Stock Trading History of Khosla Chaitan Phd

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 Khosla Chaitan Phd since year 2005. The trader's CIK number is 1135139. At the time of this reporting, Khosla Chaitan Phd is the Director of Kosan Biosciences Inc (stock ticker symbol KOSN).

Stock purchases, sales, and option exercises reported by *Khosla Chaitan Phd* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-03-26	KOSN	Kosan Biosciences Inc	Sale	50,000	5.26	263,065
2006-04-18	KOSN	Kosan Biosciences Inc	Sale	3,200	5.40	17,296
2006-04-17	KOSN	Kosan Biosciences Inc	Sale	3,200	5.71	18,286
2006-03-14	KOSN	Kosan Biosciences Inc	Sale	3,200	5.92	18,955
2006-03-15	KOSN	Kosan Biosciences Inc	Sale	3,200	5.93	18,973
2006-02-09	KOSN	Kosan Biosciences Inc	Sale	792	5.00	3,963
2006-02-08	KOSN	Kosan Biosciences Inc	Sale	3,200	5.00	16,000

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 Khosla Chaitan Phd (Director of Kosan Biosciences Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.