-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, BFpyDIzYpNjn/UuiqnVqO8mElSDCDSeqHhPi4j64o9nxhj37oudf/1F7i1QXiRG/ /WtM61mFYC/xmNYny7wSnQ== 0000807985-10-000037.txt : 20100927 0000807985-10-000037.hdr.sgml : 20100927 20100927142039 ACCESSION NUMBER: 0000807985-10-000037 CONFORMED SUBMISSION TYPE: SC 13D/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20100927 DATE AS OF CHANGE: 20100927 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: PIONEER NATURAL RESOURCES CO CENTRAL INDEX KEY: 0001038357 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] IRS NUMBER: 752702753 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13D/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-51453 FILM NUMBER: 101090596 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 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: SOUTHEASTERN ASSET MANAGEMENT INC/TN/ CENTRAL INDEX KEY: 0000807985 STANDARD INDUSTRIAL CLASSIFICATION: UNKNOWN SIC - 0000 [0000] IRS NUMBER: 620951781 STATE OF INCORPORATION: TN FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13D/A BUSINESS ADDRESS: STREET 1: 6410 POPLAR AVENUE STE 900 CITY: MEMPHIS STATE: TN ZIP: 38119 BUSINESS PHONE: 9017612474 MAIL ADDRESS: STREET 1: 6410 POPLAR AVENUE STREET 2: SUITE 900 CITY: MEMPHIS STATE: TN ZIP: 38119 FORMER COMPANY: FORMER CONFORMED NAME: PROFESSIONAL PORTFOLIO MANAGEMENT INC DATE OF NAME CHANGE: 19890314 FORMER COMPANY: FORMER CONFORMED NAME: SOUTHEASTERN ASSET MANAGEMENT INC DATE OF NAME CHANGE: 19880622 SC 13D/A 1 pxd13d4.txt PIONEER NATURAL RESOURCES COMPANY - 13D SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 Amendment No. 4 Pioneer Natural Resources Company ________________________________________________________ (Name of Issuer) Common Stock _______________________________________________________ (Title of Class and Securities) 723787107 _______________________________________________________ (CUSIP Number of Class of Securities) O. Mason Hawkins Chairman of the Board and C.E.O. and Andrew R. McCarroll Vice President & General Counsel Southeastern Asset Management, Inc. 6410 Poplar Avenue, Suite 900 Memphis, TN 38119 (901) 761-2474 ___________________________________________________________ (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) September 24, 2010 ___________________________________________ (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this Schedule because of Sections 240.13d-1(e), 240.13d-1(f), or 240.13d-1(g), check the following box: [X] CUSIP No. 723787107 13D _____________________________________________________________________________ (1) NAMES OF REPORTING PERSONS Southeastern Asset Management, Inc. I.D. No. 62-0951781 _____________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) (b) X _____________________________________________________________________________ (3) SEC USE ONLY _____________________________________________________________________________ (4) SOURCE OF FUNDS 00: Funds of investment advisory clients _____________________________________________________________________________ (5) CHECK BOX IF DISCOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] _____________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Tennessee _____________________________________________________________________________ :(7) SOLE VOTING POWER : (Discretionary Accounts) NUMBER OF SHARES BENEFICIALLY : 4,718,791 shares OWNED BY EACH REPORTING PERSON __________________________________________ WITH :(8) SHARED OR NO VOTING POWER : 9,478,900 shares (Shared) : 1,451,800 shares (No Vote) __________________________________________ :(9) SOLE DISPOSITIVE POWER (Discretionary Accounts) : 6,170,591 shares __________________________________________ :(10) SHARED DISPOSITIVE POWER : 9,478,900 shares (Shared) : 0 shares (None) _____________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 15,649,491 shares _____________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES _____________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 