<DOCUMENT>
<TYPE>EX-32.2
<SEQUENCE>6
<FILENAME>d67544_ex32-2.txt
<DESCRIPTION>CERTIFICATION
<TEXT>

                                                                    Exhibit 32.2

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of SIGA Technologies,  Inc. (the "Company")
on Form 10-K for the year ending  December 31, 2005 as filed with the Securities
and  Exchange  Commission  on the date  hereof  (the  "Report"),  I,  Thomas  N.
Konatich.,  Chief  Financial  Officer of the  Company,  certify,  pursuant to 18
U.S.C. ss.1350, as adopted pursuant to ss.906 of the Sarbanes-Oxley Act of 2002,
that, to the best of my knowledge:

      (1)   The Report fully complies with the  requirements of section 13(a) or
            15(d) of the Securities Exchange Act of 1934; and

      (2)   The  information  contained in the Report  fairly  presents,  in all
            material respects, the financial condition and results of operations
            of the Company.

March 28, 2006

                                                /S/ Thomas N. Konatich
                                                --------------------------
                                                Thomas N. Konatich
                                                Chief Financial Officer
</TEXT>
</DOCUMENT>
