Trinseo PLC SEC filings TSEOQ

Trinseo PLC has 1,001 filings in SEC EDGAR's recent list, going back to Jun 15, 2015. Its latest annual report, Form ARS, was filed on Aug 7, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 27, 2026 (other events). The company's fiscal year ends on December 31.

Form Description Filed Period
ARS Annual report to shareholders Aug 7, 2026 Dec 31, 2025
10-K/A Amended annual report Apr 27, 2026 Dec 31, 2025
10-K Annual report Mar 13, 2026 Dec 31, 2025
ARS Annual report to shareholders Apr 29, 2025 Dec 31, 2024
10-K Annual report Feb 27, 2025 Dec 31, 2024
10-K Annual report Feb 23, 2024 Dec 31, 2023
10-K Annual report Feb 27, 2023 Dec 31, 2022
10-K Annual report Feb 23, 2022 Dec 31, 2021
10-K Annual report Feb 22, 2021 Dec 31, 2020
10-K Annual report Feb 28, 2020 Dec 31, 2019
10-K Annual report Feb 28, 2019 Dec 31, 2018
10-K Annual report Mar 1, 2018 Dec 31, 2017
10-K Annual report Mar 1, 2017 Dec 31, 2016
10-K/A Amended annual report Mar 15, 2016 Dec 31, 2015
10-K Annual report Mar 11, 2016 Dec 31, 2015

Showing 15 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

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Company profile

Industry
Plastic Materials, Synth Resins & Nonvulcan Elastomers (SIC 2821)
Listed as
TSEOQ (OTC)
Fiscal year ends
December 31
Incorporated in
Ireland
Headquarters
Wayne, PA
SEC filer status
Accelerated filer
SEC CIK
1519061
Former names
Trinseo S.A. (until Oct 18, 2021)

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.