X0306 4 2013-12-17 false 0001038357 PIONEER NATURAL RESOURCES CO PXD 0001436029 Hall Frank W. 5205 N. O'CONNOR BLVD., SUITE 200 IRVING TX 75039 false true false false VP & CAO Common Stock 2013-12-17 4 A false 1860 0 A 18621 D On December 17, 2013, Pioneer Southwest Energy Partners L.P. (PSE) merged with a subsidiary of the Issuer and each publicly held common unit of PSE was converted into the right to receive 0.2325 of a share of Issuer common stock. Pursuant to the merger, the 8,000 PSE common units held by the reporting person were converted into the right to receive 1,860 shares of PXD common stock. On December 17, 2013, the closing price of PSE common units was $42.50, and the closing price of shares of common stock of the Issuer was $182.43. Mark H. Kleinman, Attorney-in-Fact For Frank W. Hall 2013-12-18