-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 LpdR1s5f9idl3Wq3tqTby4eU7pd+4O/x6GSl3x4Qrm+9KjBDKPhIBFAbe7sgFzPv
 /38owHjo4/wJbEKSD1bMcQ==

<SEC-DOCUMENT>0001179110-03-008777.txt : 20031015
<SEC-HEADER>0001179110-03-008777.hdr.sgml : 20031013
<ACCEPTANCE-DATETIME>20031015120352
ACCESSION NUMBER:		0001179110-03-008777
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031013
FILED AS OF DATE:		20031015

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KAISER LORI C
		CENTRAL INDEX KEY:			0001169579

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26820
		FILM NUMBER:		03941157

	BUSINESS ADDRESS:	
		STREET 1:		411 FIRST AVE. SOUTH
		STREET 2:		SUITE 600
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98104-2860

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CRAY INC
		CENTRAL INDEX KEY:			0000949158
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC COMPUTERS [3571]
		IRS NUMBER:				930962605
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		411 FIRST AVE SOUTH
		STREET 2:		SUITE 600
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98104-2860
		BUSINESS PHONE:		2067012000

	MAIL ADDRESS:	
		STREET 1:		411 FIRST AVE SOUTH
		STREET 2:		SUITE 600
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98104-2860

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TERA COMPUTER CO \WA\
		DATE OF NAME CHANGE:	19950809
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
<periodOfReport>2003-10-13</periodOfReport>
<notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000949158</issuerCik>
        <issuerName>CRAY INC</issuerName>
        <issuerTradingSymbol>CRAY</issuerTradingSymbol>
</issuer>
<reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001169579</rptOwnerCik>
            <rptOwnerName>KAISER LORI C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>411 FIRST AVENUE SOUTH</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 600</rptOwnerStreet2>
            <rptOwnerCity>SEATTLE</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98104-2860</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector>
<isOfficer>1</isOfficer>
<isTenPercentOwner>0</isTenPercentOwner>
<isOther>0</isOther>
<officerTitle>VICE PRESIDENT</officerTitle>
<otherText></otherText>
</reportingOwnerRelationship>
</reportingOwner>
<nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock</value>
<footnoteId id="F1"></footnoteId>
</securityTitle>
<transactionDate><value>2003-10-13</value>
</transactionDate>
<transactionCoding><transactionFormType>4</transactionFormType>
<transactionCode>M</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionAmounts><transactionShares><value>2000</value>
</transactionShares>
<transactionPricePerShare><value>0</value>
<footnoteId id="F2"></footnoteId>
</transactionPricePerShare>
<transactionAcquiredDisposedCode><value>A</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts><sharesOwnedFollowingTransaction><value>2904</value>
<footnoteId id="F3"></footnoteId>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature><directOrIndirectOwnership><value>D</value>
</directOrIndirectOwnership>
</ownershipNature>
</nonDerivativeTransaction>
<nonDerivativeTransaction><securityTitle><value>Common Stock</value>
<footnoteId id="F1"></footnoteId>
</securityTitle>
<transactionDate><value>2003-10-13</value>
</transactionDate>
<transactionCoding><transactionFormType>4</transactionFormType>
<transactionCode>S</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionAmounts><transactionShares><value>1700</value>
</transactionShares>
<transactionPricePerShare><value>13.27</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode><value>D</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts><sharesOwnedFollowingTransaction><value>1204</value>
<footnoteId id="F3"></footnoteId>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature><directOrIndirectOwnership><value>D</value>
</directOrIndirectOwnership>
</ownershipNature>
</nonDerivativeTransaction>
<nonDerivativeTransaction><securityTitle><value>Common Stock</value>
<footnoteId id="F1"></footnoteId>
</securityTitle>
<transactionDate><value>2003-10-13</value>
</transactionDate>
<transactionCoding><transactionFormType>4</transactionFormType>
<transactionCode>S</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionAmounts><transactionShares><value>300</value>
</transactionShares>
<transactionPricePerShare><value>13.28</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode><value>D</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts><sharesOwnedFollowingTransaction><value>904</value>
<footnoteId id="F3"></footnoteId>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature><directOrIndirectOwnership><value>D</value>
</directOrIndirectOwnership>
</ownershipNature>
</nonDerivativeTransaction>
</nonDerivativeTable>
<derivativeTable><derivativeTransaction><securityTitle><value>Employee Options</value>
<footnoteId id="F1"></footnoteId>
</securityTitle>
<conversionOrExercisePrice><value>3.95</value>
</conversionOrExercisePrice>
<transactionDate><value>2003-10-13</value>
</transactionDate>
<transactionCoding><transactionFormType>4</transactionFormType>
<transactionCode>M</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionAmounts><transactionShares><value>2000</value>
</transactionShares>
<transactionPricePerShare><value>0</value>
<footnoteId id="F2"></footnoteId>
</transactionPricePerShare>
<transactionAcquiredDisposedCode><value>D</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<exerciseDate><value>2003-08-26</value>
</exerciseDate>
<expirationDate><value>2012-08-26</value>
</expirationDate>
<underlyingSecurity><underlyingSecurityTitle><value>Common</value>
</underlyingSecurityTitle>
<underlyingSecurityShares><value>2000</value>
</underlyingSecurityShares>
</underlyingSecurity>
<postTransactionAmounts><sharesOwnedFollowingTransaction><value>93064</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature><directOrIndirectOwnership><value>D</value>
</directOrIndirectOwnership>
</ownershipNature>
</derivativeTransaction>
</derivativeTable>
<footnotes><footnote id="F1">This transaction is pursuant to a previously executed Rule 10b5-1 Plan.</footnote>
<footnote id="F2">Exercise of a nonqualified stock option.</footnote>
<footnote id="F3">Includes an aggregate of 680 shares of common stock purchased by the reporting person under the Issuer's Employee Stock Purchase Plan.</footnote>
</footnotes>
<ownerSignature><signatureName>LORI C KAISER BY KENNETH W JOHNSON, ATTORNEY-IN-FACT</signatureName>
<signatureDate>2003-10-13</signatureDate>
</ownerSignature>
</ownershipDocument>

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