-----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,
 AYxBgsKEzfMfpixVGSXqecW8mAFCr3KyV0A/qe+rarAedfrWwYc5gPplMvuSk2jP
 Vg7K0Xsx7V3S2/nngXNRUw==

<SEC-DOCUMENT>0001005477-03-001700.txt : 20030528
<SEC-HEADER>0001005477-03-001700.hdr.sgml : 20030528
<ACCEPTANCE-DATETIME>20030528152410
ACCESSION NUMBER:		0001005477-03-001700
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030523
FILED AS OF DATE:		20030528

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HOWELL DAVID S
		CENTRAL INDEX KEY:			0001111838

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-82900
		FILM NUMBER:		03721628

	BUSINESS ADDRESS:	
		STREET 1:		C/O THERMOGENESIS CORP
		STREET 2:		3146 GOLD CAMP DRIVE
		CITY:			RANCHO CORDOVA
		STATE:			CA
		ZIP:			95670

	MAIL ADDRESS:	
		STREET 1:		C/O THERMOGENESIS CORP
		STREET 2:		3146 GOLD CAMP DRIVE
		CITY:			RANCHO CORDOVA
		STATE:			CA
		ZIP:			95670

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			THERMOGENESIS CORP
		CENTRAL INDEX KEY:			0000811212
		STANDARD INDUSTRIAL CLASSIFICATION:	LABORATORY APPARATUS & FURNITURE [3821]
		IRS NUMBER:				943018487
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		3146 GOLD CAMP DRIVE
		CITY:			RANCHO CORDOVA
		STATE:			CA
		ZIP:			95670
		BUSINESS PHONE:		9168585100

	MAIL ADDRESS:	
		STREET 1:		3146 GOLD CAMP DRIVE
		CITY:			RANCHO CORDOVA
		STATE:			CA
		ZIP:			95670

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INSTA COOL INC OF NORTH AMERICA
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar123.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType>
    <periodOfReport>2003-05-23</periodOfReport>
    <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000811212</issuerCik>
        <issuerName>THERMOGENESIS CORP</issuerName>
        <issuerTradingSymbol>KOOL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
    <reportingOwnerId>
            <rptOwnerCik>0001111838</rptOwnerCik>
            <rptOwnerName>HOWELL DAVID S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
        <isDirector>1</isDirector>
        <isOfficer>0</isOfficer>
        <isTenPercentOwner>0</isTenPercentOwner>
        <isOther>0</isOther>
    </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common Stock</value>
        </securityTitle>
        <transactionDate>
            <value>2003-05-23</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>4</transactionFormType>
        <transactionCode>S</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
    </transactionCoding>
        <transactionAmounts>
            <transactionShares>
                <value>5000</value>
            </transactionShares>
            <transactionValue>
                <value>2.36</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>198205</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>I</value>
                <footnoteId id="F1"/>
            </directOrIndirectOwnership>
            <natureOfOwnership>
                <value>By New England Venture Partners LP</value>
            </natureOfOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>Common Stock</value>
        </securityTitle>
        <transactionDate>
            <value>2003-05-27</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>4</transactionFormType>
        <transactionCode>S</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
    </transactionCoding>
        <transactionAmounts>
            <transactionShares>
                <value>5000</value>
            </transactionShares>
            <transactionValue>
                <value>2.39</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>193205</value>
                <footnoteId id="F2"/>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>I</value>
                <footnoteId id="F1"/>
            </directOrIndirectOwnership>
            <natureOfOwnership>
                <value>By New England Venture Partners LP</value>
            </natureOfOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <footnotes>
        <footnote id="F1">Mr. Howell is a General Partner of New England Venture Partners LP.  He disclaims 89.5% of the ownership of the shares held by New England Venture Partners LP.</footnote>
        <footnote id="F2">Additionally, Mr. Howell directly owns 70,000 shares of common stock.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/S/ David Howell</signatureName>
        <signatureDate>2003-05-27</signatureDate>
    </ownerSignature>

</ownershipDocument>

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