ࡱ>  l \pThe Free Software Foundation B=PF0*8X@"1 Helvetica1Courier1 Courier New1 Courier New1 Helvetica$#,##0_);($#,##0)$#,##0_);[Red]($#,##0)$#,##0.00_);($#,##0.00)$#,##0.00_);[Red]($#,##0.00)-**_($* #,##0_);_($* (#,##0);_($* "-"_);_(@_)*)'_(* #,##0_);_(* (#,##0);_(* "-"_);_(@_)5,2_($* #,##0.00_);_($* (#,##0.00);_($* "-"??_);_(@_)2+/_(* #,##0.00_);_(* (#,##0.00);_(* "-"??_);_(@_)2$#,##0.00;[Red]$#,##0.003$#,##0.00;[Red]($#,##0.00)4$#,##0;[Red]($#,##00)50.00%;[Red](0.00%)6 0%;[Red](0%)7#,##0.00;[Red](#,##0.00)8#,##0;[Red](#,##0)                + ) , *   Ј ~~ ؈ ~~#؈ ~~"؈ ~~ ؈ ~~7#܈ ~~8#܈ ~~83ffff̙̙3f3fff3f3f33333f33 NO TITLEF COMMON STOCKCOMMON STOCK (1)a#COMMON STOCK (2)9-COMMON STOCK (3)6COMMON STOCK (4) @ l   dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLECOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $ } } m     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK [_]Rule 13d-1(b)     [X] Rule 13d-1(c)     [_] Rule 13d-1(d)$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/*h}q=i]Q)=PF0*8X> @ l  " dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} $4     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ #Names of Reporting Persons. 3 +I.R.S. Identification Nos. of above persons  (entities only).    SPO Partners II, L.P.~  0(Check the Appropriate Box if a Member of"a Group (See Instructions)(a) [_](b) [X]~  SEC Use Only~ ,$Citizenship or Place of OrganizationDelaware$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/@#D}q @ l  , dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } m} $}      SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK Number of~ Sole Voting Power Shares    Beneficially  7,509,239 (1) Owned by Each  Reporting~  Shared Voting Power Person With:~ ~ Sole Dispositive Power7,509,239 (1)~ " Shared Dispositive Power~ $____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/8}q1o?J&=PF0*8X> @ l  ]6 dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} 7     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ &.&Aggregate Amount Beneficially Owned by  Each Reporting Person   ~ S~ *0 (Check if the Aggregate Amount in Row (9)6.Excludes Certain Shares (See Instructions) [_]~ ..&Percent of Class Represented by Amount in Row (9) 6.1%~ 23+Type of Reporting Person (See Instructions) (PN)$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/:}q1J2W?# =PF0*8X> @ l  @ dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} $4     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ #Names of Reporting Persons. 3 +I.R.S. Identification Nos. of above persons  (entities only).   # SPO Advisory Partners, L.P.~  0(Check the Appropriate Box if a Member of"a Group (See Instructions)(a) [_](b) [X]~  SEC Use Only~ ,$Citizenship or Place of OrganizationDelaware$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/@)D}q @ l  J dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } m} $}      SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK Number of~ Sole Voting Power Shares    Beneficially  7,509,239 (1)(2) Owned by Each    Reporting~  Shared Voting Power Person With:~ ~ Sole Dispositive Power7,509,239 (1)(2)~ " Shared Dispositive Power~ $____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/8}q1T$j,=PF0*8X> @ l  T dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} 7     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ &.&Aggregate Amount Beneficially Owned by  Each Reporting Person   ~ S  ~ *0(Check if the Aggregate Amount in Row (9)6.Excludes Certain Shares (See Instructions) [_]~ ..&Percent of Class Represented by Amount in Row (9) 6.1%~ 23+Type of Reporting Person (See Instructions) (PN)$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/<}q1x2?' =PF0*8X> @ l  ^ dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} $4     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ #Names of Reporting Persons. 3 +I.R.S. Identification Nos. of above persons  (entities only).   $ San Francisco Partners, L.P.~  0(Check the Appropriate Box if a Member of"a Group (See Instructions)(a) [_](b) [X]~  SEC Use Only~ ,$Citizenship or Place of Organization California$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/@,D}q @ l  h dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } m} $}      SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK Number of~ Sole Voting Power Shares    Beneficially   293,750 (1) Owned by Each    Reporting~  Shared Voting Power Person With:~ ~ Sole Dispositive Power 293,750 (1)~ " Shared Dispositive Power~ $____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/8}q1Y)t6=PF0*8X> @ l  vr dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} 7     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ &.&Aggregate Amount Beneficially Owned by  Each Reporting Person   ~ ~ *0 (Check if the Aggregate Amount in Row (9)6.Excludes Certain Shares (See Instructions) [_]~ ..