Quarterly report pursuant to Section 13 or 15(d)

Summary of Stock Option Activity (Details)

v3.21.2
Summary of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Share-based Payment Arrangement [Abstract]    
Options outstanding at beginning 465,393 377
Weighted average exercisable price $ 5.53 $ 7,446.69
Weighted average remaining contractual terms (years), outstanding at beginning 9 years 3 months 18 days 5 years 3 months 18 days
Intrinsic value, outstanding at beginning of period
Options, granted 368,500 465,017
Weighted average exercise price, granted $ 1.93 $ 0.47
Weighted average remaining contractual terms (years), granted 10 years 10 years
Options, exercised
Weighted average exercise price, exercised
Options, forfeited
Weighted average exercise price, forfeited
Options, expired
Weighted average exercise price, expired
Options, outstanding at end 833,893 465,394
Weighted average exercise price, outstanding at end of period $ 3.98 $ 5.90
Weighted average remaining contractual terms (years), outstanding at ending 8 years 10 months 24 days 9 years 7 months 6 days
Intrinsic value, outstanding at end of period $ 417,164 $ 746,774
Options, exercisable at end 221,834  
Weighted average exercise price, exercisable at end of period $ 12.26  
Weighted average remaining contractual terms (years), exercisable 8 years 7 months 6 days  
Intrinsic value, exercisable at end of period  
Vested and expected to vest at end 833,893 377
Weighted average exercise price, vested and expected to vest at end $ 3.98 $ 7,446.69
Weighted average remaining contractual terms (years), vested and expected to vest 8 years 10 months 24 days 4 years 7 months 6 days
Intrinsic value, vested and expected to vest end of period $ 417,164