<SEC-DOCUMENT>0001209191-15-012269.txt : 20150211
<SEC-HEADER>0001209191-15-012269.hdr.sgml : 20150211
<ACCEPTANCE-DATETIME>20150211192908
ACCESSION NUMBER:		0001209191-15-012269
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150209
FILED AS OF DATE:		20150211
DATE AS OF CHANGE:		20150211

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FARMER BROTHERS CO
		CENTRAL INDEX KEY:			0000034563
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS FOOD PREPARATIONS & KINDRED PRODUCTS [2090]
		IRS NUMBER:				950725980
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		20333 S NORMANDIE AVE
		CITY:			TORRANCE
		STATE:			CA
		ZIP:			90502
		BUSINESS PHONE:		3107875200

	MAIL ADDRESS:	
		STREET 1:		20333 SOUTH NORMANDIE AVENUE
		CITY:			TORRANCE
		STATE:			CA
		ZIP:			90502

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KEOWN MICHAEL H
		CENTRAL INDEX KEY:			0001259767

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34249
		FILM NUMBER:		15601237

	MAIL ADDRESS:	
		STREET 1:		20333 S. NORMANDIE AVE.
		CITY:			TORRANCE
		STATE:			CA
		ZIP:			90502
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2015-02-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000034563</issuerCik>
        <issuerName>FARMER BROTHERS CO</issuerName>
        <issuerTradingSymbol>FARM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001259767</rptOwnerCik>
            <rptOwnerName>KEOWN MICHAEL H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>FARMER BROS. CO.,</rptOwnerStreet1>
            <rptOwnerStreet2>20333 S NORMANDIE AVE</rptOwnerStreet2>
            <rptOwnerCity>TORRANCE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90502</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President, CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>23.44</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2015-02-09</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>49902</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>23.44</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2022-02-09</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>49902</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>235372</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Grant of non-qualified stock option under the Farmer Bros. Co. Amended and Restated 2007 Long-Term Incentive Plan (&quot;Plan&quot;); the stock option vests pursuant to a three year vesting schedule, whereby one-third of the total number of shares issuable under the option becomes exercisable each year on the anniversary of the grant date, commencing on February 9, 2016, based on the Company's achievement of a modified net income target for each fiscal year of the performance period as approved by the Compensation Committee, subject to catch-up vesting of previously unvested shares in a subsequent year within the three year period in which a cumulative modified net income target as approved by the Compensation Committee is achieved and the acceleration provisions of the Plan and stock option agreement, and subject to the participant's employment by the Company or service on the Board of Directors of the Company on the applicable vesting date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Thomas Mattei, Jr. Attorney-In-Fact for Michael H. Keown</signatureName>
        <signatureDate>2015-02-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
