| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IMGN | Common Stock | Award | $21,245 | +1,327 | $16.01 | 1,327 | 29 Dec 2023 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | These shares were purchased due to participation by the reporting individual in the ImmunoGen Employee Stock Purchase Plan (the ESPP). It pertains to the ESPP purchase period from July 1, 2023 through December 31, 2023. |
| F2 | In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's common stock on July 3, 2023. |