Document:

EX-10.9

 Exhibit 10.9 

STYRON US HOLDING, INC. 

EMPLOYMENT AGREEMENT 

EMPLOYMENT AGREEMENT (this “Agreement”), dated as of December 22, 2011, among Styron US Holding, Inc., a Delaware
corporation (the “Company”), Bain Capital Everest Manager Holding SCA, a Luxembourg incorporated company (“Parent”) and John A. Feenan (the “Executive”). 

W I T N E S S E T H 

WHEREAS, the Company desires to employ the Executive as Executive Vice President and Chief Financial Officer of the Company and to pay
all of the Executive’s compensation other than certain equity awards described in this Agreement; and 
 WHEREAS, Parent desires
to grant the Executive certain equity awards described in this Agreement and to guarantee the cash compensation of the Executive payable by the Company hereunder; and 

WHEREAS, the Company, Parent and the Executive desire to enter into this Agreement as to the terms of the Executive’s employment
with the Company. 
 NOW, THEREFORE, in consideration of the foregoing, of the mutual promises contained herein and of other good and
valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follows: 
 1.
POSITION AND DUTIES. 
 (a) During the Employment Term (as defined in Section 2 hereof), the Executive shall serve as
Executive Vice President and Chief Financial Officer of the Company and shall be a member of the Company’s Executive Leadership Team. In this capacity, the Executive shall have the duties, authorities and responsibilities commensurate with the
duties, authorities and responsibilities of persons in similar capacities in similarly sized companies, and such other executive duties, authorities and responsibilities as may reasonably be assigned to the Executive that are not inconsistent with
the Executive’s position as Executive Vice President and Chief Financial Officer of the Company. The Executive’s principal place of employment with the Company shall be in the Philadelphia, Pennsylvania metropolitan area. The Executive
shall report directly to the Company’s Chief Executive Officer. 
 (b) During the Employment Term, the Executive shall devote all of
the Executive’s business time, energy, business judgment, knowledge and skill and the Executive’s reasonable best efforts to the performance of the Executive’s duties with the Company, provided that the foregoing shall not
prevent the Executive from (i) serving on the boards of directors of non-profit organizations and, with the prior written approval of the Board, other for profit companies, (ii) participating in charitable, civic, educational,
professional, community or industry affairs, and (iii) managing the Executive’s passive personal investments so long as such activities in the aggregate do not violate Section 11 hereof, interfere or conflict with the
Executive’s duties hereunder or create a business or fiduciary conflict. 

  
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 2. EMPLOYMENT TERM. The Company agrees to employ the Executive pursuant to the terms of
this Agreement, and the Executive agrees to be so employed, for a term of three (3) years (the “Initial Term”) commencing upon January 16, 2012 (the “Effective Date”). On each anniversary of the Effective
Date following the Initial Term, the term of this Agreement shall be automatically extended for successive one-year periods, provided, however, that either party hereto may elect not to extend this Agreement by giving written notice to
the other party at least ninety (90) days prior to any such anniversary date. Notwithstanding the foregoing, the Executive’s employment hereunder may be earlier terminated in accordance with Section 7 hereof, subject to
Section 8 hereof. The period of time between the Effective Date and the termination of the Executive’s employment hereunder shall be referred to herein as the “Employment Term.” 

3. BASE SALARY. The Company agrees to pay the Executive a base salary for calendar year 2011 at an annual rate of not less than
$585,000, payable in accordance with the regular payroll practices of the Company, but not less frequently than monthly. The Executive’s base salary shall be subject to annual review by the Board (or a committee thereof) during the first ninety
(90) days of each calendar year, and the base salary in respect of such calendar year may be increased above, but not decreased below, its level for the preceding calendar year, by the Board. The base salary as determined herein and adjusted
from time to time shall constitute “Base Salary” for purposes of this Agreement. 
 4. ANNUAL BONUS. During the
Employment Term, the Executive shall be eligible for an annual cash performance bonus (an “Annual Bonus”) in respect of each calendar year that ends during the Employment Term, to the extent earned based on performance against
objective performance criteria. The performance criteria for any particular calendar year shall be determined in good faith by the Board, no later than ninety (90) days after the commencement of such calendar year. The Executive’s targeted
Annual Bonus for a calendar year shall equal 75% of the Executive’s Base Salary for such calendar year (the “Target Bonus”) if target levels of performance for such year are achieved, with greater or lesser amounts (including
zero) paid for performance above and below target (such greater and lesser amounts to be determined by a formula established by the Board for such year when it establishes the targets and performance criteria for such year); provided that the
Executive’s maximum Annual Bonus for any calendar year during the Employment Term shall equal 200% of the Target Bonus for such calendar year. The Executive’s Annual Bonus for a calendar year shall be determined by the Board after the end
of the applicable calendar year based on the level of achievement of the applicable performance criteria, and shall be paid to the Executive in the calendar year following the calendar year to which such Annual Bonus relates at the same time annual
bonuses are paid to other senior executives of the Company, subject to continued employment at the time of payment (except as otherwise provided in Section 8 hereof). 

5. EQUITY AWARD. On or promptly following the Effective Date, you will be granted incentive securities or interests in one or more
incentive securities, generally representing the right to participate in 0.90% of the capital appreciation of Parent. 

  
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 6. EMPLOYEE BENEFITS. 

(a) BENEFIT PLANS. During the Employment Term, the Executive shall be entitled to participate in any employee benefit plan (including
the Company’s health, welfare and retirement plans, and coverage for the Executive’s annual physical examination) that the Company, Parent or any of their direct or indirectly controlled subsidiaries (each an “Affiliate”)
has adopted or may adopt, maintain or contribute to and which benefit any of the senior executives of the Company, Parent or any Affiliate, on a basis no less favorable than that applicable to any such senior executives, subject to satisfying the
applicable eligibility requirements, except to the extent such plans are duplicative of the benefits otherwise provided hereunder. The Executive’s participation in any such employee benefit plan shall be subject to the terms of the applicable
plan documents and generally applicable Company policies. Notwithstanding the foregoing, the Company may modify or terminate any employee benefit plan at any time, if and to the extent allowed pursuant to the terms of such plan, provided that any
such amendment may have no more adverse affect on the Executive than on any other participant in such plan. The Company may provide perquisites to the Executive at the discretion of the Board. 

(b) VACATIONS. During the Employment Term, the Executive shall be entitled to four (4) weeks of paid vacation per calendar year
(pro rated for partial years) in accordance with the Company’s policy on accrual and use applicable to employees as in effect from time to time. 

(c) BUSINESS EXPENSES. Upon presentation of reasonable substantiation and documentation as the Company may specify from time to time,
the Executive shall be reimbursed in accordance with the Company’s expense reimbursement policies as in effect from time to time, for all reasonable out-of-pocket business expenses incurred and paid by the Executive during the Employment Term
and in connection with the performance of the Executive’s duties hereunder. 
 (d) RELOCATION; TEMPORARY HOUSING; COMMUTING
EXPENSES. The Executive agrees to relocate the Executive’s primary residence to the Philadelphia, Pennsylvania metropolitan area no later than July 16, 2012. During the Employment Term, the Executive will be entitled to payment(s)
and/or the provision of service(s) pursuant to the Company’s relocation policy in connection with the Executive’s relocation to the Philadelphia, Pennsylvania metropolitan area; provided that notwithstanding the terms of such
policy, the sum of any capital loss (taking into account transaction fees and broker’s commissions) and carrying costs experienced by the Executive associated with the sale of the Executive’s current primary residence, up to $300,000,
which are not covered by such policy, shall be reimbursed to the Executive. In addition, during the Employment Term and prior to the Executive’s relocation to the Philadelphia, Pennsylvania metropolitan area as contemplated by the first
sentence of this Section 6(d), upon presentation of substantiation and documentation as the Company may reasonably specify from time to time, the Company shall pay or reimburse the Executive for (i) the Executive’s reasonable,
roundtrip coach class commuting expenses once per week to and from the Philadelphia, Pennsylvania metropolitan area, and (ii) the Executive’s reasonable temporary housing expenses at the AVE furnished apartments in Malvern, Pennsylvania,
in each case for the foregoing clauses (i) and (ii), for up to six (6) months following the Effective Date. 

  
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 7. TERMINATION. The Executive’s employment and the Employment Term shall terminate on
the first of the following to occur: 
 (a) DISABILITY. Upon ten (10) days’ prior written notice by the Company to the
Executive of termination due to Disability. For purposes of this Agreement, “Disability” shall be defined as the inability of the Executive to have performed the Executive’s material duties hereunder due to a physical or mental
injury, infirmity or incapacity, which inability shall continue for one hundred and twenty (120) consecutive days or for one hundred eighty (180) days (including weekends and holidays) in any 365-day period as determined by the Board in
its reasonable discretion. The Executive shall cooperate in all respects with the Company if a question arises as to whether the Executive has become disabled (including, without limitation, submitting to reasonable examinations by one or more
medical doctors and other health care specialists selected by the Company and authorizing such medical doctors and other health care specialists to discuss the Executive’s condition with the Company). 

(b) DEATH. Automatically upon the date of death of the Executive. 

(c) CAUSE. Immediately upon written notice by the Company to the Executive of a termination for Cause. “Cause” shall
mean the Executive’s (i) continued failure to follow the lawful directives of the Board or any executive to whom the Executive reports after written notice from the Board or such executive and a period of no less than thirty (30) days
to cure such failure; (ii) willful misconduct or gross negligence in the performance of the Executive’s duties; (iii) conviction of, or pleading of guilty or nolo contendere to, a felony; (iv) material violation of a
material Company policy that is not cured within fifteen (15) days of written notice from the Board; (v) performance of any material act of theft, embezzlement, fraud or misappropriation of or in respect of the Company’s property;
(vi) continued failure to cooperate in any audit or investigation of financial or business practices of the Company after written request for cooperation from the Board and a period of no less than ten (10) days to cure such failure; or
(vii) breach of any of the restrictive covenants set forth in Section 11 hereof or in any other written agreement between the Executive and the Company and/or its affiliates that causes material and demonstrable harm to the Company
and that is not cured within fifteen (15) days of written notice from the Board (a “Material Covenant Violation”). 

