WES

SEC source: 0001423902-23-000006 · wf-form4_167642074875189.xml · derivative · entry 8

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,982

Underlying: Common Units representing limited partner interests · 41,981 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, entitled to receive a common unit

F4 · derivative.exercise_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

F4 · derivative.expiration_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

SEC source: 0001423902-23-000006 · wf-form4_167642074875189.xml · derivative · entry 7

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 52,018 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in the form of WES Common Units on a current basis.

F2 · derivative.expiration_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in the form of WES Common Units on a current basis.

SEC source: 0001423902-23-000006 · wf-form4_167642074875189.xml · nonDerivative · entry 6

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 201,529

SEC source: 0001423902-23-000006 · wf-form4_167642074875189.xml · nonDerivative · entry 5

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 212,902

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001423902-23-000006 · wf-form4_167642074875189.xml · nonDerivative · entry 4

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 184,000

SEC source: 0001423902-23-000006 · wf-form4_167642074875189.xml · nonDerivative · entry 3

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,520

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001423902-23-000006 · wf-form4_167642074875189.xml · nonDerivative · entry 2

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,539

SEC source: 0001423902-23-000006 · wf-form4_167642074875189.xml · nonDerivative · entry 1

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 179,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001423902-23-000003 · wf-form4_167642036294145.xml · derivative · entry 2

Owen Kenneth F. · CIK 0001523426 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 5,588 shares

Expires 2023-02-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

SEC source: 0001423902-23-000003 · wf-form4_167642036294145.xml · nonDerivative · entry 1

Owen Kenneth F. · CIK 0001523426 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,642

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001423902-23-000002 · wf-form4_167642017347447.xml · derivative · entry 2

Brown Oscar K · CIK 0001715126 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 5,588 shares

Expires 2023-02-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

SEC source: 0001423902-23-000002 · wf-form4_167642017347447.xml · nonDerivative · entry 1

Brown Oscar K · CIK 0001715126 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,703

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001423902-23-000005 · wf-form4_167642059161091.xml · derivative · entry 2

STEWART LISA A · CIK 0001244213 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 5,588 shares

Expires 2023-02-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

SEC source: 0001423902-23-000005 · wf-form4_167642059161091.xml · nonDerivative · entry 1

STEWART LISA A · CIK 0001244213 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,642

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001423902-22-000045 · wf-form4_166863621854152.xml · nonDerivative · entry 2

Dial Christopher B. · CIK 0001729009 · SVP, GC and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,936

SEC source: 0001423902-22-000045 · wf-form4_166863621854152.xml · nonDerivative · entry 1

Dial Christopher B. · CIK 0001729009 · SVP, GC and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,147

SEC source: 0001423902-22-000043 · wf-form4_166863610532817.xml · nonDerivative · entry 2

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 126,982

SEC source: 0001423902-22-000043 · wf-form4_166863610532817.xml · nonDerivative · entry 1

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 128,006

SEC source: 0001423902-22-000041 · wf-form4_166863576548171.xml · nonDerivative · entry 2

Bourne Robert W. · CIK 0001627376 · SVP & Chief Commercial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,142

SEC source: 0001423902-22-000041 · wf-form4_166863576548171.xml · nonDerivative · entry 1

Bourne Robert W. · CIK 0001627376 · SVP & Chief Commercial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,383

SEC source: 0001423902-22-000039 · wf-form4_166863555016367.xml · nonDerivative · entry 2

Green Catherine A. · CIK 0001791874 · SVP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,141

SEC source: 0001423902-22-000039 · wf-form4_166863555016367.xml · nonDerivative · entry 1

Green Catherine A. · CIK 0001791874 · SVP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,229

SEC source: 0001127602-22-021722 · form4.xml · derivative · entry 2

Holderman Daniel P. · CIK 0001942513 · SVP Co-Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,637

Underlying: Common units representing limited partner interests · 17,637 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: The Phantom Units vest in three annual installments 20% on February 12, 2023, 40% on February 12, 2024, and 40% on February 12, 2025, and will pay distribution equivalent rights in cash prior to vesting.

F2 · derivative.expiration_date: The Phantom Units vest in three annual installments 20% on February 12, 2023, 40% on February 12, 2024, and 40% on February 12, 2025, and will pay distribution equivalent rights in cash prior to vesting.

