| Schedule of summary of common stock warrants (Tables) |
The following table summarizes common stock warrants as of each period: | | | | | | | | | |
|
| Series A
|
| Series B
|
| Series C
|
| Series D
|
| A,B,C,D Total Warrants
|
| Outstanding at December 31, 2013
| 1,188,909
|
| 5,332,981
|
| 128,180
|
| 15,312,627
|
| 21,962,697
|
| Issued
| -
|
| -
|
| -
|
| -
|
| -
|
| Exercised
| (1,188,909)
|
| (5,328,481)
|
| (128,180)
|
| (807,861)
|
| (7,453,431)
|
| Outstanding at December 31, 2014
| -
|
| 4,500
|
| -
|
| 14,504,766
|
| 14,509,266
|
| Issued
| -
|
| -
|
| -
|
| -
|
| -
|
| Exercised
| -
|
| -
|
| -
|
| (226,740)
|
| (226,740)
|
| Outstanding at March 31, 2015
| -
|
| 4,500
|
| -
|
| 14,278,026
|
| 14,282,526
|
Series E, F, G and H warrants were issued for investment banking and advisory services during 2009. The following table summarizes E, F, G and H warrants as of each period: | | | | | | | | | |
|
| Series E $1.00 exercise price
|
| Series F $3.00 exercise price
|
| Series G $0.65 exercise price
|
| Series H $7.00 exercise price
|
| E,F,G,H Total Warrants
|
| Outstanding at December 31, 2013
| 107,931
|
| 369,037
|
| 88,579
|
| 689,159
|
| 1,254,706
|
| Issued
| -
|
| -
|
| -
|
| -
|
| -
|
| Exercised
| (107,931)
|
| (369,037)
|
| (88,579)
|
| -
|
| (565,547)
|
| Outstanding at December 31, 2014
| -
|
| -
|
| -
|
| 689,159
|
| 689,159
|
| Issued
| -
|
| -
|
| -
|
| -
|
| -
|
| Exercised
| -
|
| -
|
| -
|
| -
|
| -
|
| Outstanding at March 31, 2015
| -
|
| -
|
| -
|
| 689,159
|
| 689,159
|
| Shares issued in 2014 as a result of cashless exercise
| 73,388
|
| 210,870
|
| 70,152
|
| -
|
| 354,410
|
|