Document:

EX-10.1

 Exhibit 10.1 

AGREEMENT 
 This
voluntary agreement concerning my separation of employment from Allison Transmission, Inc., and related releases and covenants (“Agreement”) is entered into between Allison Transmission, Inc. (“Allison”) and Michael G. Headly
(“I” “me” or “my”), wherein the parties agree as follows: 
 1. Definition. Throughout this
Agreement, the term “Allison” used alone, shall encompass the following: (a) Allison Transmission, Inc. and any subsidiary, parent company, affiliated entity, related entity or division thereof, affiliate or shareholder; and
(b) any current or former officer, director, trustee, agent, employee, representative, insurer, or employee benefit or welfare program or plan (including the administrators, trustees, fiduciaries, and insurers of such program or plan) of an
entity referenced in or encompassed by subparagraph 1(a). 
 2. Consideration. In exchange for me executing (and not
revoking) this Agreement and complying with the other covenants contained herein (including continued employment through my last day of employment as set out in this Agreement), I shall receive the following benefits: 

 

	 	(a)	The time-based vesting of any of my unvested and outstanding options and restricted stock granted to me by the Company (collectively, the “Equity Awards”) shall immediately vest on the Separation Date on a
pro-rata basis, which pro-rata vesting shall be determined by multiplying the number of shares subject to the Equity Award that were scheduled to vest on the applicable vesting date following my Separation Date multiplied by a fraction, (i) the
numerator of which is the number of months from the applicable vesting commencement date of the Equity Award through the Separation Date (rounded up), and (ii) the denominator of which is the number of months from the applicable vesting
commencement date of the Equity Award through the applicable vesting date (rounded up). As an example, if 200 restricted shares were granted and commenced vesting on December 20, 2013 and scheduled to vest based on the passage of time on
December 1, 2016), and my Separation Date was January 30, 2016, then a total of 144 shares will vest on the Separation Date (200 shares multiplied by 26/36ths or .7222 and rounded to the
nearest whole share). The “vesting commencement date” shall be the grant date of the applicable Equity Award unless stated otherwise in the Equity Award agreement. 

 

	 	(b)	 A pro-rata portion of the restricted stock granted to me on February 19, 2015 pursuant to a Restricted Stock Grant Notice with respect to a
maximum of 9,142 shares (the “PSA”) will remain eligible to vest based on the achievement of performance goals set forth in Section 2.3(a) of the PSA, and will remain subject to the terms and conditions of the PSA, other than
Section 2.3(b). The maximum amount of pro-rata shares subject to the PSA that will remain eligible to vest shall be determined by multiplying 9,142 by a fraction, (i) the numerator of which is the number of months from January 1, 2015
through the Separation Date (rounded 

  
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up), and (ii) the denominator of which is 36 (the “Eligible PSA Shares”). The target number of Eligible PSA Shares will equal 50% of the Eligible PSA Shares. Any portion of the PSA
shares that are not Eligible PSA Shares on the Separation Date will be forfeited immediately on the Separation Date and any portion of the Eligible PSA Shares that do not vest on the Determination Date (as defined in the PSA) will be forfeited
immediately on the Determination Date. For example, if Allison achieves a TSR (as defined in the PSA) that is at the 25th percentile of the TSR of the component members of Allison’s Peer
Group (as defined in the PSA) over the performance period that ends on December 31, 2017, then 25% of the Eligible PSA Shares will vest on the Determination Date. 

 

	 	(c)	I will have until the earlier of the expiration date of any vested options or thirty-six (36) months from my Separation Date to exercise any vested options, subject to the terms of the applicable Allison equity
plan. 

  

	 	(d)	A pro-rata portion of the iComp payment I would have received for the year in which my Separation Date falls, to be paid when iComp payments for that year are normally paid. I understand and agree that this iComp
payment will be based on the iComp formula, company performance, my target bonus percentage at the time of my Separation Date, Allison’s normal iComp policies and practices and the Company’s discretion exercised thereunder. I also
understand that the Company may, at its sole discretion, choose not to fund an iComp plan or exercise discretion in funding an iComp plan, and I will not receive a payment if the plan is not funded or my payment may be modified if the Company
exercises its discretion in funding an iComp plan. 

 The actions by Allison in this Paragraph 2 reflect consideration
provided to me over and above anything of value to which I am already entitled. For the avoidance of doubt, no portion of my Equity Awards that are subject to performance based vesting, if any, will be accelerated pursuant to this Section 2.

 Any benefit provided to me in Paragraph 2 shall be subject to all appropriate taxes, deductions and withholdings. In accelerating the
vesting of equity as specified in this Agreement, Allison makes no representation as to the tax consequences or liability arising from this action including, without limitation, under Section 409A of the Internal Revenue Code of 1986, as
amended. Moreover, the parties understand and agree that my tax consequences and/or liability arising from such payments shall be my sole responsibility. To this extent, I acknowledge and agree that I will pay any and all income tax which may be
determined to be due by me in connection with the actions described in this Paragraph 2. I also agree to indemnify Allison for any and all tax liability (including, but not limited to, fines, penalties, interest, and costs and expenses, including
attorneys’ fees) incurred by me arising from or relating to the payments described in this Paragraph 2 and/or imposed on Allison by the Internal Revenue Service or any other taxing agency or tribunal as a result of my failure to timely pay
taxes. 

