957 filings
Page 3 of 48
8-K
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1 May 20
ImmunoGen Reports Recent Progress and First Quarter 2020 Financial Results
6:35am
CT ORDER
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30 Apr 20
Confidential treatment order
4:27pm
DEFA14A
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28 Apr 20
Additional proxy soliciting materials
11:46am
4
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2 Apr 20
ImmunoGen / DAVID G FOSTER ownership change
3:56pm
4
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2 Apr 20
ImmunoGen / DEAN J MITCHELL ownership change
7:51am
4
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2 Apr 20
ImmunoGen / Mark Alan Goldberg ownership change
7:51am
4
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25 Feb 20
ImmunoGen / Thomas Ryll ownership change
8:38am
4
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25 Feb 20
ImmunoGen / Mark J Enyedy ownership change
8:38am
4
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25 Feb 20
ImmunoGen / Anna Berkenblit ownership change
8:37am
4
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25 Feb 20
ImmunoGen / Theresa Wingrove ownership change
8:37am
4
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25 Feb 20
ImmunoGen / CRAIG BARROWS ownership change
8:36am
8-K
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14 Feb 20
Amendments to the Registrant's Code of Ethics, or Waiver of a Provision of the Code of Ethics
4:46pm
SC 13G/A
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14 Feb 20
ImmunoGen, Inc.
12:38pm
8-K
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14 Feb 20
ImmunoGen Reports Recent Progress and 2019 Financial Results
6:36am
SC 13G/A
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14 Feb 20
Beneficial ownership report (amended)
12:00am
SC 13G/A
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13 Feb 20
Beneficial ownership report (amended)
2:58pm
SC 13G
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12 Feb 20
ImmunoGen, Inc.
3:03pm