| | | Warrants outstanding as of December 31, 2013 | | Exercise price | | Expiration date | |
| | | | | $ | | | |
| | | | | | | | |
| Investors of the 2011-2012 Private Placement (**) | | 2,690,712 | | 1.30 | | October 26, 2016 | |
| Placement agent of the 2011-2012 Private Placement (*) (**) | | 434,480 | | 1.00 | | April 8, 2016 | |
| Placement agent of the 2011-2012 Private Placement (*) (**) | | 513,890 | | 1.30 | | April 8, 2016 | |
| October 2012 Private Placement FINRA member (*) | | 148,192 | | 1.50 | | October 16, 2016 | |
| August 2012 Private Placement | | 658,019 | | 1.00 | | April 8, 2014 | |
| August 2012 Private Placement | | 750,019 | | 1.00 | | April 8, 2015 | |
| April-May 2013 Private Placement | | 2,000,000 | | 5.00 | | April 4, 2016 | |
| Placement agent of the April-May 2013 Private Placement (*) | | 400,000 | | 2.50 | | April 4, 2016 | |
| Placement agent of the April-May 2013 Private Placement (*) | | 200,000 | | 5.00 | | April 4, 2016 | |
| Consulting Agreement | | 200,000 | | 1.50 | | October 7, 2014 | |
| Consulting Agreement | | 250,000 | | 1.50 | | April 8, 2015 | |
| | | | | | | | |
| Total outstanding | | 8,245,312 | | | | | |
| (*) | Contain a "cashless exercise" feature |
| (**) | Including certain non-standard anti-dilutive provisions (see also Note 6) |