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Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0000899243-23-001838
Filing Date
2023-01-17
Accepted
2023-01-17 16:05:20
Documents
1
Period of Report
2023-01-12

Document Format Files

Seq Description Document Type Size
1 FORM 4 SUBMISSION doc4.html 4  
1 FORM 4 SUBMISSION doc4.xml 4 11481
  Complete submission text file 0000899243-23-001838.txt   15634
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 9TH FLOOR NEW YORK NY 10165
Business Address 60 EAST 42ND STREET 9TH FLOOR 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: 4 | Act: 34 | File No.: 001-35409 | Film No.: 23531590

Mailing Address 60 EAST 42ND STREET 9TH FLOOR NEW YORK NY 10165
Business Address 60 EAST 42ND STREET 9TH FLOOR NEW YORK NY 10165 212-446-2465
NEWTYN TE PARTNERS, LP (Reporting) CIK: 0001548709 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-35409 | Film No.: 23531589

Mailing Address 60 EAST 42ND STREET 9TH FLOOR NEW YORK NY 10165
Business Address 60 EAST 42ND STREET 9TH FLOOR NEW YORK NY 10165 212-446-2465
Newtyn Management, LLC (Reporting) CIK: 0001569241 (see all company filings)

State of Incorp.: NY | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 001-35409 | Film No.: 23531591

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: 4 | Act: 34 | File No.: 001-35409 | Film No.: 23531592

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: 4 | Act: 34 | File No.: 001-35409 | Film No.: 23531588

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: 4 | Act: 34 | File No.: 001-35409 | Film No.: 23531587