Gilead Sciences to Acquire Tubulis for Up to USD 5.0 Billion

Gilead Sciences To Acquire Arcellx for $7.8 Billion to Strengthen CAR T-Cell Portfolio

February 21, 2026

Biotechnology

Gilead Sciences entered into a definitive agreement to acquire Arcellx, Inc. for $115 per share in cash plus a contingent value right of $5 per share, implying an equity value of about $7.8 billion. The deal is designed to give Gilead full control of Arcellx’s anito-cel (anito-cabtagene autoleucel) BCMA-directed CAR T therapy, eliminating profit-sharing and related payments while accelerating development and commercialization.

Gilead Sciences Acquires CymaBay Therapeutics for $4.3 Billion

February 12, 2024

Pharmaceuticals

Gilead Sciences, Inc. agreed to acquire CymaBay Therapeutics, Inc. for an equity value of approximately $4.3 billion, or $32.50 per share in cash. The acquisition adds CymaBay’s investigational lead asset seladelpar for the treatment of primary biliary cholangitis (PBC), complementing Gilead’s existing liver portfolio.

Lonza Group AG Acquires Synaffix B.V.

June 1, 2023

Biotechnology

Lonza Group AG has acquired Synaffix B.V., a Netherlands-based biotech company that commercialises a clinical-stage antibody-drug conjugate (ADC) technology platform. The deal brings Synaffix's ADC bioconjugation technology into Lonza's integrated ADC development and manufacturing offering to accelerate discovery, development, scale-up and commercialization of ADCs.

AbbVie to Acquire ImmunoGen for $10.1 Billion

November 30, 2023

Pharmaceuticals

AbbVie entered into a definitive agreement to acquire ImmunoGen, including its flagship ADC therapy ELAHERE (mirvetuximab soravtansine-gynx), in a deal valued at approximately $10.1 billion. The transaction is expected to close in mid-2024, subject to ImmunoGen shareholder approval, regulatory approvals, and other customary closing conditions.

Eli Lilly Acquires Sigilon Therapeutics

June 29, 2023

Biotechnology

Eli Lilly agreed to acquire Sigilon Therapeutics in a cash tender offer valuing the biotech at roughly $34.6 million up front plus contingent value rights that could increase total consideration to about $309.6 million. The acquisition brings Sigilon's encapsulated cell therapy platform (including SIG-002 for type 1 diabetes) into Lilly's diabetes and cell-therapy R&D efforts to accelerate development and potential commercialization.

Gilead Sciences to Acquire Ouro Medicines for $1.675B Upfront to Advance Autoimmune T Cell Therapies

March 27, 2026

Biotechnology

Gilead Sciences entered into a definitive agreement to acquire Ouro Medicines, a clinical-stage biotech focused on T cell engager therapies for autoimmune diseases, in a deal valued at $1.675 billion upfront with up to $500 million in milestone payments. The acquisition adds OM336 (gamgertamig), a BCMAxCD3 bispecific T cell engager currently in Phase 1/2 trials, to strengthen Gilead’s inflammation and immunology portfolio.