SIGA Technologies, Inc., a pharmaceutical company, engages in the development and commercialization of pharmaceutical solutions for smallpox, Ebola, dengue, Lassa fever, and other dangerous viruses. Its lead product is ST-246, an orally administered antiviral drug that targets orthopoxviruses. The company also has two drug series in the pre-clinical development stage against four serotypes of virus for dengue disease. In addition, it is developing anti-arenavirus drug for hemorrhagic fever arenaviruses and other hemorrhagic fever viruses, including Rift Valley Fever, Lymphocytic choriomeningitis virus, and Ebola; and a broad spectrum antiviral candidate against viruses in the Poxviridae, Filoviridae, Bunyaviridae, Arenaviridae, Flaviviridae, Togaviridae, Retroviridae, and Picornaviridae families. The company was founded in 1995 and is headquartered in New York, New York.