X0303 4 2011-03-30 0000920148 LABORATORY CORP OF AMERICA HOLDINGS LH 0001454944 Fonseca Lidia 531 SOUTH SPRING STREET BURLINGTON NC 27215 1 Chief Information Officer Common Stock 2011-03-30 4 A 0 1837 0 A 5922 D Common Stock 2011-03-30 4 F 0 597 91.57 D 5325 D Shares granted on March 30, 2011, pursuant to a performance award granted on May 12, 2008, relating to performance during the three year period ended December 31, 2010. Stock withholding to satisfy tax and withholding obligations. /s/ F. Samuel Eberts III, Attorney-in-Fact for Lidia Fonseca 2011-04-01