---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-24-129105"
form_type: "8-K"
ticker: "TSEOF"
cik: "0001519061"
company_name: "Trinseo PLC"
filed_at: "2024-12-17T23:59:59+00:00"
generated_at: "2026-05-29T02:22:42.754089+00:00"
event_type: "debt"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Trinseo launches exchange offer for $447M 5.125% notes due 2029 at 85% of par

## Summary
- Exchange offer: $1,000 existing 5.125% notes due 2029 for $850 in new 7.625% second lien secured notes due 2029.
- Consents sought to eliminate restrictive covenants; holders representing ~74% of notes already support the offer.
- Offer expires Jan 15, 2025; withdrawal deadline Jan 2, 2025; conditioned on >50% participation.
- LuxCo merger completed; credit agreements amended to permit the exchange and related transactions.
- New notes are guaranteed by Trinseo PLC and certain subs; secured by second-priority liens on specified assets.

## SEC filing metadata
- accession: 0001104659-24-129105
- form_type: 8-K
- ticker: TSEOF
- cik: 0001519061
- company_name: Trinseo PLC
- filed_at: 2024-12-17T23:59:59+00:00
- event_type: debt
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1519061/000110465924129105/0001104659-24-129105-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1519061/000110465924129105/tm2431127d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-24-129105
- JSON: https://secwatch.observer/filing/0001104659-24-129105.json
- Plain text: https://secwatch.observer/filing/0001104659-24-129105.txt

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