Operating expenses - Disclosure of research and development expenses (Details) - EUR (€) € in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Disclosure of attribution of expenses by nature to their function [line items] | ||||
| Operating expenses | € 85,312 | € 47,589 | € 142,886 | € 95,783 |
| RESEARCH AND DEVELOPMENT EXPENSES | ||||
| Disclosure of attribution of expenses by nature to their function [line items] | ||||
| Sub-contracting, studies and research | 31,481 | 30,139 | 51,276 | 59,292 |
| Personnel costs | 19,679 | 5,940 | 44,074 | 11,309 |
| Consulting and professional fees | 5,578 | 1,867 | 9,604 | 5,848 |
| Intellectual property fees | 443 | 238 | 874 | 476 |
| Other research and development expenses | 1,154 | 461 | 2,049 | 1,021 |
| Operating expenses | € 58,335 | € 38,645 | € 107,878 | € 77,946 |