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<title>biib-20250707</title></head><body><div style="display:none"><ix:header><ix:hidden><ix:nonNumeric contextRef="c-1" name="dei:EntityCentralIndexKey" id="f-21">0000875045</ix:nonNumeric><ix:nonNumeric contextRef="c-1" name="dei:AmendmentFlag" id="f-22">false</ix:nonNumeric></ix:hidden><ix:references xml:lang="en-US"><link:schemaRef xlink:type="simple" xlink:href="biib-20250707.xsd"/></ix:references><ix:resources><xbrli:context id="c-1"><xbrli:entity><xbrli:identifier scheme="http://www.sec.gov/CIK">0000875045</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2025-07-07</xbrli:startDate><xbrli:endDate>2025-07-07</xbrli:endDate></xbrli:period></xbrli:context></ix:resources></ix:header></div><div id="ia22ab1d835ca499face9a626527c88ee_1"></div><div style="min-height:42.75pt;width:100%"><div><span><br/></span></div></div><div style="-sec-extract:summary;text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:14pt;font-weight:700;line-height:120%">UNITED STATES</span></div><div style="text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:14pt;font-weight:700;line-height:120%">SECURITIES AND EXCHANGE COMMISSION</span></div><div style="text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:12pt;font-weight:700;line-height:120%">Washington, D.C. 20549</span></div><div style="text-align:center"><span><br/></span></div><div style="text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:18pt;font-weight:700;line-height:120%">FORM <ix:nonNumeric contextRef="c-1" name="dei:DocumentType" id="f-1">8-K</ix:nonNumeric> </span></div><div style="text-align:center"><span><br/></span></div><div style="text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:12pt;font-weight:700;line-height:120%">CURRENT REPORT</span></div><div style="text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:12pt;font-weight:700;line-height:120%">Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934</span></div><div style="text-align:center"><span><br/></span></div><div style="text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:12pt;font-weight:400;line-height:120%">Date of Report (Date of earliest event reported):  </span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:12pt;font-weight:700;line-height:120%"><ix:nonNumeric contextRef="c-1" name="dei:DocumentPeriodEndDate" format="ixt:date-monthname-day-year-en" id="f-2">July 7, 2025</ix:nonNumeric></span></div><div style="text-align:center"><img src="biib-20250707_g1.jpg" alt="New Biogen Logo.jpg" style="height:39px;margin-bottom:5pt;vertical-align:text-bottom;width:118px" id="i-1"/></div><div style="margin-bottom:5pt;margin-top:5pt;text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:24pt;font-weight:700;line-height:120%"><ix:nonNumeric contextRef="c-1" name="dei:EntityRegistrantName" id="f-3">Biogen Inc.</ix:nonNumeric></span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:16pt;font-weight:700;line-height:120%"> </span></div><div style="margin-bottom:5pt;margin-top:5pt;text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:8pt;font-style:italic;font-weight:400;line-height:120%">(Exact name of registrant as specified in its charter) </span></div><div style="margin-top:5pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:94.590%"><tr><td style="width:1.0%"/><td 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style="text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:700;line-height:120%"><ix:nonNumeric contextRef="c-1" name="dei:EntityAddressAddressLine1" id="f-7">225 Binney Street</ix:nonNumeric>, <ix:nonNumeric contextRef="c-1" name="dei:EntityAddressCityOrTown" id="f-8">Cambridge</ix:nonNumeric>, <ix:nonNumeric contextRef="c-1" name="dei:EntityAddressStateOrProvince" format="ixt-sec:stateprovnameen" id="f-9">Massachusetts</ix:nonNumeric> </span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%"><ix:nonNumeric contextRef="c-1" name="dei:EntityAddressPostalZipCode" id="f-10">02142</ix:nonNumeric></span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:700;line-height:120%"> </span></div><div style="text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:8pt;font-weight:400;line-height:120%">(Address of principal executive offices; Zip Code)</span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#160;&#160;&#160;&#160;</span></div><div style="margin-bottom:5pt;margin-top:5pt;text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Registrant&#8217;s telephone number, including area code:  </span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:700;line-height:120%">(<ix:nonNumeric contextRef="c-1" name="dei:CityAreaCode" id="f-11">617</ix:nonNumeric>) <ix:nonNumeric contextRef="c-1" name="dei:LocalPhoneNumber" id="f-12">679-2000</ix:nonNumeric></span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div style="text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Not Applicable</span></div><div style="text-align:center"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:8pt;font-weight:400;line-height:120%">(Former name or former address, if changed since last report.)