Stock Trading History of Kleinfeld Klaus

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Kleinfeld Klaus since year 2005. The trader's CIK number is 1268014. At the time of this reporting, Kleinfeld Klaus is the Director of Alcoa Inc (stock ticker symbol AA).

Stock purchases, sales, and option exercises reported by *Kleinfeld Klaus* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-07-17	AA	Alcoa Inc	Purchase	1,118	46.75	52,266
2007-01-23	AA	Alcoa Inc	Purchase	792	31.45	24,908
2006-12-13	AA	Alcoa Inc	Purchase	874	30.34	26,517
2006-07-14	AA	Alcoa Inc	Purchase	860	30.99	26,651
2006-04-12	AA	Alcoa Inc	Purchase	720	34.08	24,537
2006-01-17	AA	Alcoa Inc	Purchase	550	29.25	16,087
2005-10-12	AA	Alcoa Inc	Purchase	1,391	23.15	32,201
2005-04-18	AA	Alcoa Inc	Purchase	540	29.61	15,989

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Kleinfeld Klaus (Director of Alcoa Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.