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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0001104659-16-160756
Filing Date
2016-12-06
Accepted
2016-12-06 09:56:03
Documents
1

Document Format Files

Seq Description Document Type Size
1 SC 13G/A a16-22717_1sc13ga.htm SC 13G/A 70588
  Complete submission text file 0001104659-16-160756.txt   71992
Mailing Address 177 EAST COLORADO BLVD. 11TH FLOOR PASADENA CA 91105
Business Address 177 EAST COLORADO BLVD. 11TH FLOOR PASADENA CA 91105 6263049222
PRIMECAP MANAGEMENT CO/CA/ (Filed by) CIK: 0000763212 (see all company filings)

IRS No.: 953868081
Type: SC 13G/A

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.: 162035383
SIC: 2834 Pharmaceutical Preparations