Stock Trading History of Moynihan Stephen

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 Moynihan Stephen since year 2005. The trader's CIK number is 1205224. At the time of this reporting, Moynihan Stephen is the Sr. VP Planning/Development of Clean Harbors Inc . (stock ticker symbol CLHB). See this page for all insider trading activities at Clean Harbors Inc .

Stock purchases, sales, and option exercises reported by insider *Moynihan Stephen* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-05-14	CLHB	Clean Harbors Inc	Sale	2,000	66.50	133,000
2008-05-14	CLHB	Clean Harbors Inc	Option Exercise	2,000	12.98	25,960
2007-11-14	CLHB	Clean Harbors Inc	Sale	18,000	55.53	999,520
2007-11-14	CLHB	Clean Harbors Inc	Option Exercise	18,000	8.36	150,570
2006-07-03	CLHB	Clean Harbors Inc	Sale	9,100	40.16	365,457
2006-06-30	CLHB	Clean Harbors Inc	Sale	20,900	40.10	838,194

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 Moynihan Stephen (Sr. VP Planning/Development of Clean Harbors Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.