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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;">UNITED STATES</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 AND EXCHANGE COMMISSION</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;">Washington, D.C. 20549</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;">FORM&nbsp;8-K</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></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;">CURRENT REPORT</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></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="3" face="Times New Roman" style="font-size:12.0pt;">Date of Report (Date of earliest event reported): June&nbsp;7, 2013</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">ALEXANDRIA REAL ESTATE EQUITIES,&nbsp;INC.</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">(Exact name of registrant as specified in its charter)</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Maryland</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">1-12993</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">95-4502084</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">(State or other   jurisdiction of<br>   incorporation)</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">(Commission<br>   File Number)</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">(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;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">385 East Colorado   Boulevard, Suite&nbsp;299</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">91101</font></p>    </td>   </tr>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Pasadena,   California</font></p>    </td>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">(Address of   principal executive offices)</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Registrant&#146;s telephone number, including area code:&#160; (626) 578-0777</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">N/A</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">(Former name or former address, if changed since last report)</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">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;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Written   communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR   230.425)</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Soliciting   material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR   240.14a-12)</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Pre-commencement   communications pursuant to Rule&nbsp;14d-2(b)&nbsp;under the Exchange Act (17   CFR 240.14d-2(b))</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Pre-commencement   communications pursuant to Rule&nbsp;13e-4 (c)&nbsp;under the Exchange Act   (17 CFR 240.13e-4 (c))</font></p>    </td>   </tr>  </table>
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<p style="font-size:12.0pt;margin:0in 0in .0001pt;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;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; </font>Entry Into a Material Agreement</b></p>
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<p style="margin:0in 0in .0001pt;text-align:justify;text-indent:24.5pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">On June&nbsp;7, 2013, Alexandria Real Estate Equities,&nbsp;Inc. (the &#147;Company&#148;) issued and sold $500,000,000 aggregate principal amount of its 3.90% Senior Notes due 2023 (the &#147;Notes&#148;) in a registered public offering pursuant to an effective shelf registration statement on Form&nbsp;S-3 on file with the Securities and Exchange Commission.&#160; The Notes are governed by the terms of an Indenture, dated as of February&nbsp;29, 2012 (the &#147;Base Indenture&#148;), by and among the Company, as issuer, Alexandria Real Estate Equities, L.P., as guarantor (the &#147;Guarantor&#148;), and The Bank of New York Mellon Trust Company, N.A., as trustee (the &#147;Trustee&#148;), as supplemented by Supplemental Indenture No.&nbsp;2, dated as of June&nbsp;7, 2013 (the &#147;Supplemental Indenture&#148; and, together with the Base Indenture, the &#147;Indenture&#148;), by and among the Company, the Guarantor and the Trustee.</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;text-indent:24.5pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;text-indent:24.5pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">The Notes bear interest at a rate of 3.90% per year, from and including June&nbsp;7, 2013 or the most recent interest payment date to which interest has been paid, and are payable semi-annually in arrears on June&nbsp;15 and December&nbsp;15 of each year, beginning on December&nbsp;15, 2013.&#160; The Notes mature on June&nbsp;15, 2023 and are fully and unconditionally guaranteed, on a senior basis, by the Guarantor (the &#147;Guarantee&#148;).&#160; The Notes are the unsecured senior obligations of the Company and rank equally with the Company&#146;s existing and future unsecured senior indebtedness.</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;text-indent:24.5pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;text-indent:24.5pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">The Company has the option to redeem all or a part of the Notes at any time or from time to time.&#160; Before March&nbsp;15, 2023, the redemption price for Notes will equal the sum of (i)&nbsp;100% of the principal amount of the Notes being redeemed, (ii)&nbsp;accrued and unpaid interest thereon, if any, to the date of the redemption, and (iii)&nbsp;a make-whole amount.