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Trinseo PLC (TSEOQ) sets Sept 23, 2026 annual meeting in Pa

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
8-K

Rhea-AI Filing Summary

Trinseo PLC plans to hold its annual general meeting of shareholders on September 23, 2026 at 8:30 a.m. EST. Shareholders of record as of July 30, 2026 will be entitled to participate.

The meeting will take place at the company’s headquarters at 440 East Swedesford Road, Suite 301, Wayne, Pennsylvania 19087, with shareholders in Ireland able to join via audio and video link at McCann FitzGerald LLP in Dublin. Shareholders who plan to attend must register in advance, with further details to be provided in the company’s proxy statement.

Positive

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Item 8.01 Other Events Other
Voluntary disclosure of events the company deems important to shareholders but not covered by other items.
Annual Meeting Date September 23, 2026 Scheduled date of the annual general meeting of shareholders
Record Date July 30, 2026 Shareholders of record as of this date may participate in the meeting
Meeting Time 8:30 a.m. EST Scheduled start time of the annual general meeting on September 23, 2026
annual general meeting of shareholders regulatory
"plans to hold its annual general meeting of shareholders on September 23, 2026"
shareholders of record regulatory
"for shareholders of record as of July 30, 2026"
Shareholders of record are the people officially listed as owners of a company's stock on a specific date. This matters because only these shareholders are entitled to receive dividends or vote at company meetings. It's like being on the official guest list for a party—you get to enjoy the perks and have a say.
proxy statement regulatory
"Additional details about registration and attendance ... in our proxy statement"
A proxy statement is a document companies send to shareholders ahead of a meeting that lays out the items up for a vote—like who will sit on the board, executive pay, and major corporate decisions—and provides background so shareholders can decide how to cast their votes or appoint someone to vote for them. Think of it as an agenda plus a ballot and briefing notes, important because the outcomes can change control, strategy, and value.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

When is Trinseo PLC (TSEOQ) holding its 2026 annual general meeting?
Trinseo PLC will hold its annual general meeting of shareholders on September 23, 2026 at 8:30 a.m. EST. The meeting will occur at the company’s headquarters in Wayne, Pennsylvania, as disclosed in the Form 8-K.

What is the record date for Trinseo PLC (TSEOQ) shareholders for the 2026 annual meeting?
The record date is July 30, 2026. Shareholders of Trinseo PLC who are on the company’s books as of that date will be entitled to participate in and vote at the annual general meeting scheduled for September 23, 2026.

Where will Trinseo PLC (TSEOQ) hold its 2026 annual general meeting?
The 2026 annual general meeting will be held at Trinseo PLC’s headquarters, 440 East Swedesford Road, Suite 301, Wayne, Pennsylvania 19087. This physical location is specified as the meeting venue for shareholders in the United States.

How can Trinseo PLC (TSEOQ) shareholders in Ireland participate in the 2026 annual meeting?
Shareholders in Ireland may participate via audio and video link at McCann FitzGerald LLP, Riverside One, Sir John Rogerson's Quay, Grand Canal Dock, Dublin 2, D02 X576, Ireland. This provides a local access point for Ireland-based shareholders.

Is advance registration required to attend Trinseo PLC (TSEOQ)’s 2026 annual meeting?
Yes. Shareholders who plan to attend the annual general meeting will be required to register in advance. Additional information on how to register and attend will be provided in Trinseo PLC’s forthcoming proxy statement.

Where will details on registration for Trinseo PLC (TSEOQ)’s annual meeting be provided?
Further details about registration and attendance for Trinseo PLC’s annual general meeting will be included in the company’s proxy statement. Shareholders are directed there for specific instructions on how to register and participate.
0001519061false00-000000000015190612026-07-172026-07-17

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

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Date of Report (Date of earliest event reported): July 17, 2026

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Trinseo PLC

(Exact name of registrant as specified in its charter)

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​

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Ireland

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001-36473

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N/A

(State or other jurisdiction
of incorporation or organization)

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(Commission
File Number)

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(I.R.S. Employer
Identification Number)

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440 East Swedesford Road, Suite 301,

Wayne, Pennsylvania 19087

(Address of principal executive offices, including zip code)

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(610) 240-3200

(Telephone number, including area code)

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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):

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☐

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:

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​

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Title of Each Class

Trading symbol(s)

Name of Each Exchange
on which registered

Ordinary Shares, par value $0.01 per share

TSEOQ

N/A

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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).

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Emerging growth company ☐

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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. ☐

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ITEM 8.01Other Events.

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Trinseo PLC (the “Company”) will hold its annual general meeting of shareholders on September 23, 2026 at 8:30 a.m. EST (the “Annual Meeting”) for shareholders of record as of July 30, 2026. The Annual Meeting will be held at the Company’s headquarters at 440 East Swedesford Road, Suite 301, Wayne, Pennsylvania 19087. The Company’s shareholders in Ireland may participate in the Annual Meeting by audio and video link at McCann FitzGerald LLP, Riverside One, Sir John Rogerson's Quay, Grand Canal Dock, Dublin 2, D02 X576, Ireland. Shareholders who plan to attend the Annual Meeting will be required to register in advance. Additional details about registration and attendance at the Annual Meeting will be provided in our proxy statement.

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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.

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TRINSEO PLC

By:

/s/ Angelo Chaclas

Name:

Angelo Chaclas

Title:

Senior Vice President and Chief Legal Officer

Date: July 17, 2026

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Source: View Original Filing on SEC EDGAR

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