MERSANA THERAPEUTICS INC (MRSN)
Institutional ownership reported to the SEC as of Q1 2026, across 30 quarters.
1
Reporting holders
$87
Reported value
0.0%
Held as options
-48
Holder change
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| IFP Advisors, Inc | $87 | 3 | 0.00% | 3q | HELD |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q1 2026 | 1 | $87 | 3 | 0 | 0 | 0 | 0.0% |
| Q4 2025 | 49 | $63.2M | 2,130,647 | 17 | 3 | 21 | 2.8% |
| Q3 2025 | 47 | $23.6M | 3,039,216 | 43 | 0 | 5 | 0.3% |
| Q2 2025 | 78 | $21.8M | 73,824,590 | 12 | 22 | 25 | 0.1% |
| Q1 2025 | 102 | $29.1M | 84,647,785 | 24 | 20 | 30 | 0.1% |
| Q4 2024 | 124 | $150.2M | 103,641,598 | 21 | 27 | 39 | 1.4% |
| Q3 2024 | 108 | $226.6M | 119,099,169 | 12 | 33 | 30 | 0.7% |
| Q2 2024 | 113 | $234.0M | 115,441,352 | 16 | 37 | 33 | 0.9% |
| Q1 2024 | 117 | $552.5M | 122,730,743 | 37 | 30 | 29 | 0.5% |
| Q4 2023 | 98 | $271.7M | 116,199,389 | 20 | 32 | 25 | 0.7% |
| Q3 2023 | 115 | $143.8M | 112,003,514 | 19 | 32 | 37 | 1.1% |
| Q2 2023 | 143 | $369.8M | 106,807,559 | 40 | 49 | 38 | 5.2% |
| Q1 2023 | 133 | $383.1M | 91,504,140 | 24 | 40 | 37 | 2.2% |
| Q4 2022 | 124 | $478.7M | 81,580,670 | 15 | 55 | 26 | 0.2% |
| Q3 2022 | 149 | $625.3M | 92,473,388 | 40 | 62 | 25 | 0.0% |
| Q2 2022 | 123 | $408.3M | 88,318,917 | 18 | 49 | 35 | 0.1% |
| Q1 2022 | 128 | $323.2M | 80,893,704 | 20 | 48 | 35 | 0.1% |
| Q4 2021 | 123 | $439.0M | 70,405,203 | 30 | 44 | 21 | 0.3% |
| Q3 2021 | 110 | $651.1M | 68,748,975 | 11 | 43 | 31 | 0.4% |
| Q2 2021 | 132 | $961.6M | 70,570,132 | 17 | 50 | 39 | 0.4% |
| Q1 2021 | 135 | $1.2B | 70,073,700 | 17 | 50 | 43 | 1.8% |
| Q4 2020 | 156 | $1.9B | 68,955,760 | 33 | 53 | 47 | 1.0% |
| Q3 2020 | 137 | $1.3B | 68,707,693 | 25 | 53 | 38 | 1.0% |
| Q2 2020 | 135 | $1.6B | 65,832,152 | 61 | 50 | 24 | 0.6% |
| Q1 2020 | 82 | $236.1M | 40,483,165 | 23 | 32 | 14 | 0.0% |
| Q4 2019 | 69 | $206.2M | 35,981,968 | 12 | 23 | 19 | 0.0% |
| Q3 2019 | 75 | $60.8M | 38,481,183 | 5 | 31 | 22 | 0.0% |
| Q2 2019 | 77 | $162.1M | 40,030,382 | 20 | 32 | 12 | 0.0% |
| Q1 2019 | 65 | $194.4M | 36,955,904 | 21 | 26 | 7 | 0.0% |
| Q4 2018 | 48 | $70.5M | 17,289,030 | 1 | 0 | 3 | 0.0% |