Trinseo amends filing to correct exhibit names

Trinseo PLC filed an amended current report to correct its earlier submission related to a financing agreement.

(Neutral)

Form Type

8-K/A

Rhea-AI Filing Summary

Trinseo PLC filed an amended current report to correct its earlier submission related to a financing agreement. The Form 8-K/A, labeled Amendment No. 1, is being used solely to refile Exhibit 10.2 so that typographical errors in the names of certain guarantors on the signature pages are corrected.

The corrected Exhibit 10.2 covers a Senior Secured Super-Priority Debtor-In-Possession HoldCo Credit Agreement dated May 28, 2026, among Trinseo PLC, various financing subsidiaries, guarantors, lenders, and Alter Domus (US) LLC as administrative and collateral agent. No other disclosures from the original report are changed.

8-K Event Classification

Item 9.01 — Financial Statements and Exhibits

1 item

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

Key Figures

Amendment date: May 28, 2026 Exhibit corrected: Exhibit 10.2

2 metrics

Amendment date May 28, 2026 Date of Senior Secured Super-Priority Debtor-In-Possession HoldCo Credit Agreement

Exhibit corrected Exhibit 10.2 Refiling to correct typographical errors in guarantor names

Key Terms

Senior Secured Super-Priority Debtor-In-Possession HoldCo Credit Agreement, guarantors, administrative agent, collateral agent

4 terms

Senior Secured Super-Priority Debtor-In-Possession HoldCo Credit Agreement financial

"Senior Secured Super-Priority Debtor-In-Possession HoldCo Credit Agreement, dated as of May 28, 2026"

guarantors financial

"to correct typographical errors in the names of certain guarantors contained in the signature pages"

administrative agent financial

"Alter Domus (US) LLC, as administrative agent and collateral agent"

An administrative agent is a bank or financial firm appointed to handle the day-to-day paperwork and communication for a group of lenders on a loan or credit agreement, acting as the central point for collecting payments, distributing funds, monitoring covenants, and sharing information. For investors, the administrative agent matters because it influences how quickly lenders receive updates, how smoothly repayments and waivers are handled, and how effectively the lending group enforces terms — think of it as a property manager coordinating tasks for multiple owners.

collateral agent financial

"Alter Domus (US) LLC, as administrative agent and collateral agent"

A collateral agent is a neutral third party that holds and manages the assets pledged to secure a loan on behalf of a group of lenders, acting like the keyholder to a shared safe. If the borrower falls behind, the collateral agent enforces the lenders’ rights and coordinates who gets what, which affects how quickly and how much lenders can recover. Investors care because the agent’s role shapes recovery prospects, enforcement speed and the clarity of lenders’ claims.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does Trinseo PLC (TSEOF) disclose in this Form 8-K/A amendment?

Trinseo PLC files an amended report to correct Exhibit 10.2 only. The change fixes typographical errors in certain guarantor names on the signature pages of a credit agreement, leaving all original disclosures and other exhibits unchanged.

Why did Trinseo PLC (TSEOF) refile Exhibit 10.2 with this amendment?

The company refiled Exhibit 10.2 to correct typographical errors in the names of certain guarantors. The underlying Senior Secured Super-Priority Debtor-In-Possession HoldCo Credit Agreement itself remains the same; only the name spellings on signature pages are updated.

Does this Trinseo PLC (TSEOF) Form 8-K/A change any prior financial or business disclosures?

The amendment states it does not modify, update, or otherwise amend any disclosures in the original current report. Only the exhibit with guarantor names is corrected, and all other information and exhibits from the original filing remain in effect.

What agreement is described in Exhibit 10.2 in Trinseo PLC’s (TSEOF) amended filing?

Exhibit 10.2 is a Senior Secured Super-Priority Debtor-In-Possession HoldCo Credit Agreement dated May 28, 2026. It is among Trinseo PLC as parent, specified financing subsidiaries as borrowers and holdings, various guarantors and lenders, and Alter Domus (US) LLC as administrative and collateral agent.

Who serves as administrative and collateral agent in Trinseo PLC’s (TSEOF) Exhibit 10.2 agreement?

Alter Domus (US) LLC is named as both administrative agent and collateral agent under the Senior Secured Super-Priority Debtor-In-Possession HoldCo Credit Agreement, as described in Exhibit 10.2 that Trinseo PLC refiled with corrected guarantor names.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/12/2026 - 04:09 PM

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION 

Washington, D.C. 20549

FORM 8-K/A

(Amendment No. 1)

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 28, 2026

Trinseo PLC

(Exact name of registrant as specified in its charter)

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

440 East Swedesford Road, Suite 301,

Wayne, Pennsylvania 19087

(Address of principal executive offices, including zip code)

(610) 240-3200

(Telephone number, including area code)

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):

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:

Title of Each Class	Trading symbol(s)	Name of Each Exchange on which registered
Ordinary Shares, par value $0.01 per share	TSEOQ	N/A

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).

Emerging growth company ¨

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. ¨

EXPLANATORY NOTE

This Current Report on Form 8-K/A (this “Amendment No. 1”) amends the Current Report on Form 8-K filed by Trinseo PLC (the “Company”) with the Securities and Exchange Commission (the “SEC”) on June 1, 2026 (the "Original Form 8-K").

The Company is filing this Amendment No. 1 solely to refile Exhibit 10.2 to correct typographical errors in the names of certain guarantors contained in the signature pages thereto. The corrected Exhibit 10.2 is filed with this Amendment No. 1.

Except as described above, this Amendment No. 1 does not modify, update or otherwise amend any disclosures contained in the Original Form 8-K or the other exhibits thereto, and such disclosures remain unchanged. This Amendment No. 1 should be read in conjunction with the Original Form 8-K.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.		Description

10.2⁺		Senior Secured Super-Priority Debtor-In-Possession HoldCo Credit Agreement, dated as of May 28, 2026, by and among Trinseo PLC, as parent, Trinseo NA Finance LLC, as holdings, Trinseo Luxco Finance SPV S.à r.l. and Trinseo NA Finance SPV LLC, as borrowers, the guarantors party thereto from time to time, the lenders party thereto from time to time, and Alter Domus (US) LLC, as administrative agent and collateral agent

104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

⁺	Certain of the schedules and attachments to this exhibit have been omitted pursuant to Regulation S-K, Item 601(a)(5). The registrant hereby undertakes to provide further information regarding such omitted materials to the SEC upon request.

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.

	TRINSEO PLC

	By:	/s/ David Stasse
	Name:	David Stasse
	Title:	Executive Vice President and Chief Financial Officer

Date: June 12, 2026

Source: View Original Filing on SEC EDGAR

Filing Exhibits & Attachments

4 documents

Agreements & Contracts

EX-10.2 EXHIBIT 10.2 1.1 MB