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<?xml version="1.0" encoding="windows-1252"?> |
<ownershipDocument> |
| <schemaVersion> X0306 </schemaVersion> |
| <documentType> 4 </documentType> |
| <periodOfReport> 2020-05-21 </periodOfReport> |
| <notSubjectToSection16> 0 </notSubjectToSection16> |
| <issuer> |
| | <issuerCik> 0001742089 </issuerCik> |
| | <issuerName> CBM BANCORP, INC. </issuerName> |
| | <issuerTradingSymbol> CBMB </issuerTradingSymbol> |
| | </issuer> |
| <reportingOwner> |
| | <reportingOwnerId> |
| | | <rptOwnerCik> 0001492887 </rptOwnerCik> |
| | | <rptOwnerName> Beal Jodi Lynn </rptOwnerName> |
| | | </reportingOwnerId> |
| | <reportingOwnerAddress> |
| | | <rptOwnerStreet1> 2001 EAST JOPPA ROAD </rptOwnerStreet1> |
| | | <rptOwnerStreet2></rptOwnerStreet2> |
| | | <rptOwnerCity> BALTIMORE </rptOwnerCity> |
| | | <rptOwnerState> MD </rptOwnerState> |
| | | <rptOwnerZipCode> 21234 </rptOwnerZipCode> |
| | | <rptOwnerStateDescription></rptOwnerStateDescription> |
| | | </reportingOwnerAddress> |
| | <reportingOwnerRelationship> |
| | | <isDirector> 0 </isDirector> |
| | | <isOfficer> 1 </isOfficer> |
| | | <isTenPercentOwner> 0 </isTenPercentOwner> |
| | | <isOther> 0 </isOther> |
| | | <officerTitle> EVP/CFO </officerTitle> |
| | | </reportingOwnerRelationship> |
| | </reportingOwner> |
| <nonDerivativeTable> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> COMMON STOCK </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 16000 </value> |
| <footnoteId id="F1"/> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> I </value> |
| </directOrIndirectOwnership> |
| <natureOfOwnership> |
| <value> BY 2019 EQUITY INCENTIVE PLAN </value> |
| </natureOfOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> COMMON STOCK </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 4000 </value> |
| <footnoteId id="F2"/> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> COMMON STOCK </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 17500 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> I </value> |
| </directOrIndirectOwnership> |
| <natureOfOwnership> |
| <value> BY IRA </value> |
| </natureOfOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | <nonDerivativeHolding> |
| | | <securityTitle> |
| <value> COMMON STOCK </value> |
| </securityTitle> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 3688 </value> |
| <footnoteId id="F3"/> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> I </value> |
| </directOrIndirectOwnership> |
| <natureOfOwnership> |
| <value> BY ESOP </value> |
| </natureOfOwnership> |
| </ownershipNature> |
| | | </nonDerivativeHolding> |
| | </nonDerivativeTable> |
| <derivativeTable> |
| | <derivativeHolding> |
| | | <securityTitle> |
| <value> STOCK OPTIONS </value> |
| </securityTitle> |
| | | <conversionOrExercisePrice> |
| <value> 13.40 </value> |
| </conversionOrExercisePrice> |
| | | <exerciseDate> |
| <value> 2020-05-14 </value> |
| </exerciseDate> |
| | | <expirationDate> |
| <value> 2029-05-14 </value> |
| </expirationDate> |
| | | <underlyingSecurity> |
| <underlyingSecurityTitle> |
| <value> COMMON STOCK </value> |
| </underlyingSecurityTitle> |
| <underlyingSecurityShares> |
| <value> 32500 </value> |
| <footnoteId id="F4"/> |
| </underlyingSecurityShares> |
| </underlyingSecurity> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 32500 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </derivativeHolding> |
| | <derivativeTransaction> |
| | | <securityTitle> |
| <value> STOCK OPTIONS </value> |
| </securityTitle> |
| | | <conversionOrExercisePrice> |
| <value> 11.90 </value> |
| </conversionOrExercisePrice> |
| | | <transactionDate> |
| <value> 2020-05-21 </value> |
| </transactionDate> |
| | | <deemedExecutionDate></deemedExecutionDate> |
| | | <transactionCoding> |
| <transactionFormType> 4 </transactionFormType> |
| <transactionCode> A </transactionCode> |
| <equitySwapInvolved> 0 </equitySwapInvolved> |
| </transactionCoding> |
| | | <transactionTimeliness> |
| <value></value> |
| </transactionTimeliness> |
| | | <transactionAmounts> |
| <transactionShares> |
| <value> 6000 </value> |
| </transactionShares> |
| <transactionPricePerShare> |
| <value> 0.00 </value> |
| </transactionPricePerShare> |
| <transactionAcquiredDisposedCode> |
| <value> A </value> |
| </transactionAcquiredDisposedCode> |
| </transactionAmounts> |
| | | <exerciseDate> |
| <value> 2023-05-21 </value> |
| </exerciseDate> |
| | | <expirationDate> |
| <value> 2030-05-21 </value> |
| </expirationDate> |
| | | <underlyingSecurity> |
| <underlyingSecurityTitle> |
| <value> COMMON STOCK </value> |
| </underlyingSecurityTitle> |
| <underlyingSecurityShares> |
| <value> 6000 </value> |
| <footnoteId id="F5"/> |
| </underlyingSecurityShares> |
| </underlyingSecurity> |
| | | <postTransactionAmounts> |
| <sharesOwnedFollowingTransaction> |
| <value> 6000 </value> |
| </sharesOwnedFollowingTransaction> |
| </postTransactionAmounts> |
| | | <ownershipNature> |
| <directOrIndirectOwnership> |
| <value> D </value> |
| </directOrIndirectOwnership> |
| </ownershipNature> |
| | | </derivativeTransaction> |
| | </derivativeTable> |
| <footnotes> |
| | <footnote id="F1"> Grant of restricted stock awards via Issuer's 2019 Equity Incentive Plan will vest equally over a 5-year period commencing on the first anniversary date of the grant. </footnote> |
| | <footnote id="F2"> Vesting of restricted stock awards via Issuer's 2019 Equity Incentive Plan. </footnote> |
| | <footnote id="F3"> Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934, as amended. </footnote> |
| | <footnote id="F4"> Stock Options awarded via Issuer's 2019 Equity Incentive Plan will vest equally over a 5-year period commencing on the first anniversary of the date of the grant. </footnote> |
| | <footnote id="F5"> Stock Options awarded via Issuer's 2019 Equity Incentive Plan. Will vest based on the anniversary date of the grant at a rate of 60% in 2023, 20% in 2024 and 20% in 2025 </footnote> |
| | </footnotes> |
| <remarks></remarks> |
| <ownerSignature> |
| | <signatureName> /s/Jodi L. Beal </signatureName> |
| | <signatureDate> 2020-05-22 </signatureDate> |
| | </ownerSignature> |
| </ownershipDocument> |