v3.26.1
Share-based compensation - Disclosure of Movements in the Number of Share Options (Details)
6 Months Ended
Jun. 30, 2026
shares
SFr / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Exercise price (in CHF per share) | SFr / shares SFr 0.10
PSUs and RSUs  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Balance outstanding at beginning of period (in shares) 3,423,001
Granted (in shares) 1,895,303
(Performance adjustment) (in shares) (395,261)
(Forfeited) (in shares) (123,951)
(Expired) (in shares) 0
(Exercised grants), vested (in shares) (993,696)
Balance outstanding at end of period (in shares) 3,805,396