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NASDAQ: MRSN
Mersana Therapeutics Inc Stock Ownership - Who owns Mersana Therapeutics?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Mersana Therapeutics Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Mohan BalaSVP Chief Development Officer2025-10-2777$9.90
$762.30Sell
Martin H. Huber Jr.President CEO2025-09-122,012$7.31
$14.71kSell
Anna ProtopapasDirector2025-01-168,637$0.58
$5.01kSell
Mohan BalaSVP Chief Development Officer2025-01-165,939$0.58
$3.44kSell
Alejandra CarvajalSVP Chief Legal Officer2025-01-165,096$0.58
$2.96kSell
Brian DeschuytnerSVP COO CFO2025-01-168,470$0.58
$4.91kSell
Martin H. Huber Jr.President CEO2025-01-164,514$0.58
$2.62kSell
Timothy B. LowingerSVP Chief Sci.Tech. Officer2025-01-168,048$0.58
$4.67kSell
Ashish MandeliaVP Chief Accounting Officer2025-01-163,554$0.58
$2.06kSell
Alejandra CarvajalSVP Chief Legal Officer2025-01-15952$0.63
$599.76Sell

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Net Insider Buy/Sell (L12M) Ownership

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MRSN Shareholders

What type of owners hold Mersana Therapeutics Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Ecor1 Capital LLC614.01%30,692,688$892.39MInsider
Anthony A. Florence Jr.282.33%14,113,128$410.34MInsider
Patrick J. Kerins282.14%14,103,252$410.05MInsider
Forest Baskett278.75%13,934,092$405.13MInsider
Scott D. Sandell278.72%13,932,603$405.09MInsider
Peter W. Sonsini278.50%13,921,527$404.77MInsider
David M. Mott250.02%12,498,022$363.38MInsider
Crossover I. Scsp Nextech241.41%12,067,246$350.86MInsider
Andrew A. F. Hack173.61%8,678,140$252.32MInsider
Ravi Viswanathan162.84%8,140,138$236.67MInsider

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MRSN vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MRSN1.80%98.20%Net SellingNet Selling
PLX9.25%90.75%Net BuyingNet Buying
CRBP37.52%62.48%Net SellingNet Selling
CGEN13.31%0.00%
CDXS47.13%52.87%Net SellingNet Selling
View Top Biotech Stocks

Mersana Therapeutics Stock Ownership FAQ

Who owns Mersana Therapeutics?

Mersana Therapeutics (NASDAQ: MRSN) is owned by 63.70% institutional shareholders, 3,484.46% Mersana Therapeutics insiders, and 0.00% retail investors. Ecor1 Capital LLC is the largest individual Mersana Therapeutics shareholder, owning 30.69M shares representing 614.01% of the company. Ecor1 Capital LLC's Mersana Therapeutics shares are currently valued at $892.39M.

If you're new to stock investing, here's how to buy Mersana Therapeutics stock.
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