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Schedule 13G/A

IMGNEUR Schedule 13G/A filing by BlackRock

BlackRock reported beneficial ownership of 21.8M shares, representing 8.2% of IMMUNOGEN INC in this filing.

FiledJan 25, 2024
Ownership dateDec 31, 2023
Reported shares21.8M
Reported ownership8.2%
Ownership details

Voting and dispositive power reported in the filing

These figures describe the reporting filer’s disclosed voting and investment authority. They should be read together with the reported share count and percentage.

Sole voting power 21.8M
Shared voting power 21.8M
Sole dispositive power 21.8M
Shared dispositive power 21.8M
Source

Original filing and accession

Use the SEC filing as the primary source when you need the complete disclosure, footnotes, exhibits, or reporting-person details.

Reporting filer
BlackRock
CIK
CIK0001364742
Accession
0001086364-24-003747
Form
Schedule 13G/A
Open SEC filing View IMGNEUR ownership history
Read the filing in context

Understand what a Schedule 13 filing does—and does not—tell you.

How to read a Schedule 13G → Does a 13G mean the shares were just bought? → Filing date vs. ownership date →