1. Company Directors - S
2. Sexton Mark S

Insider Trading History of Sexton Mark S

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) by Sexton Mark S since 2006. The trader's CIK number is 1185281. At the time of the last reporting, Sexton Mark S was the Director of Pioneer Natural Resources Co. (stock ticker symbol PXD). Also see all insider trading activities at Pioneer Natural Resources Co.

Note that in the past SEXTON MARK S also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Kfx Inc (EEE) by Sexton Mark S

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2007	EEE	20,000	$123,390	0	$0	0	$0
2006	EEE	18,100	$191,447	0	$0	66,666	$187,864

Yearly summary of insider trading at Pioneer Natural Resources Co (PXD) by Sexton Mark S

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2008	PXD	0	$0	30,000	$1,725,000	0	$0
2007	PXD	0	$0	22,641	$1,139,355	1,871	$0
2006	PXD	0	$0	0	$0	101,586	$1,547,000

Insider trading activities at 2 companies by Sexton Mark S:

1. Kfx Inc (EEE)

2. Pioneer Natural Resources Co (PXD)

Table 1. Insider trading of Kfx Inc (EEE) by Sexton Mark S

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2007-03-30	EEE	Buy	10,000	5.73	57,340
2007-03-07	EEE	Buy	10,000	6.61	66,050
2006-09-26	EEE	Buy	800	10.69	8,552
2006-09-29	EEE	Buy	17,300	10.57	182,895
2006-03-24	KFX	Option Ex	66,666	2.82	187,864

Table 2. Insider trading of Pioneer Natural Resources Co (PXD) by Sexton Mark S

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2008-04-22	PXD	Sale	10,000	60.00	600,000
2008-04-16	PXD	Sale	10,000	57.50	575,000
2008-04-08	PXD	Sale	10,000	55.00	550,000
2007-11-06	PXD	Sale	10,000	52.50	525,000
2007-10-31	PXD	Sale	10,000	50.00	500,000
2007-05-03	PXD	Option Ex	1,871	.00	0
2005-03-04	PXD	Sale	2,641	43.30	114,355
2006-09-18	PXD	Option Ex	100,000	15.47	1,547,000
2006-05-03	PXD	Option Ex	1,586	.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 Sexton Mark S (Director of Pioneer Natural Resources Co at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

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