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v3.26.1

Share-based compensation (Tables) | 6 Months Ended
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Jun. 30, 2026
Share-based compensation |
Summary of share options | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ ​ ​ | ​ ​ ​ | ​ ​ ​ | Weighted- | ​ | Weighted-
​ | ​ | ​ | ​ | average | ​ | average
​ | ​ | Number of | ​ | exercise price | ​ | remaining
​ | ​ | options | ​ | (CHF) | ​ ​ | term (years)
Outstanding at January 1, 2026 |  | 5,518,564 | ​ | 4.25 | ​ | 5.9
Forfeited during the period |  | (2,846) | ​ | 2.60 | ​ | —
Expired during the period | ​ | (188,967) | ​ | 5.28 | ​ | —
Exercised during the period | ​ | (21,508) | ​ | 0.76 | ​ | —
Granted during the period |  | 609,347 | ​ | 2.30 | ​ | —
Outstanding at June 30, 2026 |  | 5,914,590 |  | 3.54 | ​ | 6.2
Exercisable at June 30, 2026 |  | 5,059,248 |  | 3.75 | ​ | 5.7
Summary of restricted share awards | ​
​ | ​ | ​ | ​ | ​
​ | ​ ​ ​ | ​ ​ ​ | ​ ​ ​ | Weighted-
​ | ​ | ​ | ​ | average
​ | ​ | Number of | ​ | grant date fair
​ | ​ | shares | ​ | value (CHF)
Non-vested at December 31, 2025 |  | 763,816 | ​ | 2.62
Forfeited during the period | ​ | (53,409) | ​ | 2.63
Exercised during the period | ​ | (164,902) | ​ | 2.57
Granted during the period |  | 1,243,267 | ​ | 2.42
Vested during the period |  | (483,081) | ​ | 2.33
Non-vested at June 30, 2026 |  | 1,473,029 | ​ | 2.55
Vested and exercisable at June 30, 2026 |  | 2,891,435 |  | 2.83

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- Definition The disclosure of the number and weighted average exercise prices of share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 45 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45_b&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 31 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 31 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_31_b&doctype=Standard -URIDate 2025-03-27 + Details
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