Form of Restricted Stock Unit Award Agreement for Executives

Exhibit 10.5

TRINSEO S.A.

2014 OMNIBUS INCENTIVE PLAN

RESTRICTED STOCK UNIT AGREEMENT

This agreement (this “Agreement”) evidences an award (the “Award”) of restricted stock units (the “Restricted Stock Units”) granted by Trinseo S.A. (the “Company”) to the undersigned (the “Grantee”) pursuant to the Trinseo S.A. 2014 Omnibus Incentive Plan (as amended from time to time, the “Plan”), which is incorporated herein by reference.

1.         Grant of Restricted Stock Units.  On the date of grant set forth above (the “Grant Date”) the Company granted to the Grantee an award consisting of the right to receive, on the terms provided herein and in the Plan, one share of Stock with respect to each Restricted Stock Unit forming part of the Award, in each case, subject to adjustment pursuant to Section 7 of the Plan in respect of transactions occurring after the date hereof.

The grant of the Restricted Stock Units is a one-time benefit and does not create any contractual or other right for the Grantee to receive a grant of restricted stock units or benefits in lieu of restricted stock units in the future.

The Award shall not be interpreted to bestow upon the Grantee any equity interest or ownership in the Company or any Affiliate prior to the date on which the Company delivers shares of Stock to the Grantee (if any). The Grantee is not entitled to vote any shares of Stock by reason of the granting of this Award or to receive or be credited with any dividends declared and payable on any share of Stock prior to the date on which any such share is delivered to the Grantee hereunder. The Grantee shall have the rights of a shareholder only as to those shares of Stock, if any, that are delivered under this Award.

2.         Meaning of Certain Terms.  Except as otherwise defined herein, all capitalized terms used herein have the same meaning as in the Plan.

3.         Dividend Equivalents.  During the period beginning on the Grant Date and ending on the date that shares of Stock are issued in settlement of vested Restricted Stock Units, the Grantee will accrue dividend equivalents on the Restricted Stock Units equal to any cash dividend or cash distribution that would have been paid on the Restricted Stock Unit had that Restricted Stock Unit been an issued and outstanding share of Stock on the record date for the dividend or distribution. Such accrued dividend equivalents (i) will vest and become payable upon the same terms and at the same time of settlement as the Restricted Stock Unit to which they relate (and will be payable with respect to any shares of Stock that are issued or that are withheld pursuant to Section 8 in order to satisfy Grantee’s Tax-Related Items), (ii) will be denominated and payable solely in cash and paid in such manner as the Company deems appropriate, and (iii) will not bear or accrue interest. Dividend equivalent payments, at settlement, will be net of applicable federal, state, local

and foreign income and social insurance withholding taxes as provided in Section 8. Upon the forfeiture of the Restricted Stock Units, any accrued dividend equivalents attributable to such Restricted Stock Units will also be forfeited.

4.         Vesting, etc.

(a)        The Award shall vest in full as to 100% of the Restricted Stock Units subject to the Award on the third anniversary of the Grant Date (“Vesting Date”), subject to the Grantee’s continued Employment with the Company through such date.  Except as provided in sections (b) and (c) below, if the Grantee’s Employment with the Company terminates for any reason prior to the Vesting Date, the Award will be automatically and immediately forfeited upon such termination.

(b)        If the Grantee’s Employment terminates due to his or her Retirement (as defined below) or death or is terminated by the Company other than for Cause or due to his or her Permanent Disability, in each case, prior to the Vesting Date, the Award, to the extent then outstanding, will be treated as follows:

i.    If the Grantee’s Employment terminates as a result of the Grantee’s Retirement (as defined below), upon such termination the Award will vest in an amount equal to (A) the total number of Restricted Stock Units subject to the Award that the Grantee would have vested in had the Grantee remained in continuous Employment through the Vesting Date, multiplied by (B) a fraction, the numerator of which is the number of full months occurring between the Grant Date and the date of Grantee’s Retirement, and the denominator of which is thirty-six (36).  For purposes hereunder, “Retirement” means a retirement from active Employment after the Grantee has attained age 55 with at least 10 years of continuous service with the Company, or its predecessor entity, The Dow Chemical Company, or any of its subsidiaries, or as defined in the Grantee's employment or other agreement with the Company.

ii.   If the Grantee’s Employment is terminated due to his or her death or by the Company due to his or her Permanent Disability, upon such termination, the Award will immediately vest in full as to the total number of Restricted Stock Units subject to the Award.

iii.  If the Grantee’s Employment is terminated by the Company other than for Cause in connection with a restructuring or redundancy, as determined by the Company, upon such termination, the Award will vest in an amount equal to (A) the total number of Restricted Stock Units subject to the Award that the Grantee would have vested in had the Grantee remained in continuous Employment through the Vesting Date, multiplied by (B) a fraction, the numerator of which

is the number of full months occurring between the Grant Date and the Grantee’s date of Employment termination, and the denominator of which is thirty-six (36).

