SECURITIES & EXCHANGE COMMISSION Washington, D.C. 20549 ---------------------- SCHEDULE 13D* (Rule 13d-101) Amendment No. 4 INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(a) NAVISTAR INTERNATIONAL CORPORATION (Name of Issuer) Common Stock (Title of Class of Securities) 63934E108 (CUSIP Number) Owl Creek Asset Management, L.P. 640 Fifth Avenue, 20th Floor, New York, NY 10019, Attn: Daniel Sapadin (212) 688-2550 With a copy to: Schulte Roth & Zabel LLP 919 Third Avenue, New York, NY 10022, Attn: Marc Weingarten, Esq. (212) 756-2000 (Name, address and telephone number of person authorized to receive notices and communications) July 16, 2009 (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 Rule 13d-1(e), Rule 13d-1(f) or Rule 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 Rule 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 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 purposes 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 16 Pages) CUSIP No. 63934E108 13D Page 2 of 16 Pages ---------------------------------------------------------------------------- (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Owl Creek I, L.P. ----------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [ ] (b) [X] ----------------------------------------------------------------------------- (3) SEC USE ONLY ----------------------------------------------------------------------------- (4) SOURCE OF FUNDS ** WC, OO ----------------------------------------------------------------------------- (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 ----------------------------------------------------------------------------- NUMBER OF (7) SOLE VOTING POWER -0- SHARES -------------------------------------------------------------- BENEFICIALLY (8) SHARED VOTING POWER 83,302 OWNED BY -------------------------------------------------------------- EACH (9) SOLE DISPOSITIVE POWER -0- REPORTING -------------------------------------------------------------- PERSON WITH (10) SHARED DISPOSITIVE POWER 83,302 ----------------------------------------------------------------------------- (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 83,302 ----------------------------------------------------------------------------- (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ** [ ] ----------------------------------------------------------------------------- (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.12% ----------------------------------------------------------------------------- (14) TYPE OF REPORTING PERSON ** PN ----------------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 63934E108 13D Page 3 of 16 Pages ----------------------------------------------------------------------------- (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Owl Creek II, L.P. ----------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [ ] (b) [X] ----------------------------------------------------------------------------- (3) SEC USE ONLY ----------------------------------------------------------------------------- (4) SOURCE OF FUNDS ** WC, OO ----------------------------------------------------------------------------- (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 ----------------------------------------------------------------------------- NUMBER OF (7) SOLE VOTING POWER -0- SHARES -------------------------------------------------------------- BENEFICIALLY (8) SHARED VOTING POWER 859,432 OWNED BY -------------------------------------------------------------- EACH (9) SOLE DISPOSITIVE POWER -0- REPORTING -------------------------------------------------------------- PERSON WITH (10) SHARED DISPOSITIVE POWER 859,432 ----------------------------------------------------------------------------- (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 859,432 ----------------------------------------------------------------------------- (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ** [ ] ----------------------------------------------------------------------------- (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.22% ----------------------------------------------------------------------------- (14) TYPE OF REPORTING PERSON ** PN ----------------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 63934E108 13D Page 4 of 16 Pages ---------------------------------------------------------------------------- (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Owl Creek Advisors, LLC ----------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [ ] (b) [X] ----------------------------------------------------------------------------- (3) SEC USE ONLY ----------------------------------------------------------------------------- (4) SOURCE OF FUNDS ** WC, OO ----------------------------------------------------------------------------- (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 ----------------------------------------------------------------------------- NUMBER OF (7) SOLE VOTING POWER -0- SHARES -------------------------------------------------------------- BENEFICIALLY (8) SHARED VOTING POWER 942,734 OWNED BY -------------------------------------------------------------- EACH (9) SOLE DISPOSITIVE POWER -0- REPORTING -------------------------------------------------------------- PERSON WITH (10) SHARED DISPOSITIVE POWER 942,734 ----------------------------------------------------------------------------- (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 942,734 ----------------------------------------------------------------------------- (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ** [ ] ----------------------------------------------------------------------------- (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.34% ----------------------------------------------------------------------------- (14) TYPE OF REPORTING PERSON ** CO ----------------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 63934E108 13D Page 5 of 16 Pages ----------------------------------------------------------------------------- (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Owl Creek Asset Management, L.P. ----------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [ ] (b) [X] ----------------------------------------------------------------------------- (3) SEC USE ONLY ----------------------------------------------------------------------------- (4) SOURCE OF FUNDS ** WC, OO ----------------------------------------------------------------------------- (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 ----------------------------------------------------------------------------- NUMBER OF (7) SOLE VOTING POWER -0- SHARES -------------------------------------------------------------- BENEFICIALLY (8) SHARED VOTING POWER 3,061,176 OWNED BY -------------------------------------------------------------- EACH (9) SOLE DISPOSITIVE POWER -0- REPORTING -------------------------------------------------------------- PERSON WITH (10) SHARED DISPOSITIVE POWER 3,061,176 ----------------------------------------------------------------------------- (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,061,176 ----------------------------------------------------------------------------- (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ** [ ] ----------------------------------------------------------------------------- (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.35% ----------------------------------------------------------------------------- (14) TYPE OF REPORTING PERSON ** PN ----------------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 63934E108 13D Page 6 of 16 Pages ----------------------------------------------------------------------------- (1) NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Jeffrey A. Altman ----------------------------------------------------------------------------- (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ** (a) [ ] (b) [X] ----------------------------------------------------------------------------- (3) SEC USE ONLY ----------------------------------------------------------------------------- (4) SOURCE OF FUNDS ** WC, OO ----------------------------------------------------------------------------- (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 ----------------------------------------------------------------------------- NUMBER OF (7) SOLE VOTING POWER -0- SHARES -------------------------------------------------------------- BENEFICIALLY (8) SHARED VOTING POWER 4,003,910 OWNED BY -------------------------------------------------------------- EACH (9) SOLE DISPOSITIVE POWER -0- REPORTING -------------------------------------------------------------- PERSON WITH (10) SHARED DISPOSITIVE POWER 4,003,910 ----------------------------------------------------------------------------- (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,003,910 ----------------------------------------------------------------------------- (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ** [ ] ----------------------------------------------------------------------------- (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.70% ----------------------------------------------------------------------------- (14) TYPE OF REPORTING PERSON ** IN ----------------------------------------------------------------------------- ** SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 63934E108 13D Page 7 of 16 Pages The Schedule 13D initially filed on January 30, 2008 and amended by Amendment No. 1 filed on October 8, 2008, Amendment No. 2 filed on November 18, 2008 and Amendment No. 3 filed on May 8, 2009(the "Amended Schedule 13D"), relating to the common stock, par value $.10 (the "Common Stock"), of