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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0001104659-23-021828
Filing Date
2023-02-14
Accepted
2023-02-14 16:45:49
Documents
1
Group Members
PETER KOLCHINSKYRA CAPITAL HEALTHCARE FUND, L.P.RAJEEV SHAH

Document Format Files

Seq Description Document Type Size
1 SC 13G/A tm236221d36_sc13ga.htm SC 13G/A 79781
  Complete submission text file 0001104659-23-021828.txt   81513
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.: 23630755
SIC: 2834 Pharmaceutical Preparations

Mailing Address 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116
Business Address 200 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 617-778-2500
RA CAPITAL MANAGEMENT, L.P. (Filed by) CIK: 0001346824 (see all company filings)

IRS No.: 830406777 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A