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<p style="text-align:center;margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:18pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">UNITED STATES</p>
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<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:18pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">FORM 8-K </p>
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<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:12pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">CURRENT REPORT </p>
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:12pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 </p>
<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:12pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Date of Report (Date of earliest event reported):&nbsp;&nbsp;June 15, 2018 </p>
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<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:24pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">bluebird bio, Inc.</p>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;">&nbsp;</p></td>
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<p style="line-height:2pt;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(Zip Code)</p></td>
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<p style="text-align:center;margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Registrant&#8217;s Telephone Number, Including Area Code: (339) 499-9300 </p>
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<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:7.5pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">(Former Name or Former Address, if Changed Since Last Report) </p>
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<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;">&nbsp;</p>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">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 Instructions A.2. below): </p>
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<p style="margin-bottom:0pt;margin-top:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) </p></td></tr></table></div>
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<p style="margin-bottom:0pt;margin-top:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) </p></td></tr></table></div>
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<p style="margin-bottom:0pt;margin-top:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) </p></td></tr></table></div>
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<p style="margin-bottom:0pt;margin-top:0pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:10pt;">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) </p></td></tr></table></div>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Indicate by check mark whether the registrant is an emerging growth company as defined in as defined in Rule 405 of the Securities Act of 1933 (&#167;&#8201;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;&#8201;240.12b-2 of this chapter).</p>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Emerging growth company&#160;<font style="font-family:'Times New Roman';"><font style="font-size:10pt;font-family:'Times New Roman'">&#9744;</font></font></p>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.&#160;<font style="font-family:'Times New Roman';"><font style="font-size:10pt;font-family:'Times New Roman'">&#9744;</font></font><br /></p>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;"><a name="_AEIOULastRenderedPageBreakAEIOU2"></a><font style="font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Item&#160;7.01</font></p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Regulation FD Disclosure.</p></td>
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<p style="margin-top:6pt;margin-bottom:0pt;text-indent:7.69%;color:#000000;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">On June 15, 2018, bluebird bio, Inc. (&#8220;bluebird&#8221;) will conduct an investor webcast summarizing clinical data from the Northstar (HGB-204), Northstar-2 (HGB-207) and HGB-206 clinical studies of its LentiGlobin product candidate being presented at the 23<sup style="font-size:85%; vertical-align:top">rd</sup> Congress of the European Hematology Association in Stockholm, Sweden.&nbsp;&nbsp;A copy of the presentation is furnished to this report as Exhibit 99.1. </p>
<p style="margin-top:6pt;margin-bottom:0pt;text-indent:7.69%;color:#000000;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The information in Item 7.01 of this Current Report on Form 8-K and Exhibit 99.1 attached hereto is intended to be furnished and shall not be deemed &#8220;filed&#8221; for purposes of Section 18 of the Securities Exchange Act of 1934 (the &#8220;Exchange Act&#8221;) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such filing.</p>
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;;font-size:10pt;">&nbsp;</p>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Item&#160;8.01</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Other Events. </p></td>
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<p style="margin-top:6pt;margin-bottom:0pt;text-indent:7.69%;color:#000000;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">On June 15, 2018, bluebird issued two press releases announcing updated clinical data being presented at the 23<sup style="font-size:85%; vertical-align:top">r</sup><sup style="font-size:85%; vertical-align:top">d</sup> Congress of the European Hematology Association in Stockholm, Sweden from the Northstar (HGB-204) and Northstar-2 (HGB-207) clinical studies of its LentiGlobin product candidate in patients with transfusion-dependent &#946;-thalassemia, and the HGB-206 clinical study of its LentiGlobin product candidate in patients with severe sickle cell disease. </p>
<p style="margin-top:6pt;margin-bottom:0pt;text-indent:7.69%;color:#000000;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The full text of bluebird&#8217;s press releases regarding the announcements are filed as Exhibits 99.2 and 99.3 to this Current Report on Form 8-K and are incorporated herein by reference.&nbsp;&nbsp;</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:14pt;">&nbsp;</p>
