---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-21-013574"
form_type: "8-K"
ticker: "TSEOF"
cik: "0001519061"
company_name: "Trinseo PLC"
filed_at: "2021-10-27T23:59:59+00:00"
generated_at: "2026-06-28T17:26:40.334298+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Trinseo appoints Paula Cooney as SVP CHRO effective Nov 29; Heezen departs

## Summary
- Paula Cooney appointed SVP, Chief Human Resources Officer, effective November 29, 2021.
- Alice Heezen leaves to pursue other opportunities; will serve in advisory role.
- Cooney previously SVP HR at FLIR Systems and VP HR at H.B. Fuller.
- Separation agreement: Heezen receives base salary through employment end and full 2021 bonus.

## SEC filing metadata
- accession: 0001558370-21-013574
- form_type: 8-K
- ticker: TSEOF
- cik: 0001519061
- company_name: Trinseo PLC
- filed_at: 2021-10-27T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1519061/000155837021013574/0001558370-21-013574-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1519061/000155837021013574/tse-20211021x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-21-013574
- JSON: https://secwatch.observer/filing/0001558370-21-013574.json
- Plain text: https://secwatch.observer/filing/0001558370-21-013574.txt

## Key facts
- Executive change
  Paula M. Cooney was appointed as Senior Vice President, Chief Human Resources Officer at Trinseo PLC.
  - Action: will join
  - Role: Senior Vice President, Chief Human Resources Officer
  source text: Effective as of November 29, 2021, Paula M. Cooney, will join the Company as Senior Vice President, Chief Human Resources Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1519061/000155837021013574/0001558370-21-013574-index.htm
- Executive change
  Alice Heezen departed as Senior Vice President, Human Resources at Trinseo PLC.
  - Action: leaving
  - Role: Senior Vice President, Human Resources
  source text: On October 27, 2021, Trinseo PLC (the “Company”) announced that Alice Heezen, the Company’s Senior Vice President, Human Resources is leaving the Company to pursue other opportunities.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1519061/000155837021013574/0001558370-21-013574-index.htm

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