Welcome to our dedicated page for Trinseo Plc SEC filings (Ticker: TSE), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Trinseo PLC filings document material-event disclosures for an Ireland-incorporated specialty materials issuer, including operating results, earnings-release exhibits, investor presentations, capital-structure discussions, credit-facility waivers and listing-status records. Recent Form 8-K reports address financial results and stakeholder discussions involving debt and waiver arrangements, while Form 25 records the removal of the company’s ordinary shares from NYSE listing and the transition of trading to the OTC symbol TSEOF.
Trinseo PLC reported that its Board of Directors voted on January 16, 2026 to expand the board from ten to eleven members and appointed two new independent directors, Carol Flaton and Jill Frizzley, effective immediately.
The company highlights their deep experience in banking, finance, restructuring, governance, strategic transactions, and business transformations, noting this is relevant to ongoing discussions with financial stakeholders about Trinseo's capital structure. Flaton currently serves on the board of QVC Group, Inc., while Frizzley is president of Wildrose Partners LLC and serves on the board of LanzaTechGlobal, Inc.
Under amended consulting agreements dated January 12, 2026, each will receive a $50,000 monthly fee for board service, and the usual director compensation program is suspended for them. Both are covered by Trinseo's standard indemnification agreement, and the company states there are no related-party transactions or special arrangements tied to their selection.
Trinseo PLC approved one-time conditional cash retention bonuses for its named executive officers. The Compensation Committee granted awards of $3,200,000 to President and CEO Frank Bozich, $2,500,000 to Executive Vice President and CFO David Stasse, $1,700,000 to Senior Vice President Francesca Reverberi, $1,350,000 to Senior Vice President and Chief Legal Officer Angelo Chaclas, and $1,000,000 to Senior Vice President and Chief Human Resources Officer Paula Cooney. These retention awards were paid on or about January 8, 2026 and are conditioned on each executive remaining employed through March 31, 2027, except in the case of a defined Qualifying Termination, or else the awards must be fully repaid to the company.
Trinseo PLC received a notice from the New York Stock Exchange that it no longer meets two continued listing standards covering minimum market capitalization and minimum share price.
The NYSE cited a 30 trading‑day average global market capitalization of approximately $35.6 million as of December 11, 2025 and a stockholders’ deficit of approximately ($861.6) million as of September 30, 2025, both below the $50 million thresholds.
The company’s ordinary shares also averaged below the $1.00 minimum, with a 30 trading‑day average closing price of $0.99, triggering a six‑month share price cure period and an 18‑month market capitalization cure period, during which Trinseo plans to submit and follow an NYSE compliance plan.
Its shares will continue trading on the NYSE with a “.BC” indicator during the cure periods, and the notice does not change its ongoing business operations or SEC reporting obligations.
Trinseo PLC approved a restructuring plan to permanently close its polystyrene production operations in Schkopau, Germany and consolidate remaining polystyrene operations in Tessenderlo, Belgium. The company expects to record total pre-tax restructuring charges of $30 million to $40 million, including $3 million to $5 million of employee-related costs, $10 million to $14 million of asset-related charges, and $15 million to $21 million tied to exiting production activities such as contract terminations, demolition and decommissioning. Future cash payments related to these charges are estimated at $18 million to $24 million, with substantially all payments expected by the end of 2028. Actions under the plan are expected to begin in the fourth quarter of 2025 and be completed by the end of 2028, subject to local law requirements and negotiations with works councils and other stakeholders. The company estimates these initiatives will deliver about $10 million of annualized profitability improvement beginning in 2026.
Trinseo PLC reported a wider quarterly loss and lower sales in Q3 2025. Net sales were $743.2 million, down from $867.7 million a year ago, and gross profit fell to $37.4 million. The Company posted an operating loss of $28.2 million and a net loss of $109.7 million, compared with a net loss of $87.3 million in the prior-year period.
Year-to-date, net sales were $2,312.3 million with a net loss of $294.2 million. Interest expense remained elevated at $70.6 million for the quarter and $206.7 million year-to-date. Cash and cash equivalents were $112.1 million, and total debt (less unamortized deferred financing fees) was $2,522.9 million. Shareholders’ equity was a deficit of $861.6 million.
The Company continued restructuring efforts. Q3 activity under the 2024 Restructuring Plan and Stade Shutdown totaled $1.9 million of charges, and the 2023 plan recorded $1.8 million of charges. On October 2, 2025, Trinseo approved an MMA Restructuring Plan in Italy, with expected pre-tax charges of $80.0 million to $100.0 million and anticipated cash payments of $40.0 million to $50.0 million, with substantially all payments expected by the end of 2028.
Trinseo PLC (TSE) furnished a press release announcing its financial results for the third quarter and year ended September 30, 2025, and will host an investor call and webcast on November 7, 2025 at 10:30 AM Eastern Time to discuss the results. The company also made an investor presentation available on its website. The press release is furnished as Exhibit 99.1 and the investor presentation as Exhibit 99.2.
Insider transaction summary: An officer of Trinseo PLC reported a share disposition on 10/03/2025 when 2,067 ordinary shares were withheld by the company to satisfy tax withholding obligations following the vesting of restricted stock units. The shares were reported at a withholding price of $2.33 per share. After the withholding, the reporting person beneficially owned 89,691 ordinary shares directly. The Form 4 was filed by a single reporting person and signed by an attorney-in-fact on 10/07/2025.
Trinseo PLC approved a restructuring plan to permanently close its methyl methacrylate (MMA) plant in Rho and acetone cyanohydrin (ACH) operations in Porto Marghera, Italy. The plan is meant to streamline its MMA production network, with the company sourcing all MMA feedstock from third-party producers.
Trinseo expects total pre-tax restructuring charges of $80 million to $100 million, including $3 million to $6 million of employee-related costs, $40 million to $46 million of asset-related charges, and $37 million to $48 million tied to exiting production activities such as contract terminations, demolition and decommissioning. Future cash payments are projected at $40 million to $50 million, mostly by the end of 2028, with actions beginning in Q4 2025 and targeted completion by the end of 2026, subject to local law. The company estimates about $20 million of annualized profitability improvement starting in 2026. In the same press release, the Board also disclosed that it has voted to indefinitely suspend the quarterly dividend.
Trinseo PLC disclosed that its Board of Directors has voted to indefinitely suspend the company’s quarterly dividend of $0.01 per share. This means shareholders will no longer receive the small recurring cash payment that had been made each quarter.
The company expects this suspension to save approximately $1.5 million annually. Ending the dividend reduces cash outflows and preserves capital within the business, but also removes a source of regular income for shareholders who relied on these payments.
Johanna Frisch, VP and Treasurer of Trinseo PLC (TSE), reported a transaction on 09/30/2025 in which 2,194 ordinary shares were disposed of at a price of $2.35 per share. The filing states these shares were withheld by the company to pay taxes following the vesting of previously granted restricted stock units. After the withholding, the reporting person beneficially owned 15,898 ordinary shares. The Form 4 was signed by an attorney-in-fact on 10/02/2025.