NEW YORK, June 26, 2009 (GLOBE NEWSWIRE) -- SIGA Technologies, Inc. (Nasdaq:SIGA), a company specializing in the development of pharmaceutical agents to fight biowarfare pathogens, announced today that it will be added to the Russell 3000(r) and the Russell Global(r) Indices, following Russell Investment Group's annual reconstitution of its family of indices on June 26, 2009, after the U.S. markets close. The Russell 3000 Index measures the performance of the largest 3000 U.S. companies representing approximately 98% of the investable U.S. equity market and serves as the U.S. component to the Russell Global Index.