v3.26.1
Discontinued operations - Financial performance of discontinued operations (Details) - CHF (SFr)
 12 Months Ended 24 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2025
Disclosure        
Other income SFr 142,888 SFr 5,940 SFr 4,235 [1]  
Research and development (671,651) (854,305) (1,186,692) [1]  
General and administration (2,315,807) (2,310,970) (2,673,463) [1]  
Total operating costs (2,987,458) (3,165,275) (3,860,155) [1]  
Operating loss (2,814,598) (2,755,233) (2,242,967) [1]  
Finance expense (15,547) (3,547) (321,150) [1]  
Net loss before tax (6,842,588) (4,909,342) (2,500,153) [1]  
Total net gain / (loss) from Discontinued operations 114,342 11,965,129 (8,056,074) [1]  
Discontinued operations        
Disclosure        
Total operating costs   (2,000,000) (8,100,000)  
Discontinued operations as disclosed below        
Disclosure        
Other income   38,401 29,881  
Research and development   (1,337,936) (5,716,857)  
General and administration   (673,259) (2,351,356)  
Total operating costs   (2,011,195) (8,068,213)  
Operating loss   (1,972,794) (8,038,332)  
Finance expense   (5,672) (17,742)  
Net loss before tax   (1,978,466) (8,056,074)  
Net loss from discontinued operations   (1,978,466) (8,056,074)  
Net gain / (loss) of the sale of activities after income tax 114,342 13,943,595   SFr 14,100,000
Total net gain / (loss) from Discontinued operations 114,342 SFr 11,965,129 SFr (8,056,074)  
Remaining contingent consideration receivable SFr 0     SFr 0
[1] The comparative information has been re-presented due to discontinued operations that have been reclassed to the financial line called “Net profit or loss from discontinued operations” (note 23). In the other sections of these consolidated financial statements an asterisk will indicate where comparative information has been re-presented