Annual report pursuant to Section 13 and 15(d)

Stock Options - Option Activity (Details)

v3.23.1
Stock Options - Option Activity (Details) - Share-based Payment Arrangement, Option - $ / shares
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Number of Shares      
Beginning balance (in shares) 1,019,732 911,618  
Granted (in shares) 441,981 124,614  
Exercised (in shares) 0 0  
Forfeited/Cancelled (in shares) (110,292) (16,500)  
Expired (in shares) 0 0  
Ending balance (in shares) 1,351,421 1,019,732 911,618
Unvested (in shares) 369,620    
Vested and exercisable (in shares) 981,801    
Weighted- Average Grant Date Fair Value per Share      
Outstanding, term 6 years 5 months 26 days 7 years 11 months 15 days 9 years 10 months 2 days
Granted, term 4 years 5 months 26 days 4 years 4 months 17 days  
Forfeited/Cancelled, term 2 years 9 months 25 days 3 years 8 months 23 days  
Unvested, term 6 years 18 days    
Vested and exercisable, term 6 years 7 months 28 days    
Weighted- Average Exercise Price      
Beginning balance (in dollars per share) $ 17.50 $ 16.90  
Granted (in dollars per share) 10.59 23.60  
Exercised (in dollars per share) 0 0  
Forfeited/Cancelled (in dollars per share) 16.48 27.90  
Expired (in dollars per share) 0 0  
Ending balance (in dollars per share) 15.09 $ 17.50 $ 16.90
Unvested options (in dollars per share) 13.07    
Vested and exercisable (in dollars per share) $ 15.85