  
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 3. Employment. My last day of employment shall be March 31, 2016 (the
“Separation Date”) and my retirement shall be effective April 1, 2016 (the “Retirement Date”). Because I am receiving benefits under this Agreement, I acknowledge and agree that I will not apply for reemployment with
Allison.  
 4. My Continued Support. I agree that, during and after my employment, I will: (a) lend my full
support to and assist with the transition of my duties and any associated restructuring of the business; (b) cooperate and make myself reasonably available to Allison personnel in the event my assistance is needed to locate, understand, or
clarify work previously performed by me or to assist with other work-related issues relating to my employment; (c) cooperate, assist, and make myself reasonably available to Allison personnel or Allison agents on an as-needed
basis in order to respond to, defend, or address any issues or claims deemed important to Allison or to respond to, defend, or address any complaint or claim filed, or any issue raised, by any person or entity who has sued Allison or that does
business with Allison or is associated with Allison in any way; (d) provide truthful and accurate sworn testimony in the form of deposition, affidavit, and/or court testimony if requested by Allison. Allison will strive to keep the need for
assistance after my Separation Date to a minimum, and will of course reimburse me for reasonable out-of-pocket expenses incurred as a result of my assistance, unless such remuneration would be inappropriate or otherwise prohibited
under existing law. 
 5. Non-Disparagement and Public Service. I agree that: (a) I will not serve on, consult, or
advise, any technology board, company board, committee or forum that is in any way related to the industries that Allison serves, or in which Allison’s business, technology or products are used, discussed or disclosed, unless approved in
writing by Allison; (b) I will not make any statements or representations that disparage, demean, or impugn Allison, including its technology and products, including without limitation any statements impugning the personal or professional
character of any director, officer, or employee for Allison, or encourage or assist others to make any such statements or representations; (c) I will not or participate in public speeches or forums (including forums in which I may make
anonymous or pseudonymous statements) that disparage, demean, or impugn Allison, its personnel, or its technology and products; (d) I will not take any position in any venue or format that is contrary to Allison’s claims and position
concerning its technology and products, and I will support Allison’s claims and position on its technology and products if asked and choose to respond; and (e) I will not directly or indirectly seek to cause any person or organization to
discontinue or limit their current relationship with Allison. I agree that the terms and requirements in this Paragraph are reasonably necessary to protect the legitimate business interests of Allison. 

6. Use and Disclosure of Allison Confidential Information. I agree that: (a) I will not use or disclose confidential,
sensitive, or proprietary information concerning Allison obtained by me during my employment, or as a result of my position, with Allison. For purposes of this Agreement, “confidential information” includes, without limitation, all
materials and information (whether written or not) about Allison’s current or former employees (including their compensation, benefits, or other personnel or personal information), contracts, business plans, customers, suppliers, products,
services, pricing, promotions, processes, research, finances, purchasing, sales, marketing, accounting, costs, improvements, discoveries, technology, software, business methods, formulae, inventions, quality, internal communications, production,
output, profit margins, and/or any other aspect of Allison’s business or operations  

  
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which are not generally known by the public at large and/or which provide Allison with a competitive advantage. The commitments in this paragraph are in addition to and shall not void or detract
from my commitments in any other confidentiality agreements I have executed with Allison. 
 7. Limited Non-Competition and
Non-Solicitation. As Senior Vice President, Global Marketing Sales and Services, I have broad knowledge of sensitive competitive information concerning Allison’s entire business. From the date this Agreement is signed through eighteen
months from my Separation Date, I shall not: 
  

	 	(a)	Anywhere in the world where Allison sales or operates; 

  

	 	(b)	Directly or indirectly own (excluding securities held in a mutual fund and any holdings of less than 2% of the total issue), manage, finance, operate, control or participate in ownership, management, or operation of, be
on the board of, or act in a competitive capacity as an agent or consultant of, or be employed in a competitive capacity with, any entity or business: 

  

	 	(i)	engaged in the design, manufacture, sale or service of medium or heavy duty commercial or military transmissions of any type; 

  

	 	(ii)	that purchases transmissions from or builds vehicles using transmissions manufactured by any business described in (x) above; or 

 

	 	(iii)	that supplies parts, materials or services to any business described in (x) above. 

  

	 	(c)	Assist in the research and development of products or services: 

  

	 	(i)	where such research and development would be aided by the trade secret, confidential and/or proprietary information learned in the course of my employment with Allison; or 

 

	 	(ii)	which compete with Allison products and services. 

  

	 	(d)	I further agree that I will not in a competitive capacity, on behalf of any person or entity other than Allison, Inc. directly or indirectly: 

 

	 	(i)	solicit, divert (or attempt to solicit or divert) or accept business from any customer of Allison, Inc. with whom I have had contact (either directly or indirectly) or over which I was responsible during the last two
years of my employment, or about whom I obtained trade secret, confidential and/or proprietary information; or 

  

	 	(ii)	 solicit, divert (or attempt to solicit or divert) or accept business from any identified prospective customer of Allison, Inc. with

  
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whom I have had contact (either directly or indirectly) or over which I was responsible during my last year of employment, or about whom I obtained trade secret, confidential and/or proprietary
information. 

  

	 	(e)	I also agree that I will not directly or indirectly encourage, solicit, induce, or attempt to encourage, solicit or induce any employee, agent or representative of Allison to leave his/her employment (or terminate
his/her relationship) with Allison (or devote less than full time efforts to that business), and I will not directly or indirectly hire or attempt to hire, for any competitive or other position with any competitor or other business, any person who
is an employee, agent or representative of Allison (or who has been an employee, agent or representative of Allison at any time within the preceding 180 days). 

8. Company and Personal Property. I affirm that, on or before my Separation Date, I will return all items requested by Allison,
which may include, but are not limited to, my identification badge and any other access cards, company equipment, documents, memoranda, records, files, notes, usb drives and other storage media, portable hard drives, credit cards, keys, computers,
and any other matter or materials (from whatever source, including information electronically stored) that is the property of, or that was purchased or provided by, Allison, including any copies of the foregoing. I agree not to remove any Allison
documents, information or property from Allison, or retain any duplicates, copies or excerpts thereof, and shall immediately return any such material in the event I discover I am in possession of such material. 