&Percent of Class Represented by Amount in Row (9) 0.2%~ 23+Type of Reporting Person (See Instructions) (PN)$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/:}q1J2W?# =PF0*8X> @ l  | dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} $4     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ #Names of Reporting Persons. 3 +I.R.S. Identification Nos. of above persons  (entities only).   " SF Advisory Partners, L.P.~  0(Check the Appropriate Box if a Member of"a Group (See Instructions)(a) [_](b) [X]~  SEC Use Only~ ,$Citizenship or Place of OrganizationDelaware$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/@(D}q @ l   dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } m} $}      SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK Number of~ Sole Voting Power Shares    Beneficially  293,750 (1)(2) Owned by Each  Reporting~  Shared Voting Power Person With:~ ~ Sole Dispositive Power293,750 (1)(2)~ " Shared Dispositive Power~ $____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/8}q1n>H$=PF0*8X> @ l  O dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} 7     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ &.&Aggregate Amount Beneficially Owned by  Each Reporting Person   ~ ~ *0 (Check if the Aggregate Amount in Row (9)6.Excludes Certain Shares (See Instructions) [_]~ ..&Percent of Class Represented by Amount in Row (9) 0.2%~ 23+Type of Reporting Person (See Instructions) (PN)$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/:}q1J2W?# =PF0*8X> @ l   dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} $4     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ #Names of Reporting Persons. 3 +I.R.S. Identification Nos. of above persons  (entities only).    SPO Advisory Corp.~  0(Check the Appropriate Box if a Member of"a Group (See Instructions)(a) [_](b) [X]~  SEC Use Only~ ,$Citizenship or Place of OrganizationDelaware$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/@ D}q @ l  l dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } m} $}      SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK Number of~ Sole Voting Power Shares    Beneficially  7,802,989 (1)(2) Owned by Each  Reporting~  Shared Voting Power Person With:~ ~ Sole Dispositive Power7,802,989 (1)(2)~ " Shared Dispositive Power~ $____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/8}q1l<D =PF0*8X> @ l  $ dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} 7     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ &.&Aggregate Amount Beneficially Owned by  Each Reporting Person   ~ A~ *0 (Check if the Aggregate Amount in Row (9)6.Excludes Certain Shares (See Instructions) [_]~ ..&Percent of Class Represented by Amount in Row (9) 6.3%~ 23+Type of Reporting Person (See Instructions) (CO)$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/:}q1J2W?# =PF0*8X> @ l  S dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} $4     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ #Names of Reporting Persons. 3 +I.R.S. Identification Nos. of above persons  (entities only).    John H. Scully~  0(Check the Appropriate Box if a Member of"a Group (See Instructions)(a) [_](b) [X]~  SEC Use Only~ ,$Citizenship or Place of Organization USA$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/@D}q<{9s[=PF0*8X> @ l  @ dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } m} $}      SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK Number of~ Sole Voting Power Shares    Beneficially   6,200 (1) Owned by Each  Reporting~  Shared Voting Power Person With:7,802,989 (2)~ Sole Dispositive Power 6,200 (1)~ " Shared Dispositive Power7,802,989 (2)$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/8}q1sCG#=PF0*8X> @ l   dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} 7     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ &.&Aggregate Amount Beneficially Owned by  Each Reporting Person   ~ ~ *0 (Check if the Aggregate Amount in Row (9)6.Excludes Certain Shares (See Instructions) [_]~ ..&Percent of Class Represented by Amount in Row (9) 6.3%~ 23+Type of Reporting Person (See Instructions) (IN)$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/:}q1J2W?# =PF0*8X> @ l  , dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} $4     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ #Names of Reporting Persons. 3 +I.R.S. Identification Nos. of above persons  (entities only).    Edward H. McDermott~  0(Check the Appropriate Box if a Member of"a Group (See Instructions)(a) [_](b) [X]~  SEC Use Only~ ,$Citizenship or Place of Organization USA$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/@D}q @ l   dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } m} $}      SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK Number of~ Sole Voting Power Shares    Beneficially  900 (1) Owned by Each  Reporting~  Shared Voting Power Person With:7,802,989 (2)~ Sole Dispositive Power900 (1)~ " Shared Dispositive Power7,802,989 (2)$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/8}q1uEK'=PF0*8X> @ l   dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $} 7     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK~ &.