Stock Trading History of Slone Deck

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 Slone Deck since year 2005. The trader's CIK number is 1335025. At the time of this reporting, Slone Deck is the VP Investor Rel & Public Aff of Arch Coal Inc . (stock ticker symbol ACI). See this page for all insider trading activities at Arch Coal Inc .

Stock purchases, sales, and option exercises reported by insider *Slone Deck* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-05-15	ACI	Arch Coal Inc	Option Exercise	24,700	10.45	258,197
2008-05-15	ACI	Arch Coal Inc	Sale	24,700	63.80	1,575,789
2008-02-25	ACI	Arch Coal Inc	Option Exercise	500	.00	0
2008-02-08	ACI	Arch Coal Inc	Sale	1,500	50.00	75,000
2008-02-08	ACI	Arch Coal Inc	Option Exercise	1,500	11.44	17,156
2008-02-07	ACI	Arch Coal Inc	Option Exercise	1,350	.00	0
2007-06-01	ACI	Arch Coal Inc	Sale	1,000	40.51	40,510
2007-06-01	ACI	Arch Coal Inc	Option Exercise	1,000	13.94	13,940
2007-05-04	ACI	Arch Coal Inc	Option Exercise	1,350	.00	0

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 Slone Deck (VP Investor Rel & Public Aff of Arch Coal Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.