9. Inventions. I acknowledge that all inventions, innovations, improvements, developments, methods,
designs, analyses, drawings, reports and all similar or related information (whether or not patentable) which relate to Allison’s actual or anticipated business, research and development for existing or future products or services and which are
conceived, developed, contributed to, made or reduced to practice by me (either solely or jointly with others) while employed by Allison (“Work Product”) belongs to Allison and I hereby assign, and agree to assign, all Work Product to
Allison. I further agree to perform all acts necessary or desirable by Allison to permit and assist Allison in obtaining and enforcing patents, copyrights, trade secrets or other intellectual property rights with respect to such inventions or Work
Product in any and all countries. I further irrevocably designate and appoint Allison and its duly authorized officers and agents as my agent and attorney-in-fact to act for me and in my name and stead, to execute and file any applications or
related filings and do all other lawfully permitted acts to further the prosecution and issuance of patents, copyrights, trade secret rights or other intellectual property rights with respect to any inventions or Work Product with the same legal
force and effect as if executed by me. 
 10. Confidentiality. To the extent this Agreement is not publicly available,
I agree to keep the terms of this Agreement and the fact of its existence confidential and will not disclose any information concerning it to anyone except my immediate family, tax advisor, legal counsel, or anyone required by law to know the
contents of the Agreement, provided that I inform any of these specified persons that I am bound by a confidentiality covenant and that the person is not to disclose any information concerning the Agreement. 

  
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 11. General Release and Waiver. I (for me, my agents, assigns,
heirs, executors, and administrators) release and discharge Allison from any claim, demand, action, or cause of action, known or unknown, which arose at any time from the beginning of time to the date I execute this Agreement, and waive all claims
against Allison, including but not limited to all claims relating to, arising out of, or in any way connected with Employee’s interactions with Allison and/or my employment with Allison, the cessation of employment, or the compensation or
benefits payable in connection with that employment or the cessation of that employment, including (without limitation) any claim, demand, action, or cause of action, including claims for attorneys’ fees, based on but not limited to:
(a) Title VII of the Civil Rights Act of 1964, as amended, 42 U.S.C. § 2000(e), et seq.; (b) The Americans With Disabilities Act, as amended, 42 U.S.C. § 12101, et seq.; (c) The Equal Pay Act, as
amended, 29 U.S.C. § 206, et seq.; (d) The Lilly Ledbetter Fair Pay Act of 2009; (e) The Family and Medical Leave Act of 1993, 29 U.S.C. § 2601, et seq.; (f) the National Labor Relations Act, 29
U.S.C. § 151, et seq.; (g) The Employee Retirement Income Security Act, as amended, 29 U.S.C. § 1001 et seq.; (h) The Fair Credit Reporting Act, as amended, 15 U.S.C. § 1681 et seq.;
(i) The Civil Rights Act of 1866, 42 U.S.C. § 1981 et seq.; (j) The Age Discrimination in Employment Act (“ADEA”), 29 U.S.C. § 621, et seq.; (k) any agreement, representation, promise,
understanding, policy, practice, or potential entitlement (regardless of the source); (l) past or future wages, severance, compensation, vacation pay, benefits, bonuses, commissions, fringe benefits, or other forms of consideration, payment, or
remuneration, except for claims to enforce payment of those sums explicitly identified in Paragraph 2; (m) The Indiana Civil Rights Law, Ind. Code 22-9-1, et seq.; and (n) any wage law including, without limitation, The
Indiana Wage Payment and Wage Claims Acts, Ind. Code 22-2-5-2, 22-2-2-4, 22-2-5-9, 22-2-9-1, et seq. I further agree to release and discharge Allison and waive all claims related to any other
federal, state, or local law, whether arising or emanating from statute, executive order, regulation, code, common law, or other source, including, but not limited to, all actions sounding in tort, contract, and/or any doctrine of good faith and
fair dealing. I also confirm that there are currently no claims against Allison for unpaid benefits, wages, or other payments (other than possible retirement or pension benefits, the eligibility and payment of which are governed by the applicable
plans, and the deferred compensation benefits for which I may be eligible). Notwithstanding the foregoing, this Agreement is not intended to operate as a waiver of any retirement or pension benefits that are vested, the eligibility and entitlement
to which shall be governed by the terms of the applicable plan. This Agreement also does not operate as a waiver of, or otherwise affect, any vested benefits I may have pursuant to the deferred compensation plan. Moreover, nothing in this Paragraph
or Agreement shall be interpreted to waive or extinguish any rights which – by express and unequivocal terms of law – may not under any circumstances be waived or extinguished or prevent me from seeking unemployment benefits pursuant to
applicable law. 
 12. Covenant Not to Sue. I agree that I will never sue or file a lawsuit or administrative claim against
Allison including, without limitation, any lawsuit concerning or in any way related to my employment with Allison, the termination of that employment, the compensation or benefits payable in connection with my employment, or any other interaction or
relationship with Allison, and that no such suit is currently pending. Should I violate any aspect of this Paragraph, I agree that any suit shall be null and void, and must be summarily dismissed or withdrawn. I also agree that if a claim or charge
of any kind should be raised, brought, or filed in my name or on my behalf, I waive any right to, and agree not to take, any resulting award. This Paragraph and this Agreement shall not operate to waive or bar any claim which – by 

  
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express and unequivocal terms of law – may not under any circumstances be waived or barred. Moreover, this Agreement shall not operate to waive rights or claims under the ADEA if those
rights or claims arise after the date I sign this Agreement, nor preclude me from challenging the validity of the Agreement under the ADEA. This Paragraph also shall not preclude me from enforcing the terms of this Agreement or enforcing any rights
I may have pursuant to the any pension, deferred compensation or retirement plan from which I have vested benefits. 
 13. Early
Termination of My Employment. Nothing in this Agreement is intended to alter my existing at-will employment relationship, meaning that the employment relationship can be terminated by me or Allison Transmission prior to the last date of
employment as set out in this Paragraph for any or no reason, with or without notice. If, prior to my last date of employment as set out in this Agreement, I terminate my employment for any reason, or Allison terminates my employment for Cause, I
will forfeit the benefits provided in Paragraph 2 of this agreement, except $5,000 of any iComp payment I may be due, which shall constitute consideration for my commitments in this Agreement. “Cause” means (i) an intentional act of
fraud, embezzlement, theft or any other material violation of law; (ii) breach of my obligations under this Agreement; (iii) the willful and continued failure to substantially perform my duties for Allison (other than as a result of
incapacity due to physical or mental illness); or (iv) willful conduct by me that is demonstrably and materially injurious to Allison, monetarily or otherwise. For the avoidance of doubt, failure to meet performance standards or objectives, by
itself, does not constitute “Cause”. 
 14. Severability. The parties expressly agree that the terms of this
Agreement are reasonable and enforceable. Moreover, the provisions of this Agreement are severable, and the invalidity of any one or more provisions shall not affect or limit the enforceability of the remaining provisions. In the unlikely event that
a court of competent jurisdiction determines that any of the terms, provisions, or covenants contained in this Agreement are unreasonable or unenforceable, the court shall limit the application of such term, provision, or covenant, or modify any
such term, provision, or covenant, and proceed to enforce the Agreement as so limited or modified, to the maximum extent permitted by law. 

