v3.26.1
Trade receivables and others (Details)
€ in Thousands
1 Months Ended 12 Months Ended
Aug. 31, 2022
loan
Jul. 31, 2024
EUR (€)
Feb. 29, 2024
EUR (€)
Dec. 31, 2025
EUR (€)
Dec. 31, 2024
EUR (€)
loan
Dec. 31, 2023
EUR (€)
loan
Dec. 31, 2025
Dec. 31, 2025
loan
Dec. 31, 2025
loan_agreement
Disclosure of financial assets [Line Items]                  
Other receivables       € 117 € 89 € 104      
Research tax credit       6,174 0 29,755      
Other tax credits       19 24 360      
Prepaid expenses       2,387 2,820 5,693      
VAT refund       909 880 1,037      
Trade account receivables       391 650 15,233      
Prepayments made to suppliers       2,402 509 3,374      
Receivables and others - current       12,400 4,972 55,557      
Prepayments made to suppliers       0 1,362 0      
Research tax credit       0 7,464 9,800      
Prepaid expenses       251 502 754      
Receivables and others - non-current       251 9,328 10,554      
Trade receivables and others       12,651 € 14,300 66,111      
Income from research tax credit 2019     € 16,737            
Income from research tax credit 2020   € 12,755              
Income from research tax credit 2023           9,800      
Proportion of nominal value deconsolidated receivables, CIR 2023         95.00%   95.00%    
Withholding rate realized by CIR         5.00%   5.00%    
CIR retention, maturity         3 years        
Withholding tax - CIR reclassified under non-current financial assets       388 € 490        
Impairment loss recognised in profit or loss, trade receivables       € 0          
IPH6101 agreement, with Sanofi                  
Disclosure of financial assets [Line Items]                  
Trade account receivables           € 15,000      
PGE loan agreement, Societe Generale and BNP Paribas                  
Disclosure of financial assets [Line Items]                  
Borrowing, number of loan agreement 2       2 2   2 2
Borrowing, maturity 5 years     5 years          
Guarantees                  
Disclosure of financial assets [Line Items]                  
Prepaid expenses       € 542 € 754 € 1,005