| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| MACK | EVP of Development | Feb 05, 2013 | Option Exercise | $2.12 | 41,507 | 87,995 | 141,507 | Feb 06, 2013, 12:15 PM |
| MACK | EVP of Development | Dec 18, 2012 | Option Exercise | $2.12 | 100,000 | 212,000 | 100,000 | Dec 19, 2012, 10:41 AM |
| Symbol | Relationship | Date | Transaction | Value($) |
| MACK | EVP of Development | Feb 05, 2013 | Option Exercise | 87,995 |
| MACK | EVP of Development | Dec 18, 2012 | Option Exercise | 212,000 |