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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001104659-06-022286.txt : 20060404
<SEC-HEADER>0001104659-06-022286.hdr.sgml : 20060404
<ACCEPTANCE-DATETIME>20060404213947
ACCESSION NUMBER:		0001104659-06-022286
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060401
FILED AS OF DATE:		20060404
DATE AS OF CHANGE:		20060404

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ABGENIX INC
		CENTRAL INDEX KEY:			0001052837
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				943248826
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6701 KAISER DRIVE
		CITY:			FREMONT
		STATE:			CA
		ZIP:			94555
		BUSINESS PHONE:		5106086500

	MAIL ADDRESS:	
		STREET 1:		6701 KAISER DRIVE
		CITY:			FREMONT
		STATE:			CA
		ZIP:			94555

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MILLS GAYLE
		CENTRAL INDEX KEY:			0001280355

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24207
		FILM NUMBER:		06740393

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		5102846500

	MAIL ADDRESS:	
		STREET 1:		6701 KAISER DRIVE
		CITY:			FREMONT
		STATE:			CA
		ZIP:			94555
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>4
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        <issuerName>ABGENIX INC</issuerName>
        <issuerTradingSymbol>ABGX</issuerTradingSymbol>
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            <rptOwnerName>MILLS GAYLE</rptOwnerName>
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            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FREMONT</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94555</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
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            <officerTitle>SVP, Business Development</officerTitle>
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    <footnotes>
        <footnote id="F1">1/48 of the total shares subject to the option became exercisable on the one month anniversary of the first date exercisable and an additional 1/48 of the total shares subject to the option became exercisable each full month thereafter with the balance fully vesting on 4/1/2006.</footnote>
        <footnote id="F2">This option was converted into an option to acquire 6,300 shares of Amgen Inc. common stock at an exercise price of $76.39 per share pursuant to the terms of the Agreement and Plan of Merger, dated as of December 14, 2005, among Abgenix, Inc., Amgen Inc. and Athletics Merger Sub, Inc.</footnote>
        <footnote id="F3">This option was converted into an option to acquire 984 shares of Amgen Inc. common stock at an exercise price of $76.39 per share pursuant to the terms of the Agreement and Plan of Merger, dated as of December 14, 2005, among Abgenix, Inc., Amgen Inc. and Athletics Merger Sub, Inc.</footnote>
        <footnote id="F4">This option was converted into an option to acquire 23,250 shares of Amgen Inc. common stock at an exercise price of $28.62 per share pursuant to the terms of the Agreement and Plan of Merger, dated as of December 14, 2005, among Abgenix, Inc., Amgen Inc. and Athletics Merger Sub, Inc.</footnote>
        <footnote id="F5">This option was converted into an option to acquire 9,920 shares of Amgen Inc. common stock at an exercise price of $49.42 per share pursuant to the terms of the Agreement and Plan of Merger, dated as of December 14, 2005, among Abgenix, Inc., Amgen Inc. and Athletics Merger Sub, Inc.</footnote>
        <footnote id="F6">This option was converted into an option to acquire 6,006 shares of Amgen Inc. common stock at an exercise price of $30.71 per share pursuant to the terms of the Agreement and Plan of Merger, dated as of December 14, 2005, among Abgenix, Inc., Amgen Inc. and Athletics Merger Sub, Inc.</footnote>
        <footnote id="F7">This option was converted into an option to acquire 3,293 shares of Amgen Inc. common stock at an exercise price of $30.71 per share pursuant to the terms of the Agreement and Plan of Merger, dated as of December 14, 2005, among Abgenix, Inc., Amgen Inc. and Athletics Merger Sub, Inc.</footnote>
        <footnote id="F8">This option was converted into an option to acquire 4,104 shares of Amgen Inc. common stock at an exercise price of $28.97 per share pursuant to the terms of the Agreement and Plan of Merger, dated as of December 14, 2005, among Abgenix, Inc., Amgen Inc. and Athletics Merger Sub, Inc.</footnote>
        <footnote id="F9">This option was converted into an option to acquire 20,695 shares of Amgen Inc. common stock at an exercise price of $28.97 per share pursuant to the terms of the Agreement and Plan of Merger, dated as of December 14, 2005, among Abgenix, Inc., Amgen Inc. and Athletics Merger Sub, Inc.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ George F. Fraley (Attorney-in-Fact)</signatureName>
        <signatureDate>2006-04-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
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