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text: 144
  0001510720
  XXXXXXXX
  LIVE
  0000855654
  ImmunoGen, Inc.
  000-17999
  830 WINTER ST
  WALTHAM
  MA
  02451
  (781)895-0600
  Wingrove Theresa
  Officer
  Common Stock
  Merrill Lynch
  225 Liberty St
  Floor 37
  New York
  NY
  10281
  12027
  352444.57
  266264274
  02/05/2024
  NASDAQ
  Common Stock
  02/03/2024
  Vesting of restricted stock unit award
  ImmunoGen, Inc.
  N
  12027
  02/03/2024
  Granted as part of issuer equity compensation plan
  N
  Theresa Wingrove
  830 WINTER ST
  WALTHAM
  MA
  02451
  Common Stock
  09/15/2023
  192013
  2965492.05
  Theresa Wingrove
  830 WINTER ST
  WALTHAM
  MA
  02451
  Common Stock
  10/16/2023
  192004
  2764597.49
  Theresa Wingrove
  830 WINTER ST
  WALTHAM
  MA
  02451
  Common Stock
  11/07/2023
  19517
  325081.08
  Theresa Wingrove
  830 WINTER ST
  WALTHAM
  MA
  02451
  Common Stock
  11/15/2023
  166725
  2643143.36
  Theresa Wingrove
  830 WINTER ST
  WALTHAM
  MA
  02451
  Common Stock
  11/29/2023
  6792
  113156.72
  Theresa Wingrove
  830 WINTER ST
  WALTHAM
  MA
  02451
  Common Stock
  11/30/2023
  164424
  4759955.37
  Theresa Wingrove
  830 WINTER ST
  WALTHAM
  MA
  02451
  Common Stock
  12/15/2023
  117445
  3452459.24
  Theresa Wingrove
  830 WINTER ST
  WALTHAM
  MA
  02451
  Common Stock
  01/16/2024
  187667
  5561602.04
  02/05/2024
  06/13/2023
  Theresa Wingrove