</span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">&#160;&#160;&#160;&#160;</span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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:</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Arial Unicode MS',sans-serif;font-size:12pt;font-weight:400;line-height:120%"><ix:nonNumeric contextRef="c-1" name="dei:WrittenCommunications" format="ixt-sec:boolballotbox" id="f-13">&#9744;</ix:nonNumeric></span><span style="color:#000000;font-family:'Wingdings',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</span></div><div><span style="color:#000000;font-family:'Arial Unicode MS',sans-serif;font-size:12pt;font-weight:400;line-height:120%"><ix:nonNumeric contextRef="c-1" name="dei:SolicitingMaterial" format="ixt-sec:boolballotbox" id="f-14">&#9744;</ix:nonNumeric></span><span style="color:#000000;font-family:'Wingdings',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</span></div><div><span style="color:#000000;font-family:'Arial Unicode MS',sans-serif;font-size:12pt;font-weight:400;line-height:120%"><ix:nonNumeric contextRef="c-1" name="dei:PreCommencementTenderOffer" format="ixt-sec:boolballotbox" id="f-15">&#9744;</ix:nonNumeric></span><span style="color:#000000;font-family:'Wingdings',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</span></div><div><span style="color:#000000;font-family:'Arial Unicode MS',sans-serif;font-size:12pt;font-weight:400;line-height:120%"><ix:nonNumeric contextRef="c-1" name="dei:PreCommencementIssuerTenderOffer" format="ixt-sec:boolballotbox" id="f-16">&#9744;</ix:nonNumeric></span><span style="color:#000000;font-family:'Wingdings',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:112%">Securities registered pursuant to Section 12(b) of the Act:</span></div><div style="margin-top:5pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.707%"><tr><td style="width:1.0%"/><td style="width:31.744%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.533%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:31.744%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.533%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:31.746%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Title of each class</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Trading Symbol(s)</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Name of each exchange on which registered</span></td></tr><tr><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:700;line-height:100%"><ix:nonNumeric contextRef="c-1" name="dei:Security12bTitle" id="f-17">Common Stock, $0.0005 par value</ix:nonNumeric></span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:700;line-height:100%"><ix:nonNumeric contextRef="c-1" name="dei:TradingSymbol" id="f-18">BIIB</ix:nonNumeric></span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:700;line-height:100%"><ix:nonNumeric contextRef="c-1" name="dei:SecurityExchangeName" format="ixt-sec:exchnameen" id="f-19">The Nasdaq Global Select Market</ix:nonNumeric></span></td></tr></table></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;240.12b-2 of this chapter). </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Arial Unicode MS',sans-serif;font-size:12pt;font-weight:400;line-height:120%"><ix:nonNumeric contextRef="c-1" name="dei:EntityEmergingGrowthCompany" format="ixt-sec:boolballotbox" id="f-20">&#9744;</ix:nonNumeric></span><span style="color:#000000;font-family:'Wingdings',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Emerging growth company  </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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.  </span><span style="color:#000000;font-family:'Arial Unicode MS',sans-serif;font-size:12pt;font-weight:400;line-height:120%">&#9744;</span></div><div><span><br/></span></div><div><span><br/></span></div><div style="height:42.75pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="text-align:center"><span><br/></span></div></div></div><div id="ia22ab1d835ca499face9a626527c88ee_7"></div><hr style="page-break-after:always"/><div style="min-height:42.75pt;width:100%"><div><span><br/></span></div></div><div style="-sec-extract:summary"><span style="color:#1c5a7d;font-family:'Franklin Gothic Book',sans-serif;font-size:12pt;font-weight:700;line-height:120%">Item&#160;2.02 &#160;&#160;&#160;&#160;Results of Operations and Financial Condition</span></div><div style="margin-top:9pt"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Biogen Inc. (Biogen) expects that its GAAP and non-GAAP results for the second quarter of 2025 will include acquired in-process research and development, upfront and milestone expense of approximately $46&#160;million on a pre-tax basis. The estimated charge is expected to impact GAAP and non-GAAP net income per diluted share for the second quarter 2025 by approximately ($0.26) per share.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">During the first quarter of 2025 we began presenting acquired in-process research and development, upfront and milestone expense as a separate line item in our condensed consolidated statements of income. Acquired in-process research and development, upfront and milestone expense includes costs incurred in connection with collaboration and license agreements such as upfront and milestone payments and, when applicable, premiums on equity securities and asset acquisitions of acquired in-process research and development. Biogen does not forecast such acquired in-process research and development, upfront and milestone expense due to the uncertainty of the future occurrence, magnitude, and timing of these transactions in any given period.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Results for the quarter ended June 30, 2025, have not been finalized and are subject to our financial statement closing procedures. There can be no assurance that our final results will not differ from the preliminary unaudited estimates described herein.