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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001104659-06-083192.txt : 20061221
<SEC-HEADER>0001104659-06-083192.hdr.sgml : 20061221
<ACCEPTANCE-DATETIME>20061221132356
ACCESSION NUMBER:		0001104659-06-083192
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040825
FILED AS OF DATE:		20061221
DATE AS OF CHANGE:		20061221

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FEI CO
		CENTRAL INDEX KEY:			0000914329
		STANDARD INDUSTRIAL CLASSIFICATION:	LABORATORY ANALYTICAL INSTRUMENTS [3826]
		IRS NUMBER:				930621989
		STATE OF INCORPORATION:			OR
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		5350 NE DAWSON CREEK DRIVE
		CITY:			HILLSBORO
		STATE:			OR
		ZIP:			97124
		BUSINESS PHONE:		503-726-7500

	MAIL ADDRESS:	
		STREET 1:		5350 NE DAWSON CREEK DRIVE
		CITY:			HILLSBORO
		STATE:			OR
		ZIP:			97124

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KONINKLIJKE PHILIPS ELECTRONICS NV
		CENTRAL INDEX KEY:			0000313216
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC & OTHER ELECTRICAL EQUIPMENT (NO COMPUTER EQUIP) [3600]
		STATE OF INCORPORATION:			P7
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22780
		FILM NUMBER:		061292416

	BUSINESS ADDRESS:	
		STREET 1:		BREITNER CENTER
		STREET 2:		AMSTELPLEIN 2
		CITY:			AMSTERDAM
		STATE:			P7
		ZIP:			1096 BC
		BUSINESS PHONE:		31 20 59 77777

	MAIL ADDRESS:	
		STREET 1:		BREITNER CENTER
		STREET 2:		AMSTELPLEIN 2
		CITY:			AMSTERDAM
		STATE:			P7
		ZIP:			1096 BC

	FORMER NAME:	
		FORMER CONFORMED NAME:	PHILIPS ELECTRONICS N V
		DATE OF NAME CHANGE:	19930727

	FORMER NAME:	
		FORMER CONFORMED NAME:	PHILIPS NV
		DATE OF NAME CHANGE:	19910903

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PHILIPS BUSINESS ELECTRONICS INTERNATIONAL BV
		CENTRAL INDEX KEY:			0001263237

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22780
		FILM NUMBER:		061292417

	BUSINESS ADDRESS:	
		STREET 1:		BUILDING VO-I PO BOX 218
		STREET 2:		EINDHOVEN
		CITY:			THE NETHERLANDS 5600 MD
		STATE:			P8
		ZIP:			00000

	MAIL ADDRESS:	
		STREET 1:		BUILDING VO-I PO BOX 218
		STREET 2:		EINDHOVEN
		CITY:			THE NETHERLANDS 5600 MD
		STATE:			P8
		ZIP:			00000
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>a4a.xml
<DESCRIPTION>4/A
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2004-08-25</periodOfReport>

    <dateOfOriginalSubmission>2004-02-06</dateOfOriginalSubmission>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000914329</issuerCik>
        <issuerName>FEI CO</issuerName>
        <issuerTradingSymbol>FEIC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001263237</rptOwnerCik>
            <rptOwnerName>PHILIPS BUSINESS ELECTRONICS INTERNATIONAL BV</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>GLASLAAN 2</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>EINDHOVEN, THE NETHERLANDS</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>5616 LW</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000313216</rptOwnerCik>
            <rptOwnerName>KONINKLIJKE PHILIPS ELECTRONICS NV</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>GLASLAAN 2</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>EINDHOVEN, THE NETHERLANDS</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>5616 LW</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-08-25</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>14436</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8406007</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-12-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8406007</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>25</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to a Combination Agreement, dated November 15, 1996, as supplemented by an agreement effective as of December 31, 2000 (the &quot;Combination Agreement&quot;), by and among Philips Business Electronics International B.V. (&quot;PBE&quot;), Koninklijke Philips Electronics N.V. (&quot;Philips&quot;) and FEI Company (the &quot;Issuer&quot;), PBE has the right to receive from the Issuer, from time to time, without the payment of any additional consideration, additional shares of Common Stock when options, warrants, convertible securities or other rights to acquire shares of Common Stock outstanding (or issuable without further action by the Issuer's board of directors) as of February 21, 1997, are exercised or converted.  PBE is a wholly-owned subsidiary of Philips.  Accordingly, securities owned by PBE may be deemed beneficially owned by Philips.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ G.J. KLEISTERLEE, President &amp; CEO, KONINKLIJKE PHILIPS ELECTRONICS N.V.</signatureName>
        <signatureDate>2006-12-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ P.J. SIVIGNON, Executive Vice President &amp; CFO, KONINKLIJKE PHILIPS ELECTRONICS N.V.</signatureName>
        <signatureDate>2006-12-20</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ P.J. SIVIGNON, Authorised Person, PHILIPS BUSINESS ELECTRONICS INTERNATIONAL B.V.</signatureName>
        <signatureDate>2006-12-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
