Trinseo PLC filed a Form 8-K on November 9, 2026, disclosing the issuance of a press release announcing its financial results for the third quarter and year ended September 30, 2026.

Key Highlights

  • Reporting period: Third quarter and year ended September 30, 2026, according to the filing.
  • Press release: Trinseo PLC issued a press release on November 9, 2026, announcing its financial results, furnished as Exhibit 99.1.
  • Investor presentation: The company disclosed it is making available an investor presentation on its website, furnished as Exhibit 99.2.
  • Signatory: The filing was signed by David Stasse, Executive Vice President and Chief Financial Officer, on November 9, 2026.
  • Trading symbol: Ordinary Shares, par value $0.01 per share, are listed under trading symbol TSEOF, with the name of exchange listed as N/A in the filing.

Trinseo PLC Furnishes Q3 2026 Earnings Press Release and Investor Presentation

Trinseo PLC, a public limited company incorporated under the laws of Ireland and headquartered at 440 East Swedesford Road, Suite 301, Wayne, Pennsylvania 19087, filed a current report on November 9, 2026, under Item 2.02 (Results of Operations and Financial Condition). According to the filing, the company issued a press release on that date announcing its financial results for the third quarter and year ended September 30, 2026.

The filing states that a copy of the press release is furnished as Exhibit 99.1, and that an investor presentation dated November 9, 2026, is furnished as Exhibit 99.2 and made available on the company's website. The filing explicitly notes that the information contained in the report and accompanying exhibits "shall not be deemed filed for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing."

David Stasse, Executive Vice President and Chief Financial Officer, signed the report on behalf of Trinseo PLC on November 9, 2026. The company's ordinary shares, par value $0.01 per share, carry the trading symbol TSEOF, with the exchange field listed as N/A in the registered-securities table of the filing. Trinseo's Commission File Number is 001-36473.

What Was Disclosed

Trinseo PLC filed an 8-K on November 9, 2026, furnishing a press release and investor presentation related to its third-quarter and full-year financial results for the period ended September 30, 2026. No detailed financial figures were included in the 8-K body itself.