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Financial assets and liabilities (Details) € in Thousands |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2024 EUR (€) tranche | Dec. 31, 2023 EUR (€) | Aug. 22, 2023 EUR (€) | Dec. 31, 2025 EUR (€) | Dec. 31, 2024 EUR (€) | Dec. 31, 2023 EUR (€)
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets | € 205,228 | € 327,062 |  | € 584,341 | € 205,228 | € 327,062
Financial assets, at fair value | 176,754 | 301,500 |  | 557,595 | 176,754 | 301,500
Financial liabilities, at fair value | € 162,256 | € 125,191 |  | € 141,409 | € 162,256 | € 125,191
Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Percentage of reasonably possible increase in unobservable input, liabilities | 1.00% | 1.00% | 1.00% |  | 1.00% | 1.00%
Credit spread | Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Percentage of reasonably possible increase in unobservable input, assets | 1.00% | 1.00% |  | 1.00% | 1.00% | 1.00%
Percentage of reasonably possible increase in unobservable input, liabilities |  |  |  | 1.00% |  |
Financial liabilities-non current portion |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities, at fair value | € 73,497 | € 40,622 |  | € 102,555 | € 73,497 | € 40,622
Kreos & Claret Financing, Tranche A,B and C |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Number of tranches | tranche | 3 |  |  |  |  |
Financial liabilities-current portion |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities, at fair value | € 44,935 | 37,348 |  | 1,302 | 44,935 | 37,348
Trade payables and other current liabilities |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities, at fair value | 43,824 | 47,221 |  | 37,552 | 43,824 | 47,221
LIABILITIES AT FAIR VALUE THROUGH PROFIT AND LOSS |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities, at fair value | 24,803 | 30,037 |  | 0 | 24,803 | 30,037
LIABILITIES AT FAIR VALUE THROUGH PROFIT AND LOSS | Financial liabilities-non current portion |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities, at fair value | 3,620 | 18,506 |  | 0 | 3,620 | 18,506
LIABILITIES AT FAIR VALUE THROUGH PROFIT AND LOSS | Financial liabilities-current portion |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities, at fair value | 21,183 | 11,531 |  | 0 | 21,183 | 11,531
LIABILITIES AT FAIR VALUE THROUGH PROFIT AND LOSS | Trade payables and other current liabilities |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities, at fair value | 0 | 0 |  | 0 | 0 | 0
LIABILITIES AT AMORTIZED COST |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities, at fair value | 137,453 | 95,154 |  | 141,409 | 137,453 | 95,154
LIABILITIES AT AMORTIZED COST | Financial liabilities-non current portion |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities, at fair value | 69,877 | 42,768 |  | 102,555 | 69,877 | 42,768
LIABILITIES AT AMORTIZED COST | Financial liabilities-current portion |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities, at fair value | 23,752 | 5,165 |  | 1,302 | 23,752 | 5,165
LIABILITIES AT AMORTIZED COST | Trade payables and other current liabilities |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities, at fair value | 43,824 | 47,221 |  | 37,552 | 43,824 | 47,221
ASSETS AT FAIR VALUE THROUGH PROFIT AND LOSS |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets, at fair value | 0 | 0 |  | 437,031 | 0 | 0
ASSETS AT AMORTIZED COST |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets, at fair value | 176,754 | 301,500 |  | 120,565 | 176,754 | 301,500
Recurring fair value measurement |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets | 177,537 | 301,161 |  | 557,226 | 177,537 | 301,161
Financial liabilities | 157,828 | 124,266 |  | 69,644 | 157,828 | 124,266
Recurring fair value measurement | Financial liabilities-non current portion |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities | € 69,069 | € 39,697 |  | 30,790 | € 69,069 | € 39,697
Recurring fair value measurement | Kreos & Claret Financing, Tranche A,B and C | Credit spread | Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Significant unobservable input, liabilities | 0.0750 | 0.0900 | 0.0960 |  | 0.0750 | 0.0900
Decrease in financial liabilities at fair value | € 958 |  |  |  |  |
