Document:

EX-10.1

 Exhibit 10.1 

December 27, 2017 
 VIA HAND DELIVERY 

Mahesh Sundaram 
  

	Re:	Terms of Separation 

  

	Dear	Mahesh: 

 This letter confirms the agreement
(“Agreement”) between you and Immersion (the “Company”) concerning the terms of your separation and offers you the separation compensation we
discussed in exchange for a general release of claims and covenant not to sue. 
 1. Separation Date: December 7, 2017 was your
last day of employment with the Company (the “Separation Date”). 
 2. Acknowledgment
of Payment of Wages: By your signature below, you acknowledge that on December 7, 2017, we provided you a final paycheck in the gross amount of $13,390.31 for all wages, salary, bonuses, commissions, reimbursable expenses, accrued vacation
and any similar payments due you from the Company as of the Separation Date. Please promptly submit the requisite reimbursement documentation with respect to any outstanding business expenses that you have incurred on behalf of the Company, and the
Company will process and reimburse any such outstanding expenses in accordance with its policies. By signing below, you acknowledge that the Company does not owe you any other amounts. 

3. Separation Compensation: In exchange for your agreement to the general release and waiver of claims and covenant not to sue below
and your other promises herein, and subject to the terms and conditions of Section 2 of your Amended and Restated Retention and Ownership Change Event Agreement with the Company dated March 8, 2017 (the “Retention
Agreement,” Exhibit A hereto), the Company agrees to provide you with the following: 
 a.
Severance: The Company agrees to pay you, following the Effective Date (as defined below) of this Agreement and in accordance with the payment timing terms of Section 2(a) of the Retention Agreement, a lump sum payment in the gross
amount of $174,074.03, less applicable state and federal payroll deductions, which constitutes six (6) months of your final base salary. 

b. COBRA: Subject to the terms and conditions of Section 2(b) of the Retention Agreement, upon your timely election to continue
your existing health benefits under COBRA and commencing on the sixtieth (60th) day following the Separation Date, payment of premiums (including reimbursement of any such premiums paid during
such sixty (60) day 

 Mahesh Sundaram 

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period), and consistent with the terms of COBRA and the Company’s health insurance plan, the Company will pay the insurance premiums to continue you and your dependents’ existing health
benefits until the earlier of: (i) six (6) months following the Separation Date, or (ii) the date on which you first became eligible to obtain other group health insurance coverage. You will remain responsible for, and must continue to
pay, co-payments, etc. that you would have paid had your employment continued. Notwithstanding the immediately foregoing sentence, if you are eligible for, and the Company determines, in its sole
discretion, that it cannot pay, the COBRA premiums without a substantial risk of violating applicable law (including Section 2716 of the Public Health Service Act), the Company instead shall pay to you, on the first day of each calendar month,
a fully taxable cash payment equal to the applicable COBRA premiums for that month, subject to applicable tax withholdings (such amount, the “Special Cash Payment”), for the remainder of the period
you remain eligible for the benefit under the immediately foregoing sentence. You may, but are not obligated to, use such Special Cash Payments toward the cost of COBRA premiums. 

By signing below, you acknowledge that you are receiving the separation compensation outlined in this paragraph in consideration for waiving
your rights to claims referred to in this Agreement and that you would not otherwise be entitled to the separation compensation. 
 4.
Return of Company Property: You hereby warrant to the Company that you conducted a diligent and reasonable search and you believe you have returned to the Company all property or data of the Company of any type whatsoever that has been in
your possession or control. If you subsequently discover such property or data of the Company in your possession, you agree that you will immediately destroy such property and data. 

5. Confidential Information: You hereby acknowledge that you are bound by the attached Proprietary Information and Inventions Agreement
(Exhibit B hereto) and that as a result of your employment with the Company you have had access to the Company’s Proprietary Information (as defined in the agreement), that you will hold all Proprietary
Information in strictest confidence and that you will not make use of such Proprietary Information on behalf of anyone. Subject to paragraph 4, you further confirm that you have delivered to the Company all documents and data of any nature
containing or pertaining to such Proprietary Information and that you have not taken with you any such documents or data or any reproduction thereof. The Company also confirms that for purposes of paragraph 17 of Exhibit B, regarding non-solicitation of employees, the Company will not consider you to have violated such provision if an employee first approaches you about potential employment with any future employers. 

6. Equity: You currently beneficially own the following securities of the Company: 

a. Restricted Stock Units: Restricted Stock Units covering an aggregate of 107,500 shares of the Company’s Common Stock, issued
under the Company’s 2011 Equity Incentive Plan (the “Restricted Stock Unit Agreements”), whereby as of the Separation Date, 52,500 shares of which have vested in full and 55,000 shares of which
remain unvested (the “Unvested RSUs”). After the Separation Date, all of the Unvested RSUs shall be immediately cancelled. 

