| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| HGSI | Exec. VP, Gen Counsel & Sec. | Jul 30, 2012 | Option Exercise | $14.25 | 165,032 | 2,351,706 | 0 | Aug 01, 2012, 11:53 AM |
| HGSI | Exec. VP, Gen Counsel & Sec. | Jul 23, 2012 | Option Exercise | $7.32 | 76,293 | 558,598 | 165,032 | Jul 24, 2012, 01:22 PM |
| HGSI | Exec. VP, Gen Counsel & Sec. | May 02, 2011 | Option Exercise | $0.52 | 8,653 | 4,500 | 97,392 | May 04, 2011, 02:57 PM |
| HGSI | Exec. VP, Gen Counsel & Sec. | May 02, 2011 | Sale | $30.00 | 8,653 | 259,590 | 88,739 | May 04, 2011, 02:57 PM |
| HGSI | Exec. VP, Gen Counsel & Sec. | Apr 13, 2011 | Option Exercise | $9.35 | 20,900 | 195,436 | 109,639 | Apr 15, 2011, 11:53 AM |
| HGSI | Exec. VP, Gen Counsel & Sec. | Apr 14, 2011 | Option Exercise | $9.35 | 31,401 | 293,631 | 120,140 | Apr 15, 2011, 11:53 AM |
| HGSI | Exec. VP, Gen Counsel & Sec. | Apr 13, 2011 | Sale | $30.00 | 20,900 | 627,000 | 88,739 | Apr 15, 2011, 11:53 AM |
| HGSI | Exec. VP, Gen Counsel & Sec. | Apr 14, 2011 | Sale | $30.00 | 31,401 | 942,030 | 88,739 | Apr 15, 2011, 11:53 AM |
| HGSI | Exec. VP, Gen Counsel & Sec. | Sep 20, 2010 | Option Exercise | $9.35 | 26,000 | 243,126 | 114,739 | Sep 22, 2010, 12:06 PM |
| HGSI | Exec. VP, Gen Counsel & Sec. | Sep 20, 2010 | Sale | $30.01 | 26,000 | 780,234 | 88,739 | Sep 22, 2010, 12:06 PM |
| HGSI | Exec. VP, Gen Counsel & Sec. | Aug 25, 2010 | Option Exercise | $9.35 | 26,000 | 243,100 | 114,739 | Aug 27, 2010, 02:22 PM |
| HGSI | Exec. VP, Gen Counsel & Sec. | Aug 25, 2010 | Sale | $28.00 | 26,000 | 728,029 | 112,544 | Aug 27, 2010, 02:22 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| HGSI | Exec. VP, Gen Counsel & Sec. | Jul 30, 2012 | Option Exercise | 2,351,706 |
| HGSI | Exec. VP, Gen Counsel & Sec. | Jul 23, 2012 | Option Exercise | 558,598 |
| HGSI | Exec. VP, Gen Counsel & Sec. | May 02, 2011 | Option Exercise | 4,500 |
| HGSI | Exec. VP, Gen Counsel & Sec. | May 02, 2011 | Sale | 259,590 |
| HGSI | Exec. VP, Gen Counsel & Sec. | Apr 13, 2011 | Option Exercise | 195,436 |
| HGSI | Exec. VP, Gen Counsel & Sec. | Apr 14, 2011 | Option Exercise | 293,631 |
| HGSI | Exec. VP, Gen Counsel & Sec. | Apr 13, 2011 | Sale | 627,000 |
| HGSI | Exec. VP, Gen Counsel & Sec. | Apr 14, 2011 | Sale | 942,030 |
| HGSI | Exec. VP, Gen Counsel & Sec. | Sep 20, 2010 | Option Exercise | 243,126 |
| HGSI | Exec. VP, Gen Counsel & Sec. | Sep 20, 2010 | Sale | 780,234 |
| HGSI | Exec. VP, Gen Counsel & Sec. | Aug 25, 2010 | Option Exercise | 243,100 |
| HGSI | Exec. VP, Gen Counsel & Sec. | Aug 25, 2010 | Sale | 728,029 |