DEAN J. MITCHELL - 22 Sep 2023 Form 4/A Insider Report for ImmunoGen, Inc.

Role
Director
Signature
/s/ Renee Lentini, Attorney-in-Fact
Issuer symbol
N/A
Transactions as of
22 Sep 2023
Net transactions value
+$147,000
Form type
4/A
Filing time
19 Dec 2023, 19:00:22 UTC
Date Of Original Report
26 Sep 2023
Previous filing
16 Jun 2023
Next filing
12 Feb 2024
SEC
View on sec.gov

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction IMGN Common Stock Options Exercise $147,000 +10,000 +11% $14.70 103,000 22 Sep 2023 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Due to clerical error, this amendment to Form 4 is being filed to correct the number of shares beneficially owned following the reported transaction.