(d) WITHOUT CAUSE. Immediately upon written notice by the Company to the Executive of an involuntary termination without Cause (other
than for death or Disability). 
 (e) GOOD REASON. Upon written notice by the Executive to the Company of a termination for Good
Reason. “Good Reason” shall mean the occurrence of any of the following events, without the express written consent of the Executive, unless such events are fully corrected in all material respects by the Company or Parent (as
applicable) within thirty (30) days following written notification by the Executive to the Company of the occurrence of one of the reasons set forth below: (i) the material diminution in the Executive’s position, duties or authorities
or assignment of duties materially inconsistent with the Executive’s position, including the Executive being required to report to someone other than the Company’s Chief Executive Officer, (ii) the Executive’s relocation of the
Executive’s primary work location outside of the Philadelphia, Pennsylvania metropolitan area; (iii) a reduction in Base Salary or Target Bonus; (iv) the Company giving notice of non-extension of this Agreement; or (v) the

  
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Company’s material breach of this Agreement. The Executive shall provide the Company with a written notice detailing the specific circumstances alleged to constitute Good Reason within
ninety (90) days the occurrence of such circumstances, and actually terminate employment within thirty (30) days following the expiration of the Company’s thirty (30)-day correction period described above. Otherwise, any claim of such
circumstances as “Good Reason” shall be deemed irrevocably waived by the Executive. 
 (f) WITHOUT GOOD REASON. Upon ninety
(90) days’ prior written notice by the Executive to the Company of the Executive’s voluntary termination of employment without Good Reason (which the Company may, in its sole discretion, make effective earlier than any notice date).

 (g) EXPIRATION OF EMPLOYMENT TERM; NON-EXTENSION OF AGREEMENT. Upon the expiration of the Employment Term due to a non-extension
of the Agreement by the Company or the Executive pursuant to the provisions of Section 2 hereof (in the case of a non-extension by the Company, without the Executive having terminated for Good Reason in respect of such non-extension).

 8. CONSEQUENCES OF TERMINATION. 

(a) DEATH. In the event that the Executive’s employment and the Employment Term ends on account of the Executive’s death, the
Executive or the Executive’s estate, as the case may be, shall be entitled to the following (with the amounts due under Sections 8(a)(i) through 8(a)(v) hereof to be paid, unless otherwise provided below, within sixty
(60) days following termination of employment, or such earlier date as may be required by applicable law): 
 (i) any unpaid Base
Salary through the date of termination; 
 (ii) any Annual Bonus earned but unpaid with respect to the calendar year ending on or preceding
the date of termination; 
 (iii) an amount equal to the pro-rata portion of the Executive’s Target Bonus for the calendar year of
termination (determined by multiplying the Target Bonus for the year of termination by a fraction, the numerator of which is the number of days during the calendar year of termination that the Executive is employed by the Company and the denominator
of which is 365); provided that to the extent that the payment of such amount constitutes “nonqualified deferred compensation” for purposes of “Code Section 409A” (as defined in Section 25 hereof), such
payment shall be made on the sixtieth (60th) day following such termination; 

(iv) reimbursement for any unreimbursed business expenses incurred through the date of termination; 

(v) payment in respect of any accrued but unused vacation time in accordance with Company policy; and 

(vi) all other payments, benefits or fringe benefits to which the Executive shall be entitled under the terms of any applicable compensation
arrangement or benefit, equity or fringe benefit plan or program or grant or this Agreement (collectively, Sections 8(a)(i) through 8(a)(vi) hereof shall be hereafter referred to as the “Accrued Benefits”). 

  
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 (b) DISABILITY. In the event that the Executive’s employment and/or Employment Term
ends on account of the Executive’s Disability, the Company shall pay or provide the Executive with the Accrued Benefits. 
 (c)
TERMINATION FOR CAUSE OR WITHOUT GOOD REASON OR AS A RESULT OF EXECUTIVE NON-EXTENSION OF THIS AGREEMENT. If the Executive’s employment is terminated (x) by the Company for Cause or (y) by the Executive without Good Reason, the
Company shall pay to the Executive the Accrued Benefits (other than the benefits described in Sections 8(a)(ii) and 8(a)(iii) hereof). 

(d) TERMINATION WITHOUT CAUSE OR FOR GOOD REASON. If the Executive’s employment by the Company is terminated (x) by the
Company other than for Cause pursuant to Section 7(c) hereof, or (y) by the Executive for Good Reason, the Company shall pay or provide the Executive with the following, subject to the provisions of Section 25 hereof:

 (i) the Accrued Benefits; 

(ii) subject to the Executive’s not engaging in a Material Covenant Violation or a material breach of Section 11 hereof that
is not cured within fifteen (15) days of written notice from the Board (a “Material Cooperation Violation”), the Executive shall be entitled to an amount equal to one and one-half (1.5) multiplied by the sum of the
Executive’s Base Salary and Target Bonus for the year of termination (the “Severance Amount”), paid in equal monthly installments for a period of eighteen (18) months following such termination; provided that to the
extent that the payment of any amount constitutes “nonqualified deferred compensation” for purposes of Code Section 409A, any such payment scheduled to occur during the first sixty (60) days following the termination of
employment shall not be paid until the sixtieth (60th) day following such termination and shall include payment of any amount that was otherwise scheduled to be paid prior thereto; and 

(iii) subject to (A) the Executive’s timely election of continuation coverage under the Consolidated Omnibus Budget Reconciliation
Act of 1985, as amended (“COBRA”). (B) the Executive’s continued copayment of premiums at the same level and cost to the Executive as if the Executive were an employee of the Company (excluding, for purposes of calculating
cost, an employee’s ability to pay premiums with pre-tax dollars), and (C) the Executive’s not engaging in a Material Covenant Violation or a Material Cooperation Violation, continued participation in the Company’s group health
plan (to the extent permitted under applicable law) which covers the Executive (and his eligible dependents) for a period of eighteen (18) months following such termination, provided that if the Company’s group health plan is
self-insured, the Company will report to the appropriate tax authorities taxable income to the Executive equal to the portion of the deemed cost of such participation (based on applicable COBRA rates) not paid by the Executive; and provided,
further, that in the event that the Executive obtains other employment that offers group health benefits, such continuation of coverage by the Company under this Section 8(d)(iii) shall immediately cease. 

  
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 Payments and benefits provided in this Section 8(d) shall be in lieu of any termination or severance
payments or benefits for which the Executive may be eligible under any of the plans, policies or programs of the Company or under the Worker Adjustment Retraining Notification Act of 1988 or any similar state statute or regulation. 

(e) CHANGE IN CONTROL. 

(i) This Section 8(e) shall apply if the Executive’s employment by the Company is terminated (x) by the Company other
than for Cause pursuant to Section 7(c) hereof, or (y) by the Executive for Good Reason, in either case, during the two (2)-year period commencing upon a Change in Control. Subject to the Executive’s not engaging in a Material
Covenant Violation or a Material Cooperation Violation, upon a termination described in the preceding sentence, the Executive shall receive the benefits set forth in Section 8(d) hereof, except that in lieu of receiving the Severance
Amount in installments as contemplated under Section 8(d)(ii) hereof, the Executive shall receive a lump sum payment equal to the Severance Amount on the date of such termination; provided that to the extent that the payment of
the applicable amount constitutes “nonqualified deferred compensation” for purposes of Code Section 409A, such payment shall be made on the sixtieth (60th) day following such
termination. 
 (ii) For purposes of this Agreement, the term “Change in Control” shall mean the consummation of the first
transaction following the Effective Date, whether in a single transaction or in a series of related transactions, in which any individual, entity or group (within the meaning of Section 13(d)(3) or 14(d)(2) of the Securities Exchange Act of
1934, as amended) (a “Group”), other than Bain Capital Partners, any private equity fund managed by it, or any Group which includes Bain Capital Partners or any private equity fund managed by it, (A) acquires (whether by
merger, consolidation, or transfer or issuance of equity interests or otherwise) equity interests of the Company (or any surviving or resulting entity) representing more than fifty percent (50%) of the outstanding voting securities or economic
value of the Company (or any surviving or resulting entity), or (B) acquires assets constituting all or substantially all (more than eighty percent (80%)) of the assets of the Company and its subsidiaries (as determined on a consolidated
basis). 
 (f) CODE SECTION 280G. 

(i) Change in Control Prior to Publicly Traded Equity of Company. So long as the Company is described in
Section 280G(b)(5)(A)(ii)(I) of the Code, in the event that any payment that is either received by the Executive or paid by the Company on the Executive’s behalf or any property, or any other benefit provided to the Executive under the
Agreement or under any other plan, arrangement or agreement with the Company or any other person whose payments or benefits are treated as contingent on a change of ownership or control of the Company (or in the ownership of a substantial portion of
the assets of the Company) or any person affiliated with the Company or such person (but only if such payment or other benefit is in connection with the Executive’s employment by the Company) (collectively the “Company
Payments”), would be subject to the tax imposed by Section 4999 of the Code (and any similar tax that may hereafter be imposed by any taxing authority) (the “Excise Tax”), the Company shall, with respect to such
Company Payments, use its reasonable best efforts to obtain a vote satisfying the requirements of Section 280G(b)(5) of the Code, such that no portion of the 

  
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Company Payments will be subject to such Excise Tax. In the event that a vote satisfying the requirements of Section 280G(b)(5) of the Code is not obtained for any reason, then the Executive
will be entitled to receive a portion of the Company Payments having a value equal to $1 less than three (3) times the Executive’s “base amount” (as such term is defined in Section 280G(b)(3)(A) of the Code) (the
“Safe Harbor Amount”). Any reduction of the Company Payments pursuant to the foregoing shall occur in the following order: (A) any cash severance payable by reference to the Executive’s Base Salary or Annual Bonus;
(B) any other cash amount payable to the Executive; (C) any benefit valued as a “parachute payment;” and (D) acceleration of vesting of any equity award. 

(ii) Change in Control Upon or Following Publicly Traded Equity of Company. In the event that Company Payments become payable to the
Executive during any period in which the Company is not an entity described in Section 280G(b)(5)(A)(ii)(I) of the Code, if the Company Payments will be subject to the Excise Tax, then the Executive will be entitled to receive either
(A) the full amount of the Company Payments, or (B) a portion of the Company Payments having a value equal to the Safe Harbor Amount, whichever of clauses (A) and (B), after taking into account applicable federal, state, and local
income taxes and the Excise Tax, results in the receipt by the Executive on an after-tax basis, of the greatest portion of the Company Payments. Any reduction of the Company Payments pursuant to the foregoing shall occur in the same manner as
provided in the last sentence of Section 8(f)(i) hereof. 
 (iii) Accountants. Any determination required under this
Section 8(f) shall be made in writing by the independent public accountants of the Company, whose determination shall be conclusive and binding for all purposes upon the Company and the Executive. For purposes of making any calculation
required by this Section 8(f), such accountants may make reasonable assumptions and approximations concerning applicable taxes and may rely on reasonable, good-faith interpretations concerning the application of Sections 280G and 4999 of
the Code. 
 9. OTHER OBLIGATIONS. Upon any termination of the Executive’s employment with the Company, the Executive shall
promptly resign from any other position as an officer, director or fiduciary of the Company, Parent and any Affiliate. 
 10. RELEASE; NO
MITIGATION; NO SET-OFF. Any and all amounts payable and benefits or additional rights provided pursuant to this Agreement beyond the Accrued Benefits (other than the amount described in Section 8(a)(iii) hereof) shall only be payable
if the Executive delivers to the Company and does not revoke a general release of claims in favor of the Company in substantially the form of Exhibit A attached hereto. Such release shall be executed and delivered (and no longer subject to
revocation, if applicable) within sixty (60) days following termination. In no event shall the Executive be obligated to seek other employment or take any other action by way of mitigation of the amounts payable to the Executive under any of
the provisions of this Agreement, nor shall the amount of any payment hereunder be reduced by any compensation earned by the Executive as a result of employment by a subsequent employer (except as provided in Section 8(d)(iii) hereof).
The Company’s obligations to pay the Executive amounts hereunder shall not be subject to set-off, counterclaim or recoupment of amounts owed by the Executive to the Company or any of its affiliates. 

