| Filing Date | Form | Description | Filing Group | Downloads | | 05/08/12 | 4/A | Amendment to a previously filed 4 | 3,4,5 |
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| | 04/27/12 | 11-K | An annual report of employee stock purchase, savings and similar plans | Annual Filings |
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| | 04/27/12 | 11-K | An annual report of employee stock purchase, savings and similar plans | Annual Filings |
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| | 04/27/12 | 11-K | An annual report of employee stock purchase, savings and similar plans | Annual Filings |
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| | 04/27/12 | 11-K | An annual report of employee stock purchase, savings and similar plans | Annual Filings |
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| | 04/27/12 | 11-K | An annual report of employee stock purchase, savings and similar plans | Annual Filings |
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| | 04/13/12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |
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| | 04/06/12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |
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| | 04/05/12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |
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| | 04/03/12 | 4 | Statement of changes in beneficial ownership of securities | 3,4,5 |
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