NEW YORK, June 16, 2023 (GLOBE NEWSWIRE) -- The Klein Law Firm announces that a class action complaint has been filed on behalf of shareholders of Trinseo PLC (NYSE: TSE) alleging that the Company violated federal securities laws. Class Period: May 3, 2021 to March 27, 2023 Lead Plaintiff Deadline: June 20, 2023 No obligation or cost to you.