| Date | Name | Title | Type | Security | Shares | Price | Value | Ownership | Reported |
| 06/21/2012 | Highland Crusader Offshore Partners, L.P. | 10% Owner | Sale | Common Shares | 1.1M | $15.43 | $17.2M | | 06/21/2012 |
| 05/12/2011 | Gross Jeffrey M | SVP, Research & Development | Other (disposition) | Common Stock | 9k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Gross Jeffrey M | SVP, Research & Development | Other (disposition) | Common Stock | 6k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Gross Jeffrey M | SVP, Research & Development | Other (disposition) | Common Stock | 1.5k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Gross Jeffrey M | SVP, Research & Development | Other (disposition) | Common Stock | 2k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Gross Jeffrey M | SVP, Research & Development | Other (disposition) | Common Stock | 20k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Gross Jeffrey M | SVP, Research & Development | Other (disposition) | Common Stock | 12.5k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Gross Jeffrey M | SVP, Research & Development | Other (disposition) | Stock Option w/Tandem SAR | 85k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Gross Jeffrey M | SVP, Research & Development | Other (disposition) | Stock Option w/Tandem SAR | 150k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Gross Jeffrey M | SVP, Research & Development | Other (disposition) | Stock Option w/Tandem SAR | 100k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Gross Jeffrey M | SVP, Research & Development | Other (disposition) | Stock Option w/Tandem SAR | 25k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | McMasters David | SVP, Legal | Other (disposition) | Common Stock | 2k | $0.00 | $0 | Spouse | 05/12/2011 |
| 05/12/2011 | McMasters David | SVP, Legal | Other (disposition) | Common Stock | 800 | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | McMasters David | SVP, Legal | Other (disposition) | Stock Option w/Tandem SAR | 135k | $1.05 | $141.8k | | 05/12/2011 |
| 05/12/2011 | McMasters David | SVP, Legal | Other (disposition) | Stock Option w/Tandem SAR | 200k | $0.27 | $54k | | 05/12/2011 |
| 05/12/2011 | McMasters David | SVP, Legal | Other (disposition) | Stock Option w/Tandem SAR | 200k | $0.16 | $32k | | 05/12/2011 |
| 05/12/2011 | McMasters David | SVP, Legal | Other (disposition) | Awards (Options w/Tandem SAR) | 50k | $13.47 | $673.4k | | 05/12/2011 |
| 05/12/2011 | McMasters David | SVP, Legal | Other (disposition) | Awards (Options w/Tandem SAR) | 175k | $7.65 | $1.3M | | 05/12/2011 |
| 05/12/2011 | Dent Jay Bernard | SVP, Finance | Other (disposition) | Awards (Options w/Tandem SAR) | 65k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Dent Jay Bernard | SVP, Finance | Other (disposition) | Common Stock | 6k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Dent Jay Bernard | SVP, Finance | Other (disposition) | Common Stock | 8k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Dent Jay Bernard | SVP, Finance | Other (disposition) | Common Stock | 2.7k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Dent Jay Bernard | SVP, Finance | Other (disposition) | Stock Option w/Tandem SAR | 35k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Dent Jay Bernard | SVP, Finance | Other (disposition) | Stock Option w/Tandem SAR | 75k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Dent Jay Bernard | SVP, Finance | Other (disposition) | Stock Option w/Tandem SAR | 70k | $0.00 | $0 | | 05/12/2011 |
| 05/12/2011 | Hunter William L | CEO & President | Other (disposition) | Common Stock | 435.4k | $0.17 | $74k | Spouse | 05/12/2011 |
| 05/12/2011 | Hunter William L | CEO & President | Other (disposition) | Common Stock | 375k | $0.17 | $63.8k | Spouse | 05/12/2011 |
| 05/12/2011 | Hunter William L | CEO & President | Other (disposition) | Common Stock | 435.4k | $0.00 | $0 | Spouse | 05/12/2011 |
| 05/12/2011 | Hunter William L | CEO & President | Other (disposition) | Common Stock | 375k | $0.00 | $0 | Spouse | 05/12/2011 |
| 05/12/2011 | Hunter William L | CEO & President | Other (disposition) | Common Stock | 102k | $0.00 | $0 | Spouse | 05/12/2011 |
| 05/12/2011 | Hunter William L | CEO & President | Other (disposition) | Common Stock | 3.3M | $0.00 | $0 | Spouse | 05/12/2011 |
| 05/12/2011 | Hunter William L | CEO & President | Other (disposition) | Common Stock | 567.6k | $0.00 | $0 | Spouse | 05/12/2011 |
| 05/12/2011 | Hunter William L | CEO & President | Other (disposition) | Common Stock | 156.9k | $0.00 | $0 | Spouse | 05/12/2011 |
| 05/12/2011 | Hunter William L | CEO & President | Other (disposition) | Common Stock | 33k | $0.00 | $0 | Spouse | 05/12/2011 |
| 05/12/2011 | Hunter William L | CEO & President | Other (disposition) | Common Stock | 89.7k | $0.00 | $0 | Spouse | 05/12/2011 |
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