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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
811596	Kaiser Aluminum Corp	KALU	Rolling Drawing & Extruding Of Nonferrous Metals (3350)	943030279

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1369009	Aluminum Kaiser Of Retirees For Veba	C/O The Bank Of New York Mellon, Trustee One Mellon Center, Room 151-1935 Pittsburgh PA 15258		No	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2010-04-05	20,616	$40.04	4,371,649	No	4	S	Direct
Common Stock	Disposition	2010-04-06	40,500	$40.28	4,331,149	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Direct

Footnotes

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.00 - $40.25, inclusive. The reporting person undertakes to provide to Kaiser Aluminum Corp., any shareholder of Kaiser Aluminum Corp., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.00 - $40.55, inclusive. The reporting person undertakes to provide to Kaiser Aluminum Corp., any shareholder of Kaiser Aluminum Corp., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (2) to this Form 4.