<SEC-DOCUMENT>0000080255-15-000508-index.html : 20150213 <SEC-HEADER>0000080255-15-000508.hdr.sgml : 20150213 <ACCEPTANCE-DATETIME>20150213132448 ACCESSION NUMBER: 0000080255-15-000508 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20150213 DATE AS OF CHANGE: 20150213 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 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-87630 FILM NUMBER: 15612042 BUSINESS ADDRESS: STREET 1: 128 SYDNEY STREET CITY: CAMBRIDGE STATE: MA ZIP: 02139 BUSINESS PHONE: 617-649-9200 MAIL ADDRESS: STREET 1: 128 SYDNEY STREET CITY: CAMBRIDGE STATE: MA ZIP: 02139 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: PRICE T ROWE ASSOCIATES INC /MD/ CENTRAL INDEX KEY: 0000080255 STANDARD INDUSTRIAL CLASSIFICATION: SECURITY & COMMODITY BROKERS, DEALERS, EXCHANGES & SERVICES [6200] IRS NUMBER: 520556948 STATE OF INCORPORATION: MD FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 100 EAST PRATT ST CITY: BALTIMORE STATE: MD ZIP: 21202 BUSINESS PHONE: (410)345-6603 MAIL ADDRESS: STREET 1: P.O. BOX 89000 CITY: BALTIMORE STATE: MD ZIP: 21289 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13G/A <SEQUENCE>1 <FILENAME>xlrn13gadec14.htm <DESCRIPTION>XLRN AS OF 12/31/2014 <TEXT> Document 1 - file: xlrn13gadec14.htm
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