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Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0001209191-19-009857
Filing Date
2019-02-13
Accepted
2019-02-13 18:36:37
Documents
1
Period of Report
2019-02-13

Document Format Files

Seq Description Document Type Size
1 FORM 3 SUBMISSION doc3.html 3  
1 FORM 3 SUBMISSION doc3.xml 3 16881
  Complete submission text file 0001209191-19-009857.txt   21991
Mailing Address THE JOHN HANCOCK TOWER 200 CLARENDON STREET, 54TH STREET BOSTON MA 02116
Business Address
EVNIN LUKE (Reporting) CIK: 0001134657 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599691

Mailing Address 450 KENDALL STREET CAMBRIDGE MA 02142
Business Address 450 KENDALL STREET CAMBRIDGE MA 02142 6174259200
MPM ASSET MANAGEMENT LLC (Reporting) CIK: 0001263048 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599697

Mailing Address THE JOHN HANCOCK TOWER 200 CLARENDON STREET 54TH FLOOR BOSTON MA 02116
Business Address
Foley Todd (Reporting) CIK: 0001473930 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599692

Mailing Address C/O MPM ASSET MANAGEMENT LLC 450 KENDALL STREET CAMBRIDGE MA 02142
Business Address C/O MPM ASSET MANAGEMENT LLC 450 KENDALL STREET CAMBRIDGE MA 02142 (617) 425-9200
MPM BioVentures 2014, L.P. (Reporting) CIK: 0001609492 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599690

Mailing Address C/O MPM ASSET MANAGEMENT LLC 450 KENDALL STREET CAMBRIDGE MA 02124
Business Address C/O MPM ASSET MANAGEMENT LLC 450 KENDALL STREET CAMBRIDGE MA 02124 (617) 425-9200
MPM BioVentures 2014 (B), L.P. (Reporting) CIK: 0001609493 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599693

Mailing Address C/O MPM ASSET MANAGEMENT LLC 450 KENDALL STREET CAMBRIDGE MA 02142
Business Address C/O MPM ASSET MANAGEMENT LLC 450 KENDALL STREET CAMBRIDGE MA 02142 (617) 425-9200
MPM Asset Management Investors BV2014 LLC (Reporting) CIK: 0001609495 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599694

Mailing Address 100 BINNEY STREET CAMBRIDGE MA 02142
Business Address 100 BINNEY STREET CAMBRIDGE MA 02142 617-949-5200
TCR2 THERAPEUTICS INC. (Issuer) CIK: 0001750019 (see all company filings)

IRS No.: 474152751 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2836 Biological Products, (No Diagnostic Substances)

Mailing Address 450 KENDALL STREET CAMBRIDGE MA 02142
Business Address 450 KENDALL STREET CAMBRIDGE MA 02142 617-425-9200
MPM BioVentures 2014 LLC (Reporting) CIK: 0001765021 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599695

Mailing Address 450 KENDALL STREET CAMBRIDGE MA 02142
Business Address 450 KENDALL STREET CAMBRIDGE MA 02142 617-425-9200
MPM BioVentures 2014 GP LLC (Reporting) CIK: 0001765091 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599696