| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 04/05/12 | 3 | Form 3: Initial statement of beneficial ownership of securities | 1 | |
| 04/02/12 | 3 | Form 3: Initial statement of beneficial ownership of securities | 1 | |
| 02/24/12 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 07/07/11 | 3 | Form 3: Initial statement of beneficial ownership of securities | 1 | |
| 06/13/11 | 3 | Form 3: Initial statement of beneficial ownership of securities | 1 | |
| 06/10/11 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 06/10/11 | 3 | Form 3: Initial statement of beneficial ownership of securities | 1 | |
| 10/18/10 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 10/05/10 | 4/A | Form 4/A: Statement of changes in beneficial ownership of securities | 1 | |
| 10/05/10 | 4/A | Form 4/A: Statement of changes in beneficial ownership of securities | 1 |