SIGA TECHNOLOGIES INC — Director's Dealing 2009

May 19, 2009

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SIGA TECHNOLOGIES INC (SIGA)
CIK: 0001010086
Period of Report: 2009-05-13

Reporting Person: WEINER MICHAEL MD (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-05-13	Common Stock, par value $.0001 per share	S	7399	$6.12	Disposed	122601	Direct
2009-05-13	Common Stock, par value $.0001 per share	S	3600	$6.09	Disposed	119001	Direct
2009-05-13	Common Stock, par value $.0001 per share	S	3600	$6.02	Disposed	115401	Direct
2009-05-13	Common Stock, par value $.0001 per share	S	2000	$6.09	Disposed	113401	Direct
2009-05-13	Common Stock, par value $.0001 per share	S	1800	$6.05	Disposed	111601	Direct
2009-05-13	Common Stock, par value $.0001 per share	S	1601	$6.26	Disposed	110000	Direct

Footnotes

F1: Includes 122,601 shares of common stock issuable upon the exercise of options.

F2: Includes 119,001 shares of common stock issuable upon the exercise of options.

F3: Includes 115,401 shares of common stock issuable upon the exercise of options.

F4: Includes 113,401 shares of common stock issuable upon the exercise of options.

F5: Includes 111,601 shares of common stock issuable upon the exercise of options.

F6: Includes 110,000 shares of common stock issuable upon the exercise of options.