-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001235802-09-000120.txt : 20091015
<SEC-HEADER>0001235802-09-000120.hdr.sgml : 20091015
<ACCEPTANCE-DATETIME>20091015192835
ACCESSION NUMBER:		0001235802-09-000120
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091014
FILED AS OF DATE:		20091015
DATE AS OF CHANGE:		20091015

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SHERWIN STEPHEN A
		CENTRAL INDEX KEY:			0001079462
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31812
		FILM NUMBER:		091122240

	MAIL ADDRESS:	
		STREET 1:		C/O CELL GENESYS, INC.
		STREET 2:		500 FORBES BLVD.
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BIOSANTE PHARMACEUTICALS INC
		CENTRAL INDEX KEY:			0001023024
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				582301143
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		111 BARCLAY BLVD STE 280
		CITY:			LINCOLNSHIRE
		STATE:			IL
		ZIP:			60069
		BUSINESS PHONE:		8474780500

	MAIL ADDRESS:	
		STREET 1:		111 BARCLAY BLVD STE 280
		CITY:			LINCOLNSHIRE
		STATE:			IL
		ZIP:			60069

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BEN ABRAHAM TECHNOLOGIES INC
		DATE OF NAME CHANGE:	19991027
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
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    <schemaVersion>X0303</schemaVersion>

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    <periodOfReport>2009-10-14</periodOfReport>

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    <issuer>
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        <issuerName>BIOSANTE PHARMACEUTICALS INC</issuerName>
        <issuerTradingSymbol>bpax</issuerTradingSymbol>
    </issuer>

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            <rptOwnerName>SHERWIN STEPHEN A</rptOwnerName>
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        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BIOSANTE PHARMACEUTICALS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>111 BARCLAY BOULEVARD</rptOwnerStreet2>
            <rptOwnerCity>LINCOLNSHIRE</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60069</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
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            <transactionDate>
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            <transactionCoding>
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            <conversionOrExercisePrice>
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            <transactionDate>
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            <transactionCoding>
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            <transactionTimeliness>
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            <transactionAmounts>
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                <transactionPricePerShare>
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            <exerciseDate>
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                <value></value>
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                <transactionShares>
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                <transactionShares>
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                <transactionPricePerShare>
                    <value>0</value>
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                    <value>A</value>
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            <exerciseDate>
                <footnoteId id="F14"/>
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            <expirationDate>
                <value>2019-10-13</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Commom Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>15000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                    <value>15000</value>
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    <footnotes>
        <footnote id="F1">Received in exchange for 474,621 shares of Cell Genesys, Inc. (&quot;Cell Genesys&quot;) common stock in connection with the merger of Cell Genesys with and into BioSante (the &quot;Merger&quot;).  Each share of the reporting person's Cell Genesys shares was exchanged for 0.1828 of a share of BioSante common stock in connection with the Merger.</footnote>
        <footnote id="F2">Options granted on February 6, 2008. Vesting occurs over a period of four years in a series of forty-eight (48) successive, equal monthly installments beginning on the grant date.</footnote>
        <footnote id="F3">Received in the Merger in exchange for an employee stock option to acquire 55,260 shares of Cell Genesys common stock for an exercise price of $1.84 per share.</footnote>
        <footnote id="F4">Received in the Merger in exchange for an employee stock option to acquire 319,740 shares of Cell Genesys common stock for an exercise price of $1.84 per share.</footnote>
        <footnote id="F5">Options granted on February 7, 2007. Vesting occurs over a period of four years in a series of forty-eight (48) successive, equal monthly installments beginning on the grant date.</footnote>
        <footnote id="F6">Received in the Merger in exchange for an employee stock option to acquire 27,761 shares of Cell Genesys common stock for an exercise price of $3.07 per share.</footnote>
        <footnote id="F7">Received in the Merger in exchange for an employee stock option to acquire 72,239 shares of Cell Genesys common stock for an exercise price of $3.07 per share.</footnote>
        <footnote id="F8">Options granted on February 7, 2006. Vesting occurs over a period of four years in a series of forty-eight (48) successive, equal monthly installments beginning on the grant date.</footnote>
        <footnote id="F9">Received in the Merger in exchange for an employee stock option to acquire 18,633 shares of Cell Genesys common stock for an exercise price of $6.07 per share.</footnote>
        <footnote id="F10">Received in the Merger in exchange for an employee stock option to acquire 41,367 shares of Cell Genesys common stock for an exercise price of $6.07 per share.</footnote>
        <footnote id="F11">Options granted on February 3, 2005. Vesting occurs over a period of four years in a series of forty-eight (48) successive, equal monthly installments beginning on the grant date.</footnote>
        <footnote id="F12">Received in the Merger in exchange for an employee stock option to acquire 100,248 shares of Cell Genesys common stock for an exercise price of $6.73 per share.</footnote>
        <footnote id="F13">Received in the Merger in exchange for an employee stock option to acquire 12,252 shares of Cell Genesys common stock for an exercise price of $6.73 per share.</footnote>
        <footnote id="F14">Option granted on October 14, 2009. Vesting occurs in four equal yearly installments, with the first installment becoming exercisable on the one-year anniversary of the grant date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Phillip B. Donenberg, attorney-in-fact</signatureName>
        <signatureDate>2009-10-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----