0000899243-18-009442.txt : 20180404 0000899243-18-009442.hdr.sgml : 20180404 20180404162407 ACCESSION NUMBER: 0000899243-18-009442 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180402 FILED AS OF DATE: 20180404 DATE AS OF CHANGE: 20180404 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Rock Springs Capital LLC CENTRAL INDEX KEY: 0001735397 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38433 FILM NUMBER: 18737481 BUSINESS ADDRESS: STREET 1: 650 SOUTH EXETER STREET STREET 2: SUITE 1070 CITY: BALTIMORE STATE: MD ZIP: 21202 BUSINESS PHONE: 410-220-0142 MAIL ADDRESS: STREET 1: 650 SOUTH EXETER STREET STREET 2: SUITE 1070 CITY: BALTIMORE STATE: MD ZIP: 21202 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Rock Springs Capital Management LP CENTRAL INDEX KEY: 0001595725 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38433 FILM NUMBER: 18737480 BUSINESS ADDRESS: STREET 1: 650 SOUTH EXETER STREET STREET 2: SUITE 1070 CITY: BALTIMORE STATE: MD ZIP: 21202 BUSINESS PHONE: 4102200129 MAIL ADDRESS: STREET 1: 650 SOUTH EXETER STREET STREET 2: SUITE 1070 CITY: BALTIMORE STATE: MD ZIP: 21202 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Rock Springs Capital Master Fund LP CENTRAL INDEX KEY: 0001735393 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38433 FILM NUMBER: 18737482 BUSINESS ADDRESS: STREET 1: 650 SOUTH EXETER STREET STREET 2: SUITE 1070 CITY: BALTIMORE STATE: MD ZIP: 21202 BUSINESS PHONE: 410-220-0142 MAIL ADDRESS: STREET 1: 190 ELGIN AVENUE CITY: GEORGE TOWN STATE: E9 ZIP: KY1 9001 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Homology Medicines, Inc. CENTRAL INDEX KEY: 0001661998 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 473468154 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 45 WIGGINS AVE. CITY: BEDFORD STATE: MA ZIP: 01730 BUSINESS PHONE: 857-305-1825 MAIL ADDRESS: STREET 1: 45 WIGGINS AVE. CITY: BEDFORD STATE: MA ZIP: 01730 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2018-04-02 1 0001661998 Homology Medicines, Inc. FIXX 0001595725 Rock Springs Capital Management LP 650 SOUTH EXETER ST. SUITE 1070 BALTIMORE MD 21202 0 0 1 0 0001735393 Rock Springs Capital Master Fund LP C/O WALKERS CORPORATE LIMITED CAYMAN CORPORATE CENTRE 27 HOSPITAL ROAD GEORGE TOWN, GRAND CAYMAN E9 KY1-9008 CAYMAN ISLANDS 0 0 1 0 0001735397 Rock Springs Capital LLC 650 SOUTH EXETER ST. SUITE 1070 BALTIMORE MD 21202 0 0 1 0 Common Stock 2018-04-02 4 C 0 395845 0.00 A 395845 I See footnote Common Stock 2018-04-02 4 P 0 250000 16.00 A 645845 I See footnote Series B Preferred Stock 2018-04-02 4 C 0 395845 0.00 D Common Stock 395845 0 I See footnote The securities reported herein are held of record by Rock Springs Capital Master Fund LP ("Master Fund"). Rock Springs Capital LLC ("RSC") is the general partner of Rock Springs Capital Management LP ("RSCM") which is the investment manager to Master Fund. RSC and RSCM may therefore be deemed to have or share beneficial ownership of the securities held directly by Master Fund. Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock. Rock Springs Capital Master Fund LP, By: Rock Springs Capital Management LP, By: /s/ Graham McPhail, Managing Member 2018-04-02 Rock Springs Capital LLC, By: /s/ Graham McPhail, Managing Member 2018-04-02 Rock Springs Capital Management LP, Rock Springs Capital LLC, By: /s/ Graham McPhail, Managing Member 2018-04-02