v3.26.1
Related-party transactions (Details) - EUR (€)
12 Months Ended
Dec. 31, 2025
May 02, 2025
Dec. 11, 2024
Dec. 20, 2023
Pierre Broqua        
Related-party transactions        
Amount payable to related parties for patent intellectual property rights unconditional amount       € 50,000
Amount payable to related parties of patent intellectual property, conditional amount       50,000
Expenses under social security agreement in connection with employee's departure € 0      
Pierre Broqua | Maximum        
Related-party transactions        
Amount payable to related parties for transfer of patent intellectual property rights       € 100,000
Pierre Broqua | Invention's patentability        
Related-party transactions        
Amount payable to related party     € 500  
Pierre Broqua | Patenting        
Related-party transactions        
Amount payable to related party     5,000  
Pierre Broqua | Marketing authorization        
Related-party transactions        
Amount payable to related party     20,000  
Pierre Broqua | Commercial exploitation        
Related-party transactions        
Amount payable to related party     € 30,000  
Frederic Cren        
Related-party transactions        
Expenses under social security agreement in connection with employee's departure 0      
Expenses under transactional memorandum of understanding in connection with employee's departure € 961,040      
Samsara Bio Capital L.p        
Related-party transactions        
Number of shares subscribed   6,637,037    
Subscription price of shares and prefunded warrants   € 8,959,999.95