Metsera, a biotech startup, raised $215 million in Series B financing, led by Wellington Management and Venrock Healthcare Capital Partners, bringing its total funding to over $500 million. The company aims to develop obesity drugs, including a long-acting GLP-1 drug, MET-097i, which showed promising weight loss results in a Phase 1 trial. Metsera also has ongoing trials for an injectable amylin analog and an oral GLP-1 peptide, with potential combinations of therapies. The company has partnered with Amneal Pharmaceuticals for manufacturing.