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Note Regarding Forward-Looking Statements </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">This Current Report on Form 8-K contains forward-looking statements relating to our financial and operating results and financial guidance, that are being made pursuant to the provisions of the Private Securities Litigation Reform Act of 1995 (the PSLRA) with the intention of obtaining the benefits of the &#8220;Safe Harbor&#8221; provisions of the PSLRA. These forward-looking statements may be accompanied by such words as &#8220;aim,&#8221; &#8220;anticipate,&#8221; "assume," &#8220;believe,&#8221; &#8220;contemplate,&#8221; &#8220;continue," "could," &#8220;estimate,&#8221; &#8220;expect,&#8221; &#8220;forecast,&#8221; &#8220;goal,&#8221; &#8220;guidance,&#8221; &#8220;hope,&#8221; &#8220;intend,&#8221; &#8220;may,&#8221; &#8220;objective,&#8221; "outlook," &#8220;plan,&#8221; &#8220;possible,&#8221; "potential," &#8220;predict,&#8221; &#8220;project,&#8221; &#8220;should,&#8221; &#8220;target,&#8221; &#8220;will,&#8221; &#8220;would&#8221; or the negative of these words or other words and terms of similar meaning. </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Given their forward-looking nature, these statements involve substantial risks and uncertainties and may be based on inaccurate assumptions and could cause actual results to differ materially from those reflected in such statements. The information above includes, among others, forward-looking statements reflecting management&#8217;s current intentions and expectations for the future with respect to Biogen&#8217;s estimated acquired in-process research and development, upfront and milestone expense for the quarter ended June 30, 2025, and the related impact to Biogen&#8217;s GAAP and non-GAAP earnings per share for such period. These forward-looking statements are based on management's current beliefs and assumptions and on information currently available to management. Given their nature, we cannot assure that any outcome expressed in these forward-looking statements will be realized in whole or in part. </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">These statements speak only as of the date of this Current Report on Form 8-K and are based on information and estimates available to us at this time. Should known or unknown risks or uncertainties materialize or should underlying assumptions prove inaccurate, actual results could vary materially from past results and those anticipated, estimated or projected. Investors are cautioned not to put undue reliance on forward-looking statements. A further list and description of risks, uncertainties and other matters can be found in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024 and in our subsequent reports on Form 10-Q and Form 10-K, in each case including in the sections thereof captioned &#8220;Note Regarding Forward-Looking Statements&#8221; and &#8220;Item 1A. Risk Factors,&#8221; and in our subsequent reports on Form 8-K. Except as required by law, we do not undertake any obligation to publicly update any forward-looking statements whether as a result of any new information, future events, changed circumstances or otherwise.</span></div><div><span><br/></span></div><div style="margin-bottom:12pt"><span style="color:#1c5a7d;font-family:'Franklin Gothic Book',sans-serif;font-size:12pt;font-weight:700;line-height:112%">Item&#160;9.01 </span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:12pt;font-weight:400;line-height:112%">&#160;&#160;&#160;&#160;</span><span style="color:#1c5a7d;font-family:'Franklin Gothic Book',sans-serif;font-size:12pt;font-weight:700;line-height:112%">Financial Statements and Exhibits.</span></div><div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:700;line-height:120%">(d)&#160;&#160;&#160;&#160;Exhibits</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The exhibits listed below are furnished as part of this Current Report on Form 8-K.</span></div><div style="margin-bottom:12pt;text-indent:36pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:89.912%"><tr><td style="width:1.0%"/><td style="width:17.273%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:2.564%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:77.763%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:700;line-height:112%;text-decoration:underline">Exhibit No.</span></div></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:700;line-height:112%;text-decoration:underline">Description</span></div></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:112%">104</span></div></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:top"><div><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:112%">Cover Page Interactive Data File (embedded within the Inline XBRL document)</span></div></td></tr></table></div><div style="height:42.75pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="text-align:center"><span><br/></span></div></div></div><div id="ia22ab1d835ca499face9a626527c88ee_10"></div><hr style="page-break-after:always"/><div style="min-height:42.75pt;width:100%"><div><span><br/></span></div></div><div><span><br/></span></div><div style="margin-bottom:12pt;text-align:center"><span style="color:#1c5a7d;font-family:'Franklin Gothic Book',sans-serif;font-size:12pt;font-weight:700;line-height:120%">Signatures</span></div><div style="margin-bottom:24pt;text-align:justify"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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. </span></div><div style="margin-bottom:24pt;padding-left:198pt"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Biogen Inc.</span></div><div style="padding-left:198pt"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">By:  </span><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">/s/ Wendell Taylor&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;               &#160;&#160;&#160;&#160;</span></div><div style="padding-left:216pt"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Wendell Taylor</span></div><div style="padding-left:216pt"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Secretary</span></div><div style="padding-left:216pt"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Franklin Gothic Book',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Date: July 7, 2025</span></div><div><span><br/></span></div><div style="height:42.75pt;position:relative;width:100%"><div style="bottom:0;position:absolute;width:100%"><div style="text-align:center"><span><br/></span></div></div></div></body></html>
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biib-20250707
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):
July 7, 2025
Biogen Inc.
