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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</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;">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):&#160; <b>September&nbsp;19, 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;">Auxilium Pharmaceuticals,&nbsp;Inc.</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 Specified in 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;">000-50855</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;">23-3016883</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<br>   Jurisdiction of<br>   Incorporation)</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<br>   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<br>   Identification No.)</font></p>    </td>   </tr>  </table>
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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;">640 Lee Road</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 align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of Principal Executive Offices)</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;">Registrant&#146;s telephone number, including area code:&#160;&#160; <b>(484) 321-5900</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;">Not Applicable</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:</font></p>
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<p style="margin:0in 0in .0001pt .5in;text-indent:-.25in;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </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 .5in;text-indent:-.25in;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </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 .5in;text-indent:-.25in;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </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 .5in;text-indent:-.25in;"><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </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 .5in;text-indent:-.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 1.01</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Entry into a Material Definitive Agreement.</font></b></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">As previously reported on the Current Report on Form&nbsp;8-K filed by Auxilium Pharmaceuticals,&nbsp;Inc. (&#147;Auxilium&#148; or the &#147;Company&#148;) with the U.S. Securities and Exchange Commission (the &#147;SEC&#148;) on April&nbsp;29, 2013, the Company and its existing domestic subsidiaries entered into a Credit Agreement and related security and other agreements on April&nbsp;26, 2013 with Morgan Stanley Senior Funding,&nbsp;Inc. (&#147;MSSF&#148;) providing for a $225,000,000 senior secured term loan (the &#147;Existing Term Loan&#148;), and an amendment thereto, as previously reported on the Current Report on Form&nbsp;8-K filed by the Company with the SEC on June&nbsp;13, 2013 (as amended through the date hereof, the &#147;Credit Agreement&#148;).</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On September&nbsp;19, 2013, the Company and its existing domestic subsidiaries entered into an Incremental Assumption Agreement (the &#147;Agreement&#148;) with MSSF pursuant to and under the Credit Agreement providing for a $50,000,000 senior secured term loan (the &#147;Term Loan&#148;) to be used by the Company for general corporate purposes (including without limitation the potential acquisition (including by merger, purchase, license or otherwise) of businesses, products, product rights or technologies).&#160; The Term Loan is in addition to the Existing Term Loan previously extended to the Company under the Credit Agreement.&#160; The Term Loan is on terms and conditions consistent with those set forth in the Credit Agreement and the Agreement, including interest rates equal to the base rate or LIBOR rate, at the election of the Company, plus a margin of 4.00% for base rate loans and 5.00% for LIBOR rate loans.</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The Agreement is attached hereto as Exhibit&nbsp;10.1 and is incorporated herein by reference.&#160; The foregoing description of the Agreement is qualified in its entirety by reference to the full text of the Agreement.</font></p>
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<p style="margin:0in 0in .0001pt .5in;text-indent:-.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 7.01</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Regulation FD Disclosure.</font></b></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On September&nbsp;20, 2013, the Company issued a press release announcing the Company&#146;s entry into the Agreement with MSSF.</font></p>
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<p style="margin:0in 0in .0001pt .5in;text-indent:-.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 9.01</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Financial Statements and Exhibits.</font></b></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">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;">Incremental   Assumption Agreement dated September&nbsp;19, 2013, by and among Auxilium   Pharmaceuticals,&nbsp;Inc., as borrower, and its existing domestic   subsidiaries, as guarantors, the incremental term loan lenders from time to   time party thereto and Morgan Stanley Senior Funding,&nbsp;Inc. as   administrative agent, and as sole lead arranger and bookrunner</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;">Press   Release, dated September&nbsp;20, 2013, issued by Auxilium   Pharmaceuticals,&nbsp;Inc.</font></p>    </td>   </tr>  </table>
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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;">SIGNATURE</font></b></p>
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<p style="margin:0in 0in .0001pt;text-indent:.5in;"><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;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">AUXILIUM   PHARMACEUTICALS,&nbsp;INC.</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;">Date:   September&nbsp;20, 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;">/s/   Andrew I. Koven</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;">Andrew   I. Koven</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;">Chief   Administrative Officer and General Counsel</font></p>    </td>   </tr>  </table>
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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;">3<a name="PB_3_181344_5335"></a></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;">EXHIBIT&nbsp;INDEX</font></b></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.1</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;">Incremental   Assumption Agreement dated September&nbsp;19, 2013, by and among Auxilium   Pharmaceuticals,&nbsp;Inc., as borrower, and its existing domestic   subsidiaries, as guarantors, the incremental term loan lenders from time to   time party thereto and Morgan Stanley Senior Funding,&nbsp;Inc. as   administrative agent, and as sole lead arranger and bookrunner</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;">99.1</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;">Press   Release, dated September&nbsp;20, 2013, issued by Auxilium   Pharmaceuticals,&nbsp;Inc.</font></p>    </td>   </tr>  </table>
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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;">4<a name="PB_4_181502_5796"></a></font></p>
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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):
September 19, 2013
Auxilium Pharmaceuticals, Inc.
