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

    <schemaVersion>X0303</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2009-05-21</periodOfReport>

    <dateOfOriginalSubmission>2009-04-02</dateOfOriginalSubmission>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001011509</issuerCik>
        <issuerName>Golden Minerals Co</issuerName>
        <issuerTradingSymbol>GDMN.PK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001278736</rptOwnerCik>
            <rptOwnerName>POLYGON GLOBAL OPPORTUNITIES MASTER FUND</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O POLYGON INVESTMENT PARTNERS LLP</rptOwnerStreet1>
            <rptOwnerStreet2>4 SLOANE TERRACE</rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>SW1X 9DQ</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001308098</rptOwnerCik>
            <rptOwnerName>Polygon Investments Ltd.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O POLYGON INVESTMENT PARTNERS LLP</rptOwnerStreet1>
            <rptOwnerStreet2>4 SLOANE TERRACE</rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>SW1X 9DQ</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001400002</rptOwnerCik>
            <rptOwnerName>Polygon Investment Management LTD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O POLYGON INVESTMENT PARTNERS LLP</rptOwnerStreet1>
            <rptOwnerStreet2>4 SLOANE TERRACE</rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>SW1X 9DQ</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001308513</rptOwnerCik>
            <rptOwnerName>Polygon Investment Partners LLP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O POLYGON INVESTMENT PARTNERS LLP</rptOwnerStreet1>
            <rptOwnerStreet2>4 SLOANE TERRACE</rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>SW1X 9DQ</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001308514</rptOwnerCik>
            <rptOwnerName>Polygon Investment Partners LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O POLYGON INVESTMENT PARTNERS LLP</rptOwnerStreet1>
            <rptOwnerStreet2>4 SLOANE TERRACE</rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>SW1X 9DQ</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001388444</rptOwnerCik>
            <rptOwnerName>Polygon Investment Partners HK LTD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O POLYGON INVESTMENT PARTNERS LLP</rptOwnerStreet1>
            <rptOwnerStreet2>4 SLOANE TERRACE</rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>SW1X 9DQ</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001400001</rptOwnerCik>
            <rptOwnerName>Polygon Investment Partners GP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O POLYGON INVESTMENT PARTNERS LLP</rptOwnerStreet1>
            <rptOwnerStreet2>4 SLOANE TERRACE</rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>SW1X 9DQ</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001399998</rptOwnerCik>
            <rptOwnerName>Reade E. Griffith</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O POLYGON INVESTMENT PARTNERS LLP</rptOwnerStreet1>
            <rptOwnerStreet2>4 SLOANE TERRACE</rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>SW1X 9DQ</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001399996</rptOwnerCik>
            <rptOwnerName>Patrick G. G. Dear</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O POLYGON INVESTMENT PARTNERS LLP</rptOwnerStreet1>
            <rptOwnerStreet2>4 SLOANE TERRACE</rptOwnerStreet2>
            <rptOwnerCity>LONDON</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>SW1X 9DQ</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</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>2009-05-21</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>300000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.75</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>207009</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <remarks>This Form 4 is filed on behalf of Polygon Global Opportunities Master Fund, Polygon Investments Ltd., Polygon Investment Management Limited, Polygon Investment Partners LLP, Polygon Investment Partners LP, Polygon Investment Partners HK Limited, Polygon Investment Partners GP, LLC, Mr. Reade E. Griffith and Mr. Patrick G. G. Dear.</remarks>

    <ownerSignature>
        <signatureName>POLYGON GLOBAL OPPORTUNITIES MASTER FUND; By: Polygon Investment Partners LLP, its investment manager; By: /s/ Patrick G. G. Dear, Principal</signatureName>
        <signatureDate>2009-05-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>POLYGON INVESTMENTS LTD.; By: /s/ Patrick G. G. Dear, Principal</signatureName>
        <signatureDate>2009-05-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>POLYGON INVESTMENT MANAGEMENT LIMITED; By: /s/ Patrick G. G. Dear, Principal</signatureName>
        <signatureDate>2009-05-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>POLYGON INVESTMENT PARTNERS LLP; By: /s/ Patrick G. G. Dear, Principal</signatureName>
        <signatureDate>2009-05-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>POLYGON INVESTMENT PARTNERS HK LIMITED; By: Patrick G. G. Dear, Principal</signatureName>
        <signatureDate>2009-05-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>POLYGON INVESTMENTS PARTNERS GP, LLC; By: /s/ Patrick G. G. Dear, Principal</signatureName>
        <signatureDate>2009-05-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Reade E. Griffith</signatureName>
        <signatureDate>2009-05-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Patrick G. G. Dear</signatureName>
        <signatureDate>2009-05-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
