Net loss per share

12 Months Ended

Dec. 31, 2015

Basic net loss per share is computed by dividing net loss by the weighted-average number of Common Stock actually outstanding during the period. Diluted net loss per share is computed by dividing net loss by the weighted-average number of Common Stock outstanding and dilutive potential Common Stock that would be issued upon the exercise of Common Stock warrants and options. For the year ended December 31, 2015 and 2014, the effect of issuing the potential common stock is anti-dilutive due to the net losses in those periods and the number of shares used to compute basic and diluted earnings per share are the same in each of those periods.

The following potentially dilutive securities outstanding have been excluded from the computations of diluted weighted-average shares outstanding because such securities have an antidilutive impact due to losses reported (in Common Stock equivalent shares):



	As of December 31,
	2015	2014
Convertible preferred stock	2,462,162	—
Warrants issued to 2010/2012 convertible note holders to purchase common stock	480,147	523,867
Options to purchase common stock	1,858,839	1,072,011
Warrants issued in 2009 to purchase common stock	9,259	9,259
Warrants issued to underwriter to purchase common stock	82,500	82,500
Series A warrants to purchase common stock	2,425,605	2,449,605
Series B warrants to purchase common stock	116,580	2,449,605
Series C warrants to purchase common stock	590,415	—
Series D warrants to purchase common stock	1,280,324	—