Stock-Based Compensation (Tables)

1 Months Ended

Jan. 31, 2015

Summary of stock based compensation expense

The following table summarizes the stock-based compensation expenses included in our Statement of Operations and Comprehensive Loss the months ended January 31, 2015 and 2014 and the years ended December 31, 2014 and 2013 (in thousands):

	Month ended January 31,				Year ended December 31,
	2015		2014		2014		2013
			(Unaudited)
Research and development	$	27	$	8	$	228	$	30
Sales and marketing		40		1		147		7
General and administrative expenses		32		2		818		21

Stock-based compensation expense, net of tax	$	99	$	11	$	1,193	$	58

Black scholes option pricing model fair value assumptions

				Year ended December 31,
	Month ended January 31, 2015			Year ended December 31,
	Month ended January 31, 2015			2014			2013
Expected volatility		82.1	%		82.2	%	82.1%
Expected term in years		6.0			6.0		5.51 - 6.08
Risk-free interest rate		1.56	%		1.74	%	0.61 - 1.62%
Expected dividend yield		—	%		—	%	—%