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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 Afuhhf/gFfozCtxg9idF+HdHqKoL3lgCzVYCODzqlNtW2Flg/1tnC55fqZD4XnZJ
 ziU1Nb1aWTyGGEp8Du6ZTA==

<SEC-DOCUMENT>0001209191-03-019978.txt : 20030903
<SEC-HEADER>0001209191-03-019978.hdr.sgml : 20030903
<ACCEPTANCE-DATETIME>20030903160254
ACCESSION NUMBER:		0001209191-03-019978
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030829
FILED AS OF DATE:		20030903

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PANERA BREAD CO
		CENTRAL INDEX KEY:			0000724606
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-EATING PLACES [5812]
		IRS NUMBER:				042723701
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1226

	BUSINESS ADDRESS:	
		STREET 1:		19 FID KENNEDY AVE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02210
		BUSINESS PHONE:		6174232100

	MAIL ADDRESS:	
		STREET 1:		19 FID KENNEDY AVE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02210

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AU BON PAIN CO INC
		DATE OF NAME CHANGE:	19940201

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AU BON PAIN COMPANY INC
		DATE OF NAME CHANGE:	19920501

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SHAICH RONALD M
		CENTRAL INDEX KEY:			0001034193

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-19253
		FILM NUMBER:		03879260

	BUSINESS ADDRESS:	
		STREET 1:		6710 CLAYTON ROAD
		CITY:			RICHMOND HEIGHTS
		STATE:			MO
		ZIP:			63117
		BUSINESS PHONE:		3146337150

	MAIL ADDRESS:	
		STREET 1:		C/O AU BON PAIN CO INC
		STREET 2:		19 FID KENNEDY AVE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02210

	FORMER NAME:	
		FORMER CONFORMED NAME:	SCHAICH RONALD M
		DATE OF NAME CHANGE:	19970219
</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>2003-08-29</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000724606</issuerCik><issuerName>PANERA BREAD CO</issuerName>        <issuerTradingSymbol>PNRA</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001034193</rptOwnerCik><rptOwnerName>SHAICH RONALD M</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>6710 CLAYTON ROAD</rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>RICHMOND HEIGHTS</rptOwnerCity><rptOwnerState>MO</rptOwnerState><rptOwnerZipCode>63117</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>1</isTenPercentOwner><isOther>0</isOther><officerTitle>Chairman &amp; CEO</officerTitle></reportingOwnerRelationship></reportingOwner><nonDer
ivativeTable><nonDerivativeTransaction><securityTitle><value>Class B Common Stock</value></securityTitle><transactionDate><value>2003-08-22</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>5</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F1" /></transactionCoding><transactionTimeliness><value>E</value></transactionTimeliness><transactionAmounts><transactionShares><value>13783</value></transactionShares><transactionPricePerShare><value>42.7</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>29809</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>By children's GRAT</value></natureOfOwnership></ownershipNature>
</nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Class A Common Stock</value></securityTitle><transactionDate><value>2003-08-29</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>7000</value></transactionShares><transactionPricePerShare><value>44</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>372000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Class A 
Common Stock</value></securityTitle><transactionDate><value>2003-09-02</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>35000</value></transactionShares><transactionPricePerShare><value>45.01</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>337000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Class A Common Stock</value></securityTitle><transactionDate><value>2003-09-02</value><
/transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>7000</value></transactionShares><transactionPricePerShare><value>45.05</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>330000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeHolding><securityTitle><value>Class B Common Stock</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1735872</value><footnoteId id="F2" /></sharesOwnedFollowingTran
saction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><footnotes><footnote id="F1">Shares distributed by grantor retained annuity trust to reporting person on 8/22/03 to satisfy trust's annuity payment obligation; distribution exempt under Rule 16a-13.</footnote><footnote id="F2">Includes 13,783 shares previously reported as indirectly beneficially owned by a grantor retained annuity trust, distributed from that trust to reporting person.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>/s/ Ronald M. Shaich</signatureName><signatureDate>2003-09-03</signatureDate></ownerSignature></ownershipDocument>

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