September 23, 2025- Pfizer Inc. and Metsera, Inc. announced the companies have entered into a definitive agreement under which Pfizer will acquire Metsera, a clinical-stage biopharmaceutical company accelerating the next generation of medicines for obesity and cardiometabolic diseases. The acquisition brings deep expertise and a portfolio of differentiated oral and injectable incretin, non-incretin and combination therapy candidates with potential best-in-class efficacy and safety profiles. The Boards of Directors of both Metsera and Pfizer have unanimously approved the transaction.