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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 14, 2023

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 14, 2023, Trinseo PLC (the “Company”) held its Annual General Meeting of Shareholders. A total of 30,763,172 ordinary shares were present or represented by proxy, which accounted for approximately 87.5% of the shares entitled to vote at the Annual General Meeting. The Company’s shareholders voted on the following seven 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 2024 annual general meeting of shareholders by the votes set forth in the table below:

Name

For

Against

Abstain

Broker Non-Votes

K’Lynne Johnson

27,542,299

583,967

22,347

2,614,559

Joseph Alvarado

27,422,118

713,440

13,055

2,614,559

Frank Bozich

27,892,015

216,875

39,723

2,614,559

Victoria Brifo

27,881,430

254,747

12,436

2,614,559

Jeffrey Cote

27,922,531

213,542

12,540

2,614,559

Pierre-Marie De Leener

27,884,431

251,636

12,546

2,614,559

Jeanmarie Desmond

27,910,976

225,189

12,448

2,614,559

Matthew Farrell

27,889,955

246,091

12,567

2,614,559

Sandra Beach Lin

27,638,185

497,878

12,550

2,614,559

Henri Steinmetz

27,911,470

216,675

20,468

2,614,559

Mark Tomkins

27,641,973

494,076

12,564

2,614,559

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

26,802,766

1,310,850

34,997

2,614,559

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, 2023, 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

30,514,060

245,323

3,789

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

30,137,502

612,864

12,806

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:

For

Against

Abstain

30,532,641

201,204

29,327

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

30,577,734

156,343

29,095

Annual General Meeting Proposal Seven: Approval of Amendment to Omnibus Incentive Plan

The Company’s shareholders approved the amendment to the Company’s Omnibus Incentive Plan, by the votes set forth in the table below. The amended Omnibus Incentive Plan is attached hereto as Exhibit 10.1.

For

Against

Abstain

Broker Non-Votes

21,308,657

6,809,553

30,403

2,614,559

ITEM 9.01

Exhibits.

10.1

Trinseo PLC Amended and Restated 2014 Omnibus Incentive Plan (as amended)

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 16, 2023