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FIRST MANHATTAN CO. LLC.
> IMGN
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | ImmunoGen, Inc. | IMGN | 1,707,500 | 1,700,000 | 32,220,525,000 | 32,191,725,000 | $18,870.00 |
| 03/31/2023 | ImmunoGen, Inc. | IMGN | 7,500 | 0 | 28,800,000 | -8,400,000 | $3,840.00 |
| 12/31/2022 | ImmunoGen, Inc. | IMGN | 7,500 | 0 | 37,200,000 | 37,165,000 | $4,960.00 |
| 09/30/2022 | ImmunoGen, Inc. | IMGN | 7,500 | 0 | 35,000 | 2,000 | $4.67 |
| 06/30/2022 | ImmunoGen, Inc. | IMGN | 7,500 | 0 | 33,000 | -2,000 | $4.40 |
| 03/31/2022 | ImmunoGen, Inc. | IMGN | 7,500 | -951,932 | 35,000 | -7,083,000 | $4.67 |
| 12/31/2021 | ImmunoGen, Inc. | IMGN | 959,432 | 951,886 | 7,118,000 | 7,076,000 | $7.42 |
| 09/30/2021 | ImmunoGen, Inc. | IMGN | 7,546 | 0 | 42,000 | -7,000 | $5.57 |
| 06/30/2021 | ImmunoGen, Inc. | IMGN | 7,546 | 0 | 49,000 | -12,000 | $6.49 |
| 03/31/2021 | ImmunoGen, Inc. | IMGN | 7,546 | 0 | 61,000 | 13,000 | $8.08 |
| 12/31/2020 | ImmunoGen, Inc. | IMGN | 7,546 | -44 | 48,000 | 21,000 | $6.36 |
| 09/30/2020 | ImmunoGen, Inc. | IMGN | 7,590 | 44 | 27,000 | -7,000 | $3.56 |
| 06/30/2020 | ImmunoGen, Inc. | IMGN | 7,546 | 0 | 34,000 | 9,000 | $4.51 |
| 03/31/2020 | ImmunoGen, Inc. | IMGN | 7,546 | 0 | 25,000 | -13,000 | $3.31 |
| 12/31/2019 | ImmunoGen, Inc. | IMGN | 7,546 | 0 | 38,000 | 20,000 | $5.04 |
| 09/30/2019 | ImmunoGen, Inc. | IMGN | 7,546 | 0 | 18,000 | 2,000 | $2.39 |
| 06/30/2019 | ImmunoGen, Inc. | IMGN | 7,546 | -1,500 | 16,000 | -8,000 | $2.12 |
| 03/31/2019 | ImmunoGen, Inc. | IMGN | 9,046 | 0 | 24,000 | -19,000 | $2.65 |
| 12/31/2018 | ImmunoGen, Inc. | IMGN | 9,046 | 1,500 | 43,000 | -28,000 | $4.75 |
| 09/30/2018 | ImmunoGen, Inc. | IMGN | 7,546 | 4,500 | 71,000 | 42,000 | $9.41 |
| 06/30/2018 | ImmunoGen, Inc. | IMGN | 3,046 | 0 | 29,000 | -3,000 | $9.52 |
| 03/31/2018 | ImmunoGen, Inc. | IMGN | 3,046 | -351 | 32,000 | 11,000 | $10.51 |
| 12/31/2017 | ImmunoGen, Inc. | IMGN | 3,397 | 351 | 21,000 | -2,000 | $6.18 |
| 09/30/2017 | ImmunoGen, Inc. | IMGN | 3,046 | 0 | 23,000 | 22,979 | $7.55 |
| 06/30/2017 | ImmunoGen, Inc. | IMGN | 3,046 | 0 | 21 | -10,979 | $0.01 |
| 03/31/2017 | ImmunoGen, Inc. | IMGN | 3,046 | 0 | 11,000 | 5,000 | $3.61 |
| 12/31/2016 | ImmunoGen, Inc. | IMGN | 3,046 | 0 | 6,000 | -2,000 | $1.97 |
| 09/30/2016 | ImmunoGen, Inc. | IMGN | 3,046 | 0 | 8,000 | -33,000 | $2.63 |
| 06/30/2016 | ImmunoGen, Inc. | IMGN | 3,046 | 0 | 9,000 | -32,000 | $2.95 |
| 03/31/2016 | ImmunoGen, Inc. | IMGN | 3,046 | 0 | 25,000 | -16,000 | $8.21 |
| 12/31/2015 | ImmunoGen, Inc. | IMGN | 3,046 | 0 | 41,000 | 12,000 | $13.46 |
| 09/30/2015 | ImmunoGen, Inc. | IMGN | 3,046 | 3,046 | 29,000 | 29,000 | $9.52 |
| 06/30/2015 | ImmunoGen, Inc. | IMGN | 3,046 | 3,046 | 43,000 | 43,000 | $14.12 |
| 03/31/2015 | ImmunoGen, Inc. | IMGN | 3,046 | 3,046 | 27,000 | 27,000 | $8.86 |
| 12/31/2014 | ImmunoGen, Inc. | IMGN | 3,046 | 3,046 | 18,000 | 18,000 | $5.91 |
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