Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Selected Quarterly Financial Data (Unaudited)

Quarterly financial information

The following table contains quarterly financial information for 2019 and 2018. The information has been derived from unaudited consolidated financial statements that, in the opinion of management, include all recurring adjustments necessary for a fair statement of such information (in thousands, except per share data):

		Three Months Ended
		March 31,		June 30,		September 30,		December 31,
		2019		2019		2019		2019
Consolidated Statements of Operations Data:
Revenue	$	—	$	—	$	—	$	—
Total operating expenses		34,406		41,285		48,482		45,428
Loss from operations		(34,406)		(41,285)		(48,482)		(45,428)
Net loss attributable to common stockholders		(32,581)		(39,390)		(47,015)		(44,472)
Net loss per share attributable to common stockholders, basic and diluted	$	(0.42)	$	(0.50)	$	(0.59)	$	(0.56)
		Three Months Ended
		March 31,		June 30,		September 30,		December 31,
		2018		2018		2018		2018
Consolidated Statements of Operations Data:
Revenue	$	—	$	—	$	—	$	—
Total operating expenses		14,603		20,384		27,554		29,122
Loss from operations		(14,603)		(20,384)		(27,554)		(29,122)
Net loss attributable to common stockholders		(14,411)		(21,239)		(26,362)		(27,183)
Net loss per share attributable to common stockholders, basic and diluted	$	(1.72)	$	(2.43)	$	(0.42)	$	(0.35)