Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2015

Schedule of Computation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders

The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders:


	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Numerator:
Net loss	$	(14,897	)	$	(6,941	)	$	(16,699	)	$	(10,454	)
Accretion of redeemable preferred stock		—			(13	)		—			(26	)

Net loss attributable to common stockholders	$	(14,897	)	$	(6,954	)	$	(16,699	)	$	(10,480	)

Denominator:
Weighted average common shares outstanding—basic and diluted		5,608,429			3,145,521			4,401,087			3,145,283
Net loss per share attributable to common stockholders—basic and diluted	$	(2.66	)	$	(2.21	)	$	(3.79	)	$	(3.33	)

Schedule of Computation of Diluted Weighted-Average Shares Outstanding Anti-Dilutive

The following potentially dilutive securities outstanding prior to the use of the treasury stock method have been excluded from the computation of diluted weighted-average shares outstanding, as they would be anti-dilutive.


	As of June 30,
	2015		2014
Convertible preferred stock (as converted to common stock)		—		5,269,907
Options to purchase common stock		1,983,470		832,184
Warrants to purchase common stock		4,473,440		—
Convertible notes and accrued interest (as converted to common stock)		—		327,505
Settlement of term loan		85,251		—