| Filing Date | Form | Description | Filing Group | | 05/17/13 | 8-K | Report of unscheduled material events or corporate event | Current Reports |
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| | 05/09/13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |
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| | 05/08/13 | 3 | Initial filing by director officer or owner of more than ten percent. | 3,4,5 |
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| | 05/08/13 | 8-K | Report of unscheduled material events or corporate event | Current Reports |
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| | 05/07/13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |
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| | 05/07/13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |
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| | 05/07/13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |
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| | 05/07/13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |
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| | 05/07/13 | S-8 | Securities offered to employees pursuant to employee benefit plans | Registration Statements |
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| | 05/07/13 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |
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