Gilead Sciences has acquired Ouro Medicines for $1.7 billion to gain access to its T cell engager programs for autoimmune diseases.

AcquirerGilead Sciences (US, Foster City)
TargetOuro Medicines (US)
Deal value$1.7 billion
Type of dealAcquisition
Date closedMarch 23, 2026
Financial advisor to acquirerMorgan Stanley
Legal advisor to acquirerPaul Weiss Rifkind Wharton & Garrison, Linklaters

Gilead's acquisition of Ouro Medicines will provide it with access to gamgertamig, a clinical-stage T cell engager designed for autoimmune diseases such as severe antibody-mediated orphan conditions. The deal includes an upfront payment of $1.675 billion and up to $500 million in contingent milestone payments.

Deal Mechanics

The transaction also features licensing rights agreements that grant Galapagos certain intellectual property rights related to Ouro's research programs, including gamgertamig for development purposes and a BCMAxCD19xCD3 T cell engager program. The company will gain an operating business with facilities and personnel.

Strategic Rationale

The acquisition enables Gilead to expand its presence in the treatment of autoimmune diseases, leveraging Ouro Medicines' innovative therapies for improved patient care. By integrating these programs, Gilead aims to accelerate development and commercialization efforts while enhancing its portfolio's overall therapeutic breadth.

Financial Context

Ouro Medicines had ongoing Phase 1/2 clinical studies demonstrating gamgertamig’s efficacy in treating autoimmune hemolytic anemia (AIHA) and immune thrombocytopenia (ITP). The drug has received Fast Track and Orphan Drug Designation by the U.S. FDA.

Advisors

Morgan Stanley served as financial advisor to Gilead, while Paul Weiss Rifkind Wharton & Garrison and Linklaters provided legal counsel.

Outlook

Gilead Sciences aims to leverage Ouro Medicines' expertise in developing T cell engager therapies for autoimmune diseases. With the acquired programs now integrated into its portfolio, Gilead expects to advance clinical trials and potentially bring gamgertamig to market as early as 2027.