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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>As filed with the Securities and Exchange Commission on June&nbsp;12, 2009</B>
</DIV>


<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><B>Registration
No.&nbsp;333-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</B>
</DIV>


<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt; margin-top: 3pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>




<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>Washington, DC 20549</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 6pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM S-8</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>REGISTRATION STATEMENT<BR>
Under<BR>
THE SECURITIES ACT OF 1933</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>AMERISOURCEBERGEN CORPORATION</B>
</DIV>

<DIV align="center" style="font-size: 10pt"><B>(Exact name of registrant as specified in its charter)</B></DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 6pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
</TR>
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<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><B>DELAWARE</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>23-3079390</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>(State or other jurisdiction of <BR>
incorporation or organization)</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>(I.R.S. Employer<BR>
Identification No.)</B></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>1300 Morris Drive<BR>
Chesterbrook, Pennsylvania 19087-5594<BR>
(610)&nbsp;727-7000<BR>
(Address of Principal Executive Offices) (Zip Code)</B><BR>
<DIV align="center" style="font-size: 10pt; margin-top: 6pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>AMERISOURCEBERGEN CORPORATION MANAGEMENT INCENTIVE PLAN</B></DIV>

<DIV align="center" style="font-size: 10pt"><B>(Full title of the plan)</B></DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>John G. Chou, Esquire<BR>
Senior Vice President, General Counsel<BR>
and Secretary<BR>
AmerisourceBergen Corporation<BR>
1300 Morris Drive<BR>
Chesterbrook, PA 19087-5594<BR>
(Name and address of agent for service)</B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>(610)&nbsp;727-7000<BR>
(Telephone number, including area code, of agent for service)</B></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See the definitions of &#147;large accelerated
filer,&#148; &#147;accelerated filer&#148; and &#147;smaller reporting company&#148; in Rule&nbsp;12b-2 of the Exchange Act.
</DIV>

<TABLE width="100%" style="font-size: 10pt; margin-top: 0pt"><TR><TD>Large
accelerated filer&nbsp;<FONT face="Wingdings">&#254;</FONT></TD><TD align="center">Accelerated filer&nbsp;<FONT face="Wingdings">&#111;</FONT>&nbsp;</TD><TD align="center"><br>Non-accelerated filer&nbsp;<FONT face="Wingdings">&#111;</FONT><BR>(Do not check if a smaller reporting company)</TD><TD align="right">Smaller reporting company&nbsp;<FONT face="Wingdings">&#111;</FONT></TD></TR></TABLE>

<DIV align="center" style="font-size: 10pt; margin-top: 6pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>CALCULATION OF REGISTRATION FEE</B></DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom" style="font-size: 1pt">
    <TD width="1%">&nbsp;</TD>
    <TD width="54%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-bottom: 3px double #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Proposed</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Proposed</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>maximum</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>maximum</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Amount to be</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>offering price</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>aggregate</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Amount of</B></TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="left"><B>Title of securities to be registered</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>registered(1)(2)</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>per share(3)</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>offering price(3)</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>registration fee</B></TD>
    <TD width="1%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
                    <TD style="border-top: 2px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Common Stock ($.01 par value)</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">8,500,000</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">36.09 </TD>
    <TD nowrap style="border-top: 2px solid #000000">(3)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">306,765,000</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">17,117.49</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-top: 3px double #000000">&nbsp;</TD>
</TR>

<!-- End Table Body -->
</TABLE>

</DIV>


<DIV align="left">
<DIV style="font-size: 3pt; margin-top: 3pt; width: 18%; border-top: 0px solid #000000">&nbsp;</DIV>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>

<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>This registration statement (the &#147;Registration Statement&#148;) registers
the issuance of 8,500,000 additional shares of Common Stock, par value
$0.01 per share (the &#147;Common Stock&#148;), of AmerisourceBergen Corporation
(the &#147;Registrant&#148;) which are available for issuance under the
AmerisourceBergen Corporation Management Incentive Plan, as amended
and restated effective as of February&nbsp;19, 2009 (the &#147;Plan&#148;).</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Pursuant to Rule 416(a) under the Securities Act of 1933, as amended,
this Registration Statement also covers an indeterminate amount of
additional shares of Common Stock, which may be offered and issued in
accordance with the terms of the Plan to prevent dilution resulting
from any stock split, stock dividend, recapitalization or other
similar transaction. No additional registration fee is included for
these shares.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(3)</TD>
    <TD>&nbsp;</TD>
    <TD>Estimated solely for the purposes of calculating the registration fee
in accordance with Rule 457(c) and (h)(1) under the Securities Act of
1933 on the basis of the average of the high and low prices reported
for shares of Common Stock of the Registrant on the New York Stock
Exchange on June&nbsp;9, 2009.</TD>
</TR>

