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

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 10)*

                   INTEGRA LIFESCIENCES HOLDINGS CORPORATION
                                (Name of Issuer)

                     Common Stock, Par Value $.01 Per Share
                         (Title of Class of Securities)

                                    457985208
                                 (CUSIP Number)

                              Stephen M. Vine, Esq.
                    Akin, Gump, Strauss, Hauer & Feld, L.L.P.
                               590 Madison Avenue
                            New York, New York 10022
                                 (212) 872-1000
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                January 13, 2006
                      (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  that is the subject of this  Schedule  13D, and is filing this
schedule because of ss.ss.240.13d-1(e),  240.13d-1(f) or 240.13d-1(g), check the
following box.   [  ]

Note:  Schedules  filed in paper format shall include a signed original and five
copies of the  schedule,  including  all exhibits.  See  ss.240.13d-7  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).


                         Continued on following page(s)
                               Page 1 of 16 Pages


CUSIP No. 457985208 Page 2 of 16 Pages 1 Names of Reporting Persons I.R.S. Identification Nos. of above persons (entities only) QUANTUM INDUSTRIAL PARTNERS LDC 2 Check the Appropriate Box If a Member of a Group (See Instructions) a. [ ] b. [X] 3 SEC Use Only 4 Source of Funds (See Instructions) Not Applicable 5 Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] 6 Citizenship or Place of Organization Cayman Islands 7 Sole Voting Power Number of 1,380,687 Shares Beneficially 8 Shared Voting Power Owned By 0 Each Reporting 9 Sole Dispositive Power Person 1,380,687 With 10 Shared Dispositive Power 0 11 Aggregate Amount Beneficially Owned by Each Reporting Person 1,380,687 12 Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [X] 13 Percent of Class Represented By Amount in Row (11) 4.9% 14 Type of Reporting Person (See Instructions) OO; IV

CUSIP No. 457985208 Page 3 of 16 Pages 1 Names of Reporting Persons I.R.S. Identification Nos. of above persons (entities only) QIH MANAGEMENT INVESTOR, L.P. 2 Check the Appropriate Box If a Member of a Group (See Instructions) a. [ ] b. [X] 3 SEC Use Only 4 Source of Funds (See Instructions) Not Applicable 5 Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] 6 Citizenship or Place of Organization Delaware 7 Sole Voting Power Number of 1,380,687 Shares Beneficially 8 Shared Voting Power Owned By 0 Each Reporting 9 Sole Dispositive Power Person 1,380,687 With 10 Shared Dispositive Power 0 11 Aggregate Amount Beneficially Owned by Each Reporting Person 1,380,687 12 Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [X] 13 Percent of Class Represented By Amount in Row (11) 4.9% 14 Type of Reporting Person (See Instructions) PN; IA

CUSIP No. 457985208 Page 4 of 16 Pages 1 Names of Reporting Persons I.R.S. Identification Nos. of above persons (entities only) QIH MANAGEMENT LLC 2 Check the Appropriate Box If a Member of a Group (See Instructions) a. [ ] b. [X] 3 SEC Use Only 4 Source of Funds (See Instructions) Not Applicable 5 Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] 6 Citizenship or Place of Organization Delaware 7 Sole Voting Power Number of 1,380,687 Shares Beneficially 8 Shared Voting Power Owned By 0 Each Reporting 9 Sole Dispositive Power Person 1,380,687 With 10 Shared Dispositive Power 0 11 Aggregate Amount Beneficially Owned by Each Reporting Person 1,380,687 12 Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [X] 13 Percent of Class Represented By Amount in Row (11) 4.9% 14 Type of Reporting Person (See Instructions) OO

