v3.26.1
Unaudited Condensed Consolidated Statements of Temporary Equity and Shareholders' Equity - USD ($)
$ in Thousands
Total
Balance prior to the Transactions
Effects of the Transactions
Activity subsequent to the Transactions
Class A
Class B
Quantinuum (Cayman) Shareholders' Equity
Balance prior to the Transactions
Quantinuum (Cayman) Shareholders' Equity
Effects of the Transactions
Common Stock
Common Stock
Class A
Effects of the Transactions
Common Stock
Class A
Activity subsequent to the Transactions
Common Stock
Class B
Effects of the Transactions
Common Stock
Class B
Activity subsequent to the Transactions
Additional paid-in-capital
Additional paid-in-capital
Effects of the Transactions
Additional paid-in-capital
Activity subsequent to the Transactions
Accumulated other comprehensive (loss)/income
Accumulated other comprehensive (loss)/income
Effects of the Transactions
Accumulated other comprehensive (loss)/income
Activity subsequent to the Transactions
Accumulated deficit
Accumulated deficit
Effects of the Transactions
Accumulated deficit
Activity subsequent to the Transactions
Non-controlling interest
Effects of the Transactions
Non-controlling interest
Activity subsequent to the Transactions
Beginning balance at Dec. 31, 2024 $ 689,107                                              
Ending balance at Mar. 31, 2025 689,107                                              
Beginning balance at Dec. 31, 2024 309,526               $ 30         $ 917,902     $ (56,203)     $ (552,203)        
Beginning balance (in shares) at Dec. 31, 2024                 300,000,001                              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                
Net loss (30,489)                                     (30,489)        
Foreign exchange translation adjustment 25,707                               25,707              
Ending balance (in shares) at Mar. 31, 2025                 300,000,001                              
Ending balance at Mar. 31, 2025 304,744               $ 30         917,902     (30,496)     (582,692)        
Beginning balance at Dec. 31, 2024 689,107                                              
Ending balance at Jun. 30, 2025 689,107                                              
Beginning balance at Dec. 31, 2024 309,526               $ 30         917,902     (56,203)     (552,203)        
Beginning balance (in shares) at Dec. 31, 2024                 300,000,001                              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                
Net loss (87,406)                                              
Foreign exchange translation adjustment 77,025                                              
Ending balance (in shares) at Jun. 30, 2025                 300,000,001                              
Ending balance at Jun. 30, 2025 299,145               $ 30         917,902     20,822     (639,609)        
Beginning balance at Mar. 31, 2025 689,107                                              
Ending balance at Jun. 30, 2025 689,107                                              
Beginning balance at Mar. 31, 2025 304,744               $ 30         917,902     (30,496)     (582,692)        
Beginning balance (in shares) at Mar. 31, 2025                 300,000,001                              
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                
Net loss (56,917)                                     (56,917)        
Foreign exchange translation adjustment 51,318                               51,318              
Ending balance (in shares) at Jun. 30, 2025                 300,000,001                              
Ending balance at Jun. 30, 2025 299,145               $ 30         $ 917,902     $ 20,822     $ (639,609)        
Beginning balance at Dec. 31, 2025   $ 1,513,941                                            
Ending balance at Mar. 31, 2026   1,513,941                                            
Beginning balance at Dec. 31, 2025 173,652 173,652         $ 173,652                                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                
Net loss   (136,593)         (136,593)                                  
Foreign exchange translation adjustment   (11,415)         (11,415)                                  
Ending balance at Mar. 31, 2026   25,644         25,644                                  
Beginning balance at Dec. 31, 2025   1,513,941                                            
Beginning balance at Dec. 31, 2025 173,652 173,652         173,652                                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                
Net loss (733,113)                                              
Foreign exchange translation adjustment (15,711)                                              
Warrant exercise 150,215                                              
Ending balance (in shares) at Jun. 30, 2026         36,134,196 226,771,877         36,134,196   226,771,877                      
Ending balance at Jun. 30, 2026 3,005,354     $ 3,005,354             $ 3   $ 23     $ 480,105     $ (1,631)     $ (65,418)   $ 2,592,272
Beginning balance at Mar. 31, 2026   1,513,941                                            
Ending balance at Jun. 04, 2026   1,513,941                                            
Beginning balance at Mar. 31, 2026   25,644         25,644                                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                
Net loss   (110,087)         (110,087)                                  
Foreign exchange translation adjustment   9,669         9,669                                  
Ending balance at Jun. 04, 2026   (74,774)         (74,774)                                  
Beginning balance at Mar. 31, 2026   1,513,941                                            
Beginning balance at Mar. 31, 2026   25,644         25,644                                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                
Net loss (596,520)                                              
Foreign exchange translation adjustment (4,296)                                              
Ending balance (in shares) at Jun. 30, 2026         36,134,196 226,771,877         36,134,196   226,771,877                      
Ending balance at Jun. 30, 2026 3,005,354     3,005,354             $ 3   $ 23     480,105     (1,631)     (65,418)   2,592,272
Beginning balance at Jun. 04, 2026   1,513,941                                            
Increase (Decrease) in Temporary Equity [Roll Forward]                                                
Effect of Reorganization Transactions     $ (1,513,941)                                          
Beginning balance at Jun. 04, 2026   $ (74,774)         $ (74,774)                                  
Increase (Decrease) in Stockholders' Equity [Roll Forward]                                                
Net loss       (54,782)                                   (7,367)   (47,415)
Foreign exchange translation adjustment       (13,965)                             (1,878)         (12,087)
Effect of Reorganization Transactions (in shares)                   1,963,991   228,107,842                        
Effect of Reorganization Transactions     1,513,963         $ (75,441)       $ 23     $ 1,587,585     $ 1,796            
Stock-based compensation expense recognized in connection with the Transactions     (431,651)                                   $ (58,051)   $ (373,600)  
Stock-based compensation (in shares)                   3,180,065                            
Stock-based compensation     300,975 15,802                     300,975 2,172               13,630
Warrant exercise 150,215   150,215                                          
Issuance of unvested legally outstanding shares (in shares)                   1,154,175                            
Issuance of Class A common stock sold in initial public offering and the underwriters' option to purchase additional shares of Class A common stock, net of underwriting discounts, commissions and offering costs (in shares)                   28,500,000                            
Issuance of Class A common stock sold in initial public offering and the underwriters' option to purchase additional shares of Class A common stock, net of underwriting discounts, commissions and offering costs     1,599,571             $ 3         1,599,568                  
Allocation of equity to Non-controlling interests     $ 0                       $ (3,024,911)     $ (1,558)         $ 3,026,469  
Exchange of Non-controlling interests and cancellation of Class B Common stock (in shares)                     1,335,965   (1,335,965)                      
Non-controlling interest adjustment for changes in proportionate ownership in Quantinuum Holdings       0                       14,716     9         (14,725)
Ending balance (in shares) at Jun. 30, 2026         36,134,196 226,771,877         36,134,196   226,771,877                      
Ending balance at Jun. 30, 2026 $ 3,005,354     $ 3,005,354             $ 3   $ 23     $ 480,105     $ (1,631)     $ (65,418)   $ 2,592,272