Base Call Option Transaction Confirmation Sample Contracts

To: Kaiser Aluminum Corporation 27422 Portola Parkway, Suite 200 Foothill Ranch, CA 92610-2831 Attention: Chief Financial Officer Telephone No.: (949) 614-1740 Facsimile No.: (949) 614-1930

Base Call Option Transaction Confirmation • March 29th, 2010 • Kaiser Aluminum Corp • Rolling drawing & extruding of nonferrous metals

• Contract Type
  Base Call Option Transaction Confirmation
• Filed
  March 29th, 2010
• Company
  Kaiser Aluminum Corp
• Industry
  Rolling drawing & extruding of nonferrous metals

The purpose of this letter agreement (this “Confirmation”) is to confirm the terms and conditions of the call option transaction entered into between [ ] (“Dealer”) and Kaiser Aluminum Corporation (“Counterparty”) as of the Trade Date specified below (the “Transaction”). This letter agreement constitutes a “Confirmation” as referred to in the ISDA Master Agreement specified below. This Confirmation shall replace any previous agreements and serve as the final documentation for this Transaction.