<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2013-10-04</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000738214</issuerCik>
        <issuerName>AEMETIS, INC</issuerName>
        <issuerTradingSymbol>AMTX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001134889</rptOwnerCik>
            <rptOwnerName>MCAFEE ERIC A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>20400 STEVENS CREEK BLVD., SUITE 700</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CUPERTINO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95014</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman/CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2013-10-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>500000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.3</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>34015473</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>by McAfee Capital LLC</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Shares were sold by Reporting Person in a private transaction at $0.30 per share.</footnote>
        <footnote id="F2">McAfee Capital LLC is an entity 100% owned and controlled by Reporting Person.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Eric A. McAfee</signatureName>
        <signatureDate>2013-10-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2013-10-04
0
0000738214
AEMETIS, INC
AMTX
0001134889
MCAFEE ERIC A
20400 STEVENS CREEK BLVD., SUITE 700
CUPERTINO
CA
95014
1
1
1
0
Chairman/CEO
Common Stock
2013-10-04
4
S
0
500000
0.3
D
34015473
I
by McAfee Capital LLC
Shares were sold by Reporting Person in a private transaction at $0.30 per share.
McAfee Capital LLC is an entity 100% owned and controlled by Reporting Person.
/s/ Eric A. McAfee
2013-10-08