| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| NVSL | Executive Vice President | Jun 29, 2011 | Option Exercise | $8.00 | 3,111 | 24,888 | 13,283 | Jun 30, 2011, 03:49 PM |
| NVSL | Executive Vice President | Dec 03, 2010 | Buy | $6.38 | 50 | 319 | 50 | Dec 07, 2010, 09:22 AM |
| Symbol | Relationship | Date | Transaction | Value($) |
| NVSL | Executive Vice President | Jun 29, 2011 | Option Exercise | 24,888 |
| NVSL | Executive Vice President | Dec 03, 2010 | Buy | 319 |