Xenon Pharmaceuticals, Inc. is a clinical stage biopharmaceutical company. It develops therapeutics to improve the lives of patients with neurological disorders, including rare central nervous system (CNS) conditions. The company's products include XEN496, XEN1101, XEN901 and XEN007. Xenon Pharmaceuticals was founded by Simon Neil Pimstone, Johannes J. P. Kastelein and Michael R. Hayden on November 5, 1996 and is headquartered in Burnaby, Canada.