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EcoR1 Capital, LLC
> SURF
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Surface Oncology, Inc. | SURF | 0 | -3,082,959 | 0 | -2,154,372,000 | |
| 03/31/2023 | Surface Oncology, Inc. | SURF | 3,082,959 | -841,754 | 2,154,372,000 | -1,063,893,000 | $698.80 |
| 12/31/2022 | Surface Oncology, Inc. | SURF | 3,924,713 | 0 | 3,218,265,000 | 3,214,183,000 | $820.00 |
| 09/30/2022 | Surface Oncology, Inc. | SURF | 3,924,713 | -728,287 | 4,082,000 | -3,549,000 | $1.04 |
| 06/30/2022 | Surface Oncology, Inc. | SURF | 4,653,000 | 0 | 7,631,000 | -6,049,000 | $1.64 |
| 03/31/2022 | Surface Oncology, Inc. | SURF | 4,653,000 | 4,653,000 | 13,680,000 | 13,680,000 | $2.94 |
| 03/31/2021 | Surface Oncology, Inc. | SURF | 0 | -48,558 | 0 | -448,676 | |
| 12/31/2020 | Surface Oncology, Inc. | SURF | 48,558 | -3,284,619 | 448,676 | -22,550,324 | $9.24 |
| 09/30/2020 | Surface Oncology, Inc. | SURF | 3,333,177 | -1,700,684 | 22,999,000 | -10,023,000 | $6.90 |
| 06/30/2020 | Surface Oncology, Inc. | SURF | 5,033,861 | 3,759,398 | 33,022,000 | 30,639,000 | $6.56 |
| 03/31/2020 | Surface Oncology, Inc. | SURF | 1,274,463 | -27,250 | 2,383,000 | -64,000 | $1.87 |
| 12/31/2019 | Surface Oncology, Inc. | SURF | 1,301,713 | -247,175 | 2,447,000 | 248,000 | $1.88 |
| 09/30/2019 | Surface Oncology, Inc. | SURF | 1,548,888 | -763,800 | 2,199,000 | -4,323,000 | $1.42 |
| 06/30/2019 | Surface Oncology, Inc. | SURF | 2,312,688 | 49,200 | 6,522,000 | -4,275,000 | $2.82 |
| 03/31/2019 | Surface Oncology, Inc. | SURF | 2,263,488 | 2,160 | 10,797,000 | 1,209,000 | $4.77 |
| 12/31/2018 | Surface Oncology, Inc. | SURF | 2,261,328 | 897,849 | 9,588,000 | -5,328,000 | $4.24 |
| 09/30/2018 | Surface Oncology, Inc. | SURF | 1,363,479 | 472,671 | 14,916,000 | 387,000 | $10.94 |
| 06/30/2018 | Surface Oncology, Inc. | SURF | 890,808 | 890,808 | 14,529,000 | 14,529,000 | $16.31 |
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