Filed
Pursuant to Rule 424(b)(3)
Registration
No. 333-129756
PROSPECTUS
SUPPLEMENT NO. 2
Dated
May
16, 2007
3,060,000
SHARES
SIGA
Technologies, Inc.
This
Prospectus Supplement amends and supplements the Prospectus dated December
2,
2005, as previously amended and supplemented by that certain Prospectus
Supplement No. 1, dated October 27, 2006 (collectively, the “Prospectus”) of
SIGA Technologies, Inc. (“SIGA”) relating to the offer and sale from time to
time by certain selling stockholders of up to 3,060,000 shares common stock,
par
value $.0001 per share (the “Shares”). This number of Shares
represents the aggregate of 2,000,000 shares issued and 1,000,000 shares
underlying warrants issued pursuant to a securities purchase agreement dated
November 2, 2005, between SIGA and certain investors thereto, as well as 60,000
shares underlying warrants issued pursuant to an Exclusive Finder's Agreement
dated November 1, 2005, between SIGA and The Shemano Group, Inc.
This
Prospectus Supplement should be read in conjunction with, and may not be
delivered or utilized without, the Prospectus. This Prospectus Supplement is
qualified by reference to the Prospectus, except to the extent that the
information in this Prospectus Supplement supersedes the information contained
in the Prospectus.
Investing
in our Shares involves a high degree of risk. See “Risk Factors” beginning on
page 8 of the Prospectus.
NEITHER
THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION
HAS
APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS PROSPECTUS
IS
TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
One
of
the selling stockholders, Omicron Master Trust (“Omicron”), transferred a
warrant to purchase certain Shares to Portside Growth and Opportunity Fund
(“Portside”) in April 2007. The purpose of this Prospectus Supplement
is to amend the Selling Stockholders table in order to reflect the transfer
of
such underlying Shares from Omicron to Portside. Accordingly, this
Supplement No. 2 amends the Selling Stockholders table beginning on page 18
in
the Prospectus by deleting the Omicron line and related footnote and adding
to
the Selling Stockholders table the line below with respect to
Portside. All other information in the Prospectus shall remain
unchanged.
|
Shares
Beneficially Owned
Prior
to Offering
|
Shares
Being
Offered
|
Shares
Beneficially
Owned
After Offering
|
||||||||||||||||||
|
Number
|
Percent
|
Number
|
Percent
|
|||||||||||||||||
|
Name
of Beneficial Owner
|
||||||||||||||||||||
|
Portside
Growth and Opportunity Fund (1)
|
145,808
|
0.4 | % |
145,808
|
--
|
0.0 | % | |||||||||||||
__________
|
(1)
|
Ramius
Capital Group, L.L.C. (“Ramius Capital”) is the investment adviser of
Portside Growth and Opportunity Fund (“Portside”) and consequently has
voting control and investment discretion over securities held by
Portside. Ramius Capital disclaims beneficial ownership of the
shares held by Portside. Peter A. Cohen, Morgan B. Stark,
Thomas W. Strauss and Jeffrey M. Solomon are the sole managing members
of
C4S & Co., L.L.C., the sole managing member of Ramius
Capital. As a result, Messrs. Cohen, Stark, Strauss and Solomon
may be considered beneficial owners of any shares deemed to be
beneficially owned by Ramius Capital. Messrs. Cohen, Stark,
Strauss and Solomon disclaim beneficial ownership of these
shares.
|
The
investment advisor to Portside is Ramius Capital. An affiliate of
Ramius Capital is an NASD member. However, this affiliate will not
sell any shares to be offered by Portside through this prospectus and will
receive no compensation whatsoever in connection with sales of shares by
Portside through this prospectus.