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ArrowMark Colorado Holdings LLC
> IMGN
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | ImmunoGen, Inc. | IMGN | 164,492 | 164,492 | 3,103,964,000 | 3,103,964,000 | $18,870.00 |
| 09/30/2019 | ImmunoGen, Inc. | IMGN | 0 | -1,046,376 | 0 | -2,271,000 | |
| 06/30/2019 | ImmunoGen, Inc. | IMGN | 1,046,376 | -1,746,975 | 2,271,000 | -5,299,000 | $2.17 |
| 03/31/2019 | ImmunoGen, Inc. | IMGN | 2,793,351 | -813,373 | 7,570,000 | -9,742,000 | $2.71 |
| 12/31/2018 | ImmunoGen, Inc. | IMGN | 3,606,724 | 1,678,774 | 17,312,000 | -946,000 | $4.80 |
| 09/30/2018 | ImmunoGen, Inc. | IMGN | 1,927,950 | 1,927,950 | 18,258,000 | 18,258,000 | $9.47 |
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