Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
ROSE ERIC A MD
  2. Issuer Name and Ticker or Trading Symbol
SIGA TECHNOLOGIES INC [SIGA]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Executive Officer
(Last)
(First)
(Middle)
C/O SIGA TECHNOLOGIES, INC., 660 MADISON AVENUE, SUITE 1700
3. Date of Earliest Transaction (Month/Day/Year)
01/03/2014
(Street)

NEW YORK, NY 10065
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock, par value $.0001 per share 01/03/2014   M   66,666 A $ 0 462,753 D  
Common Stock, par value $.0001 per share 01/03/2014   F   29,033 (1) D $ 3.35 433,720 D  
Common Stock, par value $.0001 per share 01/03/2014   P   0 A $ 0 13,300 I By Spouse

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Restricted Stock Units (2) 01/03/2014   M     66,666   (2)   (2) Common Stock, par value $.0001 per share 66,666 $ 0 133,334 D  
Restricted Stock Units (3) 01/03/2014   A   200,000     (3)   (3) Common Stock, par value $.0001 per share 200,000 $ 0 200,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ROSE ERIC A MD
C/O SIGA TECHNOLOGIES, INC.
660 MADISON AVENUE, SUITE 1700
NEW YORK, NY 10065
  X     Chief Executive Officer  

Signatures

 /s/ Eric A. Rose   01/07/2014
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(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 29,033 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.
(2) 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.
(3) 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

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