13.5 % _____________________________________________________________________________ (14) TYPE OF REPORTING PERSON IA _____________________________________________________________________________ CUSIP No. 723787107 13D _____________________________________________________________________________ (1) NAMES OF REPORTING PERSONS Longleaf Partners Fund I.D. No. 63-6147721 _____________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) (b) X _____________________________________________________________________________ (3) SEC USE ONLY _____________________________________________________________________________ (4) SOURCE OF FUNDS 00: Funds of investment company shareholders _____________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEDDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 29e) [ ] _____________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Massachusetts _____________________________________________________________________________ :(7) SOLE VOTING POWER NUMBER OF SHARES BENEFICIALLY : None OWNED BY EACH REPORTING PERSON __________________________________________ WITH :(8) SHARED VOTING POWER : 7,133,900 shares (Shared) __________________________________________ :(9) SOLE DISPOSITIVE POWER : None __________________________________________ :(10) SHARED DISPOSITIVE POWER : 7,133,900 shares (Shared) _____________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 7,133,900 shares _____________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES _____________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 6.2 % _____________________________________________________________________________ (14) TYPE OF REPORTING PERSON IV _____________________________________________________________________________ CUSIP No. 723787107 13D _____________________________________________________________________________ (1) NAMES OF REPORTING PERSONS O. Mason Hawkins I.D. No. XXX-XX-XXXX _____________________________________________________________________________ (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP: (a) (b) X _____________________________________________________________________________ (3) SEC USE ONLY _____________________________________________________________________________ (4) SOURCE OF FUNDS 00: None _____________________________________________________________________________ (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] _____________________________________________________________________________ (6) CITIZENSHIP OR PLACE OF ORGANIZATION Citizen of United States _____________________________________________________________________________ :(7) SOLE VOTING POWER : (Discretionary Accounts) NUMBER OF SHARES BENEFICIALLY : None OWNED BY EACH REPORTING PERSON __________________________________________ WITH :(8) SHARED VOTING POWER : None __________________________________________ :(9) SOLE DISPOSITIVE POWER : None __________________________________________ :(10) SHARED DISPOSITIVE POWER : None _____________________________________________________________________________ (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON None (See Item 3) _____________________________________________________________________________ (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11 EXCLUDES CERTAIN SHARES [ ] _____________________________________________________________________________ (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11 0.0 % _____________________________________________________________________________ (14) TYPE OF REPORTING PERSON IN _____________________________________________________________________________ Item 5. Interest In Securities Of The Issuer Item 5 shall be amended and restated as follows: (a) The aggregate number and percentage of Securities to which this Schedule 13D relates is 15,649,491 shares of the common stock of the Issuer, constituting approximately 13.5% of the 115,994,034 shares outstanding. Common % of outstanding Shares Common Shares Held ___________________________________________________________________ Voting Authority Sole: 4,718,791 4.1% Shared: 9,478,900* 8.2% None: 1,451,800 1.2% Total 15,649,491 13.5% *Consists of shares owned by Longleaf Partners Fund and Longleaf Partners Small-Cap Fund, each a series of Longleaf Partners Funds Trust, an open-end management investment company registered under the Investment Company Act of 1940. Dispositive Authority Sole: 6,170,591 5.3% Shared: 9,478,900* 8.2% None: 0 0.0% Total 15,649,491 13.5% *Consists of shares owned by Longleaf Partners Fund and Longleaf Partners Small-Cap Fund, each a series of Longleaf Partners Funds Trust, an open-end management investment company registered under the Investment Company Act of 1940. (b) Southeastern generally has the sole power to dispose of or to direct the disposition of the Securities held for discretionary accounts of its investment clients, and may be granted the sole power to vote or direct the vote of such Securities; such powers may be retained by or shared with the respective clients for shared or non-discretionary accounts. Shares held by any Series of Longleaf Partners Funds Trust are reported in the "shared" category. (c) Purchase or sale transactions in the Securities during the past sixty days are disclosed on Schedule II. (d) The investment advisory clients of Southeastern have the sole right to receive and, subject to notice, to withdraw the proceeds from the sale of the Securities, and the sole power to direct the receipt of dividends from any of the Securities held for their respective accounts. Such clients may also terminate the investment advisory agreements without penalty upon appropriate notice. Southeastern does not have an economic interest in any of the Securities reported herein. (e) Not applicable. Signatures After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: September 27, 2010 Southeastern Asset Management, Inc. By /s/ Andrew R. McCarroll _______________________________________________ Andrew R. McCarroll Vice President and General Counsel Longleaf Partners Fund By: Southeastern Asset Management, Inc. /s/ Andrew R. McCarroll _______________________________________________ Andrew R. McCarroll Vice President & General Counsel O. Mason Hawkins, Individually /s/ O. Mason Hawkins _______________________________________________ Joint Filing Agreement In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, the persons or entities named below agree to the joint filing on behalf of each of them of this Amendment No. 4 to Schedule 13D with respect to the Securities of the Issuer and further agree that this joint filing agreement be included as an exhibit to this Amendment No. 4 to Schedule 13D. In evidence thereof, the undersigned hereby execute this Agreement as of September 27, 2010. Southeastern Asset Management, Inc. By /s/ Andrew R. McCarroll _______________________________________________ Andrew R. McCarroll Vice President and General Counsel Longleaf Partners Fund By: Southeastern Asset Management, Inc. /s/ Andrew R. McCarroll _______________________________________________ Andrew R. McCarroll Vice President & General Counsel O. Mason Hawkins, Individually /s/ O. Mason Hawkins _______________________________________________ Schedule II Transactions in the Last Sixty Days Transaction Type Date # of Shares Price per Share * Sale 07/28/2010 18,600 $59.90 Sale 08/02/2010 8,000 $60.89 Sale 08/02/2010 11,000 $60.89 Sale 08/02/2010 13,000 $60.89 Sale 08/02/2010 20,000 $60.89 Sale 08/02/2010 9,000 $60.89 Sale 08/04/2010 31,000 $61.21 Sale 08/04/2010 13,000 $61.21 Sale 08/04/2010 16,000 $61.21 Sale 08/04/2010 55,000 $61.21 Sale 08/27/2010 20,000 $58.68 Sale 08/27/2010 1,000 $58.68 Sale 09/02/2010 1,700 $61.01 Sale 09/07/2010 134,000 $61.89 Sale 09/13/2010 103,200 $65.01 Sale 09/13/2010 33,800 $65.01 Sale 09/23/2010 68,000 $66.46 Sale 09/24/2010 3,000 $64.00 Sale 09/24/2010 2,000 $64.00 Sale 09/24/2010 62,000 $64.00 Sale 09/24/2010 18,000 $64.00 Sale 09/24/2010 15,000 $64.00 Sale 09/24/2010 