October 8, 2003 SIGA Technologies, Inc. 420 Lexington Avenue, Suite 601 New York, New York 10170 Attention: Thomas N. Konatich Dear Mr. Konatich: Reference is made to the Securities Purchase Agreement (the "Purchase Agreement"), dated August 13, 2003,...Securities Purchase Agreement • October 9th, 2003 • Siga Technologies Inc • Pharmaceutical preparations • New York
