Net (Loss) Income per Share Attributable to Common Stockholders

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Net Income (Loss) per Share Attributable to Common Stockholders

13. Net (Loss) Income per Share Attributable to Common Stockholders

The following outstanding shares of common stock equivalents were excluded from the computation of diluted net (loss) income per share attributable to common stockholders for the periods presented because including them would have been antidilutive:

	Year Ended December 31,
	2014		2013		2012
Convertible preferred stock	–		–			24,026,797
Stock options to purchase common stock		4,249,168		3,708,773		1,653,298
Convertible preferred stock warrants	–		–			81,075
Common stock warrants		6,240		82,575		1,500

The following table sets forth the computation of our basic and diluted net (loss) income per share attributable to common stockholders (in thousands, except share and per share data):

	Year Ended December 31,
	2104			2013			2012
Net (loss) income	$	(137,125	)	$	(83,352	)	$	11,366
Noncumulative dividends on convertible preferred stock	–			–				(11,366	)
Net loss attributable to common stockholders, basic		(137,125	)		(83,352	)		–
Adjustment to undistributed earnings allocated to participating securities	–			–			–
Net loss attributable to common stockholders, diluted	$	(137,125	)	$	(83,352	)	$	–
Shares used in computing net loss per share attributable to common stockholders, basic		42,977,463			22,842,443			1,350,939
Dilutive effect of common stock options	–			–				697,928
Shares used in computing net loss per share attributable to common stockholders, diluted		42,977,463			22,842,443			2,048,867
Net loss per share attributable to common stockholders:
Basic	$	(3.19	)	$	(3.65	)	$	–
Diluted	$	(3.19	)	$	(3.65	)	$	–