Document:

April 23, 2010

	

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	Exhibit 10.2

	
	Trinseo PLC
76 Sir John Rogerson’s Quay
Dublin 2 
D02 FX51, Ireland

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May 9, 2022
David Stasse
E.V.P., Chief Financial Officer
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Dear Dave,
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We are pleased to confirm a change in your Change of Control benefit under your employment contract with Trinseo PLC or its affiliate.  Basically, the change increases the severance amount from 18 months to 24 months provided all other conditions of this benefit are met.  More particularly, please note that the double trigger elements both still apply.
​
A side-by-side comparison of the change is provided below:
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	Current Change in Control Severance - Section 8(e)
	New Change in Control Severance - Section 8(e)

	(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(d) hereof, or (y) by the Executive for Good Reason, in either case, during the Employment Term and 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)(i), (ii) and (iii), except that in lieu of receiving the Severance Amount, as applicable, in installments as contemplated under Section 8(d)(ii), the Executive shall receive a lump sum payment equal to the applicable 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.
	(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(d) hereof, or (y) by the Executive for Good Reason, in either case, during the Employment Term and 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)(i), (ii) and (iii), except that: (i) the Severance Amount shall be two (2.0) multiplied by the annual sum of the Executive’s Base Salary and Target Bonus in effect for the then-current year of termination, and (ii)  in lieu of receiving the Severance Amount, as applicable, in installments; the Executive shall receive a lump sum payment equal to the applicable 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.

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By way of this letter amendment, we propose deleting current Section 8(e)(i) and replacing it with new Section 8(e)(i). There are no other changes to your employment contract.  All other terms and conditions remain unchanged. 
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Please return your acceptance at your earliest convenience.
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Best regards,
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	Signature:  /s/ Frank A. Bozich
	Signature:  /s/ Paula Cooney

	Name:Frank A. Bozich
	Name:Paula Cooney

	Title:President & Chief Executive Officer
	Title:S.V.P., Chief Human Resources Officer

	Date:5-11-2022
	Date:5-11-2022

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	Trinseo PLC
76 Sir John Rogerson’s Quay
Dublin 2 
D02 FX51, Ireland

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I have read this letter amendment, understand it, and agree to the terms set forth above:
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Date: 5/15/2022Signature: /s/ David Stasse
David Stasse

Page 2 of 2
​April 23, 2010

	

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	Exhibit 10.3

	
	Trinseo PLC
76 Sir John Rogerson’s Quay
Dublin 2 
D02 FX51, Ireland

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May 9, 2022
Angelo N. Chaclas
S.V.P., Chief Legal Officer
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Dear Angelo,
​
We are pleased to confirm a change in your Change of Control benefit under your employment contract with Trinseo PLC or its affiliate.  Basically, the change increases the severance amount from 18 months to 24 months provided all other conditions of this benefit are met.  More particularly, please note that the double trigger elements both still apply.
​
A side-by-side comparison of the change is provided below:
​
	Current Change in Control Severance - Section 8(e)
	New Change in Control Severance - Section 8(e)

	(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(d) hereof, or (y) by the Executive for Good Reason, in either case, during the Employment Term and 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)(i), (ii) and (iii), except that in lieu of receiving the Severance Amount, as applicable, in installments as contemplated under Section 8(d)(ii), the Executive shall receive a lump sum payment equal to the applicable 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.
	(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(d) hereof, or (y) by the Executive for Good Reason, in either case, during the Employment Term and 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)(i), (ii) and (iii), except that: (i) the Severance Amount shall be two (2.0) multiplied by the annual sum of the Executive’s Base Salary and Target Bonus in effect for the then-current year of termination, and (ii)  in lieu of receiving the Severance Amount, as applicable, in installments; the Executive shall receive a lump sum payment equal to the applicable 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.

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By way of this letter amendment, we propose deleting current Section 8(e)(i) and replacing it with new Section 8(e)(i). There are no other changes to your employment contract.  All other terms and conditions remain unchanged. 
​
Please return your acceptance at your earliest convenience.
​
Best regards,
​
	

	

	Signature:  /s/ Frank A. Bozich
	Signature:  /s/ Paula Cooney

	Name:Frank A. Bozich
	Name:Paula Cooney

	Title:President & Chief Executive Officer
	Title:S.V.P., Chief Human Resources Officer

	Date:5-11-2022
	Date:5-11-2022

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	Trinseo PLC
76 Sir John Rogerson’s Quay
Dublin 2 
D02 FX51, Ireland

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	​

​

I have read this letter amendment, understand it, and agree to the terms set forth above:
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Date: 5/13/2022Signature: /s/ Angelo N. Chaclas
Angelo N. Chaclas

Page 2 of 2
​April 23, 2010

	

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	Exhibit 10.4

	
	Trinseo PLC
76 Sir John Rogerson’s Quay
Dublin 2 
D02 FX51, Ireland

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May 9, 2022
Andre Lanning
S.V.P., Chief Commercial Officer
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Dear Andre, 
​
We are pleased to confirm a change in your Change of Control benefit under your employment contract with Trinseo PLC or its affiliate.  Basically, the change increases the severance amount from 18 months to 24 months provided all other conditions of this benefit are met.  More particularly, please note that the double trigger elements both still apply.
​
A side-by-side comparison of the change is provided below:
​
	Current Change in Control Severance - Section 7(d)
	New Change in Control Severance - Section 7(d)

	(i)(i)          This Section 7(d) shall apply if the Executive's employment by the Company is terminated (x) by the Company other than for Cause, or (y) by the Executive for good reason as defined in art. 340c para 2 CO, 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 7(c) hereof, except that in lieu of receiving the Severance Amount in installments as contemplated under Section 7(c)(ii) hereof, the Executive shall receive a lump sum payment equal to the Severance Amount on the date of such termination.
	(i)This Section 7(d) shall apply if the Executive's employment by the Company is terminated (x) by the Company other than for Cause, or (y) by the Executive for good reason as defined in art. 340c para 2 CO, 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 thebenefits set forth in Section 7(c) hereof, except that (i) the Severance Amount shall be two (2.0) multiplied by the annual sum of the Executive’s Base Salary and Target Bonus in effect for the then-current year of termination, and (ii)  in lieu of receiving the Severance Amount in installments as contemplated under Section 7(c)(ii) hereof, the Executive shall receive a lump sum payment equal to the Severance Amount on the date of such termination. 
​

​
By way of this letter amendment, we propose deleting current Section 7(d)(i) and replacing it with new Section 7(d)(i). There are no other changes to your employment contract.  All other terms and conditions remain unchanged. 
​
Please return your acceptance at your earliest convenience.
​
Best regards,
​
	

	

	Signature:  /s/ Frank A. Bozich
	Signature:  /s/ Paula Cooney

	Name:Frank A. Bozich
	Name:Paula Cooney

	Title:President & Chief Executive Officer
	Title:S.V.P., Chief Human Resources Officer

	Date:5-20-2022
	Date:5-20-2022

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<REMAINDER OF PAGE INTENTIALLY BLANK – SIGNATURE PAGE TO FOLLOW>
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	Trinseo PLC
76 Sir John Rogerson’s Quay
Dublin 2 
D02 FX51, Ireland

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I have read this letter amendment, understand it, and agree to the terms set forth above:
​
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Date: 5/23/2022Signature: /s/ Andre Lanning
Andre Lanning

Page 2 of 2
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