Stock Trading History of Johnson William S

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 Johnson William S since year 2005. The trader's CIK number is 1223693. At the time of this reporting, Johnson William S is the Vice President, CFO of Cabot Microelectronics Corp . (stock ticker symbol CCMP). See this page for all insider trading activities at Cabot Microelectronics Corp .

Stock purchases, sales, and option exercises reported by insider *Johnson William S* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-08-07	CCMP	Cabot Microelectronics Corp	Option Exercise	15,000	30.51	457,650
2008-08-07	CCMP	Cabot Microelectronics Corp	Sale	15,000	40.61	609,150
2007-12-26	CCMP	Cabot Microelectronics Corp	Sale	97	37.87	3,673
2007-12-05	CCMP	Cabot Microelectronics Corp	Sale	643	37.00	23,791
2007-08-08	CCMP	Cabot Microelectronics Corp	Option Exercise	1,500	30.51	45,765
2007-08-08	CCMP	Cabot Microelectronics Corp	Sale	1,500	43.42	65,137
2007-08-08	CCMP	Cabot Microelectronics Corp	Option Exercise	8,341	30.51	254,483
2007-08-08	CCMP	Cabot Microelectronics Corp	Sale	8,341	43.65	364,108
2007-08-08	CCMP	Cabot Microelectronics Corp	Option Exercise	5,159	30.51	157,401
2007-08-08	CCMP	Cabot Microelectronics Corp	Sale	5,159	44.02	227,105
2006-12-27	CCMP	Cabot Microelectronics Corp	Sale	63	34.28	2,159

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 Johnson William S (Vice President, CFO of Cabot Microelectronics Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.