Title: Warrant (Right to Buy)
Conversion or Exercise Price of Derivative Security: $3.29
Trans Date: 4/30/2013
# of Derivative Securities: 250,000
Amount of Securities Underlying: 250,000
Price: These warrants to purchase shares of the common stock of SIGA Technologies, Inc. ("SIGA") were acquired by MacAndrews & Forbes LLC in consideration for services to be provided pursuant to a Services Agreement, dated as of April 30, 2013, between SIGA and MacAndrews & Forbes LLC.