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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1010086	Siga Technologies Inc	SIGA	Pharmaceutical Preparations (2834)	133864870

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1315696	James Antal	C/O Siga Technologies, Inc. 35 East 62Nd Street New York NY 10065		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock, Par Value $.0001 Per Share	Acquisiton	2011-05-19	25,000	$1.47	36,154	No	4	M	Direct
Common Stock, Par Value $.0001 Per Share	Disposition	2011-05-19	25,000	$13.64	11,154	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock, Par Value $.0001 Per Share	Stock Option (Right to buy)	Disposition	2011-05-19	25,000	$0.00	25,000	$1.47

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2004-12-14	2014-12-14	No	4	M	Direct

Footnotes

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.60 to $13.66, inclusive. The reporting person undertakes to provide to SIGA Technologies, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.