EXHIBIT 1
AGREEMENT OF
JOINT FILING OF SCHEDULE 13D
The undersigned hereby agree to jointly prepare and file with regulatory
authorities the Schedule 13D, dated August 25, 2003, ("Schedule 13D"), and any
subsequent amendments thereto reporting each of the undersigned's ownership of
securities of SIGA Technologies, Inc. and hereby affirm that such Schedule 13D
is being filed on behalf of each of the undersigned.
Dated: August 25, 2003 MAFCO HOLDINGS INC.
By: /s/ Xxxxx X. Xxxxxxxx
------------------------
Name: Xxxxx X. Xxxxxxxx
Title: Executive Vice President
and General Counsel
Dated: August 25, 2003 MACANDREWS & FORBES
HOLDINGS INC.
By: /s/ Xxxxx X. Xxxxxxxx
------------------------
Name: Xxxxx X. Xxxxxxxx
Title: Executive Vice President
and General Counsel
