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Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0000899243-20-016212
Filing Date
2020-06-11
Accepted
2020-06-11 20:37:01
Documents
1
Period of Report
2020-06-11

Document Format Files

Seq Description Document Type Size
1 FORM 3 SUBMISSION doc3.html 3  
1 FORM 3 SUBMISSION doc3.xml 3 12058
  Complete submission text file 0000899243-20-016212.txt   16437
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: 3 | Act: 34 | File No.: 001-39319 | Film No.: 20958597

Mailing Address 301 BINNEY STREET CAMBRIDGE MA 02142
Business Address 301 BINNEY STREET CAMBRIDGE MA 02142 857-529-5908
Generation Bio Co. (Issuer) CIK: 0001733294 (see all company filings)

IRS No.: 814301281 | 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: 3 | Act: 34 | File No.: 001-39319 | Film No.: 20958596

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: 3 | Act: 34 | File No.: 001-39319 | Film No.: 20958595

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 Opportunity Fund I, L.P. (Reporting) CIK: 0001759241 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-39319 | Film No.: 20958594

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 Associates Opportunity I, L.P. (Reporting) CIK: 0001780065 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-39319 | Film No.: 20958593

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 Associates Opportunity I, LLC (Reporting) CIK: 0001780066 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-39319 | Film No.: 20958592