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Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001348883-21-000017
Filing Date
2021-02-09
Accepted
2021-02-09 17:20:27
Documents
1

Document Format Files

Seq Description Document Type Size
1 immu20a12.htm SC 13G/A 82100
  Complete submission text file 0001348883-21-000017.txt   83734
Mailing Address 830 WINTER ST WALTHAM MA 02451
Business Address 830 WINTER ST WALTHAM MA 02451 (781)895-0600
ImmunoGen, Inc. (Subject) CIK: 0000855654 (see all company filings)

IRS No.: 042726691 | State of Incorp.: MA | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-40774 | Film No.: 21607902
SIC: 2834 Pharmaceutical Preparations

Mailing Address 620 8TH AVENUE NEW YORK NY 10018
Business Address 620 8TH AVENUE NEW YORK NY 10018 800-691-6959
Clearbridge Investments, LLC (Filed by) CIK: 0001348883 (see all company filings)

IRS No.: 010846058
Type: SC 13G/A