&Aggregate Amount Beneficially Owned by  Each Reporting Person   ~ O~ *0 (Check if the Aggregate Amount in Row (9)6.Excludes Certain Shares (See Instructions) [_]~ ..&Percent of Class Represented by Amount in Row (9) 6.3%~ 23+Type of Reporting Person (See Instructions) (IN)$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/:}q1J2W?# =PF0*8X> @ l   dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $ } } a/     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK (a)Name of Issuer     ) !Pioneer Natural Resources Company     (b)/ 'Address of Issuer?s Principal ExecutiveOffices)!5205 N. O?Connor Blvd., Suite 200Irving, Texas 75039$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/0}q<a6~V=PF0*8X> @ l   dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (24) SIGNATUREEXHIBIT INDEX EXHIBIT AU } $ } } 6     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK0(The principal business address of JHS is  5 -591 Redwood Highway, Suite 3215, Mill Valley,  1 )California 94941. JHS is a citizen of the  ! United States of America.   0(The principal business address of EHM is5-591 Redwood Highway, Suite 3215, Mill Valley,1)California 94941. EHM is a citizen of the!United States of America. (d)$Title of Class of Securities0(Common Stock, par value $0.01 per share. (e)CUSIP Number:A$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/BX}q%J& @ l  D dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23) SIGNATUREEXHIBIT INDEX EXHIBIT AU } I"} $ } U} $} $ } y}  $ } y} $ } y} $ } y} $ } y} $     SPO ADVISORY CORPSC 13G/A 02/14/2013 COMMON STOCK (b) (a)  (c)(i) (c)(ii)(c)(iii)(c)(iv)         Common Shares          Voting Power   Disposition Power  Reporting Persons  Percent of Class   Beneficially Owned   Sole   Shared   Sole   Shared  SPO Partners II, L.P.   ffffff@ %  ~ S   ~ S   ~    ~ S   ~  #SPO Advisory Partners, L.P.ffffff@ %~ S  ~ S ~ ~ S~ $San Francisco Partners, L.P.? %~   ~   ~ ~ ~ "SF Advisory Partners, L.P.? %~   ~   ~ ~ ~ SPO Advisory Corp.333333@ %~ A  ~  A ~ ~ A~ John H. Scully333333@ %~   ~  ` ~ A~ `~ AEdward H. McDermott333333@ %~ O  ~   ~ A~ ~ A$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/4}qk9d e=PF0*8X> @          l  % dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24)EXHIBIT INDEX EXHIBIT AU } $ } $4 %    SPO ADVISORY CORPSC 13G/A 02/14/2013 SIGNATUREFebruary 14, 2013  Date      /s/ Kim M. Silva Signature Kim M. SilvaAttorney-in-fact for:!SPO Partners II, L.P. (1)'SPO Advisory Partners, L.P. (1)( San Francisco Partners, L.P. (1)&SF Advisory Partners, L.P. (1)SPO Advisory Corp. (1)John H. Scully (1)Edward H. McDermott (1)/'(1) A Power of Attorney authorizing Kim3+M. Silva to act on behalf of this person or%entity is filed as Exhibit B.DltK/bJe/Q !"#$ !$"____________________________1#)Created by Morningstar Document Research.0$(http://documentresearch.morningstar.com/P=PF0*8X> @$$##"" l  [' dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATURE EXHIBIT AU } I } +     SPO ADVISORY CORPSC 13G/A 02/14/2013EXHIBIT INDEXExhibitDocument Description   A+ #Agreement Pursuant to Rule 13d-1(k)   B, $Power of Attorney (Previously filed)$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/(}T|p=%|T=PF0*8X> @ l  '13 dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/?? NO TITLE COMMON STOCKCOMMON STOCK (1)COMMON STOCK (2)COMMON STOCK (3)COMMON STOCK (4)COMMON STOCK (5)COMMON STOCK (6)COMMON STOCK (7)COMMON STOCK (8)COMMON STOCK (9)COMMON STOCK (10)COMMON STOCK (11)COMMON STOCK (12)COMMON STOCK (13)COMMON STOCK (14)COMMON STOCK (15)COMMON STOCK (16)COMMON STOCK (17)COMMON STOCK (18)COMMON STOCK (19)COMMON STOCK (20)COMMON STOCK (21)COMMON STOCK (22)COMMON STOCK (23)COMMON STOCK (24) SIGNATUREEXHIBIT INDEXU } $ } $4 '    SPO ADVISORY CORPSC 13G/A 02/14/2013 EXHIBIT AFebruary 14, 2013  Date     /s/ Kim M. Silva Signature Kim M. SilvaAttorney-in-fact for:!SPO Partners II, L.P. (1)'SPO Advisory Partners, L.P. (1)( San Francisco Partners, L.P. (1)&SF Advisory Partners, L.P. (1)SPO Advisory Corp. (1)John H. Scully (1)Edward H. McDermott (1)/'(1) A Power of Attorney authorizing Kim3+M. Silva to act on behalf of this person orDltK/# nJ2Mx !"#$%& 1 )entity has been previously filed with the!'!Securities Exchange Commission."#$$____________________________1%)Created by Morningstar Document Research.0&(http://documentresearch.morningstar.com/x|pH=PF0*8X> @&&%%$$ Root Entry FBook  [4  !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~