Events after the balance sheet date (Details) - CHF (SFr) |
3 Months Ended | 6 Months Ended | |
|---|---|---|---|
Sep. 29, 2025 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Events after balance sheet date | |||
| Sale of treasury shares | 12,898,903 | 3,050,665 | |
| Share sale price | SFr 0.06 | SFr 0.077 | |
| Gross proceeds from sale of treasury shares | SFr 777,546 | SFr 235,257 | |
| Sale of treasury shares | |||
| Events after balance sheet date | |||
| Sale of treasury shares | 5,086,552 | ||
| Share sale price | SFr 0.069 | ||
| Gross proceeds from sale of treasury shares | SFr 350,427 | ||