SC 13G: Statement of acquisition of beneficial ownership by individuals-T. ROWE PRICE ASSOCIATES, INC.(5.7%)
4: Statement of changes in beneficial ownership of securities-Director Klein Karin
4: Statement of changes in beneficial ownership of securities-Director LINNEMAN PETER
4: Statement of changes in beneficial ownership of securities-Director BLANKENSHIP C RONALD
SC 13G/A: Statement of acquisition of beneficial ownership by individuals (Amendment)-BlackRock, Inc.(12.1%)
SC 13G/A: Statement of acquisition of beneficial ownership by individuals (Amendment)-BlackRock, Inc.(12.1%)
SC 13G: Statement of acquisition of beneficial ownership by individuals-JPMORGAN CHASE & CO.(5.9%)
4: Statement of changes in beneficial ownership of securities-Officer HERMAN MICHAEL R
4: Statement of changes in beneficial ownership of securities-Officer WIBBENMEYER NICHOLAS ANDREW
4: Statement of changes in beneficial ownership of securities-Officer ROTH ALAN TODD
4: Statement of changes in beneficial ownership of securities-Director BLANKENSHIP C RONALD
4: Statement of changes in beneficial ownership of securities-Director LINNEMAN PETER
4: Statement of changes in beneficial ownership of securities-Director Klein Karin
3: Initial statement of beneficial ownership of securities-Director Anderson Gary E
4: Statement of changes in beneficial ownership of securities-Director Anderson Gary E
4: Statement of changes in beneficial ownership of securities-Officer STEIN MARTIN E JR
11-K: Annual report of employee stock purchase, savings and similar plans (and amendment thereto)
4: Statement of changes in beneficial ownership of securities-Director Simmons James H. III
4: Statement of changes in beneficial ownership of securities-Director OCONNOR DAVID P
4: Statement of changes in beneficial ownership of securities-Director LINNEMAN PETER
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