Merck to Acquire Imago BioSciences, Inc.

Merck Acquires Prometheus Biosciences for $10.8 Billion

June 16, 2023

Biotechnology

Merck has agreed to acquire clinical-stage biotechnology company Prometheus Biosciences for $200.00 per share in cash, representing an approximate total equity value of $10.8 billion. The acquisition strengthens Merck's immunology pipeline by adding Prometheus' precision-medicine platform and lead candidate PRA023 (MK-7240) for inflammatory bowel disease and other immune-mediated conditions.

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.

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.

Merck to Acquire EyeBio for up to $3 Billion

May 29, 2024

Biotechnology

Merck (through a subsidiary) will acquire Eyebiotech Limited (EyeBio) for up to $3.0 billion — $1.3 billion upfront in cash plus up to $1.7 billion in development, regulatory and commercial milestones. The acquisition—expected to close in Q3 2024 and to be accounted for as an asset acquisition—adds EyeBio's ophthalmology-focused pipeline, including lead candidate Restoret (EYE103), to Merck's growing ophthalmology presence.

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.

Gilead Sciences Acquires Immunomedics

September 13, 2020

Biotechnology

Gilead Sciences agreed to acquire Immunomedics for $88.00 per share in an all-cash transaction valuing Immunomedics at approximately $21 billion. The acquisition gives Gilead global rights (outside certain Asian territories) to Trodelvy, an FDA‑approved antibody‑drug conjugate for metastatic triple‑negative breast cancer, and accelerates Gilead’s expansion into oncology.