<SEC-DOCUMENT>0000916365-18-000121.txt : 20181114
<SEC-HEADER>0000916365-18-000121.hdr.sgml : 20181114
<ACCEPTANCE-DATETIME>20181114165804
ACCESSION NUMBER:		0000916365-18-000121
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20181112
FILED AS OF DATE:		20181114
DATE AS OF CHANGE:		20181114

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Mills Robert D
		CENTRAL INDEX KEY:			0001601974

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23314
		FILM NUMBER:		181184867

	MAIL ADDRESS:	
		STREET 1:		TRACTOR SUPPLY COMPANY
		STREET 2:		5401 VIRGINIA WAY
		CITY:			BRENTWOOD
		STATE:			TN
		ZIP:			37027

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRACTOR SUPPLY CO /DE/
		CENTRAL INDEX KEY:			0000916365
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-BUILDING MATERIALS, HARDWARE, GARDEN SUPPLY [5200]
		IRS NUMBER:				133139732
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1230

	BUSINESS ADDRESS:	
		STREET 1:		5401 VIRGINIA WAY
		CITY:			BRENTWOOD
		STATE:			TN
		ZIP:			37027
		BUSINESS PHONE:		6154404600

	MAIL ADDRESS:	
		STREET 1:		5401 VIRGINIA WAY
		CITY:			BRENTWOOD
		STATE:			TN
		ZIP:			37027
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_154223266726412.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-11-12</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000916365</issuerCik>
        <issuerName>TRACTOR SUPPLY CO /DE/</issuerName>
        <issuerTradingSymbol>TSCO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001601974</rptOwnerCik>
            <rptOwnerName>Mills Robert D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TRACTOR SUPPLY COMPANY</rptOwnerStreet1>
            <rptOwnerStreet2>5401 VIRGINIA WAY</rptOwnerStreet2>
            <rptOwnerCity>BRENTWOOD</rptOwnerCity>
            <rptOwnerState>TN</rptOwnerState>
            <rptOwnerZipCode>37027</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP Chief Technology Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-11-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>20278</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>71.84</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>31826</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-11-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>20278</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>97.10</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11548</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>267</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Stock Purchase Plan</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee stock option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>71.84</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2018-11-12</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>20278</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2024-03-26</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>20278.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Granted pursuant to the 2009 Stock Incentive Plan. In general, the shares subject to this option vested and became exercisable as follows: 33 1/3% on March 26, 2015, 33 1/3% on March 26, 2016, and 33 1/3% on March 26, 2017.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Robert D. Mills by: /s/  Kristopher S. Bybee, as Attorney-in-fact</signatureName>
        <signatureDate>2018-11-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex-24.htm
<DESCRIPTION>POA - MILLS ROBERT D 11.08.18
<TEXT>
<!-- Document created using Workiva -->
<html>
<body>
<pre>
POA - MILLS ROBERT D.

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:  That the undersigned director and/or officer of Tractor Supply Company, a Delaware corporation (the "Company"), hereby constitutes and appoints Benjamin F. Parrish, Jr. and/or Kris Bybee as his/her true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for either of him/her and in his/her name, place and stead, in any and all capacities, to sign any and all Securities and Exchange Commission Forms 3, 4 and 5 and other documents relating thereto with respect to the securities of the Company beneficially owned by the undersigned, any and all amendments thereto, and to file the same with the Securities and Exchange Commission, and grants unto said attorney-in-fact and substitute or substitutes full power and authority to do each and every act and thing requested and necessary to be done in and about the premises as fully to all intents and purposes as he/she might do in person, and hereby ratifies and confirms all things that said attorney-in-fact and substitute or substitutes may lawfully do and seek to be done by virtue hereof.  This Power of Attorney shall be valid until such time as it is revoked by the undersigned in writing.

IN WITNESS WHEREOF, the undersigned has hereunto set his/her hand this 8th day of November, 2018.

AGREED:

/s/ Rob Mills

ROB MILLS
</pre>
</body>
</html>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
