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Filing
SC 13G
SC 13G
0000902219-12-000248
·
IMMUNOGEN INC
Filer
Filing index
Filing metadata
Accession number
0000902219-12-000248
Form type
SC 13G
Filer
IMMUNOGEN INC
CIK
CIK 855654
Filed
Feb 14, 2012
Reporting period
Dec 31, 2011
Description
Passive 5%+ stake
Documents
Filing index
0000902219-12-000248-index.htm
Complete submission
0000902219-12-000248.txt
All documents
directory listing
Filed by
IMMUNOGEN INC
CIK 855654
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