-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 L1HfTfpVSz0NhAmp4lGWFUuAPu57cKuSGYVN3DPfEAjeB9V/5CZp/b7ndJLQnlZh
 7qjSyfURJMi9FRTR7fss5w==

<SEC-DOCUMENT>0001181431-04-059307.txt : 20041216
<SEC-HEADER>0001181431-04-059307.hdr.sgml : 20041216
<ACCEPTANCE-DATETIME>20041216165802
ACCESSION NUMBER:		0001181431-04-059307
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20041101
FILED AS OF DATE:		20041216
DATE AS OF CHANGE:		20041216

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			EDGERTON RONALD P
		CENTRAL INDEX KEY:			0001262792

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50391
		FILM NUMBER:		041208859

	MAIL ADDRESS:	
		STREET 1:		3815 SOUTH CAPITAL OF TEXAS HIGHWAY
		STREET 2:		BUILDING 3, SUITE 300
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78704

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SIGMATEL INC
		CENTRAL INDEX KEY:			0001043639
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				742691412
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3815 SOUTH CAPITAL OF TEXAS HIGHWAY
		STREET 2:		SUITE 300, BUILDING 3
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78704
		BUSINESS PHONE:		512-381-3700

	MAIL ADDRESS:	
		STREET 1:		3815 SOUTH CAPITAL OF TEXAS HWY
		STREET 2:		SUITE 300 BLDG 3
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78704
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>rrd60350.xml
<DESCRIPTION>EDGERTON FORM 4/A - 11/01/2004
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2004-11-01</periodOfReport>

    <dateOfOriginalSubmission>2004-11-02</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001043639</issuerCik>
        <issuerName>SIGMATEL INC</issuerName>
        <issuerTradingSymbol>SGTL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001262792</rptOwnerCik>
            <rptOwnerName>EDGERTON RONALD P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3815 SOUTH CAPITAL OF TEXAS HIGHWAY</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 300, BUILDING 3</rptOwnerStreet2>
            <rptOwnerCity>AUSTIN</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>78704</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>3.00</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2004-11-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>12114</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2001-07-17</value>
            </exerciseDate>
            <expirationDate>
                <value>2011-07-17</value>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>12114</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>708562</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This Amended Form 4 is filed for the purpose of correcting the expiration date (box 6b) in the Form 4 filed by reporting person on November 2, 2004.  The expiration date is herein correctly reported as July 17, 2011.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Ronald. P. Edgerton</signatureName>
        <signatureDate>2004-12-16</signatureDate>
    </ownerSignature>
</ownershipDocument>

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