# EDGAR Filing Document

**Accession Number:** 0001519061
**File Stem:** 0001558370-25-011764
**Filing Date:** 2025-8
**Character Count:** 6708
**Document Hash:** 860c2a40d4f46119d125ff103198cdd7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001558370-25-011764.hdr.sgml**: 20250826

**ACCESSION NUMBER**: 0001558370-25-011764

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 15

**CONFORMED PERIOD OF REPORT**: 20250826

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20250826

**DATE AS OF CHANGE**: 20250826

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Trinseo PLC
- **CENTRAL INDEX KEY:** 0001519061
- **STANDARD INDUSTRIAL CLASSIFICATION:** PLASTICS, MATERIALS, SYNTH RESINS & NONVULCAN ELASTOMERS [2821]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** L2
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36473
- **FILM NUMBER:** 251258573

**BUSINESS ADDRESS:**
- **STREET 1:** 440 EAST SWEDESFORD ROAD
- **STREET 2:** SUITE 301
- **CITY:** WAYNE
- **STATE:** PA
- **ZIP:** 19087
- **BUSINESS PHONE:** 610-240-3200

**MAIL ADDRESS:**
- **STREET 1:** 440 EAST SWEDESFORD ROAD
- **STREET 2:** SUITE 301
- **CITY:** WAYNE
- **STATE:** PA
- **ZIP:** 19087

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Trinseo S.A.
- **DATE OF NAME CHANGE:** 20110429

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Bain Capital Everest (Luxco 2) S.a r.l.
- **DATE OF NAME CHANGE:** 20110426

?xml version='1.0' encoding='ASCII'?

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**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d)**

**of The Securities Exchange Act of 1934**

Date of Report (Date of earliest event reported): **August 26, 2025**

**Trinseo PLC**

(Exact name of registrant as specified in its charter)

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| | | |
|:---|:---|:---|
| **Ireland** | **001-36473** | **N/A** |
| (State or other jurisdiction<br>of incorporation or organization) | (Commission<br>File Number) | (I.R.S. Employer<br>Identification Number) |

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**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:

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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).

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. ☐

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**ITEM 7.01** **Regulation FD.**

On August 26, 2025, Trinseo PLC (the "Company") released supplemental information concerning the composition of the Company's trade volumes, by business segment and end application, to assist investors with understanding demand trends by end application. The information is attached as Exhibit 99.1 and incorporated by reference herein.

The information contained in Item 7.01 and Exhibit 99.1 of this Current Report shall not be deemed filed for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such a filing.

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| | |
|:---|:---|
| **ITEM 9.01** | **Exhibits.** |
| 99.1 | [Information concerning trade volumes by segment and end application](tse-20250826xex99d1.htm) |
| 104 | Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101) |

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**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** | **TRINSEO PLC** |
|  | By: | /s/ David Stasse |
|  | Name: | David Stasse |
|  | Title: | Executive Vice President and Chief Financial Officer |
| Date: August 26, 2025 |  |  |

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## Exhibit 99.1

#### Exhibit 99.1

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|:---|:---|
| &nbsp;&nbsp;![GRAPHIC](tse-20250826xex99d1g001.jpg) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 2024 Annual Trinseo Trade Volumes by End Application Building & Construction 3 14% Textile 18% Graphical Paper 25% Board & Specialty Paper 41% Other 2% Latex Binders1 Appliances 11% Mobility 14% Building & Construction 19% Textile Consumer Electronics 5% 3% Packaging 10% Graphical Paper 8% MMA 4% Board & Specialty Paper 12% Distribution / Other 14% Total Company1 2 1 Percentages are reflected as a % of segment volume (kts) 2 Formerly Automotive 3 Primarily consists of Battery Binders and Coatings, Adhesives, Sealants, and Elastomers (CASE), with applications mainly in DIY and Infrastructure  |

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| | |
|:---|:---|
| &nbsp;&nbsp;![GRAPHIC](tse-20250826xex99d1g002.jpg) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 Appliances 2% Mobility 42% Building & Construction3 14% Consumer Electronics 8% MMA 18% Distribution / Other 16% Engineered Materials1 2024 Annual Trinseo Trade Volumes by End Application 1 Percentages are reflected as a % of segment volume (kts) 2 Formerly Automotive 3 Primarily related to new house builds / renovations, sheets, surfaces, and sanitary applications Appliances 22% Mobility 9% Building & Construction3 25% Consumer Electronics 3% Packaging 20% Distribution / Other 21% Polymer Solutions1 2 2 |

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