&#160; On or after March&nbsp;15, 2023, the redemption price for the Notes will be equal to the sum of 100% of the principal amount of the Notes being redeemed, plus accrued and unpaid interest thereon, if any, to the date of redemption.</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;text-indent:24.5pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;text-indent:24.5pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">The Indenture contains covenants that, among other things, limit the ability of the Company, the Guarantor and the Company&#146;s subsidiaries to (i)&nbsp;consummate a merger, consolidation or sale of all or substantially all of the Company&#146;s assets and (ii)&nbsp;incur secured or unsecured indebtedness.&#160; These covenants are subject to a number of important exceptions and qualifications.</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;text-indent:24.5pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;text-indent:24.5pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">The Indenture also provides for customary events of default.&#160; In the case of an event of default resulting from certain events of bankruptcy, insolvency or reorganization, the principal of and accrued and unpaid interest, if any, on all outstanding Notes will become due and payable immediately without further action or notice.&#160; If any other event of default under the Indenture occurs and is continuing, the Trustee or holders of not less than 25% in principal amount of the then outstanding Notes may declare all the Notes to be due and payable immediately.</font></p>
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<p style="margin:0in 0in .0001pt;text-align:justify;text-indent:28.0pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">The foregoing descriptions of the Notes and the Indenture do not purport to be complete and are qualified in their entirety by the full text of the Base Indenture, the Supplemental Indenture and the form of the Note and Guarantee, which are filed as Exhibits 4.1, 4.2 and 4.3, respectively, to this Current Report on Form&nbsp;8-K and are incorporated herein by reference.</font></p>
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<p style="margin:0in 0in .0001pt;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Item 2.03</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;text-align:justify;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Creation of a Direct Financial   Obligation or an Obligation under an Off-Balance Sheet Arrangement of a   Registrant</font></b></p>    </td>   </tr>  </table>
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<p style="margin:0in 0in .0001pt;text-align:justify;text-indent:.5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">The information provided in Item 1.01 of this Current Report on Form&nbsp;8-K pertaining to the Notes and the Indenture is incorporated by reference into this Item 2.03.</font></p>
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<p style="margin:0in 0in .0001pt;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Item 9.01</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">Financial Statements and Exhibits</font></b></p>    </td>   </tr>  </table>
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<p style="font-size:12.0pt;margin:0in 0in .0001pt;text-indent:3.0pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">(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; </font>Exhibits</p>
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<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">4.1</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Indenture, dated   as of February&nbsp;29, 2012, among Alexandria Real Estate   Equities,&nbsp;Inc., Alexandria Real Estate Equities, L.P. and The Bank of   New York Mellon Trust Company, N.A., as trustee (filed as Exhibit&nbsp;4.1 to   the Company&#146;s current report on Form&nbsp;8-K filed with the Securities and   Exchange Commission on February&nbsp;29, 2012, and incorporated herein by   reference).</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">4.2</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Supplemental   Indenture No.&nbsp;2, dated as of June&nbsp;7, 2013, by and among Alexandria   Real Estate Equities,&nbsp;Inc., Alexandria Real Estate Equities, L.P. and   The Bank of New York Mellon Trust Company, N.A., as trustee.</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">4.3</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Form&nbsp;of   3.90% Senior Note due 2023 (included in Exhibit&nbsp;4.2 above).</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">5.1</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Opinion of   Venable LLP.</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">5.2</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Opinion of   Morrison&nbsp;&amp; Foerster LLP.</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">8.1</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Tax Opinion of   Morrison&nbsp;&amp; Foerster LLP.</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">23.1</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Consent of Venable   LLP (included in opinion filed as Exhibit&nbsp;5.1).</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">23.2</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Consent of   Morrison&nbsp;&amp; Foerster LLP (included in opinion filed as   Exhibit&nbsp;5.2).</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt .5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">23.3</font></p>    </td>
