
OMER
Omeros Corporation discovers and develops protein and small-molecule drugs targeting complement-mediated diseases, cancers, and neurological disorders, with a focus on inhibiting specific complement pathway enzymes (MASP-2 and MASP-3). The company is at a commercial stage with YARTEMLA (narsoplimab-wuug), its first FDA-approved product for hematopoietic stem cell transplant-associated thrombotic microangiopathy, which began sales in January 2026. Omeros has also submitted a marketing application for YARTEMLA in Europe and is developing additional complement-targeted candidates.