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 176-200 of 1,000 matching filings.

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25
Current page
8
4

4 filing

Filing date
16 Jun 2023
Reporting date
14 Jun 2023
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424B5 File 333-251502

424B5

Filing date
05 May 2023
Reporting date
Not listed
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144 File 000-17999

144 filing

Filing date
05 May 2023
Reporting date
Not listed
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424B5 File 333-251502

424B5

Filing date
03 May 2023
Reporting date
Not listed
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4

4 filing

Filing date
02 May 2023
Reporting date
28 Apr 2023
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3

3 filing

Filing date
02 May 2023
Reporting date
24 Apr 2023
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S-8 File 333-271524

FORM S-8

Filing date
28 Apr 2023
Reporting date
Not listed
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S-8 File 333-271523

FORM S-8

Filing date
28 Apr 2023
Reporting date
Not listed
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ARS File 000-17999

ARS

Filing date
26 Apr 2023
Reporting date
31 Dec 2022
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DEFA14A File 000-17999

DEFA14A

Filing date
26 Apr 2023
Reporting date
Not listed
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4

4 filing

Filing date
04 Apr 2023
Reporting date
31 Mar 2023
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4

4 filing

Filing date
04 Apr 2023
Reporting date
31 Mar 2023
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4

4 filing

Filing date
04 Apr 2023
Reporting date
31 Mar 2023
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SC 13G/A File 005-40774

SC 13G/A

Filing date
14 Feb 2023
Reporting date
Not listed
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