| 8-K | Report of unscheduled material events or corporate event | May 14, 2013 |     |
| 4 | Statement of changes in beneficial ownership of securities | May 14, 2013 |    |
| 4 | Statement of changes in beneficial ownership of securities | May 14, 2013 |    |
| 4 | Statement of changes in beneficial ownership of securities | May 14, 2013 |    |
| 4 | Statement of changes in beneficial ownership of securities | May 14, 2013 |    |
| 4 | Statement of changes in beneficial ownership of securities | May 14, 2013 |    |
| 4 | Statement of changes in beneficial ownership of securities | May 14, 2013 |    |
| 4 | Statement of changes in beneficial ownership of securities | May 14, 2013 |    |
| 3 | Initial filing by director officer or owner of more than ten percent. | May 14, 2013 |    |
| 8-K | Report of unscheduled material events or corporate event | May 14, 2013 |     |
| D | Official notice of an offering of securities that is made without registration under the Securities Act in reliance on an exemption provided by Regulation D and Section 4(6) under the Act | May 13, 2013 |    |
| 8-K | Report of unscheduled material events or corporate event | May 10, 2013 |     |
| 10-Q | Quarterly report which provides a continuing view of a company's financial position | May 8, 2013 |       |
| 8-K | Report of unscheduled material events or corporate event | May 8, 2013 |     |
| 4 | Statement of changes in beneficial ownership of securities | Apr 17, 2013 |    |
| 4 | Statement of changes in beneficial ownership of securities | Apr 17, 2013 |    |
| SC 13D/A | Amendment to a SC 13D filing | Apr 8, 2013 |     |
| DEF 14A | Official notification to shareholders of matters to be brought to a vote ("Proxy") | Apr 3, 2013 |     |
| DEFA14A | Additional proxy soliciting materials - definitive | Apr 3, 2013 |     |
| 8-K | Report of unscheduled material events or corporate event | Mar 26, 2013 |     |
| 4 | Statement of changes in beneficial ownership of securities | Mar 18, 2013 |    |
| 4 | Statement of changes in beneficial ownership of securities | Mar 18, 2013 |    |
| 8-K | Report of unscheduled material events or corporate event | Mar 15, 2013 |     |
| 8-K | Report of unscheduled material events or corporate event | Mar 15, 2013 |     |
| 10-K | Annual report which provides a comprehensive overview of the company for the past year | Mar 14, 2013 |       |