| Reporting Person | Date | Transaction | Number of Shares of Common Stock | Price Per Share |
| TCP II | 7/16/13 (1) | Sale | 70,204 | $5.99 |
| Parallel Fund | 7/16/13 (1) | Sale | 364 | $5.99 |
| Executive Fund | 7/16/13 (1) | Sale | 211 | $5.99 |
| TCP II | 7/17/13 (2) | Sale | 67,048 | $6.29 |
| Parallel Fund | 7/17/13 (2) | Sale | 348 | $6.29 |
| Executive Fund | 7/17/13 (2) | Sale | 201 | $6.29 |
| TCP II | 7/18/13 (3) | Sale | 130,531 | $6.62 |
| Parallel Fund | 7/18/13 (3) | Sale | 677 | $6.62 |
| Executive Fund | 7/18/13 (3) | Sale | 392 | $6.62 |
| TCP II | 7/19/13 (4) | Sale | 44,635 | $6.57 |
| Parallel Fund | 7/19/13 (4) | Sale | 231 | $6.57 |
| Executive Fund | 7/19/13 (4) | Sale | 134 | $6.57 |
| (1) | On this date, shares were sold at a range of $5.98 to $6.08 per share. The Reporting Persons undertake to provide, upon request by the Commission staff, full information regarding the number of shares sold at each price. |
| (2) | On this date, shares were sold at a range of $6.13 to $6.50 per share. The Reporting Persons undertake to provide, upon request by the Commission staff, full information regarding the number of shares sold at each price. |
| (3) | On this date, shares were sold at a range of $6.47 to $6.85 per share. The Reporting Persons undertake to provide, upon request by the Commission staff, full information regarding the number of shares sold at each price. |
| (4) | On this date, shares were sold at a range of $6.54 to $6.63 per share. The Reporting Persons undertake to provide, upon request by the Commission staff, full information regarding the number of shares sold at each price. |
