KAISER ALUMINUM CORP — Director's Dealing 2013

May 4, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: KAISER ALUMINUM CORP (KALU)
CIK: 0000811596
Period of Report: 2013-05-01

Reporting Person: HOCKEMA JACK A (Director, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-01	Common Stock, par value $0.01 per share	S	5000	$61.5386	Disposed	136420	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, par value $0.01 per share	25974	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Employee Stock Options (Right to Buy)	$80.01	2017-04-03	Common Stock, par value $0.01 per share (8037)	8037	Direct

Footnotes

F1: Sales made pursuant to a 10b5-1 plan adopted by the reporting person on October 29, 2012 as part of the reporting person's financial planning to diversify his stockholdings. The plan contemplates the sale of pre-determined amount of vested shares of common stock of the Registrant held by the reporting person in specified increments both at market prices and subject to designated floor prices.

F2: Represents the sale of 5,000 shares in multiple transactions, ranging from $61.03 to $63.03 per share, resulting in a weighted average sale price of $61.5386 per share. The reporting person undertakes to provide upon request by the SEC staff, the Registrant, or a security holder of the Registrant, full information regarding the number of shares sold at each separate price within the range.

F3: Stock option award granted on April 3, 2007 for 8,037 shares of common stock, with one-third of such options vested on each of the first, second and third anniversaries of the grant date.