2 unchanged sentences
(b) Not applicable.
−Removed: (c) During the three months ended June 29, 2025, no director or officer adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement," as each term is defined in Item 408 of Regulation S-K.
+Added: (c) During the three months ended September 28, 2025, no director or officer adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement," as each term is defined in Item 408 of Regulation S-K.
Exhibit Number Description of Exhibit
−Removed: Second Incremental Assumption Agreement, dated as of June 27, 2025, by and among, inter alios, the Company, certain subsidiaries of the Company party thereto as subsidiary guarantors, the lender party thereto and Wells Fargo Bank, National Association, as administrative agent and collateral agent.
+Added: Cooperation Agreement, by and among Six Flags Entertainment Corporation, Sachem Head Capital Management, dated as of October 17, 2025.
Incorporated herein by reference to Exhibit 10.1 to the Combined Company's Form 8-K (File No.
−Removed: 001-42157) filed on June 27, 2025.
−Removed: Executive Release Agreement, dated June 18, 2025, by and between the Company and Monica Sauls.
−Removed: 2024 Omnibus Incentive Plan Form of Deferred Restricted Stock Unit Award Agreement for certain awards.
+Added: 001-42157) filed on October 17, 2025.
+Added: Executive Release Agreement, dated October 9, 2025, by and between the Company and Richard Zimmerman.
Subsidiary Guarantors and Issuers of Guaranteed Securities.
5 unchanged sentences
1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
−Removed: 101 The following materials from the Combined Company's Quarterly Report on Form 10-Q for the quarter ended June 29, 2025 formatted in Inline XBRL:
−Removed: (i) the Unaudited Condensed Consolidated Statements of Operations and Comprehensive Income (Loss), (ii) the Unaudited Condensed Consolidated Balance Sheets, (iii) the Unaudited Condensed Consolidated Statements of Cash Flow, (iv) the Unaudited Condensed Consolidated Statements of Equity, and (v) related notes, tagged as blocks of text and including detailed tags.
−Removed: 104 The cover page from the Combined Company's Quarterly Report on Form 10-Q for the quarter ended June 29, 2025 formatted in Inline XBRL (included as Exhibit 101).
+Added: 101 The following materials from the Combined Company's Quarterly Report on Form 10-Q for the quarter ended September 28, 2025 formatted in Inline XBRL:
+Added: (i) the Unaudited Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income, (ii) the Unaudited Condensed Consolidated Balance Sheets, (iii) the Unaudited Condensed Consolidated Statements of Cash Flow, (iv) the Unaudited Condensed Consolidated Statements of Equity, and (v) related notes, tagged as blocks of text and including detailed tags.
+Added: 104 The cover page from the Combined Company's Quarterly Report on Form 10-Q for the quarter ended September 28, 2025 formatted in Inline XBRL (included as Exhibit 101).
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
SIX FLAGS ENTERTAINMENT CORPORATION
−Removed: August 6, 2025 /s/ Richard A.
+Added: November 7, 2025 /s/ Richard A.
President and Chief Executive Officer
−Removed: August 6, 2025 /s/ Brian C.
+Added: November 7, 2025 /s/ Brian C.
Chief Financial Officer
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.