Annual report pursuant to Section 13 and 15(d)

Warrants

v2.4.0.6
Warrants
12 Months Ended
Dec. 31, 2012
Warrants and Rights Note Disclosure [Abstract]  
Warrants
Warrants
Our outstanding warrants are exercisable for common stock at any time during their respective terms. During the year ended December 31, 2012, 6,066 warrants were exercised in a net share transaction to acquire 3,308 shares of our common stock. No warrants were exercised during 2011.
At December 31, 2012, the following warrants were issued and outstanding: 
Issue Date
Shares Subject
to warrants
 
Exercise Price
per Share
 
Expiration
May 25, 2006
184,895

 
$
5.96

 
May 25, 2013
July 17, 2007
2,384

 
12.45

 
February 9, 2016
September 28, 2007
72,727

 
8.25

 
September 28, 2017