Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2015

Outstanding Warrants to Purchase Shares of Common Stock

At March 31, 2015, outstanding warrants to purchase shares of common stock are as follows:

Shares Underlying Outstanding Warrants		Exercise Price		Expiration Date
	409,228	$	3.440	April 2015
	1,062,500	$	1.000	April 2015
	1,816,608	$	3.650	May 2015
	2,046,139	$	2.750	January 2016
	10,625,000	$	1.100	November 2016
	28,097,400	$	0.650	June 2018
	13,081,428	$	0.010	November 2019
	22,011,265	$	0.750	November 2019
	79,149,568

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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