Number of Warrants | Per share exercise price | Weighted Average Exercise Price | ||||||||||
Outstanding, January 1, 2011 | 649,000 | $ | 0.68 - 10.00 | $ | 6.42 | |||||||
Granted in 2011 | 206,613 | 10.00 | 10.00 | |||||||||
Exercised in 2011 | (219,000 | ) | 0.68 - 3.00 | 1.94 | ||||||||
Outstanding, December 31, 2011 | 636,613 | $ | 3.00 – 10.00 | $ | 9.13 | |||||||
Expired in 2012 | (80,000 | ) | 3.00 | 3.00 | ||||||||
Outstanding, December 31, 2012 | 556,613 | $ | 10.00 | $ | 10.00 | |||||||
Granted in 2013 | 9,195,002 | 5.00 | 5.00 | |||||||||
Outstanding, December 31, 2013 | 9,751,615 | $ | 5.00 – 10.00 | $ | 5.29 | |||||||