Genmab Acquires ProfoundBio for $1.8 Billion

AbbVie to Acquire ImmunoGen for $10.1 Billion

November 30, 2023

Biotechnology

AbbVie has entered into a definitive agreement to acquire ImmunoGen for $31.26 per share in cash, valuing the company at approximately $10.1 billion. The deal gives AbbVie commercial rights to ELAHERE (mirvetuximab soravtansine-gynx) and ImmunoGen's ADC pipeline, expanding AbbVie's oncology capabilities; the transaction is expected to close in mid-2024 subject to shareholder and regulatory approvals.

Amgen Acquires Teneobio for $900M with Up to $1.6B in Milestones

July 27, 2021

Biotechnology

Amgen agreed to acquire clinical-stage biotechnology company Teneobio for $900 million in upfront cash plus potential contingent milestone payments up to $1.6 billion. The acquisition adds Teneobio's heavy-chain antibody discovery platform, bispecific/multispecific antibody technologies and a Phase 1 T-cell engager (TNB-585), strengthening Amgen's antibody research capabilities and oncology pipeline.

Pfizer Acquires Seagen for $43 Billion

December 14, 2023

Biotechnology

Pfizer completed the acquisition of Seagen, acquiring all outstanding Seagen common stock for $229 per share in cash in a transaction valued at approximately $43 billion. The deal adds Seagen's ADC technology, four in-line oncology medicines and a large early-stage pipeline to Pfizer's oncology portfolio, expanding Pfizer's capabilities and doubling its oncology pipeline.

Genmab A/S Acquires Merus N.V. via Tender Offer

December 12, 2025

Biotechnology

Genmab A/S, through its wholly owned purchaser Genmab Holding II B.V., completed a tender offer to acquire outstanding common shares of Merus N.V. for $97.00 per share and commenced a subsequent offering period. The acquisition adds Merus' lead late‑stage oncology asset petosemtamab to Genmab's portfolio, expanding its antibody therapeutics pipeline and expected to be accretive to EBITDA by 2029.

Biogen Acquires Human Immunology Biosciences for up to $1.8B

May 22, 2024

Biotechnology

Biogen Inc. has agreed to acquire Human Immunology Biosciences (HI-Bio) for $1.15 billion upfront and up to $650 million in milestone payments, in a deal valued at up to $1.8 billion. The acquisition adds HI-Bio's lead asset felzartamab, an investigational anti-CD38 antibody with Phase 2 data in multiple renal immune-mediated diseases, to Biogen's immunology and rare-disease development capabilities.

BioNTech Acquires Biotheus

February 3, 2025

Biotechnology

BioNTech SE has completed the acquisition of clinical-stage biotechnology company Biotheus for $800 million in cash and ADS consideration plus up to $150 million in milestone payments. The deal gives BioNTech full global rights to BNT327 and Biotheus' antibody platform, and adds a local R&D hub and biologics manufacturing facility in China to BioNTech's network to support its oncology strategy.