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Net Loss per Common Share (Tables)
6 Months Ended
Jun. 30, 2022
Net Loss per Common Share  
Schedule of Basic and Diluted Net Loss Per Share

The following potentially dilutive securities have not been included in the computation of diluted net loss per share for the three months ended June 30, 2021 and 2022, as the result would be anti-dilutive:

 

June 30, 

June 30, 

    

2022

    

2021

Stock options

 

1,613,089

 

731,761

Restricted Stock Units

 

118,665

 

6% convertible exchangeable preferred stock

 

85

 

85

Series A preferred stock

 

6,600

 

6,600

Series B preferred stock

 

1,188,725

 

1,188,725

Common stock warrants

 

3,234,379

 

3,234,379

Total shares excluded from calculation

 

6,161,543

 

5,161,550