<td width="86%" valign="bottom" style="padding:0in 0in 0in 0in;width:86.66%;">
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Consent of   Morrison&nbsp;&amp; Foerster LLP (included in opinion filed as   Exhibit&nbsp;8.1).</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
</div>
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<div>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><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;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">SIGNATURES</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">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>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="55%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:55.56%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">ALEXANDRIA REAL ESTATE   EQUITIES,&nbsp;INC.</font></p>    </td>   </tr>
<tr>
<td width="44%" valign="top" style="padding:0in 0in 0in 0in;width:44.44%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.66%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="35%" valign="top" style="padding:0in 0in 0in 0in;width:35.56%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>   </tr>
<tr>
<td width="44%" valign="top" style="padding:0in 0in 0in 0in;width:44.44%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.66%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
<td width="35%" valign="top" style="padding:0in 0in 0in 0in;width:35.56%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>   </tr>
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<td width="44%" valign="top" style="padding:0in 0in 0in 0in;width:44.44%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Date:&nbsp;&nbsp;&nbsp;June&nbsp;7,   2013</font></p>    </td>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.66%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">By:</font></p>    </td>
<td width="35%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:35.56%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">/s/ Dean A. Shigenaga</font></p>    </td>   </tr>
<tr>
<td width="44%" valign="top" style="padding:0in 0in 0in 0in;width:44.44%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.66%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="35%" valign="top" style="padding:0in 0in 0in 0in;width:35.56%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Dean A. Shigenaga</font></p>    </td>   </tr>
<tr>
<td width="44%" valign="top" style="padding:0in 0in 0in 0in;width:44.44%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="13%" valign="top" style="padding:0in 0in 0in 0in;width:13.34%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.66%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="35%" valign="top" style="padding:0in 0in 0in 0in;width:35.56%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Chief Financial Officer</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt;text-indent:3.0in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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[{"type": "8-K", "sequence": "1", "filename": "a13-13354_68k.htm", "description": "8-K", "secsgml_size_bytes": 37886}]
{"company-data": {"conformed-name": "ALEXANDRIA REAL ESTATE EQUITIES INC", "cik": "0001035443", "assigned-sic": "6798", "irs-number": "954502084", "state-of-incorporation": "MD", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-12993", "film-number": "13900775"}, "business-address": {"street1": "385 E. COLORADO BLVD", "street2": "SUITE 299", "city": "PASADENA", "state": "CA", "zip": "91101", "phone": "6265780777"}, "mail-address": {"street1": "385 E. COLORADO BLVD", "street2": "SUITE 299", "city": "PASADENA", "state": "CA", "zip": "91101"}}
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 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): June 7, 2013
ALEXANDRIA REAL ESTATE EQUITIES, INC.
(Exact name of registrant as specified in its charter)
Maryland
1-12993
95-4502084
(State or other   jurisdiction of
incorporation)
(Commission
File Number)
(I.R.S. Employer
Identification No.)
385 East Colorado   Boulevard, Suite 299
91101
Pasadena,   California
(Address of   principal executive offices)
(Zip Code)
Registrant's telephone number, including area code:  (626) 578-0777
- - - - - - - - - - - - - - - - - - - -
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:
[  ]
Written   communications pursuant to Rule 425 under the Securities Act (17 CFR   230.425)
[  ]
Soliciting   material pursuant to Rule 14a-12 under the Exchange Act (17 CFR   240.14a-12)
[  ]
Pre-commencement   communications pursuant to Rule 14d-2(b) under the Exchange Act (17   CFR 240.14d-2(b))
[  ]
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 Agreement
On June 7, 2013, Alexandria Real Estate Equities, Inc. (the "Company") issued and sold $500,000,000 aggregate principal amount of its 3.90% Senior Notes due 2023 (the "Notes") in a registered public offering pursuant to an effective shelf registration statement on Form S-3 on file with the Securities and Exchange Commission.  The Notes are governed by the terms of an Indenture, dated as of February 29, 2012 (the "Base Indenture"), by and among the Company, as issuer, Alexandria Real Estate Equities, L.P., as guarantor (the "Guarantor"), and The Bank of New York Mellon Trust Company, N.A., as trustee (the "Trustee"), as supplemented by Supplemental Indenture No. 2, dated as of June 7, 2013 (the "Supplemental Indenture" and, together with the Base Indenture, the "Indenture"), by and among the Company, the Guarantor and the Trustee.
