Sec Form 4 Filing - Gomez Phillip Louis III @ SIGA TECHNOLOGIES INC - 2019-11-22

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 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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1. Name and Address of Reporting Person Gomez Phillip Louis III 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.,, 31 EAST 62ND STREET 3. Date of Earliest Transaction (MM/DD/YY) 11/22/2019 (Street) NEW YORK, NY10065 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 11/22/2019 M 294,117 A $ 0 609,810 D Common Stock, par value $.0001 per share 11/22/2019 F 144,028 ( 1 ) D $ 4.92 465,782 D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 ( 1 ) 11/22/2019 M 294,117 ( 2 ) ( 2 ) Common Stock, par value $.0001 per share 294,117 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Gomez Phillip Louis III C/O SIGA TECHNOLOGIES, INC., 31 EAST 62ND STREET NEW YORK, NY10065 X Chief Executive Officer Signatures /s/ Phillip L. Gomez 11/26/2019 Signature of Reporting Person Date

Explanation of Responses:

( 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 144,028 shares of Common Stock -- granted in the form of RSUs on November 22, 2016 -- in order to satisfy those withholding tax obligations. ( 2 )Represents vesting of certain RSUs granted on November 22, 2016 and the consequent issuance of common stock of the Issuer to the Reporting Person. The RSUs vest over three years, one-third on each of the first three anniversaries of the date of grant. The shares of common stock reported in this Form 4 were issued in respect of RSUs that vested on November 22, 2019. Each RSU converts into one share of Common Stock of the Issuer on a one for one basis.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* 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).

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