<SEC-DOCUMENT>0001193125-21-335885-index.html : 20211122
<SEC-HEADER>0001193125-21-335885.hdr.sgml : 20211122
<ACCEPTANCE-DATETIME>20211122070129
ACCESSION NUMBER:		0001193125-21-335885
CONFORMED SUBMISSION TYPE:	SC TO-T/A
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20211122
DATE AS OF CHANGE:		20211122
GROUP MEMBERS:		ASTROS MERGER SUB, INC.

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ACCELERON PHARMA INC
		CENTRAL INDEX KEY:			0001280600
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC TO-T/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-87630
		FILM NUMBER:		211430134

	BUSINESS ADDRESS:	
		STREET 1:		128 SIDNEY STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
		BUSINESS PHONE:		617-649-9200

	MAIL ADDRESS:	
		STREET 1:		128 SIDNEY STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MERCK SHARP & DOHME CORP.
		CENTRAL INDEX KEY:			0000064978
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				221109110
		STATE OF INCORPORATION:			NJ
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC TO-T/A

	BUSINESS ADDRESS:	
		STREET 1:		ONE MERCK DR
		STREET 2:		P O BOX 100
		CITY:			WHITEHOUSE STATION
		STATE:			NJ
		ZIP:			08889-0100
		BUSINESS PHONE:		9084231688

	MAIL ADDRESS:	
		STREET 1:		ONE MERCK DR
		STREET 2:		PO BOX 100 WS3AB-05
		CITY:			WHITEHOUSE STATION
		STATE:			NJ
		ZIP:			08889-0100

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MERCK & CO INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC TO-T/A
<SEQUENCE>1
<FILENAME>d436870dsctota.htm
<DESCRIPTION>SC TO-T/A
<TEXT>
Document 1 - file: d436870dsctota.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(A)(5)(I)
<SEQUENCE>2
<FILENAME>d436870dex99a5i.htm
<DESCRIPTION>EX-99.(A)(5)(I)
<TEXT>
Document 2 - file: d436870dex99a5i.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(A)(5)(J)
<SEQUENCE>3
<FILENAME>d436870dex99a5j.htm
<DESCRIPTION>EX-99.(A)(5)(J)
<TEXT>
Document 3 - file: d436870dex99a5j.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g436870g1120045802763.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g436870g1120045802763.jpg

</DOCUMENT>
</SEC-DOCUMENT>