Institutional shares held 64.1 Million
1.65M calls
758K puts
Total value of holdings $6.15B
$159M calls
$72.7M puts
Market Cap $4.4B
45,878,200 Shares Out.
Institutional ownership 139.74%
# of Institutions 291


Latest Institutional Activity in MRUS

Top Purchases

Q3 2025
Hbk Investments L P Shares Held: 2.85M ($273M)
Q3 2025
Glazer Capital, LLC Shares Held: 1.62M ($155M)
Q3 2025
Goldman Sachs Group Inc Shares Held: 1.2M ($115M)
Q3 2025
Omni Event Management LTD Shares Held: 1.05M ($101M)
Q3 2025
Magnetar Financial LLC Shares Held: 1.05M ($100M)

Top Sells

Q3 2025
Wellington Management Group LLP Shares Held: 459K ($44M)
Q3 2025
Holocene Advisors, LP Shares Held: 167K ($16M)
Q3 2025
Rtw Investments, LP Shares Held: 2.03M ($194M)
Q3 2025
Franklin Resources Inc Shares Held: 502K ($48.1M)
Q3 2025
Driehaus Capital Management LLC Shares Held: 178K ($17M)

About MRUS

Merus N.V., a clinical-stage immuno-oncology company, engages in the discovery and development of bispecific antibody therapeutics in the Netherlands. Its bispecific antibody candidate pipeline includes Zenocutuzumab (MCLA-128), which is in a phase 2 clinical trials for the treatment of patients with metastatic breast cancer, as well as in Phase 1/2 clinical trials for the treatment of solid tumors that harbor Neuregulin 1. The company is also developing MCLA-158, which is in a phase I clinical trial for the treatment of solid tumors; MCLA-145, which is in phase 1 clinical trials for the treatment of solid tumors; MCLA-129, which is in phase 1/2 clinical trials for the treatment of patients with advanced non-small cell lung cancer and other solid tumors; and ONO-4685 that is Phase 1 clinical trial to treat relapsed/refractory T cell lymphoma. In addition, it has collaboration agreement with Betta Pharmaceuticals Co. Ltd for the research and development of stage bispecific antibody candidates include MCLA-129; and collaboration with Incyte Corporation for the development of MCLA-145. The company was incorporated in 2003 and is headquartered in Utrecht, the Netherlands.


Insider Transactions at MRUS

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
228K Shares
From 4 Insiders
Bona fide gift 81.1K shares
Exercise of conversion of derivative security 147K shares
Sell / Disposition
461K Shares
From 6 Insiders
Bona fide gift 196K shares
Disposition due to a tender of shares in a change of control transaction 168K shares
Open market or private sale 96.5K shares

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