-----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,
 H9l64SdHTJ3FAK52gmv7TPnsD3DptCfHQk4UvR9JDazhrNjLf7IZdNB7N383EsbW
 n8sQY5CMECx0GtNJFsNY+Q==

<SEC-DOCUMENT>0001179110-03-007940.txt : 20030925
<SEC-HEADER>0001179110-03-007940.hdr.sgml : 20030925
<ACCEPTANCE-DATETIME>20030925202701
ACCESSION NUMBER:		0001179110-03-007940
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030822
FILED AS OF DATE:		20030925

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LINOS MICHAEL F
		CENTRAL INDEX KEY:			0001258250

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10013
		FILM NUMBER:		03911007

	BUSINESS ADDRESS:	
		STREET 1:		1 JENNER
		STREET 2:		STE 100
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92618
		BUSINESS PHONE:		9497432000

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VITALSTREAM HOLDINGS INC
		CENTRAL INDEX KEY:			0000789851
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		IRS NUMBER:				870429944
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE JENNER
		STREET 2:		SUITE 100
		CITY:			IRIVINE
		STATE:			CA
		ZIP:			92618
		BUSINESS PHONE:		(949) 743-2000

	MAIL ADDRESS:	
		STREET 1:		ONE JENNER
		STREET 2:		SUITE 100
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92618

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SENSAR CORP /NV/
		DATE OF NAME CHANGE:	19990501

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LARSON DAVIS INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CRITERION VENTURES INC
		DATE OF NAME CHANGE:	19871126
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
<periodOfReport>2003-08-22</periodOfReport>
<notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000789851</issuerCik>
        <issuerName>VITALSTREAM HOLDINGS INC</issuerName>
        <issuerTradingSymbol>VSTH</issuerTradingSymbol>
</issuer>
<reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001258250</rptOwnerCik>
            <rptOwnerName>LINOS MICHAEL F</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE JENNER</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>IRVINE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92618</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>0</isDirector>
<isOfficer>1</isOfficer>
<isTenPercentOwner>0</isTenPercentOwner>
<isOther>0</isOther>
<officerTitle>Vice President of Sales</officerTitle>
<otherText></otherText>
</reportingOwnerRelationship>
</reportingOwner>
<nonDerivativeTable><nonDerivativeHolding><securityTitle><value>Common Stock</value>
</securityTitle>
<postTransactionAmounts><sharesOwnedFollowingTransaction><value>5000</value>
<footnoteId id="F1"></footnoteId>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature><directOrIndirectOwnership><value>D</value>
</directOrIndirectOwnership>
</ownershipNature>
</nonDerivativeHolding>
</nonDerivativeTable>
<derivativeTable><derivativeTransaction><securityTitle><value>Stock Options (Rights to Buy)</value>
</securityTitle>
<conversionOrExercisePrice><value>.35</value>
</conversionOrExercisePrice>
<transactionDate><value>2003-08-22</value>
</transactionDate>
<transactionCoding><transactionFormType>4</transactionFormType>
<transactionCode>A</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionAmounts><transactionShares><value>250000</value>
</transactionShares>
<transactionPricePerShare><value>0</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode><value>A</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<exerciseDate><footnoteId id="F2"></footnoteId>
</exerciseDate>
<expirationDate><value>2008-08-01</value>
</expirationDate>
<underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value>
</underlyingSecurityTitle>
<underlyingSecurityShares><value>250000</value>
</underlyingSecurityShares>
</underlyingSecurity>
<postTransactionAmounts><sharesOwnedFollowingTransaction><value>250000</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature><directOrIndirectOwnership><value>D</value>
</directOrIndirectOwnership>
</ownershipNature>
</derivativeTransaction>
</derivativeTable>
<footnotes><footnote id="F1">Previously Reported</footnote>
<footnote id="F2">Vesting Information - 1/3 vest at the end of the first year, 1/12 vest each quarter thereafter until fully vested.</footnote>
</footnotes>
<ownerSignature><signatureName>/s/ Michael Linos</signatureName>
<signatureDate>2003-09-25</signatureDate>
</ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----