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Genmab Completes Acquisition of Merus, Expanding Cancer Drug Development

Merus acquired by Genmab

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Acquired

Merus

Biotechnology Research

Undisclosed amount

September 29, 2025

Genmab logo
Acquirer

Genmab

Biotechnology Research

Genmab, a leading biopharmaceutical company, has acquired Merus, a biotechnology firm focused on developing cancer therapeutics, for an undisclosed amount. This corporate acquisition signifies Genmab's strategic move to expand its innovative pipeline and capabilities within the oncology space, taking full ownership of Merus's operations and intellectual property.

Merus is dedicated to creating best-in-class therapeutics designed to treat and potentially cure cancer patients. Its core expertise lies in the development of bispecific antibody therapies, known as Biclonics®. These proprietary molecules are engineered to simultaneously target tumors through multiple mechanisms, such as activating the immune system to eliminate cancer cells and directly inhibiting tumor cell growth and survival pathways. Merus, headquartered in The Netherlands with U.S. offices, has been listed on NASDAQ since 2016 and has successfully advanced several candidate drugs into clinical trials over the past decade.

This strategic acquisition is expected to significantly enhance Genmab's oncology pipeline and strengthen its formidable research and development capabilities, particularly in the realm of advanced bispecific antibodies. By integrating Merus's innovative Biclonics® platform and its portfolio of clinical-stage assets, Genmab aims to accelerate the discovery and development of novel cancer treatments. The move provides Genmab with a proven and highly differentiated technology for multi-pronged tumor attack, expanding its existing therapeutic modalities and intellectual property.

The combined entity is anticipated to leverage shared scientific expertise, development infrastructure, and commercial resources. This unification is poised to accelerate the delivery of potentially life-changing bispecific antibody therapies, ultimately aiming to improve outcomes for cancer patients worldwide.

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Cancer Therapies
Biotech Innovations
Clinical Research Services
Healthcare Collaborations
Medical Technologies

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