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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1170010	Carmax Inc	KMX	Retail-Auto Dealers & Gasoline Stations (5500)	541821055

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1180655	Thomas Stemberg	12800 Tuckahoe Creek Parkway Richmond VA 23238		Yes	No	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	2010-10-29	3,598	$15.72	29,930	No	4	M	Direct
Common Stock	Disposition	2010-10-29	3,598	$30.01	26,332	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	Stock Options (Right to Buy)	Disposition	2010-10-29	3,598	$0.00	3,598	$15.72

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2004-11-19	2011-11-19	No	4	M	Direct

Footnotes

The shares with respect to this transaction were sold at prices ranging from $30.00 to $30.02. Upon request, the Reporting Person will provide the Securities and Exchange Commission staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price.
This option was previously reported as covering 1,799 shares at an exercise price of $31.43 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.