CARMAX INC — Director's Dealing 2010

May 11, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CARMAX INC (KMX)
CIK: 0001170010
Period of Report: 2010-05-07

Reporting Person: TIEFEL WILLIAM R (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-07	Common Stock	M	11470	$7.025	Acquired	114991	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-07	Stock Options (Right to Buy)	$7.025	M	11470	Disposed	2010-10-09	Common Stock (11470)	Direct

Footnotes

F1: This option was previously reported as covering 5,735 shares at an exercise price of $14.05 per share, but was adjusted to reflect the Issuer's 2-for-1 stock split in the form of a share dividend, which occurred on March 26, 2007.