Johnson & Johnson Acquires Yellow Jersey Therapeutics from Numab for $1.25B

Johnson & Johnson Acquires Proteologix Inc.

May 16, 2024

Biotechnology

Johnson & Johnson has entered into a definitive agreement to acquire privately-held Proteologix, Inc. for $850 million in cash plus potential milestone payments. Proteologix is a San Carlos, California–based biotechnology company developing bispecific antibodies (including PX128 and PX130) for atopic dermatitis and asthma; the deal is expected to close mid-2024 subject to customary conditions.

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.

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.

Otsuka Pharmaceutical Acquires Jnana Therapeutics

August 1, 2024

Biotechnology

Otsuka Pharmaceutical Co., Ltd. will acquire clinical-stage biotech Jnana Therapeutics, making it a wholly owned subsidiary via Otsuka America, Inc. The deal values Jnana at $800 million in upfront cash plus up to $325 million in development and regulatory milestones and is intended to add Jnana's RAPID chemoproteomics platform and lead program JNT-517 (a potential oral PKU therapy) to Otsuka's specialty and autoimmune pipeline.

Johnson & Johnson Acquires Intra-Cellular Therapies

April 2, 2025

Pharmaceuticals

Johnson & Johnson has completed its acquisition of Intra-Cellular Therapies, adding the approved drug CAPLYTA (lumateperone) and a clinical-stage neuroscience pipeline to J&J's Innovative Medicine business. The deal is expected to accelerate J&J's 2025 sales growth and strengthen its leadership in neuroscience and mental health therapeutics.

Johnson & Johnson Acquires Halda Therapeutics for $3.05 Billion

December 29, 2025

Biotechnology

Johnson & Johnson completed the acquisition of Halda Therapeutics OpCo, Inc. for $3.05 billion in cash, adding Halda's RIPTAC platform and clinical-stage prostate cancer candidate HLD-0915 to its oncology portfolio. The deal brings several earlier-stage RIPTAC-based programs for other solid tumors and positions J&J to advance oral targeted therapies that may overcome treatment resistance.