v3.25.4
Expenses by category (Details)
SFr in Thousands
 12 Months Ended
Dec. 31, 2025
CHF (SFr)
employee
Dec. 31, 2024
CHF (SFr)
employee
Dec. 31, 2023
CHF (SFr)
employee
Disclosure of detailed information about borrowings [line items]      
Share-based compensation SFr 4,400 SFr 5,500 SFr 4,400
Financial result, net [Abstract]      
Financial income 1,865 3,196 1,044
Financial expense (191) (133) (176)
Exchange differences (2,803) (1,598) (1,467)
Finance result, net (1,129) 1,465 (599)
Unfavorable change in net finance result (2,500)    
Decrease in financial income (1,300)    
Research and development expenses      
Disclosure of detailed information about borrowings [line items]      
Operating expenses 33,890 39,177 32,076
Depreciation expense 886 986 1,122
Payroll expenses 20,213 20,195 19,499
Share-based compensation 1,447 2,212 1,909
Total expenses by category SFr 56,436 SFr 62,570 SFr 54,606
Average number of employees | employee 105 122.5 115.4
General and administrative expenses      
Disclosure of detailed information about borrowings [line items]      
Operating expenses SFr 2,825 SFr 4,672 SFr 3,658
Depreciation expense 1,617 1,153 1,071
Payroll expenses 8,529 8,222 7,755
Share-based compensation 3,123 3,212 2,821
Total expenses by category SFr 16,094 SFr 17,259 SFr 15,305
Average number of employees | employee 26.7 30.9 26.2