secwatch.observer — SEC 8-K summary
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Issuer:     Six Flags Entertainment Corporation/NEW (FUN)
CIK:        0001999001
Form:       8-K
Filed at:   2026-03-25T23:59:59+00:00
Accession:  0001193125-26-124392
Event type: leadership
Sentiment:  neutral
Materiality: 0.70
Item codes: 5.02, 7.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Six Flags appoints Richard Haddrill as Executive Chairman; board expands to 11
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- Richard Haddrill appointed Executive Chair, effective March 24, 2026; Marilyn Spiegel named Lead Independent Director.
- Haddrill brings experience as former Executive Vice Chairman of Scientific Games and CEO of Bally Technologies.
- Employment agreement: three-year term, $500,000 base salary, one-time equity grant of 217,797 RSA and 373,367 PSU.
- Seven new directors added to board since summer 2025; board temporarily expands to 11 members.
- Jennifer Mason will not stand for re-election at 2026 annual meeting, reducing board to 10.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1999001/000119312526124392/0001193125-26-124392-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1999001/000119312526124392/d20705d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-26-124392

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