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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0001104659-15-010256
Filing Date
2015-02-13
Accepted
2015-02-13 14:35:01
Documents
1

Document Format Files

Seq Description Document Type Size
1 SC 13G/A a15-4369_28sc13ga.htm SC 13G/A 70848
  Complete submission text file 0001104659-15-010256.txt   72216
Mailing Address 225 SOUTH LAKE AVE SUITE 400 PASADENA CA 91101
Business Address 225 SOUTH LAKE AVE STE 400 PASADENA CA 91101-3005 8183049222
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.: 15612865
SIC: 2834 Pharmaceutical Preparations