---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-23-015932"
form_type: "8-K"
ticker: "TSEOF"
cik: "0001519061"
company_name: "Trinseo PLC"
filed_at: "2023-09-22T23:59:59+00:00"
generated_at: "2026-06-10T09:39:08.117985+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Trinseo appoints Roger Greene as VP, Controller and Principal Accounting Officer

## Summary
- Roger Greene named VP, Controller and Principal Accounting Officer, effective Sept 25, 2023.
- He succeeds David Stasse (CFO) who served as interim principal accounting officer.
- Greene previously served as VP, Chief Audit Executive at Corteva Agriscience.
- No family relationships or arrangements with any director or executive officer.

## SEC filing metadata
- accession: 0001558370-23-015932
- form_type: 8-K
- ticker: TSEOF
- cik: 0001519061
- company_name: Trinseo PLC
- filed_at: 2023-09-22T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1519061/000155837023015932/0001558370-23-015932-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1519061/000155837023015932/tse-20230921x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-23-015932
- JSON: https://secwatch.observer/filing/0001558370-23-015932.json
- Plain text: https://secwatch.observer/filing/0001558370-23-015932.txt

## Key facts
- Executive change
  Roger Greene was appointed as Vice President, Controller and Principal Accounting Officer at Trinseo PLC.
  - Action: appointed
  - Role: Vice President, Controller and Principal Accounting Officer
  source text: On September 21, 2023, Trinseo PLC (the “Company”) appointed Roger Greene, age 47, as Vice President, Controller and Principal Accounting Officer of the Company, effective September 25, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1519061/000155837023015932/0001558370-23-015932-index.htm
- Executive change
  David Stasse changed role as Executive Vice President and Chief Financial Officer at Trinseo PLC.
  - Action: will no longer serve as interim principal accounting officer
  - Role: Executive Vice President and Chief Financial Officer
  source text: David Stasse, the Company’s Executive Vice President and Chief Financial Officer, will no longer serve as interim principal accounting officer following Mr. Greene’s appointment.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1519061/000155837023015932/0001558370-23-015932-index.htm

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