SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G/A UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 1) Fortissimo Acquisition Corp. ------------------------------------------------------ (Name of Issuer) Common Stock, par value $0.0001 per share ------------------------------------------------------ (Title of Class of Securities) 34958F107 ------------------------------------------------------ (CUSIP NUMBER) November 26, 2007 ------------------------------------------------------ (Date of event which requires filing of this statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [X] Rule 13d-1(c) [ ] Rule 13d-1(d) 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 the disclosures provided in a prior cover page. The information required in 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). Page 1 of 9 Pages CUSIP No. 34958F107 13G/A Page 2 of 9 Pages ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS D.B. Zwirn & Co., L.P. 02-0597442 ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] ----------------------------------------------------------------------- (3) SEC USE ONLY ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 718,000 Shares OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 718,000 Shares ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 718,000 Shares ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 12.24% ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** PN ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 34958F107 13G/A Page 3 of 9 Pages ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS D.B. Zwirn Special Opportunities Fund, Ltd. ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] ----------------------------------------------------------------------- (3) SEC USE ONLY ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands, British West Indies ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 427,540 Shares OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 427,540 Shares ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 427,540 Shares ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 7.29% ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** CO ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 34958F107 13G/A Page 4 of 9 Pages ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS D.B. Zwirn Special Opportunities Fund, L.P. 73-1637217 ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] ----------------------------------------------------------------------- (3) SEC USE ONLY ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 290,460 Shares OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 290,460 Shares ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 290,460 Shares ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.95% ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** PN ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 34958F107 13G/A Page 5 of 9 Pages ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS DBZ GP, LLC 42-1657316 ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] ----------------------------------------------------------------------- (3) SEC USE ONLY ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 718,000 Shares OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 718,000 Shares ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 718,000 Shares ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 12.24% ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** OO ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 34958F107 13G/A Page 6 of 9 Pages ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS Zwirn Holdings, LLC 30-0080444 ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] ----------------------------------------------------------------------- (3) SEC USE ONLY ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 718,000 Shares OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 718,000 Shares ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 718,000 Shares ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 12.24% ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** OO ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 34958F107 13G/A Page 7 of 9 Pages ----------------------------------------------------------------------- (1) NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS Daniel B. Zwirn ----------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [X] (b) [ ] ----------------------------------------------------------------------- (3) SEC USE ONLY ----------------------------------------------------------------------- (4) CITIZENSHIP OR PLACE OF ORGANIZATION United States ----------------------------------------------------------------------- NUMBER OF (5) SOLE VOTING POWER 0 SHARES -------------------------------------------------------- BENEFICIALLY (6) SHARED VOTING POWER 718,000 Shares OWNED BY -------------------------------------------------------- EACH (7) SOLE DISPOSITIVE POWER 0 REPORTING -------------------------------------------------------- PERSON WITH (8) SHARED DISPOSITIVE POWER 718,000 Shares ----------------------------------------------------------------------- (9) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 718,000 Shares ----------------------------------------------------------------------- (10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ** [ ] ----------------------------------------------------------------------- (11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 12.24% ----------------------------------------------------------------------- (12) TYPE OF REPORTING PERSON ** IN ----------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 34958F107 13G/A Page 8 of 9 Pages This Amendment No. 1 (this "Amendment") amends the statement on Schedule 13G filed on May 7, 2007 (as amended, the "Schedule 13G") with respect to shares of Common Stock, par value $0.0001 per share (the "Shares") of Fortissimo Acquisition Corp., a Delaware corporation (the "Company"). Capitalized terms used herein and not otherwise defined in this Amendment have the meanings set forth in the Schedule 13G. This Amendment amends and restates Item 4 in its entirety as set forth below. Item 4. Ownership (a) Amount Beneficially Owned As of the date of this filing, D.B. Zwirn & Co., L.P., DBZ GP, LLC, Zwirn Holdings, LLC, and Daniel B. Zwirn may each be deemed the beneficial owner of (i) 290,460 Shares owned by D.B. Zwirn Special Opportunities Fund, L.P. and (ii) 427,540 Shares owned by D.B. Zwirn Special Opportunities Fund, Ltd. (each entity referred to in (i) through (ii) is herein referred to as a "Fund" and, collectively, as the "Funds"). D.B. Zwirn & Co., L.P. is the manager of each of the Funds, and consequently has voting control and investment discretion over the Shares held by each of the Funds. Daniel B. Zwirn is the managing member of and thereby controls Zwirn Holdings, LLC, which in turn is the managing member of and thereby controls DBZ GP, LLC, which in turn is the general partner of and thereby controls D.B. Zwirn & Co., L.P. The foregoing should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of Shares owned by another Reporting Person. In addition, each of D.B. Zwirn & Co., L.P., DBZ GP, LLC, Zwirn Holdings, LLC, and Daniel B. Zwirn disclaims beneficial ownership of the Shares held by the Funds. (b) Percent of Class Based upon the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2007, there were 5,868,334 Shares outstanding as of November 14, 2007. Therefore, (i) D.B. Zwirn Special Opportunities Fund, L.P. owns approximately 4.95% of the outstanding Shares, (ii) D.B. Zwirn Special Opportunities Fund, Ltd. owns approximately 7.29% of the outstanding Shares and (iii) each of D.B. Zwirn & Co., L.P., DBZ GP, LLC, Zwirn Holdings, LLC, and Daniel B. Zwirn may be deemed to beneficially own 12.24% of the outstanding Shares. The foregoing should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of Shares owned by another Reporting Person. (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: See Item 4(a) (ii) Shared power to vote or to direct the vote See Item 4(a) (iii) Sole power to dispose or to direct the disposition of See Item 4(a) (iv) Shared power to dispose or to direct the disposition of See Item 4(a) CUSIP No. 34958F107 13G/A Page 9 of 9 Pages SIGNATURE After reasonable inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information with respect to it set forth in this statement is true, complete, and correct. Dated: November 28, 2007 D.B. ZWIRN SPECIAL OPPORTUNITIES D.B. ZWIRN SPECIAL OPPORTUNITIES FUND, L.P. FUND, LTD. By: D.B. Zwirn & Co., L.P. By: D.B. Zwirn & Co., L.P. By: DBZ GP, LLC, By: DBZ GP, LLC, its General Partner its General Partner By: Zwirn Holdings, LLC, By: Zwirn Holdings, LLC, its Managing Member its Managing Member D.B. ZWIRN & CO., L.P. ZWIRN HOLDINGS, LLC By: DBZ GP, LLC, its General Partner By: Zwirn Holdings, LLC, its Managing Member DBZ GP, LLC HCM/Z SPECIAL OPPORTUNITIES LLC By: Zwirn Holdings, LLC, By: D.B. Zwirn & Co., L.P. its Managing Member By: DBZ GP, LLC, its General Partner By: Zwirn Holdings, LLC, its Managing Member By: /s/ Lawrence D. Cutler --------------------------- Name: Lawrence D. Cutler Title: Authorized Signatory /s/ Lawrence D. Cutler --------------------------- LAWRENCE D. CUTLER, as Attorney-in-Fact for Daniel B. Zwirn The Power of Attorney dated as of November 7, 2007 executed by Daniel B. Zwirn, authorizing Lawrence D. Cutler to sign and file this Schedule 13G/A on Daniel B. Zwirn's behalf, which was filed with the Schedule 13G filed with the Securities and Exchange Commission on November 19, 2007 by such Reporting Persons with respect to the common stock of Oracle Healthcare Acquisition Corp., is hereby incorporated by reference.