Holding/activity history for ImmunoGen Inc. (IMGN-OLD)
| Period | Shares | % of Portfolio | Activity | % Change to Portfolio | Reported Price |
| 2023 Q4 | 0 | 0 | Sell 100.00% | 0.55 | |
| 2023 Q3 | 183,000 | 0.55 | Buy | 0.55 | $15.87 |
| 2019 Q1 | 0 | 0 | Sell 100.00% | 0.64 | |
| 2018 Q4 | 675,000 | 0.64 | Buy | 0.64 | $4.80 |