Trinseo PLC Files 8-K: Delisting Notice

TL;DR

Trinseo might be delisted, filing 8-K on 12/15/25 for 12/12/25 event.

AI Summary

Trinseo PLC filed an 8-K on December 15, 2025, reporting a notice of delisting or failure to satisfy continued listing rules, a Regulation FD disclosure, and other events. The filing date for the report is December 12, 2025. Specific details regarding the delisting or listing standard failure are not provided in this excerpt.

Why It Matters

This filing indicates potential issues with Trinseo PLC's continued listing on a stock exchange, which could impact its stock's liquidity and investor confidence.

Risk Assessment

Risk Level: high — A notice of delisting or failure to meet listing standards is a significant event that can lead to severe consequences for a company's stock.

Key Players & Entities

• Trinseo PLC (company) — Registrant
• December 12, 2025 (date) — Earliest event reported date
• December 15, 2025 (date) — Filing date

FAQ

Key Financial Figures

• $0.01 — registered Ordinary Shares, par value $0.01 per share TSE New York Stock Exchan
• $50 million — ive 30 trading-day period was less than $50 million and, at the same time, its stockholders
• $35.6 million — market capitalization was approximately $35.6 million and its last reported stockholders' def
• $861.6 — f September 30, 2025 was approximately ($861.6) million. Second, the Notice also ind
• $1.00 — pany's ordinary shares had fallen below $1.00 per share over a period of 30 consecuti
• $0.99 — 0 trading-day average closing price was $0.99. In accordance with applicable NYSE p
• $50.0 million — cutive trading-day period was less than $50.0 million and, at the same time, our stockholders
• $1.00 m — onth, we may regain compliance with the $1.00 minimum share price rule. If we are unabl
• $15 million — tive 30 trading-day period is less than $15 million or (ii) our ordinary shares trade at an

Filing Documents

• tse-20251212x8k.htm (8-K) — 60KB
• tse-20251212xex99d1.htm (EX-99.1) — 16KB
• tse-20251212xex99d1001.jpg (GRAPHIC) — 9KB
• 0001104659-25-120876.txt ( ) — 208KB
• tse-20251212.xsd (EX-101.SCH) — 3KB
• tse-20251212_lab.xml (EX-101.LAB) — 16KB
• tse-20251212_pre.xml (EX-101.PRE) — 10KB
• tse-20251212x8k_htm.xml (XML) — 5KB

01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

ITEM 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. On December 12, 2025 Trinseo PLC (the "Company") received a notice (the "Notice") from the New York Stock Exchange (the "NYSE") indicating the Company is not currently in compliance with two of the NYSE's continued listing standards (the "Listing Standards"). First, the Notice indicated that the Company was not currently in compliance with the Listing Standard set forth in Section 802.01B of the NYSE's Listed Company Manual (the "Minimum Market Capitalization Standard") due to the fact that the Company's average global market capitalization over a consecutive 30 trading-day period was less than $50 million and, at the same time, its stockholders' equity was less than $50 million. As described in the Notice, as of December 11, 2025, the Company's 30 trading-day average market capitalization was approximately $35.6 million and its last reported stockholders' deficit as of September 30, 2025 was approximately ($861.6) million. Second, the Notice also indicated that the Company was not currently in compliance with the Listing Standard set forth in Section 802.01C of the NYSE's Listed Company Manual (the "Minimum Share Price Criteria") due to the fact that the average closing price of the Company's ordinary shares had fallen below $1.00 per share over a period of 30 consecutive trading days. As described in the Notice, as of December 11, 2025, the Company's 30 trading-day average closing price was $0.99. In accordance with applicable NYSE procedures, within 10 days from receipt of the Notice, the Company intends to notify the NYSE of (i) the Company's intention to regain compliance with the Minimum Share Price Criteria within six months of the Notice (the "Share Price Cure Period") and (ii) its intention to submit a plan to the NYSE, within 45 days from receipt of the Notice, advising it of the definitive actions the Company has taken, is taking, or plan

01 Regulation FD Disclosure

ITEM 7.01 Regulation FD Disclosure. On December 15, 2025, the Company issued a press release regarding receipt of the Notice. The press release is attached hereto as Exhibit 99.1 . The information under this Item 7.01 and in Exhibit 99.1 to this Current Report on Form 8-K are being furnished and shall not be deemed "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. The information under this Item 7.01 and in Exhibit 99.1 to this Current Report on Form 8-K shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended.

01 Other Events

ITEM 8.01 Other Events. The Company is supplementing the risk factors previously disclosed in its Annual Report on Form 10-K for the year ended December 31, 2024 (the "Form 10-K") with the following risk factor: There can be no assurance that we will be able to comply with the continued listing standards of the NYSE, which could result in the delisting of our securities, limit investors' ability to make transactions in our securities, and subject our shares to additional trading restrictions or requirements. On December 12, 2025, we received a written notice from the NYSE (the "Notice") indicating that we no longer comply with the NYSE's continued listing standards set forth in Section 802.01B because our average global market capitalization over a 30 consecutive trading-day period was less than $50.0 million and, at the same time, our stockholders' equity was less than $50.0 million. As described in the Notice, as of December 11, 2025, our 30 trading-day average global market capitalization was approximately $35.6 million and our last reported stockholders' deficit as of September 30, 2025, was approximately ($861.6) million. In accordance with applicable NYSE procedures, we intend to submit a plan to the NYSE advising it of the definitive actions we plan to take that we anticipate will bring us into conformity with the NYSE's minimum market capitalization standard within 18 months of receipt of the Notice. On December 12, 2025, we also received written notice from the NYSE indicating that we are no longer in compliance with the NYSE's continued listing standard set forth in Section 802.01C because our average closing share price has fallen below $1.00 per share for 30 consecutive trading days (the "Share Price Notice"). In accordance with applicable NYSE procedures, within 10 days from receipt of the Share Price Notice, we intend to notify the NYSE of our intention to regain compliance with Section 802.01C of the NYSE continued listing standards. If on t

01

ITEM 9.01 99.1 Exhibits. Press Release of Trinseo PLC dated December 15, 2025 104 Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101) 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: December 15, 2025

View Full Filing

View this 8-K filing on SEC EDGAR