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Net Loss per Share (Tables)
12 Months Ended
Dec. 31, 2019
Net Loss per Share  
Basic and diluted net loss per common share

Year ended December 31, 

(in thousands, except per share data)

2019

2018

2017

    

    

    

 

Numerator:

Net loss used to compute net loss per share, basic

$

(124,827)

$

(128,154)

$

(137,628)

Less: Remeasurement gain on warrant liability

(1,148)

Net loss used to compute net loss per share, diluted

$

(124,827)

$

(128,154)

$

(138,776)

Denominator:

Weighted-average common shares outstanding

69,555

57,848

53,312

Less: Weighted-average unvested common shares subject to repurchase

Weighted-average number of shares used in computing net loss per share, basic

 

69,555

 

57,848

 

53,312

 

Add: Incremental shares from assumed exercise of warrants

292

Weighted-average number of shares used in computing net loss per share, diluted

 

69,555

 

57,848

 

53,604

Net loss per share, basic

$

(1.79)

$

(2.22)

$

(2.58)

Net loss per share, diluted

 

$

(1.79)

 

$

(2.22)

 

$

(2.59)

 

Total outstanding potentially dilutive shares not included in the calculation of dilutive EPS

As of December 31,

     

2019

    

2018

    

2017

 

 

Options to purchase common stock

8,497

 

9,463

 

9,963

Restricted stock units

2,404

1,084

389

Employee stock purchase plan

32

42

79

10,933

 

10,589

10,431