The Notes bear interest at a rate of 3.90% per year, from and including June 7, 2013 or the most recent interest payment date to which interest has been paid, and are payable semi-annually in arrears on June 15 and December 15 of each year, beginning on December 15, 2013.  The Notes mature on June 15, 2023 and are fully and unconditionally guaranteed, on a senior basis, by the Guarantor (the "Guarantee").  The Notes are the unsecured senior obligations of the Company and rank equally with the Company's existing and future unsecured senior indebtedness.
The Company has the option to redeem all or a part of the Notes at any time or from time to time.  Before March 15, 2023, the redemption price for Notes will equal the sum of (i) 100% of the principal amount of the Notes being redeemed, (ii) accrued and unpaid interest thereon, if any, to the date of the redemption, and (iii) a make-whole amount.  On or after March 15, 2023, the redemption price for the Notes will be equal to the sum of 100% of the principal amount of the Notes being redeemed, plus accrued and unpaid interest thereon, if any, to the date of redemption.
The Indenture contains covenants that, among other things, limit the ability of the Company, the Guarantor and the Company's subsidiaries to (i) consummate a merger, consolidation or sale of all or substantially all of the Company's assets and (ii) incur secured or unsecured indebtedness.  These covenants are subject to a number of important exceptions and qualifications.
The Indenture also provides for customary events of default.  In the case of an event of default resulting from certain events of bankruptcy, insolvency or reorganization, the principal of and accrued and unpaid interest, if any, on all outstanding Notes will become due and payable immediately without further action or notice.  If any other event of default under the Indenture occurs and is continuing, the Trustee or holders of not less than 25% in principal amount of the then outstanding Notes may declare all the Notes to be due and payable immediately.
The foregoing descriptions of the Notes and the Indenture do not purport to be complete and are qualified in their entirety by the full text of the Base Indenture, the Supplemental Indenture and the form of the Note and Guarantee, which are filed as Exhibits 4.1, 4.2 and 4.3, respectively, to this Current Report on Form 8-K and are incorporated herein by reference.
Item 2.03
Creation of a Direct Financial   Obligation or an Obligation under an Off-Balance Sheet Arrangement of a   Registrant
The information provided in Item 1.01 of this Current Report on Form 8-K pertaining to the Notes and the Indenture is incorporated by reference into this Item 2.03.
Item 9.01
Financial Statements and Exhibits
(d)
Exhibits
4.1
Indenture, dated   as of February 29, 2012, among Alexandria Real Estate   Equities, Inc., Alexandria Real Estate Equities, L.P. and The Bank of   New York Mellon Trust Company, N.A., as trustee (filed as Exhibit 4.1 to   the Company's current report on Form 8-K filed with the Securities and   Exchange Commission on February 29, 2012, and incorporated herein by   reference).
4.2
Supplemental   Indenture No. 2, dated as of June 7, 2013, by and among Alexandria   Real Estate Equities, Inc., Alexandria Real Estate Equities, L.P. and   The Bank of New York Mellon Trust Company, N.A., as trustee.
4.3
Form of   3.90% Senior Note due 2023 (included in Exhibit 4.2 above).
5.1
Opinion of   Venable LLP.
5.2
Opinion of   Morrison & Foerster LLP.
8.1
Tax Opinion of   Morrison & Foerster LLP.
23.1
Consent of Venable   LLP (included in opinion filed as Exhibit 5.1).
23.2
Consent of   Morrison & Foerster LLP (included in opinion filed as   Exhibit 5.2).
23.3
Consent of   Morrison & Foerster LLP (included in opinion filed as   Exhibit 8.1).
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.
ALEXANDRIA REAL ESTATE   EQUITIES, INC.
Date:   June 7,   2013
By:
/s/ Dean A. Shigenaga
Dean A. Shigenaga
Chief Financial Officer