUANT TO AN APPLICATION FOR CONFIDENTIAL TREATMENT UNDER RULE 406 OF THE SECURITIES ACT; [***] DENOTES OMISSIONS. 
  

16.13 Definition of Affiliate. For the purposes of this Agreement, the term “Affiliate” means a
corporation or other entity, which directly or indirectly controls, is controlled by or is under common control with any party or its shareholders. The term “control” means the ownership of more than 50% of the outstanding
shares or equivalent interest entitled to vote. 
 [SIGNATURES APPEAR ON THE NEXT PAGE] 

  
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IN WITNESS WHEREOF, the parties hereto have caused their duly authorized representatives to execute this agreement as of the day and year
first above written. 
  

					
	FRONTIER RENEWABLE RESOURCES, LLC
		
	By:	 	/s/ Stephen J. Hicks
		 	Name:	 	Stephen J. Hicks
		 	Title:	 	COO
	
	MASCOMA CORPORATION
		
	By:	 	/s/ Bruce Jamerson
		 	Name:	 	Bruce Jamerson
		 	Title:	 	CEO
	
	J.M. LONGYEAR, L.L.C.
		
	By:	 	/s/ Stephen J. Hicks
		 	Name:	 	Stephen J. Hicks
		 	Title:	 	COO

  
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SCHEDULE 2.4 
 Reimbursable Organizational Expenses 
 In addition to the expenses listed
below, the members have incurred other reimbursable organizational expenses. The amount and type of such other reimbursable organizational expenses shall be subsequently agreed upon by the Members. Once the Members reach an agreement on the amount
and type of such other reimbursable organizational expenses, the parties to this Agreement shall amend this Schedule 2.4 to reflect such agreement. 

  
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2.4 (Mascoma). Mascoma Reimbursable Organizational Expenses 

 

					
	 [***]
	  	$	[	***] 
	 [***] 
	  	$	[	***] 
	 [***] 
	  	$	[	***] 
	 [***] 
	  	$	[	***] 
	 Total:
	  	$	[	***] 

 2.4 (JML). JML Reimbursable Organizational Expenses 

 

					
	 [***] 
	  	$	[	***] 
	 [***] 
	  	$	[	***] 
	 [***]
	  	$	[	***] 
	 [***] 
	  	$	[	***] 
	 [***] 
	  	$	[	***] 
	 [***]
	  	$	[	***] 
	 [***]
	  	$	[	***] 
	 Total:
	  	$	[	***] 

  
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EXHIBIT A 

Initial Capital Account Balances and Percentage Interests 

 

											
	 Member
	  	 Initial Capital Contribution
	  	Initial Capital
Account
Balance	 	  	Initial
Percentage
Interest	 
	 Mascoma
	  	Subject to the availability to, and receipt by, Mascoma of (i) any funds received by Mascoma from the Michigan Economic Development Corporation (“MEDC”)
pursuant to MEDC’s commitment letter dated August 29, 2008, as the same may be amended, including any amendment that may be provided in connection with the award of DOE Grants (as defined below), if any, relating to the Project (said funds
being the “MEDC Grant Proceeds”), and (ii) a portion of any funds received by Mascoma from the Department of Energy (the “DOE”) under the DOE grant applied for by Mascoma entitled “Demonstration
of Integrated Biorefinery Application MAS10BIO5” (the “DOE Grant Proceeds”), an amount in cash not to exceed $16,000,000 (such initial capital contribution referred to herein individually and in the aggregate as the
“Mascoma Initial Contribution”). Such cash shall be contributed by Mascoma as it is made available and received by Mascoma pursuant to the applicable documents governing the disbursement thereof.	  	 	1/	  	  	 	75	% 
				
	 Longyear
	  	Unencumbered title to certain real property consisting of approximately 350 acres located in Kinross, MI (the “Preferred Site”). If at any time the Board,
in its reasonable discretion, determines that the Preferred Site is not suitable for the development and operation of a commercial scale cellulosic fuel production facility or a lumber milling facility or a biomass power facility, then the Company
shall notify Longyear of its determination (the “Nonsuitability Notice”) and shall use reasonable efforts to acquire an Alternative Site (as defined below) by exchanging the Preferred Site for such Alternative Site; provided,
however, in no event shall the Company be obligated to pay any amounts to the owners of the Alternative Site (other than the exchange of the Preferred Site). If within 45 days of its delivery of the Nonsuitability Notice the Company is unable to
reach an agreement with a third party for the purchase of unencumbered title to an Alternative Site using part or all of the Preferred Site as payment therefor, Longyear, at its cost and expense, shall promptly and without delay acquire unencumbered
title to an Alternative Site and shall transfer unencumbered title and ownership of the Alternative Site to the Company, Longyear may elect to exchange the Company’s interest to the Preferred Site at its sole discretion. If at the time of such
exchange, the then fair market value of the Alternative Site is less than the fair market value of the Preferred Site on the date that the Preferred Site was contributed to the capital of the Company by Longyear, then, concurrently with such
exchange, Longyear’s Capital Account shall be reduced in an amount equal to the positive difference, if any, between such fair market value of the Preferred Site and such fair market value of the Alternative Site. As used herein,
“Alternative Site” means real property consisting of not less than 350 acres located in the State of Michigan that Longyear proposes and the Board, in its reasonable discretion, agrees is suitable for the development and
operation of a commercial scale cellulosic fuel production facility, a lumber milling facility, and a biomass power facility. The Preferred Site and the Alternative Site are each a “Site.”	  	 	2/	  	  	 	25	% 

  

	1/	As of any date of determination, an amount equal to the lesser of (i) $36,000,000 and (ii) the aggregate of cash actually received by Mascoma from MEDC Grant
Proceeds and DOE Grant Proceeds and contributed by Mascoma to the capital of the Company. 

	2/	As of any date of determination, an amount equal to the appraised value of the Site.

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