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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 IXOyM/RY2JjA6UlgBCTwTWsGtBnC019EmibPX9rDE4Z2gTNHsjYihUqlh47WCliQ
 JS445QucTLdEeLVBnHU3GA==

<SEC-DOCUMENT>0001209191-03-023654.txt : 20031001
<SEC-HEADER>0001209191-03-023654.hdr.sgml : 20031001
<ACCEPTANCE-DATETIME>20031001121505
ACCESSION NUMBER:		0001209191-03-023654
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030930
FILED AS OF DATE:		20031001

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SCHWARTZ JOHN J
		CENTRAL INDEX KEY:			0001230629

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19871
		FILM NUMBER:		03919665

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

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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-09-30</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000883975</issuerCik><issuerName>STEMCELLS INC</issuerName>        <issuerTradingSymbol>stem</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001230629</rptOwnerCik><rptOwnerName>SCHWARTZ JOHN J</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>C/O STEMCELLS, INC.</rptOwnerStreet1><rptOwnerStreet2>3155 PORTER DRIVE</rptOwnerStreet2><rptOwnerCity>PALO ALTO</rptOwnerCity><rptOwnerState>CA</rptOwnerState><rptOwnerZipCode>94304</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><derivativeTable><derivativeTransaction><sec
urityTitle><value>Stock Option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>0.25</value></conversionOrExercisePrice><transactionDate><value>2003-09-30</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F1" /></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>6699</value></transactionShares><transactionPricePerShare><value>0</value><footnoteId id="F1" /></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-09-30</value></exerciseDate><expirationDate><value>2013-09-30</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>6699</value></un
derlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>6699</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Compensation for service on the Board of Directors and for attendance at Board meetings.  Non-employee directors receive compensation in the form of options to purchase shares of the Company's common stock at below market prices ($0.25 per share), in lieu of cash payments of $4,500 quarterly ($8,750 quarterly for service as Chairman of the Board), $1,500 per meeting attended in person or videoconference, and $500 for a meeting attended by telephone.  The number of shares is calculated using the closing price of the Company's common stock for the date of a Board or Committee meeting or, with respect to the quarterly retainer payments, the closing price for the
 last business day of the quarter, less the option price of $0.25 per share.  Options so issued vest immediately.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>John J. Schwartz by Iris Brest, Attorney-in-Fact</signatureName><signatureDate>2003-10-01</signatureDate></ownerSignature></ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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