Trinseo PLC (NYSE: TSE) files Form 25 for voluntary withdrawal from NYSE

Rhea-AI Filing Summary

Trinseo PLC has been removed from listing and/or registration on the New York Stock Exchange as documented in a Form 25 notification. The Exchange states it has complied with 17 CFR 240.12d2-2 procedures and the company has complied with Exchange rules governing the voluntary withdrawal of Ordinary Shares.

Insights

Exchange Compliance Expert

Form 25 records a voluntary withdrawal following required Exchange procedures.

The notice states the New York Stock Exchange certified compliance with 17 CFR 240.12d2-2 and that the issuer complied with rules governing voluntary withdrawal of Ordinary Shares. This frames the action as administrative under the Exchange's delisting/withdrawal rules.

Timing and subsequent listing status on other venues are not disclosed in the excerpt; future filings may provide details on transfer or trading arrangements.

Corporate Actions Counsel

The filing documents procedural steps for removal, not a regulatory penalty or enforcement action.

The Form 25 notification confirms procedural compliance by both the Exchange and the issuer under the cited SEC rules. The language uses the operative phrase "voluntary withdrawal", indicating this was initiated within the Exchange/issuer framework.

Legal and market consequences for holders (e.g., transfer of listing) are not detailed in the provided excerpt and would appear in subsequent disclosures if required.

UNITED STATES

OMB APPROVAL

OMB Number:			3235-0080
Expires:	March 31, 2018
Estimated average burden
hours per response:			1.7

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 25

NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION
UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934.

Commission File Number

001-36473

Issuer:	Trinseo PLC
Exchange:	NEW YORK STOCK EXCHANGE LLC

(Exact name of Issuer as specified in its charter, and name of Exchange where security is listed and/or registered)

Address:	440 East Swedesford Road
	Wayne	PENNSYLVANIA	19087
Telephone number:

(Address, including zip code, and telephone number, including area code, of Issuer's principal executive offices)

Ordinary Shares

(Description of class of securities)

Please place an X in the box to designate the rule provision relied upon to strike the class of securities from listing and registration:

17 CFR 240.12d2-2(a)(1)

17 CFR 240.12d2-2(a)(2)

17 CFR 240.12d2-2(a)(3)

17 CFR 240.12d2-2(a)(4)

Pursuant to 17 CFR 240.12d2-2(b), the Exchange has complied with its rules to strike the class of securities from listing and/or withdraw registration on the Exchange. ¹

Pursuant to 17 CFR 240.12d2-2(c), the Issuer has complied with its rules of the Exchange and the requirements of 17 CFR 240.12d-2(c) governing the voluntary withdrawal of the class of securities from listing and registration on the Exchange.

Pursuant to the requirements fo the Securities Exchange Act of 1934, NEW YORK STOCK EXCHANGE LLC certifies that it has reasonable grounds to believe that it meets all of the requirements for filing the Form 25 and has caused this notification to be signed on its behalf by the undersigned duly authorized person.

2026-03-18	By	Daniel Contrastano		Senior Manager, Market Watch
Date		Name		Title

¹ Form 25 and attached Notice will be considered compliance with the provisions of 17 CFR 240.19d-1 as applicable. See General Instructions.

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What does Trinseo PLC's Form 25 mean for its NYSE listing?

It confirms the New York Stock Exchange has removed Trinseo PLC's Ordinary Shares from listing. The Exchange certified compliance with 17 CFR 240.12d2-2 and the issuer followed rules for a voluntary withdrawal, per the notice.

Was the removal of Trinseo PLC from the NYSE voluntary?

Yes. The filing cites the issuer's compliance with Exchange rules governing the voluntary withdrawal of the class of securities and the Exchange's related procedures under 17 CFR 240.12d2-2.

Who filed the Form 25 for Trinseo PLC and what did it state?

The New York Stock Exchange LLC filed the Form 25 and stated it has reasonable grounds to believe it complied with rules to strike the class from listing and that the issuer complied with voluntary withdrawal requirements.

Does the Form 25 imply any regulatory violation by Trinseo PLC?

No. The notice describes procedural compliance with Exchange and SEC rules for voluntary withdrawal and does not allege any wrongdoing or enforcement action in the provided excerpt.

Will trading of Trinseo PLC shares cease after this Form 25?

The filing records removal from NYSE listing but does not describe post‑removal trading venues or mechanics; transfer or trading arrangements are not detailed in the provided excerpt.