 Mahesh Sundaram 

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 b. Stock Options: Options to purchase an aggregate of 235,000 shares of the
Company’s Common Stock (the “Options”) pursuant to your Stock Option Agreements with the Company regarding stock options issued under the Company’s 2011 Equity Incentive Plan
(collectively referred to as the “Stock Option Agreements”) as follows: (A) on November 14, 2014 covering 200,000 shares, 154,166 of which are vested; (B) on March 1, 2016 covering
35,000 shares, 15,312 of which are vested. As of the Separation Date, the Options have vested as to 169,478 shares (the “Vested Shares”) and remain unvested as to 65,522 shares (the
“Unvested Shares”), all of which are unexercised. Your rights concerning the Options will continue to be governed by the Stock Option Agreements. Per the Stock Option Agreements, you
will have three (3) months following the Separation Date to exercise the Vested Shares. After this date, you will no longer have a right to exercise the Options as to any shares. 

c. The Stock Agreement, the Restricted Stock Agreement and the Stock Option Agreements are collectively referred to as the
“Equity Agreements.” The Equity Agreements are hereby amended consistent with this Agreement. 

7. Mutual General Release and Waiver of Claims: 

a. The payments and promises set forth in this Agreement are in full satisfaction of all accrued salary, vacation pay, bonus and commission
pay, profit-sharing, stock options, termination benefits or other compensation to which you may be entitled by virtue of your employment with the Company or your separation from the Company. To the fullest extent permitted by law, you hereby release
and waive any other claims you may have against the Company and its owners, agents, officers, shareholders, employees, directors, attorneys, subscribers, subsidiaries, affiliates, successors and assigns (collectively
“Releasees”), whether known or not known, including, without limitation, claims under the Retention Agreement, claims under any employment laws, including, but not limited to, claims of unlawful discharge, breach of contract,
breach of the covenant of good faith and fair dealing, fraud, violation of public policy, defamation, physical injury, emotional distress, claims for additional compensation or benefits arising out of your employment or your separation of
employment, claims under Title VII of the 1964 Civil Rights Act, as amended, the California Fair Employment and Housing Act and any other laws and/or regulations relating to employment or employment discrimination, including, without limitation,
claims based on age or under the Age Discrimination in Employment Act or Older Workers Benefit Protection Act, and/or claims based on disability or under the Americans with Disabilities Act. 

b. In exchange for the consideration received herein, to the fullest extent permitted by law, the Company, its parent, subsidiaries and
affiliates, hereby release and waive any claims they may have against you, whether known or not known, including without limitation, claims for breach of any obligations to the Company, including but not limited to claims for breach of fiduciary
duty and/or breach of any contractual or common law duty to the Company; provided that such release shall not apply to (i) any fraud committed by you against the Company or its subsidiaries, (ii) any material misappropriation of the trade
secrets or other intellectual property of the Company or its subsidiaries, or (iii) any material breach of your Employee Inventions and Proprietary Rights Assignment Agreement with the Company. 

 Mahesh Sundaram 

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	 	c.	By signing below, you and the Company expressly waive any benefits of Section 1542 of the Civil Code of the State of California, which provides as follows: 

“A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE CREDITOR DOES NOT KNOW OR SUSPECT TO EXIST IN HIS OR HER FAVOR AT
THE TIME OF EXECUTING THE RELEASE, WHICH IF KNOWN BY HIM OR HER MUST HAVE MATERIALLY AFFECTED HIS OR HER SETTLEMENT WITH THE DEBTOR.” 

d. You and the Company do not intend to release claims: (i) that you may not release as a matter of law. including but not limited to
claims for indemnity under California Labor Code section 2802; (ii) for potential additional severance and COBRA payments pursuant to Section 2 of the Retention Agreement in the event of a Section 409A Change in Control Event occurring on
or before the ninety (90th) day following the Separation Date and otherwise pursuant to the terms and conditions of Section 2 of the Retention Agreement; (iii) pursuant to your Indemnity Agreement dated May 26, 2015, or (iv) for
enforcement of this Agreement. To the fullest extent permitted by law, any dispute regarding the scope of this general release shall be determined by an arbitrator under the procedures set forth in the arbitration clause below. 

8. Mutual Covenant Not to Sue: 

a. To the fullest extent permitted by law, at no time subsequent to the execution of this Agreement will you or the Company pursue, or cause or
knowingly permit the prosecution of, in any state, federal or foreign court, or before any local, state, federal or foreign administrative agency, or any other tribunal, any charge, claim or action of any kind, nature and character whatsoever, known
or unknown, which you or the Company may now have, have ever had, or may in the future have against each other, which is based in whole or in part on any matter covered by this Agreement. 

b. Nothing in this section shall prohibit or impair you or the Company from complying with all applicable laws, nor shall this Agreement be
construed to obligate either party to commit (or aid or abet in the commission of) any unlawful act. 
 9. Protected Rights: You
understand that nothing in the General Release and Waiver of Claims and Covenant Not to Sue sections above, or otherwise in this Agreement, limits your ability to file a charge or complaint with the Equal Employment Opportunity Commission, the
National Labor Relations Board, the Occupational Safety and Health Administration, the Securities and Exchange Commission or any other federal, state or local government agency or commission (“Government
Agencies”). You further understand that this Agreement does not limit your ability to communicate with any Government Agencies or otherwise participate in any investigation or proceeding that may be conducted by any
Government Agency, including providing documents or other information, without notice to the Company. This Agreement does not limit your right to receive an award for information provided to any Government Agencies. 

