v3.25.3
Share-based payments - Disclosure of fair value of the BSAs at grant date using the Black Scholes model (Details)
9 Months Ended
Apr. 22, 2025
shares
Jan. 13, 2025
shares
Sep. 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   100,000 100,000
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 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   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