SIGA TECHNOLOGIES INC — Director's Dealing 2010

Oct 18, 2010

SEC Form 4/A — Form 4/A

Issuer: SIGA TECHNOLOGIES INC (SIGA)
CIK: 0001010086
Period of Report: 2009-09-30

Reporting Person: MacAndrews & Forbes Holdings Inc. (Director, 10% Owner)
Reporting Person: PERELMAN RONALD O (10% Owner)
Reporting Person: MacAndrews & Forbes LLC (10% Owner)
Reporting Person: STH Partners, L.P. (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-09-30	Common Stock, par value $.0001 per share	X	1845396	$1.8784	Acquired	4317618	Indirect
2009-09-30	Common Stock, par value $.0001 per share	F	444666	$7.80	Disposed	3872952	Indirect
2009-09-30	Common Stock, par value $.0001 per share	P	3851969	$6.24	Acquired	3851969	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2009-09-30	Warrant (Right to Buy)	$1.8784	X	1845396	Disposed	2011-01-08	Common Stock (1845396)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, par value $.0001 per share	5962032	Indirect

Footnotes

F1: Represents securities held by TransTech Pharma, Inc. ("TTP"), a corporation in which Ronald O. Perelman, a joint filer hereunder, has a direct ownership interest. Mr. Perelman disclaims beneficial ownership of the securities reported on the Form 4 as owned by TTP, except to the extent of his pecuniary interest therein. None of MacAndrews & Forbes Holdings Inc., MacAndrews & Forbes LLC or STH Partners, L.P., a limited partnership in which MacAndrews & Forbes LLC has a direct ownership interest and a joint filer hereunder ("STH"), has any pecuniary interest in securities held by TTP.

F2: On September 30, 2009, STH acquired 3,851,969 shares of Common Stock in a privately negotiated purchase from TTP.