<SEC-DOCUMENT>0001193125-22-153170-index.html : 20220517
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<ACCEPTANCE-DATETIME>20220517173001
ACCESSION NUMBER:		0001193125-22-153170
CONFORMED SUBMISSION TYPE:	S-4
PUBLIC DOCUMENT COUNT:		11
FILED AS OF DATE:		20220517
DATE AS OF CHANGE:		20220517

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BIOGEN INC.
		CENTRAL INDEX KEY:			0000875045
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				330112644
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-4
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-265023
		FILM NUMBER:		22936048

	BUSINESS ADDRESS:	
		STREET 1:		225 BINNEY STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
		BUSINESS PHONE:		7814642000

	MAIL ADDRESS:	
		STREET 1:		225 BINNEY STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BIOGEN IDEC INC.
		DATE OF NAME CHANGE:	20070427

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BIOGEN IDEC INC
		DATE OF NAME CHANGE:	20031112

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	IDEC PHARMACEUTICALS CORP / DE
		DATE OF NAME CHANGE:	19970530
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Document 1 - file: d638476ds4.htm

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<DESCRIPTION>EX-23.1
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Document 3 - file: d638476dex231.htm

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Document 4 - file: d638476dex25.htm

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<DESCRIPTION>EX-FILING FEES
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Document 6 - file: d638476dexfilingfees.htm

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