Stock Trading History of Harris Timothy David

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 Harris Timothy David since year 2005. The trader's CIK number is 1340094. At the time of this reporting, Harris Timothy David is the CEO of Komag Inc /de/ (stock ticker symbol KOMG).

Stock purchases, sales, and option exercises reported by *Harris Timothy David* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-03-08	KOMG	Komag Inc /de/	Sale	1,928	32.06	61,820
2007-02-28	KOMG	Komag Inc /de/	Option Exercise	15,576	.01	155
2007-02-22	KOMG	Komag Inc /de/	Sale	1,928	32.65	62,951
2007-02-05	KOMG	Komag Inc /de/	Sale	4,284	33.67	144,233
2006-12-06	KOMG	Komag Inc /de/	Sale	4,285	39.71	170,147
2006-11-06	KOMG	Komag Inc /de/	Sale	4,284	37.99	162,743
2006-08-16	KOMG	Komag Inc /de/	Option Exercise	50,000	.01	500
2006-03-06	KOMG	Komag Inc /de/	Option Exercise	18,000	.01	180

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 Harris Timothy David (CEO of Komag Inc /de/ at the time of this reporting) see the Securities and Exchange Commission (SEC) website.