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Condensed Consolidated Statements of Changes in Equity - CHF (SFr) SFr in Thousands | Share capital | Share premium | Treasury shares | Accumulated losses | Currency Translation Differences | Total
--- | --- | --- | --- | --- | --- | ---
Balance, beginning of period at Dec. 31, 2019 | SFr 1,437 | SFr 346,526 | SFr 0 | SFr (75,521) | SFr 0 | SFr 272,442
Net income/(loss) for the period | 0 | 0 | 0 | (61,921) | 0 | (61,921)
Other comprehensive income/(loss) | 0 | 0 | 0 | 726 | 0 | 726
Total comprehensive loss, net of tax | 0 | 0 | 0 | (61,195) | 0 | (61,195)
Share-based payments | 0 | 0 | 0 | 4,088 | 0 | 4,088
Common shares |  |  |  |  |  |
Held as treasury shares | 100 | 0 | (100) | 0 | 0 | 0
Restricted share awards | 0 | 222 | 0 | (222) | 0 | 0
Exercise of options | 1 | 142 | 0 | 0 | 0 | 143
Balance, end of period at Dec. 31, 2020 | 1,538 | 346,890 | (100) | (132,850) | 0 | 215,478
Net income/(loss) for the period | 0 | 0 | 0 | (72,996) | 0 | (72,996)
Other comprehensive income/(loss) | 0 | 0 | 0 | 956 | 0 | 956
Total comprehensive loss, net of tax | 0 | 0 | 0 | (72,040) | 0 | (72,040)
Share-based payments | 0 | 0 | 0 | 4,126 | 0 | 4,126
Proceeds from sale of treasury shares in public offerings, net of underwriting fees and transaction costs |  | 12,097 | 24 |  |  | 12,121
Common shares |  |  |  |  |  |
IPR&D asset purchase | 130 | 49,741 |  |  |  | 49,871
Asset acquisition - common shares | 12 | 4,587 |  |  |  | 4,599
Conversion note agreement | 61 | 16,683 |  |  |  | 16,744
Held as treasury shares | 48 | 0 | (48) | 0 | 0 | 0
Restricted share awards | 1 | 171 | 0 | (178) | 0 | (6)
Exercise of options | 4 | 1,082 | 0 | 0 | 0 | 1,086
Balance, end of period at Dec. 31, 2021 | 1,794 | 431,251 | (124) | (200,942) | 0 | 231,979
Net income/(loss) for the period | 0 | 0 | 0 | (70,753) | 0 | (70,753)
Other comprehensive income/(loss) | 0 | 0 | 0 | 4,426 | 10 | 4,436
Total comprehensive loss, net of tax | 0 | 0 | 0 | (66,327) | 10 | (66,317)
Share-based payments | 0 | 0 | 0 | 3,330 | 0 | 3,330
Proceeds from sale of treasury shares in public offerings, net of underwriting fees and transaction costs |  | (8) | 0 |  |  | (8)
Common shares |  |  |  |  |  |
Restricted share awards | 0 | 76 | 0 | (76) | 0 | 0
Exercise of options | 3 | 4 | 0 | 0 | 0 | 7
Balance, end of period at Dec. 31, 2022 | SFr 1,797 | SFr 431,323 | SFr (124) | SFr (264,015) | SFr 10 | SFr 168,991

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