KAISER ALUMINUM CORPORATION 5,461,870 Shares Common Stock ($0.01 par value per Share) Underwriting AgreementUnderwriting Agreement • January 9th, 2007 • Kaiser Aluminum Corp • Primary production of aluminum • New York
Those stockholders of KAISER ALUMINUM CORPORATION, a Delaware corporation (the “Company”), identified in Schedule C annexed hereto (each, a “Selling Stockholder”), propose to sell to the underwriters named in Schedule A annexed hereto (the “Underwriters”), for whom you are acting as representatives, an aggregate of 5,461,870 shares (the “Firm Shares”) of common stock, $0.01 par value per share (the “Common Stock”), of the Company. The number of Firm Shares to be sold by each Selling Stockholder is the number of Firm Shares set forth opposite the name of such Selling Stockholder in Schedule C annexed hereto. In addition, solely for the purpose of covering over-allotments, the VEBA for Retirees of Kaiser Aluminum, a trust under the laws of the State of Pennsylvania (the “VEBA Trust”), a Selling Stockholder, proposes to grant to the Underwriters the option to purchase from such Selling Stockholder up to an additional 819,280 shares of Common Stock (the “Additional Shares”). The number of
