0001179110-13-014661.txt : 20130926 0001179110-13-014661.hdr.sgml : 20130926 20130926165103 ACCESSION NUMBER: 0001179110-13-014661 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20130924 FILED AS OF DATE: 20130926 DATE AS OF CHANGE: 20130926 ISSUER: 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 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 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: POLARIS VENTURE PARTNERS IV LP CENTRAL INDEX KEY: 0001157864 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36065 FILM NUMBER: 131117251 BUSINESS ADDRESS: STREET 1: 1000 WINTER STREET STREET 2: SUITE 3350 CITY: WALTHAM STATE: MA ZIP: 024511215 BUSINESS PHONE: 7812900770 MAIL ADDRESS: STREET 1: 1000 WINTER STREET STREET 2: SUITE 3350 CITY: WALTHAM STATE: MA ZIP: 02451 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: POLARIS VENTURE PARTNERS ENTREPRENEURS FUND IV LP CENTRAL INDEX KEY: 0001170720 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36065 FILM NUMBER: 131117252 BUSINESS ADDRESS: STREET 1: 1000 WINTER STREET STREET 2: SUITE 3350 CITY: WALTHAM STATE: MA ZIP: 02451-1215 BUSINESS PHONE: 7812900770 MAIL ADDRESS: STREET 1: 1000 WINTER STREET STREET 2: SUITE 3350 CITY: WALTHAM STATE: MA ZIP: 02451 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Polaris Venture Management Co IV LLC CENTRAL INDEX KEY: 0001295438 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36065 FILM NUMBER: 131117253 BUSINESS ADDRESS: STREET 1: 1000 WINTER STREET STREET 2: SUITE 3350 CITY: WALTHAM STATE: MA ZIP: 02451 BUSINESS PHONE: 7812900770 MAIL ADDRESS: STREET 1: 1000 WINTER STREET STREET 2: SUITE 3350 CITY: WALTHAM STATE: MA ZIP: 02451 4 1 edgar.xml FORM 4 - X0306 4 2013-09-24 0 0001280600 ACCELERON PHARMA INC XLRN 0001295438 Polaris Venture Management Co IV LLC C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET SUITE 3350 WALTHAM MA 02451 0 0 1 0 0001170720 POLARIS VENTURE PARTNERS ENTREPRENEURS FUND IV LP C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET SUITE 3350 WALTHAM MA 02451 0 0 1 0 0001157864 POLARIS VENTURE PARTNERS IV LP C/O POLARIS VENTURE PARTNERS 1000 WINTER STREET SUITE 3350 WALTHAM MA 02451 0 0 1 0 Common Stock 2013-09-24 4 C 0 1706532 A 1718602 D Common Stock 2013-09-24 4 C 0 629499 A 2348101 D Common Stock 2013-09-24 4 C 0 363495 A 2711596 D Common Stock 2013-09-24 4 C 0 48577 A 2760173 D Common Stock 2013-09-24 4 J 0 277520 A 3037693 D Common Stock 2013-09-24 4 C 0 95541 A 3133234 D Series A Convertible Preferred Stock 2013-09-24 4 C 0 1706532 0 D Common Stock 1706532 0 D Series B Convertible Preferred Stock 2013-09-24 4 C 0 629499 0 D Common Stock 629499 0 D Series C Convertible Preferred Stock 2013-09-24 4 C 0 363495 0 D Common Stock 363495 0 D Series D Convertible Preferred Stock 2013-09-24 4 C 0 48577 0 D Common Stock 48577 0 D Series E Convertible Preferred Stock 2013-09-24 4 J 0 172188 0 D Common Stock 277520 0 D Series F Convertible Preferred Stock 2013-09-24 4 C 0 95541 0 D Common Stock 95541 0 D 222 shares of common stock, 29,594 shares of Series A Convertible Preferred Stock, 11,584 shares of Series B Convertible Preferred Stock, 6,689 shares of Series C Convertible Preferred Stock, 894 shares of Series D Convertible Preferred Stock, 3,168 shares of Series E Convertible Preferred Stock and 1,758 shares of Series F Convertible Preferred Stock of the registrant were owned directly by Polaris Venture Partners Entrepreneurs Fund IV, L.P. (PVPE IV). After the conversions listed herein PVPE IV owns 55,846 shares of common stock. Polaris Venture Management Co. IV, L.L.C. (PVM IV) is the general partner of PVPE IV. PVM IV disclaims beneficial ownership of these securities and this report shall not be deemed an admission that PVM IV is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of its pecuniary interest therein. Each of Jonathan A. Flint, Terrance G. McGuire and Alan G. Spoon are the managing members of PVM IV. Each of Messrs. Flint, McGuire and Spoon disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their pecuniary interest therein. 11,848 shares of common stock, 1,676,938 shares of Series A Convertible Preferred Stock, 617,915 shares of Series B Convertible Preferred Stock, 356,806 shares of Series C Convertible Preferred Stock, 47,683 shares of Series D Convertible Preferred Stock, 169,020 shares of Series E Convertible Preferred Stock and 93,783 shares of Series F Convertible Preferred Stock of the registrant were owned directly by Polaris Venture Partners IV, L.P. (PVP IV). After the conversions listed herein PVP IV owns 3,077,388 shares of common stock. PVM IV is the general partner of PVP IV. PVM IV disclaims beneficial ownership of these securities and this report shall not be deemed an admission that PVM IV is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of its pecuniary interest therein. Each of Messrs. Flint, McGuire and Spoon are the managing members of PVM IV. Each of Messrs. Flint, McGuire and Spoon disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their pecuniary interest therein. Upon closing of the Issuers initial public offering, each share of Series A, B, C, D and F Convertible Preferred Stock automatically converted into one share of Common Stock without payment of further consideration. The shares had no expiration date. Upon closing of the Issuers initial public offering, each share of Series E Preferred Stock automatically converted at a ratio of 1 for 1.61174 into the number of shares of Common Stock shown in column 7 without payment of further consideration. The shares had no expiration date. /s/ Kevin F. McLaughlin, attorney in fact for Polaris Venture Management Co. IV, L.L.C. 2013-09-26 /s/ Kevin F. McLaughlin, attorney in fact for Polaris Venture Partners IV, L.P. 2013-09-26 /s/ Kevin F. McLaughlin, attorney in fact for Polaris Venture Partners Entrepreneurs Fund IV, L.P. 2013-09-26