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.
The SEC filings of Trinseo PLC (NYSE: TSE) provide detailed insight into the company’s operations as a specialty material solutions provider in plastics and latex binders, as well as its financial condition, capital structure and governance. Through periodic and current reports, investors can review how Trinseo presents the performance of its Engineered Materials, Latex Binders and Polymer Solutions segments and its equity method investment in Americas Styrenics.
On this page, you can access Trinseo’s Form 8-K current reports, which disclose material events such as quarterly financial results, restructuring plans, changes to dividend policy and notices from the New York Stock Exchange regarding continued listing standards. For example, Trinseo has filed 8-Ks describing the MMA Restructuring Plan in Italy, the PS Restructuring Plan in Germany, the indefinite suspension of its quarterly dividend, and NYSE notices related to minimum market capitalization and minimum share price criteria.
Trinseo’s filings also discuss non-GAAP financial measures such as EBITDA, Adjusted EBITDA, Adjusted Net Income (Loss), Adjusted EPS and Free Cash Flow, along with reconciliations to GAAP figures in the notes to its condensed consolidated financial information. These disclosures help readers understand how management evaluates business trends, pricing strategies and liquidity beyond standard GAAP metrics.
In addition, SEC documents cover governance and compensation matters, including Annual General Meeting voting results, amendments to the Omnibus Incentive Plan, and retention or incentive arrangements for named executive officers. Risk factor updates, such as those related to potential NYSE delisting if listing standards are not met, are also included in Trinseo’s filings.
Stock Titan’s platform presents these filings with AI-powered summaries that explain key points in accessible language, highlight segment and liquidity information from quarterly and annual reports, and surface important items such as restructuring charges or listing-status disclosures. Investors can use this page to follow Trinseo’s 10-K and 10-Q reports when available, as well as Form 4 insider transaction reports and other SEC documents, with real-time updates from EDGAR.
Trinseo PLC senior vice president and chief legal officer Angelo N. Chaclas reported two share dispositions that were automatic tax withholdings rather than open-market sales. On February 21, 2026, 3,690 Ordinary Shares were withheld at
Trinseo PLC received an amended ownership report from CastleKnight and related entities. The Schedule 13G/A (Amendment No. 2) shows that CastleKnight Master Fund LP, its affiliated general partners and managers, Weitman Capital LLC, and Aaron Weitman collectively report beneficial ownership of 516,826 ordinary shares, or 1.4% of Trinseo’s ordinary shares.
All reporting persons list zero sole voting and dispositive power and instead report shared voting and shared dispositive power over the same 516,826 shares. They also certify that the securities were not acquired and are not held for the purpose or effect of changing or influencing control of Trinseo, but instead are being reported on a passive basis.
Trinseo PLC amended its Credit Agreement through subsidiaries on February 16, 2026 to extend, until March 19, 2026, the grace period for interest payments due between February 1 and March 1, 2026. This extension is designed to match the grace period available under its second‑lien notes.
Separately, a Trinseo subsidiary elected to use a 30‑day contractual grace period on an approximately $10.0 million interest payment due February 17, 2026 on its 7.625% second lien secured notes due 2029. The company states it has sufficient cash to pay but chose to delay while it continues ongoing discussions with financial stakeholders regarding its capital structure, retaining the right to pay within the grace period before any event of default is triggered.
Trinseo PLC reported a significant institutional shareholder disclosure. Charles Schwab Investment Management Inc., a Delaware-based investment adviser, filed a Schedule 13G stating beneficial ownership of 2,091,125 Ordinary Shares of Trinseo PLC, representing 5.8% of the class as of 12/31/2025.
Schwab reports sole power to vote and dispose of all 2,091,125 shares, with no shared voting or dispositive power. The filing is certified as being made in the ordinary course of business and explicitly notes that the securities were not acquired and are not held for the purpose of changing or influencing control of Trinseo PLC.
Trinseo PLC director reports no share ownership
Trinseo PLC director Carol Flaton filed an initial ownership report stating that no Trinseo securities are beneficially owned. The Form 3 identifies Flaton as a director of Trinseo PLC and confirms there are no non-derivative or derivative securities reported as owned, meaning there are currently no Trinseo shares or related instruments attributed to this insider.
Trinseo PLC director Frizzley Jill Kathleen filed an initial ownership report on Form 3 in connection with an event dated 01/16/2026. The filing identifies her as a director of Trinseo PLC and states that she does not beneficially own any Trinseo securities. Both the non-derivative and derivative tables are effectively empty, and the explanation section explicitly notes that no securities are beneficially owned.
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
The company’s ordinary shares also averaged below the
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.