13,000 $64.00 Sale 09/24/2010 300 $64.00 Sale 09/24/2010 700 $64.00 Sale 09/24/2010 7,000 $64.00 Sale 09/24/2010 28,000 $64.00 Sale 09/24/2010 8,800 $64.00 Sale 09/24/2010 142,200 $64.00 Sale 09/24/2010 7,000 $64.00 Sale 09/24/2010 8,000 $64.00 Sale 09/24/2010 8,000 $64.00 Sale 09/24/2010 6,000 $64.00 Sale 09/24/2010 23,000 $64.00 Sale 09/24/2010 34,000 $64.00 Sale 09/24/2010 9,000 $64.00 Sale 09/24/2010 16,000 $64.00 Sale 09/24/2010 56,000 $64.00 Sale 09/24/2010 23,000 $64.00 Sale 09/24/2010 61,000 $64.00 Sale 09/24/2010 7,000 $64.00 Sale 09/24/2010 18,000 $64.00 Sale 09/24/2010 500 $64.00 Sale 09/24/2010 4,000 $64.00 Sale 09/24/2010 100 $64.00 Sale 09/24/2010 5,000 $64.00 Sale 09/24/2010 100 $64.00 Sale 09/24/2010 1,600 $64.00 Sale 09/24/2010 2,000 $64.00 Sale 09/24/2010 1,000 $64.00 Sale 09/24/2010 1,700 $64.00 Sale 09/24/2010 15,000 $64.00 Sale 09/24/2010 113,000 $64.00 Sale 09/24/2010 109,000 $64.00 Sale 09/24/2010 7,000 $64.00 Sale 09/24/2010 1,000 $64.00 Sale 09/24/2010 9,000 $64.00 Sale 09/24/2010 2,000 $64.00 Sale 09/24/2010 42,000 $64.00 Sale 09/24/2010 5,000 $64.00 Sale 09/24/2010 6,000 $64.00 Sale 09/24/2010 2,000 $64.00 Sale 09/24/2010 10,000 $64.00 Sale 09/24/2010 19,000 $64.00 Sale 09/24/2010 11,000 $64.00 Sale 09/24/2010 21,500 $64.00 Sale 09/24/2010 18,500 $64.00 Sale 09/24/2010 7,000 $64.00 Sale 09/24/2010 4,000 $64.00 Sale 09/24/2010 6,000 $64.00 Sale 09/24/2010 5,000 $64.00 Sale 09/24/2010 3,000 $64.00 Sale 09/24/2010 18,000 $64.00 Sale 09/24/2010 13,000 $64.00 Sale 09/24/2010 16,800 $64.00 Sale 09/24/2010 32,068 $64.00 Sale 09/24/2010 50,000 $64.00 Sale 09/24/2010 10,000 $64.00 Sale 09/24/2010 884,000 $64.00 Sale 09/24/2010 4,800 $64.00 Sale 09/24/2010 27,600 $64.00 Sale 09/24/2010 340,000 $64.00 Sale 09/24/2010 158,732 $64.00 Sale 09/24/2010 134,000 $64.00 Sale 09/24/2010 227,700 $64.00 Sale 09/24/2010 4,000 $64.00 Sale 09/24/2010 32,000 $64.00 Sale 09/24/2010 14,700 $64.00 Sale 09/24/2010 21,600 $64.00 Sale 09/24/2010 80,900 $64.00 Sale 09/24/2010 100,000 $64.00 Sale 09/24/2010 24,400 $64.00 Sale 09/24/2010 232,300 $64.00 Sale 09/24/2010 4,000 $64.00 Sale 09/24/2010 214,400 $64.00 Sale 09/24/2010 1,000 $64.00 Sale 09/24/2010 12,000 $64.00 Sale 09/24/2010 22,000 $64.00 Sale 09/24/2010 18,000 $64.00 Sale 09/24/2010 1,000 $64.00 Sale 09/24/2010 35,000 $64.00 Sale 09/24/2010 3,000 $64.00 Sale 09/24/2010 4,000 $64.00 Sale 09/24/2010 11,000 $64.00 Sale 09/24/2010 15,000 $64.00 Sale 09/24/2010 14,000 $64.00 Sale 09/24/2010 3,000 $64.00 Sale 09/24/2010 7,000 $64.00 Sale 09/24/2010 6,000 $64.00 Sale 09/24/2010 10,000 $64.00 Sale 09/24/2010 4,000 $64.00 Sale 09/24/2010 3,000 $64.00 Sale 09/24/2010 1,000 $64.00 Sale 09/24/2010 23,000 $64.00 Sale 09/24/2010 3,000 $64.00 Sale 09/24/2010 1,000 $64.00 Sale 09/24/2010 28,000 $64.00 Sale 09/24/2010 4,000 $64.00 Sale 09/24/2010 1,000 $64.00 Sale 09/24/2010 3,000 $64.00 Sale 09/24/2010 3,000 $64.00 Sale 09/24/2010 23,000 $64.00 Sale 09/24/2010 6,000 $64.00 Sale 09/24/2010 1,200 $64.00 Sale 09/24/2010 3,800 $64.00 Sale 09/24/2010 5,000 $64.00 Sale 09/24/2010 37,000 $64.00 Sale 09/24/2010 18,000 $64.00 Sale 09/24/2010 2,000 $64.00 Sale 09/24/2010 4,000 $64.00 Sale 09/24/2010 7,500 $64.00 Sale 09/24/2010 2,000 $64.00 Sale 09/24/2010 1,000 $64.00 Sale 09/24/2010 4,500 $64.00 Sales by Southeastern's clients were made in the ordinary course of business through brokers and were primarily a result of the need to rebalance portfolios following an increase in the Issuer's stock price. Sales as a result of this rebalancing are now complete. While facts and circumstances may change, and Southeastern retains flexibility to make additional purchases and/or sales, no further sales are anticipated at this time. In addition to the above transactions, on September 7, 2010, clients of Southeastern terminating their advisory relationship removed 80,000 shares from Southeastern's discretion. * Net of commissions 1 SCHEDULE 13D - Pioneer Natural Resources Company ("Issuer") 2 -----END PRIVACY-ENHANCED MESSAGE-----