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Filing Detail
Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001144204-17-008851
Filing Date
2017-02-14
Accepted
2017-02-14 16:27:16
Documents
1
Group Members
BAKER BROS. ADVISORS (GP) LLCFELIX J. BAKERJULIAN C. BAKER

Document Format Files

Seq Description Document Type Size
1 SC 13G/A v459162_sc13ga.htm SC 13G/A 80775
  Complete submission text file 0001144204-17-008851.txt   82425
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: 0630
Type: SC 13G/A | Act: 34 | File No.: 005-40774 | Film No.: 17609144
SIC: 2834 Pharmaceutical Preparations

Mailing Address 667 MADISON AVE 21ST FLOOR NEW YORK NY 10065
Business Address 667 MADISON AVE 21ST FLOOR NEW YORK NY 10065 2123395600
BAKER BROS. ADVISORS LP (Filed by) CIK: 0001263508 (see all company filings)

IRS No.: 134093645 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A