v3.25.4
Share-based compensation, Share Option Awards Outstanding (Details)
12 Months Ended
Dec. 31, 2025
shares
$ / shares
Dec. 31, 2024
shares
$ / shares
Dec. 31, 2023
shares
$ / shares
Dec. 31, 2021
Average exercise price per share [Abstract]        
Outstanding at beginning of period (in dollars per share) | $ / shares $ 3.95 $ 10.35 $ 15.32  
Granted (in dollars per share) | $ / shares 4.12 1.37 5.41  
Forfeited/Expired (in dollars per share) | $ / shares 11.69 10.85 12.02  
Exercised (in dollars per share) | $ / shares 0.03 [1]   2.05  
Outstanding at end of period (in dollars per share) | $ / shares $ 3.87 [2] $ 3.95 $ 10.35  
Number of awards [Abstract]        
Outstanding at beginning of period (in shares) | shares 1,869,547 790,720 461,596  
Granted (in shares) | shares 770,251 1,320,120 440,719  
Forfeited/Expired (in shares) | shares (43,634) (241,293) (104,299)  
Exercised (in shares) | shares (1,250) [1]   (7,296)  
Outstanding at end of period (in shares) | shares 2,594,914 [2] 1,869,547 790,720  
Weighted average remaining life [Abstract]        
Outstanding weighted average remaining life in years 5 years 10 months 28 days [2] 6 years 6 months 21 days 6 years 6 months 25 days 7 years 1 month 20 days
Granted weighted average remaining life in years 6 years 8 months 26 days 6 years 11 months 23 days 7 years 18 days  
Forfeited/Expired weighted average remaining life in years 5 years 7 months 24 days 6 years 18 days 6 years 9 months 7 days  
Exercised weighted average remaining life in years 4 years 9 months 29 days [1]   5 years 8 months 26 days  
Number of option exercisable (in shares) | shares 701,582 213,243 112,244  
Weighted average grant date fair value (in dollars per share) | $ / shares $ 10.43 $ 8.7 $ 7.72  
[1] The weighted average share price of share options exercised was $10.73
[2] 701,582 of the awards outstanding as of December 31, 2025 were exercisable (2024: 213,243, 2023: 112,244).