Mersana Therapeutics Ownership | Who Owns Mersana Therapeutics?
Mersana Therapeutics Ownership Summary
Mersana Therapeutics is owned by 82.62% institutional investors, 1.51% insiders, and 15.87% retail investors. Nextech invest is the largest institutional shareholder, holding 9.83% of MRSN shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 2.78% of its assets in Mersana Therapeutics shares.
MRSN Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Mersana Therapeutics | 82.62% | 1.51% | 15.87% |
| Sector | Healthcare Stocks | 57.39% | 9.93% | 32.68% |
| Industry | Biotech Stocks | 68.48% | 9.65% | 21.87% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Nextech invest | 12.07M | 9.83% | $17.26M |
| Ecor1 capital | 11.33M | 9.23% | $16.20M |
| Vr adviser | 10.26M | 8.36% | $14.67M |
| Blackrock funding, inc. /de | 9.21M | 7.50% | $13.16M |
| Bain capital life sciences investors | 8.66M | 7.06% | $12.39M |
| Blackrock | 8.38M | 6.90% | $16.85M |
| Vanguard group | 7.06M | 5.75% | $10.09M |
| Novo | 4.25M | 3.46% | $6.08M |
| Rock springs capital management lp | 3.43M | 2.80% | $4.91M |
| State street | 2.68M | 2.21% | $5.39M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Nextech invest | 12.07M | 2.80% | $17.26M |
| Acuta capital partners | 1.12M | 1.61% | $1.60B |
| Bain capital life sciences investors | 8.66M | 1.46% | $12.39M |
| Vr adviser | 10.26M | 1.01% | $14.67M |
| Ecor1 capital | 11.33M | 0.61% | $16.20M |
| 5am venture management | 1.30M | 0.45% | $1.87M |
| Novo | 4.25M | 0.37% | $6.08M |
| Healthinvest partners ab | 538.62K | 0.36% | $764.84K |
| Octagon capital advisors lp | 992.00K | 0.23% | $1.42M |
| Exome asset management | 172.92K | 0.19% | $249.72K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Novo | 4.25M | 0.37% | 4.25M |
| 683 capital management | 900.00K | 0.08% | 717.21K |
| Sphera funds management | 690.27K | 0.18% | 690.27K |
| Blackrock funding, inc. /de | 9.21M | 0.00% | 583.32K |
| Millennium management | 795.97K | 0.00% | 536.19K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Ecor1 capital | 11.33M | 0.61% | -8.04M |
| State street | 2.68M | 0.00% | -2.82M |
| Cormorant asset management, lp | - | - | -2.60M |
| Silverarc capital management | - | - | -1.59M |
| Goldman sachs group | 802.37K | 0.00% | -1.16M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Novo | 4.25M | 0.37% | 4.25M | $6.08M |
| Sphera funds management | 690.27K | 0.18% | 690.27K | $987.09K |
| Mackenzie financial | 91.96K | 0.00% | 91.96K | $129.69K |
| Susquehanna fundamental investments | 91.85K | 0.00% | 91.85K | $131.35K |
| Sei investments | 69.53K | 0.00% | 69.53K | $99.42K |
Sold Out
| Holder | Change |
|---|---|
| Capital performance advisors llp | -11.00 |
| Nelson, van denburg & campbell wealth management group | -22.00 |
| Jones financial companies lllp | -200.00 |
| Nordwand advisors | -1.50K |
| Pacer advisors | -1.72K |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2024 | 130 | 7.44% | 101,397,402 | -12.65% | 82 | 0.92% | 58 | 13.73% | 39 | 21.88% |
| Sep 30, 2024 | 121 | -3.20% | 116,077,343 | 1.64% | 94 | 1.07% | 52 | -17.46% | 32 | -11.11% |
| Jun 30, 2024 | 125 | -2.34% | 114,205,327 | -2.80% | 94 | 0.99% | 63 | -12.50% | 36 | - |
| Mar 31, 2024 | 128 | 17.43% | 117,492,765 | 3.79% | 97 | 1.10% | 72 | 41.18% | 36 | 2.86% |
| Dec 31, 2023 | 109 | -18.05% | 113,199,475 | -0.47% | 93 | 0.97% | 51 | -16.39% | 35 | -20.45% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 3.47M | 2.78% | - |
| Vanguard Total Stock Mkt Idx Inv | 3.47M | 2.78% | - |
| iShares Russell 2000 ETF | 2.49M | 2.00% | -21.61K |
| Vanguard Institutional Extnd Mkt Idx Tr | 1.52M | 1.22% | - |
| Fidelity Small Cap Index | 1.14M | 0.91% | -21.33K |
| State St Russell Sm/Mid Cp® Indx SL Cl I | 839.38K | 0.67% | - |
| State St Russell Sm/Mid Cp® Indx NL Cl C | 839.38K | 0.67% | - |
| Vanguard Explorer Inv | 614.97K | 0.50% | - |
| HealthInvest Sustainable Healthcare E | 538.62K | 0.44% | - |
| iShares Russell 2000 Growth ETF | 523.40K | 0.42% | -2.49K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jan 16, 2025 | Mandelia Ashish | VP, Chief Accounting Officer | Sell | $2.06K |
| Jan 16, 2025 | Protopapas Anna | - | Sell | $5.01K |
| Jan 16, 2025 | Lowinger Timothy B | SVP, Chief Sci.&Tech. Officer | Sell | $4.67K |
| Jan 16, 2025 | Huber Martin H. Jr. | President, CEO | Sell | $2.62K |
| Jan 16, 2025 | DeSchuytner Brian | SVP, COO & CFO | Sell | $4.91K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q1 | - | 18 |
| 2024 Q4 | - | 11 |
| 2024 Q3 | - | 1 |
| 2024 Q2 | - | - |
| 2024 Q1 | - | 7 |
MRSN Ownership FAQ
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