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

SERB Pharmaceuticals Acquires Y-mAbs Therapeutics

September 16, 2025

Biotechnology

SERB Pharmaceuticals completed its acquisition of Y-mAbs Therapeutics following a tender offer and statutory merger, making Y-mAbs a wholly owned subsidiary and delisting it from Nasdaq. The deal adds Y-mAbs' antibody-based oncology assets — including Danyelza (naxitamab-gqgk) — to SERB's rare disease and rare oncology portfolio to expand its commercial capabilities in pediatric and rare cancers.

Merck Acquires Pandion Therapeutics

February 25, 2021

Biotechnology

Merck will acquire Pandion Therapeutics for $60 per share in cash, representing an approximate total equity value of $1.85 billion, via a tender offer and subsequent merger. Pandion is a clinical-stage biotechnology company focused on precision immune modulators (TALON platform) with lead candidate PT101 targeting regulatory T cells for autoimmune diseases; the transaction is expected to close in the first half of 2021 subject to customary conditions.

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.

AbCellera Acquires TetraGenetics

September 13, 2021

Biotechnology

AbCellera Biologics Inc. acquired TetraGenetics, Inc. in an all-cash transaction to integrate TetraGenetics' recombinant transmembrane protein expression platform into AbCellera's antibody discovery technology stack. The acquisition expands AbCellera's ability to generate antibodies against difficult-to-drug ion channels, GPCRs and other transmembrane targets, and includes upfront and milestone-based payments.

Genmab Acquires ProfoundBio for $1.8 Billion

April 3, 2024

Biotechnology

Genmab A/S will acquire clinical-stage biotech ProfoundBio, Inc. in an all-cash transaction valued at USD 1.8 billion to obtain worldwide rights to ProfoundBio's pipeline of antibody-drug conjugates (ADCs), including rinatabart sesutecan (Rina-S). The deal is intended to broaden and strengthen Genmab's oncology and ADC capabilities and is expected to close in the first half of 2024, subject to customary conditions.

Novartis Acquires Regulus Therapeutics

June 25, 2025

Biotechnology

Novartis has completed the acquisition of Regulus Therapeutics, making Regulus an indirect wholly owned subsidiary following a tender offer and merger. The deal secures Regulus' investigational oligonucleotide therapy farabursen for ADPKD and strengthens Novartis' renal disease pipeline.