  
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 11. RESTRICTIVE COVENANTS. 

(a) CONFIDENTIALITY. During the course of the Executive’s employment with the Company, the Executive will learn confidential
information regarding the Company. The Executive agrees that the Executive shall not, directly or indirectly, use, make available, sell, disclose or otherwise communicate to any person, other than in the course of the Executive’s assigned
duties and for the benefit of the Company, either during the period of the Executive’s employment or at any time thereafter, any business and technical information or trade secrets, nonpublic, proprietary or confidential information, knowledge
or data relating to the Company or any of its Affiliates, or received from third parties subject to a duty on the Company’s and its Affiliates’ part to maintain the confidentiality of such information and to use it only for certain limited
purposes, in each case which shall have been obtained by the Executive during the Executive’s employment by the Company. The foregoing shall not apply to information that (i) was known to the public prior to its disclosure to the
Executive; (ii) becomes generally known to the public subsequent to disclosure to the Executive through no wrongful act of the Executive or any representative of the Executive; or (iii) the Executive is required to disclose by applicable
law, regulation or legal process (provided that the Executive provides the Company with prior notice of the contemplated disclosure and cooperates with the Company at its expense in seeking a protective order or other appropriate protection
of such information). The terms and conditions of this Agreement shall remain strictly confidential, and the Executive hereby agrees not to disclose the terms and conditions hereof to any person or entity, other than immediate family members, legal
advisors or personal tax or financial advisors, or prospective future employers solely for the purpose of disclosing the limitations on the Executive’s conduct imposed by the provisions of this Section 11 who, in each case, shall be
instructed by the Executive to keep such information confidential. 
 (b) NONCOMPETITION. The Executive acknowledges that the
Executive performs services of a unique nature for the Company that are irreplaceable, and that the Executive’s performance of such services to a competing business will result in irreparable harm to the Company. Accordingly, during the
Executive’s employment hereunder and for a period of one (1) year thereafter, the Executive agrees that the Executive will not, directly or indirectly, own, manage, operate, control, be employed by (whether as an employee, consultant,
independent contractor or otherwise, and whether or not for compensation) or render services to any person, firm, corporation or other entity, in whatever form, engaged in competition with any material business of the Company or any Affiliate or in
any other material business in which the Company or any Affiliate has taken material steps and has material plans, on or prior to the date or termination, to be engaged in on or after such date, in any locale of any country in which the Company or
such Affiliate conducts business. Notwithstanding the foregoing, nothing herein shall prohibit the Executive from being a passive owner of not more than one percent (1%) of the equity securities of a publicly traded corporation engaged in a
business that is in competition with the Company or any of its affiliates, so long as the Executive has no active participation in the business of such corporation. 

(c) NONSOLICITATION; NONINTERFERENCE. During the Executive’s employment with the Company and for a period of one (1) year
thereafter, the Executive agrees that the Executive shall not, except in the furtherance of the Executive’s duties hereunder, directly or indirectly, individually or on behalf of any other person, firm, corporation or other

  
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entity, (i) solicit, aid or induce any customer of the Company or an Affiliate to purchase goods or services then sold by the Company or any Affiliate from another person, firm, corporation
or other entity or assist or aid any other persons or entity in identifying or soliciting any such customer, (ii) solicit, aid or induce any employee, representative or agent of the Company or any Affiliate to leave such employment or retention
or, in the case of employees, to accept employment with or render services to or with any other person, firm, corporation or other entity unaffiliated with the Company or any Affiliate, or hire or retain any such employee, or take any action to
materially assist or aid any other person, firm, corporation or other entity in identifying, hiring or soliciting any such employee, or (iii) interfere, or aid or induce any other person or entity in interfering, with the relationship between
the Company or any Affiliate and any of their respective vendors, joint venturers or licensors. An employee, representative or agent shall be deemed covered by this Section 11(c) while so employed or retained and for a period of six
(6) months thereafter. Notwithstanding the foregoing, the provisions of this Section 11(c) shall not be violated by general advertising or solicitation not specifically targeted at Company or Affiliate-related individuals or
entities. 
 (d) INVENTIONS. (i) The Executive acknowledges and agrees that all ideas, methods, inventions, discoveries,
improvements, work products, developments or works of authorship (“Inventions”), whether patentable or unpatentable, (A) that relate to the Executive’s work with the Company, made or conceived by the Executive, solely or
jointly with others, during the Employment Term, or (B) suggested by any work that the Executive performs in connection with the Company, either while performing the Executive’s duties with the Company or on the Executive’s own time,
shall belong exclusively to the Company (or its designee), whether or not patent applications are filed thereon. The Executive will keep full and complete written records (the “Records”), in the manner prescribed by the Company, of
all Inventions, and will promptly disclose all Inventions completely and in writing to the Company. The Records shall be the sole and exclusive property of the Company, and the Executive will surrender them upon the termination of the Employment
Term, or upon the Company’s request. The Executive will assign to the Company the Inventions and all patents that may issue thereon in any and all countries, whether during or subsequent to the Employment Term, together with the right to file,
in the Executive’s name or in the name of the Company (or its designee), applications for patents and equivalent rights (the “Applications”). The Executive will, at any time during and subsequent to the Employment Term, make
such applications, sign such papers, take all rightful oaths, and perform all acts as may be requested from time to time by the Company with respect to the Inventions. The Executive will also execute assignments to the Company (or its designee) of
the Applications, and give the Company and its attorneys all reasonable assistance (including the giving of testimony) to obtain the Inventions for the Company’s benefit, all without additional compensation to the Executive from the Company.

 (ii) In addition, the Inventions will be deemed Work for Hire, as such term is defined under the copyright laws of the United States, on
behalf of the Company and the Executive agrees that the Company will be the sole owner of the Inventions, and all underlying rights therein, in all media now known or hereinafter devised, throughout the universe and in perpetuity without any further
obligations to the Executive. If the Inventions, or any portion thereof, are deemed not to be Work for Hire, the Executive hereby irrevocably conveys, transfers and assigns to the Company, all rights, in all media now known or hereinafter devised,
throughout the universe and in perpetuity, in and to the Inventions, including, without limitation, 

  
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all of the Executive’s right, title and interest in the copyrights (and all renewals, revivals and extensions thereof) to the Inventions, including, without limitation, all rights of any
kind or any nature now or hereafter recognized, including, without limitation, the unrestricted right to make modifications, adaptations and revisions to the Inventions, to exploit and allow others to exploit the Inventions and all rights to sue at
law or in equity for any infringement, or other unauthorized use or conduct in derogation of the Inventions, known or unknown, prior to the date hereof, including, without limitation, the right to receive all proceeds and damages therefrom. In
addition, the Executive hereby waives any so-called “moral rights” with respect to the Inventions. To the extent that the Executive has any rights in the results and proceeds of the Inventions that cannot be assigned in the manner
described herein, the Executive agrees to unconditionally waive the enforcement of such rights. The Executive hereby waives any and all currently existing and future monetary rights in and to the Inventions and all patents that may issue thereon,
including, without limitation, any rights that would otherwise accrue to the Executive’s benefit by virtue of the Executive being an employee of or other service provider to the Company. 

(e) RETURN OF COMPANY PROPERTY. On the date of the Executive’s termination of employment with the Company for any reason (or at
any time prior thereto at the Company’s request), the Executive shall return all property belonging to the Company or its Affiliates (including, but not limited to, any Company-provided laptops, computers, cell phones, wireless electronic mail
devices or other equipment, or documents and property belonging to the Company). The Executive may retain the Executive’s rolodex and similar address books provided that such items only include contact information. 

(f) REASONABLENESS OF COVENANTS. In signing this Agreement, the Executive gives the Company assurance that the Executive has carefully
read and considered all of the terms and conditions of this Agreement, including the restraints imposed under this Section 11. The Executive agrees that these restraints are necessary for the reasonable and proper protection of the
Company and its Affiliates and their trade secrets and confidential information and that each and every one of the restraints is reasonable in respect to subject matter, length of time and geographic area, and that these restraints, individually or
in the aggregate, will not prevent the Executive from obtaining other suitable employment during the period in which the Executive is bound by the restraints. The Executive acknowledges that each of these covenants has a unique, very substantial and
immeasurable value to the Company and its Affiliates and that the Executive has sufficient assets and skills to provide a livelihood while such covenants remain in force. The Executive further covenants that the Executive will not challenge the
reasonableness or enforceability of any of the covenants set forth in this Section 11, other than in response to an attempt by the Company or an Affiliate to enforce such covenants against the Executive. It is also agreed that the Affiliates
will have the right to enforce all of the Executive’s obligations to such Affiliates under this Agreement, including without limitation pursuant to this Section 11. 

(g) REFORMATION. If it is determined by a court of competent jurisdiction in any state that any restriction in this
Section 11 is excessive in duration or scope or is unreasonable or unenforceable under applicable law, it is the intention of the parties that such restriction may be modified or amended by the court to render it enforceable to the
maximum extent permitted by the laws of that state. 

  
 11 

 (h) TOLLING. In the event of any violation of the provisions of this
Section 11, the Executive acknowledges and agrees that the post-termination restrictions contained in this Section 11 shall be extended by a period of time equal to the period of such violation, it being the intention of the
parties hereto that the running of the applicable post-termination restriction period shall be tolled during any period of such violation. 

