Regarding the 9k sold is this footnote on the form 4:
1. SIGA Technologies, Inc. (the "Issuer") has certain tax withholding obligations associated with the vesting of restricted stock units ("RSUs") and the consequent issuance of Common Stock of the Issuer. This Form 4 reports the surrender to the Issuer by the Reporting Person of 9,253 shares of Common Stock -- granted in the form of RSUs approximately one year ago -- in order to satisfy those withholding tax obligations. The Reporting Person reported the initial grant on March 1, 2012.