Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Net Loss Per Share

Schedule of basic and diluted net loss per share

Basic and diluted net loss per share for the three months ended March 31, 2018 and 2017 was calculated as follows (in thousands except share and per share amounts):

	Three Months Ended			Three Months Ended
	March 31,			March 31,
	2018			2017
Numerator:
Net loss	$	(10,622	)	$	(9,414	)
Accretion of preferred stock to redemption value	—			(244		)
Net loss attributable to common stockholders	$	(10,622	)	$	(9,658	)
Denominator:
Weighted average number of common shares outstanding - basic and diluted	12,449,421			6,945,623
Net loss per share attributable to common stockholders - basic and diluted	$	(0.85	)	$	(1.39	)

Schedule of potentially anti-dilutive securities excluded from calculation of diluted net loss per share

	Three Months Ended	Three Months Ended
	March 31,	March 31,
	2018	2017
Options to purchase common stock	2,250,080	1,867,458
Warrants assumed from Macrocure	54,516	54,516
Warrants issued with the Private Placement	2,958,094	—
	5,262,690	1,921,974