 Mahesh Sundaram 

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 10. Mutual Nondisparagement: You agree that you will not disparage Releasees or their
products, services, agents, representatives, directors, officers, shareholders, attorneys, employees, vendors, affiliates, successors or assigns, or any person acting by, through, under or in concert with any of them, with any written or oral
statement. The Company agrees that its current officers and directors, for so long as they serve as an officer or director of the Company, will not disparage you with any written or oral statement. Nothing in this paragraph shall prohibit you or the
Company from providing truthful information in response to a subpoena or other legal process. 
 11. Arbitration: Except for any
claim for injunctive relief arising out of a breach of a party’s obligations to protect the other’s proprietary information, the parties agree to arbitrate, in Santa Clara County, California through JAMS, any and all disputes or claims
arising out of or related to the validity, enforceability, interpretation, performance or breach of this Agreement, whether sounding in tort, contract, statutory violation or otherwise, or involving the construction or application or any of the
terms, provisions, or conditions of this Agreement. Any arbitration may be initiated by a written demand to the other party. The arbitrator’s decision shall be final, binding, and conclusive. The parties further agree that this Agreement is
intended to be strictly construed to provide for arbitration as the sole and exclusive means for resolution of all disputes hereunder to the fullest extent permitted by law. The parties expressly waive any entitlement to have such controversies
decided by a court or a jury. 
 12. Confidentiality: The contents, terms and conditions of this Agreement must be kept confidential
by you and may not be disclosed except to your immediate family, accountant or attorneys or pursuant to subpoena or court order. You agree that if you are asked for information concerning this Agreement, you will state only that you and the Company
reached an amicable resolution of any disputes concerning your separation from the Company. Any breach of this confidentiality provision shall be deemed a material breach of this Agreement. 

13. No Admission of Liability: This Agreement is not and shall not be construed or contended by you to be an admission or evidence of
any wrongdoing or liability on the part of Releasees, their representatives, heirs, executors, attorneys, agents, partners, officers, shareholders, directors, employees, subsidiaries, affiliates, divisions, successors or assigns. This Agreement
shall be afforded the maximum protection allowable under California Evidence Code Section 1152 and/or any other state or federal provisions of similar effect. 

14. Complete and Voluntary Agreement: This Agreement, together with Exhibits A and B and the Equity Agreements, constitute the entire
agreement between you and Releasees with respect to the subject matter hereof and supersedes all prior negotiations and agreements, whether written or oral, relating to such subject matter. You acknowledge that neither Releasees nor their agents or
attorneys have made any promise, representation or warranty whatsoever, either express or implied, written or oral, which is not contained in this Agreement for the purpose of inducing you to execute the Agreement, and you acknowledge that you have
executed this Agreement in reliance only upon such promises, representations and warranties as are contained herein, and that you are executing this Agreement voluntarily, free of any duress or coercion. 

 Mahesh Sundaram 

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 15. Severability: The provisions of this Agreement are severable, and if any part of
it is found to be invalid or unenforceable, the other parts shall remain fully valid and enforceable. Specifically, should a court, arbitrator, or government agency conclude that a particular claim may not be released as a matter of law, it is the
intention of the parties that the general release, the waiver of unknown claims and the covenant not to sue above shall otherwise remain effective to release any and all other claims. 

16. Modification; Counterparts: Facsimile/PDF Signatures: It is expressly agreed that this Agreement may not be altered, amended,
modified, or otherwise changed in any respect except by another written agreement that specifically refers to this Agreement, executed by authorized representatives of each of the parties to this Agreement. This Agreement may be executed in any
number of counterparts, each of which shall constitute an original and all of which together shall constitute one and the same instrument. Execution of a facsimile or PDF copy shall have the same force and effect as execution of an original. 

17. Section 409A: Section 6 of the Retention Agreement is hereby incorporated in full in this Agreement by reference. 

18. Review of Separation Agreement: You understand that you may take up to twenty-one
(21) days to consider this Agreement (the “Review Period”) and, by signing below, affirm that you were advised to consult with an attorney prior to signing this agreement. You also understand you may
revoke this Agreement within seven (7) days of signing this document and that the separation compensation to be provided to you pursuant to Section 3 will be provided only at the end of that seven (7) day revocation period. 

19. Effective Date; Expiration Date: This Agreement is effective on the eighth (8th) day after you sign it and without revocation by
you (the “Effective Date”). This offer of separation benefits will automatically expire if not accepted by you by the end of the Review Period. 

