<SEC-DOCUMENT>0001170010-17-000185.txt : 20171108
<SEC-HEADER>0001170010-17-000185.hdr.sgml : 20171108
<ACCEPTANCE-DATETIME>20171108172438
ACCESSION NUMBER:		0001170010-17-000185
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20171101
FILED AS OF DATE:		20171108
DATE AS OF CHANGE:		20171108

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Wilson Charles Joseph
		CENTRAL INDEX KEY:			0001721932

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31420
		FILM NUMBER:		171187592

	MAIL ADDRESS:	
		STREET 1:		12800 TUCKAHOE CREEK PARKWAY
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23238

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CARMAX INC
		CENTRAL INDEX KEY:			0001170010
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-AUTO DEALERS & GASOLINE STATIONS [5500]
		IRS NUMBER:				541821055
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			0228

	BUSINESS ADDRESS:	
		STREET 1:		12800 TUCKAHOE CREEK PARKWAY
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23238
		BUSINESS PHONE:		(804) 747-0422

	MAIL ADDRESS:	
		STREET 1:		12800 TUCKAHOE CREEK PARKWAY
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23238
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>wf-form3_151017986455129.xml
<DESCRIPTION>FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2017-11-01</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001170010</issuerCik>
        <issuerName>CARMAX INC</issuerName>
        <issuerTradingSymbol>KMX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001721932</rptOwnerCik>
            <rptOwnerName>Wilson Charles Joseph</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12800 TUCKAHOE CREEK PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>RICHMOND</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>23238</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2021</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Options (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>44.96</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2021-04-09</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5938.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Options (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>73.76</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <value>2022-04-08</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>15493.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Options (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>51.63</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2023-04-12</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>23194.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Options (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>58.38</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <value>2024-05-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>22399.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F6"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F5"/>
                <footnoteId id="F6"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1177.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F6"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F6"/>
                <footnoteId id="F7"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1714.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F6"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F8"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F6"/>
                <footnoteId id="F8"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1635.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The stock options became exercisable with respect to one-fourth of the underlying shares of Common Stock on each of April 9, 2015, April 9, 2016, and April 9, 2017 and become exercisable with respect to one-fourth of the underlying shares of Common Stock on April 9, 2018.</footnote>
        <footnote id="F2">The stock options became exercisable with respect to one-fourth of the underlying shares of Common Stock on each of April 8, 2016 and April 8, 2017 and become exercisable with respect to one-fourth of the underlying shares of Common Stock on each of April 8, 2018 and April 8, 2019.</footnote>
        <footnote id="F3">The stock options became exercisable with respect to one-fourth of the underlying shares of Common Stock on April 12, 2017 and will become exercisable with respect to one-fourth of the underlying share of Common Stock on each of April 12, 2018, April 12, 2019 and April 12, 2020.</footnote>
        <footnote id="F4">The stock options become exercisable with respect to one-fourth of the underlying shares of Common Stock on each of May 1, 2018, May 1, 2019, May 1, 2020 and May 1, 2021.</footnote>
        <footnote id="F5">The restricted stock units shall vest on April 8, 2018.</footnote>
        <footnote id="F6">Shares of Company common stock will be issued to the Reporting Person following vesting of the restricted stock units, which are referred to by the Company as market stock units (MSUs), in accordance with the terms of the Form of Notice of Market Stock Unit Grant filed as Exhibit 10.2 to the Company's Current Report on Form 8-K filed on January 26, 2015. The minimum number of shares of Company common stock that will be issued to the Reporting Person at payment is zero, and the maximum number of shares of Company common stock that will be issued at payment is two times the number of MSUs.</footnote>
        <footnote id="F7">The restricted stock units shall vest on April 12, 2019.</footnote>
        <footnote id="F8">The restricted stock units shall vest on May 1, 2020.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Christine Carter, attorney-in-fact</signatureName>
        <signatureDate>2017-11-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>wilsonpoa.htm
<DESCRIPTION>POWER OF ATTORNEY - WILSON
<TEXT>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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    <head>
        <!-- Document created using Wdesk 1 -->
        <!-- Copyright 2017 Workiva -->
        <title>Document</title>
    </head>
    <body style="font-family:Times New Roman;font-size:10pt;">
<div><a name="s00DD974166C9CF6FE404924BEF4FD5CF"></a></div><div></div><div><br></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:14pt;"><font style="font-family:Arial;font-size:14pt;font-weight:bold;">POWER OF ATTORNEY</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">The undersigned with respect to the matters described herein constitutes and appoints Jill Livesay, Thomas Reedy, Lisa Lee, Christine Carter, John Stuckey, Will Hulcher, David Zawitz and Eric Margolin, each of whom may act individually, as my true and lawful attorney-in-fact to:</font></div><div style="line-height:120%;text-align:justify;padding-left:48px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;padding-left:24px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">1)&#160;&#160;&#160;&#160;Execute for and on behalf of the undersigned, in the undersigned&#8217;s capacity as an officer and/or director of CarMax Inc. (the &#8220;Company&#8221;), Forms 3, 4, and 5 (or any amendments thereto) in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;</font></div><div style="line-height:120%;text-align:justify;padding-left:24px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-left:24px;text-align:justify;text-indent:0px;"><font style="text-align:justify;font-family:Arial;font-size:10pt;padding-right:24px;">2)</font><font style="font-family:Arial;font-size:10pt;">Do and perform any and all acts for and on behalf of the undersigned that may be necessary or desirable to complete and execute any such Forms 3, 4, and 5 (or any amendments thereto) and timely file such forms with the United States Securities and Exchange Commission and any stock exchange or similar authority; and </font></div><div style="line-height:120%;text-align:justify;padding-left:24px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;"><br></font></div><div style="line-height:120%;padding-left:24px;text-align:justify;text-indent:0px;"><font style="text-align:justify;font-family:Arial;font-size:10pt;padding-right:24px;">3)</font><font style="font-family:Arial;font-size:10pt;">Take any other action of any type whatsoever in connection with the foregoing that, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned. The undersigned understands and confirms that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact&#8217;s discretion.</font></div><div style="line-height:120%;text-align:justify;padding-left:36px;text-indent:-12px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">The undersigned hereby grants to such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted.  The undersigned acknowledges that the forgoing attorney-in-fact, in serving in such capacity at the request of the undersigned, is not assuming, nor is the Company assuming, any of the undersigned&#8217;s responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.</font></div><div style="line-height:120%;text-align:justify;padding-left:36px;text-indent:-12px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4, and 5 with respect to the Company.</font></div><div style="line-height:120%;text-align:justify;padding-left:36px;text-indent:-12px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 1</font><font style="font-family:Arial;font-size:10pt;"><sup style="vertical-align:top;line-height:120%;font-size:6pt">st</sup></font><font style="font-family:Arial;font-size:10pt;">&#32;day of November, 2017.</font></div><div style="line-height:120%;text-align:justify;padding-left:36px;text-indent:-12px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;padding-left:36px;text-indent:-12px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:justify;padding-left:336px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;text-decoration:underline;">/s/ C. Joseph Wilson</font></div><div style="line-height:120%;text-align:justify;padding-left:336px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">C. Joseph Wilson</font></div><div><br></div><div></div>    </body>
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</SEC-DOCUMENT>
