Stock Trading History of Sheffield Scott D

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 Sheffield Scott D since year 2005. The trader's CIK number is 1034316. At the time of this reporting, Sheffield Scott D is the Chairman of the Board and CEO of Pioneer Natural Resources Co . (stock ticker symbol PXD). See this page for all insider trading activities at Pioneer Natural Resources Co .
Note that in the past SHEFFIELD SCOTT D also reported insider trading activities as an insider of the following companies:

Insider Activities at Pioneer Natural Resources Co (PXD)
Insider Activities at Pioneer Southwest Energy Partners L.p. (PSE)

Stock purchases, sales, and option exercises reported by insider *Sheffield Scott D* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-06-24	PXD	Pioneer Natural Resources Co	Sale	5,646	78.96	445,833
2008-06-26	PXD	Pioneer Natural Resources Co	Option Exercise	10,000	24.72	247,200
2008-06-26	PXD	Pioneer Natural Resources Co	Sale	10,000	77.26	772,581
2008-06-24	PXD	Pioneer Natural Resources Co	Option Exercise	10,000	24.72	247,200
2008-05-06	PSE	Pioneer Southwest Energy Partners L.p.	Purchase	12,000	19.00	228,000
2007-11-08	PXD	Pioneer Natural Resources Co	Option Exercise	20,000	18.96	379,200
2007-11-08	PXD	Pioneer Natural Resources Co	Sale	20,000	53.91	1,078,280
2007-08-24	PXD	Pioneer Natural Resources Co	Option Exercise	30,000	18.30	549,000
2007-08-24	PXD	Pioneer Natural Resources Co	Sale	13,333	41.28	550,319
2007-05-08	PXD	Pioneer Natural Resources Co	Option Exercise	8,000	17.69	141,520
2007-05-08	PXD	Pioneer Natural Resources Co	Sale	8,000	49.50	396,000
2007-05-07	PXD	Pioneer Natural Resources Co	Option Exercise	18,000	17.69	318,420
2007-05-07	PXD	Pioneer Natural Resources Co	Sale	18,000	49.44	889,920

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 Sheffield Scott D (Chairman of the Board and CEO of Pioneer Natural Resources Co at the time of this reporting) see the Securities and Exchange Commission (SEC) website.