(c)        If, within the twenty-four (24)-month period following the occurrence of a Change in Control (as defined below), the Grantee’s Employment is terminated by the Company other than for Cause or, if the Grantee is otherwise subject to an effective employment or other individual agreement with the Company that provides the Grantee with the ability to terminate his or her employment for “good reason,” by the Grantee for “good reason” (with such term having the meaning ascribed thereto in the employment or other individual agreement, if any, between the Grantee and the Company for so long as such agreement is in effect), upon such termination and in lieu of the treatment provided for in Section 4(b)(iii) above, the Award, to the extent then outstanding, will immediately vest in full as to the total number of Restricted Stock Units subject to the Award.

i.    For purposes of this Agreement, “Change in Control” means the first to occur of any of the following events:

1.   an event in which any “person,” as such term is used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934 (the “1934 Act”) (other than (A) the Company, (B) any subsidiary of the Company, (C) any trustee or other fiduciary holding securities under an employee benefit plan of the Company or of any subsidiary of the Company, and (D) any company owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as their ownership of stock of the Company), is or becomes the “beneficial owner” (as defined in Section 13(d) of the 1934 Act), together with all affiliates and associates (as such terms are used in Rule 12b-2 of the General Rules and Regulations under the 1934 Act) of such person, directly or indirectly, of securities of the Company representing 40% or more of the combined voting power of the Company’s then outstanding securities;

2.   the consummation of the merger or consolidation of the Company with any other company, other than (i) a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity), in combination with the ownership of any trustee or other fiduciary holding securities under an employee benefit plan of the Company or any subsidiary of the Company, more than 50% of the combined voting power of the voting

securities of the Company or such surviving entity outstanding immediately after such merger or consolidation and (ii) a merger or consolidation effected to implement a recapitalization of the Company (or similar transaction) after which no “person” “beneficially owns” (with the determination of such “beneficial ownership” on the same basis as set forth in clause (1) of this definition) securities of the Company or the surviving entity of such merger or consolidation representing 50% or more of the combined voting power of the securities of the Company or the surviving entity of such merger or consolidation; or

3.   the complete liquidation of the Company or the sale or disposition by the Company of all or substantially all of the Company’s assets.

Notwithstanding the foregoing, to the extent any amount constituting “nonqualified deferred compensation” subject to Section 409A would become payable under the Award by reason of a Change in Control, it shall become payable only if the event or circumstances constituting the Change in Control would also constitute a change in the ownership or effective control of the Company, or a change in the ownership of a substantial portion of the Company’s assets, within the meaning of subsection (a)(2)(A)(v) of Section 409A and the Treasury Regulations thereunder.

5.         Delivery of Stock.  Subject to Section 9(b), the Company shall, as soon as practicable upon the vesting of the Restricted Stock Units or any portion thereof as provided in Section 4(a), (b) or (c) of this Agreement (but in no event later than thirty (30) days following the date on which such Restricted Stock Units, or any portion thereof, vest) effect delivery of the Stock with respect to such vested Restricted Stock Units, or any portion thereof, to the Grantee (or, in the event of the Grantee’s death, to the Grantee’s beneficiary, which for purposes hereunder shall be (a) if permitted by the Administrator, the person(s) who has been designated by the Grantee in writing in a form and manner acceptable to the Administrator to receive the Award in the event of the Grantee’s death or (b) in the event no beneficiary designation has been made by the Grantee, the Grantee’s estate).  No Stock will be issued pursuant to this Award unless and until all legal requirements applicable to the issuance or transfer of such Stock have been complied with to the satisfaction of the Administrator, including, for the avoidance of doubt to the extent required by Luxembourg law, the payment by the Grantee to the Company of an amount in cash equal to the aggregate par value of the shares of Stock to be delivered in respect of the vested Restricted Stock Units on, or within thirty (30) days of, the vesting of the Restricted Stock Units.  The actual amount the Grantee will be required to pay will be determined at the time that the Award vests based on the par value of the Company’s Stock on the Vesting Date.

6.         Forfeiture; Recovery of Compensation. By accepting the Award the Grantee expressly acknowledges and agrees that his or her rights (and those of any permitted transferee) under the Award or to any Stock acquired under the Award or any proceeds from the disposition thereof, are subject to Section 6(a)(5) of the Plan (including any successor provision).  Nothing in the preceding sentence shall be construed as limiting the general application of Section 11 of this Agreement.

7.         Nontransferability.  Neither the Award nor the Restricted Stock Units may be transferred except at death in accordance with Section 6(a)(3) of the Plan.

8.         Responsibility for Taxes & Withholding.  Regardless of any action the Company or any of its Affiliates takes with respect to any or all income tax, social insurance, payroll tax, payment on account or other tax-related items related to the Grantee’s participation in the Plan and legally applicable to the Grantee (“Tax-Related Items”), the Grantee acknowledges that the ultimate liability for all Tax-Related Items is and remains the Grantee’s responsibility and may exceed the amount actually withheld by the Company or any of its Affiliates.  The Grantee further acknowledges that the Company and/or its Affiliates (a) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect to the Restricted Stock Units, including, but not limited to, the grant, vesting or settlement of the Restricted Stock Units, the issuance of Stock upon settlement of the Restricted Stock Units, the subsequent sale of Stock acquired pursuant to such issuance and the receipt of any dividends and/or dividend equivalents; and (b) do not commit to and are under no obligation to structure the terms of any Award to reduce or eliminate Grantee’s liability for Tax-Related Items or achieve any particular tax result.  Further, if the Grantee becomes subject to tax in more than one jurisdiction between the date of grant and the date of any relevant taxable event, the Grantee acknowledges that Company and/or its Affiliates may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

Prior to any relevant taxable or tax withholding event, as applicable, the Grantee will pay or make adequate arrangements satisfactory to the Company and/or its Affiliates to satisfy all Tax-Related Items.  In this regard, the Grantee authorizes the Company and/or its Affiliates, or their respective agents, at their discretion, to satisfy the obligations with regard to all Tax-Related Items by one or a combination of the following:

(i)       withholding from the Grantee’s wages/salary or other cash compensation paid to the Grantee by the Company and/or its Affiliates; or

(ii)      withholding from proceeds of the Stock acquired upon vesting/settlement of the Restricted Stock Units either through a voluntary sale or through a mandatory sale arranged by the Company (on Grantee’s behalf pursuant to this authorization); or

(iii)     withholding in Stock to be issued upon vesting/settlement of the Restricted Stock Units provided, however, that if the Grantee is a Section 16 officer of the Company under the U.S. Securities and Exchange Act of 1934, as amended, then the Company will withhold in shares of Stock upon the relevant taxable or tax withholding

event, as applicable, unless the use of such withholding method is problematic under applicable tax or securities law or has materially adverse accounting consequences, in which case, the obligation for Tax-Related Items may be satisfied by one or a combination of methods (i) and (ii) above.

