NEW YORK, Aug 3, 2009 (GlobeNewswire via COMTEX News Network) -- SIGA Technologies, Inc. (Nasdaq:SIGA), a company specializing in the development of pharmaceutical agents to fight bio-warfare pathogens, has rescheduled its quarterly update call to 10:30 am EDT on Thursday, August 6, 2009 from 9:30 am EDT on that same day. Dial-in access to the call remains the same.

Participants should call 888-297-0360 (United States/Canada) or 719-325-2138 (International) and request the SIGA Technologies call or utilize the confirmation code 9184525. A live broadcast of the earnings conference call will also be available via the Internet at www.SIGA.com.

About SIGA Technologies, Inc.

SIGA Technologies is applying viral and bacterial genomics and sophisticated computational modeling in the design and development of novel products for the prevention and treatment of serious infectious diseases, with an emphasis on products for biological warfare defense. SIGA believes that it is a leader in the development of pharmaceutical agents to fight potential bio-warfare pathogens. SIGA has antiviral programs targeting smallpox and other Category A pathogens, including arenaviruses (Lassa fever, Junin, Machupo, Guanarito, Sabia, and lymphocytic choriomeningitis), dengue virus, and the filoviruses (Ebola and Marburg). For more information about SIGA, please visit SIGA's Web site at http://www.siga.com/.

The SIGA Technologies, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=4504

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SOURCE: SIGA Technologies, Inc.

KCSA 
Strategic Communications
Todd Fromer
212-896-1215
Tfromer@kcsa.com
Marybeth Csaby
212-896-1236
mcsaby@kcsa.com

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