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Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001209191-19-021017
Filing Date
2019-03-22
Accepted
2019-03-22 17:03:37
Documents
1
Period of Report
2019-03-20

Document Format Files

Seq Description Document Type Size
1 FORM 4 SUBMISSION doc4.html 4  
1 FORM 4 SUBMISSION doc4.xml 4 10638
  Complete submission text file 0001209191-19-021017.txt   13334
Mailing Address 400 TECHNOLOGY SQUARE 10TH FLOOR CAMBRIDGE MA 02139
Business Address 400 TECHNOLOGY SQUARE 10TH FLOOR CAMBRIDGE MA 02139 857-201-2700
Atlas Venture Fund X, L.P. (Reporting) CIK: 0001628098 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-38541 | Film No.: 19700539

Mailing Address 100 TECHNOLOGY SQUARE 5TH FLOOR CAMBRIDGE MA 02139
Business Address 100 TECHNOLOGY SQUARE 5TH FLOOR CAMBRIDGE MA 02139 857-201-2700
Magenta Therapeutics, Inc. (Issuer) CIK: 0001690585 (see all company filings)

IRS No.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations

Mailing Address 400 TECH. SQ. 10TH FLOOR CAMBRIDGE MA 02139
Business Address 400 TECH. SQ. 10TH FLOOR CAMBRIDGE MA 02139 857-201-2700
Atlas Venture Associates X, LLC (Reporting) CIK: 0001742765 (see all company filings)

State of Incorp.: DE
Type: 4 | Act: 34 | File No.: 001-38541 | Film No.: 19700541

Mailing Address 400 TECHNOLOGY SQ. 10TH FLOOR CAMBRIDGE MA 02139
Business Address 400 TECHNOLOGY SQ. 10TH FLOOR CAMBRIDGE MA 02139 857-201-2700
ATLAS VENTURE ASSOCIATES X, L.P. (Reporting) CIK: 0001742766 (see all company filings)

State of Incorp.: DE
Type: 4 | Act: 34 | File No.: 001-38541 | Film No.: 19700540