15. Applicable Law and Venue. This Agreement shall be interpreted, enforced, and governed under the laws of Indiana. Any action
arising from or related to this Agreement shall be litigated exclusively in a state or federal court located in Marion County, Indiana and I waive any defenses to this jurisdiction and venue. 

16. Conditions and Remedies. Should I ever breach any provision or obligation under this Agreement, the parties agree that the
range of remedies includes, but is not limited to the following: 
  

	 	(a)	I shall forego and no longer be entitled to the benefits promised in Paragraph 2. 

  

	 	(b)	I shall pay Allison’s defense costs, expenses, and reasonable attorneys’ fees if a court of competent jurisdiction finds that I have breached this Agreement. 

  
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	 	(c)	If a court of competent jurisdiction finds that I have breached this Agreement, I shall reimburse Allison via certified check for the value of anything provided by Allison, Inc. pursuant to Paragraph 2, save $1000. In
the event this reimbursement provision is triggered, I agree that the remaining provisions of the Agreement shall remain in full force and effect. 

  

	 	(d)	A violation of this Agreement would cause irreparable harm to Allison but in an amount incapable of precise determination. Should I violate this Agreement, Allison shall be entitled to injunctive relief in addition to
any other available remedy or form of legal and equitable relief. 

 Nothing in this Paragraph is intended to limit or
restrict any other rights or remedies Allison may have by virtue of this Agreement or otherwise. 
 17. Application. This
Agreement shall apply to me, as well as to my heirs, executors, administrators, assigns, and successors. This Agreement also shall apply to, and inure to the benefit of, Allison, the predecessors, successors, and assigns of Allison, and each past,
present, or future employee, agent, representative, officer, or director of Allison. 
 18. Disclaimer of Liability.
This Agreement shall not be construed as an admission of liability or wrong-doing by either party but is entered into in an effort to provide me with a severance package and organize an orderly transition of my duties. 

19. Effective Date. This Agreement may only be accepted during the 21-day period after I receive this Agreement. In the event I
sign this Agreement within the twenty-one (21) days following receipt, I shall have an additional seven (7) days to revoke the Agreement (with any revocation needing to be mailed, e-mailed or faxed to the attention of General Counsel,
Legal Department, One Allison Way, Indianapolis, Indiana 46222 (e-mail: eric.scroggins@allisontransmission.com; fax: 317-242-5759)). This Agreement shall not become effective, and none of the benefits set forth in this Agreement will become
due, until after the Effective Date of this Agreement (the “Effective Date” being the first day after the seven (7)-day revocation period has expired without revocation being exercised). 

20. Complete Agreement. This Agreement sets forth the complete agreement between the parties relating to any and all payments or
obligations owed or potentially owed to me by Allison and to the other subjects identified herein. I acknowledge and agree that, in executing this Agreement, I do not rely upon and have not relied upon any representations or statements not set forth
herein made by Allison with regard to the subject matter, basis, or effect of this Agreement, the benefits to which I am or may be entitled, or any other matter. Notwithstanding the foregoing, nothing in this Agreement is intended to or shall limit,
supersede, nullify, or affect any other duty or responsibility I may have or owe to Allison by virtue of any separate agreement or obligation. 

21. Reaffirmation Of Release and My Other Covenants Upon Separation. Notwithstanding any other provision of this Agreement,
receipt of money or benefits pursuant to Paragraph 2 are conditioned upon me first signing the attached Reaffirmation of Release and  

  
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Other Covenants clause (the “Reaffirmation Clause”) and the passage of the “Reaffirmation Effective Date,” as defined in the Reaffirmation Clause. 

[Remainder of Page Intentionally Left Blank] 

  
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 Knowledge and Understanding 

I acknowledge that: (a) I received this Agreement on December 17, 2015; (b) I have been and hereby am advised to consult with an attorney prior
to executing this Agreement and I have been given a reasonable amount of time within which to consult with an attorney; (c) I have been given a period of twenty-one (21) days within which to consider this Agreement; (d) I have availed
myself of all opportunities I deemed necessary to make a knowing, voluntary, and fully informed decision; (e) I have signed this Agreement free of duress or coercion; and (f) I am fully aware of my rights, and have carefully read and fully
understand all provisions of this Agreement before signing. 
  

							
	AGREED TO BY:	 		 		 	
				
		 		 	Allison Transmission, Inc.	 	
				
