-----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,
 CqIVQnW6rT7EyfO14VmXhVRy/DdJ6F6Nv7joMLs36v4bLQ5leBS+uv9qdg6Yiebs
 PSTcWWStYZDWD+uNSl4EpQ==

<SEC-DOCUMENT>0001181431-04-039266.txt : 20040806
<SEC-HEADER>0001181431-04-039266.hdr.sgml : 20040806
<ACCEPTANCE-DATETIME>20040806193738
ACCESSION NUMBER:		0001181431-04-039266
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040804
FILED AS OF DATE:		20040806

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			YOCHUM DOREEN S
		CENTRAL INDEX KEY:			0001264777

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50402
		FILM NUMBER:		04959230

	BUSINESS ADDRESS:	
		STREET 1:		1240 CROSSMAN AVE
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94089
		BUSINESS PHONE:		4084003000

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PALMSOURCE INC
		CENTRAL INDEX KEY:			0001178056
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				770586278
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1240 CROSSMAN AVENUE
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			94086
		BUSINESS PHONE:		408-400-3000

	MAIL ADDRESS:	
		STREET 1:		1240 CROSSMAN AVENUE
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			94086
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd50003.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-08-04</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001178056</issuerCik>
        <issuerName>PALMSOURCE INC</issuerName>
        <issuerTradingSymbol>PSRC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001264777</rptOwnerCik>
            <rptOwnerName>YOCHUM DOREEN S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1240 CROSSMAN AVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SUNNYVALE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94089</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CAO and Secretary</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-08-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>14598</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>19.8754</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>72990</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Sale made pursuant to a 10b5-1 trading plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Geraldine McGrath, Attorney-in-Fact</signatureName>
        <signatureDate>2004-08-06</signatureDate>
    </ownerSignature>
</ownershipDocument>

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