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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 SpM2BuiKXoffcOMhrl8q5V5fYjWNTB7KeWzuJv8ZU5l3E3z//WHlUZM083W12HAj
 F6zQYDU/swr3fyjU9tDj+g==

<SEC-DOCUMENT>0001209191-03-018413.txt : 20030821
<SEC-HEADER>0001209191-03-018413.hdr.sgml : 20030821
<ACCEPTANCE-DATETIME>20030821154128
ACCESSION NUMBER:		0001209191-03-018413
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030819
FILED AS OF DATE:		20030821

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HANKS NITA B
		CENTRAL INDEX KEY:			0001202767

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-02658
		FILM NUMBER:		03860190

	MAIL ADDRESS:	
		STREET 1:		1980 POST OAK BLVD STE 800
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77056

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			STEWART INFORMATION SERVICES CORP
		CENTRAL INDEX KEY:			0000094344
		STANDARD INDUSTRIAL CLASSIFICATION:	TITLE INSURANCE [6361]
		IRS NUMBER:				741677330
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1980 POST OAK BLVD
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77056
		BUSINESS PHONE:		7136258100

	MAIL ADDRESS:	
		STREET 1:		1980 POST OAK BLVD
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77056
</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>2003-08-19</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000094344</issuerCik><issuerName>STEWART INFORMATION SERVICES CORP</issuerName>        <issuerTradingSymbol>STC</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001202767</rptOwnerCik><rptOwnerName>HANKS NITA B</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>1980 POST OAK BLVD.</rptOwnerStreet1><rptOwnerStreet2>SUITE 900</rptOwnerStreet2><rptOwnerCity>HOUSTON</rptOwnerCity><rptOwnerState>TX</rptOwnerState><rptOwnerZipCode>77056</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTran
saction><securityTitle><value>Common Stock, $1.00 par value</value><footnoteId id="F1" /></securityTitle><transactionDate><value>2003-08-19</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>1000</value></transactionShares><transactionPricePerShare><value>13</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1366</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock, $1.00 par value</value><footnoteId id="F1" /></securi
tyTitle><transactionDate><value>2003-08-19</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>1200</value></transactionShares><transactionPricePerShare><value>16.97</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>2566</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock, $1.00 par value</value><footnoteId id="F1" /></securityTitle><transactionDate><value>2003-08-19</value></transactionDate><transactionCoding><transa
ctionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>1200</value></transactionShares><transactionPricePerShare><value>18.74</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>3766</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock, $1.00 par value</value><footnoteId id="F1" /></securityTitle><transactionDate><value>2003-08-19</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0
</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>3400</value></transactionShares><transactionPricePerShare><value>29</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>366</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>Employee Stock Options</value></securityTitle><conversionOrExercisePrice><value>13</value></conversionOrExercisePrice><transactionDate><value>2003-08-19</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved
></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>1000</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2000-01-31</value></exerciseDate><expirationDate><value>2010-01-31</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value><footnoteId id="F1" /></underlyingSecurityTitle><underlyingSecurityShares><value>1000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>3600</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Employee Stock Options</value></securityTitle><convers
ionOrExercisePrice><value>16.97</value></conversionOrExercisePrice><transactionDate><value>2003-08-19</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>1200</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2001-05-23</value></exerciseDate><expirationDate><value>2011-05-23</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value><footnoteId id="F1" /></underlyingSecurityTitle><underlyingSecurityShares><value>1200</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>2400</value></sharesOwnedFollowin
gTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Employee Stock Options</value></securityTitle><conversionOrExercisePrice><value>18.74</value></conversionOrExercisePrice><transactionDate><value>2003-08-19</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>1200</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2002-05-22</value></exerciseDate><expirationDate><value>2012-05-22</value></expirationDate><underlyingSecurity><underlyingSecurityTitl
e><value>Common Stock</value><footnoteId id="F1" /></underlyingSecurityTitle><underlyingSecurityShares><value>1200</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1200</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">On March 15, 1999, the Issuer declared a one-for-one stock dividend on its Common Stock and its Class B Common Stock. The amounts reported reflect the effect of such dividend.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>By John Watson, as Attorney-in-Fact for the Reporting Person</signatureName><signatureDate>2003-08-21</signatureDate></ownerSignature></ownershipDocument>

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</DOCUMENT>
</SEC-DOCUMENT>
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