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Filing Detail
Form S-3ASR - Automatic shelf registration statement of securities of well-known seasoned issuers:
SEC Accession No. 0001047469-18-001375
Filing Date
2018-03-07
Accepted
2018-03-07 17:32:16
Documents
8
Effectiveness Date
2018-03-07

Document Format Files

Seq Description Document Type Size
1 S-3ASR a2234761zs-3asr.htm S-3ASR 202528
2 EX-4.7 a2234761zex-4_7.htm EX-4.7 461827
3 EX-4.8 a2234761zex-4_8.htm EX-4.8 456284
4 EX-5.1 a2234761zex-5_1.htm EX-5.1 40143
5 EX-12.1 a2234761zex-12_1.htm EX-12.1 22013
6 EX-23.1 a2234761zex-23_1.htm EX-23.1 4127
7 G324281.JPG g324281.jpg GRAPHIC 16242
8 G76532KII001.GIF g76532kii001.gif GRAPHIC 2753
  Complete submission text file 0001047469-18-001375.txt   1214324
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: 0630
Type: S-3ASR | Act: 33 | File No.: 333-223507 | Film No.: 18674299
SIC: 2834 Pharmaceutical Preparations