SC 13G | SEC Filings Hub

Filing metadata

Accession number: 0001104659-10-000664
Form type: SC 13G
Filer: IMMUNOGEN INC
CIK: CIK 855654
Filed: Jan 07, 2010
Reporting period: Dec 31, 2009
Description: Passive 5%+ stake

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0001104659-10-000664-index.htm

Complete submission

0001104659-10-000664.txt

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