Net Loss Per Share
 3 Months Ended
Mar. 31, 2021
Net Loss Per Share  
Net Loss Per Share

16.  Net Loss Per Share

The following outstanding potentially dilutive shares have been excluded from the calculation of diluted net loss per share due to their anti-dilutive effect:

 

 

 

 

 

 

 

 

Three Months Ended March 31,

 

    

2021

    

2020

Stock options to purchase common stock

 

3,560,541

 

2,399,195

Unvested restricted stock units

 

 —

 

525,177

Convertible promissory notes

 

 —

 

2,378,753

Total

 

3,560,541

 

5,303,125