SEC Seal
SEC Banner
Search the Next-Generation EDGAR System
Filing Detail
Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0000899243-19-024349
Filing Date
2019-09-27
Accepted
2019-09-27 18:58:02
Documents
1
Period of Report
2019-09-18

Document Format Files

Seq Description Document Type Size
1 FORM 3 SUBMISSION doc3.html 3  
1 FORM 3 SUBMISSION doc3.xml 3 11810
  Complete submission text file 0000899243-19-024349.txt   15969
Mailing Address ONE BROADWAY 14TH FLOOR CAMBRIDGE MA 02142
Business Address ONE BROADWAY 14TH FLOOR CAMBRIDGE MA 02142 617-441-1000
MERRIMACK PHARMACEUTICALS INC (Issuer) CIK: 0001274792 (see all company filings)

IRS No.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations

Mailing Address 60 EAST 42ND STREET SUITE 960 NEW YORK NY 10165
Business Address 60 EAST 42ND STREET SUITE 960 NEW YORK NY 10165 212-446-2465
NEWTYN PARTNERS, LP (Reporting) CIK: 0001548707 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-35409 | Film No.: 191123453

Mailing Address 60 EAST 42ND STREET SUITE 960 NEW YORK NY 10165
Business Address 60 EAST 42ND STREET SUITE 960 NEW YORK NY 10165 212-446-2465
NEWTYN TE PARTNERS, LP (Reporting) CIK: 0001548709 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-35409 | Film No.: 191123454

Mailing Address 60 EAST 42ND STREET SUITE 960 NEW YORK NY 10165
Business Address 60 EAST 42ND STREET SUITE 960 NEW YORK NY 10165 212-446-2465
Newtyn Management, LLC (Reporting) CIK: 0001569241 (see all company filings)

State of Incorp.: NY | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-35409 | Film No.: 191123452

Mailing Address 60 EAST 42ND ST, 9TH FLOOR NEW YORK NY 10165
Business Address
Levy Noah G. (Reporting) CIK: 0001788608 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-35409 | Film No.: 191123451

Mailing Address 60 EAST 42ND STREET 9TH FLOOR NEW YORK NY 10165
Business Address 60 EAST 42ND STREET 9TH FLOOR NEW YORK NY 10165 212-446-2460
Newtyn Capital Partners, LP (Reporting) CIK: 0001789643 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-35409 | Film No.: 191123455

Mailing Address 60 EAST 42ND STREET 9TH FLOOR NEW YORK NY 10165
Business Address 60 EAST 42ND STREET 9TH FLOOR NEW YORK NY 10165 212-446-2460
Ledo Capital, LLC (Reporting) CIK: 0001789647 (see all company filings)

State of Incorp.: NY | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-35409 | Film No.: 191123456