</TABLE>



<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>



</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">








<!-- TOC -->
<A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>

<P><CENTER>
<TABLE border="0" width="90%" cellpadding="0" cellspacing="0">
<TR>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
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	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="76%"></TD>
</TR>
<TR><TD colspan="9"><A HREF="#000">PART II<BR> INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#001">Item&nbsp;3. Incorporation of Documents by Reference.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#002">Item&nbsp;5. Interests of Named Experts and Counsel.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#003">Item&nbsp;8. Exhibits.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#004">Item&nbsp;9. Undertakings.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#005">SIGNATURES</A></TD></TR>
<TR><TD colspan="9"><A HREF="#006">EXHIBIT INDEX</A></TD></TR>
<TR><TD colspan="9"><A HREF="w74433exv5w1.htm">Exhibit 5.1</A></TD></TR>
<TR><TD colspan="9"><A HREF="w74433exv23w2.htm">Exhibit 23.2</A></TD></TR>
</TABLE>
</CENTER>
<!-- /TOC -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>







<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>REGISTRATION OF ADDITIONAL SECURITIES</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>INCORPORATION OF EARLIER REGISTRATION STATEMENTS BY REFERENCE</B>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;AmerisourceBergen Corporation (the &#147;Registrant&#148;) is filing this Registration Statement on Form
S-8 (the &#147;Registration Statement&#148;) to register an additional 8,500,000 shares of Common Stock, par
value $0.01 per share, for issuance under the AmerisourceBergen Corporation Management Incentive
Plan (formerly named the AmerisourceBergen Corporation 2002 Management Stock Incentive Plan), as
amended and restated effective as of February&nbsp;19, 2009 (the &#147;Plan&#148;). Unless otherwise noted herein,
this Registration Statement incorporates by reference the Registration Statements on Form S-8 (File
No.&nbsp;333-88230, File No.&nbsp;333-110431 and File No.&nbsp;333-140470).
</DIV>
<!-- link1 "PART II<BR> INFORMATION REQUIRED IN THE REGISTRATION STATEMENT" -->
<DIV align="left"><A NAME="000"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART II<BR>
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>
</DIV>

