Institutional shares held 101 Million
77.2K calls
453K puts
Total value of holdings $56.7M
$43K calls
$253K puts
Market Cap $54.4M
97,169,296 Shares Out.
Institutional ownership 104.15%
# of Institutions 136


Latest Institutional Activity in MRSN

Top Purchases

Q4 2024
Novo Holdings Shares Held: 4.25M ($2.38M)
Q4 2024
Catalio Capital Management, LP Shares Held: 1.71M ($955K)
Q4 2024
683 Capital Management, LLC Shares Held: 900K ($504K)
Q4 2024
Sphera Funds Management Ltd. Shares Held: 690K ($387K)
Q4 2024
Millennium Management LLC Shares Held: 796K ($446K)

Top Sells

Q4 2024
Eco R1 Capital, LLC Shares Held: 11.3M ($6.34M)
Q4 2024
Citadel Advisors LLC Shares Held: 421K ($236K)
Q4 2024
Goldman Sachs Group Inc Shares Held: 802K ($449K)
Q4 2024
Vr Adviser, LLC Shares Held: 10.3M ($5.74M)
Q4 2024
Exome Asset Management LLC Shares Held: 173K ($96.8K)

About MRSN

Mersana Therapeutics, Inc., a clinical stage biopharmaceutical company, develops antibody drug conjugates (ADC) for cancer patients with unmet need. It develops XMT-1592, a Dolasynthen ADC targeting NaPi2b-expressing tumor cells, which is in phase I clinical trial for the treatment of ovarian cancer and NSCLC adenocarcinoma. The company also develops XMT-1660, a B7-H4-targeted Dolasynthen ADC candidate; and XMT-2056, an immunosynthen development candidate. It has a strategic research and development partnerships with Merck KGaA and Asana BioSciences, LLC for the development of ADC product candidates utilizing Fleximer. The company was formerly known as Nanopharma Corp. and changed its name to Mersana Therapeutics, Inc. in November 2005. Mersana Therapeutics, Inc. was incorporated in 2001 and is headquartered in Cambridge, Massachusetts.


Insider Transactions at MRSN

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
618K Shares
From 7 Insiders
Exercise of conversion of derivative security 618K shares
Sell / Disposition
8.24M Shares
From 8 Insiders
Other acquisition or disposition 8.04M shares
Open market or private sale 199K shares

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