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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): June 26, 2024

Trinseo PLC

(Exact name of registrant as specified in its charter)

Ireland

001-36473

N/A

(State or other jurisdiction
of incorporation or organization)

(Commission
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

TSE

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 5.07

Submission of Matters to a Vote of Security Holders.

On June 26, 2024, Trinseo PLC (the “Company”) held its Annual General Meeting of Shareholders. A total of 30,468,682 ordinary shares were present or represented by proxy, which accounted for approximately 86% of the shares entitled to vote at the Annual General Meeting. The Company’s shareholders voted on the following six proposals and cast their votes as set forth below.

Annual General Meeting Proposal One: Election of Eleven Directors

The Company’s shareholders approved the election of eleven director nominees to serve a term expiring at the end of the 2025 annual general meeting of shareholders by the votes set forth in the table below:

Name

For

Against

Abstain

Broker Non-Votes

K’Lynne Johnson

24,879,047

1,046,888

13,895

4,528,852

Joseph Alvarado

24,917,709

1,016,863

5,258

4,528,852

Frank Bozich

25,345,732

576,548

17,550

4,528,852

Victoria Brifo

25,280,046

654,273

5,511

4,528,852

Jeffrey Cote

25,006,971

926,439

6,420

4,528,852

Pierre-Marie De Leener

25,264,526

669,197

6,107

4,528,852

Jeanmarie Desmond

25,325,722

608,000

6,108

4,528,852

Matthew Farrell

25,281,216

652,383

6,231

4,528,852

Sandra Beach Lin

25,115,914

817,820

6,096

4,528,852

Henri Steinmetz

25,383,661

546,561

9,608

4,528,852

Mark Tomkins

25,098,906

835,095

5,829

4,528,852

Annual General Meeting Proposal Two: Approval, on an Advisory Basis, of the Company’s Named Executive Officers Compensation

The Company’s shareholders approved, on an advisory basis, the compensation paid to the Company’s named executive officers by the votes set forth in the table below:

For

Against

Abstain

Broker Non-Votes

24,740,670

1,190,312

8,848

4,528,852

Annual General Meeting Proposal Three: Ratification of the Appointment of the Company’s Independent Registered Public Accounting Firm

The Company’s shareholders ratified the audit committee’s appointment of PricewaterhouseCoopers LLP to be the Company’s independent registered public accounting firm for the year ending December 31, 2024, and to authorize, by binding vote, the Audit Committee of the Board to set its auditors’ remuneration by the votes set forth in the table below:

For

Against

Abstain

29,952,247

511,241

5,194

Annual General Meeting Proposal Four: Approval of Authority to Issue Shares

The Company’s shareholders approved the grant of authority of the Company’s Board of Directors to issue shares, by the votes set forth in the table below:

For

Against

Abstain

27,638,148

2,807,099

23,435

Annual General Meeting Proposal Five: Approval of Authority to Opt Out of Statutory Pre-emption Rights

The Company’s shareholders approved the authority of the Company’s Board of Directors to opt out of statutory pre-emption rights, with respect to up to 10% of issued share capital, by the votes set forth in the table below:

27,363,7093,079,58125,392

For

Against

Abstain

27,363,709

3,079,581

25,392

Annual General Meeting Proposal Six: Approval of Price Range for Re-issuance of Treasury Shares

The Company’s shareholders approved the price range for the Company’s re-issuance of treasury shares, as described in the proxy statement, by the votes set forth in the table below:

For

Against

Abstain

27,842,893

2,596,723

29,066

ITEM 9.01

Exhibits.

104

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

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 PLC

By:

/s/ Angelo Chaclas

Name:

Angelo Chaclas

Title:

Senior Vice President and Chief Legal Officer

Date: June 26, 2024