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| <?xml version="1.0" encoding="windows-1252"?> |
| <ownershipDocument> |
| <schemaVersion> X0508 </schemaVersion> |
| <documentType> 4/A </documentType> |
| <periodOfReport> 2024-02-12 </periodOfReport> |
| <dateOfOriginalSubmission> 2024-02-13 </dateOfOriginalSubmission> |
| <notSubjectToSection16> 0 </notSubjectToSection16> |
| <issuer> |
| | <issuerCik> 0000034563 </issuerCik> |
| | <issuerName> FARMER BROTHERS CO </issuerName> |
| | <issuerTradingSymbol> FARM </issuerTradingSymbol> |
| | </issuer> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0000034563 </rptOwnerCik> |
| | | <rptOwnerName> FARMER BROTHERS CO </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> 1912 FARMER BROTHERS DRIVE </rptOwnerStreet1> |
| | | <rptOwnerStreet2></rptOwnerStreet2> |
| | | <rptOwnerCity> NORTHLAKE </rptOwnerCity> |
| | | <rptOwnerState> TX </rptOwnerState> |
| | | <rptOwnerZipCode> 76262 </rptOwnerZipCode> |
| | | <rptOwnerStateDescription></rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> 0 </isDirector> |
| | | <isOfficer> 0 </isOfficer> |
| | | <isTenPercentOwner> 0 </isTenPercentOwner> |
| | | <isOther> 1 </isOther> |
| | | <otherText> Issuer </otherText> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <aff10b5One> 0 </aff10b5One> |
| <nonDerivativeTable> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> Common Stock </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 0 </value> |
| <footnoteId id="F1"/> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | </nonDerivativeTable> |
| <derivativeTable></derivativeTable> |
| <footnotes> |
| | <footnote id="F1"> A Form 4 associated with Accession Number 0001628280-24-004530 filed on February 13, 2024 (the "February Form 4") was erroneously filed and this amendment seeks to reverse the error. The February Form 4 reflects a February 12, 2024 grant of restricted stock, but instead of correctly reporting the identity of the Reporting Person, the February Form 4 erroneously reflects Farmer Brothers Co. (the issuer) as the recipient of the grant. A Form 4 for the actual grantee was promptly and timely filed thereafter. </footnote> |
| | </footnotes> |
| <remarks></remarks> |
| <ownerSignature> |
| | <signatureName> /s/ Jared Vitemb, General Counsel </signatureName> |
| | <signatureDate> 2024-03-15 </signatureDate> |
| | </ownerSignature> |
| </ownershipDocument> |