Navistar International Corporation (the "Issuer"), a Delaware corporation, whose principal executive offices are located at 4201 Winfield Road, P.O. Box 1488, Warrenville, Illinois 60555, is hereby amended by this Amendment No. 4 to the Schedule 13D. Items 3, 5 and 6 of the Amended Schedule 13D are hereby amended and restated in their entirety as follows (and the remainder of the Amended Schedule 13D shall remain unchanged): CUSIP No. 63934E108 13D Page 8 of 16 Pages Item 3. Source and Amount of Funds and Other Consideration. The 4,003,910 shares of Common Stock reported herein as being beneficially owned by the Reporting Persons were acquired at an aggregate purchase price of approximately $136,368,099.01. Such shares are held by the Reporting Persons in commingled margin accounts maintained at UBS Securities LLC, which may extend margin credit to the Reporting Persons from time to time, subject to applicable federal margin regulations, stock exchange rules and credit policies. In such instances, the positions held in the margin account are pledged as collateral security for the repayment of debit balances in the account. The margin accounts bear interest at a rate based upon the broker's call rate from time to time in effect. Since other securities are held in the margin accounts, it is not possible to determine the amounts, if any, of margin used to purchase the shares of Common Stock reported herein. CUSIP No. 63934E108 13D Page 9 of 16 Pages Item 5. Interest in Securities of the Issuer. A. Owl Creek I, L.P. (a) Aggregate number of shares beneficially owned: 83,302 Percentage: 0.12% The percentages used herein and in the rest of Item 5 are calculated based upon the 70,300,666 shares of Common Stock issued and outstanding as of May 31, 2009 as reported by the Issuer in its Form 10-Q for the quarterly period ended April 30, 2009, filed on June 9, 2009. (b) 1. Sole power to vote or direct vote: -0- 2. Shared power to vote or direct vote: 83,302 3. Sole power to dispose or direct the disposition: -0- 4. Shared power to dispose or direct the disposition: 83,302 (c) The acquisition/sale dates, number of shares of Common Stock acquired/sold and the price per share for all transactions by Owl Creek I in the Common Stock within the last 60 days, are set forth in Schedule A and are incorporated by reference. (d) Owl Creek Advisors, LLC, the general partner of Owl Creek I, has the power to direct the affairs of Owl Creek I, including decisions respecting the receipt of dividends from the shares and the disposition of the proceeds from the sale of the shares. Mr. Altman is the managing member of Owl Creek Advisors, LLC and in that capacity directs its operations. (e) Not applicable. B. Owl Creek II, L.P. (a) Aggregate number of shares beneficially owned: 859,432 Percentage: 1.22% (b) 1. Sole power to vote or direct vote: -0- 2. Shared power to vote or direct vote: 859,432 3. Sole power to dispose or direct the disposition: -0- 4. Shared power to dispose or direct the disposition: 859,432 (c) The acquisition/sale dates, number of shares of Common Stock acquired/sold and the price per share for all transactions by Owl Creek II in the Common Stock within the last 60 days, are set forth in Schedule A and are incorporated by reference. (d) Owl Creek Advisors, LLC, the general partner of Owl Creek II, has the power to direct the affairs of Owl Creek II, including decisions respecting the receipt of dividends from the shares and the disposition of the proceeds from the sale of the shares. Mr. Altman is the managing member of Owl Creek Advisors, LLC and in that capacity directs its operations. (e) Not applicable. CUSIP No. 63934E108 13D Page 10 of 16 Pages C. Owl Creek Advisors, LLC (a) Aggregate number of shares beneficially owned: 942,734 Percentage: 1.34% (b) 1. Sole power to vote or direct vote: -0- 2. Shared power to vote or direct vote: 942,734 3. Sole power to dispose or direct the disposition: -0- 4. Shared power to dispose or direct the disposition: 942,734 (c) Owl Creek Advisors, LLC did not enter into any transactions in the Common Stock of the Issuer within the last 60 days. However, Owl Creek Advisors, LLC is the general partner of Owl Creek I and Owl Creek II, and has the power to direct the affairs of Owl Creek I and Owl Creek II. The acquisition/sale dates, number of shares of Common Stock acquired/sold and the price per share for all transactions by Owl Creek I and Owl Creek II in the Common Stock within the last 60 days, are set forth in Schedule A and are incorporated by reference. (d) Owl Creek Advisors, LLC, as the general partner of Owl Creek I and Owl Creek II, has the power to direct the affairs of Owl Creek I and Owl Creek II, including decisions respecting the receipt of dividends from the shares and the disposition of the proceeds from the sale of the shares. Mr. Altman is