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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
920148	Laboratory Corp Of America Holdings	LH	Services-Medical Laboratories (8071)	133757370

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1320940	B William Hayes	531 South Spring Street Burlington NC 27215	Chief Financial Officer, Evp	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2010-12-27	30,366	$60.04	55,810	No	4	M	Direct
Common Stock	Disposition	2010-12-27	30,366	$87.95	25,444	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Non-qualified Stock Options	Disposition	2010-12-27	30,366	$0.00	30,366	$60.04

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
60,734	2010-02-10	2019-02-10	No	4	M	Direct

Footnotes

Pursuant to a plan in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934.
The option vests in three equal annual installments beginning on the date reflected in this column. 60,734 shares remain subject to future vesting.
Amount shown reflects a 2-for-1 stock split effective on May 10, 2002.
Common stock purchase option granted under the Laboratory Corporation of America Holdings 2008 Stock Incentive Plan.
The price of $87.9504 per share represents a weighted average of sales prices ranging from $87.54 to $88.27 per share. The reporting person undertakes to provide upon request by the Commission staff, the issuer, or asecurity holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.