0000899243-18-018319.txt : 20180627 0000899243-18-018319.hdr.sgml : 20180627 20180627162531 ACCESSION NUMBER: 0000899243-18-018319 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180625 FILED AS OF DATE: 20180627 DATE AS OF CHANGE: 20180627 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: BYERS BLAKE CENTRAL INDEX KEY: 0001741840 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38541 FILM NUMBER: 18922042 MAIL ADDRESS: STREET 1: C/O MAGENTA THERAPEUTICS STREET 2: 50 HAMPSHIRE STREET CITY: CAMBRIDGE STATE: MA ZIP: 02139 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Magenta Therapeutics, Inc. CENTRAL INDEX KEY: 0001690585 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 245 FIRST STREET STREET 2: 4TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02142 BUSINESS PHONE: 857-201-2700 MAIL ADDRESS: STREET 1: 245 FIRST STREET STREET 2: 4TH FLOOR CITY: CAMBRIDGE STATE: MA ZIP: 02142 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2018-06-25 0 0001690585 Magenta Therapeutics, Inc. MGTA 0001741840 BYERS BLAKE C/O MAGENTA THERAPEUTICS, INC. 50 HAMPSHIRE STREET CAMBRIDGE MA 02139 1 0 0 0 Common Stock 2018-06-25 4 C 0 3339137 A 3339137 I See Footnote Series A Preferred Stock 2018-06-25 4 C 0 133400 D Common Stock 51626 0 I See Footnote Series B Preferred Stock 2018-06-25 4 C 0 8494864 D Common Stock 3287511 0 I See Footnote The reported securities converted into shares of the Issuer's common stock on a 2.58398:1 basis automatically immediately prior to the closing of the Issuer's initial public without payment of further consideration. The shares had no expiration date. The reported securities are directly held by GV 2016, L.P. GV 2016 GP, L.P., the general partner of GV 2016, L.P., GV 2016 GP, L.L.C., the general partner of GV 2016 GP, L.P., Alphabet Holdings LLC, the sole member of GV 2016 GP, L.L.C., XXVI Holdings Inc., the managing member of Alphabet Holdings LLC, and Alphabet Inc., the sole stockholder of XXVI Holdings Inc., may each be deemed to have sole power to vote or dispose of these shares. Dr. Byers is an affiliate of GV 2016 GP, L.P. but does not have voting or dispositive power over the shares held by GV 2016, L.P. Dr. Byers disclaims beneficial ownership of the shares held by GV 2016, L.P. except to the extent of his pecuniary interest, if any, therein and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of the reported securities for the purpose of Section 16 or for any other purpose. /s/ Zoran Zdraveski, Attorney-in-Fact for Blake Byers 2018-06-27