Quarterly report pursuant to Section 13 or 15(d)

Share-based compensation - Options (Details)

v3.20.2
Share-based compensation - Options (Details) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Share-based compensation        
Number of options granted (in shares) 1,882,966 3,733,359 14,851,182 15,477,255
Weighted average fair value (in dollars per share) $ 1.25 $ 0.31 $ 0.57 $ 0.48
Number of additional options with a nominal exercise price granted 571,320 743,292 7,410,136 7,700,658
Weighted average fair value of RSU-style options granted $ 1.70 $ 0.51 $ 0.78 $ 0.89