(Exact name of registrant as specified in its charter)
Delaware
0-19311
33-0112644
(State or other jurisdiction of incorporation)
(Commission File Number)
(IRS Employer Identification No.)
225 Binney Street
,
Cambridge
,
Massachusetts
02142
(Address of principal executive offices; Zip Code)
Registrant's telephone number, including area code:
(
617
)
679-2000
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:
☐
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))
Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Trading Symbol(s)
Name of each exchange on which registered
Common Stock, $0.0005 par value
BIIB
The Nasdaq Global Select Market
Indicate by check mark whether the registrant is an emerging growth company 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 2.02     Results of Operations and Financial Condition
Biogen Inc. (Biogen) expects that its GAAP and non-GAAP results for the second quarter of 2025 will include acquired in-process research and development, upfront and milestone expense of approximately $46 million on a pre-tax basis. The estimated charge is expected to impact GAAP and non-GAAP net income per diluted share for the second quarter 2025 by approximately ($0.26) per share.
During the first quarter of 2025 we began presenting acquired in-process research and development, upfront and milestone expense as a separate line item in our condensed consolidated statements of income. Acquired in-process research and development, upfront and milestone expense includes costs incurred in connection with collaboration and license agreements such as upfront and milestone payments and, when applicable, premiums on equity securities and asset acquisitions of acquired in-process research and development. Biogen does not forecast such acquired in-process research and development, upfront and milestone expense due to the uncertainty of the future occurrence, magnitude, and timing of these transactions in any given period.
Results for the quarter ended June 30, 2025, have not been finalized and are subject to our financial statement closing procedures. There can be no assurance that our final results will not differ from the preliminary unaudited estimates described herein.
Note Regarding Forward-Looking Statements
This Current Report on Form 8-K contains forward-looking statements relating to our financial and operating results and financial guidance, that are being made pursuant to the provisions of the Private Securities Litigation Reform Act of 1995 (the PSLRA) with the intention of obtaining the benefits of the "Safe Harbor" provisions of the PSLRA. These forward-looking statements may be accompanied by such words as "aim," "anticipate," "assume," "believe," "contemplate," "continue," "could," "estimate," "expect," "forecast," "goal," "guidance," "hope," "intend," "may," "objective," "outlook," "plan," "possible," "potential," "predict," "project," "should," "target," "will," "would" or the negative of these words or other words and terms of similar meaning.
Given their forward-looking nature, these statements involve substantial risks and uncertainties and may be based on inaccurate assumptions and could cause actual results to differ materially from those reflected in such statements. The information above includes, among others, forward-looking statements reflecting management's current intentions and expectations for the future with respect to Biogen's estimated acquired in-process research and development, upfront and milestone expense for the quarter ended June 30, 2025, and the related impact to Biogen's GAAP and non-GAAP earnings per share for such period. These forward-looking statements are based on management's current beliefs and assumptions and on information currently available to management. Given their nature, we cannot assure that any outcome expressed in these forward-looking statements will be realized in whole or in part.
These statements speak only as of the date of this Current Report on Form 8-K and are based on information and estimates available to us at this time. Should known or unknown risks or uncertainties materialize or should underlying assumptions prove inaccurate, actual results could vary materially from past results and those anticipated, estimated or projected. Investors are cautioned not to put undue reliance on forward-looking statements. A further list and description of risks, uncertainties and other matters can be found in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024 and in our subsequent reports on Form 10-Q and Form 10-K, in each case including in the sections thereof captioned "Note Regarding Forward-Looking Statements" and "Item 1A. Risk Factors," and in our subsequent reports on Form 8-K. Except as required by law, we do not undertake any obligation to publicly update any forward-looking statements whether as a result of any new information, future events, changed circumstances or otherwise.
Item 9.01
Financial Statements and Exhibits.
(d)    Exhibits
The exhibits listed below are furnished as part of this Current Report on Form 8-K.
Exhibit No.
Description
104
Cover Page Interactive Data File (embedded within the Inline XBRL document)
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.
Biogen Inc.
By:
/s/ Wendell Taylor
Wendell Taylor
Secretary
Date: July 7, 2025