<SEC-DOCUMENT>0001209191-15-003530.txt : 20150109
<SEC-HEADER>0001209191-15-003530.hdr.sgml : 20150109
<ACCEPTANCE-DATETIME>20150109181324
ACCESSION NUMBER:		0001209191-15-003530
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150108
FILED AS OF DATE:		20150109
DATE AS OF CHANGE:		20150109

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			STEMCELLS INC
		CENTRAL INDEX KEY:			0000883975
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				943078125
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3155 PORTER DRIVE
		STREET 2:		.
		CITY:			PALO ALTO
		STATE:			CA
		ZIP:			94304
		BUSINESS PHONE:		6504753100

	MAIL ADDRESS:	
		STREET 1:		3155 PORTER DRIVE
		STREET 2:		.
		CITY:			PALO ALTO
		STATE:			CA
		ZIP:			94304

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CYTOTHERAPEUTICS INC/DE
		DATE OF NAME CHANGE:	19930328

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MCGLYNN MARTIN M
		CENTRAL INDEX KEY:			0001230631

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19871
		FILM NUMBER:		15520187
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2015-01-08</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000883975</issuerCik>
        <issuerName>STEMCELLS INC</issuerName>
        <issuerTradingSymbol>STEM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001230631</rptOwnerCik>
            <rptOwnerName>MCGLYNN MARTIN M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O STEMCELLS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>7707 GATEWAY BLVD, STE 140</rptOwnerStreet2>
            <rptOwnerCity>NEWARK</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94560</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2015-01-08</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1255500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2274391</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2015-01-08</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>418500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2692891</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>22921</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By 401(k) plan</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Restricted stock units, with 1/3 vesting on each of January 8, 2016, January 8, 2017, and January 8, 2018.</footnote>
        <footnote id="F2">Includes (1) 525,000 restricted stock units, with 175,000 of these vesting on each of June 14, 2015, June 14, 2016, and June 14, 2017; (2) 135,333 restricted stock units vesting on January 27, 2015, and (3) 1,255,500 restricted stock units, with 418,500 of these vesting on each of January 8, 2016, January 8, 2017 and January 8, 2018.</footnote>
        <footnote id="F3">Restricted stock units, with performance based vesting set by the issuer's Board of Directors and tied to the timely and successful conduct and completion of the issuer's Phase II clinical studies in dry AMD and spinal cord injury.</footnote>
        <footnote id="F4">Includes (1) 525,000 restricted stock units, with 175,000 of these vesting on each of June 14, 2015, June 14, 2016, and June 14, 2017; (2) 135,333 restricted stock units vesting on January 27, 2015; (3) 1,255,500 restricted stock units, with 418,500 of these vesting on each of January 8, 2016, January 8, 2017 and January 8, 2018; and (4) 418,500 restricted stock units with performance based vesting.</footnote>
        <footnote id="F5">Shares held in 401(k) account in accordance with issuer's employer-match policies.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Ken Stratton, attorney-in-fact</signatureName>
        <signatureDate>2015-01-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