To avoid negative accounting treatment, the Company and/or its Affiliates may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding amounts or other applicable withholding rates.  If the obligation for Tax-Related Items is satisfied by withholding in Stock, for tax purposes, the Grantee is deemed to have been issued the full number of shares of Stock attributable to the vested Restricted Stock Units, notwithstanding that a number of share are held back solely for the purpose of paying the Tax-Related Items due as a result of any aspect of the Grantee’s participation in the Plan.

The Grantee shall pay to the Company and/or its Affiliates any amount of Tax-Related Items that the Company and/or its Affiliates may be required to withhold or account for as a result of the Grantee’s participation in the Plan that will not for any reason be satisfied by the means previously described. The Company may refuse to issue or deliver the Stock or the proceeds of the sale of Stock if the Grantee fails to comply with the Grantee’s obligations in connection with the Tax-Related Items.

By accepting this grant of Restricted Stock Units, the Grantee expressly consents to the methods of withholding Tax-Related Items by the Company and/or its Affiliates as set forth herein, including the withholding of Stock and the withholding from the Grantee's wages/salary or other amounts payable to the Grantee.  All other Tax-Related Items related to the Restricted Stock Units and any Stock delivered in satisfaction thereof are the Grantee's sole responsibility.

9.         Other Tax Matters.

(a)        The Grantee expressly acknowledges that because this Award consists of an unfunded and unsecured promise by the Company to deliver Stock in the future, subject to the terms hereof, it is not possible to make a so-called “83(b) election” under U.S. federal tax laws with respect to the Award.

(b)        If, at the time of the Grantee’s termination of employment, the Grantee is a “specified employee,” as defined below, to the extent required by Section 409A, any and all amounts payable on account of the Grantee’s separation from service that constitute deferred compensation and would (but for this provision) be payable within six (6) months following the date of termination, shall instead be paid on the next business day following the expiration of such six (6) month period or, if earlier, upon the Grantee’s death.  For purposes of this Agreement, all references to “termination of employment” and correlative phrases shall be construed to require a “separation from service” (as defined in Treasury Regulations section 1.409A-1(h) after giving effect to the presumptions contained therein), and the term “specified employee” means an individual determined by the

Company to be a specified employee under Treasury Regulation section 1.409A-1(i).  Each payment made under this Agreement shall be treated as a separate payment and the right to a series of installment payments under this Agreement is to be treated as a right to a series of separate payments.

10.       Effect on Employment.  Neither the grant of the Restricted Stock Units, nor the delivery of Stock upon vesting of any portion thereof, will give the Grantee any right to be retained in the employ or service of the Company or any of its Affiliates, affect the right of the Company or any of its Affiliates to discharge or discipline such Grantee at any time, or affect any right of such Grantee to terminate his or her Employment at any time.

11.       Acknowledgements.  By accepting the Award, the Grantee agrees to be bound by, and agrees that the Award and the Restricted Stock Units are subject in all respects to, the terms of the Plan.  The Grantee further acknowledges and agrees that (i) this Agreement may be executed in two or more counterparts, each of which shall be an original and all of which together shall constitute one and the same instrument, (ii) this agreement may be executed and exchanged using facsimile, portable document format (PDF) or electronic signature, which, in each case, shall constitute an original signature for all purposes hereunder and (iii) such signature by the Company will be binding against the Company and will create a legally binding agreement when this Agreement is countersigned by the Grantee.

12.       Authorization to Release and Transfer Necessary Personal Information.   The Grantee hereby explicitly and unambiguously consents to the collection, use and transfer, in electronic or other form, of his or her personal data by and among, as applicable, the Company and the Affiliates for the exclusive purpose of implementing, administering and managing the Grantee’s participation in the Plan. The Grantee understands that the Company and the Affiliates may hold certain personal information about the Grantee including, but not limited to, the Grantee’s name, home address and telephone number, date of birth, social security number (or any other social or national identification number), salary, nationality, job title, number of Restricted Stock Units and/or Stock held and the details of all Restricted Stock Units or any other entitlement to Stock awarded, cancelled, vested, unvested or outstanding for the purpose of implementing, administering and managing the Grantee’s participation in the Plan (the “Data”).  The Grantee understands that the Data may be transferred to the Company or any of the Affiliates, or to any third parties assisting in the implementation, administration and management of the Plan, that these recipients may be located in the Grantee’s country or elsewhere, and that any recipient’s country (e.g., the United States) may have different data privacy laws and protections than the Grantee’s country.  The Grantee understands that he or she may request a list with the names and addresses of any potential recipients of the Data by contacting his or her local human resources representative.  The Grantee authorizes the recipients to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purpose of implementing, administering and managing his or her participation in the Plan, including any requisite transfer of such Data to a broker or other third party assisting with the administration of Restricted Stock Units under the Plan or with whom Stock acquired pursuant to the vesting of the Restricted Stock Units or cash from the sale of such Stock may be deposited.  Furthermore, the Grantee acknowledges and understands that the

transfer of the Data to the Company or the Affiliates or to any third parties is necessary for his or her participation in the Plan.  The Grantee understands that Data will be held only as long as is necessary to implement, administer and manage his or her participation in the Plan.  The Grantee understands that he or she may, at any time, view the Data, request additional information about the storage and processing of the Data, require any necessary amendments to the Data or refuse or withdraw the consents herein by contacting his or her local human resources representative in writing.  The Grantee further acknowledges that withdrawal of consent may affect his or her ability to vest in or realize benefits from the Restricted Stock Units, and his or her ability to participate in the Plan.  For more information on the consequences of refusal to consent or withdrawal of consent, the Grantee understands that he or she may contact his or her local human resources representative.