 Mahesh Sundaram 

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 20. Governing Law: This Agreement shall be governed by and construed in accordance
with the laws of the State of California. 
 If you agree to abide by the terms outlined in this letter, please sign this letter below and
also sign the attached copy and return it to me. I wish you the best in your future endeavors. 
  

			
	Sincerely,
	
	Immersion Corporation
		
	By:	 	 /s/ Carl Schlachte

		 	Carl Schlachte
		 	Interim CEO

 READ. UNDERSTOOD AND AGREED 
  

									
	 

	 		 	Date:	 	 Dec 27, 2017	 	
	 Mahesh SundaramEX-10.1

 Exhibit 10.1 

SEPARATION AGREEMENT 

This Separation Agreement (this “Agreement”) is made and entered into effective as of the Effective Date (as
defined in Section 10), by and between Gevo, Inc. a Delaware corporation (the “Company”), and Mike Willis, a Colorado resident (“Employee”). 

RECITALS 

A.    Employee was employed until the Termination Date (as defined below) on an at-will basis by the Company pursuant to the terms of that certain Employment Agreement, dated as of April 10, 2014, by and between the Company and Employee (the “Employment Agreement”). 

B.    The purpose hereof (including the release set forth in Section 6) is to
set forth the terms and conditions of Employee’s separation from employment with the Company and to settle with finality, compromise, dispose of, and release certain claims that Employee may have had or may now have against the Company or any
of its respective affiliates, or any of their respective successors, assigns, or heirs (each of the foregoing, a “Protected Party”). 

C.    Capitalized terms used but not otherwise defined herein will have the meanings given to such terms
in the Employment Agreement. 
 AGREEMENT 

NOW, THEREFORE, in consideration of the foregoing, of the mutual covenants and agreements herein contained and for other good
and valuable consideration, the receipt, adequacy, and sufficiency of which are hereby acknowledged, the parties, intending legally to be bound, hereby agree as follows: 

1.    Termination. Employee has resigned from the Company, and Employee’s last day of
employment with the Company will be January 5, 2018 or such other date as mutually agreed between Employee and the Company’s Chief Executive Officer (the “CEO”) (the “Termination Date”). Employee
acknowledges that the Termination Date was the termination date of his employment for purposes of participation in and coverage under all benefit plans and programs sponsored by or through any Protected Party, other than as specified in
Section 2. Employee further acknowledges and agrees that, effective as of the Termination Date, he resigned from all positions, offices, committee memberships, and fiduciary capacities with any Protected Party or held with any other entity at
the direction or request of any Protected Party. Employee agrees to promptly execute and deliver such other documents as the Company will reasonably request to evidence such resignations. Lastly, Employee acknowledges and agrees that, after the
Termination Date, he has not and will not represent himself as being a current employee, officer, or representative of any Protected Party for any purpose unless otherwise specifically authorized to represent himself as being a representative of a
Protected Party by the CEO. On the Termination Date, in accordance with Company policy, the Company shall pay Employee all unpaid salary and unused time off accrued and earned as of the Termination Date. 

2.    Severance Benefits. Assuming Employee executes this Agreement and does not revoke it within
the Revocation Period and executes the release attached hereto as Exhibit A (the “Release Exhibit”), then, subject to Section 12, and in consideration for the general release in
Section 5 and the Release Exhibit and other representations, warranties, covenants, and agreements contained herein, on the Effective Date, the Company will pay to Employee, in accordance with the Company’s payroll
policies in effect on the Termination Date, an amount equal to $200,000 less applicable taxes and withholdings and on or after the Effective Date, the Company will provide Employee with an amount equal to one hundred percent (100%) of the cost for
him to continue his Company health care coverage pursuant to COBRA through June 30, 2018 (collectively, the “Severance Benefits”). 

 3.    The Company and Employee may enter into a consulting
agreement pursuant to which Employee shall provide certain advisory services to the Company, the terms of which shall be mutually agreed to by the CEO and the Employee. 

