<SEC-DOCUMENT>0000950170-25-004311-index.html : 20250110
<SEC-HEADER>0000950170-25-004311.hdr.sgml : 20250110
<ACCEPTANCE-DATETIME>20250110173457
ACCESSION NUMBER:		0000950170-25-004311
CONFORMED SUBMISSION TYPE:	SCHEDULE 13D
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20250110
DATE AS OF CHANGE:		20250110

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Sage Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001597553
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-88275
		FILM NUMBER:		25524104

	BUSINESS ADDRESS:	
		STREET 1:		55 CAMBRIDGE PARKWAY
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
		BUSINESS PHONE:		617-299-8380

	MAIL ADDRESS:	
		STREET 1:		55 CAMBRIDGE PARKWAY
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BIOGEN INC.
		CENTRAL INDEX KEY:			0000875045
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				330112644
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13D

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ck0001597553-ex99_1.pdf
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: ck0001597553-ex99_1.pdf

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.4
<SEQUENCE>3
<FILENAME>ck0001597553-ex99_4.pdf
<DESCRIPTION>EX-99.4
<TEXT>
Document 3 - file: ck0001597553-ex99_4.pdf

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.I
<SEQUENCE>4
<FILENAME>ck0001597553-ex99_i.pdf
<DESCRIPTION>EX-99.I
<TEXT>
Document 4 - file: ck0001597553-ex99_i.pdf

</DOCUMENT>
</SEC-DOCUMENT>