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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
Common Stock	Disposition	2011-02-09	718	$90.74	24,726	No	4	F	Direct
Common Stock	Acquisiton	2011-02-09	5,300	$0.00	30,026	No	4	A	Direct
Common Stock	Disposition	2011-02-10	1,448	$88.13	28,578	No	4	S	Direct
Common Stock	Acquisiton	2011-02-10	30,367	$60.04	58,945	No	4	M	Direct
Common Stock	Disposition	2011-02-10	887	$87.73	58,058	No	4	F	Direct
Common Stock	Disposition	2011-02-10	27,467	$88.09	30,591	No	4	S	Direct
Common Stock	Disposition	2011-02-10	2,900	$89.05	27,691	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	F	Direct
No	4	A	Direct
No	4	S	Direct
No	4	M	Direct
No	4	F	Direct
No	4	S	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	Acquisiton	2011-02-09	56,400	$0.00	56,400	$90.74
Common Stock	Non-qualified Stock Options	Disposition	2011-02-10	30,367	$0.00	30,367	$60.04

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
56,400	2012-02-09	2021-02-09	No	4	A	Direct
30,367	2010-02-10	2019-02-10	No	4	M	Direct

Footnotes

Stock withholding to satisfy tax and withholding obligations.
Amount shown reflects a 2-for-1 stock split effective on May 10, 2002.
Pursuant to a plan in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934.
The price of $88.09 per share represents a weighted average of sales prices ranging from $87.704 to $88.695 per share. The reporting person undertakes to provide upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.
The price of $89.05 per share represents a weighted average of sales prices ranging from $88.74 to $89.68 per share. The reporting person undertakes to provide upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price.
Employee stock option (right to buy) granted pursuant to the Laboratory Corporation of America Holdings 2008 Stock Incentive Plan.
The option vests in three equal annual installments beginning on the date reflected in this column.
Common stock purchase option granted under the Laboratory Corporation of America Holdings 2008 Stock Incentive Plan.
The option vests in three equal annual installments beginning on the date reflected in this column. 30,367 remain subject to future vesting.