Finally, upon request of the Company or the Grantee’s employer, the Grantee agrees to provide an executed data privacy consent form (or any other agreements or consents that may be required by the Company and/or the Grantee’s employer) that the Company and/or the Grantee’s employer may deem necessary to obtain from the Grantee for the purpose of administering the Grantee’s participation in the Plan in compliance with the data privacy laws in the Grantee’s country, either now or in the future. The Grantee understands and agrees that the Grantee will not be able to participate in the Plan if the Grantee fails to provide any such consent or agreement requested by the Company and/or the Grantee’s employer.

13.       Electronic Delivery and Execution.  The Grantee hereby consents and agrees to electronic delivery of any documents that the Company may elect to deliver (including, but not limited to, plan documents, prospectus and prospectus supplements, grant or award notifications and agreements, account statements, annual and quarterly reports, and all other forms of communications) in connection with this and any other Award made or offered under the Plan. The Grantee understands that, unless revoked by the Grantee by giving written notice to the Company pursuant to the Plan, this consent will be effective for the duration of the Agreement. The Grantee also understands that he or she will have the right at any time to request that the Company deliver written copies of any and all materials referred to above. The Grantee hereby consents to any and all procedures the Company has established or may establish for an electronic signature system for delivery and acceptance of any such documents that the Company may elect to deliver, and agree that his or her electronic signature is the same as, and will have the same force and effect as, his or her manual signature. The Grantee consents and agrees that any such procedures and delivery may be affected by a third party engaged by the Company to provide administrative services related to the Plan.

14.       Appendix.  Notwithstanding any provision of the Agreement to the contrary, this Restricted Stock Unit grant and the Stock acquired under the Plan shall be subject to any and all special terms and provisions as set forth in the Appendix, if any, for the Grantee’s country of residence (and country of employment, if different).

15.       Severability.  The provisions of this Agreement are severable and if any one or more provisions are determined to be illegal or otherwise unenforceable, in whole or in part, the remaining provisions shall nevertheless be binding and enforceable.

[Signature page follows.]

IN WITNESS WHEREOF, the Company has caused this Agreement to be executed by its duly authorized officer.

COUNTRY APPENDIX

ADDITIONAL TERMS AND CONDITIONS TO RESTRICTED STOCK UNIT AGREEMENT

This Country Appendix (“Appendix”) includes the following additional terms and conditions that govern the Grantee’s Restricted Stock Unit Award for all Grantees that reside and/or work outside of the United States.

Notifications

This Country Appendix also includes information regarding exchange controls and certain other issues of which the Grantee should be aware with respect to the Grantee’s participation in the Plan.  The information is based on the securities, exchange control and other laws in effect in the respective countries as of February 2018.  Such laws are often complex and change frequently.  As a result, the Company strongly recommends that the Grantee not rely on the information in this Country Appendix as the only source of information relating to the consequences of the Grantee’s participation in the Plan because the information may be out of date at the time that the Restricted Stock Units vest, or Stock is delivered in settlement of the Restricted Stock Units, or the Grantee sells any Stock acquired under the Plan.

In addition, the information contained herein is general in nature and may not apply to the Grantee’s particular situation, and none of the Company, its Affiliates, nor the Administrator is in a position to assure the Grantee of a particular result.  Accordingly, the Grantee is advised to seek appropriate professional advice as to how the relevant laws in the Grantee’s country of residence and/or work may apply to the Grantee’s situation.

Finally, if the Grantee transfers employment after the Grant Date, or is considered a resident of another country for local law purposes following the Grant Date, the notifications contained herein may not be applicable to the Grantee, and the Administrator shall, in its discretion, determine to what extent the terms and conditions contained herein shall be applicable to the Grantee.

Terms and Conditions Applicable to All Non-U.S. Jurisdictions

English Language.  The Grantee acknowledges and agrees that it is the Grantee’s express intent that this Agreement, the Plan and all other documents, rules, procedures, forms, notices and legal proceedings entered into, given or instituted pursuant to the Restricted Stock Unit Award, be drawn up in English.  If the Grantee has received this Agreement, the Plan or any other rules, procedures, forms or documents related to the Restricted Stock Unit Award translated into a language other than English, and if the meaning of the translated version is different than the English version, the English version will control.

Repatriation; Compliance with Laws; Insider Trading.  The Grantee agrees, as a condition of the grant of the Restricted Stock Unit Award, to repatriate all payments attributable to the Award and/or cash acquired under the Plan (including, but not limited to, dividends, dividend equivalents, and any proceeds derived from the sale of the Stock acquired pursuant to the Agreement) in accordance with all foreign exchange rules and regulations applicable to Grantee.  The Company and the Administrator reserve the right to impose other requirements on Grantee’s participation in

the Plan, on the Restricted Stock Units and on any Stock acquired or cash payments made pursuant to the Agreement, to the extent the Company, its Affiliates or the Administrator determines it is necessary or advisable in order to comply with local law or to facilitate the administration of the Plan, and to require Grantee to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.  Further, the Grantee agrees to take any and all actions as may be required to comply with Grantee’s personal legal and tax obligations under all laws, rules and regulations applicable to the Grantee. Finally, depending on Grantee's or the Grantee’s broker’s country of residence or where the Stock is listed, Grantee may be subject to insider trading restrictions or market abuse laws, which may affect Grantee's ability to accept, acquire, sell or otherwise dispose of Stock, rights to Stock (e.g., restricted stock units) or rights linked to the value of Stock (e.g., phantom awards, futures) during such times as Grantee is considered to have “inside information” regarding the Company as defined by the laws or regulations in the Grantee's country.  Local insider trading laws and regulations may prohibit the cancellation or amendment or amendment of orders the Grantee placed before the Grantee possessed inside information. Furthermore, the Grantee could be prohibited from (i) disclosing the inside information to any third party (other than on a “need to know”) and (ii) “tipping” third parties or causing them otherwise to buy or sell securities. The Grantee should keep in mind third parties includes fellow employees. Any restrictions under these insider trading or market abuse laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable Company insider trading policy. Neither the Company, nor its Affiliates will be liable for any fines or penalties that Grantee may incur as a result of Grantee's failure to comply with any applicable laws.  Grantee should be aware that securities, exchange control, insider trading and other laws may change frequently and often without notice.  Grantee is hereby advised to confirm the legal obligations that may arise from Grantee's participation in the Plan with a qualified advisor.

