LABCORP HOLDINGS INC. — Director's Dealing 2013

May 23, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: LABORATORY CORP OF AMERICA HOLDINGS (LH)
CIK: 0000920148
Period of Report: 2013-05-21

Reporting Person: Hayes William B (Chief Financial Officer, EVP)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-21	Common Stock	M	55000	$80.37	Acquired	78574	Direct
2013-05-21	Common Stock	S	55000	$100.00	Disposed	23574	Direct
2013-05-21	Common Stock	M	72200	$75.63	Acquired	95774	Direct
2013-05-21	Common Stock	S	72200	$100.00	Disposed	23574	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-21	Non-qualified Stock Options	$80.37	M	55000	Disposed	2017-02-20	Common Stock (55000)	Direct
2013-05-21	Non-qualified Stock Options	$75.63	M	72200	Disposed	2018-05-07	Common Stock (72200)	Direct

Footnotes

F1: Pursuant to a plan in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934.

F2: Employee stock option (right to buy) granted pursuant to the Laboratory Corporation of America Holdings 2008 Stock Incentive Plan.

F3: The option vests in three equal annual installments beginning on the date reflected in this column.