4 | Statement of changes in beneficial ownership of securities | Aug 17, 2015 |    |
4 | Statement of changes in beneficial ownership of securities | Aug 17, 2015 |    |
4 | Statement of changes in beneficial ownership of securities | Jun 11, 2015 |     |
4 | Statement of changes in beneficial ownership of securities | Jun 11, 2015 |     |
4 | Statement of changes in beneficial ownership of securities | Jun 11, 2015 |     |
4 | Statement of changes in beneficial ownership of securities | Jun 11, 2015 |     |
4 | Statement of changes in beneficial ownership of securities | Jun 11, 2015 |     |
4 | Statement of changes in beneficial ownership of securities | Jun 11, 2015 |     |
3 | Initial filing by director officer or owner of more than ten percent. | Mar 23, 2015 |     |
4 | Statement of changes in beneficial ownership of securities | Mar 2, 2015 |    |
3 | Initial filing by director officer or owner of more than ten percent. | Mar 2, 2015 |     |