Quarterly report pursuant to Section 13 or 15(d)

Common Stock - Summary of Stock Option Activity (Details)

v3.22.1
Common Stock - Summary of Stock Option Activity (Details) - Stock Options - 2019 Plan - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Number of Shares    
Number of Shares, Beginning Balance 4,257,213  
Number of Shares, Granted 1,885,600  
Number of Shares, Exercised (50,000)  
Number of shares, Forfeited/Cancelled (6,400)  
Number of Shares, Ending Balance 6,086,413 4,257,213
Number of Shares, Options Exercisable 2,114,852  
Weighted Average Exercise Price    
Weighted Average Exercise Price, Beginning Balance $ 8.49  
Weighted Average Exercise Price, Granted 3.20  
Weighted Average Exercise Price, Exercised 1.01  
Weighted Average Exercise Price, Forfeited/Cancelled 14.37  
Weighted Average Exercise Price, Ending Balance 6.91 $ 8.49
Weighted Average Exercise Price, Options Exercisable $ 6.87  
Weighted Average Remaining Contractual Term (years)    
Term (years) 8 years 6 months 8 years 2 months 12 days
Weighted Average Remaining Contractual Term (years), Options Exercisable 7 years 4 months 24 days  
Aggregate Intrinsic Value    
Aggregate Intrinsic Value, Beginning Balance $ 2,367  
Aggregate Intrinsic Value, Exercised 101  
Aggregate Intrinsic Value, Ending Balance 819 $ 2,367
Aggregate Intrinsic Value, Options Exercisable $ 727