================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K --------- [x] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the year ended December 31, 2003 or [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________ Commission File No. 0-25642 -------------- A. Full title of the plan and the address of the plan, if different from that of the issuer named below: COMMONWEALTH INDUSTRIES, INC. 401(K) PLAN AND COMMONWEALTH ALUMINUM LEWISPORT, LLC HOURLY 401(K) PLAN -------------- B. Name of issuer of securities held pursuant to the plan and the address of its principal executive office: COMMONWEALTH INDUSTRIES, INC. 500 West Jefferson Street PNC Plaza - 19th Floor Louisville, Kentucky 40202-2823 ================================================================================ FORM 11-K Commonwealth Industries, Inc. 401(k) Plan and Commonwealth Aluminum Lewisport, LLC Hourly 401(k) Plan December 31, 2003 The following financial statements and supplemental schedule of the Plans filed as exhibits to this Form 11-K are incorporated herein by reference and submitted in paper format on Form SE: Financial Statements: Statements of Net Assets Available for Benefits as of December 31, 2003 and 2002 Statements of Changes in Net Assets Available for Benefits for the years ended December 31, 2003 and 2002 Notes to Financial Statements Supplemental Schedule: Schedule H, Line 4i - Schedule of Assets (Held at End of Year), December 31, 2003 Page ---- Signature Page 3 Exhibit Index 4 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Benefits Committee of Commonwealth Industries, Inc. has duly caused this annual report to be signed on its behalf by the undersigned thereunto duly authorized. Commonwealth Industries, Inc. 401(k) Plan and Commonwealth Aluminum Lewisport, LLC Hourly 401(k) Plan By: /s/ Henry Del Castillo ------------------------ Henry Del Castillo Vice President Finance Commonwealth Industries, Inc. and a member of the Benefits Committee Date: June 28, 2004 Exhibit Index ------------- Exhibit Number Description - ------- ----------- 13.1* Financial statements and supplemental schedule of the Commonwealth Industries, Inc. 401(k) Plan as of December 31, 2003 and 2002, and for the years ended December 31, 2003 and 2002, including report of independent registered public accounting firm. 13.2* Financial statements and supplemental schedule of the Commonwealth Aluminum Lewisport, LLC Hourly 401(k) Plan as of December 31, 2003 and 2002, and for the years ended December 31, 2003 and 2002, including report of independent registered public accounting firm. 23.1 Consent of PricewaterhouseCoopers LLP 23.2 Consent of PricewaterhouseCoopers LLP * Exhibits 13.1 and 13.2 above are submitted in paper format on Form SE.