---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-107750"
form_type: "8-K"
ticker: "TSEOF"
cik: "0001519061"
company_name: "Trinseo PLC"
filed_at: "2025-11-06T23:59:59+00:00"
generated_at: "2026-05-16T23:38:51.323462+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Trinseo Q3 net loss $110M; EPS -$3.05; initiates plant closures for $30M annual savings

## Summary
- Net sales $743M, down 14% YoY; adjusted EBITDA $30M vs $66M prior year.
- Net loss $110M ($3.05/share); adjusted net loss $87M ($2.41 adjusted EPS).
- Q4 2025 guidance: net loss $170M-$180M; adjusted EBITDA $30M-$40M; year-end liquidity ~$365M.
- Plans to cease virgin MMA production in Italy and close polystyrene plant in Germany; annualized profitability improvement ~$30M.
- Cash used in ops $22M; free cash flow -$38M; cash $114M ($2M restricted).

## SEC filing metadata
- accession: 0001104659-25-107750
- form_type: 8-K
- ticker: TSEOF
- cik: 0001519061
- company_name: Trinseo PLC
- filed_at: 2025-11-06T23:59:59+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/1519061/000110465925107750/0001104659-25-107750-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1519061/000110465925107750/tse-20251106x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-107750
- JSON: https://secwatch.observer/filing/0001104659-25-107750.json
- Plain text: https://secwatch.observer/filing/0001104659-25-107750.txt

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