---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-004782"
form_type: "8-K"
ticker: "TSEOF"
cik: "0001519061"
company_name: "Trinseo PLC"
filed_at: "2026-01-20T23:59:59+00:00"
generated_at: "2026-05-16T09:31:58.342818+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Trinseo appoints Carol Flaton and Jill Frizzley to Board, expands to 11 members

## Summary
- Board increased to 11 members; Flaton and Frizzley appointed as independent directors effective Jan 16, 2026.
- Each will receive a $50,000 monthly fee under amended consulting agreements; standard director compensation suspended.
- Appointments come amid ongoing discussions with financial stakeholders regarding capital structure.
- Flaton brings 30+ years in banking, finance, restructuring; Frizzley brings governance and strategic transaction expertise.
- Both directors are independent per NYSE rules; no material interests in reportable transactions.

## SEC filing metadata
- accession: 0001104659-26-004782
- form_type: 8-K
- ticker: TSEOF
- cik: 0001519061
- company_name: Trinseo PLC
- filed_at: 2026-01-20T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1519061/000110465926004782/0001104659-26-004782-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1519061/000110465926004782/tse-20260116x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-004782
- JSON: https://secwatch.observer/filing/0001104659-26-004782.json
- Plain text: https://secwatch.observer/filing/0001104659-26-004782.txt

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