Commercial Relationship.  The Grantee expressly recognizes that the Grantee’s participation in the Plan and the Company’s Award grant does not constitute an employment relationship between the Grantee and the Company.  The Grantee has been granted Restricted Stock Units as a consequence of the commercial relationship between the Company and the Employer, and the Employer is the Grantee’s sole employer.  Based on the foregoing, (a) the Grantee expressly recognizes the Plan and the benefits the Grantee may derive from participation in the Plan do not establish any rights between the Grantee and the Affiliate that employs the Grantee, (b) the Plan and the benefits the Grantee may derive from participation in the Plan are not part of the employment conditions and/or benefits provided by the Affiliate that employs the Grantee, and (c) any modifications or amendments of the Plan by the Company or the Administrator, or a termination of the Plan by the Company, shall not constitute a change or impairment of the terms and conditions of the Grantee’s employment with the Affiliate that employs the Grantee.

Private Placement.  The grant of the Award is not intended to be a public offering of securities in the Grantee’s country of residence and/or employment but instead is intended to be a private placement.  As a private placement, the Company has not submitted any registration statement, prospectus or other filings with the local securities authorities (unless otherwise required under local law), and the grant of the Restricted Stock Unit Award is not subject to the supervision of the local securities authorities.

Additional Acknowledgements.  The GRANTEE also acknowledges and agrees to the following:

    The Plan is established voluntarily by the Company, it is discretionary in nature, and it may be modified, amended, suspended or terminated by the Company at any time, to the extent permitted by the Plan.

    All decisions with respect to future Awards or other grants, if any, will be at the sole discretion of the Company.

    The future value of the Stock is unknown and cannot be predicted with certainty.

    The Award and the Stock subject to the Award, and the income and value of same, are not part of normal or expected compensation or salary for any purpose and are not intended to replace any pension rights or compensation.

    Grantee's participation in the Plan is voluntary.

    No claim or entitlement to compensation or damages arises from the forfeiture of the Award or any of the Restricted Stock Units, the termination of the Plan, or the diminution in value of the Restricted Stock Units or Stock, and the Grantee irrevocably releases the Company, its Affiliates, the Administrator and their affiliates from any such claim that may arise.

    The Award and the Stock subject to the Award, and the income and value of same, are not part of normal or expected compensation for purposes of calculating any severance, resignation, termination, redundancy, dismissal, end of service payments, bonuses, long-service awards, pension or retirement or welfare benefits or similar payments.

    Unless otherwise agreed with the Company in writing, the Award and the Stock subject to the Award, and the income and value of same, are not granted as consideration for, or in connection with, any service Grantee may provide as a director of the Company or its Affiliates.

    Neither the Company nor its Affiliates shall be liable for any foreign exchange rate fluctuation between Grantee's local currency and the U.S. Dollar that may affect the value of the Restricted Stock Units or of any amounts due to Grantee pursuant to the settlement of the Restricted Stock Units or the subsequent sale of any Stock acquired upon settlement.

    None of the Company, its Affiliates, nor the Administrator is providing any tax, legal or financial advice or making any recommendations regarding the Grantee’s participation in the Plan, the grant, vesting or settlement of the Grantee’s Restricted Stock Units, or the Grantee’s acquisition or sale of the Stock delivered in settlement of the Restricted Stock Units.  The Grantee is hereby advised to consult with his own personal tax, legal and financial advisors regarding his participation in the Plan before taking any action related to the Plan.

BELGIUM

Notifications

Exchange Control Information.  If Grantee is a Belgian resident, Grantee is required to report any taxable income attributable to the grant of the Restricted Stock Units on his or her annual tax return. In addition, the Grantee is required to report any securities (e.g., Stock) or bank accounts opened and maintained outside Belgium on his or her annual tax return. In a separate report, certain details regarding such foreign accounts (including the account number, bank name and country in which such account was opened) must be provided to the Central Contact Point of the National Bank of Belgium.

FRANCE

Notifications

Use of English Language.  Les parties reconnaissent avoir exigé la rédaction en anglais de la présente convention, ainsi que de tous documents exécutés, avis donnés et procédures judiciaires intentées, directement ou indirectement, relativement à ou suite à la présente convention.

Award Not French Qualified.  The Grantee understands and acknowledges that the Restricted Stock Units granted under this Agreement are not intended to qualify for specific tax and social security treatment pursuant to Sections L. 225-197-1 to L. 225-197-6 of the French Commercial Code, as amended.

Exchange Control Information. Grantee must declare to the customs and excise authorities any cash or securities he or she imports or exports without the use of a financial institution when the value of the cash or securities is equal to or exceeds €10,000.

Foreign Account / Assets Reporting Information.  If the Grantee retains Stock acquired under the Plan outside of France or maintains a foreign bank account, the Grantee is required to report such to the French tax authorities when filing the Grantee's annual tax return. Failure to comply could trigger significant penalties.