Recurring fair value measurement | Kreos & Claret convertible notes (OCABSA) | Credit spread | Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Decrease in financial liabilities at fair value |  | € 538 | € 624 |  |  |
Recurring fair value measurement | Conditional advances and PGE loan | Credit spread | Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Significant unobservable input, liabilities | 0.0730 | 0.0900 |  |  | 0.0730 | 0.0900
Recurring fair value measurement | PGE | Credit spread | Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Decrease in financial liabilities at fair value | € 21 | € 39 |  |  |  |
Recurring fair value measurement | RNP-VIR conditional advance | Credit spread | Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Decrease in financial liabilities at fair value |  | 15 |  |  |  |
Recurring fair value measurement | CARENA conditional advance | Credit spread | Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Decrease in financial liabilities at fair value |  | 37 |  |  |  |
Recurring fair value measurement | Ebola conditional advance | Credit spread | Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Decrease in financial liabilities at fair value |  | 1 |  |  |  |
Recurring fair value measurement | Financial liabilities-current portion |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities | 44,935 | 37,348 |  | 1,302 | € 44,935 | € 37,348
Recurring fair value measurement | Trade payables and other current liabilities |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial liabilities | 43,824 | 47,221 |  | 37,552 | 43,824 | 47,221
Other financial assets |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets, at fair value | 12,690 | 22,394 |  | 27,141 | 12,690 | 22,394
Other financial assets | ASSETS AT FAIR VALUE THROUGH PROFIT AND LOSS |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets, at fair value | 0 | 0 |  | 0 | 0 | 0
Other financial assets | ASSETS AT AMORTIZED COST |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets, at fair value | 12,690 | 22,394 |  | 27,141 | 12,690 | 22,394
Other financial assets | Recurring fair value measurement |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets | 13,473 | 22,055 |  | 26,772 | 13,473 | 22,055
Other receivables and assets |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets, at fair value | 19,843 | 27,164 |  | 13,769 | 19,843 | 27,164
Other receivables and assets | ASSETS AT FAIR VALUE THROUGH PROFIT AND LOSS |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets, at fair value | 0 | 0 |  | 0 | 0 | 0
Other receivables and assets | ASSETS AT AMORTIZED COST |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets, at fair value | 19,843 | 27,164 |  | 13,769 | 19,843 | 27,164
Other receivables and assets | Recurring fair value measurement |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets | 19,843 | 27,164 |  | 13,769 | 19,843 | 27,164
Cash and cash equivalents |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets, at fair value | 144,221 | 251,942 |  | 516,685 | 144,221 | 251,942
Cash and cash equivalents | ASSETS AT FAIR VALUE THROUGH PROFIT AND LOSS |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets, at fair value | 0 | 0 |  | 437,031 | 0 | 0
Cash and cash equivalents | ASSETS AT AMORTIZED COST |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets, at fair value | 144,221 | 251,942 |  | 79,654 | 144,221 | 251,942
Cash and cash equivalents | Recurring fair value measurement |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Financial assets | € 144,221 | € 251,942 |  | 516,685 | 144,221 | 251,942
Long-term advances made to CROs | Recurring fair value measurement | Credit spread | Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Decrease in financial assets at fair value |  |  |  | € 231 | € 235 | € 23
Long-term advances made to CROs | Recurring fair value measurement | Bottom of range | Credit spread | Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Significant unobservable input, assets | 0.0131 | 0.0104 |  | 0.0034 | 0.0131 | 0.0104
Long-term advances made to CROs | Recurring fair value measurement | Top of range | Credit spread | Discounted cash flow |  |  |  |  |  |
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items] |  |  |  |  |  |
Significant unobservable input, assets | 0.0271 | 0.0218 |  | 0.0131 | 0.0271 | 0.0218

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