<SEC-DOCUMENT>0001596771-17-000033.txt : 20170420
<SEC-HEADER>0001596771-17-000033.hdr.sgml : 20170420
<ACCEPTANCE-DATETIME>20170420162400
ACCESSION NUMBER:		0001596771-17-000033
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170419
FILED AS OF DATE:		20170420
DATE AS OF CHANGE:		20170420

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Sunshine Heart, Inc.
		CENTRAL INDEX KEY:			0001506492
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
		IRS NUMBER:				680533453
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		12988 VALLEY VIEW ROAD
		CITY:			EDEN PRAIRIE
		STATE:			MN
		ZIP:			55344
		BUSINESS PHONE:		952-345-4200

	MAIL ADDRESS:	
		STREET 1:		12988 VALLEY VIEW ROAD
		CITY:			EDEN PRAIRIE
		STATE:			MN
		ZIP:			55344

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ERB JOHN L
		CENTRAL INDEX KEY:			0001213867

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35312
		FILM NUMBER:		17773268

	MAIL ADDRESS:	
		STREET 1:		C/O VASCULAR SOLUTIONS, INC.
		STREET 2:		6464 SYCAMORE COURT N.
		CITY:			MINNEAPOLIS,
		STATE:			MN
		ZIP:			55369
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-04-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001506492</issuerCik>
        <issuerName>Sunshine Heart, Inc.</issuerName>
        <issuerTradingSymbol>SSH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001213867</rptOwnerCik>
            <rptOwnerName>ERB JOHN L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>12988 VALLEY VIEW ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>EDEN PRAIRIE</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55344</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CEO and President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-04-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>100000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>115468</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Warrant to Purchase Common Stock (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.1</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2017-04-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>100000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2017-04-24</value>
            </exerciseDate>
            <expirationDate>
                <value>2022-04-24</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>100000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>100000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The reporting person purchased Class A Units (&quot;Units&quot;) consisting of one share of common stock and one warrant to purchase one share of common stock for $1.00 per Unit in an underwritten public offering by the issuer.  The shares of common stock and warrants comprising the Units were issued separately.  The offering is expected to close on April 24, 2017.</footnote>
        <footnote id="F2">On January 12, 2017, the issuer effected a 1-for-30 reverse stock split of the issued and outstanding shares of its common stock.  Upon effectiveness of the reverse stock split, every 30 shares of common stock was automatically converted into one share of common stock, resulting in a decrease of the insider's common stock holdings of 448,660 shares.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Gayle C. Aiken, by Power of Attorney</signatureName>
        <signatureDate>2017-04-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
