Genmab secures $6 billion debt for Merus acquisition

10 Nov 2025, 15:59GMAB.COSource

Genmab said Monday it is raising $6 billion in debt through a combination of notes and loans to help fund its pending acquisition of biotechnology company Merus.

The financing package includes a private offering of $2.5 billion in senior notes and the syndication of new and existing credit facilities totaling $3.5 billion, according to the company.

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Genmab intends to use the net proceeds, along with cash on hand, to fund the approximately $8 billion all-cash purchase of Merus and related expenses.

The Danish drugmaker announced in September its agreement to acquire Merus, its largest deal to date, to gain control of the company's promising late-stage cancer therapy, petosemtamab.

The deal is a key part of Genmab's strategy to build a pipeline of wholly-owned drugs and reduce its reliance on royalty revenue.

Genmab commenced a tender offer for all of Merus's shares in October, which is scheduled to expire in December.

The company said the notes will be offered to qualified institutional buyers and non-U.S. persons and will not be registered under the U.S. Securities Act.

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