v3.25.4
Share-based compensation, Outstanding Options, Range of Exercise prices and Expiration Dates (Details)
12 Months Ended
Dec. 31, 2025
Options
SFr / shares
Dec. 31, 2025
Options
$ / shares
SFr / shares
Dec. 31, 2024
SFr / shares
Dec. 31, 2024
$ / shares
Dec. 31, 2023
SFr / shares
Dec. 31, 2023
$ / shares
Dec. 31, 2025
Options
$ / shares
Outstanding options, exercise price range and expiry dates              
Number of share options outstanding in share-based payment arrangement 5,518,564 5,518,564         5,518,564
Weighted average exercise price for options granted (in CHF/USD per share) | (per share) SFr 2.09 $ 2.4 SFr 3.4 $ 3.99 SFr 1.75 $ 2.08  
Weighted average share price | (per share) 2.12 $ 2.57          
Minimum | Switzerland, Francs              
Outstanding options, exercise price range and expiry dates              
Weighted average exercise price of share options outstanding in share-based payment arrangement | SFr / shares 0.15 $ 0.15          
Minimum | United States of America, Dollars              
Outstanding options, exercise price range and expiry dates              
Weighted average exercise price of share options outstanding in share-based payment arrangement | $ / shares             $ 1.84
Maximum | Switzerland, Francs              
Outstanding options, exercise price range and expiry dates              
Weighted average exercise price of share options outstanding in share-based payment arrangement | SFr / shares SFr 9.53 $ 9.53          
Maximum | United States of America, Dollars              
Outstanding options, exercise price range and expiry dates              
Weighted average exercise price of share options outstanding in share-based payment arrangement | $ / shares             $ 12.3
CHF 0.15              
Outstanding options, exercise price range and expiry dates              
Number of share options outstanding in share-based payment arrangement 15,625 15,625         15,625
Weighted average remaining term (years) 4 months 24 days 4 months 24 days          
CHF 9.53              
Outstanding options, exercise price range and expiry dates              
Number of share options outstanding in share-based payment arrangement 109,665 109,665         109,665
Weighted average remaining term (years) 1 year 6 months 1 year 6 months          
USD 2.03 to USD 3.00              
Outstanding options, exercise price range and expiry dates              
Number of share options outstanding in share-based payment arrangement 2,031,586 2,031,586         2,031,586
Weighted average remaining term (years) 7 years 7 months 24 days 7 years 7 months 24 days          
USD 3.00 to USD 6.00              
Outstanding options, exercise price range and expiry dates              
Number of share options outstanding in share-based payment arrangement 1,885,863 1,885,863         1,885,863
Weighted average remaining term (years) 5 years 5 months 4 days 5 years 5 months 4 days          
USD 6.00 to USD 9.00              
Outstanding options, exercise price range and expiry dates              
Number of share options outstanding in share-based payment arrangement 1,356,455 1,356,455         1,356,455
Weighted average remaining term (years) 4 years 6 months 14 days 4 years 6 months 14 days          
USD 9.00 to USD 12.30              
Outstanding options, exercise price range and expiry dates              
Number of share options outstanding in share-based payment arrangement 119,370 119,370         119,370
Weighted average remaining term (years) 2 years 21 days 2 years 21 days