---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-174048"
form_type: "8-K"
ticker: "FUN"
cik: "0001999001"
company_name: "Six Flags Entertainment Corporation/NEW"
filed_at: "2025-08-06T23:59:59+00:00"
generated_at: "2026-05-17T20:02:44.209910+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# CEO Richard Zimmerman to step down by end of 2025; board launches search

## Summary
- President & CEO Richard Zimmerman will step down by end of 2025; will remain CEO until successor appointed.
- Transition is without cause and not due to any disagreement with the board or management.
- Board has initiated a CEO search with a leading global executive search firm; internal and external candidates.
- Executive Chairman Selim Bassoul thanked Zimmerman for leadership since the 2024 Cedar Fair merger.
- Zimmerman will continue to serve on the board of directors after stepping down as CEO.

## SEC filing metadata
- accession: 0001193125-25-174048
- form_type: 8-K
- ticker: FUN
- cik: 0001999001
- company_name: Six Flags Entertainment Corporation/NEW
- filed_at: 2025-08-06T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1999001/000119312525174048/0001193125-25-174048-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1999001/000119312525174048/d56849d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-174048
- JSON: https://secwatch.observer/filing/0001193125-25-174048.json
- Plain text: https://secwatch.observer/filing/0001193125-25-174048.txt

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