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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2014-03-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001420115</rptOwnerCik>
            <rptOwnerName>Sorgenti Harold</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1735 MARKET STREET SUITE 3930</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PHILADELPHIA</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19103</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Nonstatutory stock option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.42</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2014-03-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>125000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2014-06-13</value>
            </exerciseDate>
            <expirationDate>
                <value>2019-03-13</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>125000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1075000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Grant of nonstatutory stock option under the Aemetis, Inc. Amended and Restated 2007 Stock Plan to purchase 100,000 shares of the Company's common stock (&quot;Option Shares&quot;), with 1/12th of the Option Shares, at an exercise price of $0.42/share, vesting every three (3) months from date of grant, and subject to the terms of the Stock Option Agreement between Reporting Person and the Company.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Harold Sorgenti by Todd Waltz, Attorney-in-fact</signatureName>
        <signatureDate>2014-03-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2014-03-13
0
0000738214
AEMETIS, INC
AMTX
0001420115
Sorgenti Harold
1735 MARKET STREET SUITE 3930
PHILADELPHIA
PA
19103
1
0
0
0
Nonstatutory stock option (Right to Buy)
0.42
2014-03-13
4
A
0
125000
A
2014-06-13
2019-03-13
Common Stock
125000
1075000
D
Grant of nonstatutory stock option under the Aemetis, Inc. Amended and Restated 2007 Stock Plan to purchase 100,000 shares of the Company's common stock ("Option Shares"), with 1/12th of the Option Shares, at an exercise price of $0.42/share, vesting every three (3) months from date of grant, and subject to the terms of the Stock Option Agreement between Reporting Person and the Company.
Harold Sorgenti by Todd Waltz, Attorney-in-fact
2014-03-13