v3.26.1
Financial liabilities - Disclosure of Financial Liabilities Per Maturity (Details)
€ in Thousands
 1 Months Ended 12 Months Ended
Aug. 31, 2022
EUR (€)
loan
Jan. 05, 2022
EUR (€)
loan_agreement
Aug. 30, 2019
EUR (€)
Aug. 31, 2022
EUR (€)
loan
Dec. 31, 2025
EUR (€)
Dec. 31, 2024
EUR (€)
loan
Dec. 31, 2023
EUR (€)
loan
Dec. 31, 2025
loan
Dec. 31, 2025
loan_agreement
Jul. 03, 2017
EUR (€)
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         € 30,995 € 39,893 € 42,251      
Proceeds from borrowings         0 0 0      
Non cash effects : proceeds from lease liabilities and other         487 31 (589)      
Repayments of borrowings and lease liabilities         (8,911) (8,928) (1,773)      
Financial liabilities at end of period         22,571 30,995 39,893      
Current prepaid expenses         2,387 2,820 5,693      
Guarantees                    
Disclosure of financial liabilities [Line Items]                    
Current prepaid expenses         € 542 € 754 € 1,005      
PGE loan agreement, Societe Generale                    
Disclosure of financial liabilities [Line Items]                    
Borrowing, maturity       4 years            
Borrowings, interest rate 1.56%     1.56%            
Number of loans | loan       2            
PGE loan agreement, Societe Generale | Guarantees                    
Disclosure of financial liabilities [Line Items]                    
Current prepaid expenses € 877     € 877            
PGE loan agreement, BNP Paribas                    
Disclosure of financial liabilities [Line Items]                    
Borrowings, interest rate 0.95%     0.95%            
PGE loan agreement, BNP Paribas | Guarantees                    
Disclosure of financial liabilities [Line Items]                    
Current prepaid expenses € 379     € 379            
PGE loan agreement, Societe Generale and BNP Paribas                    
Disclosure of financial liabilities [Line Items]                    
Borrowing, number of loan agreement 2     2   2 2 2 2  
Borrowing, maturity 5 years       5 years          
Borrowing, grace period 1 year                  
Subtotal (excluding RoU)                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         € 30,620 € 39,060 € 40,207      
Proceeds from borrowings         0 0 0      
Non cash effects : proceeds from lease liabilities and other         8 (3) 16      
Repayments of borrowings and lease liabilities         (8,436) (8,437) (1,163)      
Financial liabilities at end of period         22,189 30,620 39,060      
PGE loan agreement, Societe Generale                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         15,125 20,000 20,000      
Proceeds from borrowings         0 0 0      
Non cash effects : proceeds from lease liabilities and other         6 9 0      
Repayments of borrowings and lease liabilities         (4,969) (4,884) 0      
Financial liabilities at end of period         10,162 15,125 20,000      
Notional amount   € 20,000                
PGE loan agreement, BNP Paribas                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         6,558 8,700 8,700      
Proceeds from borrowings         0 0 0      
Non cash effects : proceeds from lease liabilities and other         2 3 0      
Repayments of borrowings and lease liabilities         (2,168) (2,144) 0      
Financial liabilities at end of period         4,393 6,558 8,700      
Notional amount   8,700                
Lease liabilities – Real estate property                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period           14 15      
Proceeds from borrowings             0      
Non cash effects : proceeds from lease liabilities and other             (1)      
Repayments of borrowings and lease liabilities             0      
Financial liabilities at end of period             14      
State guaranteed loans - accrued interest                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         0 14        
Proceeds from borrowings         0 0        
Non cash effects : proceeds from lease liabilities and other         (14)        
Repayments of borrowings and lease liabilities         0        
Financial liabilities at end of period         0 0 14      
Property transaction (down-payment)                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities down payment at beginning of period         0 0        
Proceeds from borrowings           0        
Non cash effects : proceeds from lease liabilities and other           0        
Repayments of borrowings, down payment           0        
Financial liabilities down payment at end of period           0 0      
Loans – Equipment                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         43 99 154      
Proceeds from borrowings         0 0 0      
Non cash effects : proceeds from lease liabilities and other         0 0      
Repayments of borrowings and lease liabilities         (43) (56) (55)      
Financial liabilities at end of period         0 43 99      
Loan – Building                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         8,894 10,247 11,338      
Proceeds from borrowings         0 0 0      
Non cash effects : proceeds from lease liabilities and other         0 17      
Repayments of borrowings and lease liabilities         (1,260) (1,353) (1,108)      
Financial liabilities at end of period         7,634 8,894 10,247      
Lease liabilities – Building "Le Virage"                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         131 375 1,353      
Proceeds from borrowings         0 0 0      
Non cash effects : proceeds from lease liabilities and other         279 0 (685)      
Repayments of borrowings and lease liabilities         (273) (244) (293)      
Financial liabilities at end of period         137 131 375      
Lease liabilities – Premises Innate Inc.                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         164 246 345      
Proceeds from borrowings         0 0 0      
Non cash effects : proceeds from lease liabilities and other         (5) 15 0      
Repayments of borrowings and lease liabilities         (104) (97) (99)      
Financial liabilities at end of period         55 164 246      
Lease liabilities – Laboratory equipment                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         0 109 287      
Proceeds from borrowings         0 0 0      
Non cash effects : proceeds from lease liabilities and other         0 0      
Repayments of borrowings and lease liabilities         (109) (178)      
Financial liabilities at end of period         0 0 109      
Lease liabilities – Vehicles                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         71 85 33      
Proceeds from borrowings         0 0 0      
Non cash effects : proceeds from lease liabilities and other         (6) 19 80      
Repayments of borrowings and lease liabilities         (25) (32) (31)      
Financial liabilities at end of period         40 71 85      
Lease liabilities - Printers                    
Disclosure of financial liabilities [Line Items]                    
Financial liabilities at beginning of period         9 18 27      
Proceeds from borrowings         0 0 0      
Non cash effects : proceeds from lease liabilities and other         0 0      
Repayments of borrowings and lease liabilities         (9) (9) (9)      
Financial liabilities at end of period         € 0 € 9 € 18      
PGE loan agreement, Societe Generale and BNP Paribas                    
Disclosure of financial liabilities [Line Items]                    
Notional amount   € 28,700                
Borrowing, number of loan agreement | loan_agreement   2                
Borrowing, maturity   1 year                
Borrowing, maturity, extension period option   5 years                
Borrowing, percentage of state-guaranteed loan   90.00%                
Loan agreement with Société Générale                    
Disclosure of financial liabilities [Line Items]                    
Proceeds from borrowings     € 13,900              
Loan agreement, maximum borrowing capacity                   € 15,200