v3.25.2
Share-based payments - Disclosure of fair value of the BSAs at grant date using the Black Scholes model (Details)
 6 Months Ended
Jun. 30, 2025
shares
€ / shares
BSA-2025-1  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share) € 6.13
NUMBER OF BSAs (in shares) | shares 100,000
SUBSCRIPTION PRICE (in euro per share) € 2.00
STRIKE PRICE PER SHARE (in euro per share) € 6.63
RISK FREE RATE 4.65%
VOLATILITY 60.88%
BSA-2025-1 | Minimum  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
FAIR VALUE OF THE BSA ( in euro per share) € 3.5
EXPECTED MATURITY 5 years 6 months
BSA-2025-1 | Maximum  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
FAIR VALUE OF THE BSA ( in euro per share) € 3.9
EXPECTED MATURITY 7 years
BSA-2025-2  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share) € 6.13
NUMBER OF BSAs (in shares) | shares 25,000
SUBSCRIPTION PRICE (in euro per share) € 2.00
STRIKE PRICE PER SHARE (in euro per share) € 6.63
RISK FREE RATE 4.65%
VOLATILITY 60.88%
BSA-2025-2 | Minimum  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
FAIR VALUE OF THE BSA ( in euro per share) € 3.5
EXPECTED MATURITY 5 years 6 months
BSA-2025-2 | Maximum  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
FAIR VALUE OF THE BSA ( in euro per share) € 3.9
EXPECTED MATURITY 7 years
BSA-2025-3  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share) € 6.48
NUMBER OF BSAs (in shares) | shares 39,370
SUBSCRIPTION PRICE (in euro per share) € 1.27
STRIKE PRICE PER SHARE (in euro per share) € 6.41
RISK FREE RATE 3.92%
VOLATILITY 60.69%
BSA-2025-3 | Minimum  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
FAIR VALUE OF THE BSA ( in euro per share) € 3.7
EXPECTED MATURITY 5 years 6 months
BSA-2025-3 | Maximum  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
FAIR VALUE OF THE BSA ( in euro per share) € 4.1
EXPECTED MATURITY 7 years