Type / Class
Equity / Common Stock, par value $0.0001 per share
Shares outstanding
125M
Number of holders
126
Total 13F shares, excl. options
114M
Shares change
-381K
Total reported value, excl. options
$144M
Value change
-$76.7M
Put/Call ratio
0.05
Number of buys
57
Number of sells
-88
Price
$1.27

Significant Holders of Mersana Therapeutics, Inc. - Common Stock, par value $0.0001 per share (MRSN) as of Q3 2023

195 filings reported holding MRSN - Mersana Therapeutics, Inc. - Common Stock, par value $0.0001 per share as of Q3 2023.
Mersana Therapeutics, Inc. - Common Stock, par value $0.0001 per share (MRSN) has 126 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC). These institutions hold a total of 114M shares of 125M outstanding shares and own 91.21% of the company stock.
Largest 10 shareholders include EcoR1 Capital, LLC (19.4M shares), VR Adviser, LLC (11.3M shares), Bain Capital Life Sciences Investors, LLC (8.66M shares), BlackRock Inc. (7.97M shares), VANGUARD GROUP INC (6.19M shares), Bellevue Group AG (5.22M shares), Balyasny Asset Management L.P. (5.04M shares), SILVERARC CAPITAL MANAGEMENT, LLC (5M shares), Rock Springs Capital Management LP (3.4M shares), and Affinity Asset Advisors, LLC (2.85M shares).
This table shows the top 126 institutional shareholders of the company equity. This data is sourced directly from the SEC via 13F filings.
Investor Option Weight % Change % Value $ * Price $ Shares Share Change Activity Report Period
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.