v3.26.1
UNAUDITED CONSOLIDATED STATEMENTS OF EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Shares of Common Stock Outstanding
Additional Paid-in-Capital
Retained Deficit
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Ending balance (in shares)   100,350      
Ending balance $ 2,041,863 $ 1,004 $ 2,207,410 $ (164,271) $ (2,280)
Beginning balance (in shares) at Dec. 31, 2024   100,350      
Beginning balance at Dec. 31, 2024 2,041,863 $ 1,004 2,207,410 (164,271) (2,280)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss attributable to Six Flags Entertainment Corporation (319,366)     (319,366)  
Equity-based compensation (in shares)   904      
Equity-based compensation 6,767 $ 9 6,758    
Foreign currency translation adjustment, net of tax 45,128       45,128
Defined benefit retirement plan, net of tax 409       409
Ending balance (in shares)   101,074      
Ending balance 1,833,780 $ 1,010 2,209,825 (383,989) 6,934
Beginning balance (in shares) at Mar. 30, 2025   101,074      
Beginning balance at Mar. 30, 2025 1,833,780 $ 1,010 2,209,825 (383,989) 6,934
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss attributable to Six Flags Entertainment Corporation (99,648)     (99,648)  
Equity-based compensation (in shares)   180      
Equity-based compensation 4,346 $ 3 4,343    
Foreign currency translation adjustment, net of tax 36,090       36,090
Defined benefit retirement plan, net of tax $ 233       233
Ending balance (in shares) 101,254 101,254      
Ending balance $ 1,774,801 $ 1,013 2,214,168 (483,637) 43,257
Ending balance (in shares) 101,696 101,696      
Ending balance $ 549,757 $ 1,017 2,245,553 (1,763,369) 66,556
Beginning balance (in shares) at Dec. 31, 2025 101,696 101,696      
Beginning balance at Dec. 31, 2025 $ 549,757 $ 1,017 2,245,553 (1,763,369) 66,556
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss attributable to Six Flags Entertainment Corporation (471,220)     (471,220)  
Equity-based compensation (in shares)   617      
Equity-based compensation 14,633 $ 6 14,627    
Foreign currency translation adjustment, net of tax 21,557       21,557
Ending balance (in shares)   101,988      
Ending balance 279,226 $ 1,017 2,245,290 (2,031,969) 64,888
Beginning balance (in shares) at Mar. 29, 2026   101,988      
Beginning balance at Mar. 29, 2026 279,226 $ 1,017 2,245,290 (2,031,969) 64,888
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss attributable to Six Flags Entertainment Corporation (202,620)     (202,620)  
Equity-based compensation (in shares)   325      
Equity-based compensation 14,896 $ 6 14,890    
Foreign currency translation adjustment, net of tax $ 23,225       23,225
Ending balance (in shares) 102,313 102,313      
Ending balance $ 114,727 $ 1,023 $ 2,260,180 $ (2,234,589) $ 88,113