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Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0001558370-20-007213
Filing Date
2020-06-03
Accepted
2020-06-03 08:36:24
Documents
3
Effectiveness Date
2020-06-03

Document Format Files

Seq Description Document Type Size
1 DEFA14A tmb-20200603xdefa14a.htm DEFA14A 71661
2 GRAPHIC tmb-20200603xdefa14ag001.jpg GRAPHIC 5130
3 GRAPHIC tmb-20200603xdefa14ag002.jpg GRAPHIC 4273
  Complete submission text file 0001558370-20-007213.txt   85984
Mailing Address 830 WINTER ST WALTHAM MA 02451
Business Address 830 WINTER ST WALTHAM MA 02451 (781)895-0600
ImmunoGen, Inc. (Filer) CIK: 0000855654 (see all company filings)

IRS No.: 042726691 | State of Incorp.: MA | Fiscal Year End: 1231
Type: DEFA14A | Act: 34 | File No.: 000-17999 | Film No.: 20938994
SIC: 2834 Pharmaceutical Preparations