4.    Acknowledgments. Employee acknowledges and agrees that, notwithstanding anything in this
Agreement or the Employment Agreement to the contrary, (a) the Severance Benefits (i) are in full and final satisfaction and complete discharge of any and all liabilities and obligations of the Releasees (as defined in
Section 5) to Employee, monetarily or with respect to compensation, incentive equity, employee benefits, or otherwise, including any and all obligations arising under the Employment Agreement (other than those specified in
this Agreement), any alleged written or oral employment, equity, or other agreement, arrangement, or understanding between Employee and any Protected Party, or any policy, plan or procedure of any Protected Party (each, a “Policy”);
and (ii) exceed any payment, benefit, or other thing of value to which Employee might otherwise be entitled under any Policy or any agreement between Employee and any Protected Party, including under the Employment Agreement and (b) the
Company at all times reserves the right to provide any other payment in order to maximize the enforceability pursuant to a particular state’s laws of any covenants or obligations of Employee in this Agreement or the Employment Agreement.
WITHOUT LIMITATION AS TO THE FOREGOING AND NOTWITHSTANDING ANYTHING TO THE CONTRARY, EMPLOYEE SPECIFICALLY (i) WAIVES ANY AND ALL CLAIMS AGAINST THE RELEASEES AND RELEASES THE RELEASEES FROM ANY AND ALL CLAIMS RELATED TO BONUS AMOUNTS OR
SEVERANCE AMOUNTS UNDER THE EMPLOYMENT AGREEMENT OR OTHERWISE; (ii) ACKNOWLEDGES AND AGREES THAT EMPLOYEE IS NOT ENTITLED TO SUCH AMOUNTS UNDER THE EMPLOYMENT AGREEMENT OR OTHERWISE; AND (iii) ACKNOWLEDGES AND AGREES THAT THE BENEFITS
PROVIDED TO EMPLOYEE UNDER THIS AGREEMENT ARE IN LIEU OF AND IN EXCHANGE FOR ANY RIGHTS TO ANY SUCH AMOUNTS, AND EXCEED THE BENEFITS EMPLOYEE WOULD OTHERWISE BE ENTITLED TO UNDER THE EMPLOYMENT AGREEMENT OR OTHERWISE. 

5.    Release. In exchange for the Severance Benefits and other valuable consideration, and except
as necessary to enforce this Agreement, Employee, for himself and for his heirs, executors, administrators and assigns (referred to collectively as “Releasors”), forever releases and discharges each Protected Party, any of their
respective past, present, or future employees, officers, directors, partners, managers, shareholders, members, agents, representatives, counsel, employee benefit plans (and their fiduciaries and administrators), and any successors and assigns of any
of the foregoing (collectively, the “Releasees”), from any and all claims, demands, obligations, promises, controversies, damages, rights, actions, causes of action, fees and liabilities of any kind whatsoever, in law or in equity,
whether known or unknown (including any arising out of, or relating to Employee’s employment with or service to any Protected Party, the terms and conditions of such employment or service, or the termination of such employment or service
(including (i) any claim under the Age Discrimination in Employment Act, as amended (“ADEA”), or the Older Workers Benefit Protection Act which laws prohibit discrimination on account of age; (ii) any claim under Title VII
of the Civil Rights Act of 1964, as amended, which, among other things, prohibits discrimination/retaliation on account of race, color, religion, sex, and national origin; (iii) any claim under the Americans with Disabilities Act or Sections
503 and 504 of the Rehabilitation Act of 1973, each as amended; (iv) any claim under the Employee Retirement Income Security Act of 1974, as amended; (v) any claim under the Family and Medical Leave Act; (vi) any claim or other action
under the National Labor Relations Act, as amended; (vii) any claim under any state or local statute, rule, ordinance, or regulation; (viii) any claim under the False Claims Act; (ix) any other claim of discrimination, harassment or
retaliation in employment (whether based on federal, state or local 

  
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law, regulation, or decision); (x) any other claim (whether based on federal, state or local law, statutory or decisional) arising out of the terms and conditions of Employee’s employment
with and termination from the Company or the other Releasees; (xi) any claims for compensation of any kind, including bonuses, commissions, equity-based compensation (including stock options, profits interests, incentive units, and other
incentive equity), vacation pay, paid time off, family and medical leave pay, and expense reimbursements; (xii) any claims for back pay, front pay, wrongful discharge, whistleblowing, constructive discharge, promissory estoppel, detrimental
reliance, negligence, defamation, emotional distress, compensatory damages, liquidated damages, punitive damages, damages for alleged personal injury, reinstatement, or equitable relief; (xiii) any claims under federal, state, or local
occupational safety and health laws or regulations, all as amended; or (xiv) any claim for attorneys’ fees, costs, disbursements or the like) that Releasors ever had, now have or may have against any Releasee by reason of any actual or
alleged act, omission, transaction, practice, conduct, occurrence or other matter up to and including, or arising out of facts and circumstances occurring up to and including, the date Employee signs this Agreement (each of the foregoing, a
“Claim”). By virtue of the foregoing, Employee agrees that he has waived any damages and other relief available to his (including money damages, equitable relief and reinstatement) under the Claims waived in this
Section 5. Employee acknowledges that Employee has been informed that Employee might have specific Claims under the ADEA. Employee specifically waives such Claims under the ADEA to the extent such Claims arose on or prior
to the date this Agreement is executed by Employee. 
 6.    Pending Claims; Relief Waived.
Employee represents and warrants that he has not commenced, maintained, prosecuted or participated in any action, arbitration, charge, complaint or proceeding of any kind that is presently pending in any court, or before any administrative or
investigative body or agency (whether public, quasi-public, or private) (“Pending Claims”), against or involving any of the Releasees. If there are any such Pending Claims, Employee will immediately notify the Company of any such
Pending Claim and will immediately take all actions necessary to cause such claims or actions to be withdrawn with prejudice. Employee acknowledges and agrees that by virtue of the foregoing, he has waived any relief available (including monetary
damages, equitable relief and reinstatement) under any of the Claims waived in this Agreement. Therefore Employee agrees that he will not accept any award or settlement from any source or proceeding (including any proceeding brought by any other
Person) with respect to any Claim waived in this Agreement, including any Pending Claims. Employee waives all rights that Employee may have based on any unknown and undiscovered facts. Notwithstanding anything to the contrary, this Agreement does
not prevent Employee from filing a charge with the Equal Employment Opportunity Commission (but in such case Employee waives Employee’s right to any monetary recovery). 

