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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2014-12-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001236181</rptOwnerCik>
            <rptOwnerName>BARTON FRANCIS P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1></rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity></rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Non-qualified stock option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>4.66</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2014-12-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2014-12-15</value>
            </exerciseDate>
            <expirationDate>
                <value>2019-12-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>8000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Grant of nonstatutory stock option under the Issuer's Amended and Restated 2007 Stock Plan to purchase 8,000 shares of the Company's common stock (&quot;Option Shares&quot;) at an exercise price of $4.66 per share, with 4,000 of the Option Shares vesting immediately, and the remaining 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 Issuer.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Francis Barton by Todd Waltz, attorney-in-fact</signatureName>
        <signatureDate>2014-12-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2014-12-15
0
0000738214
AEMETIS, INC
AMTX
0001236181
BARTON FRANCIS P
1
0
0
0
Non-qualified stock option (right to buy)
4.66
2014-12-15
4
A
0
8000
0
A
2014-12-15
2019-12-15
Common Stock
8000
8000
D
Grant of nonstatutory stock option under the Issuer's Amended and Restated 2007 Stock Plan to purchase 8,000 shares of the Company's common stock ("Option Shares") at an exercise price of $4.66 per share, with 4,000 of the Option Shares vesting immediately, and the remaining 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 Issuer.
/s/ Francis Barton by Todd Waltz, attorney-in-fact
2014-12-16