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<p style="margin-top:6pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">(d) Exhibits </p>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:-5.55pt;;text-indent:0pt;;font-weight:bold;font-size:9pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Description</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:-5.4pt;;text-indent:0pt;;font-size:9pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">99.1</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:9pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:-5.55pt;;text-indent:0pt;;font-size:9pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><a href="blue-ex991_26.htm"><font style="text-decoration:underline;">Investor presentation provided by bluebird bio, Inc. on June 15, 2018</font></a>.</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:-5.4pt;;text-indent:0pt;;font-size:9pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">99.2</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:9pt;">&nbsp;</p></td>
<td valign="top" >
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:-5.55pt;;text-indent:0pt;;font-size:9pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><a href="blue-ex992_25.htm"><font style="text-decoration:underline;">Press release issued by bluebird bio, Inc. on June 15, 2018</font></a>.</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:-5.4pt;;text-indent:0pt;;font-size:9pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">99.3</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:9pt;">&nbsp;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:-5.55pt;;text-indent:0pt;;font-size:9pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"><a href="blue-ex993_24.htm"><font style="text-decoration:underline;">Press release issued by bluebird bio, Inc. on June 15, 2018</font></a>.</p></td>
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</table></div>
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;;font-size:10pt;">&nbsp;</p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;"><br /></p>
<p style="margin-top:12pt;margin-bottom:0pt;text-indent:0%;font-family:Times New Roman;font-size:11pt;">&nbsp;</p>
<hr style="page-break-after:always;width:100%;">
<p style="text-align:center;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;"><a name="_AEIOULastRenderedPageBreakAEIOU3"></a><font style="font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">SIGNATURES</font></p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:7.69%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">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. </p>
<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:10pt;">&nbsp;</p>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<td valign="top"  style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Date:&nbsp;&nbsp;June 15, 2018</p></td>
<td colspan="3" valign="middle"  style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">bluebird bio, Inc.</p>
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;"><br />&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="top"  style="width:auto; border-bottom:solid 0.75pt transparent;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">By: </p></td>
<td colspan="2" valign="middle"  style="width:auto; border-bottom:solid 0.75pt #000000;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">/s/ Jason F. Cole</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td valign="middle"  style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td colspan="2" valign="middle"  style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Jason F. Cole</p></td>
<td valign="middle"  style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
<td colspan="2" valign="middle"  style="width:auto;">
<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-style:italic;font-size:10pt;font-family:Times New Roman;font-weight:normal;text-transform:none;font-variant: normal;">Chief Legal Officer</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;margin-left:0pt;;text-indent:0pt;;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">&#160;</p></td>
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<p style="margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-family:Times New Roman;font-size:11pt;">&nbsp;</p>
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blue-8k_20180615.htm
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 15, 2018
bluebird bio, Inc.
(Exact name of Registrant as Specified in Its Charter)
DELAWARE
001-35966
13-3680878
(State or Other Jurisdiction
of Incorporation)
(Commission File Number)
(IRS Employer
Identification No.)
60 Binney Street,
Cambridge, MA
02142
(Address of Principal Executive Offices)
(Zip Code)
Registrant's Telephone Number, Including Area Code: (339) 499-9300
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 (see General Instructions A.2. below):
☐
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))
Indicate by check mark whether the registrant is an emerging growth company as defined in as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
Emerging growth company
☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
☐
Item 7.01
Regulation FD Disclosure.
On June 15, 2018, bluebird bio, Inc. ("bluebird") will conduct an investor webcast summarizing clinical data from the Northstar (HGB-204), Northstar-2 (HGB-207) and HGB-206 clinical studies of its LentiGlobin product candidate being presented at the 23
rd
Congress of the European Hematology Association in Stockholm, Sweden.  A copy of the presentation is furnished to this report as Exhibit 99.1.
The information in Item 7.01 of this Current Report on Form 8-K and Exhibit 99.1 attached hereto is intended to be furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934 (the "Exchange Act") or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such filing.
Item 8.01
Other Events.
On June 15, 2018, bluebird issued two press releases announcing updated clinical data being presented at the 23
r
d
Congress of the European Hematology Association in Stockholm, Sweden from the Northstar (HGB-204) and Northstar-2 (HGB-207) clinical studies of its LentiGlobin product candidate in patients with transfusion-dependent β-thalassemia, and the HGB-206 clinical study of its LentiGlobin product candidate in patients with severe sickle cell disease.
The full text of bluebird's press releases regarding the announcements are filed as Exhibits 99.2 and 99.3 to this Current Report on Form 8-K and are incorporated herein by reference.
Item 9.01
Financial Statements and Exhibits.
(d) Exhibits
Exhibit No
.
Description
99.1
Investor presentation provided by bluebird bio, Inc. on June 15, 2018
.
99.2
Press release issued by bluebird bio, Inc. on June 15, 2018
.
99.3
Press release issued by bluebird bio, Inc. on June 15, 2018
.
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.
Date:  June 15, 2018
bluebird bio, Inc.
By:
/s/ Jason F. Cole
Jason F. Cole
Chief Legal Officer