<!-- link2 "Item&nbsp;3. Incorporation of Documents by Reference." -->
<DIV align="left"><A NAME="001"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;3. Incorporation of Documents by Reference.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents previously filed with the Securities and Exchange Commission (the
&#147;Commission&#148;) by the Registrant pursuant to the Securities Exchange Act of 1934, as amended (the
&#147;Exchange Act&#148;), are incorporated by reference in this Registration Statement:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;the Registrant&#146;s Annual Report on Form 10-K for the fiscal year ended September&nbsp;30, 2008;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;the Registrant&#146;s Quarterly Reports on Form 10-Q for the fiscal quarters ended December&nbsp;31,
2008 and March&nbsp;31, 2009;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;the Registrant&#146;s Current Reports on Form 8-K filed with the Commission on October&nbsp;1, 2008,
October&nbsp;30, 2008, November&nbsp;14, 2008, December&nbsp;11, 2008, January&nbsp;22, 2009, February&nbsp;19, 2009, April
23, 2009, May&nbsp;1, 2009, May&nbsp;19, 2009, June&nbsp;2, 2009 and June&nbsp;4, 2009;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)&nbsp;Definitive Proxy Statement with respect to Annual Meeting of Stockholders held on February
19, 2009, as filed with the Commission on January&nbsp;9, 2009; and
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e)&nbsp;The description of the Common Stock contained in the Registration Statement on Form S-4
(File No.&nbsp;333-61440), filed with the Commission on May&nbsp;23, 2001, as amended, and the prospectus
filed pursuant to Rule&nbsp;424(b)(3), filed with the Commission on August&nbsp;1, 2001, including any
amendments or reports filed for the purpose of updating such description, in which there is
described the terms, rights and provisions applicable to our Common Stock.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All documents subsequently filed by the Registrant pursuant to Sections&nbsp;13(a), 13(c), 14 and
15(d) of the Exchange Act, prior to the filing of a post-effective amendment which indicates that
all securities offered have been sold or which deregisters all securities then remaining unsold,
shall be deemed to be incorporated by reference in this Registration Statement and to be part
hereof from the date of filing of such documents.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any statement contained in a document incorporated or deemed to be incorporated by reference
in this Registration Statement shall be deemed to be modified or superseded for purposes of this
Registration Statement to the extent that a statement contained in this Registration Statement, or
in any other subsequently filed document that also is or is deemed to be incorporated by reference
in this Registration Statement, modifies or supersedes such prior statement. Any statement
contained in this Registration Statement shall be deemed to be modified or superseded to the extent
that a statement contained in a subsequently filed document that is or is deemed to be incorporated
by reference in this Registration Statement modifies or supersedes such prior statement. Any
statement so modified or superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Registration Statement.
</DIV>
<!-- link2 "Item&nbsp;5. Interests of Named Experts and Counsel." -->
<DIV align="left"><A NAME="002"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;5. Interests of Named Experts and Counsel.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;John G. Chou, who is the Registrant&#146;s Senior Vice President, General Counsel and Secretary,
has issued an opinion about the validity of the securities registered hereby, as well as other
relevant legal matters. Mr.&nbsp;Chou beneficially owns, or has options to acquire, a number of shares
of the Registrant&#146;s common stock, which amount in the aggregate constitutes less than 1% of the
total outstanding common stock.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link2 "Item&nbsp;8. Exhibits." -->
<DIV align="left"><A NAME="003"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;8. Exhibits.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following exhibits are filed herewith or incorporated by reference as part of this
Registration Statement:
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="7%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="90%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit No.</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Counsel</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">AmerisourceBergen Corporation Management Incentive Plan, as
amended and restated effective as of February&nbsp;19, 2009
(incorporated by reference to Exhibit&nbsp;99.2 to the Registrant&#146;s
Current Report on Form&nbsp;8-K filed on February&nbsp;19, 2009)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Counsel (included in Exhibit&nbsp;5.1)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Ernst &#038; Young LLP, Independent Registered Public Accounting Firm</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (see signature page at page 5)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<!-- link2 "Item&nbsp;9. Undertakings." -->
<DIV align="left"><A NAME="004"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;9. Undertakings.</B>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">The undersigned Registrant hereby undertakes:
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:</TD>
</TR>

</TABLE>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">(i)&nbsp;To include any prospectus required by Section&nbsp;10(a)(3) of the Securities Act of 1933
(&#147;Securities Act&#148;);
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">(ii)&nbsp;To reflect in the prospectus any facts or events arising after the effective date of
this Registration Statement (or the most recent post-effective amendment thereof) which,
individually or in the aggregate, represent a fundamental change in the information set forth in
this Registration Statement; and
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">(iii)&nbsp;To include any material information with respect to the plan of distribution not
previously disclosed in this Registration Statement or any material change to such information in
this Registration Statement;
</DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">provided, however, that paragraphs (i)&nbsp;and (ii)&nbsp;above do not apply if the information required to
be included in a post-effective amendment by those paragraphs is contained in reports filed with
the Commission by the Registrant pursuant to Section&nbsp;13 or 15(d) of the Exchange Act that are
incorporated by reference in this Registration Statement.
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed to
be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be
deemed to be the initial bona fide offering thereof.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To remove from registration by means of a post-effective amendment any
of the securities being registered which remain unsold at the
termination of the offering.</TD>
</TR>

</TABLE>
</DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">The undersigned Registrant hereby undertakes that, for purposes of determining any liability under
the Securities Act, each filing of the Registrant&#146;s annual report pursuant to Section 13(a) or
Section 15(d) of the Exchange Act (and, where applicable, each filing of an employee benefit plan&#146;s
annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in
the registration statement shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Insofar as indemnification for liabilities arising under the Securities Act may be permitted to
directors, officers and controlling persons of the Registrant pursuant to the provisions described
under &#147;Item&nbsp;6&#151;Indemnification of Directors and Officers&#148;, or otherwise, the Registrant has been
advised that in the opinion of the Commission such indemnification is against public policy as
expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the Registrant of expenses
incurred or paid by a director, officer or controlling person of the Registrant in the successful
defense of any action, suit or proceeding) is asserted by such director, officer or controlling
person in connection with the securities being registered, the Registrant will, unless in the
opinion of its counsel the matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such indemnification by it is against public policy
as expressed in the Securities Act and will be governed by the final adjudication of such issue.
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->-3-<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">



<!-- link1 "SIGNATURES" -->
<DIV align="left"><A NAME="005"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt">SIGNATURES
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act, the Registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Chesterbrook, State of Pennsylvania, on June&nbsp;12, 2009.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
    <TD width="48%">&nbsp;</TD>
</TR>
<TR>
    <TD colspan="3" align="left">AMERISOURCEBERGEN CORPORATION<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top" align="left">&nbsp;</TD>
</TR><TR>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/s/ R. David Yost
&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">&nbsp;</TD>
</TR><TR>
    <TD>&nbsp;</TD>
    <TD valign="top">Name:&nbsp;&nbsp;</TD>
    <TD align="left">R. David Yost&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">&nbsp;</TD>
</TR><TR>
    <TD>&nbsp;</TD>
    <TD valign="top">Title:&nbsp;&nbsp;</TD>
    <TD align="left">Chief Executive Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left">&nbsp;</TD>
</TR>

</TABLE>

<P align="center" style="font-size: 10pt"><!-- Folio -->-4-<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>

</TABLE>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt">POWER OF ATTORNEY
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KNOW ALL MEN BY THESE PRESENTS, that each individual whose signature appears below constitutes
and appoints John G. Chou, his true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him and in his name, place and stead, in any and all
capacities, to sign any and all amendments (including post-effective amendments) to this
Registration Statement, and to file the same, with all exhibits thereto and other documents in
connection therewith, with the Securities and Exchange Commission, granting unto said
attorney-in-fact and agent, full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as fully to all intents and purposes
as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact
and agent, or his substitutes or substitute, may lawfully do or cause to be done by virtue hereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act, this Registration Statement has been
signed by the following persons in the capacities and on the dates indicated.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date: June 12, 2009&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ R. David Yost
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">R. David Yost, President and Chief Executive Officer and Director (Principal Executive Officer)&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date: June 12, 2009&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ Michael D. DiCandilo
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Michael D. DiCandilo, Executive Vice President and Chief Financial Officer (Principal Financial and
Accounting Officer)&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date: June 12, 2009&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ Richard C. Gozon
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Richard C. Gozon, Director and Chairman&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date: June 12, 2009&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ Charles H. Cotros
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Charles H. Cotros, Director&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date:  June 12, 2009&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ Richard W. Gochnauer
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Richard W. Gochnauer, Director&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date: June 12, 2009&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ Edward E. Hagenlocker
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Edward E. Hagenlocker, Director&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date: June 12, 2009&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ Jane E. Henney, M.D.
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Jane E. Henney, M.D., Director&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date: June 12, 2009&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ Michael J. Long
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Michael J. Long, Director&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">Date: June 12, 2009&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ Henry W. McGee
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Henry W. McGee, Director&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

</TABLE>

<P align="center" style="font-size: 10pt"><!-- Folio -->-5-<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>

</TABLE>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt">ACKNOWLEDGMENT BY AGENT
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I, John G. Chou, have read the above power of attorney and I am the person identified as the
attorney-in-fact and agent for the principals whose signatures appear above. I hereby acknowledge
that in the absence of a specific provision to the contrary in the power of attorney or in the
Pennsylvania Probate, Estates and Fiduciaries Code (20 Pa. C.S.) when I act as attorney-in-fact and
agent:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I shall exercise the power for the benefit of the principals.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I shall keep the assets of the principals separate from my assets.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I shall exercise reasonable caution and prudence.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I shall keep a full and accurate record of all actions, receipts and disbursements on behalf
of the principals.
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="35%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="60%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ John G. Chou
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
John G. Chou
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">June&nbsp;12, 2009<br>
(Attorney-in-fact)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->-6-<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<!-- link1 "EXHIBIT INDEX" -->
<DIV align="left"><A NAME="006"></A></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt">EXHIBIT INDEX
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="4%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="92%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Counsel (Consent of Counsel included therein)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">10.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">AmerisourceBergen Corporation Management Incentive Plan, as amended and
restated effective as of February&nbsp;19, 2009 (incorporated by reference to
Exhibit&nbsp;99.2 to the Registrant&#146;s Current Report on Form&nbsp;8-K filed on
February&nbsp;19, 2009)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Counsel (included in Exhibit&nbsp;5.1)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Ernst &#038; Young LLP, Independent Registered Public Accounting Firm</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="right" valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (see signature page at page 5)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

</BODY>
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sv8
Table of Contents
As filed with the Securities and Exchange Commission on June 12, 2009
Registration
No. 333-
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM S-8
REGISTRATION STATEMENT
Under
THE SECURITIES ACT OF 1933
AMERISOURCEBERGEN CORPORATION
(Exact name of registrant as specified in its charter)
DELAWARE
23-3079390
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
1300 Morris Drive
Chesterbrook, Pennsylvania 19087-5594
(610) 727-7000
(Address of Principal Executive Offices) (Zip Code)
AMERISOURCEBERGEN CORPORATION MANAGEMENT INCENTIVE PLAN
(Full title of the plan)
John G. Chou, Esquire
Senior Vice President, General Counsel
and Secretary
AmerisourceBergen Corporation
1300 Morris Drive
Chesterbrook, PA 19087-5594
(Name and address of agent for service)
(610) 727-7000
(Telephone number, including area code, of agent for service)
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated
filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.
Large
accelerated filer
þ
Accelerated filer
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CALCULATION OF REGISTRATION FEE
Proposed
Proposed
maximum
maximum
Amount to be
offering price
aggregate
Amount of
Title of securities to be registered
registered(1)(2)
per share(3)
offering price(3)
registration fee
Common Stock ($.01 par value)
8,500,000
$
36.09
(3)
$
306,765,000
$
17,117.49
(1)
This registration statement (the "Registration Statement") registers
the issuance of 8,500,000 additional shares of Common Stock, par value
$0.01 per share (the "Common Stock"), of AmerisourceBergen Corporation
(the "Registrant") which are available for issuance under the
AmerisourceBergen Corporation Management Incentive Plan, as amended
and restated effective as of February 19, 2009 (the "Plan").
(2)
Pursuant to Rule 416(a) under the Securities Act of 1933, as amended,
this Registration Statement also covers an indeterminate amount of
additional shares of Common Stock, which may be offered and issued in
accordance with the terms of the Plan to prevent dilution resulting
from any stock split, stock dividend, recapitalization or other
similar transaction. No additional registration fee is included for
these shares.
(3)
Estimated solely for the purposes of calculating the registration fee
in accordance with Rule 457(c) and (h)(1) under the Securities Act of
1933 on the basis of the average of the high and low prices reported
for shares of Common Stock of the Registrant on the New York Stock
Exchange on June 9, 2009.
TABLE OF CONTENTS
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
Item 5. Interests of Named Experts and Counsel.
Item 8. Exhibits.
Item 9. Undertakings.
SIGNATURES
EXHIBIT INDEX
Exhibit 5.1
Exhibit 23.2
Table of Contents
REGISTRATION OF ADDITIONAL SECURITIES
INCORPORATION OF EARLIER REGISTRATION STATEMENTS BY REFERENCE
AmerisourceBergen Corporation (the "Registrant") is filing this Registration Statement on Form
S-8 (the "Registration Statement") to register an additional 8,500,000 shares of Common Stock, par
value $0.01 per share, for issuance under the AmerisourceBergen Corporation Management Incentive
Plan (formerly named the AmerisourceBergen Corporation 2002 Management Stock Incentive Plan), as
amended and restated effective as of February 19, 2009 (the "Plan"). Unless otherwise noted herein,
this Registration Statement incorporates by reference the Registration Statements on Form S-8 (File
No. 333-88230, File No. 333-110431 and File No. 333-140470).
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
The following documents previously filed with the Securities and Exchange Commission (the
"Commission") by the Registrant pursuant to the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), are incorporated by reference in this Registration Statement:
(a) the Registrant's Annual Report on Form 10-K for the fiscal year ended September 30, 2008;
(b) the Registrant's Quarterly Reports on Form 10-Q for the fiscal quarters ended December 31,
2008 and March 31, 2009;
(c) the Registrant's Current Reports on Form 8-K filed with the Commission on October 1, 2008,
October 30, 2008, November 14, 2008, December 11, 2008, January 22, 2009, February 19, 2009, April
23, 2009, May 1, 2009, May 19, 2009, June 2, 2009 and June 4, 2009;
(d) Definitive Proxy Statement with respect to Annual Meeting of Stockholders held on February
19, 2009, as filed with the Commission on January 9, 2009; and
(e) The description of the Common Stock contained in the Registration Statement on Form S-4
(File No. 333-61440), filed with the Commission on May 23, 2001, as amended, and the prospectus
filed pursuant to Rule 424(b)(3), filed with the Commission on August 1, 2001, including any
amendments or reports filed for the purpose of updating such description, in which there is
described the terms, rights and provisions applicable to our Common Stock.
All documents subsequently filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and
15(d) of the Exchange Act, prior to the filing of a post-effective amendment which indicates that
all securities offered have been sold or which deregisters all securities then remaining unsold,
shall be deemed to be incorporated by reference in this Registration Statement and to be part
hereof from the date of filing of such documents.
Any statement contained in a document incorporated or deemed to be incorporated by reference
in this Registration Statement shall be deemed to be modified or superseded for purposes of this
Registration Statement to the extent that a statement contained in this Registration Statement, or
in any other subsequently filed document that also is or is deemed to be incorporated by reference
in this Registration Statement, modifies or supersedes such prior statement. Any statement
contained in this Registration Statement shall be deemed to be modified or superseded to the extent
that a statement contained in a subsequently filed document that is or is deemed to be incorporated
by reference in this Registration Statement modifies or supersedes such prior statement. Any
statement so modified or superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Registration Statement.
Item 5. Interests of Named Experts and Counsel.
John G. Chou, who is the Registrant's Senior Vice President, General Counsel and Secretary,
has issued an opinion about the validity of the securities registered hereby, as well as other
relevant legal matters. Mr. Chou beneficially owns, or has options to acquire, a number of shares
of the Registrant's common stock, which amount in the aggregate constitutes less than 1% of the
total outstanding common stock.
Table of Contents
Item 8. Exhibits.
The following exhibits are filed herewith or incorporated by reference as part of this
Registration Statement:
Exhibit No.
Description
5.1
Opinion of Counsel
