---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-237126"
form_type: "8-K"
ticker: "FUN"
cik: "0001999001"
company_name: "Six Flags Entertainment Corporation/NEW"
filed_at: "2025-10-10T23:59:59+00:00"
generated_at: "2026-05-17T04:06:53.875229+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Executive Chairman Bassoul and Lead Director Hanrahan to step down; Marilyn Spiegel named Chair

## Summary
- Selim Bassoul steps down as Executive Chairman and from Board effective Dec 31, 2025; will consult on Six Flags Qiddiya City.
- Lead Independent Director Daniel J. Hanrahan also steps down from Board effective Dec 31, 2025.
- Marilyn Spiegel elected non-executive Chair of Board effective Jan 1, 2026; Board will comprise 10 directors.
- Company has initiated process to identify the next CEO.

## SEC filing metadata
- accession: 0001193125-25-237126
- form_type: 8-K
- ticker: FUN
- cik: 0001999001
- company_name: Six Flags Entertainment Corporation/NEW
- filed_at: 2025-10-10T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1999001/000119312525237126/0001193125-25-237126-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1999001/000119312525237126/d55938d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-237126
- JSON: https://secwatch.observer/filing/0001193125-25-237126.json
- Plain text: https://secwatch.observer/filing/0001193125-25-237126.txt

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