<SEC-DOCUMENT>0000916365-20-000095.txt : 20200429
<SEC-HEADER>0000916365-20-000095.hdr.sgml : 20200429
<ACCEPTANCE-DATETIME>20200429163105
ACCESSION NUMBER:		0000916365-20-000095
CONFORMED SUBMISSION TYPE:	3/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200206
FILED AS OF DATE:		20200429
DATE AS OF CHANGE:		20200429

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Yankee Colin
		CENTRAL INDEX KEY:			0001802675

	FILING VALUES:
		FORM TYPE:		3/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23314
		FILM NUMBER:		20830811

	MAIL ADDRESS:	
		STREET 1:		1103 HAVERHILL DRIVE
		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:			1228

	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>3/A
<SEQUENCE>1
<FILENAME>wf-form3a_158819224740492.xml
<DESCRIPTION>FORM 3/A
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2020-02-06</periodOfReport>

    <dateOfOriginalSubmission>2020-02-10</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001802675</rptOwnerCik>
            <rptOwnerName>Yankee Colin</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 Supply Chain</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12629</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Employee stock option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>73.18</value>
                <footnoteId id="F6"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2027-02-08</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7835.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee stock option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>67.28</value>
                <footnoteId id="F6"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <value>2028-02-07</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>11213.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee stock option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>89.59</value>
                <footnoteId id="F6"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F8"/>
            </exerciseDate>
            <expirationDate>
                <value>2029-02-06</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7165.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Employee stock option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>91.1</value>
                <footnoteId id="F6"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F9"/>
            </exerciseDate>
            <expirationDate>
                <value>2030-02-05</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>11326.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Includes 2,792 shares that were acquired pursuant to grants of restricted stock units (RSUs) under the Tractor Supply Company 2018 Omnibus Incentive Plan. Each RSU entitles the reporting person to receive one share of common stock. The RSUs vest as follows: 33 1/3% on February 5, 2021, 33 1/3% on February 5, 2022, and 33 1/3% on February 5, 2023.</footnote>
        <footnote id="F2">Includes 1,346 shares that were acquired pursuant to grants of RSUs under the Tractor Supply Company 2018 Omnibus Incentive Plan. Each RSU entitles the reporting person to receive one share of common stock. The RSUs vest as follows: 50% on February 6, 2021 and 50% on February 6, 2022.</footnote>
        <footnote id="F3">Includes 2,369 shares that were acquired pursuant to grants of RSUs under the Tractor Supply Company 2009 Stock Incentive Plan. Each RSU entitles the reporting person to receive one share of common stock. The RSUs vest 100% on February 7, 2021.</footnote>
        <footnote id="F4">Includes 899 shares that were acquired pursuant to grants of performance-based restricted share units (PSUs) under the Tractor Supply Company 2009 Stock Incentive Plan. The PSUs vest 100% on February 7, 2021.</footnote>
        <footnote id="F5">Granted pursuant to the Tractor Supply Company 2009 Stock Incentive Plan. The shares subject to this option vested and became exercisable as follows: 33 1/3% on February 8, 2018, 33 1/3% on February 8, 2019, and 33 1/3% on February 8, 2020. 100% of the option is vested.</footnote>
        <footnote id="F6">Exercise price in United States dollars.</footnote>
        <footnote id="F7">Granted pursuant to the Tractor Supply Company 2009 Stock Incentive Plan. The shares subject to this option vested and became exercisable, or will vest, subject to conditions, and become exercisable as follows: 33 1/3% on February 7, 2019, 33 1/3% on February 7, 2020, and 33 1/3% on February 7, 2021. 5,606 shares subject to this option are vested and 5,607 remain unvested.</footnote>
        <footnote id="F8">Granted pursuant to the Tractor Supply Company 2018 Omnibus Incentive Plan. The shares subject to this option vested and became exercisable, or will vest, subject to conditions, and become exercisable as follows: 33 1/3% on February 6, 2020, 33 1/3% on February 6, 2021, and 33 1/3% on February 6, 2022. 2,388 shares subject to this option are vested and 4,777 remain unvested.</footnote>
        <footnote id="F9">Granted pursuant to the Tractor Supply Company 2018 Omnibus Incentive Plan. The shares subject to this option will vest, subject to conditions, and become exercisable as follows: 33 1/3% on February 5, 2021, 33 1/3% on February 5, 2022, and 33 1/3% on February 5, 2023. 100% of shares subject to this option remain unvested.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Colin Yankee: /s/ Kristopher S. Bybee, as Attorney-in-fact</signatureName>
        <signatureDate>2020-04-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