(i) SURVIVAL OF PROVISIONS. The obligations contained in Sections 11 and 12 hereof shall survive the termination or
expiration of the Employment Term and the Executive’s employment with the Company and shall be fully enforceable thereafter. 
 12.
COOPERATION. Upon the receipt of reasonable notice from the Company (including through outside counsel), the Executive agrees that while employed by the Company and thereafter (to the extent it does not materially interfere with the
Executive’s employment or other business activities after employment by the Company), the Executive will respond and provide information with regard to matters in which the Executive has knowledge as a result of the Executive’s employment
with the Company, and will provide reasonable assistance to the Company, the Affiliates and their respective representatives in defense of all claims that may be made against the Company or the Affiliates, and will assist the Company and the
Affiliates in the prosecution of all claims that may be made by the Company or the Affiliates, to the extent that such claims may relate to the period of the Executive’s employment with the Company. The Executive also agrees to promptly inform
the Company (to the extent that the Executive is legally permitted to do so) if the Executive is asked to assist in any investigation of the Company or the Affiliates (or their actions), regardless of whether a lawsuit or other proceeding has then
been filed against the Company or Affiliates with respect to such investigation, and shall not do so unless legally required. Upon presentation of appropriate documentation, the Company shall pay or reimburse the Executive for all reasonable
out-of-pocket travel, duplicating, telephonic, counsel and other expenses incurred by the Executive in complying with this Section 12. 

13. EQUITABLE RELIEF AND OTHER REMEDIES. The Executive acknowledges and agrees that the Company’s remedies at law for a breach or
threatened breach of any of the provisions of Section 11 hereof or Section 12 hereof would be inadequate and, in recognition of this fact, the Executive agrees that, in the event of such a breach or threatened breach, in
addition to any remedies at law. the Company shall be entitled to obtain equitable relief in the form of specific performance, a temporary restraining order, a temporary or permanent injunction or any other equitable remedy which may then be
available. In the event of a Material Covenant Violation or a Material Cooperation Violation by the Executive, any severance being paid to the Executive pursuant to this Agreement or otherwise shall immediately cease. 

14. NO ASSIGNMENTS. This Agreement is personal to each of the parties hereto. Except as provided in this Section 14 hereof,
no party may assign or delegate any rights or obligations hereunder without first obtaining the written consent of the other party hereto. The Company shall assign this Agreement to any successor to all or substantially all of the business and/or
assets of the Company or Parent, provided that the Company shall require such successor to expressly assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no
such succession had taken place, and provided that the Company agrees to perform such obligations if such successor fails to do 

  
 12 

 
so in a timely manner. As used in this Agreement, “Company” shall mean the Company and any successor to all or substantially all of its business and/or assets, which assumes and
agrees to perform the duties and obligations of the Company under this Agreement by operation of law or otherwise. 
 15. NOTICES.
For purposes of this Agreement, notices and all other communications provided for in this Agreement shall be in writing and shall be deemed to have been duly given (a) on the date of delivery, if delivered by hand, (b) on the date of
transmission, if delivered by confirmed facsimile or electronic mail, (c) on the first business day following the date of deposit, if delivered by guaranteed overnight delivery service, or (d) on the fourth business day following the date
delivered or mailed by United States registered or certified mail, return receipt requested, postage prepaid, addressed as follows: 
 If to
the Executive: 
 At the address (or to the facsimile number) shown 

in the books and records of the Company. 

If to the Company: 
 Styron US
Holding, Inc. 
 c/o Bain Capital Partners, LLC 

590 Madison Avenue, 42nd Floor 

New York, NY 10022 
 Facsimile:
(212) 421-2225 
 Attention: Stephen M. Zide 

or to such other address as either party may have furnished to the other in writing in accordance herewith, except that notices of change of address shall be
effective only upon receipt. 
 16. SECTION HEADINGS; INCONSISTENCY. The section headings used in this Agreement are included solely
for convenience and shall not affect, or be used in connection with, the interpretation of this Agreement. In the event of any inconsistency between the terms of this Agreement (including the Exhibits hereto) and any form, award, plan or policy of
the Company, the terms of this Agreement shall govern and control. 
 17. SEVERABILITY. The provisions of this Agreement shall be
deemed severable and the invalidity or unenforceability of any provision shall not affect the validity or enforceability of the other provisions hereof. 

18. COUNTERPARTS. This Agreement may be executed in several counterparts, each of which shall be deemed to be an original but all of
which together will constitute one and the same instrument. 
 19. INDEMNIFICATION. The Company hereby agrees to indemnify the
Executive and hold the Executive harmless to the fullest extent allowable under applicable law against and in respect of any and all actions, suits, proceedings, claims, demands, judgments, costs, expenses

  
 13 

 
(including attorney’s fees, and the advancement of such fees subject to any legally required repayment undertaking), losses, and damages resulting from the Executive’s performance of
the Executive’s duties and obligations with the Company. This obligation shall survive the termination of the Executive’s employment with the Company. 

20. LIABILITY INSURANCE. The Company shall cover the Executive under directors’ and officers’ liability insurance both during
and, while potential liability exists, after the Employment Term in the same amount and to the same extent as the Company covers its other officers and directors. 

21. GOVERNING LAW. This Agreement, the rights and obligations of the parties hereto, and any claims or disputes relating thereto, shall
be governed by and construed in accordance with the laws of the State of Delaware (but not including any choice of law rule thereof that would cause the laws of another jurisdiction to apply). 

22. DISPUTE RESOLUTION. Each of the parties agrees that any dispute between the parties shall be resolved only in the courts of the
State of Delaware or the United States District Court for the District of Delaware and the appellate courts having jurisdiction of appeals in such courts. In that context, and without limiting the generality of the foregoing, each of the parties
hereto irrevocably and unconditionally (a) submits in any proceeding relating to this Agreement or the Executive’s employment by the Company or any affiliate, or for the recognition and enforcement of any judgment in respect thereof (a
“Proceeding”), to the exclusive jurisdiction of the courts of the State of Delaware, the court of the United States of America for the District of Delaware, and appellate courts having jurisdiction of appeals from any of the
foregoing, and agrees that all claims in respect of any such Proceeding shall be heard and determined in such Delaware State court or, to the extent permitted by law, in such federal court, (b) consents that any such Proceeding may and shall be
brought in such courts and waives any objection that the Executive or the Company may now or thereafter have to the venue or jurisdiction of any such Proceeding in any such court or that such Proceeding was brought in an inconvenient court and
agrees not to plead or claim the same, (c) WAIVES ALL RIGHT TO TRIAL BY JURY IN ANY PROCEEDING (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE EXECUTIVE’S EMPLOYMENT BY THE COMPANY OR ANY
AFFILIATE OF THE COMPANY, OR THE EXECUTIVE’S OR THE COMPANY’S PERFORMANCE UNDER, OR THE ENFORCEMENT OF, THIS AGREEMENT, (d) agrees that service of process in any such Proceeding may be effected by mailing a copy of such process by
registered or certified mail (or any substantially similar form of mail), postage prepaid, to such party at the Executive’s or the Company’s address as provided in Section 15 hereof, and (e) agrees that nothing in this
Agreement shall affect the right to effect service of process in any other manner permitted by the laws of the State of Delaware. Each party shall be responsible for its own legal fess incurred in connection with any dispute hereunder. 

23. MISCELLANEOUS. No provision of this Agreement may be modified, waived or discharged unless such waiver, modification or discharge
is agreed to in writing and signed by the Executive and such officer or director as may be designated by the Board. No waiver by either party hereto at any time of any breach by the other party hereto of, or compliance with, any condition or
provision of this Agreement to be performed by such other party shall be 

  
 14 

 
deemed a waiver of similar or dissimilar provisions or conditions at the same or at any prior or subsequent time. This Agreement together with all exhibits hereto sets forth the entire agreement
of the parties hereto in respect of the subject matter contained herein and supersedes any and all prior agreements or understandings between the Executive and the Company with respect to the subject matter hereof, whether written or oral. No
agreements or representations, oral or otherwise, express or implied, with respect to the subject matter hereof have been made by either party which are not expressly set forth in this Agreement. 

24. REPRESENTATIONS; ACTIONS BY PRIOR EMPLOYERS. The Executive represents and warrants to the Company that (a) the Executive has
used the Executive’s best efforts to provide the Company with (i) each agreement with a predecessor employer which may have any bearing on the Executive’s legal right to enter into this Agreement and to perform all of the obligations
on the Executive’s part to be performed hereunder in accordance with its terms, or (ii) a summary of the applicable provisions of each such agreement which the Executive may not provide to the Company due to an existing confidentiality
obligation, and (b) other than the agreements referenced in the preceding clause (a), the Executive is not a party to any agreement or understanding, whether written or oral, and is not subject to any restriction (including, without limitation,
any non-competition restriction from a prior employer), which, in either case, could prevent the Executive from entering into this Agreement or performing all of the Executive’s duties and obligations hereunder. The Executive understands that
the foregoing representations are a material inducement to the Company entering into this Agreement, and to the extent that either of such representations is untrue in any material respect at any time or for any reason, this Agreement shall be
voidable by the Company such that the parties hereunder shall be relieved of all of their respective duties and obligations hereunder; provided that any termination of the Executive’s employment resulting from the Company exercising its
rights pursuant to this sentence shall be treated as a termination of employment by the Executive without Good Reason. If any prior employer of the Executive, or any affiliate of any such prior employer, challenges the Executive’s right to
enter into this Agreement and to perform all of the Executive’s obligations hereunder (whether by action against the Executive, the Company, Parent and/or an Affiliate), the Company, Parent (on behalf of itself and all Affiliates) and the
Executive each agree to use their reasonable best efforts to defend against such challenge. 
 25. TAX MATTERS. 

(a) WITHHOLDING. The Company may withhold from any and all amounts payable under this Agreement or otherwise such federal, state and
local taxes as may be required to be withheld pursuant to any applicable law or regulation. 
 (b) SECTION 409A COMPLIANCE. 

(i) The intent of the parties is that payments and benefits under this Agreement comply with Section 409A of the Code and the regulations
and guidance promulgated thereunder (collectively “Code Section 409A”) and, accordingly, to the maximum extent permitted, this Agreement shall be interpreted to be in compliance therewith. To the extent that any provision
hereof is modified in order to comply with Code Section 409A, such modification shall be made in good faith and shall, to the maximum extent reasonably possible, 

  
 15 

 
maintain the original intent and economic benefit to the Executive and the Company of the applicable provision without violating the provisions of Code Section 409A. Any such modification
shall require the written consent of the Executive. In no event whatsoever shall the Company be liable for any additional tax, interest or penalty that may be imposed on the Executive by Code Section 409A or damages for failing to comply with
Code Section 409A; provided that the Company makes any modification reasonably requested by the Executive in accordance with the second sentence of this Section 25(b)(i). 

