SEC FORM 4 SEC Form 4
FORM 4 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
or Section 30(h) of the Investment Company Act of 1940
 
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
MacAndrews & Forbes Holdings Inc.

(Last) (First) (Middle)
35 EAST 62ND STREET

(Street)
NEW YORK NY 10065

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
SIGA TECHNOLOGIES INC [ SIGA ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
09/30/2009
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
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 09/30/2009 X 1,824,412 A $1.9 4,296,634 I Owned through partially-owned corporation(1)
Common Stock, par value $.0001 per share 09/30/2009 F 444,665 D $7.8 3,851,969 I Owned through partially-owned corporation(1)
Common Stock, par value $.0001 per share 09/30/2009 P 3,851,969(2) A $6.24 3,851,969 I Owned through partially-owned limited partnership
Common Stock, par value $.0001 per share 5,962,032 I Owned through wholly-owned corporation
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 Securities Underlying Derivative Security (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: 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
Warrant (Right to Buy) $1.9 09/30/2009 X 1,824,412 01/08/2004 01/08/2011 Common Stock 1,824,412 $0.00 0 I Owned through partially-owned corporation(1)
1. Name and Address of Reporting Person*
MacAndrews & Forbes Holdings Inc.

(Last) (First) (Middle)
35 EAST 62ND STREET

(Street)
NEW YORK NY 10065

(City) (State) (Zip)
1. Name and Address of Reporting Person*
PERELMAN RONALD O

(Last) (First) (Middle)
35 EAST 62ND STREET

(Street)
NEW YORK NY 10065

(City) (State) (Zip)
1. Name and Address of Reporting Person*
MacAndrews & Forbes LLC

(Last) (First) (Middle)
35 EAST 62ND STREET

(Street)
NEW YORK NY 10065

(City) (State) (Zip)
1. Name and Address of Reporting Person*
STH Partners, L.P.

(Last) (First) (Middle)
C/O MATTHEW H. KAMENS, COZEN O'CONNOR
1900 MARKET STREET

(Street)
PHILADELPHIA PA 19103

(City) (State) (Zip)
Explanation of Responses:
1. 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.
2. On September 30, 2009, STH acquired 3,851,969 shares of Common Stock in a privately negotiated purchase from TTP.
Remarks:
Ronald O. Perelman beneficially owns 100% of the common stock of MacAndrews & Forbes Holdings Inc., which beneficially owns 100% of the equity interests of MacAndrews & Forbes LLC, a joint filer hereunder. MacAndrews & Forbes LLC has a direct ownership interest in STH. MacAndrews & Forbes LLC beneficially owns the securities described above as owned through wholly-owned corporation and STH beneficially owns the securities described above as owned through partially-owned limited partnership. STH has agreed that any voting stock of SIGA Technologies, Inc. ("SIGA") held by STH will be voted in the same proportion as the votes cast by the other holders of voting stock of SIGA on any matter to be voted on by holders of such voting stock.
/s/ Barry F. Schwartz, Executive Vice Chairman 10/02/2009
/s/ Barry F. Schwartz for Ronald O. Perelman pursuant to a Power of Attorney filed with the Securities and Exchange Commission 10/02/2009
/s/ Barry F. Schwartz, Executive Vice Chairman 10/02/2009
/s/ Paul G. Savas, Executive Vice President 10/02/2009
** Signature of Reporting Person Date
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).
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