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Filing metadata

Accession number: 0001179110-12-001444
Form type: Form 3
Filer: MERRIMACK PHARMACEUTICALS INC
CIK: CIK 1274792
Filed: Feb 01, 2012
Reporting period: Jan 31, 2012
Description: Initial ownership

Documents

0001179110-12-001444-index.htm

Complete submission

0001179110-12-001444.txt

directory listing

Filed by

MERRIMACK PHARMACEUTICALS INC