Merck Acquires Terns Pharmaceuticals

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.

Merck to Acquire Harpoon Therapeutics for $680M

January 8, 2024

Biotechnology

Merck has agreed to acquire clinical-stage immunotherapy company Harpoon Therapeutics for $23.00 per share in cash, representing an approximate total equity value of $680 million. The acquisition gives Merck access to Harpoon's TriTAC / ProTriTAC platforms and lead candidate HPN328 (a DLL3-targeting T‑cell engager) to enhance its oncology pipeline; the deal is expected to close in the first half of 2024, subject to customary conditions.

Merck to Acquire Acceleron Pharma Inc for $11.5B

September 30, 2021

Biotechnology

Merck (through a subsidiary) entered into a definitive agreement to acquire Acceleron Pharma Inc for $180 per share in cash, for an approximate total equity value of $11.5 billion. The transaction will be completed via a tender offer followed by a merger, and is expected to close in the fourth quarter of 2021, subject to conditions including regulatory approvals and tender of at least a majority of outstanding shares.

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.

Merck & Co., Inc. Acquires VelosBio Inc.

November 5, 2020

Biotechnology

Merck & Co., Inc. will acquire all outstanding shares of clinical-stage biopharmaceutical company VelosBio for $2.75 billion in cash. The acquisition adds VelosBio's lead investigational antibody-drug conjugate VLS-101 and ROR1-directed pipeline assets to Merck's oncology portfolio and is expected to close by the end of 2020, subject to customary conditions.

BioNTech Acquires Neon Therapeutics

January 16, 2020

Biotechnology

BioNTech SE will acquire Neon Therapeutics, Inc. in an all-stock transaction valued at approximately $67.0 million. Neon, a Cambridge-based developer of neoantigen-targeted T cell therapies, will become a wholly owned subsidiary of BioNTech to expand BioNTech’s T cell therapy capabilities and U.S. presence.