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text: 144
  0001691868
  XXXXXXXX
  LIVE
  0000855654
  ImmunoGen, Inc.
  000-17999
  830 WINTER ST
  WALTHAM
  MA
  02451
  (781)895-0600
  Berkenblit Anna
  Officer
  Common Stock
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  225 Liberty St
  Floor 37
  New York
  NY
  10281
  100000
  1609336.80
  248943426
  09/13/2023
  NASDAQ
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  09/13/2023
  Exercise of employee stock options
  ImmunoGen, Inc.
  N
  100000
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  N
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  WALTHAM
  MA
  02451
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