SEC source: 0001127602-22-021066 · form4.xml · nonDerivative · entry 2

Dial Christopher B. · CIK 0001729009 · SVP, GC and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,609

SEC source: 0001127602-22-021066 · form4.xml · nonDerivative · entry 1

Dial Christopher B. · CIK 0001729009 · SVP, GC and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,820

SEC source: 0001127602-22-021076 · form4.xml · nonDerivative · entry 2

Green Catherine A. · CIK 0001791874 · VP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,005

SEC source: 0001127602-22-021076 · form4.xml · nonDerivative · entry 1

Green Catherine A. · CIK 0001791874 · VP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,059

SEC source: 0001127602-22-021074 · form4.xml · nonDerivative · entry 2

Bourne Robert W. · CIK 0001627376 · SVP & Chief Commercial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,770

SEC source: 0001127602-22-021074 · form4.xml · nonDerivative · entry 1

Bourne Robert W. · CIK 0001627376 · SVP & Chief Commercial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,010

SEC source: 0001127602-22-021070 · form4.xml · nonDerivative · entry 2

Collins Craig W · CIK 0001698812 · SVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,254

SEC source: 0001127602-22-021070 · form4.xml · nonDerivative · entry 1

Collins Craig W · CIK 0001698812 · SVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,690

SEC source: 0001127602-22-021062 · form4.xml · nonDerivative · entry 3

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 125,405

SEC source: 0001127602-22-021062 · form4.xml · nonDerivative · entry 2

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 126,422

SEC source: 0001127602-22-021062 · form4.xml · nonDerivative · entry 1

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,837

F1 · shares: Units transferred in connection with a donation to a charitable institution.

SEC source: 0001140361-22-026895 · form4.xml · nonDerivative · entry 1

OCCIDENTAL PETROLEUM CORP /DE/ · CIK 0000797468 · 10% owner

OXY USA INC · CIK 0000728399 · 10% owner

OXY Oil Partners, Inc. · CIK 0001785615 · 10% owner

Baseball Merger Sub 2, Inc. · CIK 0001785593 · 10% owner

ANADARKO PETROLEUM CORP · CIK 0000773910 · 10% owner

ANADARKO HOLDING Co · CIK 0001570992 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 190,281,578

F1 · kind: On July 17, 2022, Western Midstream Partners, LP (the "Issuer") entered into a unit purchase agreement with WGR Asset Holding Company LLC ("WGRAH") pursuant to which the Issuer agreed to purchase 10,000,000 common units representing limited partner interests in the Issuer (the "Common Units") from WGRAH at a price of $25.25 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on July 21, 2022.

F1 · price: On July 17, 2022, Western Midstream Partners, LP (the "Issuer") entered into a unit purchase agreement with WGR Asset Holding Company LLC ("WGRAH") pursuant to which the Issuer agreed to purchase 10,000,000 common units representing limited partner interests in the Issuer (the "Common Units") from WGRAH at a price of $25.25 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on July 21, 2022.

F2 · ownership.nature: Following the transaction reported herein, Western Gas Resources, Inc. ("WGR") holds 161,319,520 Common Units, WGRAH holds 14,139,260 Common Units, APC Midstream Holdings, LLC ("APCMH") holds 457,849 Common Units and Anadarko USH1 Corporation ("Anadarko USH1") holds 14,364,949 Common Units. WGR also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer.

F3 · ownership.nature: OXY USA Inc. ("OXY USA") is a wholly owned subsidiary of Occidental Petroleum Corporation ("Occidental"). OXY USA owns 100% of the outstanding common stock of OXY Oil Partners, Inc. ("OOP"). OOP owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. ("BMS").

F4 · ownership.nature: Anadarko Petroleum Corporation ("APC") is a wholly owned subsidiary of BMS. APC owns (i) 100% of Anadarko Holding Company ("AHC") and (ii) indirectly, 100% of the common stock of WGR and Kerr-McGee Corporation ("KMG"). WGR is the sole member of APCMH, and APCMH is the sole member of WGRAH. KMG and AHC together own 100% of the common stock of Kerr-McGee Worldwide Corporation ("KMWW"), and APC and KMWW together indirectly own 100% of the common stock of Anadarko USH1. Accordingly, OXY USA, OOP, BMS, APC, AHC, WGR, Anadarko USH1, KMG, APCMH, WGRAH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental.

SEC source: 0001140361-22-026894 · form4.xml · nonDerivative · entry 1

OCCIDENTAL PETROLEUM CORP /DE/ · CIK 0000797468 · 10% owner

WESTERN GAS RESOURCES INC · CIK 0000856716 · 10% owner

APC Midstream Holdings, LLC · CIK 0001601306 · 10% owner

WGR Asset Holding Co LLC · CIK 0001771584 · 10% owner

Kerr-McGee Worldwide Corp · CIK 0001699285 · Former 10% Owner

Anadarko USH1 Corp · CIK 0001824936 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 190,281,578

F1 · kind: On July 17, 2022, Western Midstream Partners, LP (the "Issuer") entered into a unit purchase agreement with WGR Asset Holding Company LLC ("WGRAH") pursuant to which the Issuer agreed to purchase 10,000,000 common units representing limited partner interests in the Issuer (the "Common Units") from WGRAH at a price of $25.25 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on July 21, 2022.

