{"url_path":"/sec/tseof/8-k/2026-05-14/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-05-14","source_url":"https://www.sec.gov/Archives/edgar/data/1519061/0001104659-26-060590-index.html","accession_number":"0001104659-26-060590","cik":"0001519061","ticker":"TSEOQ","issuer_name":"Trinseo PLC","edgar_url":"https://www.sec.gov/Archives/edgar/data/1519061/0001104659-26-060590-index.html","primary_entity_key":"0001519061","primary_entity_name":"Trinseo PLC"},"word_count":747,"has_tables":true,"body_markdown":"false\n0001519061\n00-0000000\n\n0001519061\n\n2026-05-13\n2026-05-13\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n \n\n**UNITED STATES** \n\n**SECURITIES\nAND EXCHANGE COMMISSION **\n\n**Washington,\nD.C. 20549**\n\n \n\n \n\n \n\n**FORM 8-K**\n\n \n\n \n\n \n\n**CURRENT REPORT**\n\n**Pursuant to Section 13\nor 15(d)**\n\n**of The Securities Exchange\nAct of 1934**\n\n \n\nDate of Report (Date of earliest event reported):\n**May 13, 2026**\n\n \n\n \n\n \n\n**Trinseo\nPLC**\n\n(Exact name of registrant\nas specified in its charter)\n\n \n\n \n\n \n\n**Ireland**\n \n**001-36473**\n \n**N/A**\n\n(State or other jurisdiction\n\nof incorporation or organization)\n \n(Commission\n\nFile Number)\n \n(I.R.S. Employer\n\nIdentification Number)\n\n \n\n**440\nEast Swedesford Road****, Suite 301****,**\n\n**Wayne****,\nPennsylvania****19087**\n\n(Address of principal\nexecutive offices, including zip code)\n\n \n\n**(610****) 240-3200**\n\n(Telephone number, including\narea code)\n\n \n\n \n\n \n\nCheck\nthe appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under\nany of the following provisions (see General Instruction A.2. below):\n\n \n\n¨Written\ncommunications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n \n\n¨Soliciting\nmaterial pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n \n\n¨Pre-commencement\ncommunications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n \n\n¨Pre-commencement\ncommunications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\n \n\nSecurities registered pursuant to Section 12(b) of\nthe Act:\n\n \n\n**Title of Each\nClass**\n**Trading\nsymbol(s)**\n**Name of Each Exchange\non which registered**\n\nOrdinary Shares, par value $0.01 per share\nTSEOF\nN/A*\n\n \n\nIndicate\nby check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405\nof this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).\n\n \n\nEmerging growth\ncompany ¨\n\n \n\nIf an emerging\ngrowth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any\nnew or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨\n\n \n\n** On March 23, 2026, the NYSE filed a Form 25 relating to the delisting\nfrom the NYSE of our ordinary shares. The delisting became effective on March 30, 2026. The ordinary shares will continue to trade over\nthe counter under the symbol “TSEOF.”*\n\n \n\n \n\n \n\n \n\n \n\n \n\n**EXPLANATORY NOTE**\n\n \n\n**Debt Restructuring Pursuant to Restructuring Support Agreement\nwith Majority of Senior Lenders**\n\n \n\nPursuant\nto a restructuring support agreement with certain holders representing a majority of the Company Parties’ prepetition funded indebtedness\n(the “Restructuring Support Agreement”), Trinseo PLC (the “Company”)\nand certain of its subsidiaries and affiliates (collectively, the “Company Parties”)\nintend to implement a comprehensive restructuring of the Company Parties’ existing capital structure (the “Restructuring\nTransactions”) that will discharge and release approximately $2.0 billion of the Company Parties’ prepetition funded\nindebtedness (which is expected to reduce annual interest expense by approximately $140 million) in exchange for certain recoveries set\nforth in the Restructuring Support Agreement and further described below. The Restructuring Support Agreement contemplates effectuating\nthe Restructuring Transactions through a joint Chapter 11 plan of reorganization (the “Plan”)\nto be filed by the applicable Company Parties (the “Debtors”) in cases to\nbe commenced under Chapter 11 of Title 11 of the United States Code (the “Bankruptcy Code”)\nin the United States Bankruptcy Court for the Southern District of Texas (the “Bankruptcy\nCourt,” and such cases, the “Chapter 11 Cases”). Pursuant to\nthe Restructuring Support Agreement, supporting senior lenders have committed to support and vote for the Plan and use commercially\nreasonable efforts to consummate and complete the Restructuring Transactions. The Company Parties do not expect any operational impact\nfrom the Restructuring Transactions and plan to continue to operate and serve customers and pay vendors and employees in the ordinary\ncourse of business as “debtors-in-possession” under the jurisdiction of the Bankruptcy Court and in accordance with the applicable\nprovisions of the Bankruptcy Code and orders of the Bankruptcy Court. Existing lenders will initially receive 100% of the reorganized\nCompany's equity interests through the Restructuring Transactions. Holders of the Company’s Existing Equity Interests will\nhave their equity interests cancelled and will receive no recovery. Capitalized terms used but not defined herein have the meanings given\nto them in the Restructuring Support Agreement and the term sheet attached thereto (the “Restructuring\nTerm Sheet”).\n\n \n\n*This Current Report does not constitute an offer\nto sell or buy, or the solicitation of an offer to sell or buy, any securities, nor does it constitute a solicitation of acceptances or\nrejections of any Chapter 11 plan of reorganization within the meaning of Section 1125 of the Bankruptcy Code. Any solicitation or\noffer will be made only in compliance with applicable securities laws and/or the provisions of the Bankruptcy Code.*"}