0000899243-18-017526.txt : 20180620
0000899243-18-017526.hdr.sgml : 20180620
20180620204825
ACCESSION NUMBER: 0000899243-18-017526
CONFORMED SUBMISSION TYPE: 3
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20180620
FILED AS OF DATE: 20180620
DATE AS OF CHANGE: 20180620
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Third Rock Ventures IV, L.P.
CENTRAL INDEX KEY: 0001688327
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: 3
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-38541
FILM NUMBER: 18910733
BUSINESS ADDRESS:
STREET 1: 29 NEWBURY STREET, 3RD FLOOR
CITY: BOSTON
STATE: MA
ZIP: 02116
BUSINESS PHONE: 617-585-2000
MAIL ADDRESS:
STREET 1: 29 NEWBURY STREET, 3RD FLOOR
CITY: BOSTON
STATE: MA
ZIP: 02116
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Third Rock Ventures GP IV, L.P.
CENTRAL INDEX KEY: 0001688326
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: 3
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-38541
FILM NUMBER: 18910734
BUSINESS ADDRESS:
STREET 1: 29 NEWBURY STREET, 3RD FLOOR
CITY: BOSTON
STATE: MA
ZIP: 02116
BUSINESS PHONE: 617-585-2000
MAIL ADDRESS:
STREET 1: 29 NEWBURY STREET, 3RD FLOOR
CITY: BOSTON
STATE: MA
ZIP: 02116
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: TRV GP IV, LLC
CENTRAL INDEX KEY: 0001688325
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: 3
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-38541
FILM NUMBER: 18910735
BUSINESS ADDRESS:
STREET 1: 29 NEWBURY STREET, 3RD FLOOR
CITY: BOSTON
STATE: MA
ZIP: 02116
BUSINESS PHONE: 617-585-2000
MAIL ADDRESS:
STREET 1: 29 NEWBURY STREET, 3RD FLOOR
CITY: BOSTON
STATE: MA
ZIP: 02116
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
3
1
doc3.xml
FORM 3 SUBMISSION
X0206
3
2018-06-20
0
0001690585
Magenta Therapeutics, Inc.
MGTA
0001688327
Third Rock Ventures IV, L.P.
C/O THIRD ROCK VENTURES, LLC
29 NEWBURY STREET, 3RD FLOOR
BOSTON
MA
02116
0
0
1
0
0001688326
Third Rock Ventures GP IV, L.P.
29 NEWBURY STREET, 3RD FLOOR
BOSTON
MA
02116
0
0
1
0
0001688325
TRV GP IV, LLC
29 NEWBURY STREET, 3RD FLOOR
BOSTON
MA
02116
0
0
1
0
Common Stock
96749
D
Series A Preferred Stock
Common Stock
7779656
D
Series B Preferred Stock
Common Stock
131799
D
Each share of Series A Preferred Stock is convertible into shares of the Issuer's common stock, $0.001 par value per share ("Common Stock") on a 2.58398:1 basis. Upon the closing of the Issuer's initial public offering, all shares of Series A Preferred Stock will convert into shares of Common Stock of the Issuer. The Series A Preferred Stock has no expiration date.
Each share of Series B Preferred Stock is convertible into shares of the Issuer's Common Stock on a 2.58398:1 basis. Upon the closing of the Issuer's initial public offering, all shares of Series B Preferred Stock will convert into shares of Common Stock of the Issuer. The Series B Preferred Stock has no expiration date.
The shares are directly held by Third Rock Ventures IV, L.P. ("TRV IV"). The general partner of TRV IV is Third Rock Ventures GP IV, L.P. ("TRV GP IV"). The general partner of TRV GP IV is TRV GP IV, LLC ("TRV GP IV LLC"). Each of TRV GP IV and TRV GP IV LLC disclaims beneficial ownership of these shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that it is the beneficial owner of such shares.
/s/ Kevin Gillis, Chief Financial Officer of TRV GP IV, LLC, general partner of Third Rock Ventures GP IV, L.P., general partner of Third Rock Ventures IV, L.P.
2018-06-20
/s/ Kevin Gillis, Chief Financial Officer of TRV GP IV, LLC, general partner of Third Rock Ventures GP IV, L.P.
2018-06-20
/s/ Kevin Gillis, Chief Financial Officer of TRV GP IV, LLC
2018-06-20