---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-026175"
form_type: "8-K"
ticker: "TSEOF"
cik: "0001519061"
company_name: "Trinseo PLC"
filed_at: "2025-03-20T23:59:59+00:00"
generated_at: "2026-05-24T10:08:03.033270+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Trinseo fully redeems remaining 5.125% senior notes due 2029, discharges indenture

## Summary
- On March 20, 2025, Trinseo subsidiaries redeemed all $553,000 aggregate of outstanding 5.125% senior notes due 2029.
- Redemption covers principal, redemption premium, and interest to the Redemption Date; indenture is satisfied and discharged.
- Funds were irrevocably deposited with the trustee prior to the redemption date.

## SEC filing metadata
- accession: 0001104659-25-026175
- form_type: 8-K
- ticker: TSEOF
- cik: 0001519061
- company_name: Trinseo PLC
- filed_at: 2025-03-20T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 1.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1519061/000110465925026175/0001104659-25-026175-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1519061/000110465925026175/tm259537d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-026175
- JSON: https://secwatch.observer/filing/0001104659-25-026175.json
- Plain text: https://secwatch.observer/filing/0001104659-25-026175.txt

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