0001209191-11-062181.txt : 20111219 0001209191-11-062181.hdr.sgml : 20111219 20111219184739 ACCESSION NUMBER: 0001209191-11-062181 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20111216 FILED AS OF DATE: 20111219 DATE AS OF CHANGE: 20111219 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Pioneer Southwest Energy Partners L.P. CENTRAL INDEX KEY: 0001407463 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] IRS NUMBER: 260388421 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 5205 N. O'CONNOR BLVD., SUITE 200 CITY: IRVING STATE: TX ZIP: 75039 BUSINESS PHONE: (972) 444-9001 MAIL ADDRESS: STREET 1: 5205 N. O'CONNOR BLVD., SUITE 200 CITY: IRVING STATE: TX ZIP: 75039 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: PIONEER NATURAL RESOURCES USA INC CENTRAL INDEX KEY: 0000846920 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-34032 FILM NUMBER: 111270348 BUSINESS ADDRESS: STREET 1: 5205 NORTH O CONNOR BOULEVARD STREET 2: 1400 WILLIAMS SQUARE WEST CITY: IRVING STATE: TX ZIP: 75039 BUSINESS PHONE: 9156834768 MAIL ADDRESS: STREET 1: 5205 NORTH OCONNOR BOULEVARD STREET 2: 1400 WILLIAMS SQUARE WEST CITY: IRVING STATE: TX ZIP: 75039 FORMER NAME: FORMER CONFORMED NAME: MESA OPERATING CO DATE OF NAME CHANGE: 19940113 FORMER NAME: FORMER CONFORMED NAME: MESA OPERATING LIMITED PARNERSHIP DATE OF NAME CHANGE: 19940113 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: PIONEER NATURAL RESOURCES CO CENTRAL INDEX KEY: 0001038357 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-34032 FILM NUMBER: 111270349 BUSINESS ADDRESS: STREET 1: 200 WILLIAMS SQUARE WEST STREET 2: 5205 N OCONNOR BLVD CITY: IRVING STATE: TX ZIP: 75039 BUSINESS PHONE: 9724449001 MAIL ADDRESS: STREET 1: 200 WILLIAMS SQUARE WEST STREET 2: 5205 N OCONNOR BLVD CITY: IRVING STATE: TX ZIP: 75039 4 1 c26034_4x0.xml MAIN DOCUMENT DESCRIPTION X0304 4 2011-12-16 0001407463 Pioneer Southwest Energy Partners L.P. PSE 0001038357 PIONEER NATURAL RESOURCES CO 5205 N. O'CONNOR BLVD. SUITE 200 IRVING TX 75039 0 0 1 1 Indirect Owner of Gen. Partner 0000846920 PIONEER NATURAL RESOURCES USA INC 5205 N. O'CONNOR BLVD. SUITE 200 IRVING TX 75039 0 0 1 1 Owner of General Partner Common Units 2011-12-16 2011-12-16 4 S 0 1800000 28.04 D 18721200 I See Footnote The securities reported on this Form 4 are held directly by Pioneer Natural Resources USA, Inc. ("Pioneer USA"). Pioneer USA is a wholly-owned subsidiary of Pioneer Natural Resources Company ("Pioneer"). Pioneer is an indirect beneficial owner of the reported securities. Pioneer USA is also a direct owner of the general partner of the Issuer. Mark H. Kleinman, Vice President 2011-12-16 Mark H. Kleinman, Vice President 2011-12-16