1 As filed with the Securities and Exchange Commission on August 19, 1996 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 ___________________ Date of Report (Date of earliest event reported) - August 19, 1996 Commonwealth Aluminum Corporation (Exact name of registrant as specified in its charter) Delaware 0-25642 13-3245741 (State of Incorporation) (Commission file number) (IRS employer identification no.) 1200 Meidinger Tower, Louisville, Kentucky 40202 (Address, including zip code, of principal executive office) (502) 589-8100 (Registrant's telephone no., including area code) 2 Items 1-4. Not Applicable Item 5. Other Events. On August 19, 1996, CasTech Aluminum Group Inc., a Delaware corporation ("CasTech"), Commonwealth Aluminum Corporation, a Delaware corporation (the "Company"), and CALC Corporation, a Delaware corporation and a wholly-owned subsidiary of the Company ("Merger Sub"), entered into the Agreement and Plan of Merger, dated as of August 19, 1996 (the "Agreement"). Pursuant to the Agreement, the Merger Sub will commence a tender offer (the "Offer") within five business days of the date thereof for all of the outstanding shares of the Common Stock of CasTech, par value $0.01 per share (the "Shares") at a price of $20.50 per share, net to the seller in cash. Upon the completion of the Offer and subject to the terms and conditions of the Agreement, the Merger Sub will be merged with and into CasTech (the "Merger"). Pursuant to the Merger, each Share, other than shares owned by the Company, Merger Sub or any other subsidiary of the Company or shares with respect to which appraisal rights are perfected under Delaware law, will be converted into the right to receive an amount in cash equal to $20.50 or such greater amount which may be paid pursuant to the Offer. A copy of the Agreement is attached as Exhibit 2 and is incorporated by reference herein. The foregoing description of the Agreement is qualified in its entirety by reference to such Exhibit. 3 Item 6. Not Applicable Item 7. Financial Statements Pro Forma Financial Information and Exhibits. (a) - (b) Not Applicable. (c) Exhibits Required by Item 601 of Regulation S-K Exhibit No. Description 2 Agreement and Plan of Merger, dated as of August 19, 1996, among CasTech Aluminum Group Inc., Commonwealth Aluminum Corporation, and CALC Corporation. 99 Press Release, dated August 19, 1996, of Commonwealth Aluminum Corporation, announcing its entry into an Agreement and Plan of Merger with CasTech Aluminum Group Inc. 4 SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunder duly authorized. Dated: August 19, 1996 COMMONWEALTH ALUMINUM CORPORATION By: /s/ Mark V. Kaminski Name: Mark V. Kaminski Title: President & Chief Executive Officer 5 EXHIBIT INDEX Sequential Exhibit No. Description Page No. 2 Agreement and Plan of Merger, dated as of August 19, 1996, among CasTech Aluminum Group Inc., Commonwealth Aluminum Corporation, and CALC Corporation. 99 Press Release, dated August 19, 1996, of Commonwealth Aluminum Corporation, announcing its entry into an Agreement and Plan of Merger with CasTech Aluminum Group Inc.