---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-027521"
form_type: "8-K"
ticker: "TSEOF"
cik: "0001519061"
company_name: "Trinseo PLC"
filed_at: "2026-03-13T23:59:59+00:00"
generated_at: "2026-05-15T12:32:35.957241+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Trinseo Q4 net loss widens to $251M on $663M revenue; full year Adj EBITDA $163M down 20%

## Summary
- Net sales $663M, down 19% YoY; net loss $251M ($6.98 diluted EPS) vs $118M loss in Q4 2024.
- Adjusted EBITDA $26M flat YoY in Q4; full year Adj EBITDA $163M vs $204M prior year.
- Full year cash used in operations $102M; free cash flow -$153M; total liquidity $334M ($149M cash).
- Pre-tax restructuring charges $127M in Q4, $140M full year, from plant closures in Italy and Germany.
- Company continues negotiations with financial stakeholders to improve capital structure.

## SEC filing metadata
- accession: 0001104659-26-027521
- form_type: 8-K
- ticker: TSEOF
- cik: 0001519061
- company_name: Trinseo PLC
- filed_at: 2026-03-13T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1519061/000110465926027521/0001104659-26-027521-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1519061/000110465926027521/tse-20260313x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-027521
- JSON: https://secwatch.observer/filing/0001104659-26-027521.json
- Plain text: https://secwatch.observer/filing/0001104659-26-027521.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.