<SUBMISSION>
<ACCESSION-NUMBER>0001039765-04-000004
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20041202
<FILING-DATE>20041206
<DATE-OF-FILING-DATE-CHANGE>20041206
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>CADIZ INC
<CIK>0000727273
<ASSIGNED-SIC>0700
<IRS-NUMBER>770313235
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>777 SOUTH FIGUEROA STREET
<STREET2>SUITE 4250
<CITY>LOS ANGELES
<STATE>CA
<ZIP>90017
<PHONE>213-271-1600
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>777 SOUTH FIGUEROA STREET
<STREET2>SUITE 4250
<CITY>LOS ANGELES
<STATE>CA
<ZIP>90017
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>CADIZ LAND CO INC
<DATE-CHANGED>19920703
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>PACIFIC AGRICULTURAL HOLDINGS INC
<DATE-CHANGED>19920602
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>ARIDTECH INC
<DATE-CHANGED>19880523
</FORMER-COMPANY>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>ING GROEP NV
<CIK>0001039765
<ASSIGNED-SIC>6311
<STATE-OF-INCORPORATION>P7
<FISCAL-YEAR-END>1231
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>000-12114
<FILM-NUMBER>041187201
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>AMSTELVEENSEWEG 500, 1081 KL AMSTERDAM
<STREET2>PO BOX 810, 1000 AV
<CITY>AMSTERDAM
<STATE>P7
<ZIP>0000
<PHONE>01131205418534
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>AMSTELVEENSEWEG 500, 1081 KL AMSTERDAM
<STREET2>PO BOX 810, 1000 AV
<CITY>AMSTERDAM
<STATE>P7
<ZIP>0000
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-12-02</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000727273</issuerCik>
        <issuerName>CADIZ INC</issuerName>
        <issuerTradingSymbol>CDZI.OTCBB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001039765</rptOwnerCik>
            <rptOwnerName>ING GROEP NV</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>AMSTELVEENSEWEG 500, 1081 KL AMSTERDAM</rptOwnerStreet1>
            <rptOwnerStreet2>PO BOX 810, 1000 AV</rptOwnerStreet2>
            <rptOwnerCity>AMSTERDAM</rptOwnerCity>
            <rptOwnerState>P7</rptOwnerState>
            <rptOwnerZipCode>0000</rptOwnerZipCode>
            <rptOwnerStateDescription>NETHERLANDS</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-12-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>200000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>299474</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>(2)</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-12-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1711665</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2011139</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>(4)</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Series F Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-12-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>99000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F7"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F6"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1711665</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>(8)</value>
                    <footnoteId id="F8"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Warrants</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>15</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-12-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>40000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F11"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F9"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F10"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>40000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>40000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>(12)</value>
                    <footnoteId id="F12"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">ING Groep N.V. purchased 40,000 units for $2,400,000.  The units consist of 200,000 shares of common stock and 40,000 warrants.</footnote>
        <footnote id="F2">ING Groep N.V. is the indirect parent company of ING Capital LLC through a chain of wholly-owned subsidiaries.

Holders of a majority-in-interest of Cadiz Inc.'s Series F Preferred Stock have the right to nominate and elect two directors to the Board of Directors of Cadiz Inc. ING Capital LLC, as the sole holder of Cadiz Inc.'s Series F Preferred Stock, currently has the right to nominate and elect two directors to the Board of Directors of Cadiz Inc.  ING Capital LLC has appointed Geoffrey W. Arens and Gregory Ritchie to serve as directors of Cadiz Inc.</footnote>
        <footnote id="F3">99,000 shares of Series F Preferred Stock were converted into 1,711,665 shares of common stock.</footnote>
        <footnote id="F4">ING Groep N.V. is the indirect parent company of ING Capital LLC through a chain of wholly-owned subsidiaries.

Holders of a majority-in-interest of Cadiz Inc.'s Series F Preferred Stock have the right to nominate and elect two directors to the Board of Directors of Cadiz Inc. ING Capital LLC, as the sole holder of Cadiz Inc.'s Series F Preferred Stock, currently has the right to nominate and elect two directors to the Board of Directors of Cadiz Inc.  ING Capital LLC has appointed Geoffrey W. Arens and Gregory Ritchie to serve as directors of Cadiz Inc.</footnote>
        <footnote id="F5">Immediately.</footnote>
        <footnote id="F6">The Series F Preferred Stock does not have an expiration date and shall remain in existence until such time as it is converted into shares of common stock.</footnote>
        <footnote id="F7">99,000 shares of Series F Preferred Stock were converted into 1,711,665 shares of common stock.</footnote>
        <footnote id="F8">ING Groep N.V. is the indirect parent company of ING Capital LLC through a chain of wholly-owned subsidiaries.

Holders of a majority-in-interest of Cadiz Inc.'s Series F Preferred Stock have the right to nominate and elect two directors to the Board of Directors of Cadiz Inc. ING Capital LLC, as the sole holder of Cadiz Inc.'s Series F Preferred Stock, currently has the right to nominate and elect two directors to the Board of Directors of Cadiz Inc.  ING Capital LLC has appointed Geoffrey W. Arens and Gregory Ritchie to serve as directors of Cadiz Inc.</footnote>
        <footnote id="F9">180 days</footnote>
        <footnote id="F10">3 years</footnote>
        <footnote id="F11">ING Groep N.V. purchased 40,000 units for $2,400,000.  The units consist of 200,000 shares of common stock and 40,000 warrants.</footnote>
        <footnote id="F12">ING Groep N.V. is the indirect parent company of ING Capital LLC through a chain of wholly-owned subsidiaries.

Holders of a majority-in-interest of Cadiz Inc.'s Series F Preferred Stock have the right to nominate and elect two directors to the Board of Directors of Cadiz Inc. ING Capital LLC, as the sole holder of Cadiz Inc.'s Series F Preferred Stock, currently has the right to nominate and elect two directors to the Board of Directors of Cadiz Inc.  ING Capital LLC has appointed Geoffrey W. Arens and Gregory Ritchie to serve as directors of Cadiz Inc.</footnote>
    </footnotes>

    <remarks>Reporting Owner Name/Address:  ING Capital LLC, 1325 Avenue of the Americas, New York, NY  10019.</remarks>

    <ownerSignature>
        <signatureName>Kees Drabbe</signatureName>
        <signatureDate>2004-12-06</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
