---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-032165"
form_type: "8-K"
ticker: "TSEOF"
cik: "0001519061"
company_name: "Trinseo PLC"
filed_at: "2026-03-19T23:59:59+00:00"
generated_at: "2026-05-15T09:37:19.765416+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 1.0
calibrated_materiality_score: 1.0
confidence: "high"
source: SEC EDGAR
---

# Trinseo defaults on ~$22M in interest payments; obtains limited waivers through April 2026

## Summary
- Elected not to pay ~$10M interest on 2L Notes and ~$12M on Senior Credit Agreement after grace periods expired on March 19, 2026.
- Non-payments triggered events of default and cross-defaults; waivers temporarily prevent acceleration.
- Limited waivers under SuperPriority Revolver, Senior Credit Agreement, Refinance Credit Agreement, and AR Securitization expire April 30, 2026 (AR: April 2).
- Amendment to SuperPriority Revolver removed anti-cash hoarding provisions and minimum liquidity covenant; consent fees paid in-kind.

## SEC filing metadata
- accession: 0001104659-26-032165
- form_type: 8-K
- ticker: TSEOF
- cik: 0001519061
- company_name: Trinseo PLC
- filed_at: 2026-03-19T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 1.0
- calibrated_materiality_score: 1.0
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1519061/000110465926032165/0001104659-26-032165-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1519061/000110465926032165/tm269214d2_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-032165
- JSON: https://secwatch.observer/filing/0001104659-26-032165.json
- Plain text: https://secwatch.observer/filing/0001104659-26-032165.txt

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