SIGA TECHNOLOGIES INC — Director's Dealing 2014

Jan 7, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SIGA TECHNOLOGIES INC (SIGA)
CIK: 0001010086
Period of Report: 2014-01-03

Reporting Person: Haynes William J II (Executive VP & General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-01-03	Common Stock, par value $.0001 per share	M	25000	—	Acquired	25000	Direct
2014-01-03	Common Stock, par value $.0001 per share	F	11063	$3.35	Disposed	13937	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-01-03	Restricted Stock Units	$	M	25000	Disposed		Common Stock, par value $.0001 per share (25000)	Direct
2014-01-03	Restricted Stock Units	$	A	75000	Acquired		Common Stock, par value $.0001 per share (75000)	Direct

Footnotes

F1: 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 11,063 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 January 7, 2013.

F2: Represents vesting of one-third of RSUs granted on January 3, 2013. The second 1/3 of such RSUs vest on January 3, 2015 and the remaining 1/3 of such RSUs vest on January 3, 2016. Each RSU converts into one share of Common Stock of the Issuer on a one for one basis.

F3: The RSUs vest in equal yearly installments over a period of three (3) years, with the first 1/3 of such RSUs vesting on January 3, 2015, the second 1/3 of such RSUs vesting on January 3, 2016 and the remaining 1/3 of such RSUs vesting on January 3, 2017. Each RSU converts into one share of Common Stock of the Issuer on a one for one basis.