Trinseo holds shareholder meeting after prior session lacked quorum

• Trinseo held its annual general meeting on Sept. 30, 2026, following an earlier adjournment.
• Shareholders backed the slate of 11 director nominees to serve through the 2027 annual general meeting.
• Investors ratified PricewaterhouseCoopers as independent auditor for the year ending Dec. 31, 2026.
• An extraordinary general meeting was also held Sept. 30, 2026; no resolutions were presented or adopted.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Trinseo plc published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001104659-26-112217), on September 30, 2026, and is solely responsible for the information contained therein.