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Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0000899243-21-013179
Filing Date
2021-03-23
Accepted
2021-03-23 17:30:11
Documents
1
Period of Report
2021-03-19

Document Format Files

Seq Description Document Type Size
1 FORM 4 SUBMISSION doc4.html 4  
1 FORM 4 SUBMISSION doc4.xml 4 19147
  Complete submission text file 0000899243-21-013179.txt   23902
Mailing Address C/O FLAGSHIP PIONEERING, INC. 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142
Business Address
AFEYAN NOUBAR (Reporting) CIK: 0001222012 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-38586 | Film No.: 21765757

Mailing Address 55 CAMBRIDGE PARKWAY, 8TH FLOOR CAMBRIDGE MA 02142
Business Address 55 CAMBRIDGE PARKWAY, 8TH FLOOR CAMBRIDGE MA 02142 617-868-1888
Flagship Ventures Fund IV, L.P. (Reporting) CIK: 0001503559 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-38586 | Film No.: 21765762

Mailing Address 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142
Business Address 55 CAMBRIDGE PARKWAY, SUITE 800E CAMBRIDGE MA 02142 617-868-1888
Flagship Ventures Fund IV General Partner LLC (Reporting) CIK: 0001508051 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-38586 | Film No.: 21765763

Mailing Address ONE MEMORIAL DRIVE, 7TH FLOOR CAMBRIDGE MA 02142
Business Address ONE MEMORIAL DRIVE, 7TH FLOOR CAMBRIDGE MA 02142 617-868-1888
Flagship Ventures Fund V, L.P. (Reporting) CIK: 0001627639 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-38586 | Film No.: 21765760

Mailing Address ONE MEMORIAL DRIVE 7TH FLOOR CAMBRIDGE MA 02142
Business Address ONE MEMORIAL DRIVE 7TH FLOOR CAMBRIDGE MA 02142 617-868-1888
Flagship Ventures Opportunities Fund I, L.P. (Reporting) CIK: 0001677345 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-38586 | Film No.: 21765758

Mailing Address 399 BINNEY STREET, SUITE 300 CAMBRIDGE MA 02139
Business Address 399 BINNEY STREET, SUITE 300 CAMBRIDGE MA 02139 617-679-9600
Rubius Therapeutics, Inc. (Issuer) CIK: 0001709401 (see all company filings)

IRS No.: 042688109 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2836 Biological Products, (No Diagnostic Substances)

Mailing Address 55 CAMBRIDGE PARKWAY SUITE 800E CAMBRIDGE MA 02142
Business Address 55 CAMBRIDGE PARKWAY SUITE 800E CAMBRIDGE MA 02142 617-868-1888
Flagship Ventures Fund V General Partner LLC (Reporting) CIK: 0001724575 (see all company filings)

State of Incorp.: DE
Type: 4 | Act: 34 | File No.: 001-38586 | Film No.: 21765761

Mailing Address 55 CAMBRIDGE PARKWAY SUITE 800E CAMBRIDGE MA 02142
Business Address 55 CAMBRIDGE PARKWAY SUITE 800E CAMBRIDGE MA 02142 617-868-1888
Flagship Ventures Opportunities Fund I General Partner LLC (Reporting) CIK: 0001725004 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-38586 | Film No.: 21765759