CUSIP No. 457985208 Page 5 of 16 Pages 1 Names of Reporting Persons I.R.S. Identification Nos. of above persons (entities only) SOROS FUND MANAGEMENT LLC 2 Check the Appropriate Box If a Member of a Group (See Instructions) a. [ ] b. [X] 3 SEC Use Only 4 Source of Funds (See Instructions) Not Applicable 5 Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] 6 Citizenship or Place of Organization Delaware 7 Sole Voting Power Number of 1,380,687 Shares Beneficially 8 Shared Voting Power Owned By 0 Each Reporting 9 Sole Dispositive Power Person 1,380,687 With 10 Shared Dispositive Power 0 11 Aggregate Amount Beneficially Owned by Each Reporting Person 1,380,687 12 Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [X] 13 Percent of Class Represented By Amount in Row (11) 4.9% 14 Type of Reporting Person (See Instructions) OO; IA

CUSIP No. 457985208 Page 6 of 16 Pages 1 Names of Reporting Persons I.R.S. Identification Nos. of above persons (entities only) GEORGE SOROS (in the capacity described herein) 2 Check the Appropriate Box If a Member of a Group (See Instructions) a. [ ] b. [X] 3 SEC Use Only 4 Source of Funds (See Instructions) Not Applicable 5 Check Box If Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e) [ ] 6 Citizenship or Place of Organization United States 7 Sole Voting Power Number of 1,745,300 Shares Beneficially 8 Shared Voting Power Owned By 0 Each Reporting 9 Sole Dispositive Power Person 1,745,300 With 10 Shared Dispositive Power 0 11 Aggregate Amount Beneficially Owned by Each Reporting Person 1,745,300 12 Check Box If the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [ ] 13 Percent of Class Represented By Amount in Row (11) 6.2% 14 Type of Reporting Person (See Instructions) IA

CUSIP No. 457985208 Page 7 of 16 Pages This Amendment No. 10 to Schedule 13D relates to shares of Common Stock, $0.01 par value per share (the "Shares"), of Integra LifeSciences Holdings Corporation (the "Issuer"). This Amendment No. 10 supplementally amends the initial statement on Schedule 13D, dated April 8, 1999, and all amendments thereto (collectively, the "Initial Statement"), filed by the Reporting Persons. This Amendment No. 10 is being filed by the Reporting Persons to report that the number of Shares that the Reporting Persons may be deemed to beneficially own has decreased by more than one percent of the current amount of outstanding Shares, as disclosed in the Issuer's quarterly report on Form 10-Q filed on November 9, 2005. Capitalized terms used but not defined herein shall have the meanings ascribed to them in the Initial Statement. The Initial Statement is supplementally amended as follows. Item 2. Identity and Background. This Statement is being filed on behalf of each of the following persons (collectively, the "Reporting Persons"): i) Quantum Industrial Partners LDC ("QIP"); ii) QIH Management Investor, L.P. ("QIHMI"); iii) QIH Management LLC ("QIH Management"); iv) Soros Fund Management LLC ("SFM LLC") and v) Mr. George Soros ("Mr. Soros"). This Statement relates to Shares held for the accounts of QIP and SFM Domestic Investments LLC ("SFM Domestic Investments"). QIHMI is a minority shareholder of, and is vested with investment discretion with respect to portfolio assets held for the account of, QIP. The sole general partner of QIHMI is QIH Management. SFM LLC is the sole managing member of QIH Management. Mr. Soros is the Chairman of SFM LLC and the sole managing member of SFM Domestic Investments. Item 5. Interest in Securities of the Issuer. According to information provided by the Issuer in its most recent quarterly report on Form 10-Q, the number of Shares outstanding was 28,050,652 as of November 4, 2005. (a) (i) Each of QIP, QIHMI, QIH Management and SFM LLC may be deemed the beneficial owner of 1,380,687 Shares (approximately 4.9% of the total number of Shares outstanding). (ii) Mr. Soros may be deemed the beneficial owner of 1,745,300 Shares (approximately 6.2% of the total number of Shares outstanding). This number includes (A) 1,380,687 Shares held for the account of QIP and (B) 364,613 Shares held for the account of SFM Domestic Investments. (b) (i) Each of QIP, QIHMI, QIH Management and SFM LLC (by virtue of the QIP Contract) and Mr. Soros (as a result of his position with SFM LLC) may be deemed to have the sole power to direct the voting and disposition of the 1,380,687 Shares held for the account of QIP. (ii) Mr. Soros in his capacity as the sole managing member of SFM Domestic Investments may be deemed to have the sole power to direct the voting and disposition of the 364,613 Shares held for the account of SFM Domestic Investments.

