Warrants | Exercise Price per Share | Weighted Average Exercise Price | Weighted Average Remaining Life (Years) | |||||||||||||
Outstanding at December 31, 2010 | 2,512,934 | $ | 3.44-3.60 | $ | 3.51 | 2.45 | ||||||||||
Issued | – | |||||||||||||||
Exercised | – | |||||||||||||||
Expired | – | |||||||||||||||
Outstanding at December 31, 2011 | 2,512,934 | $ | 3.44-3.60 | $ | 3.51 | 1.45 | ||||||||||
Issued | 6,523,120 | 1.49-3.03 | 1.65 | |||||||||||||
Exercised | (2,975,457 | ) | 1.49-1.65 | 1.49 | ||||||||||||
Expired | (418,017 | ) | 1.49 | 1.49 | ||||||||||||
Outstanding at December 31, 2012 | 5,642,580 | $ | 1.20 | $ | 1.20 | 2.24 | ||||||||||
Issued | 9,432,000 | 0.44 | 0.44 | |||||||||||||
Exercised | (202,689 | ) | 1.20 | 1.20 | ||||||||||||
Expired | – | |||||||||||||||
Outstanding at December 31, 2013 | 14,871,891 | $ | 0.16-0.44 | $ | 0.34 | 3.51 | ||||||||||