	 /s/ Michael G. Headly
	 		 	 /s/ Eric C. Scroggins
	 	
	Signature	 		 	Signature	 	
				
	 Michael G. Headly
	 		 	 Eric C. Scroggins
	 	
	 Printed Name 
	 		 	Printed Name	 	
				
	 December 17, 2015
	 		 	 December 17, 2015
	 	
	Dated:	 		 	Dated:	 	

  
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 REAFFIRMATION OF RELEASE & OTHER COVENANTS 

I agree that in partial consideration for receipt of the benefits described in Paragraph 2 of the Agreement, I – as of the date on which
I sign this Reaffirmation Clause — reaffirm and recommit to my covenants, promises, and obligations under the Agreement above as if fully and independently restated herein. I also: 

 

	(a)	Agree that I have again been (and am hereby) advised to consult with an attorney prior to executing this Reaffirmation Clause, that I have been given a period of twenty-one (21) days within which to consider this
Reaffirmation Clause (including all which it entails and encompasses); 

  

	(b)	Agree that this Reaffirmation Clause may only be signed during the twenty-one (21) day period after my Retirement Date. In the event I sign the Reaffirmation Clause within the prescribed twenty-one (21) day
period, I shall have an additional seven (7) days after signature to revoke it, with any revocation needing to be delivered according to Paragraph 19 of the Agreement. Accordingly, the benefits provided as consideration for this Reaffirmation
Clause shall not become due or payable until after the Reaffirmation Effective Date (with “Reaffirmation Effective Date” defined to mean the first day after the 7-day revocation period has expired
without revocation being exercised). 

 REAFFIRMATION CLAUSE AGREED TO BY: 

 

							
		 		 	Allison	 	
				
	  
	 		 	  
	 	
	Signature	 		 	Signature	 	
				
	  
	 		 	  
	 	
	Michael G. Headly	 		 	Printed Name	 	
				
	  
	 		 	  
	 	
	Dated:	 		 	Dated:	 	

  
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 Exhibit 10.1 

AMENDMENT NO. 1 TO THE 

INTERESTS PURCHASE AGREEMENT 

THIS AMENDMENT NO. 1 TO THE INTERESTS PURCHASE AGREEMENT (this “Amendment”) is entered as of December 17, 2015, by and
among SOANE ENERGY LLC, a Delaware limited liability company (“Seller”), FAIRMOUNT SANTROL INC. (f/k/a Fairmount Minerals, Ltd.), a Delaware corporation (“Buyer”), and SELF-SUSPENDING PROPPANT LLC, a Delaware
limited liability company (the “Company”). Seller, Buyer and the Company are sometimes herein referred to individually as a “Party” and collectively as the “Parties”. 

RECITALS 
 WHEREAS, the
Parties have entered into that certain Interests Purchase Agreement, dated April 30, 2013 (the “Purchase Agreement”; capitalized terms used herein without definition shall have the meanings ascribed thereto in the Purchase
Agreement); and 
 WHEREAS, the Parties desire to (a) agree upon the date that shall be deemed the Earn-Out Commencement Date for
purposes of determining the Earn-Out Period pursuant to the Purchase Agreement and (b) amend and modify the terms of the Purchase Agreement as set forth herein. 

NOW, THEREFORE, in consideration of the mutual covenants and obligations contained herein, the Parties hereby agree as follows: 

 

	1.	The Earn-Out Commencement Date shall be deemed October 1, 2015. 

  

	2.	Section 2.4(a)(2) of the Purchase Agreement shall be amended and restated in its entirety to read as follows: 

  

	    	“(2) within sixty (60) days following the last day of the Second Measuring Period, an amount (the “Second Payment”), equal to (x) the greater of (i) Fifteen Million Dollars
($15,000,000) and (ii) fifty percent (50%) of the cumulative Product Margin for all then-completed Measuring Periods (if positive), minus (y) the total of all Earn-Out Payments previously paid by Buyer to Seller for all prior
completed Measuring Periods, minus (z) the total of all Marathon Payments made prior to the completion of the Second Measuring Period (including any Marathon Payments made prior to the Earn-Out Commencement Date) that were not satisfied
from the Escrow Amount or previously subtracted from a prior Earn-Out Payment;” 

  

	3.	Section 2.4(e) and Section 8.4 of the Purchase Agreement shall be amended by deleting the references therein to “the Interim Transfer Date” and substituting therefor “an Interim Transfer
Date”. 

  

	4.	Section 2.4(f) of the Purchase Agreement shall be amended and restated in its entirety to read as follows: 

  
 1 

 “(f) Earn-Out Note. The parties understand and agree that the unsecured contingent
right to receive the Earn-Out Amount shall be represented by the Earn-Out Note. Notwithstanding the foregoing, if (i) the aggregate amount of the First Payment and the Second Payment fails to equal or exceed the amount (the “First
Interim Threshold”) equal to (x) Fifteen Million Dollars ($15,000,000) minus (y) the total of all Marathon Payments made prior to the completion of the Second Measuring Period (including any Marathon Payments made prior to
the Earn-Out Commencement Date) that were not satisfied from the Escrow Amount and Buyer does not pay the First Interim Buy-Out Amount pursuant to Section 2.4(g) following Seller’s issuance of its First Interim Foreclosure Notice,
or (ii) the aggregate amount of the First Payment, the Second Payment and the Third Payment fails to equal or exceed the amount (the “Second Interim Threshold”) equal to (x) Forty Five Million Dollars ($45,000,000)
minus (y) the total of all Marathon Payments made prior to the completion of the Third Measuring Period (including any Marathon Payments made prior to the Earn-Out Commencement Date) that were not satisfied from the Escrow Amount and
Buyer does not pay the Second Interim Buy-Out Amount pursuant to Section 2.4(g) following Seller’s issuance of its Second Interim Foreclosure Notice, or (iii) the aggregate amount of the Earn-Out Payments made by Buyer during
the Earn-Out Period plus the First Interim Buy-Out Amount (if any) plus the Second Interim Buy-Out Amount (if any) made by Buyer fails to equal or exceed the amount (the “Final Threshold”) equal to (1) One Hundred Ninety Five
Million Dollars ($195,000,000) minus (2) the total of all Marathon Payments made prior to the completion of the Earn-Out Period (including any Marathon Payments made prior to the Earn-Out Commencement Date) that were not satisfied from
the Escrow Amount and Buyer does not pay the Final Buy-Out Amount pursuant to Section 2.4(h) following Seller’s issuance of its Final Foreclosure Notice, then Seller shall be entitled to exercise any rights it may have to foreclose
(the “Foreclosure”) upon the Interim Security or the Final Security, as applicable, under Section 2.4(g) or Section 2.4(h), as applicable, and the Earn-Out Note shall thereafter terminate as provided in
Section 2.4(i) below.” 
  

