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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1038357	Pioneer Natural Resources Co	PXD	Crude Petroleum & Natural Gas (1311)	752702753

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1034316	D Scott Sheffield	5205 N. O'Connor Blvd., Suite 200 Irving TX 75039	Chairman & Ceo	No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Disposition	2011-02-12	14,026	$96.40	646,261	No	4	F	Direct
Common Stock	Disposition	2011-02-14	400	$98.42	645,861	No	4	S	Direct
Common Stock	Disposition	2011-02-14	200	$98.42	645,661	No	4	S	Direct
Common Stock	Disposition	2011-02-14	300	$98.43	645,361	No	4	S	Direct
Common Stock	Disposition	2011-02-14	100	$98.45	645,261	No	4	S	Direct
Common Stock	Disposition	2011-02-14	200	$98.46	645,061	No	4	S	Direct
Common Stock	Disposition	2011-02-14	200	$98.47	644,861	No	4	S	Direct
Common Stock	Disposition	2011-02-14	400	$98.48	644,461	No	4	S	Direct
Common Stock	Disposition	2011-02-14	100	$98.49	644,361	No	4	S	Direct
Common Stock	Disposition	2011-02-14	200	$98.50	644,161	No	4	S	Direct
Common Stock	Disposition	2011-02-14	100	$98.52	644,061	No	4	S	Direct
Common Stock	Disposition	2011-02-14	200	$98.52	643,861	No	4	S	Direct
Common Stock	Disposition	2011-02-14	200	$98.52	643,661	No	4	S	Direct
Common Stock	Disposition	2011-02-14	300	$98.53	643,361	No	4	S	Direct
Common Stock	Disposition	2011-02-14	500	$98.53	642,861	No	4	S	Direct
Common Stock	Disposition	2011-02-14	100	$98.54	642,761	No	4	S	Direct
Common Stock	Disposition	2011-02-14	600	$98.55	642,161	No	4	S	Direct
Common Stock	Disposition	2011-02-14	200	$98.56	641,961	No	4	S	Direct
Common Stock	Disposition	2011-02-14	200	$98.56	641,761	No	4	S	Direct
Common Stock	Disposition	2011-02-14	457	$98.57	641,304	No	4	S	Direct
Common Stock	Disposition	2011-02-14	100	$98.58	641,204	No	4	S	Direct
Common Stock	Disposition	2011-02-14	400	$98.59	640,804	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	F	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	22,086	Indirect	401(k)

Footnotes

Consists of shares beneficially owned as a result of reporting person's ownership of units in the Pioneer Natural Resources USA, Inc. 401(k) Plan