Trinseo PLC 8-K

What Happened

• On March 2, 2026, Trinseo PLC announced it received a written Notice from the New York Stock Exchange that the NYSE has commenced proceedings to delist the company’s ordinary shares under Section 802.01B, because the company’s average market capitalization over a 30-trading-day period fell below the required $15 million. The NYSE immediately suspended trading in the shares.
• The NYSE will file a Form 25 with the SEC to delist the shares; the delisting becomes effective 10 days after that filing. The company previously disclosed (Dec 12, 2025) notices relating to noncompliance with NYSE standards for market cap/equity and for an average closing share price below $1.00.
• As a result of potential Irish stamp duty on transfers after delisting, the Depository Trust Company (DTC) told Trinseo it will stop clearing/settling trades in the shares and will move positions to the company’s transfer agent, Computershare Trust Company, N.A. The shares may begin trading on the OTC Pink market, but there is no assurance of trading, quotations, or sufficient volume.

Key Details

• NYSE action date: March 2, 2026; delisting effective 10 days after NYSE files Form 25 with the SEC.
• Trigger: average market capitalization over 30 trading days fell below $15 million (Section 802.01B).
• Prior notices (Dec 12, 2025): average market cap < $50M with stockholders’ equity < $50M, and average closing price < $1.00 (Section 802.01C).
• Irish stamp duty: potential 1% charge on transfers after suspension; DTC will cease clearing/settling, requiring shareholders to transfer to another clearing agent or register shares directly with Computershare to trade or sell.

Why It Matters

• Liquidity and trading access: Suspension and likely delisting from the NYSE will reduce liquidity and may make it harder for investors to buy or sell Trinseo shares; trading could move to the much less liquid OTC Pink market or not trade at all.
• Transaction costs and process: Transfers after delisting may trigger Irish stamp duty (1%), and brokers may require shareholders to re-register shares with the transfer agent or use a different clearing agent to trade or sell.
• Operations and reporting: Trinseo states the delisting and suspension are not expected to affect its day-to-day business, partner/employee relationships, or SEC reporting obligations; however, marketability and potential pricing of shares could change materially for investors.