UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 SCHEDULE 13D/A
                                (Amendment No. 2)

                    Under the Securities Exchange Act of 1934

                             SIGA TECHNOLOGIES, INC.
                                (Name of Issuer)

                                  COMMON STOCK
                         (TITLE OF CLASS OF SECURITIES)

                                  826 917 10 6
                                 (CUSIP Number)

                              Adam Eilenberg, Esq.
                        Ehrenreich Eilenberg & Krause LLP
                         11 East 44th Street, 11th Floor
                               New York, NY 10017
                                 (212) 986-9700
           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

                                January 25, 2002
             (Date of event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box: [ ]

NOTE: Six copies of this statement, including all exhibits, should be filed with
the  Commission.  See Rule  13d-1(a) for other  parties to whom copies are to be
sent.

* THE REMAINDER OF THIS COVER PAGE SHALL BE FILLED OUT FOR A REPORTING  PERSON'S
INITIAL FILING ON THIS FORM WITH RESPECT TO THE SUBJECT CLASS OF SECURITIES, AND
FOR  ANY  SUBSEQUENT   AMENDMENT   CONTAINING   INFORMATION  WHICH  WOULD  ALTER
DISCLOSURES PROVIDED IN A PRIOR COVER PAGE.

THE INFORMATION REQUIRED ON THE REMAINDER OF THIS COVER PAGE SHALL NOT BE DEEMED
TO BE "FILED" FOR THE PURPOSE OF SECTION 18 OF THE  SECURITIES  EXCHANGE  ACT OF
1934 ("ACT") OR OTHERWISE  SUBJECT TO THE LIABILITIES OF THAT SECTION OF THE ACT
BUT  SHALL BE  SUBJECT  TO ALL OTHER  PROVISIONS  OF THE ACT  (HOWEVER,  SEE THE
NOTES).


CUSIP No. 826 917 10 6 13D ________________________________________________________________________________ 1 Name of Reporting Person S.S. or I.R.S. Identification No. of Above Persons Richard Stone ________________________________________________________________________________ 2 Check Appropriate Box If a Member of a Group (a) [_] (b) [_] ________________________________________________________________________________ 3 SEC Use Only ________________________________________________________________________________ 4 Source of Funds 00,PF ________________________________________________________________________________ 5 Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [_] ________________________________________________________________________________ 6 Citizenship or Place of Organization USA ________________________________________________________________________________ Number of 7 Sole Voting Power 505,484 including Shares 25,000 shares issuable upon Beneficially exercise of warrants Owned by ______________________________________________________________ Each 8 Shared Voting Power Reporting 0 Person ______________________________________________________________ With 9 Sole Dispositive Power 505,484, including 25,000 shares issuable upon exercise of warrants ______________________________________________________________ 10 Shared Dispositive Power 0 ________________________________________________________________________________ 11 Aggregate Amount Beneficially Owned by Each Reporting Person 505,484 ________________________________________________________________________________ 12 Check box if the aggregate Amount in Row (11) Excludes Certain Shares [_] ________________________________________________________________________________ 13 Percent of Class Represented by Amount in Row (11) 4.97% ________________________________________________________________________________ 14 Type of Reporting Person IN ________________________________________________________________________________

Item 1. Security and Issuer. The title of the class of equity securities to which this statement relates is the common stock, $.0001 par value per share (the "Common Stock"), of SIGA Technologies, Inc., a Delaware corporation (the "Company"). The principal executive offices of the Company are located at 420 Lexington Avenue, Suite 620, New York, NY 10170. This statement is filed pursuant to Rule 13d-2(a) with respect to securities owned by Richard Stone as of January 25, 2002 and amends the Schedule 13 D filed on June 3, 1998,as amended by Amendment No. 1 filed on January 14, 2000 (collectively, the "Schedule 13D"). Except as set forth herein, the Schedule 13D is hereby restated in its entirety. Item 3. Source and Amount of Funds or Other Consideration. The purpose of this Amendment No. 2 is to report certain subsequent acquisitions and dispositions of shares. Between January 21, 2000 and April 18, 2001, Mr. Stone purchased 83,500 shares of Common Stock in open market transactions at prices between $2.07 per share and $4.25 per share. All purchases were paid out of his personal funds. On May 8, 2001, Mr. Stone purchased 25,000 Units of securities from the Company in a private placement transaction at a price of $2.00 per Unit. Each Unit consisted of one share of Common Stock and one currently exercisable warrant to purchase one additional share of Common Stock at an exercise price of $2.94, expiring in May 2006. Between February 22, 2000 and January 25, 2002, Mr. Stone sold 176,481 shares of Common Stock in open market transactions at prices between $2.20 per share and $7.82 per share. Item 4. Purpose of Transaction. Mr. Stone's purchases were made for investment purposes. The sales of securities were made to diversify Mr. Stone's investment portfolio. Although he has no current intention to do so, depending on market conditions and other factors, Mr. Stone may acquire additional shares or sell all or a portion of his shares of Common Stock. Mr. Stone has no plans or proposals which would relate to or would result in any of the actions set forth in the subparagraphs (a) through (j) of Item 4.

Item 5. Interest in Securities of the Issuer. See Items 7 through 11 on the cover page. Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer. None. Item 7. Materials to be Filed as Exhibits. None. SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, the undersigned certifies that the information set forth in this statement is true, correct and complete. Dated: February 6, 2002 /s/ Richard Stone ---------------------------- Richard Stone