<?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>0001526099</rptOwnerCik>
            <rptOwnerName>Hutcheson Steven W.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>20400 STEVENS CREEK BLVD.,</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 700</rptOwnerStreet2>
            <rptOwnerCity>CUPERTINO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95014</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>100000</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>100000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2620070</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;), at an exercise price of $0.42/share, with 1/12th of the Option Shares 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>Steven Hutcheson 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
0001526099
Hutcheson Steven W.
20400 STEVENS CREEK BLVD.,
SUITE 700
CUPERTINO
CA
95014
1
0
0
0
Nonstatutory stock option (Right to Buy)
0.42
2014-03-13
4
A
0
100000
A
2014-06-13
2019-03-13
Common Stock
100000
2620070
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"), at an exercise price of $0.42/share, with 1/12th of the Option Shares 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.
Steven Hutcheson by Todd Waltz, Attorney-in-fact
2014-03-13