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Net Loss per Share (Tables)
3 Months Ended
Mar. 31, 2019
Earnings Per Share [Abstract]  
Schedule of Basic and Diluted Net Loss per Share Attributable to Common Stockholders

The numerator for basic and diluted net loss per share attributable to common stockholders is as follows:

 

 

 

Three Months Ended March 31,

 

 

 

2019

 

 

2018

 

Net loss attributable to common stockholders

 

$

(29,582

)

 

$

(15,877

)

 

The denominator is as follows:

 

 

 

Three Months Ended March 31,

 

 

 

2019

 

 

2018

 

Weighted average shares of common stock outstanding,

   basic and diluted

 

$

34,776,488

 

 

$

29,354,650

 

 

Net loss per share attributable to common stockholders, basic and diluted is as follows:

 

 

 

Three Months Ended March 31,

 

 

 

2019

 

 

2018

 

Net loss per share attributable to common stockholders

 

$

(0.85

)

 

$

(0.54

)

Schedule of Antidilutive Securities Excluded from Calculation of Diluted Net Loss per Share Attributable to Common Stockholders

The following potential common stock equivalents, presented based on amounts outstanding at each period end, were excluded from the calculation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:

 

 

 

Three Months Ended March 31,

 

 

 

2019

 

 

2018

 

Options to purchase shares of common stock

 

 

2,681,071

 

 

 

558,105

 

Unvested shares of common stock

 

 

599,426

 

 

 

1,065,485

 

 

 

 

3,280,497

 

 

 

1,623,590