7.    No Admission. This Agreement is not intended, and will not be construed, as an admission of
the Company or any other Releasee has violated any federal, state, local or foreign law (statutory or decisional), ordinance or regulation, breached any contract or committed any wrong whatsoever against Employee. 

8.    ADEA Provisions. Employee acknowledges that he: (a) has carefully read this Agreement in
its entirety; (b) has had an opportunity to consider the terms hereof for at least twenty-one (21) days; (c) is hereby advised by the Company in writing to consult with an attorney of his choice in
connection with this Agreement; (d) fully understands the significance of all of the terms hereof and has discussed them with an attorney of his choice, or has had a reasonable opportunity to do so; (e) has had answered to his satisfaction
any questions he has asked with regard to the meaning and significance of any of the provisions hereof; (f) understands that he has seven (7) days in which to revoke this Agreement (as described in Section 9)
after signing it; and (g) is signing this Agreement voluntarily and of his free will and agrees to abide by all the terms and conditions contained herein. 

  
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 9.    Revocation / Effective Date. Employee may accept
this Agreement by signing it and delivering it to Gevo, Inc., 345 Inverness Drive South, Bldg C, Ste 310, Englewood, CO 80112, Attention: Patrick R. Gruber, Email: pgruber@gevo.com, on or before the twenty-first (21st) day after he receives this Agreement. After signing this Agreement, Employee will have seven (7) days (the “Revocation Period”) to revoke his decision by indicating his desire
to do so in writing delivered to the Company at the above address by no later than the last day of the Revocation Period. If the last day of the Revocation Period falls on a Saturday, Sunday or holiday, the last day of the Revocation Period will be
deemed to be the next business day. In the event (a) Employee does not accept this Agreement as set forth above or (b) Employee revokes this Agreement during the Revocation Period, then this Agreement, including the obligation of the
Company to provide the Severance Benefits, will be deemed automatically null and void. 

10.    Post-Employment Release of Claims by Employee. As consideration for the payments and benefits
Employee receives under this Agreement, Employee also agrees to execute the Release Exhibit attached hereto as Exhibit A on (and not before) the Termination Date. Notwithstanding any other terms of this Agreement, the Company will have no obligation
to make any payment to or provide any benefit to or for the benefit of Employee: (i) unless and until Employee executes this Agreement and the revocation period described in Section 9 expires; (ii) unless and until Employee executes
Exhibit A to this Agreement on the Termination Date and the revocation period described therein expires; and (iii) unless Employee is in full compliance with the terms of this Agreement. If Employee fails to execute and return Exhibit A to the
Company, or revokes the same, Employee forfeits Employee’s right to all payments and benefits provided in this Agreement. If Employee does not revoke the Release Exhibit during the revocation period set forth therein, the effective date of this
Agreement will be the later of the eighth (8th) day after Employee signs the Release Exhibit or the day after the last day of the revocation period set forth in the Release Exhibit (the
“Effective Date”). 
 11.    Return of Property. Employee represents and agrees
that, within three (3) days of the Termination Date, Employee will deliver to the Company (and will not keep in Employee’s possession, recreate or deliver to anyone else) any and all Company property or property belonging to the Releasees,
including, but not limited to, any and all Confidential Information (as defined by the Employment Agreement), and any and all devices, equipment, documents and information (whether stored in hard copy or electronic format), keys, and credit cards,
and any reproductions of any of the foregoing items, whether obtained or developed by Employee pursuant to Employee’s employment with the Company or otherwise belonging to the Company, unless otherwise specifically authorized by the CEO.
Employee further agrees to conduct a diligent search of all of the electronic documents and information, electronic devices (including, without limitation, computers, hard drives, flash drives, and mobile devices), remote and virtual storage and
file systems, emails and email accounts, voicemails, text messages, instant messaging conversations and systems, and any other devices, facilities, systems, accounts, or media that has electronic data storage or saving capabilities, in
Employee’s possession, custody, or control, for any copies or iterations of Confidential Information, and to immediately delete the same. 

