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Fair value measurement (Tables) | 6 Months Ended
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Jun. 30, 2025
Fair value measurement |
Schedule of assets and liabilities measured at fair value on recurring basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Quoted prices in active markets (Level 1) |  | Significant other observable inputs (Level 2) |  | Significant unobservable inputs (Level 3) |  | Total |  | Classification in Consolidated balance sheets
​ | ​ | ​ | (in thousands) | ​ | ​
At December 31, 2024 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash and cash equivalents | ​ | $ | 158,930 | ​ | $ | — | ​ | $ | — | ​ | $ | 158,930 | ​ | Cash and cash equivalents
Restricted cash | ​ | ​ | 1,399 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,399 | ​ | Other non-current assets
Total assets | ​ | $ | 160,329 | ​ | $ | — | ​ | $ | — | ​ | $ | 160,329 | ​ | ​
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Contingent consideration | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 10,860 | ​ | ​ | 10,860 | ​ | Contingent consideration
Consideration for post-acquisition services | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 370 | ​ | ​ | 370 | ​ | Other non-current liabilities
Total liabilities | ​ | $ | — | ​ | $ | — | ​ | $ | 11,230 | ​ | $ | 11,230 | ​ | ​
At June 30, 2025 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Cash and cash equivalents | ​ | $ | 253,778 | ​ | $ | — | ​ | $ | — | ​ | $ | 253,778 | ​ | Cash and cash equivalents
Restricted cash | ​ | ​ | 1,494 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,494 | ​ | Other non-current assets
Total assets | ​ | $ | 255,272 | ​ | $ | — | ​ | $ | — | ​ | $ | 255,272 | ​ | ​
Liabilities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Contingent consideration | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 15,931 | ​ | ​ | 15,931 | ​ | Contingent consideration
Consideration for post-acquisition services | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 542 | ​ | ​ | 542 | ​ | Other non-current liabilities
Total liabilities | ​ | $ | — | ​ | $ | — | ​ | $ | 16,473 | ​ | $ | 16,473 | ​ | ​
Schedule of changes in fair value of contingent consideration | ​
​ | ​ | ​ | ​
​ | ​ | Amount of
​ | ​ | contingent
​ | ​ | consideration
​ |  | 2025
​ | ​ | (in thousands)
Balance at December 31, 2024 | ​ | $ | 10,860
Unrealized change in fair value (presented within research and development expenses) | ​ | ​ | 3,470
Currency translation effects | ​ | ​ | 1,601
Balance at June 30, 2025 | ​ | $ | 15,931

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- Definition Tabular disclosure of changes in fair value of contingent consideration. + References No definition available. + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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