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Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0001209191-19-009858
Filing Date
2019-02-13
Accepted
2019-02-13 18:37:25
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 12682
  Complete submission text file 0001209191-19-009858.txt   15790
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 SunStates Fund, L.P. (Reporting) CIK: 0001765022 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599701

Mailing Address 450 KENDALL STREET CAMBRIDGE MA 02142
Business Address 450 KENDALL STREET CAMBRIDGE MA 02142 617-425-9200
MPM SunStates GP Managing Member LLC (Reporting) CIK: 0001765023 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599698

Mailing Address 450 KENDALL STREET CAMBRIDGE MA 02142
Business Address 450 KENDALL STREET CAMBRIDGE MA 02142 617-425-92--
MPM Asset Management Investors SunStates Fund LLC (Reporting) CIK: 0001765025 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599700

Mailing Address 450 KENDALL STREET CAMBRIDGE MA 02142
Business Address 450 KENDALL STREET CAMBRIDGE MA 02142 617-425-9200
MPM SunStates Fund GP LLC (Reporting) CIK: 0001765026 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38811 | Film No.: 19599699