<?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>0001383895</rptOwnerCik>
            <rptOwnerName>Waltz Todd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>P O BOX 1445</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CUPERTINO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95015</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP and CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Incentive 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>10000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>46600</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2015-03-15</value>
            </exerciseDate>
            <expirationDate>
                <value>2019-12-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10000</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 10,000 shares of the Company's common stock (&quot;Option Shares&quot;) at an exercise price of $4.66 per 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>/s/ Todd Waltz</signatureName>
        <signatureDate>2014-12-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2014-12-15
0
0000738214
AEMETIS, INC
AMTX
0001383895
Waltz Todd
P O BOX 1445
CUPERTINO
CA
95015
0
1
0
0
EVP and CFO
Incentive Stock Option (right to buy)
4.66
2014-12-15
4
A
0
10000
46600
A
2015-03-15
2019-12-15
Common Stock
10000
10000
D
Grant of nonstatutory stock option under the Aemetis, Inc. Amended and Restated 2007 Stock Plan to purchase 10,000 shares of the Company's common stock ("Option Shares") at an exercise price of $4.66 per 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.
/s/ Todd Waltz
2014-12-16