- ------------------------------------------------------------------------------ SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 --------------- SCHEDULE TO/A (RULE 14d-100) TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR SECTION 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. 4) DETROIT DIESEL CORPORATION (Name of Subject Company (issuer)) DIESEL PROJECT DEVELOPMENT, INC. A WHOLLY OWNED SUBSIDIARY OF DAIMLERCHRYSLER NORTH AMERICA HOLDING CORPORATION (Names of Filing Persons (offerors)) --------------- COMMON STOCK, PAR VALUE $0.01 PER SHARE (Title of Class of Securities) --------------- 250837101 (CUSIP Number of Class of Securities) TIMOTHY P. DYKSTRA PRESIDENT DAIMLERCHRYSLER NORTH AMERICA HOLDING CORPORATION 1000 CHRYSLER DRIVE AUBURN HILLS, MICHIGAN 48326-2766 TELEPHONE: (248) 512-6130 (Name, address and telephone number of person authorized to receive notices and communications on behalf of filing persons) Copy to: J. Michael Schell, Esq. Margaret L. Wolff, Esq. Skadden, Arps, Slate, Meagher & Flom LLP Four Times Square New York, NY 10036-6522 Telephone: 212-735-3000 CALCULATION OF FILING FEE ============================================================================= Transaction Valuation* Amount of Filing Fee $432,852,571 $86,570.52** - ----------------------------------------------------------------------------- * For purposes of calculating amount of filing fee only. This amount assumes (i) the purchase of all outstanding shares of common stock of Detroit Diesel Corporation other than shares beneficially owned by the offerors (18,287,490 shares) and (ii) shares of common stock of Detroit Diesel Corporation subject to options that will be vested and exercisable as of the closing of this offer (532,187 shares). The amount of the filing fee calculated in accordance with Rule 0-11 of the Securities Exchange Act of 1934, as amended, equals 1/50 of 1% of the transaction value. ** This amount has previously been paid. [_] Check the box if any part of the fee is offset as provided by Rule 0-11(a)(2) and identify the filing with which the offsetting fee was previously paid. Identify the previous filing by registration statement number or the Form or Schedule and the date of its filing. Amount Previously Paid: N/A Form or Registration No.: N/A Filing party: N/A Date Filed: N/A [_] Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer. Check the appropriate boxes below to designate any transactions to which the statement relates: [X] third-party tender offer subject to Rule 14d-1. [_] issuer tender offer subject to Rule 13e-4. [_] going-private transaction subject to Rule 13e-3. [_] amendment to Schedule 13D under Rule 13d-2. Check the following box if the filing is a final amendment reporting the results of the tender offer: [_] - ------------------------------------------------------------------------------ This Amendment No. 4 to the Tender Offer Statement on Schedule TO (the "Schedule TO"), filed initially with the Securities and Exchange Commission on July 31, 2000, relates to the third-party tender offer by Diesel Project Development, Inc. (the "Purchaser"), a Delaware corporation and a wholly owned subsidiary of DaimlerChrysler North America Holding Corporation, a Delaware corporation, to purchase all of the shares of common stock, par value $0.01 per share, of Detroit Diesel Corporation, a Delaware corporation, at a price of $23.00 per Share, net to the seller in cash, without interest thereon, upon the terms and subject to the conditions set forth in the Offer to Purchase, dated July 31, 2000 (the "Offer to Purchase"), and in the related Letter of Transmittal (which, together with all amendments or supplements thereto, collectively constitute the "Offer"). ITEMS 1, 4 AND 11. Items 1, 4 and 11 are hereby amended and supplemented to add the following: "On September 12, 2000, DCNA announced that it extended the Offer to 5:00 p.m., New York City time, on Monday, September 25, 2000. A copy of the press release containing such announcement is filed as Exhibit (a)(10) to the Schedule TO and is incorporated herein by reference." ITEM 12. Item 12 is hereby amended and supplemented to add the following exhibit: (a)(10) Press Release, dated September 12, 2000. SIGNATURE After due inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Diesel Project Development, Inc. By: /s/ Joachim Drees --------------------------------- Name: Joachim Drees Title: Vice President and Secretary DaimlerChrysler North America Holding Corporation By: /s/ Timothy P. Dykstra ---------------------------------- Name: Timothy P. Dykstra Title: President Dated: September 12, 2000 EXHIBIT INDEX (a)(10) Press Release, dated September 12, 2000.