---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-096792"
form_type: "8-K"
ticker: "TSEOF"
cik: "0001519061"
company_name: "Trinseo PLC"
filed_at: "2026-08-14T16:38:22+00:00"
generated_at: "2026-08-14T16:39:15.698928+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "medium"
source: SEC EDGAR
---

# Trinseo convenes EGM under Irish law as net assets fall to half or less of called-up share capital

## Summary
- On Aug 7, 2026, Trinseo determined net assets are half or less of its called-up share capital, triggering Irish Companies Act Section 1111.
- EGM scheduled for Sept 23, 2026 at 8:45 a.m. EST in Wayne, PA; record date Aug 12, 2026.
- No resolutions will be proposed or voted on; directors make no recommendation on measures.
- Notice mailed Aug 14, 2026; meeting is procedural to consider possible actions.
- Company ticker TSEOQ; Irish-registered PLC with net asset impairment signal.

## SEC filing metadata
- accession: 0001104659-26-096792
- form_type: 8-K
- ticker: TSEOF
- cik: 0001519061
- company_name: Trinseo PLC
- filed_at: 2026-08-14T16:38:22+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: medium
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1519061/000110465926096792/0001104659-26-096792-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1519061/000110465926096792/tse-20260814x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-096792
- JSON: https://secwatch.observer/filing/0001104659-26-096792.json
- Plain text: https://secwatch.observer/filing/0001104659-26-096792.txt

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