v3.26.1
Financial risk management - Liquidity risk (Details) - EUR (€)
€ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about borrowings [line items]      
Financial liabilities € 259,645 € 214,444 € 91,784
Tranche III, 2024 Financing arrangement in three tranches      
Disclosure of detailed information about borrowings [line items]      
Maximum proceeds from exercise of warrants 116,000    
Accrued interest payable on loans | Finance contract with European Investment Bank      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 2,400    
Financial liabilities 5,900    
Royalty certificates liabilities      
Disclosure of detailed information about borrowings [line items]      
Financial liabilities 51,645 29,207 6,327
Trade payables      
Disclosure of detailed information about borrowings [line items]      
Financial liabilities 26,017 32,862 37,679
Less than 1 year      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 64,812 39,183 31,422
Less than 1 year | Bank Borrowings      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 33,429 3,275 3,011
Less than 1 year | Accrued interest payable on loans      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 597 73 82
Less than 1 year | Lease liabilities      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 2,031 2,642 1,388
Less than 1 year | Trade payables      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 26,017 32,862 26,918
Less than 1 year | Other miscellaneous payables      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 2,738 331 23
Between 1 and 3 years      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 38,211 61,564 24,392
Between 1 and 3 years | Bank Borrowings      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 29,197 57,418 18,774
Between 1 and 3 years | Accrued interest payable on loans      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 1,867 1,816 3,636
Between 1 and 3 years | Lease liabilities      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 661 2,330 1,982
Between 1 and 3 years | Royalty certificates liabilities      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 6,485    
Between 3 and 5 years      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 46,707 2,006 32,919
Between 3 and 5 years | Bank Borrowings      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 1,558 2,002 29,447
Between 3 and 5 years | Lease liabilities      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows   4  
Between 3 and 5 years | Royalty certificates liabilities      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 45,150   3,472
More than 5 years      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows 485,206 423,140 55,113
More than 5 years | Bank Borrowings      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows   668 1,558
More than 5 years | Royalty certificates liabilities      
Disclosure of detailed information about borrowings [line items]      
Non-derivative financial liabilities, undiscounted cash flows € 485,206 € 422,472 € 53,556