SEC 13F Intelligence

IMMUNOGEN INC

CUSIP 45253H101

Immunogen Inc has 1 institutional holders in Filings Flow’s 13F database, together reporting 1 shares worth $269 as of Q1 2026.

Institutional Holders
1
Q1 2026
Reported Value
$269
Ticker
unmapped
private placement or foreign
Quarters Tracked
23

Ownership Trend

Institutional holders
Q4 ’18: 170Q4 ’18Q1 ’19: 182Q2 ’19: 164Q3 ’19: 161Q3 ’19Q2 ’21: 194Q4 ’21: 201Q1 ’22: 186Q1 ’22Q2 ’22: 183Q3 ’22: 188Q4 ’22: 180Q4 ’22Q1 ’23: 173Q2 ’23: 247Q3 ’23: 255Q3 ’23Q4 ’23: 309Q1 ’24: 9Q2 ’24: 4Q2 ’24Q3 ’24: 3Q4 ’24: 1Q1 ’25: 2Q1 ’25Q2 ’25: 1Q3 ’25: 1Q4 ’25: 1Q4 ’25Q1 ’26: 1filingsflow.com
Total reported value
Q4 ’18: $837MQ4 ’18Q1 ’19: $600MQ2 ’19: $442MQ3 ’19: $551MQ3 ’19Q2 ’21: $2.1BQ4 ’21: $855MQ1 ’22: $536MQ1 ’22Q2 ’22: $544MQ3 ’22: $602MQ4 ’22: $652MQ4 ’22Q1 ’23: $512MQ2 ’23: $2.9BQ3 ’23: $2.5BQ3 ’23Q4 ’23: $6.1BQ1 ’24: $58MQ2 ’24: $49MQ2 ’24Q3 ’24: $33MQ4 ’24: $269Q1 ’25: $7MQ1 ’25Q2 ’25: $269Q3 ’25: $269Q4 ’25: $269Q4 ’25Q1 ’26: $269filingsflow.com

Holders

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Manager% of PortfolioValueSharesQuarter
HUNTINGTON NATIONAL BANK$18.1B AUM0.00%$2691Q1 2026

Holdings are reported up to 45 days after quarter end. Share counts are as filed and not adjusted for stock splits.