Trinseo (NYSE: TSE) plans PS plant closure with $30–40M charges, eyes $10M savings

Rhea-AI Filing Summary

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.

Insights

Equity restructuring analyst

Trinseo records sizable restructuring charges now to streamline polystyrene operations and target $10M annual profit improvement.

Trinseo PLC plans to shut its Schkopau, Germany polystyrene plant and consolidate production in Tessenderlo, Belgium. Management expects total pre-tax restructuring charges of $30 million to $40 million, broken into employee-related, asset-related, and exit costs. Cash payments tied to these actions are projected at $18 million to $24 million, with most outflows completed by the end of 2028.

The plan is scheduled to start in the fourth quarter of 2025 and finish by the end of 2028, but the company notes that timing and costs could change as it negotiates with works councils, industrial associations and government authorities. This introduces execution risk around both the size and schedule of the charges.

Trinseo estimates the restructuring will yield about $10 million in annualized profitability improvement beginning in 2026. The net effect over time will depend on how closely actual charges and savings track these estimates and on broader market conditions for polystyrene once consolidation is complete.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

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Date of Report (Date of earliest event reported): December 5, 2025

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Trinseo PLC

(Exact name of registrant as specified in its charter)

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Ireland	​	001-36473	​	N/A
(State or other jurisdiction of incorporation or organization)	​	(Commission File Number)	​	(I.R.S. Employer Identification Number)

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440 East Swedesford Road, Suite 301,

Wayne, Pennsylvania 19087

(Address of principal executive offices, including zip code)

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(610) 240-3200

(Telephone number, including area code)

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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

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☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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Title of Each Class	Trading symbol(s)	Name of Each Exchange on which registered
Ordinary Shares, par value $0.01 per share	TSE	New York Stock Exchange

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

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Emerging growth company ☐

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If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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ITEM 2.05Costs Associated with Exit or Disposal Activities.

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On December 5, 2025, the management team of Trinseo PLC (the “Company”), upon authorization from the Company’s Board of Directors, approved a restructuring plan to permanently close its polystyrene (“PS”) production operations in Schkopau, Germany with consolidation of remaining PS operations in Tessenderlo, Belgium (the “PS Restructuring Plan”).

The Company expects to record total pre-tax restructuring charges of $30 million to $40 million, principally comprised of $3 million to $5 million of employee-related costs, $10 million to $14 million of asset-related charges and $15 million to $21 million related to exiting production activities, including contract terminations, demolition and decommissioning.

The anticipated future cash payments associated with these charges are expected to be approximately $18 million to $24 million with substantially all payments expected to be made by the end of 2028.

The Company expects the PS Restructuring Plan actions to commence in the fourth quarter of 2025 and be completed by the end of 2028 subject to the satisfaction of local law requirements. However, the actual timing and costs of the PS Restructuring Plan may differ from the Company’s current expectations and estimates and such differences may be material since these charges are subject to ongoing negotiations with works councils, industrial associations and government authorities.

The Company estimates that the PS Restructuring Plan initiatives will deliver approximately $10 million of annualized profitability improvement beginning in 2026.

Cautionary Note on Forward-Looking Statements

This Current Report may contain forward-looking statements including, without limitation, statements concerning plans, objectives, goals, projections, forecasts, strategies, future events or performance, and underlying assumptions and other statements, which are not statements of historical facts or guarantees or assurances of future performance. Forward-looking statements may be identified by the use of words like “expect,” “anticipate,” “believe,” “intend,” “forecast,” “outlook,” “will,” “may,” “might,” “see,” “tend,” “assume,” “potential,” “likely,” “target,” “plan,” “contemplate,” “seek,” “attempt,” “should,” “could,” “would” or expressions of similar meaning. Forward-looking statements reflect management’s evaluation of information currently available and are based on the Company’s current expectations and assumptions regarding its business, the economy, its current indebtedness, and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict. Factors that might cause future results to differ from those expressed by the forward-looking statements include, but are not limited to, our ability to successfully implement and complete proposed restructuring initiatives and to successfully generate cost savings through such initiatives; our ability to successfully negotiate agreements with relevant works councils, unions or third parties; our ability to successfully execute our overall business and transformation strategy; increased costs or disruption in the supply of raw materials; deterioration of our credit profile limiting our access to commercial credit; compliance with laws and regulations impacting our business; conditions in the global economy and capital markets; our current and future levels of indebtedness and ability to service our debt; our ability to meet the covenants under our existing indebtedness; our ability to generate cash flows from operations; and those discussed in our Annual Report on Form 10-K, under Part I, Item 1A —”Risk Factors” and elsewhere in our other reports, filings and furnishings made with the U.S. Securities and Exchange Commission from time to time. As a result of these or other factors, the Company’s actual results, performance or achievements may differ materially from those contemplated by the forward-looking statements. Therefore, we caution you against relying on any of these forward-looking statements. The forward-looking statements included in this Current Report are made only as of the date hereof. The Company undertakes no obligation to publicly update or revise any forward-looking statement as a result of new information, future events or otherwise, except as otherwise required by law.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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	TRINSEO PLC
	By:	/s/ David Stasse
	Name:	David Stasse
	Title:	Executive Vice President and Chief Financial Officer
Date: December 10, 2025

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FAQ

What restructuring did Trinseo PLC (TSE) announce in this 8-K?

Trinseo PLC announced a restructuring plan to permanently close its polystyrene production operations in Schkopau, Germany and consolidate remaining polystyrene operations in Tessenderlo, Belgium.

How much in restructuring charges will Trinseo PLC (TSE) record?

Trinseo expects total pre-tax restructuring charges of $30 million to $40 million, including $3 million to $5 million in employee-related costs, $10 million to $14 million in asset-related charges, and $15 million to $21 million related to exiting production activities.

What cash outflows does Trinseo (TSE) expect from the polystyrene restructuring?

The company anticipates future cash payments of approximately $18 million to $24 million tied to the restructuring charges, with substantially all payments expected to be made by the end of 2028.

When will Trinseo PLC (TSE) implement and complete the PS Restructuring Plan?

Trinseo expects restructuring actions to commence in the fourth quarter of 2025 and be completed by the end of 2028, subject to satisfying local law requirements and successful negotiations with works councils and other stakeholders.

What profitability improvement does Trinseo (TSE) expect from the PS Restructuring Plan?

The company estimates the restructuring initiatives will deliver approximately $10 million of annualized profitability improvement beginning in 2026, reflecting expected cost savings from consolidating polystyrene production.

What risks or uncertainties does Trinseo PLC (TSE) highlight around this restructuring?

Trinseo notes that the actual timing and costs of the restructuring may differ from current estimates and that such differences may be material, as charges depend on ongoing negotiations with works councils, industrial associations and government authorities, as well as broader business and economic conditions.