NEW YORK--(BUSINESS WIRE)--SIGA Technologies, Inc. (NASDAQ: SIGA), a company specializing in the development of pharmaceutical agents to fight bio-warfare pathogens, today announced the appointment of Seane Jones as the new Vice President of Clinical and Regulatory Affairs, effective April 29, 2008. Ms. Jones will direct the execution of the company's ongoing regulatory strategy and will have responsibility for all regulatory submissions with respect to SIGA’s product candidates.