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D. E. Shaw & Co., Inc.
> MRSN
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Mersana Therapeutics, Inc. | MRSN | 985,739 | -1,350,200 | 3,243,081,000 | -10,445,522,000 | $3,290.00 |
| 12/31/2022 | Mersana Therapeutics, Inc. | MRSN | 2,335,939 | -288,284 | 13,688,603,000 | 13,670,864,000 | $5,860.00 |
| 09/30/2022 | Mersana Therapeutics, Inc. | MRSN | 2,624,223 | 646,293 | 17,739,000 | 8,601,000 | $6.76 |
| 06/30/2022 | Mersana Therapeutics, Inc. | MRSN | 1,977,930 | -112,936 | 9,138,000 | 795,000 | $4.62 |
| 03/31/2022 | Mersana Therapeutics, Inc. | MRSN | 2,090,866 | 1,445,963 | 8,343,000 | 4,332,000 | $3.99 |
| 12/31/2021 | Mersana Therapeutics, Inc. | MRSN | 644,903 | 596,298 | 4,011,000 | 3,553,000 | $6.22 |
| 09/30/2021 | Mersana Therapeutics, Inc. | MRSN | 48,605 | 8,520 | 458,000 | -86,000 | $9.42 |
| 06/30/2021 | Mersana Therapeutics, Inc. | MRSN | 40,085 | -113,986 | 544,000 | -1,949,000 | $13.57 |
| 03/31/2021 | Mersana Therapeutics, Inc. | MRSN | 154,071 | -389,804 | 2,493,000 | -11,979,000 | $16.18 |
| 12/31/2020 | Mersana Therapeutics, Inc. | MRSN | 543,875 | -207,851 | 14,472,000 | 475,000 | $26.61 |
| 09/30/2020 | Mersana Therapeutics, Inc. | MRSN | 751,726 | -274,224 | 13,997,000 | -10,010,000 | $18.62 |
| 06/30/2020 | Mersana Therapeutics, Inc. | MRSN | 1,025,950 | 1,002,801 | 24,007,000 | 23,872,000 | $23.40 |
| 03/31/2020 | Mersana Therapeutics, Inc. | MRSN | 23,149 | -124,998 | 135,000 | -713,000 | $5.83 |
| 12/31/2019 | Mersana Therapeutics, Inc. | MRSN | 148,147 | -93,419 | 848,000 | 466,000 | $5.72 |
| 09/30/2019 | Mersana Therapeutics, Inc. | MRSN | 241,566 | -3,250 | 382,000 | -609,000 | $1.58 |
| 06/30/2019 | Mersana Therapeutics, Inc. | MRSN | 244,816 | 130,204 | 991,000 | 388,000 | $4.05 |
| 03/31/2019 | Mersana Therapeutics, Inc. | MRSN | 114,612 | 114,612 | 603,000 | 603,000 | $5.26 |
| 03/31/2018 | Mersana Therapeutics, Inc. | MRSN | 0 | -17,034 | 0 | -280,000 | |
| 12/31/2017 | Mersana Therapeutics, Inc. | MRSN | 17,034 | 17,034 | 280,000 | 280,000 | $16.44 |
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