(ii) A termination of employment shall not be deemed to have occurred for purposes of any provision of this Agreement providing for the
payment of any amounts or benefits upon or following a termination of employment unless such termination is also a “separation from service” within the meaning of Code Section 409A and, for purposes of any such provision of this
Agreement, references to a “termination,” “termination of employment” or like terms shall mean “separation from service.” If the Executive is deemed on the date of termination to be a “specified employee”
within the meaning of that term under Code Section 409A(a)(2)(B), then with regard to any payment or the provision of any benefit that is considered “nonqualified deferred compensation” under Code Section 409A payable on account
of a “separation from service,” such payment or benefit shall be made or provided at the date which is the earlier of (A) the expiration of the six (6)-month period measured from the date of such “separation from service” of
the Executive, and (B) the date of the Executive’s death, to the extent required under Code Section 409A. Upon the expiration of the foregoing delay period, all payments and benefits delayed pursuant to this
Section 25(b)(ii) (whether they would have otherwise been payable in a single sum or in installments in the absence of such delay) shall be paid or reimbursed to the Executive in a lump sum and all remaining payments and benefits due
under this Agreement shall be paid or provided in accordance with the normal payment dates specified for them herein. 
 (iii) To the extent
that reimbursements or other in-kind benefits under this Agreement constitute “nonqualified deferred compensation” for purposes of Code Section 409A, (A) all expenses or other reimbursements hereunder shall be made on or prior to
the last day of the taxable year following the taxable year in which such expenses were incurred by the Executive, (B) any right to reimbursement or in-kind benefits shall not be subject to liquidation or exchange for another benefit, and
(C) no such reimbursement, expenses eligible for reimbursement, or in-kind benefits provided in any taxable year shall in any way affect the expenses eligible for reimbursement, or in-kind benefits to be provided, in any other taxable year.

 (iv) For purposes of Code Section 409A, the Executive’s right to receive installment payments pursuant to this Agreement shall
be treated as a right to receive a series of separate and distinct payments. Whenever a payment under this Agreement specifies a payment period with reference to a number of days, the actual date of payment within the specified period shall be
within the sole discretion of the Company. 
 26. FURTHER ASSURANCES; PARENT GUARANTEE. The parties hereto shall cooperate with each
other and do, or procure the doing of, all acts and things, and execute, or procure the execution of, all documents, as may reasonably be required to give full effect to this Agreement. Parent hereby guarantees the performance of the obligations of
the Company to 

  
 16 

 
pay all cash amounts due to the Executive pursuant to this Agreement. In the event that the Company is unable or unwilling to pay any such amounts when due, upon notice of such non-payment
received by Parent from the Executive, Parent shall immediately pay such amounts, or take any and all actions necessary to cause one or more Affiliates to pay such amounts, on behalf of the Company. 

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK] 

  
 17 

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

					
	STYRON US HOLDING, INC.
		
	By:	 	

		
	Name:	 	 Chris Pappas

		
	Title:	 	 CEO

	
	BAIN CAPITAL EVEREST MANAGER HOLDING SCA
		 	By:	 	BAIN CAPITAL EVEREST MANAGER, its general partner
			
		 	By:	 	

			
		 	Name:	 	 Mark Verdi

			
		 	Title:	 	 Authorized Officer

	
	EXECUTIVE
	
	 

	John A. Feenan

 Employment Agreement Signature Page 

 EXHIBIT A 

GENERAL RELEASE 
 I,
John A. Feenan, in consideration of and subject to the performance by Styron US Holding, Inc. (together with its subsidiaries, the “Company”), of its obligations under the Employment Agreement, dated as of December
    , 2011 (the “Agreement”), do hereby release and forever discharge as of the date hereof the Company and its respective “Affiliates” (as defined in the Agreement) and all present, former and future
directors, officers, employees, successors and assigns of the Company and its Affiliates and direct or indirect owners (collectively, the “Released Parties”) to the extent provided below. The Released Parties are intended
third-party beneficiaries of this General Release, and this General Release may be enforced by each of them in accordance with the terms hereof in respect of the rights granted to such Released Parties hereunder. Terms used herein but not otherwise
defined shall have the meanings given to them in the Agreement. 
 1. I understand that any payments or benefits paid or granted to me under Section 8
of the Agreement represent, in part, consideration for signing this General Release and are not salary, wages or benefits to which I was already entitled. I understand and agree that I will not receive certain of the payments and benefits specified
in Section 8 of the Agreement unless I execute this General Release and do not revoke this General Release within the time period permitted hereafter. Such payments and benefits will not be considered compensation for purposes of any employee
benefit plan, program, policy or arrangement maintained or hereafter established by the Company or its affiliates. 
 2. Except as provided in paragraphs 4
and 5 below and except for the provisions of the Agreement which expressly survive the termination of my employment with the Company, I knowingly and voluntarily (for myself, my heirs, executors, administrators and assigns) release and forever
discharge the Company and the other Released Parties from any and all claims, suits, controversies, actions, causes of action, cross-claims, counter-claims, demands, debts, compensatory damages, liquidated damages, punitive or exemplary damages,
other damages, claims for costs and attorneys’ fees, or liabilities of any nature whatsoever in law and in equity, both past and present (through the date this General Release becomes effective and enforceable) and whether known or unknown,
suspected, or claimed against the Company or any of the Released Parties which I, my spouse, or any of my heirs, executors, administrators or assigns, may have, which arise out of or are connected with my employment with, or my separation or
termination from, the Company (including, but not limited to, any allegation, claim or violation, arising under: Title VII of the Civil Rights Act of 1964, as amended; the Civil Rights Act of 1991; the Age Discrimination in Employment Act of 1967,
as amended (including the Older Workers Benefit Protection Act); the Equal Pay Act of 1963, as amended; the Americans with Disabilities Act of 1990; the Family and Medical Leave Act of 1993; the Worker Adjustment Retraining and Notification Act; the
Employee Retirement Income Security Act of 1974; any applicable Executive Order Programs; the Fair Labor Standards Act; or their state or local counterparts; or under any other federal, state or local civil or human rights law, or under any other
local, state, or federal law, regulation or ordinance; or under any public policy, contract or tort, or under common law; or arising under any policies, practices or procedures of the Company; or any claim for wrongful discharge, breach of contract,
infliction of emotional distress, defamation; or any claim for costs, fees, or other expenses, including attorneys’ fees incurred in these matters) (all of the foregoing collectively referred to herein as the “Claims”). 

  
 A-1 

 3. I represent that I have made no assignment or transfer of any right, claim, demand, cause of action, or other
matter covered by paragraph 2 above. 
 4. I agree that this General Release does not waive or release any rights or claims that I may have which arise
after the date I execute this General Release, including, without limitation, Claims under the Age Discrimination in Employment Act of 1967. I acknowledge and agree that my separation from employment with the Company in compliance with the terms of
the Agreement shall not serve as the basis for any claim or action (including, without limitation, any claim under the Age Discrimination in Employment Act of 1967). 

5. I agree that I hereby waive all rights to sue or obtain equitable, remedial or punitive relief from any or all Released Parties of any kind whatsoever in
respect of any Claim, including, without limitation, reinstatement, back pay, front pay, and any form of injunctive relief. Notwithstanding the above, I further acknowledge that I am not waiving and am not being required to waive any right that
cannot be waived under law, including the right to file an administrative charge or participate in an administrative investigation or proceeding; provided, however, that I disclaim and waive any right to share or participate in any monetary award
resulting from the prosecution of such charge or investigation or proceeding. Additionally, I am not waiving any right to the Accrued Benefits or claims for indemnity or contribution. 

6. In signing this General Release, I acknowledge and intend that it shall be effective as a bar to each and every one of the Claims hereinabove mentioned or
implied. I expressly consent that this General Release shall be given full force and effect according to each and all of its express terms and provisions, including those relating to unknown and unsuspected Claims (notwithstanding any state or local
statute that expressly limits the effectiveness of a general release of unknown, unsuspected and unanticipated Claims), if any, as well as those relating to any other Claims hereinabove mentioned or implied. I acknowledge and agree that this waiver
is an essential and material term of this General Release and that without such waiver the Company would not have agreed to the terms of the Agreement. I further agree that in the event I should bring a Claim seeking damages against the Company, or
in the event I should seek to recover against the Company in any Claim brought by a governmental agency on my behalf, this General Release shall serve as a complete defense to such Claims to the maximum extent permitted by law. I further agree that
I am not aware of any pending claim of the type described in paragraph 2 as of the execution of this General Release. 
 7. I agree that neither this
General Release, nor the furnishing of the consideration for this General Release, shall be deemed or construed at any time to be an admission by the Company, any Released Party or myself of any improper or unlawful conduct. 

8. I agree that if I violate this General Release by suing the Company or the other Released Parties, I will pay all costs and expenses of defending against
the suit incurred by the Released Parties, including reasonable attorneys’ fees. 

  
 A-2 

 9. I agree that this General Release and the Agreement are confidential and agree not to disclose any information
regarding the terms of this General Release or the Agreement, except to my immediate family and any tax, legal or other counsel I have consulted regarding the meaning or effect hereof or as required by law, and I will instruct each of the foregoing
not to disclose the same to anyone. The Company agrees to disclose any such information only to any tax, legal or other counsel of the Company as required by law. 

10. Any non-disclosure provision in this General Release does not prohibit or restrict me (or my attorney) from responding to any inquiry about this General
Release or its underlying facts and circumstances by the Securities and Exchange Commission (SEC), the Financial Industry Regulatory Authority (FINRA), any other self-regulatory organization or any governmental entity. 

11. I hereby acknowledge that Sections 8, 10, 11, 12, 13, 15, 17, 19, 20, 21, 22, 25 and 26 of the Agreement shall survive my execution of this General
Release. 
 12. I represent that I am not aware of any claim by me other than the claims that are released by this General Release. I acknowledge that I may
hereafter discover claims or facts in addition to or different than those which I now know or believe to exist with respect to the subject matter of the release set forth in paragraph 2 above and which, if known or suspected at the time of entering
into this General Release, may have materially affected this General Release and my decision to enter into it. 
 13. Notwithstanding anything in this
General Release to the contrary, this General Release shall not relinquish, diminish, or in any way affect any rights or claims arising out of any breach by the Company or by any Released Party of the Agreement after the date hereof. 

14. Whenever possible, each provision of this General Release shall be interpreted in, such manner as to be effective and valid under applicable law, but if
any provision of this General Release is held to be invalid, illegal or unenforceable in any respect under any applicable law or rule in any jurisdiction, such invalidity, illegality or unenforceability shall not affect any other provision or any
other jurisdiction, but this General Release shall be reformed, construed and enforced in such jurisdiction as if such invalid, illegal or unenforceable provision had never been contained herein. 

