2 unchanged sentences
(b) Not applicable.
−Removed: (c) During the three months ended March 29, 2026, 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 June 28, 2026, 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: Equity Purchase Agreement, dated as of March 5, 2026, between Six Flags Entertainment Corporation, EPR Properties and EP OPCO WOFR, LLC.
−Removed: Equity Purchase Agreement, dated as March 5, 2026, between Parc Six Flags Montreal, S.E.C., Funtime, Inc., Six Flags Theme Parks Inc., Six Flags Entertainment Corporation, EPR VC Acquisition, ULC and La Ronde Operations, Inc.
−Removed: Indenture, dated as of January 14, 2026, by and among Six Flags Entertainment Corporation, Canada’s Wonderland Company, Millennium Operations LLC, each of the guarantors party thereto and U.S.
−Removed: Bank Trust Company, National Association, as trustee.
+Added: Separation letter agreement, dated May 18, 2026, by and with Six Flags Entertainment Corporation and Brian Nurse.
+Added: Separation letter agreement, dated May 20, 2026, by and with Six Flags Entertainment Corporation and Christian Dieckmann.
+Added: Separation letter agreement, dated May 22, 2026, by and with Six Flags Entertainment Corporation and Brian Witherow.
+Added: Second Amendment to Employment Agreement, dated June 25, 2026, between Six Flags Entertainment Corporation and Tim Fisher.
+Added: Employment Agreement, dated May 6, 2026, by and between Six Flags Entertainment Corporation and Christopher Bennett.
+Added: Employment Agreement, dated May 6, 2026, by and between Six Flags Entertainment Corporation and Amy Martin Ziegenfuss.
+Added: Employment Agreement, dated May 21, 2026, by and between Six Flags Entertainment Corporation and Ashok Walia.
+Added: Employment Agreement, dated July 1, 2026, by and between Six Flags Entertainment Corporation and Mark Pauls.
+Added: 2024 Omnibus Incentive Plan Form of Restricted Stock Unit Agreement and Declaration (2026 Employment Agreement/Severance Plan Version).
+Added: 2024 Omnibus Incentive Plan Form of Short-Term Incentive Program Award Agreement (2026 Employment Agreement Version).
+Added: 2024 Omnibus Incentive Plan Form of Short-Term Incentive Program Award Agreement (2026 Severance Plan Version).
+Added: Cooperation Agreement, by and between Six Flags Entertainment Corporation and H Partners Capital Management, LLC, dated as of May 19, 2026.
Incorporated herein by reference to Exhibit 10.1 to the Company's Form 8-K (File No.
−Removed: 001-42157) filed on January 14, 2026.
−Removed: Employment Agreement, effective as of March 24, 2026, by and between Six Flags Entertainment Corporation and Richard Haddrill.
−Removed: 2024 Omnibus Incentive Plan Form of Restricted Stock Award Agreement and Declaration (Haddrill Version).
−Removed: 2024 Omnibus Incentive Plan Form of Performance Stock Unit Award Declaration (Haddrill Version).
−Removed: 2024 Omnibus Incentive Plan Form of Short-Term Incentive Plan Award Agreement (2026 Employment Agreement Version).
−Removed: Consultant Agreement, dated January 1, 2026, by and between Six Flags Entertainment Corporation and Selim Bassoul.
−Removed: Incorporated herein by reference to Exhibit 10.4 (iii) to the Company's Form 10-K (file No.
−Removed: 001-42157) filed on February 26, 2026.
+Added: 001-42157) filed on May 20, 2026.
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 Company's Quarterly Report on Form 10-Q for the quarter ended March 29, 2026 formatted in Inline XBRL:
+Added: 101 The following materials from the Company's Quarterly Report on Form 10-Q for the quarter ended June 28, 2026 formatted in Inline XBRL:
(i) the Unaudited Consolidated Statements of Operations and Comprehensive Loss, (ii) the Unaudited Consolidated Balance Sheets, (iii) the Unaudited Consolidated Statements of Cash Flow, (iv) the Unaudited Consolidated Statements of Equity, and (v) related notes, tagged as blocks of text and including detailed tags.
−Removed: 104 The cover page from the Company's Quarterly Report on Form 10-Q for the quarter ended March 29, 2026 formatted in Inline XBRL (included as Exhibit 101).
+Added: 104 The cover page from the Company's Quarterly Report on Form 10-Q for the quarter ended June 28, 2026 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: May 7, 2026 /s/ John Reilly
+Added: August 6, 2026 /s/ John Reilly
President and Chief Executive Officer
−Removed: May 7, 2026 /s/ Brian Witherow
−Removed: Brian Witherow
+Added: August 6, 2026 /s/ Ash Walia
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.