CUSIP No. 457985208 Page 8 of 16 Pages (c) Except for the transactions listed on Annex A hereto, all of which were effected in the over-the-counter market in routine brokerage transactions, there have been no transactions with respect to the Shares since December 16, 2005 (the date of filing the Reporting Persons' last statement on Schedule 13D) by any of the Reporting Persons. (d) (i) The shareholders of QIP, including Quantum Industrial Holdings, Ltd., a British Virgin Islands international business company, have the right to participate in the receipt of dividends from, or proceeds from the sale of, the securities held for the account of QIP in accordance with their ownership interests in QIP. (ii) Certain members of SFM Domestic Investments have the right to participate in the receipt of dividends from, or proceeds from the sale of, the securities held for the account of SFM Domestic Investments. (e) Not applicable.

CUSIP No. 457985208 Page 9 of 16 Pages SIGNATURES 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, complete and correct. Date: January 19, 2006 QUANTUM INDUSTRIAL PARTNERS LDC By: /s/ Jodye M. Anzalotta ------------------------------------- Jodye M. Anzalotta Attorney-in-Fact QIH MANAGEMENT INVESTOR, L.P. By: QIH Management LLC, its General Partner By: Soros Fund Management LLC, its Managing Member By: /s/ Jodye M. Anzalotta ------------------------------------- Jodye M. Anzalotta Assistant General Counsel QIH MANAGEMENT LLC By: Soros Fund Management LLC, its Managing Member By: /s/ Jodye M. Anzalotta ------------------------------------- Jodye M. Anzalotta Assistant General Counsel SOROS FUND MANAGEMENT LLC By: /s/ Jodye M. Anzalotta ------------------------------------- Jodye M. Anzalotta Assistant General Counsel GEORGE SOROS By: /s/ Jodye M. Anzalotta ------------------------------------- Jodye M. Anzalotta Attorney-in-Fact

CUSIP No. 457985208 Page 10 of 16 Pages ANNEX A RECENT TRANSACTIONS IN THE SECURITIES OF INTEGRA LIFESCIENCES HOLDINGS CORPORATION Date of Nature of Number of For the Account of Transaction Transaction Securities Price - --------------------------- ------------ ------------ ----------- ----- - ------------------------------------------------------------------------------------------- Quantum Industrial Partners LDC/SFM Domestic Investments LLC/1/ December 20, 2005 Sale 24,100 $36.00 - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 21, 2005 Sale 38,845 $36.00 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 21, 2005 Sale 1,015 $36.01 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 21, 2005 Sale 300 $36.02 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 21, 2005 Sale 700 $36.03 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 21, 2005 Sale 300 $36.04 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 21, 2005 Sale 500 $36.05 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 21, 2005 Sale 100 $36.06 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 22, 2005 Sale 15,803 $36.02 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 23, 2005 Sale 300 $36.11 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 23, 2005 Sale 500 $36.12 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 23, 2005 Sale 400 $36.14 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 23, 2005 Sale 3,500 $36.20 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 6,600 $36.00 LDC/SFM Domestic Investments LLC /1/ - -------------------------------------------------------------------------------------------

CUSIP No. 457985208 Page 11 of 16 Pages Date of Nature of Number of For the Account of Transaction Transaction Securities Price - --------------------------- ------------ ------------ ----------- ----- Quantum Industrial Partners December 27, 2005 Sale 911 $36.05 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 600 $36.06 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 2,687 $36.11 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 3 $36.13 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 400 $36.14 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 5,793 $36.15 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 1,100 $36.16 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 200 $36.17 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 1,553 $36.19 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 100 $36.20 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 553 $36.23 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 500 $36.24 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 27, 2005 Sale 100 $36.26 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 29, 2005 Sale 34,098 $36.00 LDC/SFM Domestic Investments LLC /1/ - -------------------------------------------------------------------------------------------

