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v3.26.1

Share-based payments - Disclosure of assumptions used for the measurement of BSAs (Details) |  |  |  | 1 Months Ended | 12 Months Ended
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Apr. 22, 2025 shares € / shares | Jan. 13, 2025 shares € / shares | Apr. 04, 2024 shares € / shares | Apr. 30, 2025 shares | Mar. 31, 2024 shares | Dec. 31, 2025 shares
BSA-2024-1 |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share) |  |  | € 14.06 |  |  |
NUMBE OF BSAs ( in shares) | shares |  |  | 58,365 |  | 77,820 | 0
BSA SUBSCRIPTION PRICE (in euro per share) |  |  | € 2.57 |  |  |
STRIKE PRICE PER SHARE ( in euro per share) |  |  | € 13.10 |  |  |
RISK FREE RATE |  |  | 4.30% |  |  |
VOLATILITY |  |  | 60.41% |  |  |
BSA-2024-1 | Minimum |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
FAIR VALUE OF THE BSA (in euro per share) |  |  | € 5.7 |  |  |
EXPECTED MATURITY |  |  | 5 years 4 months 24 days |  |  |
BSA-2024-1 | Maximum |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
FAIR VALUE OF THE BSA (in euro per share) |  |  | € 6.5 |  |  |
EXPECTED MATURITY |  |  | 6 years 10 months 24 days |  |  |
BSA-2024-2 |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
FAIR VALUE OF THE UNDERLYING SHARE (in euro per share) |  |  | € 14.06 |  |  |
NUMBE OF BSAs ( in shares) | shares |  |  | 19,455 |  |  | 0
BSA SUBSCRIPTION PRICE (in euro per share) |  |  | € 2.57 |  |  |
STRIKE PRICE PER SHARE ( in euro per share) |  |  | € 13.10 |  |  |
RISK FREE RATE |  |  | 4.30% |  |  |
VOLATILITY |  |  | 60.41% |  |  |
BSA-2024-2 | Minimum |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
FAIR VALUE OF THE BSA (in euro per share) |  |  | € 5.8 |  |  |
EXPECTED MATURITY |  |  | 5 years 6 months |  |  |
BSA-2024-2 | Maximum |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
FAIR VALUE OF THE BSA (in euro per share) |  |  | € 6.6 |  |  |
EXPECTED MATURITY |  |  | 7 years |  |  |
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 |  |  |  |
NUMBE OF BSAs ( in shares) | shares |  | 100,000 |  |  |  | 100,000
BSA 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 |  |  |  |
NUMBE OF BSAs ( in shares) | shares |  | 25,000 |  |  |  | 25,000
BSA 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 |  |  |  |  |
NUMBE OF BSAs ( in shares) | shares | 39,370 |  |  | 39,370 |  | 39,370
BSA 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 |  |  |  |  |

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