0000899243-17-023526.txt : 20171004 0000899243-17-023526.hdr.sgml : 20171004 20171004163707 ACCESSION NUMBER: 0000899243-17-023526 CONFORMED SUBMISSION TYPE: 3 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20171004 FILED AS OF DATE: 20171004 DATE AS OF CHANGE: 20171004 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: STARR KEVIN P CENTRAL INDEX KEY: 0001192603 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38223 FILM NUMBER: 171122072 MAIL ADDRESS: STREET 1: 75 SIDNEY STREET CITY: CAMBRIDGE STATE: MA ZIP: 02139 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: TEPPER ROBERT I CENTRAL INDEX KEY: 0001192595 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38223 FILM NUMBER: 171122071 MAIL ADDRESS: STREET 1: 40 LANDSDOWNE STREET CITY: CAMBRIDGE STATE: MA ZIP: 02139 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: LEVIN MARK J CENTRAL INDEX KEY: 0001180428 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38223 FILM NUMBER: 171122073 MAIL ADDRESS: STREET 1: 40 LANDSDOWNE STREET CITY: CAMBRIDGE STATE: MA ZIP: 02139 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: THIRD ROCK VENTURES LP CENTRAL INDEX KEY: 0001408591 STATE OF INCORPORATION: DE FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38223 FILM NUMBER: 171122076 BUSINESS ADDRESS: STREET 1: 29 NEWBURY STREET STREET 2: SUITE 401 CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 617-859-3099 MAIL ADDRESS: STREET 1: 29 NEWBURY STREET STREET 2: SUITE 401 CITY: BOSTON STATE: MA ZIP: 02116 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Third Rock Ventures GP, L.P. CENTRAL INDEX KEY: 0001578976 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38223 FILM NUMBER: 171122075 BUSINESS ADDRESS: STREET 1: C/O THIRD ROCK VENTURES STREET 2: 29 NEWBURY STREET, 3RD FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 617-585-2000 MAIL ADDRESS: STREET 1: C/O THIRD ROCK VENTURES STREET 2: 29 NEWBURY STREET, 3RD FLOOR CITY: BOSTON STATE: MA ZIP: 02116 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: TRV GP, LLC CENTRAL INDEX KEY: 0001578973 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38223 FILM NUMBER: 171122074 BUSINESS ADDRESS: STREET 1: C/O THIRD ROCK VENTURES STREET 2: 29 NEWBURY STREET, 3RD FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 617-585-2000 MAIL ADDRESS: STREET 1: C/O THIRD ROCK VENTURES STREET 2: 29 NEWBURY STREET, 3RD FLOOR CITY: BOSTON STATE: MA ZIP: 02116 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: RHYTHM PHARMACEUTICALS, INC. CENTRAL INDEX KEY: 0001649904 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 462159271 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 500 BOYLSTON STREET STREET 2: 11TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 BUSINESS PHONE: 857-264-4280 MAIL ADDRESS: STREET 1: 500 BOYLSTON STREET STREET 2: 11TH FLOOR CITY: BOSTON STATE: MA ZIP: 02116 FORMER COMPANY: FORMER CONFORMED NAME: RHYTHM METABOLIC, INC. DATE OF NAME CHANGE: 20150803 3 1 doc3.xml FORM 3 SUBMISSION X0206 3 2017-10-04 0 0001649904 RHYTHM PHARMACEUTICALS, INC. RYTM 0001408591 THIRD ROCK VENTURES LP C/O THIRD ROCK VENTURES, LLC, 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 0001578976 Third Rock Ventures GP, L.P. 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 0001578973 TRV GP, LLC 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 0001180428 LEVIN MARK J C/O THIRD ROCK VENTURES, LLC 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 0001192603 STARR KEVIN P C/O THIRD ROCK VENTURES, LLC 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 0001192595 TEPPER ROBERT I C/O THIRD ROCK VENTURES, LLC 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 0 0 1 0 Common Stock 17627 D Series A Convertible Preferred Stock Common Stock 1033751 D Series A-1 Junior Preferred Stock Common Stock 2930059 D These shares are directly held by Third Rock Ventures, L.P. ("TRV"). The general partner of TRV is Third Rock Ventures GP, L.P. ("TRV GP"). The general partner of TRV GP is TRV GP, LLC ("TRV GP LLC"). The individual managers of TRV GP LLC are Mark Levin ("Levin"), Kevin Starr ("Starr") and Dr. Robert Tepper ("Tepper"). Each of TRV GP, TRV GP LLC, Levin, Starr and Tepper disclaims beneficial ownership of these shares except to the extent of its or his pecuniary interest therein, if any, and this report shall not be deemed an admission that it or he is the beneficial owner of such shares. Each share of Series A Convertible Preferred Stock and Series A-1 Junior Preferred Stock is convertible, at any time, at the holder's election, into Common Stock of the Issuer on a 9.17-for-one basis. In addition, effective upon the closing of the Issuer's initial public offering of its Common Stock, each share of preferred stock will automatically convert on a 9.17-for-one basis without payment of consideration. The preferred stock has no expiration date. /s/ Kevin Gillis, Chief Financial Officer of TRV GP, LLC, general partner of Third Rock Ventures GP, L.P., general partner of Third Rock Ventures, L.P. 2017-10-04 /s/ Kevin Gillis, Chief Financial Officer of TRV GP, LLC, general partner of Third Rock Ventures GP, L.P. 2017-10-04 /s/ Kevin Gillis, Chief Financial Officer of TRV GP, LLC 2017-10-04 /s/ Kevin Gillis by power of attorney for Mark Levin 2017-10-04 /s/ Kevin Gillis by power of attorney for Kevin Starr 2017-10-04 /s/ Kevin Gillis by power of attorney for Dr. Robert Tepper 2017-10-04