TSE SCHEDULE 13G/A: SEC filing
An institutional holder
Filed with the SEC on · accession 0002012383-26-003727
TSE filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Oct 27, 2026. An institutional holder filed an amended Schedule 13G regarding its ownership position in Trinseo PLC.
Summary of the filing
An institutional holder filed an amended Schedule 13G regarding its ownership position in Trinseo PLC. The filing indicates a change in the holder's passive ownership stake.
Key details
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What did TSE file with the SEC on Oct 27, 2026?
TSE filed a SCHEDULE 13G/A (SEC filing). An institutional holder filed an amended Schedule 13G regarding its ownership position in Trinseo PLC. The filing indicates a change in the holder's passive ownership stake.
How do I read a SCHEDULE 13G/A?
A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.
Why are SEC filings important?
Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).
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