	5.	Section 2.4(g) of the Purchase Agreement shall be amended and restated in its entirety to read as follows: 

“(g) Interim Foreclosures. 

(i) If the aggregate of the First Payment and the Second Payment fails to equal or exceed the First Interim Threshold, then
upon such failure Seller shall receive a security interest in fifty-one percent (51%) of the Interests (the “Interim Security”) and have the right, as its sole and exclusive remedy for such failure, and exercisable by
delivering written notice to Buyer within sixty (60) days following its payment of the Second Payment (the “First Interim Foreclosure Notice”), to Foreclose upon the Interim Security within twenty (20) days following
Seller’s delivery of the First Interim Foreclosure Notice (subject to Section 2.4(i)). Notwithstanding the foregoing, upon Seller’s delivery of the First Interim Foreclosure Notice, Buyer shall have the right (the
“First Interim Buy-Out Right”), exercisable by delivering written notice to Seller within fifteen (15) days following Buyer’s receipt of the First Interim Foreclosure Notice (or such longer period of time as is provided
for pursuant to Section 2.4(i)), to terminate Seller’s right of Foreclosure under this Section 2.4(g)(i) by paying Seller an amount equal to the difference between the First Interim Threshold and the aggregate amount of
the 

  
 2 

 
First Payment and the Second Payment paid by Buyer to Seller (the “First Interim Buy-Out Amount”). Upon the failure of Seller to deliver the First Interim Foreclosure Notice
within the sixty (60) day period specified above or upon the payment of the First Interim Buy-Out Amount (which shall be payable by Buyer within thirty (30) days of Buyer’s delivery to Seller of its notice to exercise its First
Interim Buy-Out Right), Seller shall have no further recourse against Buyer with respect to the failure of the aggregate of the First Payment and the Second Payment to equal or exceed the First Interim Threshold, provided that nothing in this clause
(i) shall limit the rights of the Seller (including Seller’s interest in the Interim Security) pursuant to the terms of Section 2.4(g)(ii) below. If Buyer does not exercise its First Interim Buy-Out Right following
Seller’s proper delivery of the First Interim Foreclosure Notice, then (A) the transfer of the Interim Security shall be consummated by Buyer and Seller on the date (the “First Interim Transfer Date”) that is five
(5) Business Days following the earliest of (i) Buyer’s written election not to exercise the First Interim Buy-Out Right, (ii) the expiration (without payment by Buyer of the First Interim Buy-Out Amount) of thirty (30) days
following Buyer’s delivery to Seller of its notice to exercise its First Interim Buy-Out Right, or (iii) the expiration of the fifteen (15) day period (or such longer period of time as is provided pursuant to
Section 2.4(i)) following Buyer’s receipt of the First Interim Foreclosure Notice without Buyer’s exercise of the First Interim Buy-Out Right; (B) Seller shall be responsible for the payment of all transfer Taxes relating
to the transfer of such Interim Security from Buyer to Seller; and (C) as a condition to such transfer, (1) Buyer and Seller shall enter into an Operating Agreement in the form attached as Exhibit D hereto (the “Company
Operating Agreement”), which Company Operating Agreement will govern the operation and management of the Company following the consummation of the transfer of the Interim Security, (2) Buyer shall release, or cause to be released, all
Liens on the Interim Security and/or assets of the Company, and (3) any remaining payment obligations pursuant to the Marathon Agreement shall be assigned and assumed by Seller (and Buyer shall be released from the same and indemnified by
Seller for such obligations). 
 (ii) If the Seller has not Foreclosed on the Interim Security (or was not entitled to
Foreclose on the Interim Security) pursuant to Section 2.4(g)(i) above and the aggregate of the First Payment, the Second Payment, the Third Payment and the First Interim Buy-Out Amount paid by Buyer pursuant to
Section 2.4(g)(i) above (if any) fails to equal or exceed the Second Interim Threshold, then upon such failure Seller shall receive a security interest in the Interim Security and have the right, as its sole and exclusive remedy for such
failure, and exercisable by delivering written notice to Buyer within sixty (60) days following its payment of the Third Payment (the “Second Interim Foreclosure Notice”), to Foreclose upon the Interim Security within twenty
(20) days following Seller’s delivery of the Second Interim Foreclosure Notice (subject to Section 2.4(i)). Notwithstanding the foregoing, upon Seller’s delivery of the Second Interim Foreclosure Notice, Buyer shall have
the right (the “Second Interim Buy-Out Right”), exercisable by delivering written notice to Seller within fifteen (15) days following Buyer’s receipt of the Second Interim Foreclosure Notice (or such longer period of time
as is provided for pursuant to Section 2.4(i)), to terminate Seller’s right of Foreclosure under this Section 2.4(g)(ii) by paying Seller an amount equal to the difference between (x) the Second Interim Threshold
and (y) the sum of (1) the aggregate amount of the First 

