Six Flags Entertainment Corporation/NEW

Q: Jun 28 2026

Q: Mar 29 2026

FY: Dec 31 2025

Q: Sep 28 2025

Q: Jun 29 2025

Q: Mar 30 2025

FY: Dec 31 2024

FY: Dec 31 2024

Q: Sep 29 2024

Q: Jun 30 2024

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Submission of Matters to a Vote of Security Holders

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Entry into a Material Definitive Agreement

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Regulation FD Disclosure

Regulation FD Disclosure

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Entry into a Material Definitive Agreement

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

Regulation FD Disclosure

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Other Events

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Definitive Proxy Statement

Definitive Proxy Statement

DARLINGTON PARTNERS CAPITAL MANAGEMENT, LP

Reilly John T

Bennett Christopher Lawrence

Hoffman David R.

Walia Ashok

BlackRock, Inc.

Pauls Mark

Tastepe Tayfun

Bennett Christopher Lawrence

Walia Ashok

Reilly John T

Martin Ziegenfuss Amy

Hoffman David R.

Walia Ashok

JAFFER REHAN

Martin Ziegenfuss Amy

Bennett Christopher Lawrence

JAFFER REHAN

Spiegel Marilyn G

DARLINGTON PARTNERS CAPITAL MANAGEMENT, LP

Annual Report Scanned (Paper)

Annual Report Scanned (Paper)

9.01

1.01,1.02,2.01,2.03,3.01,3.03,5.01,5.02,5.03,7.01,9.01

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC