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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED STATES</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Washington, DC 20549</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM&nbsp;8-K</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">CURRENT REPORT</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">PURSUANT TO SECTION&nbsp;13 OR 15(d)&nbsp;OF THE SECURITIES EXCHANGE ACT OF 1934</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date of Report (Date of earliest event reported):<b> May&nbsp;17, 2013</b></font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">AmerisourceBergen Corporation</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of Registrant as specified in its charter)</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Delaware</font></b></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">1-16671</font></b></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">23-3079390</font></b></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or Other</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Commission File Number</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(I.R.S. Employer</font></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Jurisdiction of</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">1300 Morris Drive</font></b></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Chesterbrook, PA</font></b></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">19087</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Registrant&#146;s telephone number, including area code:<b><font style="font-weight:bold;">  </font>&#160;(610) 727-7000</b></font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">N/A</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Former name or former address, if changed since last report.)</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Check the appropriate box below if the Form&nbsp;8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (<i> see</i>&#160; General Instruction A.2. below):</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" face="Wingdings" style="font-size:10.0pt;"> </font><font size="2" style="font-size:10.0pt;">Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" face="Wingdings" style="font-size:10.0pt;"> </font><font size="2" style="font-size:10.0pt;">Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" face="Wingdings" style="font-size:10.0pt;"> </font><font size="2" style="font-size:10.0pt;">Pre-commencement communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act (17 CFR 240.14d-2(b))</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="2" face="Wingdings" style="font-size:10.0pt;"> </font><font size="2" style="font-size:10.0pt;">Pre-commencement communications pursuant to Rule&nbsp;13e-4(c)&nbsp;under the Exchange Act (17 CFR 240.13e-4(c))</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Item 8.01.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Other Events.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In March&nbsp;2013, AmerisourceBergen Corporation (the &#147;Registrant&#148;) committed to a plan to divest AmerisourceBergen Canada Corporation (&#147;ABCC&#148;) due to the challenging economic environment of Canadian pharmaceutical distribution.&#160; As a result of the planned sale of ABCC, the Registrant classified ABCC&#146;s operating results, net of tax, as discontinued operations for all periods presented in its Form&nbsp;10-Q for the period ended March&nbsp;31, 2013.</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Attached as Exhibit&nbsp;99.1 and incorporated by reference into this report, the Registrant has provided unaudited adjusted consolidated Statements of Operations for (a)&nbsp;the fiscal year 2012 quarters ended December&nbsp;31, 2011, March&nbsp;31, 2012, June&nbsp;30, 2012 and September&nbsp;30, 2012, (b)&nbsp;the fiscal year ended September&nbsp;30, 2012, and (c)&nbsp;the fiscal year 2013 quarters ended December&nbsp;31, 2012 and March&nbsp;31, 2013.&#160; Attached as Exhibit&nbsp;99.2 and incorporated by reference into this report, the Registrant has provided unaudited adjusted segment information for (a)&nbsp;the fiscal year 2012 quarters ended December&nbsp;31, 2011, March&nbsp;31, 2012, June&nbsp;30, 2012 and September&nbsp;30, 2012, (b)&nbsp;the fiscal year ended September&nbsp;30, 2012, and (c)&nbsp;the fiscal year 2013 quarters ended December&nbsp;31, 2012 and March&nbsp;31, 2013.</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Item 9.01.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Financial Statements and Exhibits.</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Exhibits.</font></p>
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<p style="margin:0in 0in .0001pt;text-indent:27.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Unaudited adjusted consolidated Statements of Operations for (a)&nbsp;the fiscal year 2012 quarters ended December&nbsp;31, 2011, March&nbsp;31, 2012, June&nbsp;30, 2012 and September&nbsp;30, 2012, (b)&nbsp;the fiscal year ended September&nbsp;30, 2012, and (c)&nbsp;the fiscal year 2013 quarters ended December&nbsp;31, 2012 and March&nbsp;31, 2013.</font></p>
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<p style="margin:0in 0in .0001pt;text-indent:27.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Unaudited adjusted segment information for (a)&nbsp;the fiscal year 2012 quarters ended December&nbsp;31, 2011, March&nbsp;31, 2012, June&nbsp;30, 2012 and September&nbsp;30, 2012, (b)&nbsp;the fiscal year ended September&nbsp;30, 2012, and (c)&nbsp;the fiscal year 2013 quarters ended December&nbsp;31, 2012 and March&nbsp;31, 2013.</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2<a name="PB_2_070714_7056"></a></font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><u><font size="2" face="Times New Roman" style="font-size:10.0pt;">SIGNATURES</font></u></p>
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<p style="margin:0in 0in .0001pt;text-indent:50.6pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">AMERISOURCEBERGEN   CORPORATION</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Date:   May&nbsp;17, 2013</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/   Tim G. Guttman</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Tim   G. Guttman</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Senior   Vice President and Chief Financial Officer</font></p>    </td>   </tr>  </table>
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported):
May 17, 2013
AmerisourceBergen Corporation
(Exact name of Registrant as specified in its charter)
Delaware
1-16671
23-3079390
(State or Other
Commission File Number
(I.R.S. Employer
Jurisdiction of
Identification
Incorporation or
Number)
Organization)
1300 Morris Drive
Chesterbrook, PA
19087
(Address of principal executive offices)
(Zip Code)
Registrant's telephone number, including area code:
(610) 727-7000
N/A
(Former name or former address, if changed since last report.)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (
see
General Instruction A.2. below):
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 8.01.             Other Events.
In March 2013, AmerisourceBergen Corporation (the "Registrant") committed to a plan to divest AmerisourceBergen Canada Corporation ("ABCC") due to the challenging economic environment of Canadian pharmaceutical distribution.  As a result of the planned sale of ABCC, the Registrant classified ABCC's operating results, net of tax, as discontinued operations for all periods presented in its Form 10-Q for the period ended March 31, 2013.
Attached as Exhibit 99.1 and incorporated by reference into this report, the Registrant has provided unaudited adjusted consolidated Statements of Operations for (a) the fiscal year 2012 quarters ended December 31, 2011, March 31, 2012, June 30, 2012 and September 30, 2012, (b) the fiscal year ended September 30, 2012, and (c) the fiscal year 2013 quarters ended December 31, 2012 and March 31, 2013.  Attached as Exhibit 99.2 and incorporated by reference into this report, the Registrant has provided unaudited adjusted segment information for (a) the fiscal year 2012 quarters ended December 31, 2011, March 31, 2012, June 30, 2012 and September 30, 2012, (b) the fiscal year ended September 30, 2012, and (c) the fiscal year 2013 quarters ended December 31, 2012 and March 31, 2013.
Item 9.01.             Financial Statements and Exhibits.
(d)           Exhibits.
99.1            Unaudited adjusted consolidated Statements of Operations for (a) the fiscal year 2012 quarters ended December 31, 2011, March 31, 2012, June 30, 2012 and September 30, 2012, (b) the fiscal year ended September 30, 2012, and (c) the fiscal year 2013 quarters ended December 31, 2012 and March 31, 2013.
99.2            Unaudited adjusted segment information for (a) the fiscal year 2012 quarters ended December 31, 2011, March 31, 2012, June 30, 2012 and September 30, 2012, (b) the fiscal year ended September 30, 2012, and (c) the fiscal year 2013 quarters ended December 31, 2012 and March 31, 2013.
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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
AMERISOURCEBERGEN   CORPORATION
Date:   May 17, 2013
By:
/s/   Tim G. Guttman
Name:
Tim   G. Guttman
Title:
Senior   Vice President and Chief Financial Officer
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