IMGN-Agreements
IMMUNOGEN INC Agreements

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Prospectus - IMMUNOGEN INC - 10-26-1999
From: IMGN-Agreements | Date: 1/9/2010  | Views: 15

Filed Pursuant to Rule 424(b)(3) REGISTRATION NO. 333-31795 PROSPECTUS SUPPLEMENT NO. 2 DATED OCTOBER 26, 1999 TO THE PROSPECTUS DATED JULY 22, 1997,  ...  more>>

15 views language: English
Prospectus - IMMUNOGEN INC - 5-20-1999
From: IMGN-Agreements | Date: 1/9/2010  | Views: 5

Filed Pursuant to Rule 424(b)(3) REGISTRATION NO. 333-31795 PROSPECTUS SUPPLEMENT NO. 1 DATED MAY 20, 1999 TO THE PROSPECTUS DATED JULY 22, 1997... ...  more>>

5 views language: English
Prospectus IMMUNOGEN INC 5 30 1997 Filed Pursuant to Rule 424 b 3 REGISTRATION NO 333
From: IMGN-Agreements | Date: 1/9/2010  | Views: 3

Filed Pursuant to Rule 424(b)(3) REGISTRATION NO. 333-22153 PROSPECTUS SUPPLEMENT NO. 1 DATED MAY 29, 1997 TO THE PROSPECTUS DATED APRIL 11, 1997 OF... ...  more>>

3 views language: English
Prospectus IMMUNOGEN INC 5 30 1997
From: IMGN-Agreements | Date: 1/9/2010  | Views: 7

Filed Pursuant to Rule 424(b)(3) REGISTRATION NO. 333-15819 PROSPECTUS SUPPLEMENT NO. 2 DATED MAY 29, 1997 TO THE PROSPECTUS DATED NOVEMBER 8, 1996... ...  more>>

7 views language: English
Prospectus - IMMUNOGEN INC - 3-3-1997
From: IMGN-Agreements | Date: 1/9/2010  | Views: 3

Filed Pursuant to Rule 424(b)(3) REGISTRATION NO. 333-15819 PROSPECTUS SUPPLEMENT NO. 1 DATED FEBRUARY 21, 1997 TO THE PROSPECTUS DATED NOVEMBER 8,... ...  more>>

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Prospectus - IMMUNOGEN INC - 3-3-1997
From: IMGN-Agreements | Date: 1/9/2010  | Views: 7

Filed Pursuant to Rule 424(b)(3) REGISTRATION NO. 333-07661 PROSPECTUS SUPPLEMENT NO. 2 DATED FEBRUARY 21, 1997 TO THE PROSPECTUS DATED JULY 12, 1996  ...  more>>

7 views language: English
Prospectus - IMMUNOGEN INC - 7-24-1996
From: IMGN-Agreements | Date: 1/9/2010  | Views: 4

Filed Pursuant to Rule 424(b)(3) REGISTRATION NO. 333-07661 PROSPECTUS SUPPLEMENT NO. 1 DATED JULY 18, 1996 TO THE PROSPECTUS DATED JULY 12, 1996... ...  more>>

4 views language: English
Prospectus - IMMUNOGEN INC - 7-12-1996
From: IMGN-Agreements | Date: 1/9/2010  | Views: 4

PROSPECTUS IMMUNOGEN, INC. 687,648 SHARES OF COMMON STOCK (PAR VALUE OF $.01 PER SHARE) The 687,648 shares of Common Stock of ImmunoGen, Inc., a... ...  more>>

4 views language: English
Prospectus - IMMUNOGEN INC - 6/18/2009 - IMMUNOGEN INC - 6-18-2009
From: IMGN-Agreements | Date: 1/7/2010  | Views: 22

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents Table of Contents Filed pursuant to Rule 424(b)(5) Registration... ...  more>>

22 views language: English
Prospectus - IMMUNOGEN INC - 6/17/2009 - IMMUNOGEN INC - 6-17-2009
From: IMGN-Agreements | Date: 1/7/2010  | Views: 22

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents Table of Contents Filed pursuant to Rule 424(b)(5) Registration... ...  more>>

22 views language: English
Prospectus - IMMUNOGEN INC - 8/6/2008 - IMMUNOGEN INC - 8-6-2008
From: IMGN-Agreements | Date: 1/7/2010  | Views: 10

Table of Contents Filed Pursuant to Rule 424(B)(3) Registration No. 333-152502 PROSPECTUS 7,812,500 SHARES COMMON STOCK This prospectus relates  ...  more>>

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Prospectus - IMMUNOGEN INC - 6/24/2008 - IMMUNOGEN INC - 6-24-2008
From: IMGN-Agreements | Date: 1/7/2010  | Views: 8

QuickLinks -- Click here to rapidly navigate through this document Filed pursuant to Rule 424(b)(5) Registration No. 333-144488 PROSPECTUS... ...  more>>

8 views language: English
Prospectus - IMMUNOGEN INC - 5/27/2004 - IMMUNOGEN INC - 5-27-2004
From: IMGN-Agreements | Date: 1/7/2010  | Views: 6

QuickLinks -- Click here to rapidly navigate through this document Filed Pursuant to Rule 424(b)(3) Registration No. 333-100123 Prospectus... ...  more>>

6 views language: English