NEW YORK, Aug. 5, 2008 (PRIME NEWSWIRE) -- SIGA Technologies, Inc. (Nasdaq:SIGA), a company specializing in the development of pharmaceutical agents to fight bio-warfare pathogens, plans to announce its second quarter 2008 results in a press release that will be issued on Tuesday, August 12, 2008 before the market open. The Company has scheduled a conference call and simultaneous webcast to discuss the results at 10:00 am ET on Tuesday, August 12, 2008.