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BAKER BROS. ADVISORS LP
> IMGN
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | ImmunoGen, Inc. | IMGN | 1,520,097 | 1,520,097 | 28,684,230,000 | 28,684,230,000 | $18,870.00 |
| 06/30/2018 | ImmunoGen, Inc. | IMGN | 0 | -2,563,489 | 0 | -16,432,000 | |
| 12/31/2017 | ImmunoGen, Inc. | IMGN | 2,563,489 | -125,000 | 16,432,000 | -4,135,000 | $6.41 |
| 09/30/2017 | ImmunoGen, Inc. | IMGN | 2,688,489 | -326,864 | 20,567,000 | -872,000 | $7.65 |
| 06/30/2017 | ImmunoGen, Inc. | IMGN | 3,015,353 | 0 | 21,439,000 | 9,770,000 | $7.11 |
| 03/31/2017 | ImmunoGen, Inc. | IMGN | 3,015,353 | 0 | 11,669,000 | 5,518,000 | $3.87 |
| 12/31/2016 | ImmunoGen, Inc. | IMGN | 3,015,353 | 0 | 6,151,000 | -1,930,000 | $2.04 |
| 09/30/2016 | ImmunoGen, Inc. | IMGN | 3,015,353 | 0 | 8,081,000 | -1,206,000 | $2.68 |
| 06/30/2016 | ImmunoGen, Inc. | IMGN | 3,015,353 | -1,437,092 | 9,287,000 | -28,648,000 | $3.08 |
| 03/31/2016 | ImmunoGen, Inc. | IMGN | 4,452,445 | 0 | 37,935,000 | -22,485,000 | $8.52 |
| 12/31/2015 | ImmunoGen, Inc. | IMGN | 4,452,445 | 4,088,166 | 60,420,000 | 57,466,000 | $13.57 |
| 09/30/2015 | ImmunoGen, Inc. | IMGN | 3,548,040 | 3,183,761 | 34,061,000 | 31,107,000 | $9.60 |
| 06/30/2015 | ImmunoGen, Inc. | IMGN | 2,320,424 | 1,956,145 | 33,368,000 | 30,414,000 | $14.38 |
| 03/31/2015 | ImmunoGen, Inc. | IMGN | 999,496 | 635,217 | 8,945,000 | 5,991,000 | $8.95 |
| 09/30/2009 | ImmunoGen, Inc. | IMGN | 364,279 | -139,955 | 2,954,000 | -1,392,000 | $8.11 |
| 06/30/2009 | ImmunoGen, Inc. | IMGN | 504,234 | 0 | 4,346,000 | 766,000 | $8.62 |
| 03/31/2009 | ImmunoGen, Inc. | IMGN | 504,234 | 900 | 3,580,000 | 1,421,000 | $7.10 |
| 12/31/2008 | ImmunoGen, Inc. | IMGN | 503,334 | 503,334 | 2,159,000 | 2,159,000 | $4.29 |
| 09/30/2008 | ImmunoGen, Inc. | IMGN | 503,334 | 600 | 2,471,000 | 933,000 | $4.91 |
| 06/30/2008 | ImmunoGen, Inc. | IMGN | 502,734 | 223,556 | 1,538,000 | 539,000 | $3.06 |
| 03/31/2008 | ImmunoGen, Inc. | IMGN | 279,178 | 0 | 999,000 | -160,000 | $3.58 |
| 12/31/2007 | ImmunoGen, Inc. | IMGN | 279,178 | -5,922 | 1,159,000 | -167,000 | $4.15 |
| 09/30/2007 | ImmunoGen, Inc. | IMGN | 285,100 | 0 | 1,326,000 | -256,000 | $4.65 |
| 06/30/2007 | ImmunoGen, Inc. | IMGN | 285,100 | 122,000 | 1,582,000 | 801,000 | $5.55 |
| 03/31/2007 | ImmunoGen, Inc. | IMGN | 163,100 | 163,100 | 781,000 | 781,000 | $4.79 |
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