v3.26.3
Revenue and other income - Disclosure of change in deferred revenue and collaboration liabilities (Details) - EUR (€)
€ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Current    
Foreign exchange impact € 1,186 € (5,592)
Reclassification 1,131 6,610
Non-Current    
Foreign exchange impact 0 0
Reclassification (1,131) (6,610)
Total    
Foreign exchange impact 1,186 (5,592)
Reclassification 0 0
Deferred tax liabilities / Deferred revenue    
Total    
Contract liabilities at beginning of period 2,826 3,441
Revenue for the six months period (2,699) (254)
Contract liabilities at end of period 127 3,191
Deferred tax liabilities / Deferred revenue | 2015 monalizumab agreement, with AstraZeneca    
Current    
Current contract liabilities at the beginning of period 0 215
Revenue for the six months period 0 (56)
Transfer from / (to) collaboration liabilities 0 4
Current contract liabilities at end of period 0 163
Non-Current    
Non-current contract liabilities at the beginning of period 0 0
Revenue for the six months period 0
Transfer from / (to) collaboration liabilities 0
Non-current contract liabilities s at end of period 0 0
Total    
Contract liabilities at beginning of period 0 215
Revenue for the six months period 0 (56)
Transfer from / (to) collaboration liabilities 0 4
Contract liabilities at end of period 0 163
Deferred tax liabilities / Deferred revenue | Agreement with Sanofi, 2022    
Current    
Current contract liabilities at the beginning of period 2,826 400
Additions 0 198
Deductions (199) (198)
Current contract liabilities at end of period 2,627 400
Non-Current    
Non-current contract liabilities at the beginning of period 0 2,825
Additions 0 (198)
Deductions 0 0
Non-current contract liabilities s at end of period 0 2,627
Total    
Contract liabilities at beginning of period 2,826 3,225
Additions 0 0
Deductions (199) (198)
Contract liabilities at end of period 2,627 3,027
Collaboration liabilities | 2015 monalizumab agreement, with AstraZeneca    
Current    
Current contract liabilities at the beginning of period 6,501 7,443
Additions 177 0
Deductions 0 (1,679)
Current contract liabilities at end of period 8,995 6,782
Non-Current    
Non-current contract liabilities at the beginning of period 31,748 41,128
Additions 0 0
Deductions 0 0
Non-current contract liabilities s at end of period 30,617 34,518
Total    
Contract liabilities at beginning of period 38,249 48,571
Additions 177 0
Deductions 0 (1,679)
Contract liabilities at end of period € 39,612 € 41,300