X0306 4 2015-02-20 false 0001038357 PIONEER NATURAL RESOURCES CO PXD 0001602114 Montemayor Margaret 5205 N. O'CONNOR BLVD., SUITE 200 IRVING TX 75039 false true false false VP & CAO Common Stock 41 I 401(k) Common Stock 2015-02-20 4 F false 113 160.16 D 4994 D This Form 4 is being filed to solely to report the withholding of shares for taxes resulting from the vesting of a stock award on February 20, 2015, which was inadvertently omitted when the Form 4 was filed for the tax withholding for other awards at approximately the same time, and reflects the total number of shares that would have been beneficially owned as of February 20, 2015. The total number of shares reported as beneficially owned in subsequent Form 4s was overstated as a result. Thomas J. Murphy, Attorney-in-Fact for Margaret Montemayor 2015-06-04