KalVista Pharmaceuticals Inc is a pharmaceutical company, which focuses on the discovery, development, and commercialization of small molecule protease inhibitors for a range of diseases. The company's product portfolio comprises small molecule plasma kallikrein inhibitors targeting hereditary angioedema and diabetic macular edema; and oral plasma kallikrein inhibitors. Geographically it operates throughout the region of the United States. The company is also conducting preclinical development on a novel, oral, Factor XIIa inhibitor program.