Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Stock Option Activity (Details)

v3.21.1
Stockholders' Equity - Stock Option Activity (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Shares    
Stock options outstanding at beginning of period 437,603 66,422
Granted 1,167,749 417,120
Exercised (7,140) (285)
Forfeited/Expired (118,073) (45,654)
Stock options outstanding at end of period 1,480,139 437,603
Stock options exercisable at end of period 871,721  
Weighted Average Exercise Price    
Stock options outstanding at beginning of period (in dollars per share) $ 17.90 $ 81.15
Granted (in dollars per share) 7.90 7.21
Exercised (in dollars per share) 3.99 7.42
Forfeited/Expired (in dollars per share) 5.80 12.33
Stock options outstanding at end of period (in dollars per share) 11.05 $ 17.90
Stock options exercisable at end of period $ 14.74  
Aggregate Intrinsic Value    
Stock options outstanding at beginning of period $ 44,196  
Exercised 9,813  
Stock options outstanding at end of period 403,744 $ 44,196
Stock options exercisable at end of period $ 120,993  
Weighted Average Remaining Contractual Life    
Stock options outstanding at end of period 8 years 7 months 6 days  
Stock options exercisable at end of period 8 years 1 month 6 days  
Unrecognized stock-based compensation expense $ 2,400,000  
Unrecognized stock-based compensation expense, recognition period 1 year 9 months  
Weighted-average fair value of options $ 5.92 $ 5.27