GERMANY

Notifications

Exchange Control Information.  Cross-border payments in excess of €12,500 must be reported monthly to the German Federal Bank.  If the Grantee uses a German bank to transfer a cross-border payment in excess of €12,500 in connection with the sale of the Stock acquired under the Plan, the bank will make the report for the Grantee.  Grantee is responsible for satisfying any applicable reporting obligation.

HONG KONG

Terms and Conditions

Warning:  The Restricted Stock Unit Award and any Stock issued pursuant to the settlement of the Restricted Stock Units do not constitute a public offering of securities under Hong Kong law and are available only to employees of the Company and its Affiliates.  The Agreement, the Plan, and any rules, procedures, forms or other incidental communication materials have not been prepared in accordance with and are not intended to constitute a “prospectus” for a public offering of securities under the applicable securities legislation in Hong Kong, nor have the documents been reviewed by any regulatory authority in Hong Kong.  The Award and any related documentation are intended only for the personal use of each eligible employee of the Company or its Affiliates and may not be distributed to any other person.  If the Grantee is in any doubt about any of the contents of the Agreement, the Plan, or any rules, procedures or forms, the Grantee should obtain independent professional advice.

Settlement of Restricted Stock Units.  In the event that any of the Restricted Stock Units are settled within six months of the Grant Date, the Grantee agrees that the Grantee (or his / her beneficiary) will not sell or otherwise dispose of any such Shares prior to the six-month anniversary of the Grant Date.

Wages.  The Restricted Stock Unit Award and Shares underlying the Restricted Stock Unit Award do not form part of the Grantee's wages for the purposes of calculating any statutory or contractual payments under Hong Kong law. The Company specifically intends that the Plan will not be an occupational retirement scheme for purposes of the Occupational Retirement Schemes Ordinance.

INDIA

Notifications

Exchange Control Information.  The Grantee understands that he or she must repatriate any proceeds from the sale of Stock and any cash dividends or dividend equivalents acquired under the Plan to India and convert the proceeds into local currency within 90 days or 180 days of receipt, respectively or such other period of time as may be required under applicable regulations.  The Grantee will receive a foreign inward remittance certificate (“FIRC”) from the bank where the Grantee deposits the foreign currency.  The Grantee should maintain the FIRC as evidence of the repatriation of funds in the event the Reserve Bank of India or the Employer requests proof of repatriation.  The Grantee is responsible for complying with applicable exchange control laws in India.

Foreign Account / Assets Reporting Information. The Grantee is required to declare any foreign bank accounts and any foreign financial assets (including Stock acquired under the Plan) in Grantee’s annual tax return. It is Grantee’s responsibility to comply with this reporting obligation and he or she should consult his or her personal tax advisor in this regard.

INDONESIA

Notifications

Exchange Control Information.  If the Grantee remits funds (including proceeds from the sale of Stock) into Indonesia, the Indonesian bank through which the transaction is made will submit a report of the transaction to Bank Indonesia for statistical reporting purposes.  For transactions of US$10,000 or more, a more detailed description of the transaction must be included in the report and the Grantee may be required to provide information about the transaction (e.g., the relationship between the Grantee and the transferor of the funds, the source of the funds, etc.) to the bank in order for the bank to complete the report. In addition, the Grantee may be required to provide Bank Indonesia with information on foreign exchange activities, which may include Stock held outside Indonesia, on a monthly basis. The reporting should be completed online through Bank Indonesia's website, by no later than the 15th day of the following month.

ITALY

Terms and Conditions

The following provision replaces Section 12 of the Agreement:

Data Privacy

Pursuant to Section 13 of the Legislative Decree no. 196/2003, the Grantee understands that his / her Employer, the Company and any subsidiary may hold certain personal information about the Grantee, including, but not limited to, the Grantee’s name, home address, email address and telephone number, email address, date of birth, social insurance number, passport number or other identification number, salary, nationality, job title, any shares or directorships held in the Company or any subsidiary, details of the Award, or any other entitlement to shares awarded, canceled, exercised, vested, unvested or outstanding in the Grantee’s favor and will process such data for the exclusive purpose of implementing, managing and administering the Plan (“Data”) and in compliance with applicable laws and regulations.

The Grantee also understands that providing the Company with Data is mandatory for compliance with local law and necessary for the performance of the Plan and this Agreement, which represents the legal basis for the collection, use, processing and transfer of the Data, and that the Grantee’s refusal to provide such Data would make it impossible for the Company to perform its contractual obligations and may affect the Grantee’s ability to participate in the Plan.  The Controller of personal data processing is Trinseo S.A. with its principal executive office address at 1000 Chesterbrook Boulevard, Suite 300, Berwyn, Pennsylvania 19312, USA and, pursuant to Legislative Decree no. 196/2003, its representative in Italy for privacy purposes is A.P.I. Applicazioni Plastiche Industriali S.p.A. with its registered address at Via Dante Alighieri n. 27, 36065 Mussolente (VI) Italy.

The Grantee understands that Data will not be publicized, but it may be accessible by the Employer and its internal and external personnel in charge of processing of such Data and by the data processor (the “Processor”), if any.  An updated list of Processors and other transferees of Data is available upon request from the Employer.  Furthermore, Data may be transferred to

banks, other financial institutions, or brokers involved in the management and administration of the Plan.  The Grantee understands that Data may also be transferred to the independent registered public accounting firm engaged by the Company.  The Grantee further understands that the Company and/or any subsidiary will transfer Data among themselves as necessary for the purpose of implementing, administering and managing the Grantee’s participation in the Plan, and that the Company and/or any subsidiary may each further transfer Data to third parties assisting the Company in the implementation, administration, and management of the Plan, including any requisite transfer of Data to a broker or other third party with whom the Grantee may elect to deposit any Stock acquired pursuant to the Award.  Such recipients may receive, possess, use, retain, and transfer Data in electronic or other form, for the purposes of implementing, administering, and managing the Grantee’s participation in the Plan.  The Grantee understands that these recipients may be acting as Controllers, Processors or persons in charge of processing, as the case may be, in accordance with local law and may be located in or outside the European Economic Area in countries such as in the United States that might not provide the same level of protection as intended under Italian data privacy laws.  Should the Company exercise its discretion in suspending all necessary legal obligations connected with the management and administration of the Plan, it will delete Data as soon as it has completed all the necessary legal obligations connected with the management and administration of the Plan.

