---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-23-016975"
form_type: "8-K/A"
ticker: "TSEOF"
cik: "0001519061"
company_name: "Trinseo PLC"
filed_at: "2023-10-30T23:59:59+00:00"
generated_at: "2026-06-09T05:54:45.122414+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Trinseo expands restructuring; closes Terneuzen styrene plant, $58-68M charges

## Summary
- Estimated restructuring charges of $58-68M for Terneuzen closure, including decommissioning and severance.
- Annual cost savings of ~$75M expected from all restructuring actions combined.
- Anticipated cash payments of ~$50M, with $35M in 2024.
- Combined with lower natural gas hedge losses, sequential profitability improvement of $100M forecast in 2024.
- Company will purchase all styrene from third parties moving forward.

## SEC filing metadata
- accession: 0001558370-23-016975
- form_type: 8-K/A
- ticker: TSEOF
- cik: 0001519061
- company_name: Trinseo PLC
- filed_at: 2023-10-30T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.05, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1519061/000155837023016975/0001558370-23-016975-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1519061/000155837023016975/tse-20230817x8ka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-23-016975
- JSON: https://secwatch.observer/filing/0001558370-23-016975.json
- Plain text: https://secwatch.observer/filing/0001558370-23-016975.txt

## Key facts
- Restructurings & Charges
  Trinseo PLC announced a restructuring with charges of $58 million to $68 million affecting Terneuzen, the Netherlands styrene plant.
  - Type: restructuring
  - Charge: $58 million to $68 million
  - Affected area: Terneuzen, the Netherlands styrene plant
  source text: plant, decommission the styrene plant assets, as well as related workforce reductions. These additional actions are expected to result in estimated restructuring charges of $58 million to $68 million, consisting of approximately $19 million to $21 million of asset-related charges, primarily for accelerated depreciation; approximately $20 million to $23 million
  evidence_url: https://www.sec.gov/Archives/edgar/data/1519061/000155837023016975/0001558370-23-016975-index.htm

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