UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d)
of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 7, 2019

Trinseo S.A.
(Exact name of registrant as specified in its charter)

					
Luxembourg		001-36473		N/A	
(State or other jurisdiction
of incorporation or organization)		(Commission
File Number)		(I.R.S. Employer
Identification Number)	

1000 Chesterbrook Boulevard, Suite 300,
Berwyn, Pennsylvania 19312
(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))	
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. ☐
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		TSE		New York Stock Exchange	

ITEM 8.01  Other Events.

Trinseo S.A. (the “Company”) will hold an Extraordinary General Meeting of Shareholders on November 20, 2019 (the “Extraordinary Meeting”) in the Grand Duchy of Luxembourg for shareholders of record as of October 18, 2019.

Each shareholder who plans to attend the Company’s Extraordinary Meeting in person is required to notify the Company in accordance with the Company’s amended and restated articles of association. Any such notices to attend the Extraordinary Meeting should be directed to the Company’s Corporate Secretary at the principal executive offices of the Company:

Attn:  Corporate Secretary – Notification to Attend Extraordinary Meeting
Trinseo S.A.
1000 Chesterbrook Boulevard, Suite 300
Berwyn, Pennsylvania 19312
The Company anticipates that it will print and mail to shareholders of record as of October 18, 2019 the Company’s proxy statement for the Extraordinary Meeting on or about November 1, 2019.

SIGNATURE
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.

	TRINSEO S.A.	
			
	By:	/s/ Angelo N. Chaclas	
	Name:	Angelo N. Chaclas	
	Title:	Senior Vice President, Chief Legal Officer,	
		Chief Compliance Officer & Corporate	
		Secretary	
			
Date: October 7, 2019