The Grantee understands that Data processing related to the purposes specified above shall take place under automated or non-automated conditions, anonymously when possible, that comply with the purposes for which Data is collected and with confidentiality and security provisions as set forth by applicable laws and regulations, with specific reference to Legislative Decree no. 196/2003.

The processing activity, including communication, the transfer of Data abroad, including outside of the European Economic Area, as herein specified and pursuant to applicable laws and regulations, does not require the Grantee’s consent thereto as the processing is necessary to performance of contractual obligations related to the implementation, administration and management of the Plan.  The Grantee understands that, pursuant to Section 7 of the Legislative Decree no. 196/2003, the Grantee has the right to, including but not limited to, access, delete, update, correct, ask for rectification of Data or terminate, for legitimate reason, the Data processing. The Grantee also understands that he or she has the right to Data portability and to lodge a complaint with the Italian supervisory authority. The Grantee should contact the Employer in this regard.

Furthermore, the Grantee is aware that Data will not be used for direct marketing purposes.  In addition, Data provided can be reviewed and questions or complaints can be addressed by contacting the Grantee’s human resources department.

Plan Document Acknowledgment. The Grantee further acknowledges that he or she has read and specifically and expressly approves the Data Privacy section above as well as the following sections of the Agreement Section 1 (“Grant of Restricted Stock Units”); Section 4 (“Vesting”); Section 5 (“Delivery of Stock”), Section 6 (“Forfeiture; Recovery of Compensation”); Section 7 (“Nontransferability”); Section 8 (“Responsibility for Taxes & Withholding”); Section 13

(“Imposition of Other Requirements”); Country Appendix  (“English Language”;  “Additional Acknowledgements”) and the “Data Privacy” provision included immediately above.

Notifications

Tax on Foreign Financial Assets.  Individuals resident in Italy are subject to a tax on the value of financial assets held outside of Italy. The taxable amount will be the fair market value of the financial assets (including Stock) on December 31 or on the last day the Stock were held (the tax is levied in proportion to the number of days the shares were held during the calendar year). The tax is assessed as part of the annual tax return.

NETHERLANDS

Notifications

Securities Law Information.  The Grantee should be aware of Dutch insider trading rules which may impact the sale of Stock issued to the Grantee upon settlement of the Restricted Stock Units.  In particular, the Grantee may be prohibited from effectuating certain transactions if the Grantee has inside information about the Company.  Under Article 5:56 of the Dutch Financial Supervision Act, anyone who has “insider information” related to an issuing company is prohibited from effectuating a transaction in securities in or from the Netherlands.  “Insider information” is defined as knowledge of specific information concerning the issuing company to which the securities relate or the trade in securities issued by such company, which has not been made public and which, if published, would reasonably be expected to affect the share price, regardless of the development of the price.  The insider could be any employee of a Affiliate in the Netherlands who has inside information as described herein.  Given the broad scope of the definition of inside information, certain employees working at the Company’s Affiliate in the Netherlands may have inside information and, thus, would be prohibited from effectuating a transaction in securities in the Netherlands at a time when they have such inside information.  If the Grantee is uncertain whether the insider-trading rules apply to the Grantee, the Grantee should consult his personal legal advisor.

SINGAPORE

Notifications

Securities Law Information. The Restricted Stock Units are being granted pursuant to the “Qualifying Person”  exemption under section 273(1)(f) of the Securities and Futures Act (Chapter 289, 2006 Ed.) (“SFA”), under which it is exempt from the prospectus and registration requirements and is not made with a view to the underlying shares being subsequently offered for sale to any other part.  The Plan has not been and will not be lodged or registered as a prospectus with the Monetary Authority of Singapore and is not regulated by any financial supervisory authority pursuant to any legislation in Singapore. Accordingly, statutory liability under the SFA in relation to the content of prospectuses would not apply.  The Grantee should note that the Grantee’s Restricted Stock Units are subject to section 257 of the SFA and the Grantee should not make any subsequent sale in Singapore, or any offer of such subsequent sale of Stock unless such sale or offer in Singapore is made pursuant to the exemptions under Part XIII Division (1) Subdivision (4) (other than section 280) of the SFA.

Chief Executive Officer and Director Notification.  If the Grantee is the chief executive officer (“CEO”) or a director (including alternate director, substitute associate and shadow director) of a Singapore subsidiary, the Grantee must notify the Singapore subsidiary in writing within two (2) business days of (i) becoming the registered holder of or acquiring an interest (e.g., Restricted Stock Units, Stocks, etc.) in the Company or any of its subsidiary, or becoming the CEO, alternate director, substitute director or shadow director (as the case may be), whichever occurs last, or (ii) any change in a previously disclosed interest (e.g., sale of Stocks).

SPAIN

Notifications

Securities Law Information.   No “offer of securities to the public,” within the meaning of Spanish law, has taken place or will take place in the Spanish territory in connection with the Plan or Restricted Stock Unit.  The Plan, the Agreement (including this Appendix) and any other documents evidencing the grant of the Restricted Stock Units have not been, nor will they be, registered with the Comisión Nacional del Mercado de Valores (the Spanish securities regulator), and none of those documents constitutes a public offering prospectus.

