Annual report pursuant to Section 13 and 15(d)

Share-based compensation - Options granted and outstanding (Details)

v3.23.1
Share-based compensation - Options granted and outstanding (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Options    
Options outstanding (in shares) 2,684,041  
Granted (in shares) 618,500  
Forfeited/Expired (in shares) (231,354)  
Options outstanding (in shares) 3,071,187 2,684,041
Options exercisable (in shares) 2,141,961  
Weighted Average Exercise Price    
Options outstanding (in dollars per share) $ 6.10  
Granted (in dollars per share) 2.24  
Forfeited/Expired (in dollars per share) 5.26  
Options outstanding (in dollars per share) 5.39 $ 6.10
Options exercisable, weighted average exercise price (in dollars per share) $ 5.84  
Weighted Average Remaining Contractual Life    
Options outstanding, weighted average remaining contractual term 7 years 2 months 12 days 8 years 6 months
Options exercisable, weighted average remaining contractual term 6 years 6 months  
Aggregate Intrinsic Value    
Options outstanding, aggregate intrinsic value $ 0 $ 0
Options exercisable, aggregate intrinsic value $ 0