BY SIGNING THIS GENERAL RELEASE, I REPRESENT AND AGREE THAT: 
  

	 	1.	I HAVE READ IT CAREFULLY; 

  

	 	2.	I UNDERSTAND ALL OF ITS TERMS AND KNOW THAT I AM GIVING UP IMPORTANT RIGHTS, INCLUDING BUT NOT LIMITED TO, RIGHTS UNDER THE AGE DISCRIMINATION IN EMPLOYMENT ACT OF 1967, AS AMENDED, TITLE VII OF THE CIVIL RIGHTS ACT OF
1964, AS AMENDED; THE EQUAL PAY ACT OF 1963, THE AMERICANS WITH DISABILITIES ACT OF 1990; AND THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED; 

  

	 	3.	I VOLUNTARILY CONSENT TO EVERYTHING IN IT; 

  
 A-3 

	 	4.	I HAVE BEEN ADVISED TO CONSULT WITH AN ATTORNEY BEFORE EXECUTING IT AND I HAVE DONE SO OR, AFTER CAREFUL READING AND CONSIDERATION I HAVE CHOSEN NOT TO DO SO OF MY OWN VOLITION; 

 

	 	5.	I HAVE HAD AT LEAST [21][45] DAYS FROM THE DATE OF MY RECEIPT OF THIS RELEASE TO CONSIDER IT AND THE CHANGES MADE SINCE MY RECEIPT OF THIS RELEASE ARE NOT MATERIAL OR WERE MADE AT MY REQUEST
AND WILL NOT RESTART THE REQUIRED [21][45]-DAY PERIOD; 

  

	 	6.	I UNDERSTAND THAT I HAVE SEVEN (7) DAYS AFTER THE EXECUTION OF THIS RELEASE TO REVOKE IT AND THAT THIS RELEASE SHALL NOT BECOME EFFECTIVE OR ENFORCEABLE UNTIL THE REVOCATION PERIOD HAS EXPIRED; 

 

	 	7.	I HAVE SIGNED THIS GENERAL RELEASE KNOWINGLY AND VOLUNTARILY AND WITH THE ADVICE OF ANY COUNSEL RETAINED TO ADVISE ME WITH RESPECT TO IT; AND 

 

	 	8.	I AGREE THAT THE PROVISIONS OF THIS GENERAL RELEASE MAY NOT BE AMENDED, WAIVED, CHANGED OR MODIFIED EXCEPT BY AN INSTRUMENT IN WRITING SIGNED BY AN AUTHORIZED REPRESENTATIVE OF THE COMPANY AND BY ME. 

 

									
	SIGNED:	 	  
	 		 	DATED:	 	  

		 	John A. Feenan	 		 		 	

  
 A-4EX-10.10

 Exhibit 10.10 
 BAIN CAPITAL EVEREST US HOLDING, INC. 
 c/o Bain Capital Partners, LLC

 590 Madison Avenue, 42nd Floor 
 New York, NY 10022 
 September 22, 2010 

Mr. Marco Levi 
 Runggelmatt, 19A

 8832-Wollerau 
 Switzerland

  

	Re:	Employment Offer Letter 

 Dear Marco:

 On behalf of Bain Capital Everest US Holding, Inc. (the “Company”), we are pleased to offer you this letter agreement (this
“Agreement”), which sets forth all of the terms and conditions of your employment with the Company. Your rights and the Company’s rights hereunder are subject, in all respects, to your execution of this Agreement and to the
occurrence of the closing (the “Closing”) of the transactions contemplated by the Sale and Purchase Agreement among The Dow Chemical Company, Styron LLC, Styron Holding B.V. and the Company, dated as of March 2, 2010.

  

	1.	At-Will Employment. Your employment with the Company under this Agreement will commence on the Closing and will continue
for an indefinite term. Your employment with the Company will be “at-will,” and will be terminable by you or the Company at any time and for any reason (or no reason). 

 

	2.	Title and Reporting. During the term of your employment with the Company, you will serve as the Vice President & General Manager, Latex and Emulsion
Polymers of the Company and you will report directly to the Chief Executive Officer of the Company. 

  

	3.	Duties and Responsibilities. You will have the duties and responsibilities that are normally associated with the position described above and such additional
executive responsibilities as may be prescribed by the Board of Directors of the Company or the Chief Executive Officer of the Company from time to time that are not materially inconsistent with your position. During your period of employment, you
will devote substantially all of your business time, energy and efforts to your obligations hereunder and to the affairs of the Company; provided that the foregoing shall not prevent you from (i) participating in charitable, civic, educational,
professional, community or industry affairs and (ii) managing your passive personal investments, in each case, so long as such activities, individually or in the aggregate, do not materially interfere with your duties hereunder or create a
potential business or fiduciary conflict. 

  

	4.	 Base Salary. You will receive a base salary at a rate of 480,000 CHF (Swiss francs) per annum, which will be paid in equal installments in
accordance with the Company’s 

	 	
normal payroll practices as in effect from time to time. Your base salary will be subject to review each year for possible increase (but not decrease) by the Board of Directors of the Company in
its sole discretion. The base salary as determined herein from time to time shall constitute “Base Salary” for purposes of this Agreement. 

  

	5.	Annual Bonus. 

  

	 	(a)	General. Except as otherwise provided in Section 5(b) hereof, your annual performance award (“Annual Bonus”) will have a payout range from
0% to 200% of your annual base salary, with a target annual award of 55% of your annual base salary (“Target Bonus”). Your Annual Bonus will be subject to the achievement of annual performance objectives established by the
Company’s Board of Directors in consultation with you and the Chief Executive Officer of the Company, and shall be paid in the calendar year following the calendar year to which such Annual Bonus relates at the same time as annual bonuses are
paid to other senior executives of the Company, subject to continued employment at the time of payment, except as otherwise provided in this Agreement. 

  

	 	(b)	2010 Annual Bonus. For calendar year 2010, you will be eligible to receive an Annual Bonus calculated in two periods: 

 

	 	•	 	 Period 1 – January 1, 2010 through the Closing. For the period from January 1, 2010 through the Closing, you will be eligible to
receive a pro rata Annual Bonus based on a Target Bonus percentage of 40% of your base salary as in effect immediately prior to the Closing, subject to the achievement of the applicable performance objectives previously set at the beginning of 2010.
Any amount payable in respect of the period from January 1, 2010 through the Closing will be a liability of The Dow Chemical Company and will be paid in accordance with the terms and conditions of the applicable plan or arrangement under which
the Annual Bonus was granted as in effect prior to the Closing. 

  

	 	•	 	 Period 2 – Closing through December 31, 2010. For the period from the Closing through December 31, 2010, you will be eligible to
receive a pro rata Annual Bonus based on a Target Bonus percentage of 55% of your base salary as in effect hereunder, subject to the achievement of the applicable performance objectives set by the Company’s Board of Directors promptly following
the Closing in consultation with you and the Chief Executive Officer of the Company. Payment of any earned Annual Bonus for the period from the Closing through December 31, 2010 will be made in calendar year 2011 at the same time Annual Bonuses
are paid to all other senior executives of the Company generally, subject to your continued employment with the Company at the time of payment, except as otherwise provided in this Agreement. 

 

	6.	 Equity Award. Upon the Closing, you will be granted incentive securities or interests in one or more incentive securities, generally
representing the right to participate in 0.40% 

  
 2 

	 	
of the capital appreciation of Bain Capital Everest Manager Holding SCA, the ultimate Luxembourg parent holding company of the Company. Additional details on the terms and conditions applicable
to such incentive securities will follow under separate cover. 

  

	7.	Employee Benefits. You will be entitled to participate in the employee and fringe benefit plans and programs (including, without limitation, health, retirement
and severance programs) of the Company in effect during your employment that are generally available to the senior management of the Company, subject to and on a basis consistent with the terms, conditions and overall administration of such plans
and programs. 

  

	8.	Termination. 

  

	 	(a)	Your employment with the Company and its subsidiaries shall terminate (i) upon your written notice to the Company of a termination for “Good Reason” (as
defined herein), (ii) upon your thirty (30) days’ prior written notice to the Company of your voluntary termination of employment without Good Reason (which the Company may, in its sole discretion, make effective earlier than any
notice date), (iii) immediately upon your death or upon written notice by the Company to you of a termination of employment for Cause or without Cause (other than for death or Disability), or (iv) upon ten (10) days’ prior
written notice by the Company to you of your termination of employment due to “Disability” (as defined herein). 

  

	 	(b)	For purposes of this Agreement: 

  

	 	(i)	“Cause” means your (A) continued failure to follow the lawful directives of the Board or a more senior executive of the Company after written
notice from the Company and a period of no less than thirty (30) days to cure such failure; (B) willful misconduct or gross negligence in the performance of your duties; (C) conviction of, or pleading of guilty or nolo
contendere to, a felony; (D) material violation of a material Company policy that is not cured within fifteen (15) days of written notice from the Board; (E) performance of any material act of theft, embezzlement, fraud or
misappropriation of or in respect of the Company’s property; (F) continued failure to cooperate in any audit or investigation of financial or business practices of the Company after written request for cooperation from the Board and a
period of no less than ten (10) days to cure such failure; or (G) breach of any of the restrictive covenants set forth in the Company’s Confidential Information, Inventions, Non-Competition and Non-Solicitation Agreement, attached as Exhibit A hereof or in any other written agreement between you and the Company and/or its affiliates that causes material and demonstrable harm to the Company and that
is not cured within fifteen (15) days of written notice from the Board; 

  

	 	(ii)	 “Disability” means your failure to have performed your material duties hereunder due to a physical or mental injury, infirmity or
incapacity for one hundred eighty (180) days (including weekends and holidays) in any 

  
 3 

	 	
365-day period, as determined by the Board in its reasonable discretion; and 

 

	 	(iii)	“Good Reason” means the occurrence of any of the following events, without your express written consent, unless such events are fully corrected in all
material respects by the Company within thirty (30) days following your written notice to the Company of the occurrence of (A) a material diminution in your Base Salary or Target Bonus, (B) your assignment of duties and/or
responsibilities that are materially inconsistent with your position as Vice President & General Manager, Latex and Emulsion Polymers of the Company (which, for the sake of clarity, shall not include becoming Vice President &
General Manager of another division or business of the Company that is substantially the same size as the division or business for which you were responsible immediately prior to such change), (C) relocation of your principal place of business
to any country other than Switzerland, or (D) a change in reporting structure such that you are no longer reporting to the Company’s Chief Executive Officer or one of his direct reports. You shall provide the Company with a written notice
detailing the specific circumstances alleged to constitute Good Reason within ninety (90) days after the first occurrence of such circumstances, and actually terminate employment within thirty (30) days following the expiration of the
Company’s thirty (30)-day period described above. Otherwise, you will be deemed to have irrevocably waived any claim of such circumstances as “Good Reason”. 

