-----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,
 AwXmeXH5QtgsjvDYCuJxiYUiW4YegxfTlNxEXDKCh9bttgqm2612Pj7VLOYDahCX
 eBXN/Fg8wqc19/wE2vZovQ==

<SEC-DOCUMENT>0001144204-08-028413.txt : 20080514
<SEC-HEADER>0001144204-08-028413.hdr.sgml : 20080514
<ACCEPTANCE-DATETIME>20080514084813
ACCESSION NUMBER:		0001144204-08-028413
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080513
FILED AS OF DATE:		20080514
DATE AS OF CHANGE:		20080514

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PRESSURE BIOSCIENCES INC
		CENTRAL INDEX KEY:			0000830656
		STANDARD INDUSTRIAL CLASSIFICATION:	MEASURING & CONTROLLING DEVICES, NEC [3829]
		IRS NUMBER:				042652826
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		321 MANLEY STREET
		CITY:			WEST BRIDGEWATER
		STATE:			MA
		ZIP:			02379
		BUSINESS PHONE:		5085801818

	MAIL ADDRESS:	
		STREET 1:		321 MANLEY STREET
		CITY:			WEST BRIDGEWATER
		STATE:			MA
		ZIP:			02379

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BOSTON BIOMEDICA INC
		DATE OF NAME CHANGE:	19960812

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FRITZSCHE R WAYNE
		CENTRAL INDEX KEY:			0001029493

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21615
		FILM NUMBER:		08829580

	BUSINESS ADDRESS:	
		STREET 1:		6413 MAC LAURIN DRIVE
		CITY:			TAMPA
		STATE:			FL
		ZIP:			33647
		BUSINESS PHONE:		8139094707

	MAIL ADDRESS:	
		STREET 1:		835 GREENS PARKWAY, SUITE 150
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77067
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>v114177_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-05-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000830656</issuerCik>
        <issuerName>PRESSURE BIOSCIENCES INC</issuerName>
        <issuerTradingSymbol>PBIO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001029493</rptOwnerCik>
            <rptOwnerName>FRITZSCHE R WAYNE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>19814 WELLINGTON MANOR BLVD.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LUTZ</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33549</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-05-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.86</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8421</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ Richard Schumacher, Attorney-in-fact</signatureName>
        <signatureDate>2008-05-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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