the managing member of Owl Creek Advisors, LLC and in that capacity directs its operations. (e) Not applicable. D. Owl Creek Asset Management, L.P. (a) Aggregate number of shares beneficially owned: 3,061,176 Percentage: 4.35% (b) 1. Sole power to vote or direct vote: -0- 2. Shared power to vote or direct vote: 3,061,176 3. Sole power to dispose or direct the disposition: -0- 4. Shared power to dispose or direct the disposition: 3,061,176 (c) Owl Creek Asset Management, L.P. did not enter into any transactions in the Common Stock of the Issuer within the last 60 days. However, Owl Creek Asset Management, L.P. is the investment manager to Owl Creek Overseas and SRIF and has the power to direct the investment activities of Owl Creek Overseas and SRIF. The acquisition dates, number of shares of Common Stock acquired and the price per share for all transactions by Owl Creek Overseas and SRIF in the Common Stock within the last 60 days, are set forth in Schedule A and are incorporated by reference. (d) Owl Creek Asset Management, L.P., as the investment manager to Owl Creek Overseas and SRIF, has the power to direct the investment activities of Owl Creek Overseas and SRIF, including decisions respecting the receipt of dividends from the shares and the disposition of the proceeds from the sale of the shares. Mr. Altman is the managing member of the general partner of Owl Creek Asset Management, L.P. and in that capacity directs its operations. (e) Not applicable. E. Jeffrey A. Altman (a) Aggregate number of shares beneficially owned: 4,003,910 Percentage: 5.70% (b) 1. Sole power to vote or direct vote: -0- 2. Shared power to vote or direct vote: 4,003,910 3. Sole power to dispose or direct the disposition: -0- 4. Shared power to dispose or direct the disposition: 4,003,910 (c) Mr. Altman did not enter into any transactions in the Common Stock of the Issuer within the last 60 days. The acquisition/sale dates, number of shares of Common Stock acquired/sold and the price per share for all transactions by Owl Creek I, Owl Creek II, Owl Creek Overseas and SRIF in the Common Stock within the last 60 days, are set forth in Schedule A and are incorporated by reference. (d) Not applicable. (e) Not applicable. CUSIP No. 63934E108 13D Page 11 of 16 Pages Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Company. As of the date hereof, the Reporting Persons own, in the aggregate, approximately $33,000,000 (subject to the sale of approximately $2,200,000 subject to settlement) of the Issuer's $1,100,000,000 bank term loan pursuant to a loan agreement dated January 19, 2007, and approximately $12,000,000 (subject to the sale of approximately $800,000 subject to settlement) of the Issuer's $400,000,000 revolving credit facility under such loan agreement. CUSIP No. 63934E108 13D Page 12 of 16 Pages SIGNATURES After reasonable inquiry and to the best of knowledge and belief of the undersigned, the undersigned certify that the information set forth in this statement is true, complete and correct. DATED: July 20, 2009 /s/ JEFFREY A. ALTMAN ------------------------------------------- Jeffrey A. Altman, individually, and as managing member of Owl Creek Advisors, LLC, for itself and as general partner of Owl Creek I, L.P. and Owl Creek II L.P., and as managing member of the general partner of Owl Creek Asset Management, L.P., for itself and as investment manager to Owl Creek Overseas Fund, Ltd. and Owl Creek Socially Responsible Investment Fund, Ltd. CUSIP No. 63934E108 13D Page 13 of 16 Pages Schedule A OWL CREEK I, L.P. Number of shares Open market/ Price per Date of Transaction Purchased/(Sold) Cross Transaction share 6/1/2009 (900) C (39.81) 7/1/2009 (16,700) O (42.52) 7/1/2009 2,700 C 43.60 7/2/2009 (2,600) O (40.02) 7/16/2009 (4,100) O (40.96) 7/17/2009 (1,000) O (40.13) CUSIP No. 63934E108 13D Page 14 of 16 Pages OWL CREEK II, L.P. Date of Number of shares Open market/ Price per Transaction Purchased/(Sold) Cross Transaction share 7/1/2009 32,300 C 43.60 7/1/2009 (171,400) O (42.52) 7/2/2009 (26,900) O (40.02) 7/16/2009 (42,150) O (40.96) 7/17/2009 (11,050) O (40.13) CUSIP No. 63934E108 13D Page 15 of 16 Pages OWL CREEK OVERSEAS FUND, LTD. Date of Number of shares Open market/ Cross Price per Transaction Purchased/(Sold) Transaction share 6/1/2009 15,400 C 39.81 7/1/2009 (38,000) C (43.60) 7/1/2009 (300,000) O (42.08) 7/1/2009 (50,000) O (40.48) 7/1/2009 (244,500) O (42.52) 7/2/2009 (92,800) O (40.02) 7/16/2009 (147,500) O (40.96) 7/17/2009 (38,600) O (40.13) CUSIP No. 63934E108 13D Page 16 of 16 Pages OWL CREEK SOCIALLY RESPONSIBLE INVESTMENT FUND, LTD. Date of Number of shares Open market/ Cross Price per Transaction Purchased/(Sold) Transaction share 6/1/2009 (14,500) C (39.81 7/1/2009 3,000 C 43.60 7/1/2009 (17,400) O (42.52) 7/2/2009 (2,550) O (40.02) 7/16/2009 (4,500) O (40.96) 7/17/2009 (1,100) O (40.13)