 

	9.	Severance. 

  

	 	(a)	 In the event of your termination of employment from the Company by reason of your death, Disability, voluntary resignation without Good Reason or by
the Company for Cause, you will be entitled to receive (i) any unpaid Base Salary through the date of termination, (ii) except in the case of your termination by the Company for Cause, any Annual Bonus earned but unpaid with respect to the
fiscal year ending on or preceding the date of termination, payable at the same time as it would have been paid provided you had not undergone a termination of employment; (iii) reimbursement in accordance with applicable Company policy for any
unreimbursed business expenses incurred through the date of termination; (iv) any accrued but unused vacation time in accordance with Company policy and (v) all other payments, benefits or fringe benefits (excluding any severance or
termination benefits) to which you shall be entitled under the terms of any applicable compensation arrangement or benefit, equity or fringe benefit plan or program or grant or this Agreement (collectively, Sections 9(a)(i) through
9(a)(v) hereof shall be hereafter referred to as the “Accrued Benefits”). In addition, in the event of your termination of employment from the Company by reason of your death or Disability, you will also be entitled to
receive a pro rata Annual Bonus (based on the number of days of employment in the calendar year in which such termination occurs) based on actual Company performance through the applicable performance period, payable the same time as the Annual
Bonus would otherwise 

  
 4 

	 	
have been paid provided there had been no termination of employment during such calendar year (a “Pro Rata Bonus”). 

 

	 	(b)	In the event of your termination of employment from the Company by you for Good Reason or by the Company without Cause (each, a “Qualifying
Termination”) during the two (2)-year period following the Closing, you will be entitled to receive (i) the Accrued Benefits, (ii) an amount equal to one (1) times the sum of
(x) your base salary, at the rate then in effect on your date of termination, plus (y) your Target Bonus, payable in equal installments over the twelve-month period following your termination of employment in accordance with the
Company’s payroll practices in effect on the date of your termination of employment, and (iii) a Pro Rata Bonus. Thereafter, in the event of your Qualifying Termination, you will receive severance benefits from the Company in accordance
with the severance practices of the Company, but, in any event, a total amount no less than (i) the Accrued Benefits, (ii) an amount equal to one (1) times the sum of (x) your base salary, at the rate then in effect on your date
of termination, plus (y) your Target Bonus and (iii) a Pro Rata Bonus. 

  

	 	(c)	Payment of all amounts described in this Section 9 other than the Accrued Benefits (the “Severance Payments”) shall only be payable if you deliver to the
Company and do not revoke a general release of claims in favor of the Company in substantially the form of Exhibit B attached hereto. Such release shall be executed and delivered (and no longer subject to revocation, if applicable) within
sixty (60) days following termination. 

  

	10.	Restrictive Covenants. As a condition to your employment, you will execute the Company’s Confidential Information, Inventions, Non-Competition and Non-Solicitation Agreement, a copy of which is attached hereto as Exhibit A. 

 

	11.	No Assignments. This Agreement is personal to each of the parties hereto. Except as provided herein, no party may assign or delegate any right or obligation
hereunder without first obtaining the written consent of the other party hereto. The Company may assign this Agreement to any successor to all or substantially all of the business and/or assets of the Company, provided that the Company will
require such successor to expressly assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession had taken place. As used in this Agreement,
“Company” will mean the Company and any successor to its business and/or assets, which assumes and agrees to perform the duties and obligations of the Company under this Agreement by operation of law or otherwise.

  

	12.	Withholding Taxes. The Company may withhold from any and all amounts payable to you hereunder such federal, state and local taxes as may be required to be
withheld pursuant to any applicable law or regulation. 

  

	13.	Governing Law. The terms of this Agreement and your employment with the Company will be governed by the laws of the State of Delaware, without giving effect to
the conflicts of laws principles thereof. 

  
 5 

	14.	Indemnification and Liability Insurance. The Company hereby agrees to indemnify you and hold you harmless to the fullest extent permitted by law against and in
respect of any and all actions, suits, proceedings, claims, demands, judgments, costs, expenses (including advancement of reasonable attorney’s fees), losses, and damages resulting from your good faith performance of your duties and obligations
with the Company and the Company’s affiliates. The Company shall cover you under directors’ and officers’ liability insurance both during and, while potential liability exists, after employment with the Company in the same amount and
to the same extent as the Company covers its other officers and directors. These obligations shall survive the termination of your employment with the Company. 

 

	15.	No Mitigation; No Offset. In no event shall you be obligated to seek other employment or take any other action by way of mitigation of the amounts payable to you
under any of the provisions of this Agreement, nor shall the amount of any payment hereunder be reduced by any compensation earned by you as a result of employment by a subsequent employer, 

 

	16.	Entire Agreement; Amendment. This Agreement and the restrictive covenants agreement referenced in Section 10 hereof constitute the entire agreement between
you and the Company with respect to the subject matter hereof and supersede any and all prior agreements or understandings between you and the Company with respect to the subject matter hereof, whether written or oral. This Agreement may be amended
or modified only by a written instrument executed by you and the Company. 

 [REMAINDER OF PAGE INTENTIONALLY
LEFT BLANK] 

  
 6 

 This Agreement is intended to be a binding obligation on you and the Company regarding your employment with
the Company. If this Agreement accurately reflects your understanding as to the terms and conditions of your employment with the Company, please sign and date one copy of this Agreement and return the same to us for the Company’s records. You
should make a copy of the executed Agreement for your records. 
 Marco, on behalf of the Company, we are pleased to offer you this role and the
compensation package set forth in this Agreement. We hope you find this opportunity as exciting as we do! 
  

					
	Very truly yours,	 		 	
			
	 /s/ Chris Pappas
	 		 	 /s/ Steve Zide

	 Chris Pappas

President & CEO
 of the
Company
	 		 	 Steve Zide
 Bain Capital
Everest US Holding, Inc.

 The above terms and conditions accurately reflect our understanding regarding the terms and conditions of my employment
with the Company, and I hereby confirm my agreement to the same. 
  

					
	Dated: 22 /3/, 2010	 		 	 /s/ Marco Levi

		 		 	Marco Levi

 Offer Letter Signature Page 

 EXHIBIT A 
 BAIN CAPITAL EVEREST US HOLDING, INC. 
 CONFIDENTIAL INFORMATION,
INVENTIONS, 
 NON-COMPETITION AND
NON-SOLICITATION AGREEMENT 
 THIS CONFIDENTIAL INFORMATION, INVENTIONS, NON-COMPETITION AND NON-SOLICITATION AGREEMENT (this “Agreement”) is made by and between Bain Capital Everest US Holding, Inc., a Delaware corporation
(the “Company”), and the undersigned employee (the “Employee”). 
 WHEREAS, in partial
consideration for the Employee’s continued service with the Company, the Company wishes to enter into this Agreement and bind the Employee to certain restrictive covenants in favor of the Company and the Company’s affiliates as set forth
herein. 
 NOW, THEREFORE, in consideration of the foregoing, of the mutual promises contained herein and of other good
and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follows: 
 1. CONFIDENTIALITY. During the course of the Employee’s employment with the Company, the Employee will learn confidential information on behalf of the Company. The Employee agrees that the
Employee shall not, directly or indirectly, use, make available, sell, disclose or otherwise communicate to any person, other than in the course of the Employee’s assigned duties and for the benefit of the Company, either during the period of
the Employee’s employment or at any time thereafter, any business and technical information or trade secrets, nonpublic, proprietary or confidential information, knowledge or data relating to the Company, any of its subsidiaries, affiliated
companies or businesses, or received from third parties subject to a duty on the Company’s and its subsidiaries’ and affiliates’ part to maintain the confidentiality of such information and to use it only for certain limited purposes,
in each case which shall have been obtained by the Employee during the Employee’s employment by the Company (or any predecessor). The foregoing shall not apply to information that (a) was known to the public prior to its disclosure to the
Employee, (b) becomes generally known to the public subsequent to disclosure to the Employee through no wrongful act of the Employee or any representative of the Employee, or (c) the Employee is required to disclose by applicable law,
regulation or legal process (provided that the Employee provides the Company with prior notice of the contemplated disclosure and cooperates with the Company at its expense in seeking a protective order or other appropriate protection of such
information). The terms and conditions of this Agreement shall remain strictly confidential, and the Employee hereby agrees not to disclose the terms and conditions hereof to any person or entity, other than (i) to immediate family members,
legal advisors or personal tax or financial advisors, or prospective future employers solely for the purpose of disclosing the limitations on the Employee’s conduct imposed hereunder who, in each case, agree to keep such information
confidential or (ii) if the Employee is required to disclose by applicable law, regulation or legal process. 
 2.
NONCOMPETITION. The Employee acknowledges that the Employee performs services of a unique nature for the Company that are in irreplaceable, and that the 

 
Employee’s performance of such services to a competing business will result in irreparable harm to the Company. Accordingly, during the Employee’s employment and for a period of one
(1) year thereafter, the Employee agrees that the Employee will not, directly or indirectly, own, manage, operate, control, be employed by (whether as an employee, consultant, independent contractor or otherwise, and whether or not for
compensation) or render services to any person, firm, corporation or other entity, in whatever form, engaged in any material business that the Company is engaged in during the term of Employee’s employment; provided, that such material business
(x) is limited to the specific products and not other uses of the chemicals used within such material business and (y) does not include alternative products that could be used for the same purpose (e.g., if the material business is for
heating, then coal would not be considered competitive with oil) (the “Prohibited Activities”). Notwithstanding the foregoing, nothing herein shall prohibit the Employee from being (i) a passive owner of not more than one
percent (1%) of the equity securities of a publicly traded corporation engaged in a business that is in competition with the Company or any of its affiliates, so long as the Employee has no active participation in the business of such
corporation or (ii) employed by, or providing services to (or receiving compensatory equity awards from a parent entity of), a subsidiary, division or unit of any entity that engages in the Prohibited Activities so long as the Employee does not
provide any services to such portion of the entity’s business that engages in the Prohibited Activities. 
 3.
NONSOLICITATION; NONINTERFERENCE. During the Employee’s employment with the Company and for a period of one (1) year thereafter, the Employee agrees that the Employee shall not, except in the furtherance of the Employee’s
duties hereunder, directly or indirectly, individually or on behalf of any other person, firm, corporation or other entity, (a) solicit, aid or induce any customer of the Company or any of its affiliates to purchase goods or services then sold
by the Company or any of its affiliates from another person, firm, corporation or other entity or assist or aid any other person or entity in identifying or soliciting any such customer, unless the Employee is employed with such customer following
the Employee’s termination of employment with the Company, (b) solicit, aid or induce any employee, representative or agent of the Company or any of its affiliates to leave such employment or retention or, in the case of employees, to
accept employment with or render services to or with any other person, firm, corporation or other entity unaffiliated with the Company or any of its affiliates, or hire or retain any such employee, or take any action to materially assist or aid any
other person, firm, corporation or other entity in identifying, hiring or soliciting any such employee, or (c) interfere, or aid or induce any other person or entity in interfering, with the relationship between the Company or any of its
affiliates and any of their respective vendors, joint vendors or licensors. An employee, representative or agent shall be deemed covered by this Section 3 while so employed or retained and for a period of six (6) months thereafter.
Notwithstanding the foregoing, the provisions of this Section 3 shall not be violated by (A) general advertising or solicitation not specifically targeted at Company or affiliate-related individuals or entities or (B) the Employee
serving as a reference, upon request, with regard to entities with which the Employee is not associated. 
 4.
INVENTIONS. (a) The Employee acknowledges and agrees that all ideas, methods, inventions, discoveries, improvements, work products, developments or works of authorship (“Inventions”), whether patentable or unpatentable,
(i) that relate to the Employee’s work with the Company, made or conceived by the Employee, solely or jointly with others, during the period of the Employee’s employment with the Company, or (ii) suggested by any

