Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2016

Schedule of warrants outstanding and exercisable for purchase of common stock


Expiration Date	Shares	Weighted Average Exercise Price Per Share
November 9, 2017	7,252,081	$	0.70
May 7, 2018	22,306,327		0.47
May 7, 2020	15,816,327		0.01
September 30, 2020	4,175,975		0.01
February 10, 2021	2,158,750		0.01
Total	51,709,460	$	0.31

Schedule of information related to outstanding and exercisable options


				Weighted-Average
				Remaining	Aggregate
	Stock	Weighted-Average		Contractual Life	Intrinsic
	Options	Exercise Price		(in years)	Value
Outstanding at December 31, 2015	16,261	$	3.45
Granted	3,346		2.64
Exercised	—		—
Forfeited	(878)		3.15
Expired	(727)		3.85
Outstanding at December 31, 2016	18,002		3.30	7.14	$	1,648
Exercisable at December 31, 2016	10,522		3.41	6.18		1,536
Total exercisable or expected to vest	17,283		3.31	7.08		1,637

- 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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