| Individual/Entity | Most Recent Trans. | Shares Owned as of Trans. Date | BLOTT PETER J Officer | Disposition (Non Open Market) 16-Dec-09 | 90,925 16-Dec-09 | CHAUDHURI BHASKAR Officer | Acquisition (Non Open Market) 10-Dec-09 | 117,295 10-Dec-09 | DE SILVA RAJIV Officer | Acquisition (Non Open Market) 10-Sep-09 | 107,638 10-Sep-09 | HEALTHCOR MANAGEMENT, L.P. Beneficial Owner (10% or more) | Sale 18-Nov-09 | 7,000,000
18-Nov-09 | HEALTHCOR OFFSHORE GP, LLC Beneficial Owner (10% or more) | Sale 18-Nov-09 | 7,000,000
18-Nov-09 | INGRAM ROBERT ALEXANDER Director | Acquisition (Non Open Market) 4-Jan-10 | 38,481 4-Jan-10 | KARLSON ELISA A. Officer | Disposition (Non Open Market) 27-Jul-09 | 84,140 27-Jul-09 | KOPPES RICHARD Director | Acquisition (Non Open Market) 4-Jan-10 | 27,532 4-Jan-10 | KUGELMAN LARRY Director | Acquisition (Non Open Market) 4-Jan-10 | 34,155 4-Jan-10 | LONNER ANDERS Director | Acquisition (Non Open Market) 4-Jan-10 | 9,393 4-Jan-10 | MELAS KYRIAZI THEO Director | Acquisition (Non Open Market) 4-Jan-10 | 44,166 4-Jan-10 | MIN STEVE T. Officer | Disposition (Non Open Market) 11-Aug-09 | 60,946 11-Aug-09 | MORFIT G MASON Director | Acquisition (Non Open Market) 12-May-09 | 22,010 12-May-09 | PEARSON J. MICHAEL Officer | Disposition (Non Open Market) 7-Dec-09 | 1,036,038 7-Dec-09 | PROVENCIO NORMA ANN Director | Acquisition (Non Open Market) 4-Jan-10 | 39,558 4-Jan-10 | STEFANO STEPHEN F. Director | Acquisition (Non Open Market) 4-Jan-10 | 13,394 4-Jan-10 | VALUEACT HOLDINGS, L.P. Beneficial Owner (10% or more) | Purchase 28-Jul-09 | 17,791,367 28-Jul-09 |
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