CUSIP No. 457985208 Page 12 of 16 Pages Date of Nature of Number of For the Account of Transaction Transaction Securities Price - --------------------------- ------------ ------------ ----------- ----- - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 29, 2995 Sale 1,802 $36.01 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 29, 2005 Sale 400 $36.02 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 29, 2005 Sale 600 $36.03 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 29, 2005 Sale 11,500 $36.05 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 29, 2005 Sale 1,500 $36.06 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 29, 2005 Sale 100 $36.09 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 29, 2005 Sale 9,600 $36.10 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners December 29, 2005 Sale 400 $36.11 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 11, 2006 Sale 5,000 $36.00 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 12, 2006 Sale 63,022 $36.00 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 12, 2006 Sale 11,587 $36.01 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 12, 2006 Sale 2,702 $36.02 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 12, 2006 Sale 100 $36.04 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 12, 2006 Sale 2,589 $36.05 LDC/SFM Domestic Investments LLC /1/ - -------------------------------------------------------------------------------------------

CUSIP No. 457985208 Page 13 of 16 Pages Date of Nature of Number of For the Account of Transaction Transaction Securities Price - --------------------------- ------------ ------------ ----------- ----- - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 18,935 $36.00 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 1,346 $36.01 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 609 $36.02 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 1,910 $36.03 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 2,200 $36.04 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 600 $36.06 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 300 $36.07 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 1,300 $36.08 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 25,698 $36.10 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 9,883 $36.11 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 12,154 $36.12 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 6,471 $36.13 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 2,294 $36.14 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 8,000 $36.15 LDC/SFM Domestic Investments LLC /1/ - -------------------------------------------------------------------------------------------

CUSIP No. 457985208 Page 14 of 16 Pages Date of Nature of Number of For the Account of Transaction Transaction Securities Price - --------------------------- ------------ ------------ ----------- ----- - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 7,700 $36.16 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 13, 2006 Sale 600 $36.17 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 23,674 $36.00 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 13,171 $36.01 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 1,125 $36.02 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 100 $36.04 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 600 $36.05 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 200 $36.07 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 300 $36.08 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 16,437 $36.10 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 1,003 $36.11 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 3,800 $36.12 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- uantum Industrial Partners January 17, 2006 Sale 2,040 $36.13 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 2,061 $36.14 LDC/SFM Domestic Investments LLC /1/ - -------------------------------------------------------------------------------------------

CUSIP No. 457985208 Page 15 of 16 Pages Date of Nature of Number of For the Account of Transaction Transaction Securities Price - --------------------------- ------------ ------------ ----------- ----- - ------------------------------------------------------------------------------------------- QQuantum Industrial Partners January 17, 2006 Sale 2,900 $36.15 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 150 $36.16 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 600 $36.17 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 1,118 $36.20 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 600 $36.21 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 1,000 $36.22 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 1,039 $36.23 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 500 $36.24 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 200 $36.26 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 885 $36.29 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 97 $36.30 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 500 $36.31 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 17, 2006 Sale 900 $36.32 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 18, 2006 Sale 75,776 $36.00 LDC/SFM Domestic Investments LLC /1/ - -------------------------------------------------------------------------------------------

CUSIP No. 457985208 Page 16 of 16 Pages Date of Nature of Number of For the Account of Transaction Transaction Securities Price - --------------------------- ------------ ------------ ----------- ----- - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 18, 2006 Sale 100 $36.01 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 18, 2006 Sale 100 $36.05 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 18, 2006 Sale 61 $36.06 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 18, 2006 Sale 1,000 $36.07 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- Quantum Industrial Partners January 18, 2006 Sale 100 $36.08 LDC/SFM Domestic Investments LLC /1/ - ------------------------------------------------------------------------------------------- - ------------------ /1/ For each of these transactions, approximately 79.11% of the shares of common stock, par value $0.01 per share ("Shares"), sold were allocated from the account of Quantum Industrial Partners, LDC and 20.89% of the Shares were allocated from the account of SFM Domestic Investments LLC. For all of these transactions an aggregate of 399,190 Shares were sold by QIP and 105,410 Shares were sold by SFM Domestic Investments.