Stock Trading History of Warburg Pincus Private Equity Viii L P

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 Warburg Pincus Private Equity Viii L P since year 2005. The trader's CIK number is 1157334. At the time of this reporting, Warburg Pincus Private Equity Viii L P is the Director of Allos Therapeutics Inc . (stock ticker symbol ALTH). See this page for all insider trading activities at Allos Therapeutics Inc .

Stock purchases, sales, and option exercises reported by insider *Warburg Pincus Private Equity Viii L P* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-05-29	ALTH	Allos Therapeutics Inc	Purchase	3,500,000	5.64	19,740,000

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 Warburg Pincus Private Equity Viii L P (Director of Allos Therapeutics Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.