Net Loss per Share (Tables)
9 Months Ended
Sep. 30, 2021
Net Loss per Share  
Schedule of calculation of basic and diluted net loss per share attributable to common stockholders

Basic and diluted net loss per share was calculated as follows (in thousands, except share and per share amounts):

Three Months Ended September 30, 

Nine Months Ended September 30, 

    

2021

    

2020

    

2021

    

2020

    

Numerator:

 

  

 

  

 

  

 

  

 

Net loss

$

(49,016)

$

(40,852)

$

(141,526)

$

(127,192)

 

  

 

 

  

 

  

Denominator:

 

  

 

  

 

  

 

  

Weighted average common shares outstanding, basic and diluted

 

89,807,383

 

80,778,042

 

87,240,694

 

80,511,543

Net loss per share, basic and diluted

$

(0.55)

$

(0.51)

$

(1.62)

$

(1.58)

Schedule of dilutive securities excluded from computations of diluted weighted average shares outstanding

September 30, 

    

2021

    

2020

    

Unvested restricted common stock

 

985,364

 

252,000

 

Stock options to purchase common stock

 

17,782,603

 

16,541,112

 

 

18,767,967

 

16,793,112