The following tables summarize common stock warrants outstanding by entity:
| Weighted | ||||||||||||||||
| Weighted | average | |||||||||||||||
| average | Aggregate | remaining | ||||||||||||||
| exercise | intrinsic | contractual | ||||||||||||||
| Warrants to purchase Inova common stock | Warrants | price | value | life (years) | ||||||||||||
| Outstanding at April 30, 2011 | 113,677 | $ | 3.00 | $ | 676,196 | 2.56 | ||||||||||
| Granted | — | — | ||||||||||||||
| Exercised | — | — | ||||||||||||||
| Forfeited | — | — | ||||||||||||||
| Expired | (15,281 | ) | 0.00 | |||||||||||||
| Outstanding at April 30, 2012 | 98,395 | $ | 3.00 | $ | 77,441 | 1.57 | ||||||||||
| Granted | — | — | ||||||||||||||
| Exercised | — | — | ||||||||||||||
| Forfeited | — | — | ||||||||||||||
| Expired | (22,543 | ) | 13.31 | |||||||||||||
| Outstanding at April 30, 2013 | 75,853 | $ | 0.00 | $ | 39,414 | 1.21 | ||||||||||
| Weighted | |||||||||||
| Weighted | average | ||||||||||
| average | Aggregate | remaining | |||||||||
| exercise | intrinsic | contractual | |||||||||
| Warrants to purchase Trakkers common stock | Warrants | price | value | life (years) | |||||||
| Outstanding at April 30, 2011 | 13.50% | $ | - | $ | 10,606 | 3.18 | |||||
| Granted | - | - | |||||||||
| Exercised | - | - | |||||||||
| Forfeited | - | - | |||||||||
| Expired | - | - | |||||||||
| Outstanding at April 30, 2012 | 13.50% | $ | - | $ | - | 2.18 | |||||
| Granted | - | - | |||||||||
| Exercised | - | - | |||||||||
| Forfeited | - | - | |||||||||
| Expired | - | - | |||||||||
| Outstanding at April 30, 2013 | 13.50% | $ | - | $ | - | 1.18 |