Exchange Control Information.  The acquisition, ownership and sale of Stock under the Plan must be declared for statistical purposes to the Spanish Dirección General de Comercio e Inversiones (the “DGCI”), the Bureau for Commerce and Investments, which is a department of the Ministry of Economy and Competitiveness.  Generally, the declaration must be made in January for Stock acquired or sold during (or owned as of December 31 of) the prior year.  The Grantee may also be required to declare any securities accounts (including brokerage accounts held abroad) depending on the value of the transactions during the relevant year or the balances in such accounts as of December 31 of the relevant year.

When receiving foreign currency payments derived from the ownership of Stock (i.e., dividends or sale proceeds) exceeding €50,000, the Grantee must inform the financial institution receiving the payment of the basis upon which such payment is made.  The Grantee will need to provide the institution with the following information: (i) the Grantee’s name, address, and tax identification number; (ii) the name and corporate domicile of the Company; (iii) the amount of the payment; the currency used; (iv) the country of origin; (v) the reasons for the payment; and (vi) further information that may be required.  After such foreign currency payments are initially reported, the reporting obligation will only apply for subsequent years if the value of any previously-reported rights or assets increases by more than €20,000.  If reporting is required, the Grantee must file the report on form 720 by March 31 following the end of the relevant year.

The Grantee is solely responsible for complying with any exchange control or other reporting requirement that may apply to the Grantee as a result of participation in the Plan, the acquisition and/or sale of the Stock and/or the transfer of funds in connection with the award.  The Grantee should consult his or her legal advisor to confirm the current reporting requirements when he or she acquires Stock, sells Stock and/or transfers any funds related to the Plan to Spain.

Terms and Conditions

Nature of Award.  In accepting the grant of Restricted Stock Units, the Grantee acknowledges that he or she consents to participation in the Plan and has received a copy of the Plan.

The Grantee understands that the Company has unilaterally, gratuitously and discretionally decided to grant Restricted Stock Units under the Plan to individuals who may be employees of the Company or its Affiliates throughout the world.  The decision is a limited decision that is entered into upon the express assumption and condition that any grant will not economically or otherwise bind the Company or any of its Affiliates on an ongoing basis.  Consequently, the Grantee understands that the Restricted Stock Units are granted on the assumption and condition that the Restricted Stock Units and the Stock acquired upon lapse of the restrictions relating to the Restricted Stock Units shall not become a part of any employment contract (either with the Company or any of its Affiliates) and shall not be considered a mandatory benefit, salary for any purposes (including severance compensation) or any other right whatsoever.  In addition, the Grantee understands that this grant would not be made to the Grantee but for the assumptions and conditions referred to above; thus, the Grantee acknowledges and freely accepts that should any or all of the assumptions be mistaken or should any of the conditions not be met for any reason, then any grant of Restricted Stock Units shall be null and void.

SWITZERLAND

Notifications

Securities Law Information.  The Restricted Stock Units are not intended to be publicly offered in or from Switzerland.  Neither this document nor any other materials relating to the Plan (i) constitutes a prospectus as such term is understood pursuant to article 652a of the Swiss Code of Obligations (ii) may be publicly distributed nor otherwise made publicly available in Switzerland  or (iii) have been or will be filed with, approved or supervised by any Swiss regulatory authority, including the Swiss Financial Market Authority (FINMA).

TAIWAN

Notifications

Exchange Control Information.  The Grantee may acquire and remit foreign currency (including proceeds from the sale of Stock) up to US$5,000,000 per year without justification.  If the transaction amount is TWD500,000 or more in a single transaction, the Grantee must submit a Foreign Exchange Transaction Form.  If the transaction amount is US$500,000 or more in a single transaction, the Grantee must also provide supporting documentation to the satisfaction of the remitting bank.

TURKEY

Notifications

Securities Law Information.  Under Turkish law, the Grantee is not permitted to sell any Stock under the Plan in Turkey.  The Stock is currently traded on the New York Stock Exchange (“NYSE”), under the ticker symbol “TSE” and the Stock may be sold through this exchange.

UNITED KINGDOM

Terms and Conditions

Tax Withholding and National Insurance Contributions Acknowledgement.  Notwithstanding any provisions in the Agreement, the Grantee agrees that he or she is liable for all Tax-Related Items and hereby covenants to pay all such Tax-Related Items, as and when requested by the Company, the Employer, or by Her Majesty’s Revenue and Customs (“HMRC”) or any other tax authority or other relevant authority.  The Grantee also agrees to indemnify and keep indemnified the Company and the Employer against any Tax-Related Items that they are required to pay or withhold, or have paid or will pay, to HMRC (or any other tax authority or other relevant authority) on the Grantee’s behalf.

Notwithstanding the foregoing, if the Grantee is a director or executive officer of the Company (within the meaning of Section 13(k) of the U.S. Securities Exchange Act of 1934, as amended), the Grantee understands that he or she may not be able to indemnify the Company or the Grantee for the amount of any income tax not collected or paid by the Grantee because the indemnification could be considered a loan.  In this case, the income tax not collected or paid may constitute a benefit to the Grantee on which additional income tax and national insurance contributions (“NICs”) may be payable.  The Grantee will be responsible for reporting and paying any income tax due on this additional benefit directly to HMRC under the self-assessment regime and for paying to the Company or the Employer, as applicable, any employee NICs due on this additional benefit, which the Company or the Employer may recover from the Grantee by any of the means referred to in Section 8 of the Agreement.

Exclusion of Claim.  The Grantee acknowledges and agrees that the Grantee will have no entitlement to compensation or damages insofar as such entitlement arises or may arise from the Grantee’s ceasing to have rights under or to be entitled to the Restricted Stock Units, whether or not as a result of termination of Grantee’s Employment (whether the termination is in breach of contract or otherwise), or from the loss or diminution in value of the Restricted Stock Units.  Upon the grant of the Restricted Stock Units, the Grantee shall be deemed to have waived irrevocably any such entitlement.

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