Washington, D.C. 20549



Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 21, 2023

Trinseo PLC

(Exact name of registrant as specified in its charter)




(State or other jurisdiction
of incorporation or organization)

File Number)

(I.R.S. Employer
Identification Number)

440 East Swedesford Road, Suite 301,

Wayne, Pennsylvania 19087

(Address of principal executive offices, including zip code)

(610) 240-3200

(Telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class

Trading symbol(s)

Name of Each Exchange on which registered

Ordinary Shares, par value $0.01 per share


New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

ITEM 5.02

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On September 21, 2023, Trinseo PLC (the “Company”) appointed Roger Greene, age 47, as Vice President, Controller and Principal Accounting Officer of the Company, effective September 25, 2023. David Stasse, the Company’s Executive Vice President and Chief Financial Officer, will no longer serve as interim principal accounting officer following Mr. Greene’s appointment.

Prior to joining the Company, Mr. Greene served as Vice President, Chief Audit Executive of Corteva Agriscience leading the internal audit function. Mr. Greene also served as Global Business Controller for the Agriculture Division of DuPont from 2016 to 2019, and held leadership roles in DuPont’s corporate accounting and controllership groups. Before joining DuPont, Mr. Greene worked at PricewaterhouseCoopers in its Assurance practice. Mr. Greene holds a bachelor’s degree in accounting from Pennsylvania State University and is a Certified Public Accountant.

No family relationship exists between Mr. Greene and any of the Company’s directors or other executive officers. There are no arrangements or understandings between Mr. Greene and any other person pursuant to which he was selected as an officer, and there are no family relationships between Mr. Greene and any of the Company’s directors or executive officers. Mr. Greene has no direct or indirect material interest in any existing or currently proposed transaction that would require disclosure under Item 404(a) of Regulation S-K.

ITEM 9.01Exhibits.


Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101)


Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.



/s/ Angelo Chaclas


Angelo Chaclas


Senior Vice President and Chief Legal Officer

Date: September 22, 2023

Document and Entity Information
Sep. 21, 2023
Document and Entity Information [Abstract]  
Document Type 8-K
Document Period End Date Sep. 21, 2023
Entity File Number 001-36473
Entity Registrant Name Trinseo PLC
Entity Incorporation, State or Country Code L2
Entity Tax Identification Number 00-0000000
Entity Address State Or Province PA
Entity Address, Address Line One 440 East Swedesford Road
Entity Address, Adress Line Two Suite 301
Entity Address, City or Town Wayne
Entity Address, Postal Zip Code 19087
City Area Code 610
Local Phone Number 240-3200
Title of 12(b) Security Ordinary Shares, par value $0.01 per share
Trading Symbol TSE
Security Exchange Name NYSE
Entity Emerging Growth Company false
Entity Central Index Key 0001519061
Amendment Flag false
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false

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