NEW YORK--(BUSINESS WIRE)--SIGA Technologies, Inc. (NASDAQ: SIGA), a company specializing in the development of pharmaceutical agents to fight biowarfare pathogens and other antiviral targets, today announced that the company has been selected to join the Russell Microcap™ Index. Russell recently posted a list on its website, www.russell.com, of companies being added to its Microcap index as of June 22, 2007.
