v3.26.3
Significant events for the year ended December 31, 2025 and the six-month period ended June 30, 2026 and subsequent events - For the six-month period ended June 30, 2026 (Details)
€ / shares in Units, $ / shares in Units, € in Thousands, $ in Millions
1 Months Ended 3 Months Ended 4 Months Ended 6 Months Ended 115 Months Ended 127 Months Ended
May 07, 2026
EUR (€)
€ / shares
shares
Mar. 31, 2026
EUR (€)
shares
Feb. 28, 2026
shares
Apr. 30, 2025
shares
Jan. 31, 2025
shares
Jun. 30, 2026
EUR (€)
shares
May 31, 2026
shares
Jun. 30, 2026
EUR (€)
shares
Jun. 30, 2026
EUR (€)
shares
Jun. 30, 2026
EUR (€)
shares
May 07, 2026
USD ($)
$ / shares
shares
May 04, 2026
EUR (€)
May 04, 2026
USD ($)
Apr. 30, 2026
Dec. 31, 2025
EUR (€)
shares
Jul. 28, 2025
$ / shares
Jul. 28, 2025
€ / shares
Jul. 23, 2025
Jun. 30, 2025
shares
Dec. 31, 2024
shares
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Key management personnel compensation, termination benefits | €   € 278                                    
Key Management Personnel Compensation, Contractual Severance Indemnity | €   240                                    
Purchase price of royalty certificates € 76,467                     € 76,500 $ 90              
Cash payment for royalty certificates | $                     $ 45                  
Interest-free vendor loan, royalty certificates | $                     $ 45                  
Number of shares issued (in shares)           79,817,069   79,817,069 79,817,069 79,817,069         78,536,412       63,471,933 63,347,837
Closing foreign exchange rate           1.1394   1.1394 1.1394 1.1394       1.1702       1.1726    
Royalty expense | €           € 43,205                            
Financial liabilities—non-current portion | €           137   € 137 € 137 € 137         € 30,790          
Royalty certificates, equity consideration transferred | € 38,455                                      
Royalty certificates, cash consideration transferred | € 38,233                                      
Royalty certificates, foreign exchange loss on consideration settlement | € 200                                      
Net deferred tax liabilities | €   € 6,100       0   0 0 0         5,848          
Royalty certificates                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Financial liabilities—non-current portion | € € 33,483         € 0   0 € 0 € 0         € 30,237          
Transaction costs | €               € 1,002                        
ADS                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Number of shares issued (in shares) 403,347                   403,347                  
Issue of equity, offering price per share (in dollar/euro per share) | $ / shares                     $ 111.57         $ 64.00        
Ordinary shares                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Issue of equity, offering price per share (in dollar/euro per share) | € / shares € 95.34                               € 54.58      
AGAs                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Number of instruments issued (in shares)               502,562   11,063,460                    
AGAs | Tranche 1                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Vesting percentage             50.00%                          
Vesting period             2 years                          
AGAs | Tranche 2                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Vesting percentage             25.00%                          
Vesting period             3 years                          
AGAs | Tranche 3                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Vesting percentage             25.00%                          
Vesting period             4 years                          
AGA-2026-1                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Number of instruments issued (in shares)             47,500                          
AGA-2026-2                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Number of instruments issued (in shares)             294,476                          
AGA-2026-3                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Number of instruments issued (in shares)             1,619                          
AGA-2026-4                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Number of instruments issued (in shares)             41,717                          
BSAs                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Number of instruments issued (in shares)     23,477 39,370 125,000     23,477 314,867                      
BSAs | Board member                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Vesting percentage     25.00% 25.00% 25.00%                              
Vesting period     4 years 4 years 4 years                              
Free Shares (AGA)                                        
Disclosure of terms and conditions of share-based payment arrangement [line items]                                        
Number of shares waived (in shares)   77,050                                    
Number of shares with performance conditions waived (in shares)   40,200                                    
Number of shares lapsed (in shares)   217,750