  
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Payment, the Second Payment and the Third Payment paid by Buyer to Seller and (2) the First Interim Buy-Out Amount paid by Buyer pursuant to Section 2.4(g)(i) above (if any)
(such difference, the “Second Interim Buy-Out Amount”). Upon the failure of Seller to deliver the Second Interim Foreclosure Notice within the sixty (60) day period specified above or upon the payment of the Second Interim
Buy-Out Amount (which shall be payable by Buyer within thirty (30) days of Buyer’s delivery to Seller of its notice to exercise its Second Interim Buy-Out Right), Seller’s aforementioned security interest in the Interim Security and
right of Foreclosure upon the Interim Security shall be terminated, Buyer shall maintain ownership of such Interim Security and Seller shall have no further recourse against Buyer with respect to the failure of the aggregate of the First Payment,
the Second Payment and the Third Payment (plus the First Interim Buy-Out Amount paid by Buyer pursuant to Section 2.4(g)(i) above (if any)) to equal or exceed the Second Interim Threshold. If Buyer does not exercise its Second Interim
Buy-Out Right following Seller’s proper delivery of the Second Interim Foreclosure Notice, then: (A) the transfer of the Interim Security shall be consummated by Buyer and Seller on the date (the “Second Interim Transfer
Date”) that is five (5) Business Days following the earliest of (1) Buyer’s written election not to exercise the Second Interim Buy-Out Right, (2) the expiration (without payment by Buyer of the Second Interim Buy-Out
Amount) of thirty (30) days following Buyer’s delivery to Seller of its notice to exercise its Second Interim Buy-Out Right, or (3) the expiration of the fifteen (15) day period (or such longer period of time as is provided
pursuant to Section 2.4(i)) following Buyer’s receipt of the Second Interim Foreclosure Notice without Buyer’s exercise of the Second Interim Buy-Out Right; (B) Seller shall be responsible for the payment of all transfer
Taxes relating to the transfer of such Interim Security from Buyer to Seller; and (C) as a condition to such transfer, (1) Buyer and Seller shall enter into the Company Operating Agreement, which Company Operating Agreement will govern the
operation and management of the Company following the consummation of the transfer of the Interim Security, (2) Buyer shall release, or cause to be released, all Liens on the Interim Security and/or assets of the Company, and (3) any
remaining payment obligations pursuant to the Marathon Agreement shall be assigned and assumed by Seller (and Buyer shall be released from the same and indemnified by Seller for such obligations). 

(iii) For purposes of clarity, upon the consummation of the transfer to Seller of the Interim Security, the Earn-Out Note will
terminate as provided in Section 2.4(i), Seller’s right to a security interest in the remaining Interests and to Foreclose upon the Final Security pursuant to Section 2.4(h) hereof shall terminate and Seller shall have
no further recourse against Buyer with respect to the failure of the aggregate amount of the First Payment, the Second Payment and the Third Payment (plus the First Interim Buy-Out Amount paid by Buyer pursuant to Section 2.4(g)(i) (if
any)) to equal or exceed the Second Interim Threshold.” 
  

	6.	Section 2.4(h) of the Purchase Agreement shall be amended and restated in its entirety to read as follows: 

“(h) Final Foreclosure. If (i) the Seller has not Foreclosed on the Interim Security (or was not entitled to Foreclose on the
Interim Security) pursuant to Section 2.4(g) and (ii) the total aggregate Earn-Out Payments during the Earn-Out Period plus the First Interim Buy-Out Right paid by Buyer (if any) plus the Second Interim Buy-Out Right

  
 4 

 
paid by Buyer (if any) fails to equal or exceed the Final Threshold, then upon such failure Seller shall receive a security interest in eighty percent (80%) of the Interests (the
“Final Security”) and shall have the right, as its sole and exclusive remedy for such failure, and exercisable by delivering written notice to Buyer within sixty (60) days following its payment of the Fifth Payment (the
“Final Foreclosure Notice”), to Foreclose upon the Final Security within twenty (20) days following Seller’s delivery of the Final Foreclosure Notice (subject to Section 2.4(i)). Notwithstanding the foregoing,
upon Seller’s delivery of the Final Foreclosure Notice, Buyer shall have the right (the “Final Buy-Out Right”), exercisable by delivering written notice to Seller within fifteen (15) days following Buyer’s receipt of
the Final Foreclosure Notice (or such longer time period as is provided for pursuant to Section 2.4(i)), to terminate Seller’s right of Foreclosure under this Section 2.4(h) by paying Seller an amount (the “Final
Buy-Out Amount”) equal to the difference between (1) the Final Threshold and (2) the total aggregate Earn-Out Payments made by Buyer during the Earn-Out Period plus the First Interim Buy-Out Right paid by Buyer (if any) plus the
Second Interim Buy-Out Right paid by Buyer (if any). Upon the failure of Seller to deliver the Final Foreclosure Notice within the sixty (60) day period specified above or upon the payment of the Final Buy-Out Amount (which shall be payable by
Buyer within thirty (30) days of Buyer’s delivery to Seller of its notice to exercise its Final Buy-Out Right), Seller’s aforementioned security interest in the Final Security and right of Foreclosure upon the Final Security shall be
terminated, Buyer shall maintain ownership of such Final Security and Seller shall have no further recourse against Buyer with respect to the failure of the aggregate Earn-Out Payments during the Earn-Out Period plus the First Interim Buy-Out Right
paid by Buyer (if any) plus the Second Interim Buy-Out Right paid by Buyer (if any) to equal or exceed the Final Threshold. If Buyer does not exercise its Final Buy-Out Right following Seller’s proper delivery of the Final Foreclosure Notice,
then (A) the transfer of the Final Security shall be consummated by Buyer and Seller on the date (the “Final Transfer Date”) that is five (5) Business Days following the earliest of (i) Buyer’s written election
not to exercise the Final Buy-Out Right, (ii) the expiration (without payment by Buyer of the Final Buy-Out Amount) of thirty (30) days following Buyer’s delivery to Seller of its notice to exercise its Final Buy-Out Right, or
(iii) the expiration of the fifteen (15) day period following Buyer’s receipt of the Final Foreclosure Notice (or such longer time period as is provided for pursuant to Section 2.4(i)) without Buyer’s exercise of the
Final Buy-Out Right; (B) Seller shall be responsible for the payment of all transfer Taxes relating to the transfer of such Final Security from Buyer to Seller; and (C) as a condition to such transfer, (1) Buyer and Seller shall enter
into the Company Operating Agreement, which Company Operating Agreement will govern the operation and management of the Company following the consummation of the transfer of the Final Security, (2) Buyer shall release, or cause to be released,
all Liens on the Final Security and/or assets of the Company, and (3) any remaining payment obligations pursuant to the Marathon Agreement shall be assigned and assumed by Seller (and Buyer shall be released from the same and indemnified by
Seller for such obligations).” 
  

