Operating expenses - Disclosure of general and administrative expenses (Details) - EUR (€) € in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
|
| Disclosure of attribution of expenses by nature to their function [line items] | ||||
| Operating expenses | € 82,755 | € 51,514 | € 178,538 | € 138,325 |
| General and administrative expense | ||||
| Disclosure of attribution of expenses by nature to their function [line items] | ||||
| Personnel costs | 21,042 | 4,051 | 31,588 | 15,483 |
| Consulting and professional fees | 3,542 | 2,229 | 7,245 | 6,077 |
| Other general and administrative expenses | 917 | 1,095 | 2,971 | 3,746 |
| Operating expenses | € 25,500 | € 7,375 | € 41,803 | € 25,306 |