SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 September 29, 2004 -------------------------------------------------------------------------------- Date of Report (Date of earliest event reported) Wabash National Corporation -------------------------------------------------------------------------------- (Exact name of registrant as specified in its charter) Delaware 1-10883 52-1375208 -------------------------------------------------------------------------------- (State or other (Commission (IRS Employer jurisdiction File No.) Identification No.) of incorporation) 1000 Sagamore Parkway South, Lafayette, Indiana 47905 -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip Code) (765) 771-5310 -------------------------------------------------------------------------------- Registrant's telephone number, including area code: Not applicable -------------------------------------------------------------------------------- (Former name or former address, if changed since last report) Exhibit Index on Page 4 Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Item 7.01. Regulation FD Disclosure. On September 29, 2004, Wabash National Corporation amended its Loan and Security Agreement attached hereto as Exhibit 10.20 and incorporated herein by reference. Page 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this Report to be signed on its behalf by the undersigned thereunto duly authorized. WABASH NATIONAL CORPORATION Date: September 29, 2004 By: /s/ Robert J. Smith ------------------------- Robert J. Smith Vice President and Controller Page 3 EXHIBIT INDEX EXHIBIT NO. DESCRIPTION -------------- ------------------------------------ 10.20 Wabash National Corporation Waiver and Amendment No. 4 to Loan and Security Agreement dated September 29, 2004 Page 4