	7.	Section 2.4(i) of the Purchase Agreement shall be amended and restated in its entirety to read as follows: 

  
 5 

 “(i) Termination of Earn-Out Note; Buyer’s License. Upon any
Interim Transfer Date or the Final Transfer Date, as applicable, (i) the Earn-Out Note, including any obligations of either party thereunder (or under Section 2.4(a)), will terminate and extinguish in its entirety,
(ii) Seller’s rights to review the records of Buyer pursuant to Section 2.4(c) hereof will terminate and extinguish in their entirety, and (iii) Buyer and its Affiliates will be granted a perpetual, non-exclusive license
to use the Seller IP Assets in the Field at a royalty rate to be negotiated in good faith between Buyer and Seller during the time period (the “Royalty Rate Negotiation Period”) between (x) the First Interim Foreclosure Notice
and the expiration of Buyer’s First Interim Buy-Out Right, (y) the Second Interim Foreclosure Notice and the expiration of Buyer’s Second Interim Buy-Out Right or (z) the Final Foreclosure Notice and the expiration of
Buyer’s Final Buy-Out Right, as applicable (which royalty rate will adjust throughout the term of the license agreement to be no less favorable than the lowest royalty rates payable by third parties for license of the Technology (the
“MFN Right”)), pursuant to a license agreement in substantially the form attached as Exhibit E hereto (the “Buyer License Agreement”). Buyer and Seller shall negotiate in good faith during the Royalty Rate
Negotiation Period. If Buyer and Seller cannot come to agreement on a royalty rate in the Royalty Rate Negotiation Period, then Buyer and Seller shall mutually select a valuation firm experienced in determining market rates for such royalties (the
fees of which firm shall be split equally by Buyer and Seller); provided that (i) if Buyer and Seller are unable to agree upon a firm within five (5) Business Days of the start of deliberation on the matter, each of Buyer and Seller
shall select one such firm and such firms shall mutually select the firm to determine the royalty, which selection shall be binding on Buyer and Seller and (ii) the time period pursuant to which Buyer may exercise its First Interim Buy-Out
Right, Second Interim Buy-Out Right or or Final Buy-Out Right, as applicable, shall be extended until five (5) Business Days following the determination by such valuation firm. The royalty rate determined by such valuation firm shall be binding
on Buyer and Seller (subject to the MFN Right).” 
  

	8.	Section 9.3 of the Purchase Agreement is amended by deleting the last sentence thereof and substituting therefor: 

“Any amounts offset by Buyer pursuant to this Section 9.3 shall be considered a paid portion of an Earn-Out Payment for all
other purposes of this Agreement (including, without limitation, for purposes of satisfaction of the First Interim Threshold, the Second Interim Threshold and the Final Threshold).” 

 

	9.	The definition of “Interim Security” in Article 10 of the Purchase Agreement shall be amended by deleting the reference therein to “Section 2.4(g)” and substituting therefor “Section
2.4(g)(i)”. 

  

	10.	Article 10 of the Purchase Agreement shall be amended by deleting the following definitions therefrom: 

“Final Call Notice” is defined in Section 2.4(h). 

“Final Call Option” is defined in Section 2.4(h). 

  
 6 

 “Interim Buy-Out Amount” is defined in Section 2.4(g). 

“Interim Buy-Out Right” is defined in Section 2.4(g). 

“Interim Call Notice” is defined in Section 2.4(g). 

“Interim Threshold” is defined in Section 2.4(f). 

“Interim Transfer Date” is defined in Section 2.4(g). 

 

	11.	Article 10 of the Purchase Agreement shall be amended by inserting the following definitions in alphabetical order: 

“Final Foreclosure Notice” is defined in Section 2.4(h). 

“First Interim Buy-Out Amount” is defined in Section 2.4(g)(i). 

“First Interim Buy-Out Right” is defined in Section 2.4(g)(i). 

“First Interim Foreclosure Notice” is defined in Section 2.4(g)(i). 

“First Interim Threshold” is defined in Section 2.4(f). 

“First Interim Transfer Date” is defined in Section 2.4(g)(i). 

“Interim Transfer Date” shall mean the First Interim Transfer Date or Second Interim Transfer Date, as applicable. 

“Second Interim Buy-Out Amount” is defined in Section 2.4(g)(ii). 

“Second Interim Buy-Out Right” is defined in Section 2.4(g)(ii). 

“Second Interim Foreclosure Notice” is defined in Section 2.4(g)(ii). 

“Second Interim Threshold” is defined in Section 2.4(f). 

“Second Interim Transfer Date” is defined in Section 2.4(g)(ii). 

 

	12.	Except as expressly amended or supplemented hereby, the Parties acknowledge that the Purchase Agreement remains in full force and effect in accordance with the provisions thereof. 

 

	13.	This Amendment may be executed and delivered in multiple counterparts, each of which shall be deemed an original, and all of which together shall constitute one and the same instrument. A facsimile or other copy of a
signature shall be deemed an original for purposes of this Amendment. 

  

	14.	Sections 11.1 through 11.13 of the Purchase Agreement are incorporated herein by reference mutadis mutandis. 

  
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 [THE REMAINDER OF THIS
PAGE IS INTENTIONALLY LEFT BLANK.] 

  
 8 

 IN WITNESS WHEREOF, the parties hereto have executed this Amendment No. 1 to Interests
Purchase Agreement as of the date first written above. 
  

			
	SOANE ENERGY, LLC
	
	/s/ Martha Groves
		
	Name:	 	 Martha Groves

		
	Title:	 	 Chief Financial Officer

	
	FAIRMOUNT SANTROL INC.
	
	/s/ David J. Crandall
		
	Name:	 	 David J. Crandall

		
	Title:	 	 Vice President, General Counsel and Secretary

	
	SELF-SUSPENDING PROPPANT LLC
	
	/s/ David J. Crandall
		
	Name:	 	 David J. Crandall

		
	Title:	 	 Vice President, General Counsel and Secretary

 Signature Page to Amendment to Purchase Agreement

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