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Quarterly Financial Data (unaudited)
 12 Months Ended
Dec. 31, 2019
Quarterly Financial Data [Abstract]  
Quarterly Financial Data (unaudited)

13. Quarterly Financial Data (unaudited)

The following table summarizes the unaudited quarterly financial data for the last two fiscal years (in thousands, except per share data):

 

(in thousands, except share and per share amounts)

 

First

 

 

Second

 

 

Third

 

 

Fourth

 

 

 

Quarter

 

 

Quarter

 

 

Quarter

 

 

Quarter

 

2019

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Revenues

 

$

—

 

 

$

—

 

 

$

—

 

 

$

—

 

Total operating expenses

 

$

39,741

 

 

$

41,564

 

 

$

145,118

 

 

$

61,411

 

Net loss

 

$

(37,470

)

 

$

(38,174

)

 

$

(141,802

)

 

$

(58,767

)

Net loss per common share, basic and diluted

 

$

(0.93

)

 

$

(0.83

)

 

$

(3.07

)

 

$

(1.27

)

Weighted average number of shares, basic and diluted

 

 

40,506,313

 

 

 

46,065,901

 

 

 

46,133,068

 

 

 

46,278,409

 

2018

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Revenues

 

$

5,331

 

 

$

6,639

 

 

$

9,188

 

 

$

12,400

 

Total operating expenses

 

$

23,931

 

 

$

26,130

 

 

$

26,867

 

 

$

30,281

 

Net loss

 

$

(17,820

)

 

$

(18,413

)

 

$

(15,789

)

 

$

(15,676

)

Net loss per common share, basic and diluted

 

$

(0.50

)

 

$

(0.49

)

 

$

(0.39

)

 

$

(0.39

)

Weighted average number of shares, basic and diluted

 

 

35,827,235

 

 

 

37,440,024

 

 

 

40,116,644

 

 

 

40,259,575