Shareholders' Equity (Tables)
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12 Months Ended |
Dec. 31, 2025 |
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| Shareholders' Equity |
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| Schedule of Share capital |
| | | | | | | | | Number of shares 2025 | | Number of shares 2024 | | Number of shares 2023 | | | Ordinary | | Ordinary | | Ordinary | Balance at January 1 | | 107,710,916 | | 84,248,384 | | 84,246,967 | Issued for cash | | — | | 23,463,610 | | — | Issued for services | | — | | — | | — | Exercise of share options / vesting of RSUs | | 148,537 | | 394,481 | | 537,513 | Treasury shares issued (transferred) | | (148,537) | | (395,559) | | (536,096) | Balance at December 31 | | 107,710,916 | | 107,710,916 | | 84,248,384 |
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| Schedule of fair value of options calculated using Black-Scholes option pricing model and weighted average assumptions utilized |
| | | | | | | | | | Options granted | | Options granted | | Options granted | | | | in 2025 | | in 2024 | | in 2023 | | Risk-free interest rate | | 4.099 | % | 3.903 | % | 3.960 | % | Expected dividend yield | | — | % | — | % | — | % | Expected volatility | | 101.5 | % | 96.5 | % | 105.6 | % | Expected life in years | | 5 | years | 5 | years | 5 | years |
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| Schedule of Movements in the number of options outstanding and weighted average exercise prices |
| | | | | | | | | | | | | | | | | | 2025 | | 2024 | | 2023 | | | Number of | | Average | | Number of | | Average | | Number of | | Average | | | options | | exercise price | | options | | exercise price | | options | | exercise price | Balance at January 1 | | 11,671,792 | | € | 3.38 | | 11,186,240 | | € | 3.10 | | 11,279,210 | | € | 3.66 | Granted | | 4,852,997 | | € | 1.77 | | 1,377,780 | | € | 1.94 | | 1,793,449 | | € | 2.76 | Forfeited | | (91,770) | | € | 1.62 | | (179,259) | | € | 1.61 | | (276,272) | | € | 4.62 | Exercised | | (99,317) | | € | 0.63 | | (300,036) | | € | 0.79 | | (337,746) | | € | 1.07 | Expired | | (267,397) | | € | 8.20 | | (412,933) | | € | 4.05 | | (1,272,401) | | € | 7.80 | Balance at December 31 | | 16,066,305 | | € | 2.56 | | 11,671,792 | | € | 3.38 | | 11,186,240 | | € | 3.10 | Exercisable at December 31 | | 9,631,699 | | € | 3.09 | | 8,152,467 | | € | 3.98 | | 6,679,018 | | € | 4.05 |
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| Schedule of movements in the number of RSUs outstanding |
| | | | | | | | | 2025 | | 2024 | | 2023 | | | Number of | | Number of | | Number of | | | RSUs | | RSUs | | RSUs | Balance at January 1 | | 53,569 | | 166,306 | | 370,962 | Granted | | — | | — | | 52,319 | Forfeited | | (64) | | (17,775) | | (66,881) | Released | | (49,523) | | (94,962) | | (190,094) | Balance at December 31 | | 3,982 | | 53,569 | | 166,306 |
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