The below table summarizes the warrants outstanding as per the below reporting dates.
| Outstanding Warrants | Exercise/ Conversion price(s) (range) | Expiring | 2013 | 2012 | 2011 | |||||||||||||||
| Warrants - Acquisitions | $0.63- $2.25 | 2013 | - | 3,437,953 | 3,879,485 | |||||||||||||||
| Warrants - Fundraising | $0.85- $2.00 | 2013 - 2018 | 37,229,230 | 46,322,101 | 46,867,101 | |||||||||||||||
| Warrants - Other | $2.21 | 2016 | 18,659 | 18,659 | 18,659 | |||||||||||||||
| 37,247,889 | 49,778,713 | 50,765,245 | ||||||||||||||||||