10.1
AmerisourceBergen Corporation Management Incentive Plan, as
amended and restated effective as of February 19, 2009
(incorporated by reference to Exhibit 99.2 to the Registrant's
Current Report on Form 8-K filed on February 19, 2009)
23.1
Consent of Counsel (included in Exhibit 5.1)
23.2
Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm
24.1
Power of Attorney (see signature page at page 5)
Item 9. Undertakings.
The undersigned Registrant hereby undertakes:
(1)
To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:
(i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933
("Securities Act");
(ii) To reflect in the prospectus any facts or events arising after the effective date of
this Registration Statement (or the most recent post-effective amendment thereof) which,
individually or in the aggregate, represent a fundamental change in the information set forth in
this Registration Statement; and
(iii) To include any material information with respect to the plan of distribution not
previously disclosed in this Registration Statement or any material change to such information in
this Registration Statement;
provided, however, that paragraphs (i) and (ii) above do not apply if the information required to
be included in a post-effective amendment by those paragraphs is contained in reports filed with
the Commission by the Registrant pursuant to Section 13 or 15(d) of the Exchange Act that are
incorporated by reference in this Registration Statement.
(2)
That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed to
be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be
deemed to be the initial bona fide offering thereof.
(3)
To remove from registration by means of a post-effective amendment any
of the securities being registered which remain unsold at the
termination of the offering.
The undersigned Registrant hereby undertakes that, for purposes of determining any liability under
the Securities Act, each filing of the Registrant's annual report pursuant to Section 13(a) or
Section 15(d) of the Exchange Act (and, where applicable, each filing of an employee benefit plan's
annual report pursuant to Section 15(d) of the Exchange Act) that is incorporated by reference in
the registration statement shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
Insofar as indemnification for liabilities arising under the Securities Act may be permitted to
directors, officers and controlling persons of the Registrant pursuant to the provisions described
under "Item 6—Indemnification of Directors and Officers", or otherwise, the Registrant has been
advised that in the opinion of the Commission such indemnification is against public policy as
expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the Registrant of expenses
incurred or paid by a director, officer or controlling person of the Registrant in the successful
defense of any action, suit or proceeding) is asserted by such director, officer or controlling
person in connection with the securities being registered, the Registrant will, unless in the
opinion of its counsel the matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such indemnification by it is against public policy
as expressed in the Securities Act and will be governed by the final adjudication of such issue.
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Table of Contents
SIGNATURES
Pursuant to the requirements of the Securities Act, the Registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Chesterbrook, State of Pennsylvania, on June 12, 2009.
AMERISOURCEBERGEN CORPORATION
By:
/s/ R. David Yost
Name:
R. David Yost
Title:
Chief Executive Officer
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Table of Contents
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that each individual whose signature appears below constitutes
and appoints John G. Chou, his true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him and in his name, place and stead, in any and all
capacities, to sign any and all amendments (including post-effective amendments) to this
Registration Statement, and to file the same, with all exhibits thereto and other documents in
connection therewith, with the Securities and Exchange Commission, granting unto said
attorney-in-fact and agent, full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as fully to all intents and purposes
as he might or could do in person, hereby ratifying and confirming all that said attorney-in-fact
and agent, or his substitutes or substitute, may lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act, this Registration Statement has been
signed by the following persons in the capacities and on the dates indicated.
Date: June 12, 2009
/s/ R. David Yost
R. David Yost, President and Chief Executive Officer and Director (Principal Executive Officer)
Date: June 12, 2009
/s/ Michael D. DiCandilo
Michael D. DiCandilo, Executive Vice President and Chief Financial Officer (Principal Financial and
Accounting Officer)
Date: June 12, 2009
/s/ Richard C. Gozon
Richard C. Gozon, Director and Chairman
Date: June 12, 2009
/s/ Charles H. Cotros
Charles H. Cotros, Director
Date:  June 12, 2009
/s/ Richard W. Gochnauer
Richard W. Gochnauer, Director
Date: June 12, 2009
/s/ Edward E. Hagenlocker
Edward E. Hagenlocker, Director
Date: June 12, 2009
/s/ Jane E. Henney, M.D.
Jane E. Henney, M.D., Director
Date: June 12, 2009
/s/ Michael J. Long
Michael J. Long, Director
Date: June 12, 2009
/s/ Henry W. McGee
Henry W. McGee, Director
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Table of Contents
ACKNOWLEDGMENT BY AGENT
I, John G. Chou, have read the above power of attorney and I am the person identified as the
attorney-in-fact and agent for the principals whose signatures appear above. I hereby acknowledge
that in the absence of a specific provision to the contrary in the power of attorney or in the
Pennsylvania Probate, Estates and Fiduciaries Code (20 Pa. C.S.) when I act as attorney-in-fact and
agent:
I shall exercise the power for the benefit of the principals.
I shall keep the assets of the principals separate from my assets.
I shall exercise reasonable caution and prudence.
I shall keep a full and accurate record of all actions, receipts and disbursements on behalf
of the principals.
/s/ John G. Chou
John G. Chou
June 12, 2009
(Attorney-in-fact)
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Table of Contents
EXHIBIT INDEX
5.1
Opinion of Counsel (Consent of Counsel included therein)
10.1
AmerisourceBergen Corporation Management Incentive Plan, as amended and
restated effective as of February 19, 2009 (incorporated by reference to
Exhibit 99.2 to the Registrant's Current Report on Form 8-K filed on
February 19, 2009)
23.1
Consent of Counsel (included in Exhibit 5.1)
23.2
Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm
24.1
Power of Attorney (see signature page at page 5)