Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0001012975-15-000312
Filing Date
2015-04-29
Accepted
2015-04-29 18:55:57
Documents
1
Period of Report
2015-04-29

Document Format Files

Seq Description Document Type Size
1 PRIMARY DOCUMENT edgar.html 3  
1 PRIMARY DOCUMENT edgar.xml 3 12866
  Complete submission text file 0001012975-15-000312.txt   16652
Mailing Address 40 LANDSDOWNE STREET CAMBRIDGE MA 02139
Business Address
LEVIN MARK J (Reporting) CIK: 0001180428 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-37359 | Film No.: 15814574

Mailing Address 40 LANDSDOWNE STREET CAMBRIDGE MA 02139
Business Address
TEPPER ROBERT I (Reporting) CIK: 0001192595 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-37359 | Film No.: 15814572

Mailing Address 75 SIDNEY STREET CAMBRIDGE MA 02139
Business Address
STARR KEVIN P (Reporting) CIK: 0001192603 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-37359 | Film No.: 15814573

Mailing Address 29 NEWBURY STREET 3RD FLOOR BOSTON MA 02116
Business Address 29 NEWBURY STREET 3RD FLOOR BOSTON MA 02116 617-585-2000
Third Rock Ventures II, L.P. (Reporting) CIK: 0001488495 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-37359 | Film No.: 15814577

Mailing Address 215 FIRST STREET CAMBRIDGE MA 02142
Business Address 215 FIRST STREET CAMBRIDGE MA 02142 617-374-7580
Blueprint Medicines Corp (Issuer) CIK: 0001597264 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations

Mailing Address THIRD ROCK VENTURES 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116
Business Address THIRD ROCK VENTURES 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 617-585-2000
Third Rock Ventures GP II, L.P. (Reporting) CIK: 0001614061 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-37359 | Film No.: 15814576

Mailing Address THIRD ROCK VENTURES 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116
Business Address THIRD ROCK VENTURES 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 617-585-2000
TRV GP II, LLC (Reporting) CIK: 0001614073 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-37359 | Film No.: 15814575