F1 · price: On July 17, 2022, Western Midstream Partners, LP (the "Issuer") entered into a unit purchase agreement with WGR Asset Holding Company LLC ("WGRAH") pursuant to which the Issuer agreed to purchase 10,000,000 common units representing limited partner interests in the Issuer (the "Common Units") from WGRAH at a price of $25.25 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on July 21, 2022.

F2 · ownership.nature: Following the transaction reported herein, Western Gas Resources, Inc. ("WGR") holds 161,319,520 Common Units, WGRAH holds 14,139,260 Common Units, APC Midstream Holdings, LLC ("APCMH") holds 457,849 Common Units and Anadarko USH1 Corporation ("Anadarko USH1") holds 14,364,949 Common Units. WGR also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer.

F3 · ownership.nature: OXY USA Inc. ("OXY USA") is a wholly owned subsidiary of Occidental Petroleum Corporation ("Occidental"). OXY USA owns 100% of the outstanding common stock of OXY Oil Partners, Inc. ("OOP"). OOP owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. ("BMS").

F4 · ownership.nature: Anadarko Petroleum Corporation ("APC") is a wholly owned subsidiary of BMS. APC owns (i) 100% of Anadarko Holding Company ("AHC") and (ii) indirectly, 100% of the common stock of WGR and Kerr-McGee Corporation ("KMG"). WGR is the sole member of APCMH, and APCMH is the sole member of WGRAH. KMG and AHC together own 100% of the common stock of Kerr-McGee Worldwide Corporation ("KMWW"), and APC and KMWW together indirectly own 100% of the common stock of Anadarko USH1. Accordingly, OXY USA, OOP, BMS, APC, AHC, WGR, Anadarko USH1, KMG, APCMH, WGRAH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental.

SEC source: 0001127602-22-017816 · form4.xml · nonDerivative · entry 1

Bourne Robert W. · CIK 0001627376 · SVP & Chief Commercial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,400

SEC source: 0001127602-22-014780 · form4.xml · nonDerivative · entry 2

Dial Christopher B. · CIK 0001729009 · SVP, GC and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,285

SEC source: 0001127602-22-014780 · form4.xml · nonDerivative · entry 1

Dial Christopher B. · CIK 0001729009 · SVP, GC and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,514

SEC source: 0001127602-22-014784 · form4.xml · nonDerivative · entry 2

Green Catherine A. · CIK 0001791874 · VP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,838

SEC source: 0001127602-22-014784 · form4.xml · nonDerivative · entry 1

Green Catherine A. · CIK 0001791874 · VP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,897

SEC source: 0001127602-22-014782 · form4.xml · nonDerivative · entry 2

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 140,337

SEC source: 0001127602-22-014782 · form4.xml · nonDerivative · entry 1

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 141,443

SEC source: 0001127602-22-014781 · form4.xml · nonDerivative · entry 2

Collins Craig W · CIK 0001698812 · SVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,582

SEC source: 0001127602-22-014781 · form4.xml · nonDerivative · entry 1

Collins Craig W · CIK 0001698812 · SVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,056

SEC source: 0001127602-22-014779 · form4.xml · nonDerivative · entry 2

Bourne Robert W. · CIK 0001627376 · SVP & Chief Commercial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,900

SEC source: 0001127602-22-014779 · form4.xml · nonDerivative · entry 1

Bourne Robert W. · CIK 0001627376 · SVP & Chief Commercial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,161

SEC source: 0001127602-22-013233 · form4.xml · derivative · entry 3

Shults Kristen S. · CIK 0001925496 · SVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,838

Underlying: Common units representing limited partner interests · 10,838 shares

Expires 2025-02-12

F3 · derivative.exercise_price: Each performance-based unit represents the right to receive, following vesting, between 0% and 200% of one WES Common Unit based upon the achievement of pre-established performance metrics over a 3-year performance period.

SEC source: 0001127602-22-013233 · form4.xml · derivative · entry 2

Shults Kristen S. · CIK 0001925496 · SVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,838

Underlying: Common units representing limited partner interests · 10,838 shares

Expires 2025-02-12

F3 · derivative.exercise_price: Each performance-based unit represents the right to receive, following vesting, between 0% and 200% of one WES Common Unit based upon the achievement of pre-established performance metrics over a 3-year performance period.

SEC source: 0001127602-22-013233 · form4.xml · derivative · entry 1

Shults Kristen S. · CIK 0001925496 · SVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,676

Underlying: Common units representing limited partner interests · 21,676 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

F2 · derivative.expiration_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.