-----BEGIN PRIVACY-ENHANCED MESSAGE-----
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,
 BT0pmwMHoODIk8MNBtUd0qNRee2Sr/kPXlg77FwDaQ7GEArrgwJ24ai756W0/Trl
 W245pfahmqeOskrPNVfAnA==

<SEC-DOCUMENT>0000910484-09-000006.txt : 20090319
<SEC-HEADER>0000910484-09-000006.hdr.sgml : 20090319
<ACCEPTANCE-DATETIME>20090319165610
ACCESSION NUMBER:		0000910484-09-000006
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090317
FILED AS OF DATE:		20090319
DATE AS OF CHANGE:		20090319

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Sandri Joseph M Jr
		CENTRAL INDEX KEY:			0001329607

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21091
		FILM NUMBER:		09693912

	MAIL ADDRESS:	
		STREET 1:		C/O FIRST AVENUE NETWORKS, INC.
		STREET 2:		7925 JONES BRANCH DRIVE, STE. 3300
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102

	FORMER NAME:	
		FORMER CONFORMED NAME:	Sandri Joseph M
		DATE OF NAME CHANGE:	20050608

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FiberTower CORP
		CENTRAL INDEX KEY:			0001010286
		STANDARD INDUSTRIAL CLASSIFICATION:	RADIO TELEPHONE COMMUNICATIONS [4812]
		IRS NUMBER:				521869023
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		185 BERRY STREET
		STREET 2:		SUITE 4800
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94107
		BUSINESS PHONE:		(415) 659-1350

	MAIL ADDRESS:	
		STREET 1:		185 BERRY STREET
		STREET 2:		SUITE 4800
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94107

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST AVENUE NETWORKS INC
		DATE OF NAME CHANGE:	20020215

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ADVANCED RADIO TELECOM CORP
		DATE OF NAME CHANGE:	19960503
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-03-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001010286</issuerCik>
        <issuerName>FiberTower CORP</issuerName>
        <issuerTradingSymbol>FTWR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001329607</rptOwnerCik>
            <rptOwnerName>Sandri Joseph M Jr</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O FIBERTOWER CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>185 BERRY STREET, SUITE 4800</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94107</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP - Government &amp; Regulatory</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.14</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-03-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>200000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2014-03-17</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>200000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>200000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Options are scheduled to vest 25% on the first anniversary of the date of grant, and 1/48th of the total grant each month thereafter.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Joseph Sandri</signatureName>
        <signatureDate>2009-03-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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