12.    Return of Payments. Employee acknowledges, understands, and agrees that the purpose of this
Agreement is to assure the Releasees that, in return for the payments made pursuant to this Agreement, the Releasees will not be put to the expense and inconvenience of defending any claim, charge, or lawsuit that has been released by Employee in
this Agreement. Therefore, Employee agrees that in the event Employee files a claim against any of the Releasees that has been released and discharged in this Agreement, the Company has the right to terminate any remaining or outstanding portion(s)
of the Severance Benefits and Employee will forfeit Employee’s rights to the same, and the Company shall have the right to recoup any portion(s) of the Severance Benefits already paid or provided to Employee, or the value thereof. Employee
further agrees that, in the event of Employee’s breach of the Continuing Obligations set forth in Section 6 above (including its incorporated provisions), the Company 

  
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will be entitled to terminate any remaining or outstanding portion(s) of the Severance Benefits and Employee will forfeit Employee’s rights to the same, and the Company shall have the right
to recoup any portion(s) of the Severance Benefits already paid or provided to Employee, or the value thereof. Notwithstanding anything to the contrary, Employee shall not be subject to forfeiture of the Severance Benefits for challenges to the
validity of the release of claims under the ADEA or OWBPA, and nothing in this Agreement shall prohibit Employee from challenging the validity of the release of claims under the ADEA or OWBPA, or is intended to impose any condition precedent, any
penalty, or any other limitation adversely affecting the right of Employee to challenge validity of the release of claims under the ADEA or OWBPA. 

13.    Entire Agreement Amendment; Waivers. This Agreement represents the entire understanding
between the parties hereto with respect to the subject matter hereof and supersedes any and all agreements, understandings, discussions (including the Employment Agreement), whether written or oral, between Employee and any Protected Party, with
respect to the subject matter hereof. No party has relied upon any other communication or representation whatsoever in entering into this Agreement. This Agreement may be amended or modified only by a writing executed by the parties to this
Agreement. None of the terms of this Agreement will be deemed to be waived or amended by either party unless such a waiver or amendment specifically references this Agreement and is in writing signed by an authorized representative of the party to
be bound. Any such signed waiver will be effective only in the specific instance and for the specific purpose for which it was made or given. 

14.    Miscellaneous. All representations, warranties, covenants, and agreements of the Company and
Employee contained in or made pursuant to this Agreement will survive the execution and delivery hereof. The terms and provisions of Sections 8-11 of the Employment Agreement are incorporated herein by reference as if set forth herein in their
entirety and will apply mutatis mutandis hereto. 

15.    Non-Disparagement. Employee shall not criticize,
denigrate or otherwise disparage the Company or any Releasee. The Company and Releasees shall not criticize, denigrate or otherwise disparage Employee. 

[The remainder of this page is intentionally left blank.] 

  
 -5- 

 EMPLOYEE ACKNOWLEDGES THAT EMPLOYEE HAS READ THIS ENTIRE AGREEMENT CAREFULLY,
AS THIS AGREEMENT INCLUDES A RELEASE OF ALL KNOWN AND UNKNOWN CLAIMS (AS ALLOWED BY LAW) WHICH EMPLOYEE MAY HAVE AGAINST RELEASEES, INCLUDING CLAIMS PURSUANT TO THE AGE DISCRIMINATION IN EMPLOYMENT ACT. 

IN WITNESS WHEREOF, the undersigned parties have caused this Agreement to be duly executed as of the dates set forth below.

  

			
	COMPANY:
	
	 GEVO, INC.

		
	 By:
	 	 /s/ Patrick Gruber

	 Name: Patrick Gruber

	 Title: Chief Executive Officer

	
	 Date: January 2, 2018

	
	EMPLOYEE:
	
	 /s/ Mike Willis

	Mike Willis
	
	Date: January 2, 2018

 EXHIBIT A 

RELEASE 

This Release (“Release”) is made by Mike Willis (“Employee”) in favor of Gevo, Inc.
(“the Company”) and the Releasees (as defined below). Capitalized terms not otherwise defined herein will have the meanings ascribed to them in the Separation Agreement (the “Agreement”) between the parties. 

By this Release, Employee intends to release and settle any and all claims that Employee may have against the Company and
other Releasees, including any claims related to the hiring of Employee, Employee’s employment, Employee’s compensation while employed, the termination of Employee’s employment, and any and all claims that Employee may have against
the Company as a result of any act, occurrence, decision, event or omission occurring at any time prior to the signing of this Release. Employee hereby agrees as follows: 

