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Operating expenses - Disclosure of expenses by nature (Details) - EUR (€) € in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Statement Line Items [Line Items] |  |
Subcontracting costs | € (15,585) | € (15,857)
Cost of supplies and consumable materials | (1,638) | (1,510)
Personnel expenses other than share-based compensation | (11,002) | (11,652)
Share-based compensation | (1,706) | (1,401)
Personnel expenses | (12,708) | (13,053)
Non-scientific advisory and consulting | (2,058) | (2,194)
Leasing and maintenance | (1,200) | (915)
Travel expenses and meeting attendance | (423) | (323)
Marketing, communication and public relations | (180) | (176)
Scientific advisory and consulting | (933) | (561)
Other purchases and external expenses | (1,135) | (1,166)
Depreciation and amortization | (1,146) | (3,645)
Intellectual property expenses | (696) | (638)
Other income and (expenses), net | (956) | (562)
Operating expenses | (38,657) | (40,597)
R&D |  |
Statement Line Items [Line Items] |  |
Subcontracting costs | (15,585) | (15,857)
Cost of supplies and consumable materials | (1,485) | (1,410)
Personnel expenses other than share-based compensation | (7,532) | (7,781)
Share-based compensation | (1,175) | (905)
Personnel expenses | (8,707) | (8,686)
Non-scientific advisory and consulting | (124) | (532)
Leasing and maintenance | (490) | (470)
Travel expenses and meeting attendance | (272) | (180)
Marketing, communication and public relations | (16) | (34)
Scientific advisory and consulting | (933) | (561)
Other purchases and external expenses | (10) | (13)
Depreciation and amortization | (643) | (3,044)
Intellectual property expenses | (568) | (570)
Other income and (expenses), net | (242) | (98)
Operating expenses | (29,076) | (31,453)
G&A |  |
Statement Line Items [Line Items] |  |
Subcontracting costs | 0 | 0
Cost of supplies and consumable materials | (153) | (100)
Personnel expenses other than share-based compensation | (3,470) | (3,871)
Share-based compensation | (531) | (496)
Personnel expenses | (4,001) | (4,367)
Non-scientific advisory and consulting | (1,934) | (1,662)
Leasing and maintenance | (710) | (445)
Travel expenses and meeting attendance | (151) | (143)
Marketing, communication and public relations | (164) | (142)
Scientific advisory and consulting | 0 | 0
Other purchases and external expenses | (1,125) | (1,153)
Depreciation and amortization | (503) | (601)
Intellectual property expenses | (128) | (68)
Other income and (expenses), net | (714) | (464)
Operating expenses | € (9,582) | € (9,144)

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