| Type | Description | Date | |
| NT 10-K | NT 10-K - Notification of inability to timely file Form 10-K 405, 10-K, 10-KSB 405, 10-KSB, 10-KT, or 10-KT405 | March 31, 2015 | |
| 4 | 4 - Statement of changes in beneficial ownership of securities | March 17, 2015 | |
| 4 | 4 - Statement of changes in beneficial ownership of securities | February 26, 2015 | |
| 4 | 4 - Statement of changes in beneficial ownership of securities | February 13, 2015 | |
| 4 | 4 - Statement of changes in beneficial ownership of securities | February 13, 2015 | |
| 4 | 4 - Statement of changes in beneficial ownership of securities | February 4, 2015 | |
| 4 | 4 - Statement of changes in beneficial ownership of securities | February 3, 2015 | |
| 8-K | 8-K - Current report | January 28, 2015 | |
| 8-K | 8-K - Current report | January 28, 2015 | |
| 4 | 4 - Statement of changes in beneficial ownership of securities | January 28, 2015 | |
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