| Filing Date | Form | Description | Filing Group | Downloads |
| 02.17.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |  |  |  |  |
| 02.17.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 02.17.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 02.17.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 02.17.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 02.17.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 02.17.12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 | | | | |
| 02.14.12 | SC 13G | A statement of beneficial ownership of common stock by certain persons | Other | |  | | |
| 02.10.12 | SC 13G/A | An amendment to the SC 13G filing | Other | | | | |
| 02.09.12 | SC 13G/A | An amendment to the SC 13G filing | Other | | | | |