  
 2 

 
work that the Employee performs in connection with the Company, either while performing the Employee’s duties with the Company or on the Employee’s own time, shall belong exclusively to
the Company (or its designee), whether or not patent applications are filed thereon. The Employee will keep full and complete written records (the “Records”), in the manner prescribed by the Company, of all Inventions, and will promptly
disclose all Inventions completely and in writing to the Company. The Records shall be the sole and exclusive property of the Company, and the Employee will surrender them upon termination of employment, or upon the Company’s request. The
Employee will assign to the Company the Inventions and all patents that may issue thereon in any and all countries, whether during or subsequent to the period of employment with the Company, together with the right to file, in the Employee’s
name or in the name of the Company (or its designee), applications for patents and equivalent rights (the “Applications”). The Employee will, at any time during and subsequent to the period of employment with the Company, make such
applications, sign such papers, take all rightful oaths, and perform all acts as may be requested from time to time by the Company with respect to the Inventions. The Employee will also execute assignments to the Company (or its designee) of the
Applications, and give the Company and its attorneys all reasonable assistance (including the giving of testimony) to obtain the Inventions for the Company’s benefit, all without additional compensation to the Employee from the Company.

 (b) In addition, the Inventions will be deemed Work for Hire, as such term is defined under the copyright laws of the United
States, on behalf of the Company and the Employee agrees that the Company will be the sole owner of the Inventions, and all underlying rights therein, in all media now known or hereinafter devised, throughout the universe and in perpetuity without
any further obligations to the Employee. If the Inventions, or any portion thereof, are deemed not to be Work for Hire, the Employee hereby irrevocably conveys, transfers and assigns to the Company, all rights, in all media now known or hereinafter
devised, throughout the universe and in perpetuity, in and to the Inventions, including, without limitation, all of the Employee’s right, title and interest in the copyrights (and all renewals, revivals and extensions thereof) to the
Inventions, including, without limitation, all rights of any kind or any nature now or hereafter recognized, including, without limitation, the unrestricted right to make modifications, adaptations and revisions to the Inventions, to exploit and
allow others to exploit the Inventions and all rights to sue at law or in equity for any infringement, or other unauthorized use or conduct in derogation of the Inventions, known or unknown, prior to the date hereof, including, without limitation,
the right to receive all proceeds and damages therefrom. In addition, the Employee hereby waives any so-called “moral rights” with respect to the Inventions. To the extent that the Employee has any
rights in the results and proceeds of the Inventions that cannot be assigned in the manner described herein, the Employee agrees to unconditionally waive the enforcement of such rights. The Employee hereby waives any and all currently existing and
future monetary rights in and to the Inventions and all patents that may issue thereon, including, without limitation, any rights that would otherwise accrue to the Employee’s benefit by virtue of the Employee being an employee of or other
service provider to the Company. 
 5. RETURN OF COMPANY PROPERTY. On the date of the Employee’s termination of
employment with the Company for any reason (or at any time prior thereto at the Company’s request), the Employee shall return all property belonging to the Company or its affiliates (including, but not limited to, any Company-provided laptops,
computers, cell phones, 

  
 3 

 
wireless electronic mail devices or other equipment, or documents and property belonging to the Company). The Employee may retain the Employee’s rolodex and similar address books provided
that such items only include contact information. 
 6. REASONABLENESS OF COVENANTS. In signing this Agreement, the
Employee gives the Company assurance that the Employee has carefully read and considered all of the terms and conditions of this Agreement and the restraints imposed on the Employee’s conduct hereunder. The Employee agrees that these restraints
are necessary for the reasonable and proper protection of the Company and its affiliates and their trade secrets and confidential information and that each and every one of the restraints is reasonable in respect to subject matter, length of time
and geographic area, and that these restraints, individually or in the aggregate, will not prevent the Employee from obtaining other suitable employment during the period in which the Employee is bound by the restraints. The Employee acknowledges
that each of these covenants has a unique, very substantial and immeasurable value to the Company and its affiliates and that the Employee has sufficient assets and skills to provide a livelihood while such covenants remain in force. The Employee
further covenants that the Employee will not challenge the reasonableness or enforceability of any of the covenants set forth in this Agreement. It is also agreed that each of the Company’s affiliates will have the right to enforce all of the
Employee’s obligations to that affiliate under this Agreement. 
 7. AFFILIATES. For purposes of this Agreement, any
reference to an “affiliate” or “affiliates” shall only apply to Bain Capital Everest Manager Holding SCA (“Parent”) or any direct or indirectly controlled subsidiary of the Company or Parent. 

8. REFORMATION. If it is determined by a court of competent jurisdiction in any state that any restriction in this Agreement is
excessive in duration or scope or is unreasonable or unenforceable under applicable law, it is the intention of the parties that such restriction may be modified or amended by the court to render it enforceable to the maximum extent permitted by the
laws of that state. 
 9. TOLLING. In the event of any violation of the provisions of this Agreement, the Employee
acknowledges and agrees that the post-termination restrictions contained herein shall be extended by a period of time equal to the period of such violation, it being the intention of the parties hereto that the running of the applicable
post-termination restriction period shall be tolled during any period of such violation. 
 10. SURVIVAL OF PROVISIONS.
The obligations contained in this Agreement shall survive the termination of the Employee’s employment with the Company and shall be fully enforceable thereafter. 
 11. EQUITABLE RELIEF AND OTHER REMEDIES. The Employee acknowledges and agrees that the Company’s remedies at law for a breach or threatened breach of any of the provisions of this Agreement
would be inadequate and, in recognition of this fact, the Employee agrees that, in the event of such a breach or threatened breach, in addition to any remedies at law, the Company shall be entitled to obtain equitable relief in the form of specific
performance, a temporary restraining order, a temporary or permanent injunction or any other 

  
 4 

 
equitable remedy which may then be available, without the necessity of showing actual monetary damages or the posting of a bond or other security. 

12. SEVERABILITY. To the extent that any provision of this Agreement or portion thereof shall be invalid or unenforceable, it
shall be considered deleted therefrom and the remainder of such provision and of this Agreement shall be unaffected and shall continue in full force and effect. 
 13. NO RIGHT TO CONTINUED EMPLOYMENT. Nothing herein shall give the Employee any right to continued employment with the Company or any of its affiliates, or in any way limit the right of the
Company to terminate the Employee’s employment at any time and for any reason (or no reason), with or without notice. 

14. SUCCESSORS AND ASSIGNS. This Agreement shall be binding upon and shall inure to the benefit of the Company, its successors and
assigns. The Employee’s obligations under this Agreement shall not be assignable by the Employee. 
 15.
COUNTERPARTS. This Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original but all of which together shall constitute one and the same instrument. 

16. GOVERNING LAW; JURISDICTION. This Agreement shall be construed, interpreted and enforced in accordance with the laws of the
State of Delaware, without giving effect to the choice of law principles thereof. Each of the parties agrees that any dispute between the parties shall be resolved only in the courts of the State of Delaware or the United States District Court for
the District of Delaware and the appellate courts having jurisdiction of appeals in such courts. In that context, and without limiting the generality of the foregoing, each of the parties hereto irrevocably and unconditionally (a) submits in
any proceeding relating to this Agreement or the Employee’s employment by the Company or any affiliate, or for the recognition and enforcement of any judgment in respect thereof (a “Proceeding”), to the exclusive jurisdiction of the
courts of the State of Delaware, the court of the United States of America for the District of Delaware, and appellate courts having jurisdiction of appeals from any of the foregoing, and agrees that all claims in respect of any such Proceeding
shall be heard and determined in such Delaware State court or, to the extent permitted by law, in such federal court, (b) consents that any such Proceeding may and shall be brought in such courts and waives any objection that the Employee or
the Company may now or thereafter have to the venue or jurisdiction of any such Proceeding in any such court or that such Proceeding was brought in an inconvenient court and agrees not to plead or claim the same, (c) WAIVES ALL RIGHT TO TRIAL
BY JURY IN ANY PROCEEDING (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE EMPLOYEE’S EMPLOYMENT BY THE COMPANY OR ANY AFFILIATE OF THE COMPANY, OR THE EMPLOYEE’S OR THE COMPANY’S
PERFORMANCE UNDER, OR THE ENFORCEMENT OF, THIS AGREEMENT, (d) agrees that service of process in any such Proceeding may be effected by mailing a copy of such process by registered or certified mail (or any substantially similar form of mail),
postage prepaid, to such party, and (e) agrees that nothing in this Agreement shall affect the right to effect service of process in any other manner 

  
 5 

 
permitted by the laws of the State of Delaware. Each party shall be responsible for its own legal fess incurred in connection with any dispute hereunder. 

17. ENTIRE AGREEMENT. This Agreement constitutes the entire agreement by the Company and the Employee with respect to the subject
matter hereof, and supersedes any and all prior agreements or understandings between the Employee and the Company with respect to the subject matter hereof, whether written or oral. This Agreement may be amended or modified only by a written
instrument executed by the Employee and the Company. 
 IN WITNESS WHEREOF, the parties hereto have executed this
Agreement on this      day of September, 2010. 
  

			
	BAIN CAPITAL EVEREST US HOLDING, INC.
		
	By:	 	 /s/ Steve Zide

 

			
	 Print Name:
	 	 Steve Zide

 

			
	Print Title:	 	  

 

			
	EMPLOYEE
	
	 /s/ Marco Levi

	Signature	 	

  

			
	Print Name:	 	 MARCO LEVI

  
 6

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