1.    General Release. In exchange for the good and valuable consideration set forth in the
Agreement, the sufficiency of which is hereby acknowledged, Employee, for himself and for his heirs, executors, administrators and assigns (referred to collectively as “Releasors”), forever releases and discharges each Protected
Party, any of their respective past, present, or future employees, officers, directors, partners, managers, shareholders, members, agents, representatives, counsel, employee benefit plans (and their fiduciaries and administrators), and any
successors and assigns of any of the foregoing (collectively, the “Releasees”), from any and all claims, demands, obligations, promises, controversies, damages, rights, actions, causes of action, fees and liabilities of any kind
whatsoever, in law or in equity, whether known or unknown (including any arising out of, or relating to Employee’s employment with or service to any Protected Party, the terms and conditions of such employment or service, or the termination of
such employment or service (including (i) any claim under the Age Discrimination in Employment Act, as amended (“ADEA”), or the Older Workers Benefit Protection Act which laws prohibit discrimination on account of age; (ii) any
claim under Title VII of the Civil Rights Act of 1964, as amended, which, among other things, prohibits discrimination/retaliation on account of race, color, religion, sex, and national origin; (iii) any claim under the Americans with
Disabilities Act or Sections 503 and 504 of the Rehabilitation Act of 1973, each as amended; (iv) any claim under the Employee Retirement Income Security Act of 1974, as amended; (v) any claim under the Family and Medical Leave Act;
(vi) any claim or other action under the National Labor Relations Act, as amended; (vii) any claim under any state or local statute, rule, ordinance, or regulation; (viii) any claim under the False Claims Act; (ix) any other
claim of discrimination, harassment or retaliation in employment (whether based on federal, state or local law, regulation, or decision); (x) any other claim (whether based on federal, state or local law, statutory or decisional) arising out of the
terms and conditions of Employee’s employment with and termination from the Company or the other Releasees; (xi) any claims for compensation of any kind, including bonuses, commissions, equity-based compensation (including stock options,
profits interests, incentive units, and other incentive equity), vacation pay, paid time off, family and medical leave pay, and expense reimbursements; (xii) any claims for back pay, front pay, wrongful discharge, whistleblowing, constructive
discharge, promissory estoppel, detrimental reliance, negligence, defamation, emotional distress, compensatory damages, liquidated damages, punitive damages, damages for alleged personal injury, reinstatement, or equitable relief; (xiii) any
claims under federal, state, or local occupational safety and health laws or regulations, all as amended; or (xiv) any claim for attorneys’ fees, costs, disbursements or the like) that Releasors ever had, now have or may have against any
Releasee by reason of any actual or alleged act, omission, transaction, practice, conduct, occurrence or other matter up to and including, or arising out of facts and circumstances occurring up to and including, the date Employee signs this Release
(each of the foregoing, a “Claim”). By virtue of the foregoing, Employee agrees that he has waived any damages and other relief available to his (including money damages, equitable relief and reinstatement) under the Claims waived
in this Section. Employee 

 
acknowledges that Employee has been informed that Employee might have specific Claims under the ADEA. Employee specifically waives such Claims under the ADEA to the extent such Claims arose on or
prior to the date this Release is executed by Employee. 
 2.    ADEA Provisions and Effective
Date. Employee acknowledges that he: (a) has carefully read this Release in its entirety; (b) has had an opportunity to consider the terms hereof for at least twenty-one (21) days; (c) is
hereby advised by the Company in writing to consult with an attorney of his choice in connection with this Release; (d) fully understands the significance of all of the terms hereof and has discussed them with an attorney of his choice, or has
had a reasonable opportunity to do so; (e) has had answered to his satisfaction any questions he has asked with regard to the meaning and significance of any of the provisions hereof; (f) understands that he has seven (7) days in
which to revoke this Release (as described below) after signing it; and (g) is signing this Release voluntarily and of his free will and agrees to abide by all the terms and conditions contained herein. Employee may accept this Release by
signing it and delivering it to Gevo, Inc., 345 Inverness Drive South, Bldg C, Ste 310, Englewood, CO 80112, Attention: Patrick R. Gruber, Email: pgruber@gevo.com, on or before the twenty-first (21st) day after he receives this Release. After
signing this Release, Employee will have seven (7) days (the “Revocation Period”) to revoke his decision by indicating his desire to do so in writing delivered to the Company at the above address by no later than the last day
of the Revocation Period. If the last day of the Revocation Period falls on a Saturday, Sunday or holiday, the last day of the Revocation Period will be deemed to be the next business day. In the event (a) Employee does not accept this Release
as set forth above or (b) Employee revokes this Release during the Revocation Period, then this Release, including the obligation of the Company to provide the Severance Benefits, will be deemed automatically null and void. 

EMPLOYEE ACKNOWLEDGES THAT EMPLOYEE HAS READ THIS ENTIRE RELEASE CAREFULLY, AS THIS RELEASE INCLUDES A RELEASE OF ALL KNOWN
AND UNKNOWN CLAIMS (AS ALLOWED BY LAW) WHICH EMPLOYEE MAY HAVE AGAINST RELEASEES, INCLUDING CLAIMS PURSUANT TO THE AGE DISCRIMINATION IN EMPLOYMENT ACT. 

IN WITNESS WHEREOF, Employee has executed this Release on the date signed by Employee below. 

 

	
	 EMPLOYEE:

	
	 /s/ Mike Willis

	 Mike Willis

	 Dated: January 2, 2018

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