(Exact Name of Registrant Specified in Charter)
Delaware
000-50855
23-3016883
(State or Other
Jurisdiction of
Incorporation)
(Commission File
Number)
(I.R.S. Employer
Identification No.)
640 Lee Road
Chesterbrook, PA
19087
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number, including area code:
(484) 321-5900
Not Applicable
(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:
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 1.01
Entry into a Material Definitive Agreement.
As previously reported on the Current Report on Form 8-K filed by Auxilium Pharmaceuticals, Inc. ("Auxilium" or the "Company") with the U.S. Securities and Exchange Commission (the "SEC") on April 29, 2013, the Company and its existing domestic subsidiaries entered into a Credit Agreement and related security and other agreements on April 26, 2013 with Morgan Stanley Senior Funding, Inc. ("MSSF") providing for a $225,000,000 senior secured term loan (the "Existing Term Loan"), and an amendment thereto, as previously reported on the Current Report on Form 8-K filed by the Company with the SEC on June 13, 2013 (as amended through the date hereof, the "Credit Agreement").
On September 19, 2013, the Company and its existing domestic subsidiaries entered into an Incremental Assumption Agreement (the "Agreement") with MSSF pursuant to and under the Credit Agreement providing for a $50,000,000 senior secured term loan (the "Term Loan") to be used by the Company for general corporate purposes (including without limitation the potential acquisition (including by merger, purchase, license or otherwise) of businesses, products, product rights or technologies).  The Term Loan is in addition to the Existing Term Loan previously extended to the Company under the Credit Agreement.  The Term Loan is on terms and conditions consistent with those set forth in the Credit Agreement and the Agreement, including interest rates equal to the base rate or LIBOR rate, at the election of the Company, plus a margin of 4.00% for base rate loans and 5.00% for LIBOR rate loans.
The Agreement is attached hereto as Exhibit 10.1 and is incorporated herein by reference.  The foregoing description of the Agreement is qualified in its entirety by reference to the full text of the Agreement.
Item 7.01
Regulation FD Disclosure.
On September 20, 2013, the Company issued a press release announcing the Company's entry into the Agreement with MSSF.
Item 9.01
Financial Statements and Exhibits.
(d)
Exhibits.
10.1
Incremental   Assumption Agreement dated September 19, 2013, by and among Auxilium   Pharmaceuticals, Inc., as borrower, and its existing domestic   subsidiaries, as guarantors, the incremental term loan lenders from time to   time party thereto and Morgan Stanley Senior Funding, Inc. as   administrative agent, and as sole lead arranger and bookrunner
99.1
Press   Release, dated September 20, 2013, issued by Auxilium   Pharmaceuticals, Inc.
2
SIGNATURE
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.
AUXILIUM   PHARMACEUTICALS, INC.
Date:   September 20, 2013
By:
/s/   Andrew I. Koven
Andrew   I. Koven
Chief   Administrative Officer and General Counsel
3
EXHIBIT INDEX
10.1
Incremental   Assumption Agreement dated September 19, 2013, by and among Auxilium   Pharmaceuticals, Inc., as borrower, and its existing domestic   subsidiaries, as guarantors, the incremental term loan lenders from time to   time party thereto and Morgan Stanley Senior Funding, Inc. as   administrative agent, and as sole lead arranger and bookrunner
99.1
Press   Release, dated September 20, 2013, issued by Auxilium   Pharmaceuticals, Inc.
4