Stock Trading History of Nielsen Robert R

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 Nielsen Robert R since year 2005. The trader's CIK number is 1360998. At the time of this reporting, Nielsen Robert R is the Executive Vice President of Century Aluminum Co . (stock ticker symbol CENX). See this page for all insider trading activities at Century Aluminum Co .

Stock purchases, sales, and option exercises reported by insider *Nielsen Robert R* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-02-27	CENX	Century Aluminum Co	Sale	16,665	68.14	1,135,553
2008-02-27	CENX	Century Aluminum Co	Option Exercise	16,665	47.61	793,420
2007-09-13	CENX	Century Aluminum Co	Sale	3,699	45.45	168,119

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 Nielsen Robert R (Executive Vice President of Century Aluminum Co at the time of this reporting) see the Securities and Exchange Commission (SEC) website.