Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Share-based payments (Details)

v3.21.2
Share-based payments (Details)
 9 Months Ended 12 Months Ended
Sep. 30, 2019
item
€ / shares
Sep. 30, 2021
item
€ / shares
Sep. 30, 2021
item
$ / shares
Sep. 30, 2020
item
€ / shares
Share-based payments        
Outstanding at beginning of period (in shares) 8,700 161,250 161,250 72,700
Granted during the period (in shares) 64,000 55,210 55,210 88,550
Forfeited/lapsed during the period (in shares)   (32,963) (32,963)  
Outstanding at end of period (in shares) 72,700 183,497 183,497 161,250
Exercisable at end of period (in shares)   17,167 17,167  
Outstanding at beginning of period (in dollars per share) | € / shares € 0.0001 € 0.0001   € 0.0001
Granted during the period (in dollars per share) | € / shares 0.0001 0.0001   0.0001
Forfeited/lapsed during the period (in dollars per share) | € / shares   0.0001    
Outstanding at end of period (in dollars per share) | (per share) € 0.0001 € 0.0001 $ 0.0001 € 0.0001