ImmunoGen, Inc. reports

Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
Waltham, MA
SEC filing record 1 source field available
Fiscal year end
31 December
ImmunoGen, Inc. has filed 1,766 SEC EDGAR filings since 14 Feb 1994

SEC filing history

Showing 326-350 of 1,000 matching filings.

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25
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14
4

FORM 4 -

Filing date
02 Jul 2021
Reporting date
30 Jun 2021
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4

FORM 4 -

Filing date
02 Jul 2021
Reporting date
30 Jun 2021
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4

FORM 4 -

Filing date
02 Jul 2021
Reporting date
30 Jun 2021
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4

FORM 4 -

Filing date
02 Jul 2021
Reporting date
30 Jun 2021
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4

FORM 4 -

Filing date
17 Jun 2021
Reporting date
16 Jun 2021
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4

FORM 4 -

Filing date
17 Jun 2021
Reporting date
16 Jun 2021
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4

FORM 4 -

Filing date
17 Jun 2021
Reporting date
16 Jun 2021
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4

FORM 4 -

Filing date
17 Jun 2021
Reporting date
16 Jun 2021
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4

FORM 4 -

Filing date
17 Jun 2021
Reporting date
16 Jun 2021
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4

FORM 4 -

Filing date
17 Jun 2021
Reporting date
16 Jun 2021
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DEFA14A File 000-17999

DEFA14A

Filing date
26 May 2021
Reporting date
Not listed
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DEFA14A File 000-17999

DEFA14A

Filing date
28 Apr 2021
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Not listed
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DEF 14A File 000-17999

DEF 14A

Filing date
28 Apr 2021
Reporting date
16 Jun 2021
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4

FORM 4 -

Filing date
02 Apr 2021
Reporting date
31 Mar 2021
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4

FORM 4 -

Filing date
02 Apr 2021
Reporting date
31 Mar 2021
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S-8 File 333-253753

S-8

Filing date
02 Mar 2021
Reporting date
Not listed
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SC 13G File 005-40774

SC 13G

Filing date
16 Feb 2021
Reporting date
Not listed
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SC 13G/A File 005-40774

SC 13G/A

Filing date
16 Feb 2021
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Not listed
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SC 13G/A File 005-40774

SC 13G/A filing

Filing date
11 Feb 2021
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SC 13G/A File 005-40774

SCHEDULE 13G/A

Filing date
10 Feb 2021
Reporting date
Not listed
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